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    1

    Asociacion

    ANAI:Stream

    Biomo

    nitoringP

    rogram

    DocumentationofuseofriversintheinterioroftheLaAmistadWorld

    HeritageSite(PILA)bydiadromousfishandshrimps;acollaborativeeffortbyindigenousparataxonomistsandtheAsociacionANAI

    StreamBiomonitoringProgram. ReporttoUNESCOandthegovernmentsofCostaRicaandPanama

    ANAI,Inc: 1120MeadowsRd.

    Franklin,NC28734,UnitedStates

    [email protected]

    (828)524-8369

    Asoc.ANAI:Apdo.170-2070

    SabanilladeMontesdeOca,CostaRica

    [email protected]

    (506)2756-8120

    July,2011

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    DocumentationofuseofriversintheinterioroftheLaAmistadWorldHeritageSite(PILA)bydiadromousfishandshrimps;acollaborative

    effortbyindigenousparataxonomistsandtheAsociacionANAIStreamBiomonitoringProgram. ReporttoUNESCOandthe

    governmentsofCostaRicaandPanama

    Dr.WILLIAMO.McLARNEYProgram Director

    LIC.MARIBELMAFLAHERRERAProgram Codirector

    LIC.ANAMARIAARIASMORENOResearch Coordinator

    MARCIOBONILLAParataxonomist

    HUGOSANCHEZParataxonomist

    July,2011ANAI,Inc: 1120MeadowsRd.

    Franklin,NC28734,UnitedStates

    [email protected]

    (828)524-8369

    Asoc.ANAI:Apdo.170-2070

    Sabanillade

    Montes

    de

    Oca,

    Costa

    Rica

    [email protected]

    (506)2756-8120

    Web:www.anaicr.org

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    TABLEOFCONTENTSEXECUTIVESUMMARY 4RESUMENEJECUTIVO 4INTRODUCTION 6PERSONNEL 8PLANNING 9FIELDSTUDYMETHODS 10EXPEDITIONNARRATIVESANDSURVEYRESULTS 13

    RioTeribe

    13

    QuebradaBocachica 17

    RiosYorkinandTscui 17

    RioKatsi 21ADDITIONALSURVEYWORK 22CONCLUSIONS 24ACKNOWLEDGMENTS 26

    ViewoftheupperRioTeribeWatershed

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    DocumentationofuseofriversintheinterioroftheLaAmistadWorldHeritage

    Site(PILA)bydiadromousfishandshrimps;acollaborativeeffortbyindigenous

    parataxonomistsandtheAsociacionANAIStreamBiomonitoringProgram.

    ReporttoUNESCOandthegovernmentsofCostaRicaandPanama

    EXECUTIVESUMMARY

    DuringAprilandMay,2011theANAIStreamBiomonitoringProgramdeployedtwoPanamanian

    Nasoparataxonomists,MarcioBonillaandHugoSanchez,tocarryout4separateexpeditionsinorderto

    inventorydiadromous fishandshrimp in thePanamanianhalfof theAtlanticslopeof theLaAmistad

    International Peace Park and World Heritage Site (PILA). By means of visual survey in streams of the

    Teribe, Bocachica, Yorkin/Tscui and Katsi watersheds, they verified the presence of 6 species of

    diadromousfishandoneshrimpatdistancesofupto15km.upstreamofthePILAboundaryandupto

    750 m. elevation. The data strongly suggest the presence of at least some diadromous species well

    above the maximum penetration of our survey, which for the most part corresponds to the highest

    pointaccessibletoinvestigatorsnotequippedwithhelicopters.Of the7diadromousspecies identified,3 fish (Joturuspichardi,Agonostomusmonticola, and

    Sicydium spp.) , plus the Palaemonid shrimpMacrobrachiumheterochirus, may fairly be described as

    ubiquitous below natural vertical barriers at altitudes of up to at least 720 m. Sicydium and

    Macrobrachium,whichhavetheabilitytoclimbmoistverticalsurfaces,arealsofoundabovebarriers;in

    theRioKatsiwatershedwewereabletoverifytheirpresenceveryclosetotheupperlimitofperennial

    flow,atthehighestelevationssurveyed.

    Surveyworkwascomplementedby informalmeetingsinthegatewaycommunitiestothePILA

    watershedsandby involving localresidentsasfieldassistantsandapprenticeparataxonomists.Bythis

    meansweseektoincreaseawarenessofthreatstotheintegrityofPILAposedbyhydrodamproposals,

    andalsotostrengthensupportforconservationofPILAintheneighboringindigenouscommunities.

    Thework

    reported

    here

    comprises

    the

    first

    ichthyological

    inventory

    undertaken

    anywhere

    in

    the

    10,000 sq. km. World Heritage Site. It complements previous work carried out by ANAI at peripheral

    sites in the watersheds draining into Costa Rica from PILA (with documentation of several additional

    diadromousspecies),andstronglysuggeststhatdiadromousfishandshrimpsarethedominantanimals

    in most streams of the Atlantic slope watersheds of PILA in both countries up to undetermined

    altitudinallimits.

    We recommend that, so long as plans remain for construction of hydroelectric dams on the

    principalriversdrainingPILA,theentireparkshouldbelistedasaWorldHeritageSiteinDanger.

    RESUMENEJECUTIVO

    Durante abril y mayo de 2011 el Programa de Biomonitoreo de Ros de la Asociacin ANAI

    contrat a los parataxnomos Panameos Naso, Marcio Bonilla y Hugo Snchez, para inventariar, en

    cuatroexpediciones,lospecesycamaronesdidromosdelaporcinPanameadelavertienteAtlntica

    del Parque Internacional de la Paz y Sitio de Patrimonio Mundial La Amistad (PILA). Por medi de

    revisiones visuales en ros y quebradas de las cuencas Teribe, Bocachica, Yorkin/Tscui y Katsi,

    confirmaron la presencia de seis especies de peces y un camarn a distancias de hasta 15 km aguas

    arribadellmitedelPILA,yalturasde750msnm.Estosdatossugierenfuertementelapresenciadepor

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    lomenosalgunasespeciesdidromasbastantearribadelpuntodepenetracinmximaenelpresente

    estudio,elcualgeneralmentecorrespondialsitioaccesiblemsaltosinusodeunhelicptero.

    Delassieteespeciesdidromasidentificadas,3peces(Joturuspichardi,AgonostomusmontcolaySicydiumsp.),mselcamarnPalaemonidoMacrobrachiumheterochirus,puedenserdescritascomoubicuas por debajo de barreras verticales naturales, en alturas de hasta por lo menos 720 msnm.

    SicydiumyMacrobrachium,alsercapacesdeascenderporsuperficiesverticaleshmedas,tambinse

    encuentranarribadelasbarreras;enlacuencadelRoKatsiseconfirmosupresenciamuycercaallmite

    delflujoperenne,enlasmayoreselevacionesvisitadas.

