Abstract
The midlittoral zone at Paitilla Beach, Panama, Is occupied by a group of organisms closely associated with Tetraclita stalactifera panamensis. Upon death, this cirripede provides housing for a number of species bound by common substrata and interacting with each other due to their close physical proximity; the faunistic group associated with each barnacle qualifies then, as a small, well-defined community which represents a subsample of the more comprehensive midlittoral community dominated by T. stalactifera panamensis. In patches where it is abundant, T. stalactifera panamensis occupies 28% of the surface area available. It has a relative abundance of only 1% of the specimens found in the zone, but all the other 95 species (with an average of 26, 810 individuals/m2) identified from the area are associated either with the parietal canals, or the external or internal surfaces of T. stalactifera panamensis tests. Each one of these structures represents a habitat which provides surface for attachment, shelter, or both, to 37 species of polychaetes, 32 of mollusks, 20 of crustaceans, 3 of actiniarians, 2 of pycogonids, 2 of sipunculans and an unknown number of tanaid, nemertean and turbellarian species. The single most diverse space-niche is represented by the parietal canals (H=0.783), occupied mostly by polychaetes. dead barnacles harbor an average of 131 individuals per test, which compose a fauna of higher diversity (H=0.678) than that associated with live barnacles (H=0.163). The latter contain 53 specimens per test on the average. Although there is considerable overlapping of species associated with the different T. stalactifera panamensis space-niches, mollusks are clearly more abundant on internal surfaces, polychaetes in parietal, canals; Balanus spp. on external surfaces, and anemones at the base of the parapet on the external surfaces of the tests. Over 220 species of macro-invertebrates were identified from the rocky intertidal at Paitilla. Most of the species are concentrated in the lower (157 species, 1824 specimens/m2) and midlittoral (96 species, 26, 810 specimens/m2) intertidal zones. Splash zone is depauperate (6 species, 1578 specimens/m2). Of the entire fauna identified from the intertidal, 73 species (33%) occur in more than one zone and 147 (67%) are restricted to a particular belt. This last category of zone-restricted species breaks down into 42% for the lower intertidal, 17% for the midlittoral, 6% for the intermediate zone, and 2% for the splash zone.
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Literature Cited
Bakus, G.J.: Zonation in marine gastropods of Costa Rica and species diversity. Veliger 10, 207–211 (1968)
Barnes, H. and H.T. Powell: The development, general morphology and subsequent elimination of barnacle populations, Balanus crenatus and B. balanoides, after a heavy initial settlement. J. Anim. Ecol. 19, 175–179 (1950)
Birkeland, C.E., A.A. Reimer and J.R. Young: Effects of oil on tropical shore natural communities in Panama. FWQA, E.P.A. Report on project No. 18050 EFV, Contract No. 14-12-874 (1974) (Unpublished)
Connell, J.H.: Studies on some factors affecting the recruitment and mortality of natural populations of intertidal barnacles. In: Marine borers and fouling organisms, pp 226–233. Ed. by D.L. Ray. Seattle: University of Washington Press 1959
— The influence of interspecific competition and other factors on the distribution of the barnacle Chthamalus stellatus. Ecology 42, 710–723 (1961a)
— Effects of competition, predation by Thais lapillus, and other factors on natural populations of the barnacle Balanus balanoides. Ecol. Monogr. 31, 61–103 (1961b)
— A predator-prey system in the marine intertidal region. 1. Balanus glandula and several predatory species of Thais. Ecol. Monogr. 40, 49–78 (1970)
Dayton, P.K.: Competition, disturbance, and community organization: the provision and subsequent utilization of space in a rocky intertidal community. Ecol. Monogr. 41, 351–389 (1971)
Fager, E.W.: The community of invertebrates in decaying oak wood. J. Anim. Ecol. 37, 121–142 (1968)
Glynn, P.W.: Community composition, structure and interrelationships in the marine intertidal Endocladia muricata — Balanus glandula association in Monterrey Bay, California. Beaufortia 12, 1–98 (1965)
— A new genus and two new species of sphaeromatid isopods from the high intertidal zone at naos Island, Panama. Proc. biol. Soc. Wash. 81, 587–604 (1968)
Hatton, H.: Essais de bionomie explicative sur quelques espèces intercotidales d'algues et d'anumaux. Annls Inst. océanogr., Monaco 17, 241–348 (1938)
Knight-Jones, E.W.: Laboratory experiments on gregariousness during settling in Balanus balanoides and other barnacles. J. exp. Biol. 30, 584–598 (1953)
Kohn, A.J.: Environmental complexity and species diversity in the gastropod genus Conus on Indo-West Pacific reef platforms. Am. Nat. 101, 251–259 (1967)
Lewis, J.B.: The fauna of rocky shores of Barbados, West Indies. Can. J. Zool. 38, 391–435 (1960)
Lewis, J.R.: The ecology of rocky shores, 323 pp. London: English University Press Ltd. 1964
Lloyd, M., J.H. Zar and J.R. Karr: On the calculation of information — theoretical measures of diversity. Am. Midl. Nat. 79, 257–272 (1968)
MacArthur, R.H.: On the relative abundance of species. Am. Nat. 94, 25–36 (1960)
—: On the relative abundance of species. Am. Nat. 98, 387–397 (1964)
MacNae, W.: A general account of the fauna and flora of mangrove swamps and forests in the Indo-West Pacific region. In: Advances in marine biology, pp 73–270. Ed. by F.S. Russell and M. Young. New York: Academic Press 1968
Paine, R.T.: Food web complexity and species diversity. Am. Nat. 100, 65–75 (1966)
— The Pisaster-Tegula interaction: prey patches, predator food preference, and intertidal community structure. Ecology 50, 950–961 (1969)
Pielou, E.C.: The measurement of diversity in different types of biological collections. J. theor. Biol. 13, 131–144 (1966)
Poole, R.W.: An introduction to quantitative ecology, 532 pp. New York: McGraw Hill Book Co. 1974
Preston, F.-W.: The commonness and rarity of species. Ecology 29, 254–283 (1948)
— The canonical distribution of commonness and rarity, parts 1 and II. Ecology 43, 185–215 and 410–432 (1962)
Ricketts, E.F., J. Calvin and J.W. Hedgpeth: Between Pacific tides, 4th ed. 614 pp. Stanford, Calif.: Stanford University Press 1968
Sanders, H.L.: Marine benthic diversity: a comparative study. Am. Nat. 102, 243–282 (1968)
Stephenson, T.A. and A. Stephenson: The universal features of zonation between tidemarks on rocky coasts. J. Ecol. 37, 289–305 (1949)
——: Life between tidemarks on rocky shores, 425 pp. San Francisco: W.F. Freeman & Co. 1972
Thorson, G.: Life in the sea, 256 pp, New York: World University Library 1971
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Communicated by M.R. Tripp, Newark
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Reimer, A.A. Description of a Tetraclita stalactifera panamensis community on a rocky intertidal Pacific shore of Panama. Marine Biology 35, 225–238 (1976). https://doi.org/10.1007/BF00396871
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DOI: https://doi.org/10.1007/BF00396871