john d halfman environmental studies program department of geoscience finger lakes institute
DESCRIPTION
Comparative Limnology of Honeoye, Canandaigua, Keuka, Seneca, Cayuga, Owasco & Skaneateles Lakes 2005 - 2007. John D Halfman Environmental Studies Program Department of Geoscience Finger Lakes Institute 3 rd Annual Finger Lakes Research Conference. - PowerPoint PPT PresentationTRANSCRIPT
Comparative Limnology of Comparative Limnology of Honeoye, Canandaigua, Keuka, Honeoye, Canandaigua, Keuka,
Seneca, Cayuga, Owasco & Seneca, Cayuga, Owasco & Skaneateles LakesSkaneateles Lakes
2005 - 20072005 - 2007
John D HalfmanJohn D HalfmanEnvironmental Studies ProgramEnvironmental Studies Program
Department of GeoscienceDepartment of GeoscienceFinger Lakes InstituteFinger Lakes Institute
33rdrd Annual Finger Lakes Research Conference Annual Finger Lakes Research Conference
Research Focus:Research Focus:Watershed Watershed Lake Interactions Lake InteractionsImpact of Land Use & Bedrock GeologyImpact of Land Use & Bedrock Geology
Limestone vs. Shales & SandstonesSedimentary Rocks
Forested vs. AgriculturalLandscapes
Bedrock Land Use
Sampling SchemeSampling Scheme• Sampling ScheduleSampling Schedule– Since 2005Since 2005– Monthly: May through OctMonthly: May through Oct– At Least Two Deep-Water SitesAt Least Two Deep-Water Sites
• ParametersParameters– CTD Cast (SeaBird SBE-25)CTD Cast (SeaBird SBE-25)
• Cond, Temp, Depth, Turb, Chlro, DO, Cond, Temp, Depth, Turb, Chlro, DO, pHpH
– Secchi Disc DepthSecchi Disc Depth– Surface & Bottom Water AnalysesSurface & Bottom Water Analyses
• Total PhosphatesTotal Phosphates– 2006 & 20072006 & 2007
• Dissolved PhosphatesDissolved Phosphates• Nitrates & SilicaNitrates & Silica• Chlorophyll-aChlorophyll-a• Total Suspended SolidsTotal Suspended Solids• Total Coliform & Total Coliform & E. coliE. coli Bacteria Bacteria
– 2005 only2005 only
• Major Ions (Na, K, Ca, Mg, Cl, SOMajor Ions (Na, K, Ca, Mg, Cl, SO44))
Seneca Lake Since 1994 4 Sites & Streams Owasco Lake 11 Lake Sites & Streams 2006 & 2007Cayuga Lake 9 Lake Sites
CTD ProfilesCTD ProfilesNew CTDNew CTD
Temperature 10-20 m ThermoclineSpecific Conductance Epilimnion DilutionFluorescence Surface Algae
Surface Surface Dilution?Dilution?
Subsurface Subsurface AlgaeAlgae
Nepheloid Nepheloid LayersLayers
Owasco Lake - 2006Owasco Lake - 2006Owasco InletOwasco Inlet ImpactImpact
Dissolved PhosphateAnnual Average Flux
0
1
2
3
4
5
6
7
Dut
chH
ollo
w
Inle
t(M
orav
ia)
Mill
Cr
Inle
t(L
ocke
)
Hem
lock
Inle
t(C
ount
yLi
ne)
Inle
t(G
roto
n)
Pho
spha
te (
SR
P, k
g/da
y, P
)
Site Average
Stream+Trib Sum
Total Phosphate Annual Averages
0
5
10
15
20
A 1
1B B C 2
2B D
CC
1
CC
2 E
CC
3
CC
4
To
tal
Ph
osp
hat
e (u
g/L
, P
)
2005
2006
Lake
Stream
94 125 608
Halfman, Holler & Philip, 2006, A preliminary water quality study of Owasco Lake, NY and its watershed. http://fli.hws.edu/pdf/halfman_owasco.pdf
Emerson FoundationEmerson Foundation
2007 – Owasco Lake & Stream 2007 – Owasco Lake & Stream DataDataSee Poster by Evan BrownSee Poster by Evan Brown
2006
2007
Lake
Stream
Groton
Groton
From: Bruce Natale, CC WQMA Chair
Groton Wastewater Effluent
Other Owasco Watershed Other Owasco Watershed TalksTalks• Susan Cushman, HWSSusan Cushman, HWS
Stream Biotic IntegrityStream Biotic Integrity• Bruce Gilman, FLCCBruce Gilman, FLCC
Macrophyte CommunitiesMacrophyte Communities• Mark Leopold, CornellMark Leopold, Cornell