    El trabajo de inventario fue complementado por medio de reuniones informales en las

    comunidades cercanasalparqueen las cuencasvisitadasya travsdel involucramientodepersonas

    localescomoayudantesdecampoyparataxnomosaprendices.Deestamaneraseesperaincrementar

    laconcienciaacercade lasamenazasa la integridaddelPILAque representan laspropuestaspara la

    construccinderepresashidroelctricas,alavezquesefortaleceelapoyoparalaconservacindelPILA

    enlascomunidadesindgenasaledaas.

    Eltrabajoaqureportadocomprendeelprimer inventario ictiolgicohechoencualquierparte

    deesteSitiodePatrimonioMundialde10,000km2.Escomplementarioaltrabajopreviorealizadopor

    ANAIensitiosperifricosdelosrosquedrenanelPILAhaciaCostaRica(con documentacindevarias

    especiesdidromas

    adicionales)

    ysugiere

    fuertemente

    que

    los

    peces

    ycamarones

    didromos

    son

    los

    animalesdominantesen lamayorade ros yquebradasde la vertienteAtlnticadelPILAen ambos

    pases,hastalmitesaltitudinalesnodeterminados.

    Recomendamosquemientraspermanezcanvigenteslosplanesparalaconstruccinderepresas

    hidroelctricasen losprincipalesrosquedrenanelPILA,elparqueenterodebeser listadocomoSitio

    dePatrimonioMundialenPeligro.

    TheRioTeribeabovethemouthofRioPjer

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    INTRODUCTION

    ANAIs 2010 report to the UNESCO

    World Heritage Committee (The Threat to

    Biodiversity and Ecosystem Function of

    ProposedHydroelectric

    Dams

    in

    the

    La

    Amistad

    World Heritage Site, Panama and Costa Rica)

    successfullymadethecasethatconstructionof

    hydroelectricdamsontheriversflowingoutof

    theLaAmistadInternationalPeacePark,World

    HeritageSiteandBiosphereReserve(PILA,from

    itsSpanishacronym)wouldseverelyimpactthe

    function of the rivers of the area as altitudinal

    biological corridors, specificallybyblocking the

    migratorymovementsofasuiteofdiadromous

    fishandshrimpspecieswhicharethedominant

    large aquatic animals athigher altitudes in the

    LaAmistad

    area.

    However, the significance of these

    findings for PILA itself has been questioned,

    based on the justifiable criticism that our

    studies of the aquatic fauna of PILA were all

    carriedoutwithinafewhundredmetersofthe

    park boundary, with three exceptions outside

    the actual park boundary. This is due to

    logisticalrestraints:Atnopoint inCostaRica is

    the PILA boundary located less than 2 days

    travelbyfootfromthenearestpointaccessible

    by

    motor

    vehicle

    or

    boat.

    And,

    while

    the

    park

    boundaryinPanamaiswithinafewhourswalk

    of motorized access, we have until this year

    been unable to obtain scientific collection

    permits for work in Panama. There exists no

    otherinventorydataforaquaticanimalsinPILA

    for the same reason that our surveys were

    concentratednear theboundary accesstothe

    interior of PILA is normally extremely time

    consumingandthereforecostly.

    Partly in response to thesedoubts, the

    UNESCO

    World

    Heritage

    Committee

    directed

    the governments of Panama and Costa Rica to

    carry out a Transboundary Strategic

    Environmental Assessment (TSEA) of PILA if

    theywishtoavoidPILAbeingofficially listedas

    aWorldHeritageSiteinDanger.Responseby

    the governments was slow in coming; when

    they ultimately published Terms of Reference

    forthestudytwopointswereclear:

    1. They were structured such that ANAIcould

    not

    hope

    to

    successfully

    compete

    forfundstodothestudy.

    2. The specified time interval (report duein April, 2011) made it difficult for

    anyone using conventional methods to

    complete meaningful surveys within

    PILA, even if funding is adequate.

    Ultimately, the work was not even

    begun until after the presumptive

    deadline.

    At this point, the ANAI Stream

    BiomonitoringProgram

    found

    itself

    in

    aunique

    position to respond to the challenge of

    shedding light on the presence and relative

    abundance ofdiadromousanimals within PILA.

    We are the only organization capable of

    deploying trained indigenous parataxonomists

    fromtheLaAmistadareatoswiftly,accurately

    and at low cost identify and roughly quantify

    diadromous (and nondiadromous) fish and

    shrimp in selected rivers well within PILA. We

    were fortunateto findsupport forthiswork in

    PILA/Panama

    (though

    not

    in

    Costa

    Rica)

    from

    theInternationalCommunityFoundation.

    The present report, summarizing the

    results of 4 separate expeditions into the

    interior of PILA/Panama will presumably serve

    asacomplementtothebinationalTSEAforuse

    by UNESCO, the governments of Panama and

    Costa Rica, and all others concerned for the

    future of the La Amistad World Heritage site

    and surrounding protected areas and

    communities. We believe it will also prove

    valuable

    as

    a

    contribution

    to

    the

    scant

    biologicalknowledgeofPILA,and incontinuing

    a process, fomented by ANAI, of engaging the

    indigenous communities which border PILA in

    theprotectionoftheWorldHeritageSite.

    Onadifferentscale,wetrustthatitwill

    also serve as a reminder to UNESCO and

    international conservation organizations of the

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    7

    importance of rivers as altitudinal biological

    corridors. We hope this will contribute to

    greater attention being paid to diadromy and

    other riverine corridor functions in making

    decisions about dam construction and other

    activities which can disrupt the continuity of

    fluvialsystems.

    In addition to reporting on the results

    of investigations undertaken by

    parataxonomists in 2011, we have organized

    and appended selected information from

    previousandcurrentstudies inthewatersheds

    draining the Atlantic slope of PILA in both

    countries tobuild thecase for thepresenceof

    diadromousfishandshrimpinalargeportionof

    the World Heritage Site and, as a logical

    consequence, their status as part of the

    Outstanding Universal Value of the protected

    area. Our report will also describe efforts to

    build upon and strengthen support for the

    conservation of PILA and preservation of

    diadromousanimals locally,particularlyamong

    theindigenousNgobe,Naso,BribriandCabecar

    populationsborderingPILA.

    Three of thewidespread diadromous species of PILA: A) Camaron rayado or banded shrimp

    (Macrobrachiumheterochirus). B) Lisa,sartenormountainmullet(Agonostomusmonticola).c)Bobo,bocachicaorhogmullet(Joturuspichardi)

    A B

    C

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    8

    PERSONNEL

    To carry out the field work we

    contracted two Panamanian parataxonomists.

