PATTERNS OF ALGAL SUCCESSION IN A PERTURBATED MARINE INTERTIDAL COMMUNITY

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<ul><li><p>/ Phyol. H, 506-512 (1978)</p><p>P A ' n ERNS OF .AI.G.AI, SUCCESSION IN A PERIURBA l EMARINE IN IER I IDAL C O M M U N I I V</p><p>Stei'en ,V. .\Drpanmrnl )f HioloKual Sticmc. C^ilifiirnu Stale University.</p><p>Fullerton. Caliloniia </p></li><li><p>AI.C..\L SICCESSION 507</p><p>"lent dtie to the variable discharge of nutrietit richbut spontdiialU toxic eiihtetit.</p><p>Briellv. the Wilsoti Cove eflluetit consists ptitnar-ily of ttntreate(M0.')1'K S</p><p>|ctin;iiicnt l.' m'111 irt.iii((lr ttrrc rt.il&gt;lihril</p><p>a a (Hi1974 on</p><p>, &gt;i , |.|," riiilwdiird into the *iilti,)ir .mil the foiitenls pholo-</p><p>'' ' * " ' ' * ' " ' l " "" ' " ' * ' " "' ''" |&gt;ilHoi,t, inaniiallv rriiioveHI h l ' | iHi , t, inaniiallv r r i i i e l. 'nc iiM k \iitt.i(r ihoioiighU Mia|N-(l with wire hrushe* anerimeiiial. 8 tontroi) were ana-U/ealeeriineiual.i.*t iiintioll in ihe undisiurlied halMtal during ihe siud&gt; Data arepiesented as |&gt;erieiit cover and calculatetl lor e.uh s|)eiK-s as amean ot ihe toiii n-pluaied s.imp| uken cluiing each moi r-ing |&gt;eii</p></li><li><p>508 N, Ml RRAY AM) .MARK M. 1,1 I I 1 KR</p><p>-f, 2, Ihvrrsily of ihr firrturholrtt arm tmsrit upon rm-rr(%): imlursjilt (imtritt ifxuutrats art uvnaf^n jor It.l) amt t.O mo a.v\nsmfnt.s.</p><p>K&gt; 14MONTHS</p><p>Fici, 2, Simitario (9t) brlwrrn c-xfx-rimrntal and control |frir prrturbaicil (pollutrd) ( - ) and un|)n loinpariMin* lic-twrrn Drtrrnhrr 1974 and April 1975 (n - 4); those (or unjxil-luicl area tontrot* arc from progriruivr (:om(NiriM&gt;n for Decem-ber 1974 ihrouKhJune l7H(n - 0),</p><p>RFSl'LTSIII iM&gt;th ihc pcrtiirbaicci (polluted) aiul tinpolkit-</p><p>e</p></li><li><p>AI,t;Al. SI CCESSION 509</p><p>T A B U 3. I'allrrtu of ilnttopmrnt of nlgar foloniung rUarnl pints in unpoUutnl area: values rrprnml mran tovrr (%l far 4 rrtliraU^uailralt imliaird tn Dfffmhrr 1974.</p><p>liHitKt altrr clrrancrOR IS</p><p>31.5 37.816.3 nu-l.) Bom \- I hur.</p><p>I riiliiiimnum (Fail ) I&gt;c I iini andC itmrola S. Sc C.y c i &gt; r a i u l u i ( C i i r</p><p>'iirnlliiia offiiimi/is var, ihiUn.w (i&gt;r,) Kutt.Ilhoihrix a\firfgillum Gray</p><p>h pp.</p><p>um njftnf ( l larv . ) KU,riiMs ^(lut(l</p><p>nitiilliiiiira (\Ulalg.iI .over 51.2 90,6 103,5 93.7 115,8 115,1 2O8.4 192.4 169.2 137.0 254.</p><p>a)vcr ol (lit- ci i is ioso Raljsia sp. ul i ich txr-HJ.O';; (il ilu- primary Mil)Mnitf VI m o al icrij,)ii. l{,ilf\iti sp, . as ic|&gt;).Suhsc(|iiciit to the firsl tnonlh. (Viw ralifoniira</p><p>P'vi(|,.,| ;,| |t.;,sj 1,0% cover and reatheolliite(l area were col-juvenile Njxiiiiplutes ol hiprf^a mnnirsii( lut ing the tliird month (NIaitli) and</p><p>m e w into lar^e e longate tlialli which by themonth provided ati extetisive overstorv rati-</p><p>lOU.O'O, Cover of /.