A quantitative scuba-diving survey of the sublittoral macrobenthos at subantarctic Marion Island
A SCUBA-diving survey of the macrobenthos of hard substrata in the sublittoral zone at subantarctic Marion Island was conducted during March and April 1988. Dense beds (12 kg m-2) of the kelp Macrocystis laevis occur in depths > 5 m. Durvillaea antarctica is found along the infralittoral fringe a...
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1992
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ftmurdochunivall:oai:alma.61MUN_INST:11135307880007891 2024-09-15T17:41:02+00:00 A quantitative scuba-diving survey of the sublittoral macrobenthos at subantarctic Marion Island Beckley, L.E. Branch, G.M. 1992 https://doi.org/10.1007/BF00237948 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/A-quantitative-scuba-diving-survey-of-the/991005540966107891 eng eng Springer-Verlag ispartof: Polar Biology spage 553 epage 563 issue 8 vol 11 doi:10.1007/BF00237948 0722-4060 http://dx.doi.org/10.1007/BF00237948 991005540966107891 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/A-quantitative-scuba-diving-survey-of-the/991005540966107891 alma:61MUN_INST/bibs/991005540966107891 © 1992 Springer-Verlag. text Article 1992 ftmurdochunivall https://doi.org/10.1007/BF00237948 2024-08-15T00:52:49Z A SCUBA-diving survey of the macrobenthos of hard substrata in the sublittoral zone at subantarctic Marion Island was conducted during March and April 1988. Dense beds (12 kg m-2) of the kelp Macrocystis laevis occur in depths > 5 m. Durvillaea antarctica is found along the infralittoral fringe and Desmarestia rossi and Durvillaea sp. occur in a narrow zone from 3 m-6 m. Under-storey algae (chiefly rhodophytes) tend to decrease in biomass with depth, with mean values of 1.57 kg m-2 at 5m, 0.75 kg m-2 at 10m and 0.49 kg m-2 at 15 m. Encrusting coralline algae are particularly abundant in shallow areas (-x = 0.92 kg m-2) but are insignificant in deeper areas. Total biomass of macrozoobenthos increased with depth with mean values of 0.12 kg m-2 at 5 m, 0.34 kg m-2 at 10 m and 0.46 kg m-2 at 15 m. Polychaetes, crustaceans, echinoderms, molluscs, sponges and bryozoans dominated the macrozoobenthos in terms of biomass. Approximately 200 species of macrobenthic animals were recorded and numerically, polychaetes, crustaceans, molluscs, nematodes and echinoderms dominated. The sublittoral benthos at Marion Island is compared with that occurring at other subantarctic and Antarctic islands, in particular, the Kerguelen Island group. Zoogeographic trends and the possible effects of nutrient input from seabird guano are briefly discussed Article in Journal/Newspaper Antarc* Antarctic Antarctica Marion Island Polar Biology Murdoch University Research Portal Polar Biology 11 8 |
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Murdoch University Research Portal |
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English |
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A SCUBA-diving survey of the macrobenthos of hard substrata in the sublittoral zone at subantarctic Marion Island was conducted during March and April 1988. Dense beds (12 kg m-2) of the kelp Macrocystis laevis occur in depths > 5 m. Durvillaea antarctica is found along the infralittoral fringe and Desmarestia rossi and Durvillaea sp. occur in a narrow zone from 3 m-6 m. Under-storey algae (chiefly rhodophytes) tend to decrease in biomass with depth, with mean values of 1.57 kg m-2 at 5m, 0.75 kg m-2 at 10m and 0.49 kg m-2 at 15 m. Encrusting coralline algae are particularly abundant in shallow areas (-x = 0.92 kg m-2) but are insignificant in deeper areas. Total biomass of macrozoobenthos increased with depth with mean values of 0.12 kg m-2 at 5 m, 0.34 kg m-2 at 10 m and 0.46 kg m-2 at 15 m. Polychaetes, crustaceans, echinoderms, molluscs, sponges and bryozoans dominated the macrozoobenthos in terms of biomass. Approximately 200 species of macrobenthic animals were recorded and numerically, polychaetes, crustaceans, molluscs, nematodes and echinoderms dominated. The sublittoral benthos at Marion Island is compared with that occurring at other subantarctic and Antarctic islands, in particular, the Kerguelen Island group. Zoogeographic trends and the possible effects of nutrient input from seabird guano are briefly discussed |
format |
Article in Journal/Newspaper |
author |
Beckley, L.E. Branch, G.M. |
spellingShingle |
Beckley, L.E. Branch, G.M. A quantitative scuba-diving survey of the sublittoral macrobenthos at subantarctic Marion Island |
author_facet |
Beckley, L.E. Branch, G.M. |
author_sort |
Beckley, L.E. |
title |
A quantitative scuba-diving survey of the sublittoral macrobenthos at subantarctic Marion Island |
title_short |
A quantitative scuba-diving survey of the sublittoral macrobenthos at subantarctic Marion Island |
title_full |
A quantitative scuba-diving survey of the sublittoral macrobenthos at subantarctic Marion Island |
title_fullStr |
A quantitative scuba-diving survey of the sublittoral macrobenthos at subantarctic Marion Island |
title_full_unstemmed |
A quantitative scuba-diving survey of the sublittoral macrobenthos at subantarctic Marion Island |
title_sort |
quantitative scuba-diving survey of the sublittoral macrobenthos at subantarctic marion island |
publisher |
Springer-Verlag |
publishDate |
1992 |
url |
https://doi.org/10.1007/BF00237948 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/A-quantitative-scuba-diving-survey-of-the/991005540966107891 |
genre |
Antarc* Antarctic Antarctica Marion Island Polar Biology |
genre_facet |
Antarc* Antarctic Antarctica Marion Island Polar Biology |
op_relation |
ispartof: Polar Biology spage 553 epage 563 issue 8 vol 11 doi:10.1007/BF00237948 0722-4060 http://dx.doi.org/10.1007/BF00237948 991005540966107891 https://researchportal.murdoch.edu.au/esploro/outputs/journalArticle/A-quantitative-scuba-diving-survey-of-the/991005540966107891 alma:61MUN_INST/bibs/991005540966107891 |
op_rights |
© 1992 Springer-Verlag. |
op_doi |
https://doi.org/10.1007/BF00237948 |
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Polar Biology |
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11 |
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8 |
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