    Marcio Bonilla S. and Hugo Sanchez V. are

    members

    of

    the

    Naso

    tribe

    who,

    followingparticipation in a biomonitoring training

    workshophostedbyANAIinTalamancain2004,

    were principals in fish surveys of their native

    Teribewatershed in 2006 and 2007 and in the

    upper Uren watershed in Costa Rica during

    2009 and 2010. Both are skilled in underwater

    inventory of fish and shrimp species of the La

    Amistaddrainagesandhavealso functionedas

    educators, including in training for other

    parataxonomists.

    It was decided that permanent ANAI

    staffwould

    not

    participate

    in

    the

    field

    work

    for

    several reasons: Srs. Bonilla and Sanchez are

    much more efficient in doing instream surveys

    in large, turbulent and sometimes dangerous

    rivers, and can also set a faster pace in the

    rugged crosscountry travel necessary to reach

    sites within PILA. They are also necessarily

    better at gaining confidence in remote

    indigenouscommunities,wherenonindigenous

    visitorsarenormallyatleastsuspectedofbeing

    agents for dam builders, mining interests and

    the

    like;

    this

    was

    particularly

    important

    in

    the

    Teribe and Bocachica watersheds where ANAI

    doesnothavealonghistoryofpresence.

    Ineachofthe4watershedswehired2

    other local individuals to serve as guides,

    bearers and field assistants. While all actual

    counts in the field were carried out by the

    parataxonomist team, these individuals were

    encouragedtoparticipate,asafirststeptoward

    possible parataxonomist training (a process

    initiated in theYorkin/Tscuiwatershedpriorto

    the inception of the present project). Perhaps

    equally importantwastheirrole in interpreting

    the activity in their own communities and

    helping

    relate

    the

    conservation

    of

    PILA,

    aboutwhichmanyindigenouspeoplehaveambivalent

    feelings, to issues of universal concern in their

    communities.

    In the Naso communities of the Teribe

    watershed,whereSrs.BonillaandSanchez live,

    identifyingtheseindividualswasnoproblem.In

    the Yorkin/Tscui and Katsi watersheds, for

    which access to PILA is through Bribri

    communities in Costa Rica, we were able to

    drawonlongtimecontactsestablishedthrough

    the Stream Biomonitoring Program and other

    activities

    of

    ANAI.

    The

    most

    culturally

    and

    politically sensitive situation we encountered

    wasintheNgobecommunitiesatthelowerend

    of the Bocachica watershed. There we were

    abletoworkthroughcontactsmadeduringthe

    controversy over construction of the CHAN75

    damontheRioChanguinola.

    Inaddition,itwasnecessarytocontract

    the services of skilled boatmen to access the

    boundary of PILA in the Teribe watershed and

    the expedition jumpoff points for the

    Yorkin/Tscuiand

    Bocachica

    watersheds,

    via

    the

    Rios Yorkin and Changuinola, respectively.

    ANAI Biomonitoring Program co

    directors Dr. William O. McLarney and Maribel

    MaflaH.wereinvolvedinallphasesofplanning

    and in debriefing of Srs. Bonilla and Sanchez

    aftereachexpedition.StaffmemberAnaMaria

    Arias M. assisted in all phases and had the

    specific responsibility of preparing the maps

    whichappearinthisreport.

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    PLANNING

    Site selection and expedition planning

    was done in collaboration between the

    parataxonomistsandANAIstaff.Sincewewere

    restricted

    to

    work

    in

    PILA/Panama,

    weeliminated the Lari, Coen, Telire and Estrella

    watersheds, which drain important portions of

    PILA and would be affected by hydroelectric

    damsplannedforCostaRica.(Inourproposalto

    ICF we suggested the possibility to separately

    fundparallelsurveys inPILA/CostaRica.While

    thispossibilitywasnotrealized,wedidmanage,

    without additional funding, to carry out our

    ownsurveys inportionsoftheLariandEstrella

    watershedsjustdownstreamofPILA;resultsare

    includedintheAppendix.)

    The

    five

    principal

    rivers

    draining

    the

    AtlanticslopeofLa Amistad/Panama are, from

    east to west, the Changuinola, Teribe, Yorkin,

    Tscui and Katsi. We excluded the mainstem of

    the largestofthese,theRioChanguinola, from

    considerationforseveralreasons:

    WiththeimminentclosureoftheCHAN75dam on the Changuinola, extirpation of

    diadromousspeciesinthegreatmajorityof

    theChanguinolawatershedisassured.

    The best access to the upper Changuinolais

    through

    Panama

    from

    the

    Pacific

    side.

    To

    carry out surveys there would have

    mandated a disproportionate amount of

    travelcosts.

    Wehadhopes(whichwerenotrealized)ofincorporating a parataxonomist trainee

    from a Panamanian conservation

    organization based in Chiriqui province on

    thePacificslopetoindependentlycarryout

    surveysintheupperChanguinola.

    We

    did

    however,

    elect

    to

    surveyQuebrada Bocachica, tributary to the

    Changuinolajustbelow the CHAN75dam site.

    Once CHAN75 is completed, the Q. Bocachica

    watershedwillbetheonlypartofPILA/Panama

    in the Changuinola watershed above the

    confluence of the Rio Teribe which remains

    opentoentrybydiadromes.

    For each of the 4 rivers (except Q.

    Bocachica)thelocationofthesurveyreachwas

    the same: from the downstream boundary of

    PILAup

    to

    the

    point

    where

    foot

    travel

    became

    impossibleorunacceptablydangerousorwhere

    noevidenceofdiadromeswasseen,whichever

    came first. Our original thought was to survey

    goingupstream,presumablynotingthedrop in

    diversity and abundance of some species with

    altitude. Our parataxonomy team, anticipating

    whatturnedouttobethecase,suggestedthat

    they were more likely to reach an impassable

    reach than run out of fish and shrimp, and

    opted to travel upstream by whatever route

    was expedient, then concentrate on survey

    work

    during

    the

    return

    trip.

    As

    it

    turned

    out,

    impassableconditionswerereachedinallofthe

    watershedsexceptRioKatsi,thesmallestofthe

    5 rivers surveyed. The wisdom of this decision

    willbemorereadilyunderstoodonreadingthe

    accountoftheTeribeexpedition.

    ANAIstaffwasresponsibleforproviding

    or arranging transport to thejumpoff points,

    while the tasks of arranging guides and other

    taxonomists and securing provisions was

    shared. The other main task during the weeks

    prior

    to

    initiating

    field

    surveys

    was

    to

    secure

    collectionpermits(Eventhoughnocollection,

    noreventemporarycapture,ofspecimenswas

    contemplated, ANAM requires a permit to

    collect data within PILA). Because the

    Biomonitoring Program had already received a

    permit to do capture and release surveys of

    aquatic animals in Bocas del Toro province

    outside PILA, through our participation in the

    Binational Sixaola Watershed Project, we

    assumed that getting the additional permit

    would

    be

    an

    efficient

    process.

