MARINE ECOLOGY PROGRESS Prog. Ser. Overgrowth competition bryozoans se - PDF document

MARINE ECOLOGY PROGRESS Prog. Ser. Overgrowth competition bryozoans settled J. J. Investigaciones Cientificas Tecnicas (CONICET), Museo (SUPOZO~~) S~~]SO~I~UO[ Pr[ayJOXZJ 'S1 .SOJ&'JOUOU e!sndouq~e1~ 'p[ .euerzaren[e e[nuoqcun 'C[ .e~ruo6ejed .3 '21 'euefieX 3 '.[l -!a[[rnure6noq '01 .eur[eXq ellarodap3 '6 .ey~euoru eugjrcus '8 .e~ruo6eled ellaarpuv 'L ~sues~ue6~0 erodrlnqn~ 'g '(salaeqsA1od) .ds epyJuecuo8 'S 'ua.urad eRayJuewo8 'p 'runlqal e~rdsoae[o~ord '& 'ruasurnal er!dsoae[ered 'Z :[a~~~run]) .ds urnrp~ldv '1 .a~nsodxa jo our 6 iaye ~aued e jo axpng -1 %!,I C? I sueozohq ur uorlrladuros ql~ol6la~o edde3 zadol circular colony 1405 interspecific among the species was recorded. 223 (15.9 Interspecific competition and the tions with most clear, with encounters between rnonacha, Exochella longiros- were the there was no clear the other cases. However, that the dominance colonies, which larger than only fre- competition with the greater abundance not reflect the substratum. can be effective in over it, basal parts the other arms, makes the number other rare high competitive involved in more than (see text), the numbers the species shown above. The right corner interacting species. interspecific competition. significant differ- competitive ability. Intraspecific competition Overgrowth competition against number the slope: is to budding pattern. is similar in both a given growth over a larger area the substratum, thus dominance hierarchies is well environments (Quinn therein). Resource monopolization by a predation or phy- a certain level 1974, 1984, Russ 1980). be widespread, has been several assem- These are intransitive relationships loops by which low-ranked species environments with disturbance, recruitment rates recently analyzed Buss 1984, Karlson data in indicate that this bryozoan essentially hierarchical. petitive relationships could competition. While in frontal both growing rear encounters involve a interactions, increasing may also that several sponges effects, which in marine has been regarded as competitive capability a bryozoan present study a clear correlation competitive performance has been pointed out (1976) in his Mediterranean fauna. indicate that interacting species different overgrowth abilities. are equal, size strongly Overgrowth competition selected species good example morphology but is therefore consistent with model developed which predicts that runner-like lower interference competi- growth rates it is present evidence that competitive perform- ance by sexual maturity taxonomic identification This work was supported the Consejo Investigaciones Cientificas y body wall Schizoporella unicornis Better living living )Aspects of sponge biology. Academic Press, New York, p 315-327 BUS^. L. W. (1979). Habitat selection, directional growth spatial refuges: more hiding B. R. Competitive intransitivity Pacific rocky shoreline. In: Larwood, Larwood, )Recent and fossil Bryozoa Olsen, Fredensborg, (1979). Competitive nontransitive competitive relationships cryptic coral Marine macroalgae a study interspecific competi- the barnacle 42: 710-723 (1971). Competition, disturbance and bryozoan population. Hist. 6: Harmelin, J.-G. ozoaires Cyclostomes) In: Larwood, Press. London, In: Larwood. Press, London, the adaptive benthic organisms Pergamon Press, London, In: Larwood, P., Rosen, organisms. Academic Competitive interactions short course. Sci. U.S.A. sessile colonial phenotypic variation. (1984). Competition, disturbance C. (1981). Competitive networks a simulation Biol. Ecol Spatial relationships processes in benthic intertidal animal Biol. Ecol. (1961). Intraspecific competition sedentary marine animals. Symp. la ria Skeletal overgrowths cheilostome bryozoans. Palaeontology