\ mnivrsii was r e d i u e d hvf l h h monil) (l)eemlK-r) to '&gt;,</p></li><li><p>510 STEVEN N. MURRAY AND MARK M. I.I IPLER</p><p>TABU. 4. Mean algal caver (%) far rmtrol f&gt;tob of unpnttulrd atra.{%)</p><p>H.V. 5. DifrtMty nf uiipi&gt;ttulfit arrti Invent upon cm&gt;er ('/():Jar Ihr rontrot quattrals art avrragry Jot (1.0 Ihruugh 30.0 momenu.</p><p>Cigarlina tanaluulalACiirattina njfinnatu \ar. rhitrtuu</p><p>(rVt ) Kul7.Plrrmtailta (upittarra ((&gt;rnrl.) Born. &amp; I hur.SaTga.v\um agariUitanum J. Ag.Halulry\ itioua (iarcln.Egrrgui mrnitfui ( rurn.) AfCMh.(.nratlina t&gt;antnuvmfn\t% Yrnur.) Jnharu.Phfttmfkulix Inrrev VV'als.Ptrruwphimm lUnilrutdra (Mom.) Kalk.(/ latifiirnuii VVillrAniuMtotifltii piuififa K\l.</p><p>otbi/fniann titnp. duhoUtma| hCeramium |&gt;pCtadiiphnra pp.Cmhum fragUf (Sur.) Har.CyUmlrinaTpu.i rugittut Okam.Dtttyata ftahfttala (CU&gt;II.) .S. &amp; (;.F.uenia artxirnt .ArcvhGtutTMtitnium fnutlm (Marv.) Kyi.Jania Imrtla (Kuu) Grun.Laurrnim sinuota %. Ik (&gt;.Laurmrm ipfilnMi\ Pcnl tc Riipr.Stfnhutgta ati&gt;irrummna (J, Ag ) Kyi.Pr&gt;tM&gt;nnrUaerased 08.4'^ during the stutly inditating that evenafter 30.0 mo. the Merih/eerimi-iital erimental quadrats withthose of the coiitroU afier 1 yr. it fx'canie appareniihat greater </p></li><li><p>,\l.(.Al. SI C.CE.SSION 511</p><p>org;uii,sins to appear on ihc inovcahlo nxks em-ployed ill a preliininarv expeiimeiii (I.iiiler andMurray 1973) lor the ideniiial out lall and undis-turbed areas, abundant growths did not tKiiir onihc unpolluted suuessional surfaces until 15 mo al-ter tlearatue. This was nol cx|X"tted iti view of theprelitninarv ex|H-riment atid otu extensive field oh-H-rvatitJtis ol tuiturallv disturln-d suhstrata oti theunpolluted shotelitie wheie alnuidatit p.ttches of U.catijdniicii rte(|uentlv tould IH" lound. We hypotli-csi/e th.it the iailute ol (/. californico to ptovideRreater lover (hiring the litsi lew inotiths ol theoxpfiiineiit, tnay liave Ix-eti due iti part to its exilu-sioti hy the ihitk. extensive growths of Scytusiphoiilonirnliniti, /'rfalonid /.\rw and C.nlpomrriitt .siiiuo.'ia.t-Vt'rt spp.. alonK with ilie doseU telated F.utnomor-P'Ki spp.. liave connnonly been reportetl lo beatuoiig the lirsi colotii/eis of cleared nnkv inlerlidalsurfaces (f,g,, tiokc-nbain and Stipbcnsoii I'.&gt;."i8.Norilurall \\)\H. Kahe\ 1'.).'):^ . F.tncisoti and /edler1978). Our lesuhs loi blucj^rc-fii algac. KctcK'arpa-leac and colonial diaiottis .stip|M)tt the hvpothesisInat the piedoininant algal constituents ofthe upiu-rshoreline in the sewage-impacted area are earl\SUccession.il orgatiisins also encountered on rec entl\sturlK'd substrata in neaibv un|&gt;olluted WilsonCove and other Southern (iaiifot nia intertidal com-"uiniiic-s (Wilson I'.)'J."