    In

    fact,

    although

    weformallyappliedforthepermitonFebruary

    19, an affirmative response was not received

    until April 13. This forced us to crowd

    expeditions together, with consequent loss of

    flexibility leading to loss of effective field time

    duetorain,turbidityandhighwaterlevels.

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    10

    FIELDSTUDYMETHODS

    In the field methodology was basically

    as described in our proposal. At selected sites

    on each survey river, 2 or more survey sites

    were

    selected.

    At

    a

    minimum

    these

    includedonesitejustabovethePILAboundaryandone

    at the upperend ofsafe, feasibleaccess (or in

    thecaseoftheRioKatsi,whereit becamevery

    small). The lower reaches of tributary streams

    were also occasionally surveyed, as

    opportunitiespresentedthemselves.

    At each site visual survey of fish and

    shrimp was carried out, first by walking the

    banks and observing from vantage points over

    pools,theninthewaterwithuseofsnorkeland

    face mask. Fish (both diadromous and non

    diadromousspecies)

    and

    shrimp

    observed

    were

    identified to species and abundance estimated

    (Abundant = constantly in view in suitable

    habitat, Common = more than 5 individuals

    observed in half an hour of snorkeling, Rare =

    less than 5 individuals observed). Care was

    takentosurveyalltypesofhabitatpresent,and

    searching was continued at least until no new

    specieswereobservedovera15minuteperiod.

    Minimumsearch time was 30 minutes per site

    by two persons. The parataxonomists were

    equipped

    with

    underwater

    flashlights

    which

    permitted searching under rocks, undercut

    banks, etc. while also facilitating species

    identification in pools where some species of

    fish might maintain a considerable distance

    from observers. At survey sites corresponding

    to campsites, the flashlights were also used to

    searchforshrimpatnight.

    While all identification and data

    recording was done by the parataxonomists,

    other assistants often participated with

    preliminary

    or

    supplementary

    surveys.

    This

    consistedprimarilyingoingaheadofthesurvey

    crew to identify concentrations of fish,

    promising survey sites and special habitats.

    Somefieldtimewasalsodevotedtoinstruction

    for those assistants who expressed interest in

    becomingparataxonomists.

    InourexperienceinTalamancawehave

    learnedthatmostspeciesoffishandshrimpare

    easily observable and identifiable, but certain

    exceptions

    must

    be

    noted.

    Among

    these

    aretwo important diadromous forms the

    American eel or anguila de mar (Anguillarostrata)andshrimpofthefamilyAtyidae.Both

    tend tobenocturnal,andspendmuchof their

    time buried in substrate. One other diadrome

    should be mentioned here; Gobiesox nudus(chupapiedracabezonorclingfish)wasreported

    from the Teribe watershed by our

    parataxonomists in 2006, but this small, rare

    and cryptic species was not seen during the

    present survey. Among nondiadromous forms

    the

    only

    fishes

    not

    readily

    visually

    detectable

    andexpectedattheelevationsofPILAaretwo

    speciesofcatfish(Rhamdia)whichinadditional

    to being nocturnal and cryptic, normally occur

    in very small numbers everywhere. GobiesoxandAtyidaewerenot foundduringthesurvey;

    Anguilla and Rhamdia were, but their

    distributionislikelyunderestimated.

    ForeachsiteGPScoordinates,altitude,

    water temperature and time of survey were

    recorded, together with a physical description

    ofthe

    site.

    This

    information

    was

    supplemented

    with ample photodocumentation (photos are

    included).

    Since part of our purpose was to raise

    consciousnessoftheimportanceofdiadromous

    speciesintheriversofLaAmistad,thethreatto

    these species from dam construction, and the

    relationship of PILA as a protected area to the

    wellbeing of downstream Naso, Ngobe and

    Bribri communities, meetings open to all

    interested parties were held in gateway

    communities

    prior

    to

    the

    first

    day

    of

    field

    work

    and at the conclusion. The following

    communitieswerevisited:

    SiekinandSieyik(RioTeribe,Nasoethnia) Bocachica(QuebradaBocachica,Ngobe) Yorkin(RioTscui,Bribri) KatsiandNamuUoki(RioKatsi,Bribri)

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    11

    In the Yorkin/Tscui and Katsi

    watersheds, the downstream limit of PILA

    corresponds to the international boundary, so

    that while all survey work was conducted in

    Panama, selection of field assistants and pre

    and postsurvey meetings were held in Costa

    Ricangatewaycommunities.

    AccesstoPILA.A)Expeditionmembersclearingatrail.B)Liningadugoutthroughrapidsonthe

    RioTeribe

    A

    B

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    12

    Fieldmethodology.A)GeoreferencingwithGPS. B)Recordingdatainfieldnotebooks.C)Visual

    surveyusingfacemasks.D)Nocturnalsurveysusingunderwaterflashlights

    C

    A B

    D

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    13

    EXPEDITIONNARRATIVESANDSURVEYRESULTS

    Results of our 2011 survey work in

    PILA/Panama are summarized in Table 1. The

    followingindividualexpeditionaccountspainta

    fuller

    picture

    of

    the

    role

    of

    diadromy

    in

    therivers of PILA/Panama and the context within

    whichitoccurs.

    RioTeribe(12days):

    The original plan for surveying the Rio

    Teribe, by far the largest of the rivers to be

    visited,contemplated15daysinthefield.Itwas

    decidedtoembarkfromSiekin,theseatofNaso

    government and the uppermost permanent

    settlement in the Teribe watershed and

    proceed by outboard dugout as far as the

    mouthof

    Quebrada

    Shey,

    not

    far

    from

    the

    PILA

    boundary. The team then took a circuitous

    overland route to a point at the mouth of the

    RioPjer,where the RioTeribeemerges from a

    narrow canyon over a considerable waterfall,

    abovewhichpointtherewasreasontosuspect

    that the nonclimbing diadromous species

    (everything except Sicydium and shrimps)

    would be absent and travel would be

    exceedingly difficult. The plan was, after

    surveying at this point, to build a raft and

    descendthe

    Teribe,

    carrying

    out

    visual

    surveys

    onthemainstemandtributariesenroute.

    Theinitialobjectivewasrealizedaftera

    half day boat trip, followed by a 3 day hike,

    during which 2 tributary streams were

    surveyed. However, the downstream trip was

    aborted by torrential rains, which caused the

    riverto risewellbeyond levelssafe for rafting.

    The team was thus forced to invent a new

    overlandroute,andranoutoffoodhalfadays

    hike from their food cache. By this time two

    members

    were

    ill

    with

    fever

    and

    diarrhea.

    Fortunatelytheywereabletomakecellphone

    contact with their boatman and return to

    Siekin. As a consequence the expedition was

    condensed to12days,but itwasonlypossible

    tocarryoutinventorieson3ofthosedays(total

    of5sites).

    The Teribe was the largest river

    surveyed and, as expected, had the most and

    largest diadromous fish, particularly Joturuspichardi.

