Species - area relationships for sandy beach macrobenthos in the context of intertidal width

• Autorzy: McLachlan A. , Dorvlo A.
• Języki publikacji: EN

Abstrakty

EN

The marine species richness (MSR) recorded in 159 sandy beach surveys was analysed in relation to beach width (W). MSR is the number of macrobenthic species collected in a standard intertidal transect survey, excluding insects. Beach width (W) was estimated by dividing the spring tide range [m] by the beach face slope, to give a value in [m]. The relationship between MSR and W was best described by a semilog (exponential) model, which was highly significant: MSR = -5.2 + 10.8 log W. The fit of a power model (MSR = cWz) was also significant. The steep slope of the curve for a power model (z=0.49) suggests that beaches function as isolated rather than contiguous habitats and that the nature of the habitat becomes more benign as beaches widen. There are some latitudinal effects, with tropical beaches displaying a higher species-area relationship for any beach width than other regions.

Słowa kluczowe

EN

sandy beaches; macrofauna; benthos; island biogeography

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 2007
• Tom: No. 49 (1)
• Strony: 91--98
• Opis fizyczny: bibliogr. 16 poz., wykr.

Twórcy

autor

McLachlan A.

autor

Dorvlo A.

• College of Agricultural & Marine Sciences and College of Science, Sultan Qaboos University, Sultanate of Oman,

Bibliografia

• [1].Brazeiro A., 1999, Community patterns in sandy beaches of Chile: richness, composition, distribution and abundance of species, Rev. Chil. Hist. Nat., 72, 93-105.
• [2].Brazeiro A., 2001, Relationships between species richness and morphodynamics in sandy beaches: what are the underlying factors?, Mar. Ecol. Prog. Ser., 224, 35-44.
• [3].Connor E.F., McCoy E.D., 2001, Species-area relationships, [in:] Encyclopedia of biodiversity, S. Levin (ed.), Acad. Press, London, 397-411.
• [4].Defeo O., McLachlan A., 2005, Patterns, processes and regulatory mechanisms in sandy beach macrofauna: a multi-scale analysis, Mar. Ecol. Prog. Ser., 295, 1-20.
• [5].Gray J. S., 2002, Species richness of marine soft sediments, Mar. Ecol. Prog. Ser., 244, 285-297.
• [6].Gray J. S., Ugland K. I., Lambshead J., 2004, On species accumulation and speciesarea curves, Global Ecol. Biogeogr., 13, 567-568.
• [7].Hartnoll R.G., 1983, The species-area relationship on a sandy beach, [in:] Sandy beaches as ecosystems, A. McLachlan & T. Erasmus (eds.), Dr. W. Junk, The Hague, 473-479.
• [8].Jaramillo E., McLachlan A., Dugan J., 1995, Total sample area and estimates of species richness in exposed sandy beaches, Mar. Ecol. Prog. Ser., 119, 311-314.
• [9].MacArthur R., Wilson E. O., 1967, The theory of island biogeography, Princeton Univ. Press, New Jersey, 203 pp.
• [10].McLachlan A., Brown A.C., 2006, The ecology of sandy shores, 2nd edn., Acad. Press, New York, 373 pp.
• [11].McLachlan A., Dorvlo A., 2005, Global patterns in sandy beach macrobenthic communities, J. Coast. Res., 21 (4), 674-687.
• [12].McLachlan A., Dorvlo A., 2007, Global patterns in sandy beach macrobenthic communities: biological factors, J. Coast. Res., (in press).
• [13].Palmer M.W., 1990, The estimation of species richness by extrapolation, Ecology, 71, 1195-1198.
• [14].Sanders H. L., 1968, Marine benthic diversity: a comparative study, Am. Nat., 102, 243-282.
• [15].Schoeman D. S., Wheeler M., Wait M., 2003, The relative accuracy of standard estimates for macrofaunal abundance and species richness derived from selected intertidal transect designs used to sample exposed sandy beaches, Estuar. Coast. Shelf Sci., 58 (SI), 5-16.
• [16].Soares A.G., 2003, Sandy beach morphodynamics and macrobenthic communities in temperate, subtropical and tropical regions - a macroecological approach, Ph.D. thesis, Univ. Port Elizabeth, South Africa, (unpublished).