Amphipods & Zebra MusselsAmphipods & Zebra Mussels• Emily Runnells, HWSEmily Runnells, HWS
Zooplankton & Water QualityZooplankton & Water Quality• Melissa Balk, HWSMelissa Balk, HWS
Invasive ZooplanktonInvasive Zooplankton
Algae (TSS, Secchi)Algae (TSS, Secchi)Algae
Largest Surface Water Honeoye
Smallest Bottom Water Skaneateles
2005 - 2007 Mean Chlorophyll-a
0
1
2
3
4
5
Honeo
ye
Canan
daig
ua
Keuka
Senec
a
Cayug
a
Owasco
Skane
atele
s
Ave
rag
e C
hlo
rop
hyl
l-a
(u
g/L
)
2005 Surface
2006 Surface
2007 Surface
2005 Bottom
2006 Bottom
2007 Bottom
2005 - 2007 Mean Secchi Disk Depth
0123456789
10
Honeo
ye
Canan
daig
ua
Keuka
Senec
a
Cayug
a
Owas
co
Skane
atele
s
Ave
ag
e S
ecc
hi D
ep
th (
m)
2005
2006
2007
PhosphatesPhosphatesSRP & TPSRP & TP
2005 - 2007 Mean Phosphate
0
2
4
6
8
10
12
Honeo
ye
Canan
daig
ua
Keuka
Senec
a
Cayug
a
Owasco
Skane
atele
sAve
rag
e P
ho
sph
ate
(S
RP
, u
g/L
, P
)
2005 Surface
2006 Surface
2007 Surface
2005 Bottom
2006 Bottom
2007 Bottom
2660 - 2007 Mean Total Phosphates
05
101520
25303540
Honeo
ye
Canan
daig
ua
Keuka
Senec
a
Cayug
a
Owasco
Skane
atele
s
Ph
osp
ha
te (
TP
, u
g/L
, P
)
2005 No Data
2006 Surface
2007 Surface
2005 No Data
2006 Bottom
2007 Bottom
NitratesNitrates
2005 - 2007 Mean Nitrate
0
0.5
1
1.5
2
Honeo
ye
Canan
daig
ua
Keuka
Senec
a
Cayug
a
Owasco
Skane
atele
s
Ave
rag
e N
itra
te (
mg
/L,
N)
2005 Surface
2006 Surface
2007 Surface
2005 Bottom
2006 Bottom
2007 Bottom
2005 -2007 Mean Dissolved Silica
0200400600800
10001200140016001800
Honeo
ye
Canan
daig
ua
Keuka
Senec
a
Cayug
a
Owasco
Skane
atele
s
Ave
rag
e S
ilica
(S
RS
i, u
g/L
, S
i)
2005 Surface
2006 Surface
2007 Surface
2005 Bottom
2006 Bottom
2007 Bottom
Water Quality RankingWater Quality Ranking Ranked Each Parameter Ranked Each Parameter Chl, TSS, TP (2006-07), SRP, N, Si, Secchi, Bacteria (only 2005)Chl, TSS, TP (2006-07), SRP, N, Si, Secchi, Bacteria (only 2005)
Calculated a Mean Rank (1-7) Calculated a Mean Rank (1-7)
LakeLake 2005*2005* 20062006 20072007HoneoyeHoneoye 6.16.1 7.07.0 7.07.0
CanandaiguaCanandaigua 1.41.4 3.13.1 1.31.3
KeukaKeuka 3.03.0 3.33.3 1.41.4
SenecaSeneca 7.07.0 3.2 3.2 (no (no bacteria)bacteria)
3.03.0
CayugaCayuga 4.44.4 5.9 5.9 (no (no bacteria)bacteria)
3.63.6
OwascoOwasco 6.76.7 5.65.6 2.82.8
SkaneatelesSkaneateles 1.01.0 1.01.0 1.01.0
*Modified from: Halfman & Bush, 2006, A preliminary water quality study of selected Finger Lakes, NY. http://people.hws.edu/halfman/FL-Lim/2005 FL-Data Halfman_Bush.pdf
Graphically…Graphically…
Water Quality Ranking - 2005
R2 = 0.86
Water Quality
Le
gis
lati
on
Honeoye
Canandaigua
Keuka
Seneca
Cayuga
Owasco
Skaneateles
Water Quality Ranking - 2007
R2 = 0.62
Water Quality
Le
gis
lati
on
Honeoye
Canandaigua
Keuka
Seneca
Cayuga
Owasco
Skaneateles
2007: Less Rain – Less Nutrient Runoff - Impacts Faster Residence Time Lakes
Water TransparencySeneca Lake
0
2
4
6
8
10
12
14
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
Date
Sec
chi D
isk
Dep
th (
m)
Secchi Depth (m) Poly. (Secchi Depth (m))
Lakes do Change!Lakes do Change!
Zebra Zebra IntroduceIntroduce
dd
Zebra Zebra Die OffDie Off
Zebra & Zebra & Quagga Quagga ReboundRebound
Nutrient Nutrient Loading?Loading?
Thanks - Questions? Thanks - Questions? John Halfman, Environmental Studies, Geoscience, FLI, HWSJohn Halfman, Environmental Studies, Geoscience, FLI, HWS Data At:Data At: http://people.hws.edu/halfman/FL-Lim/FL- http://people.hws.edu/halfman/FL-Lim/FL-Limnology.htmLimnology.htm