    Of

    particular

    interest

    was

    the

    highest

    altitude site, on the Rio Pjer, (which would

    never have been reached had the

    parataxonomists not argued strongly for

    starting at the farthest point and working

    downstream).Thedifficultyofaccesstothissite

    maybejudgedbythefactthat,whileincursions

    into PILA, particularly for purposes of fishing,

    huntingandextractionofartifectsarecommon,

    there was no sign of human access in recent

    yearsatorduringtheapproachtothesite.

    TheR.Pjersite,andtheuppermostsite

    on

    the

    Teribe

    mainstem

    were

    judged

    to

    be

    extremelydangerousbytheparataxonomists,

    who concluded that further upstream travel

    was impossible. They were however able to

    safely access some poolareas and were struck

    by theabundanceandcomplete rangeofsizes

    ofAgonostomusmonticolaandJoturuspichardi.Joturusisahighlyprizedfoodfish,andnormally

    sensitive to disturbance. However, in the Rio

    Pjer, alone among all the sites monitored, the

    parataxonomists reported being able to swim

    freelywith

    groups

    of

    this

    species,

    including

    very

    large individuals. Based on lifelong experience

    in the Teribe watershed, they considered this

    sitetobeexceptional.

    The upper site on the R. Teribe

    mainstem,CruceYolu isthesiteofagauging

    station (since destroyed by high water)

    established during the early days of

    hydropower exploration in the

    Changuinola/Teribe watershed. There was no

    sign of recent human visitation. However, the

    lower

    site

    Shubloch

    is

    frequently

    accessed

    for

    the purposes mentioned above. Shubloch was

    the site of a Naso settlement, but was

    abandonedsome80yearsago.

    As would be expected, the diversity of

    fish was greater at Shubloch than upstream,

    with 3 additional diadromous species (Anguillarostrata, Awaous banana and Gobiomorus

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    14

    dormitor) reported, along with 2 non

    diadromousspecies.

    Other sites on the R. Teribe and 2

    tributary streams tentatively scheduled for

    inventory (R. Shey and R. Bley) could not be

    accessed due to high water. Of 2 tributaries

    whichwereaccessed,one (Q.Shur)hadstrong

    populations of 3 diadromous fishes, including

    large individualsofJoturus.Theothertributarysurveyed,Q.Unio, was theonlystream in the

    project where no diadromes were found; the

    only fish specieswas the residentPriapichthysannectens, characteristic of clean, cold forest

    streamsintheregion.

    RioTeribeexpedition.A)TheRioTeribeatCruceYolu.B)ParataxonomistHugoSanchezheaded

    forasurveysite.C)BoboorbocachicafromtheRioTeribe.D)Passingfieldgearacrossariver

    A

    D

    C

    B

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    TABLE1.Resultsofvisualsurveysforpresenceofdiadromousfishandshrimpsat15sitesinPILA/Panama,2011

    Watershed

    Stream

    Site

    Altitude

    (m.)

    Distanceabove

    PILA

    boundary

    (km.)

    Anguilla

    rostrata

    Agonost

    omus

    monticola

    JoturusPichardi

    Awaous

    banana

    Bocachica

    1.Q.BocachicaUpperlimitof

    cultivation200 7.7 A C

    2.Q.Bocachica Cultivatedarea 180 5.9 A C

    Teribe

    3.R.Teribe CruceYolu 360 13.9 A A

    4.R.PjerAbovemouthatR.

    Teribe380 13.8 A A

    5.Q.Shur5km.abovemouth

    arR.Teribe440 13.1 A C

    6.Q.Unio SenderoShublochic 460 10.3

    7.R.Teribe Shubloch 340 8.1 R A A R

    Yorkin 8.R.Yorkin ElSalto 450JustbelowPILA

    boundaryC R

    Tscui

    9.R.Tscui LaJolla 730 8.6

    10.R.Tscui Bateal 510 6.6 A

    11.R.Tscui PuertoConcepcin 310 4.2 A C

    12.Q.Draria EdgarAlanFarm 200 2.8 A R

    Katsi

    13.R.Katsi Falls 680 4.5 R

    14.R.Katsi Above2falls 720 4.8

    15.UnnamedJustabovewhereR.

    Katsidivides750 4.4 R

    16.R.Katsi PILAboundary 290 A R

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    FIGURE1.SiteswithinPILA/PanamasurveyedfordiadromousfishandshrimpbyANAIparataxonomists,2011

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    17

    QuebradaBocachica(4days):

    Although the Rio Teribe is tributary to

    the Rio Changuinola, the 2 watersheds were

    considered separately in this study, in part

    because of the large size of the R. Teribe, but

    also because thejuncture of the two rivers is

    below the PILA boundary. With the pending

    closure of the CHAN75 dam, the only portion

    oftheupperChanguinolawatershedwhichwill

    be accessible to diadromes will be the Q.

    Bocachica, whichjoins the riverjust below the

    dam site. Its watershed area of 103 sq. km.

    represents just 7.1% of the watershed area

    formerlyaccessible.

    Q. Bocachica is also of concern due to

    its position as a natural escape valve for

    Ngobe communities being displaced by the

    CHAN75

    project.

    Part

    of

    the

    Q.

    Bocachica

    watershedwithinthepark isalreadypopulated

    andalsousedforagriculturalpurposesbynon

    residents.

    Both sites surveyed on Q. Bocachica

    had a similar mix of fish, with abundant

    Agonostomus and Sicydium and a surprising

    number ofJoturus of all sizes. Of the streams

    surveyed,Q.Bocachicahasthe lowestgradient

    and (despite its name) would not seem o

    present high quality habitat for adultJoturus.

    Based

    on

    observations

    of

    fish

    and

    habitat

    as

    well as conversations with local residents, we

    surmise that a significant number of the

    diadromes observed in Q. Bocachica represent

    animals diverted by activities at the CHAN75

    dam just upstream, which is already partially

    closed. If this is the case, then in future years

    wecanexpectnumbersofdiadromousspecies

    to decline to a level reflecting the carrying

    capacity of the stream (or less, if fishing

    pressure increases with a denser human

    population). Results of this survey should be

    interpreted

    as

    overstating

    the

    value

    of

    this

    streamashabitatfordiadromesinPILA.

    RiosYorkinandTscui(6days):

    The Rio Tscui, the largest tributary of

    the binational Rio Yorkin watershed, arises

    within PILA/Panama and ultimatelyjoins with

    theYorkininCostaRicaatthevillageofYorkin,

    whichhasbeena focalpointofactivity forthe

    ANAI Stream Biomonitoring Team since the

    inceptionofourprogram.Ouroriginalplanwas

    to hike up the Tscui to the international/PILA

    boundaryandworkupstreamto themaximum

    feasible access point, then cross the flanks of

    Cerro Xkokariu at altitudes of about 1,000 m.,

    come down into the headwaters of the Rio

    Yorkin, survey it down to the Park Boundary,

    then continue down the river to base camp at

    Yorkin.