&gt;, Kinerson and Zedlc-r l'.7.SVnirther, the previously di.scussed litetature as wells )ur own lield observations on utistable sectionsf)' the titipolluted Wilson ('ove shoieline and pte-I'niinarv exjHMiments for the same hal)itat (LittlerSlid Murrav H(7.')) makes tetiable a similar positionor U. coli/ornica. ilespite the failure of the presentPXjHMiment to fullv sup|X)rt this viewpoitii.</p><p>I he outfall stu(l\ |)lots showed rapi7-1). dia-totns (C.olubic 1I7(), Uorowii/ka 1972). lilamentousEcicxarp.iceae (Munda I'.)7I). and l'h-</p></li><li><p>512 STEVEN N. MURRAY' AND .MARK M. 1,1 11 l.KR</p><p>aiively niauire bioiic commiiiiiitfs will IK- most rap-idly coloni/cfi hy .species wiih long repriMluctive sea-sons which prcnlucc tiumcrous njotilc spores orlar\'ae. We exteiifl lhe characierisiics of this pi! SJK&gt;-radically toxic sewage; in contrast, lhe unpver of certain temfX)rally domitiatii sjiecies (e.g.,Sc\to.Mf&gt;hon tomrntarm, Ef^ef^ mruzir\n, Ratfua sp.)with a trend towarcLs increa.se4l abundatice of struc-turallv-complex algae wilh apparently tnore (otn-plex life histories atid seasonal!)-optimi/ed retruil-tnent strategies. We ititerpret these pallerns asindicative of ittcrease*! biological interactiotis and tobxr characteristic of community developmetit utiderintertnediate and betiigti physical cotiditions.</p><p>We *rr rr\ ({fjirful to |jc k Vt I'.iiuhrr anil Keilh F. Ainoliiiiieiil F'ii&gt;Kt.irn nl Puhlicl.aw HH-37'. a&lt; amended, aiul h\ the lni&gt;erMi&gt; nl Calilornia.Waier Reumrcrt Onier. a% (arl of Water ReM-atih and leth-</p><p>l Prfi|ei No. A-HM-tlAl, and Wairr Rrwnirte* OnicrW4i\fiuit, 7th Ke|&gt;.</p><p>I)a\lon, I*. K. 1**71. (;oiti|H-tition, ilistiiilMiiie. ,nul ciMnniutiti&gt;orgatii^atiott: the provision atxl sul)sact of M-wage on the distrihution. ahundaticratid community Mructure ol iiHkv ititettidal macro-otgati-isms. Mar. HuJ. .10:277-91.</p><p>Munda. I. 1974. Change* and auccession in the lieiithic algalasMK iation* of slightly |Hilluted halHtatx. HfV. Inl. Ofranngr-Mfft. .34;37-.V..</p><p>Milita&gt;. S N *: Ijttler. M M. 1974. Biological featuies of iti-tertidal coinmunities near the U..S. Nav\ sewage outfall. W&gt;l*win i-go .3!Hi:l-8.1.</p><p>Ncirthcraft. R. I). I'MH. Marine algal ciiloni/ation on lhe Men*teie&gt; Peninsula. Calilor Ilia. Am.J. tint. 3.':3'.M"&gt;-49. I hr strategy ol rtinyMrin dcvclopmrnl. Sfi-rn,f I(i4:2ti2-7O.</p><p>Pieloii, F, C. l ot llhnois Ptess. t'llMiia. 117 PP'</p><p>WiddoWMin. I . B. 1972. (iiowth late tn t.girpn as a measureof |MillutioM Prm. Inl. Srawrnt S\mf&gt; 7:2ceae (brown algae). I'""''Catt/ I'utft. Hm. .10:1-88.</p></li></ul>