    This plan was changed due to the

    necessity to employ different local guides for

    the Tscui and the Yorkin; both rivers were

    accessedbytravelingupstreamfromYorkin.As

    it turns out, it might have been better to

    continuewiththeoriginalplan,sincethegroup

    wasunable

    to

    penetrate

    PILA

    along

    the

    Yorkin.

    Landslides which have occurred since the last

    time anyone from Yorkin has gone to a place

    knownasElSaltowouldrequirealongascent

    over scree interspersed with boulders.

    (However, it should be noted that the Ngobe

    village of Alto Yorkin appears to be located

    withinPILA,thoughnotdirectlyontheriver.)

    Apartfromsafetyconcerns,thepresent

    conditionoftherivermayposeabarriertofish

    passage. One site was inventoried, at the foot

    of

    the

    impacted

    area,

    barely

    below

    the

    PILA

    boundary.Thebraidedstreamchanneldoesnot

    offer good habitat forJoturus, although some

    small individuals were seen just below the

    braidedreach.Theother3commondiadromes

    (Agonostomus, Sicydium and Macrobrachiumheterochirus)werepresent.

    The Rio Tscui has also suffered from

    naturalevents inrecentyears, includingaflash

    flood which originated near the

    international/PILAboundaryinDecember,2008

    and utterly altered the channel between there

    andthe

    mouth,

    with

    temporary

    displacement

    of

    almost all fish. A more recent landslide

    originatingonatributary(Q.Bateal)apparently

    blocks passage by large fish at a point 6.6 km.

    abovethePILAboundary.

    The Tscui was inventoried at 3 points.

    Notethatbeginningattheinternationalborder,

    atanelevationofabout120m.,theTscuiitself

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    18

    forms the PILA boundary for about 4 km. For

    purposesofthisstudythedownstreamborder

    of PILA was taken to be the international

    boundary,abovewhichpoint the rivermaybe

    considered to be within PILA. The only Tscui

    tributarysurveyed,QuebradaDraria,entersthe

    TscuifromthePILAside.The lowermostsurvey

    point on the Tscui, Puerto Concepcion is

    located where the World Heritage Site

    boundarycrossestheriver.

    ComparisonofresultsfromtheR.Tscui

    atPuertoConception,withanaltitudeofabout

    310m.andthenextstation,Batealat510m.,

    showstheexpectedgradientofdiversitywith4

    diadromous and 2 nondiadromous species

    observed at Puerto Concepcion, but only 3

    diadromesandnootherspeciesat Bateal.

    TheBateal

    site

    was

    located

    just

    below

    the tributary and barrier referred to above.

    Above thebarrier, at an altitudeof about730

    m. (La Jolla), the only large aquatic animals

    detected were Sicydium and Macrobrachiumheterochirus, both of which are capable ofclimbinghigh,nearverticalbarriers if they are

    moist. According to our guides, prior to the

    landslide,thereachbetweenBatealandLaJolla

    was characterized by abundance of

    Agonostomusmonticola.

    Q. Draria, at an altitude of about 210

    m., lackedJoturus,but theother3widespread

    diadromes were present, as well as Awaousbanana,alsorecordedfromthe lowermostsite

    ontheR.Teribe.

    Overaperiodofyearswehavecometo

    consider the Rio Tscui between the

    international/PILA boundary and Yorkin as an

    outstanding site for diadromes, especially

    including large Joturus. This changed in 2009

    following the December, 2008 disaster, but

    there is a definite trend toward repopulation,

    particularlybythestrongswimmingJoturusand

    Agonostomus. This trend is likely occurring

    within PILA as well; were this work to be

    repeatedwewouldexpectgradual increases in

    abundance and size of diadromes between

    PuertoConcepcion

    and

    Bateal,

    with

    possible

    eventual repopulationupstreamof theslideat

    Bateal.

    It should be noted that the small

    portionof theTscuiwatershedwithinPanama

    but outside PILA, paralleling the river is the

    focus of a smallwave of colonization by non

    indigenous Panamanians; some encroachment

    withintheparkmayalreadybeoccurring.

    RioYorkinbelowthePILAboundary

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    19

    Yorkinexpedition.A)TheRioYorkinatthePILAboundary.B)ApprenticeparataxonomistLuis

    SeguraofYorkinpracticingvisualsurveymethods.C)TheYorkinexpeditioncrew

    B

    A

    C

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    20

    RioKatsi(3days):RiosYorkinandTscui(6days):

    Tscuiexpedition.A)Macrobrachiumheterochirus fromQuebradaDraria.B)SigndesignatingthePILAboundaryontheRioTscui.C)WaterfallontheRioTscui.D)MarcioBonilladescendingtoa

    studysiteontheRioTscui.E)TypicalreachoftheupperRioTscui

    DC

    BA

    E

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    21

    RioKatsi(4days):TheRioKatsihasmoreofastairstep

    profile than the other rivers visited, with

    frequentpoolsseparatedby lowcascadesover

    boulders.These conditionspermit thepassage

    of all species of diadromes, but the lack of

    powerful rapids may be a limiting factor for

    Joturus,whichwasnot foundaboveabout300

    m.Above thatpoint, all theotherwidespread

    diadromes were present, although

    Agonostomuswas represented almost entirely

    bylargeindividuals.

    In 2007 we took 3 species of non

    diadromous fish (plus the diadrome Awaous

    banana) at a site not far below the PILA

    boundary,atabout200m.elevation.However,

    A. banana was not recorded within PILA andonly one of the nondiadromous species

    (Priapichthysannectens)wasfound.TheR.Katsiwatershedwassurveyedup

    to a point, 4.8 km. above the PILA boundary,

    where it divides into two branches, at an

    elevation of 750 m. Above this point (within

    about a kilometer of the head of permanent

    flow)thetwobranchesweredeemedtobetoo

    smalltojustifycontinuedsurvey.

    WaterfallsintheheadwaterareaoftheRioKatsi

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    22

    ADDITIONALSURVEYWORK

    Whilewewerenotsuccessful inraising

    funds to support parallel work in PILA/Costa

    Rica (Uren, Lari, Coen, Telire and Estrella

    watersheds),

    we

    did

    plan

    our

    regularmonitoringworkduringthe2011dryseasonso

    as to include visual surveys of sites not far

    below the PILA boundary on the Rio Lari

    (Talamanca Bribri Indigenous Reserve) and Rio

    Cariei (tributary totheRioEstrella in theTayni

    Cabecar Indigenous Reserve). These results

    appear in Table 2, which lists diadromous

    speciesfoundattheuppermostsitemonitored

    inrecentyearsonvariousstreamsdrainingPILA

    in the Changuinola, Teribe, Yorkin, Uren, Lari

    and Estrella watersheds. We include 2 sites

    whichdo

    not

    form

    part

    of

    PILA:

    TheRioCereresite isfromtheHitoyCerereBiologicalReserve,intheEstrellawatershed.

    While HitoyCerere is administratively

    separatefromPILA,itisadjacentandenjoys

    evenstricterlegalprotection.

    AsiteontheRioDueri,whichdoesnotpassthrough PILA, is included as our highest

    altitude site in the Rio Coen watershed,

    whichdoes

    drain

    PILA.

    Of 16 Costa Rican sites listed, 4 are

    within PILA (or HitoyCerere) and 4 are

    immediately below the boundary, while the

    others (except for Rio Dueri) are located as

    specified distances below the boundary.

    Inferencesbasedonthisadditional information

    willbedrawnintheConclusionssection.

    TheConclusionssectionwillalsodiscuss

    resultsofvisualandnetcapturesurveyscarried

    out during 2005 and 2006 by Ngobe and Naso

    parataxonomists

    (including

    Srs.

    Bonilla

    and

    Sanchez) at or near the PILA boundary on 17

    tributaries draining out of the World Heritage

    Site to the Rios Changuinola and Teribe, at

    altitudesof120to400m.

    TABLE2.BiomonitoringsitesnearestthePILAboundaryon15streamsintheAtlanticslopewatersheds

    ofPILA/CostaRica,withdiadromousfishspeciesrecorded

    Watershed

    Stream

    Altitude

    (m.)

    Distance

    belowPILA

    boundary

    (km.)Anguilla

    rostrata

    Pomada

    sys

    crocro

    Agonost

    omus

    montico

    la

    Joturus

    Pichardi

    Awaous

    banana

    Sicydium

    spp.

    Gobiomorus

    dormitor

    Nofnon

    diadromous

    fishspecies

    Yorkin

    1.R.Yorkin 80 14.0 X X X X X X 6

    2.R.Tscui 140 PILAboundary X X X X X 5

    3.Q.Plas 140 PILAboundary X X X 8

    4.R.Bris 240 PILAboundary X X 3

    5.Q.Ambris 300 0.8 X X 5

    Uren

    6.R.Katsi 260 PILAboundary X X X X 3

    7.R.Uren 320 6.2 X X X 0

    8.R.Sukut 320 4.7 X X X 1

    9.Q.Crori 500 9.6 X 1

    10.R.

    Uren

    (LaIsla

    7.5

    km.

    aboveTsoki)200

    Within

    X

    X

    X

    2

    11.R.Uren(LaIslainTsoki) 100 Within X X X X X X 6

    12.Q.Niabri(LaIslainTsoki) 120 Within X X X X X 13

    Lari 13.R.Lari 260 8.2 X X X X X 6

    Coen 14.R.Dueri 160 *** X X X X X X 9

    Estrella15.R.Cariei 280 4.8 X X X X X 6

    16.R.Cerere 140 *** X X X X X X 12

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    FIGURE1.SitesnearestPILAboundarysurveyedfordiadromousfishbyANAI,20062011.Numberscorrespondt

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    24

    CONCLUSIONS

    While the focus of the work reported

    here, and the discussion which follows, is on

    practical biodiversity conservation issues and

    their

    relation

    to

    the

    indigenous

    communitiesborderingPILA,wewouldberemissnottopoint

    out the value of this work from a purely

    scientificpointofview.Otherthanworkcarried

    outorsupportedbyANAIatafewsitesonthe

    periphery of PILA in the upper Changuinola,

    Teribe, Yorkin and Uren watersheds, the data

    reported here constitute the first survey of

    ichthyofaunaeverpublished foranyportion of

    PILA. In this sense they are highly

    complementary to inventory work on other

    faunaandfloraofPILArecentlycompletedand

    currently

    ongoing

    by

    other

    national

    and

    internationalagencies.

    Looking first at the field work carried

    out during 2011 with support from the

    International Community Foundation, Table 1

    showstheimportanceofdiadromyinthefluvial

    ecosystems of La Amistad. A total of 7 species

    ofdiadromousfishandshrimpwerefoundat15

    of 16 sites surveyed in the 4 watersheds, at

    altitudes of 180 to 750 m. Of these 4 were

    widespread, being found at 1015sites. Only 4

    nondiadromous

    fish

    species

    were

    reported,

    at

    7ofthe16sites.

    In all but one case (Quebrada Unio,

    tributary to the Rio Teribe) diadromes (1 to 4

    species) were much more abundant than the

    nondiadromous species. The only species

    observed in Q. Unio was the sedentary

    Priapichthys annectens, often found in foreststreams devoid of other fish. The most

    widespreaddiadromewasSicydium,foundatall15 diadrome sites, and often in enormous

    abundance.

    Aswouldbepredicted,speciesdiversity

    ofbothdiadromesandnondiadromesdeclined

    with altitude, but there is no suggestion of an

    absolute upper altitudinal limit, especially for

    the Sicydium gobies and Macrobrachium

    shrimp, which are capable of climbing

    waterfalls, as demonstrated by their presence

    intheRioTscuiabovewhatwouldappeartobe

    an absolute barrier to species which rely on

    swimming. In Costa Rica and elsewhere

    Sicydium

    have

    been

    reported

    at

    altitudes

    ofnearly1,200m,andtheotherthreewidespread

    diadromesareallknownfromaltitudesgreater

    than500m.

    The Rio Katsi data provide an example

    of the potential to occupy habitat. Because of

    itsrelativelysmallsize,itwaspossibletofollow

    the Katsi up to a point near the actual

    headwaters.Fromthehighestpointsampledon

    theR.Katsimainstem,atanaltitudeof720m.

    theRioKatsiextendsasabluelinedstreamon

    the Sukut topo quad for barely a kilometer; at

    thispoint

    its

    watershed

    area

    is

    approximately

    3

    sq. km. Yet at this point it still contained

    Sicydium. Sicydium, Macrobrachiumheterochirus and few but large Agonostomus

    werefoundevenhigher,atanelevationof750

    m.inasmalltributary.

    What is true for the Teribe, Bocachica,

    Yorkin/Tscui and Katsi watersheds is almost

    certainly true for the other Atlantic slope

    watersheds draining PILA. While due to a

    combination of difficult and costly access and

    failureto

    acquire

    permits

    in

    Panama,

    the

    ANAI

    Biomonitoring Monitoring Programs efforts

    withinPILAhavebeenfewand locatedcloseto

    theboundary,wehavesampled inproximityto

    the park boundary in all of the Costa Rican

    Atlantic slope PILA watersheds except the Rios

    CoenandTelire. (Andwehave found6species

    ofdiadromousfishintheRioDueri,tributaryto

    theCoen,butwhichdoesnotariseinPILA,atan

    altitude of 160 m.) Results of this work are

    showninTable2,spanning5sitesintheYorkin

    watershed,

    7

    in

    the

    Uren,

    2

    in

    the

    Estrella,

    and

    oneeachintheLariandCoenwatersheds.

    Using electrofishing technology and

    visualobservation,wehaveidentified7species

    of diadromous fish within PILA all of those

    observed during the present study, plus the

    roncador or burro grunt (Pomadasys crocro).(Untilrecentlyourmethodologydidnotpermit

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    25

    us to quantify shrimp species, but both of the

    familiesofdiadromousshrimpsknownfromthe

    Talamanca region Palaemonidae and Atyidae

    occurfrequentlyinoursamples.)Thenumber

    ofdiadromousfishspeciespersitevariedfrom

    1 (Sicydium was always present.) to 6, with a

    meanandmedianof4.Aswouldbeexpectedat

    these lower altitude (mostly 100300m.) sites,

    there was greater diversity of nondiadromous

    fish. Only one site, on an extremely high

    gradient reach of the upper Rio Uren, had no

    nondiadromous fish; others had from 1 to 13

    species(mean4.7).However,diadromesnearly

    always accounted for more than half of

    individualfish.

    Visual surveys of Changuinola and

    Teribe tributaries within PILA during 2005 and

    2006

    yielded

    the

    same

    7

    diadromous

    fish

    speciesreportedforTalamanca,alongwiththe

    chupapiedra cabezon or clingfish (Gobiesoxnudus) in the Rio Teribe mainstem. (We have

    anecdotal reports of this species from the Rio

    Uren in Costa Rica, and suspect it is more

    widespreadthangenerallyrealized.)The3most

    widespread diadromous fish (Sicydium,Agonostomus andJoturus) appeared at all 17sites. Both families of diadromous shrimp

    (Palaemonidae, which includesMacrobrachiumheterochirus

    and

    Atyidae,

    surprisingly

    absent

    fromthisyearsvisualsurveys)werepresentat

    15ofthe17sites.

    Webelievethatthecombinationofthis

    years data from PILA/Panama, plus the earlier

    studiesjustcited, laytorestthequestionofthe

    significance of the diadromous presence

    withinPILA,aspreviouslyestablishedbysurvey

    ofperipheralsites.Wehavedemonstratedthat

    several species of diadromous fish and shrimp

    penetrateatleastupto15km.withinPILA(and

    probably further) at altitudes of up to at least

    750 m.,includinginverysmallstreamssuchas

    the upper Rio Katsi. It would be unreasonable

    toassumethatwhatwehavedemonstratedfor

    portionsof4watershedsdoesnotalsoapplyto

    therestofthesewatersheds,aswellastheLari,

    Coen, Telire and Estrella (and until very

    recently, the upper Changuinola). Some of the

    streams sampled (Rios Lari, Uren, Sukut, Dueri

    andCerere)arequite large,providingaccessto

    manykm.ofstreamaboveoursurveysites.

    With completion of the CHAN75 dam,

    diadromes stand to be extirpated from the

    entireupperwatershedoftheRioChanguinola.

    A

    small

    portion

    of

    the

    Rio

    Bon

    watershed,

    tributary to the Rio Teribe, will be affected in

    the same way. And if as few as 2 proposed

    damsarebuiltontheCostaRicanAtlanticslope

    oftheLaAmistadarea,similarextirpationswill

    occurintheUren,Lari,Coen,TelireandEstrella

    watershedsofPILA,leavingonlytheYorkinand

    Teribe watersheds with a full complement of

    aquaticfauna.

    This does not seem to us compatible

    with the stated purpose of conserving

    biodiversity

    through

    designation

    of

    La

    Amistad

    as two National Parks and a World Heritage

    Site. This in turn leads us to recommend the

    designation of La Amistad as a World Heritage

    Site inDanger, ifcorrectivestepsarenottaken

    immediately to protect this aspect of the

    OutstandingUniversalValueofLaAmistad.

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    ACKNOWLEDGMENTS

    TheworkinPILA/Panamareportedhere

    and the preparation of this report were made

    possible by a grant from the International

    Community

    Foundation.

    Thanks

    to

    ICF

    andespecially to Anne McEnany, who championed

    ourcause fromthebeginningandcontinuesto

    raisetheissueofhowtobestapplytheresults.

    We have supplemented the ICF

    supported work in this report with relevant

    results from previous and current

    biomonitoring investigations intheCostaRican

    PILA watersheds. Among numerous supporters

    ofthiswork,weespeciallywishtoacknowledge

    the DorothyAnn Foundation and Randy Curtis

    oftheNatureConservancy.

    Investigations

    in

    the

    Uren

    watershed,

    includingtheportionofPILAknownasLaIsla,

    were supported by a grant from the U.S. Fish

    and Wildlife Service, Division of International

    Conservation;specialthankstoSarah Gannon

    Nagle andEthanTaylor.

    ThefocusontherelationbetweenPILA

    and the neighboring indigenous communities

    which informs this work was originally

    stimulated by Felipe Carazo of The Nature

    Conservancy.

    Over

    a

    period

    of

    several

    years,

    Earl

    Junier of MINAET (the Costa Rican natural

    resources agency) and various leaders of

    ADITIBRI (the Bribri tribal government) have

    facilitated the scientific collection permits

    necessary for us to conduct PILArelated and

    other investigations inthewatersofCostaRica

    andtheTalamancaBribriIndigenousReserve.In

    2011AlfonsoSanabriaandMariettaFonsecaof

    theBinationalSixaolaWatershedProjectplayed

    catalytic roles in assisting us to obtain similar

    permits

    from

    ANAM

    (the

    PanamanianEnvironmentalAuthority) forwork inBocasdel

    ToroProvinceandPILA/Panama.

    SpecialthankstotheYorkinCommunity

    Biomonitoring Group, representing the

    communities of Yorkin (Costa Rica), El Guabo

    andDacle(Panama)fortheircollaborationwith

    the ANAI parataxonomy in their work in the

    Yorkin/Tscuiwatershed.

    Theworkofourparataxonomistswould

    not have been possible without the

    participationofNgobe,NasoandBribriguides,

    boatmen

    and

    parataxonomist

    apprentices.

    Following is a list of assistants by watershed,

    withtheheadguidelistedfirstineachcase:

    Rio Teribe: Antonio Sanchez, EnriqueGamarra,LuisGamarra.

    Quebrada Bocachica: Azael Quintero,TomasJimenez,TeodoroQuintero.

    Rios Yorkin and Tscui: ConcepcionMorales, Allan Vega, Luis Segura, Cirilo

    Cerrut,DailerMorales.

    Rio Katsi: Justo Layan, Diego Torres,Eduardo

    Cordero,

    Jose

    Luis

    Yaslin.

    Finallyweneedtothankourcolleagues

    inthecentralofficeofANAIinSanJose,without

    whosedailyeffortsprojects likethisonewould

    notbemanageable.

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