Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities
Stones released by melting icebergs are called dropstones, and these stones constitute island-like hard-bottom habitats at high latitudes. In 2012, dropstone megafauna in the HAUSGARTEN observatory in the Fram Strait was sampled photographically. We tested the hypothesis that dropstones would have t...
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ftawi:oai:epic.awi.de:37698 2024-09-09T19:40:42+00:00 Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities Meyer, Kirstin Young, Craig Sweetman, A. K. Taylor, James Soltwedel, Thomas Bergmann, Melanie 2016 application/pdf https://epic.awi.de/id/eprint/37698/ https://epic.awi.de/id/eprint/37698/1/Meyer_2016.pdf https://hdl.handle.net/10013/epic.48542 https://hdl.handle.net/10013/epic.48542.d001 unknown INTER-RESEARCH https://epic.awi.de/id/eprint/37698/1/Meyer_2016.pdf https://hdl.handle.net/10013/epic.48542.d001 Meyer, K. , Young, C. , Sweetman, A. K. , Taylor, J. , Soltwedel, T. orcid:0000-0002-8214-5937 and Bergmann, M. orcid:0000-0001-5212-9808 (2016) Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities , Marine Ecology-Progress Series, 556 , pp. 45-57 . hdl:10013/epic.48542 EPIC3Marine Ecology-Progress Series, INTER-RESEARCH, 556, pp. 45-57, ISSN: 0171-8630 Article isiRev 2016 ftawi 2024-06-24T04:11:05Z Stones released by melting icebergs are called dropstones, and these stones constitute island-like hard-bottom habitats at high latitudes. In 2012, dropstone megafauna in the HAUSGARTEN observatory in the Fram Strait was sampled photographically. We tested the hypothesis that dropstones would have the same species distribution patterns as terrestrial islands, using 5 patterns commonly found in the classical island literature. Higher richness, diversity, and abundance of fauna occurred on larger stones and on stones near a deep-water rocky reef. These patterns can be explained by the greater surface area of larger stones, the exposure of larger stones to faster current higher in the benthic boundary layer, and increased larval supply from the rocky reef. Some pairs of morphotypes (12 pairs out of 56 morphotypes and 1540 possible pairs) co-occurred less often than expected by chance. While similar patterns have been attributed to interspecific competition in the classical island literature, we offer alternative mechanisms for dropstones. Non-random co-occurrence on dropstones may be explained by larval dispersal. Dropstone fauna had an overdispersed (clumped) distribution, so pairs of morphotypes may have negative non-random co-occurrence simply because short larval life and limited dispersal ability prevent them from having randomly overlapping distributions. In addition, we found 8 morphotype pairs that co-occurred more often than expected by chance because of epibiontism. The patterns found in dropstone communities resemble terrestrial islands, but different mechanisms may be responsible. Article in Journal/Newspaper Fram Strait Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Stones released by melting icebergs are called dropstones, and these stones constitute island-like hard-bottom habitats at high latitudes. In 2012, dropstone megafauna in the HAUSGARTEN observatory in the Fram Strait was sampled photographically. We tested the hypothesis that dropstones would have the same species distribution patterns as terrestrial islands, using 5 patterns commonly found in the classical island literature. Higher richness, diversity, and abundance of fauna occurred on larger stones and on stones near a deep-water rocky reef. These patterns can be explained by the greater surface area of larger stones, the exposure of larger stones to faster current higher in the benthic boundary layer, and increased larval supply from the rocky reef. Some pairs of morphotypes (12 pairs out of 56 morphotypes and 1540 possible pairs) co-occurred less often than expected by chance. While similar patterns have been attributed to interspecific competition in the classical island literature, we offer alternative mechanisms for dropstones. Non-random co-occurrence on dropstones may be explained by larval dispersal. Dropstone fauna had an overdispersed (clumped) distribution, so pairs of morphotypes may have negative non-random co-occurrence simply because short larval life and limited dispersal ability prevent them from having randomly overlapping distributions. In addition, we found 8 morphotype pairs that co-occurred more often than expected by chance because of epibiontism. The patterns found in dropstone communities resemble terrestrial islands, but different mechanisms may be responsible. |
format |
Article in Journal/Newspaper |
author |
Meyer, Kirstin Young, Craig Sweetman, A. K. Taylor, James Soltwedel, Thomas Bergmann, Melanie |
spellingShingle |
Meyer, Kirstin Young, Craig Sweetman, A. K. Taylor, James Soltwedel, Thomas Bergmann, Melanie Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities |
author_facet |
Meyer, Kirstin Young, Craig Sweetman, A. K. Taylor, James Soltwedel, Thomas Bergmann, Melanie |
author_sort |
Meyer, Kirstin |
title |
Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities |
title_short |
Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities |
title_full |
Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities |
title_fullStr |
Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities |
title_full_unstemmed |
Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities |
title_sort |
rocky islands in a sea of mud: biotic and abiotic factors structuring deep-sea dropstone communities |
publisher |
INTER-RESEARCH |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/37698/ https://epic.awi.de/id/eprint/37698/1/Meyer_2016.pdf https://hdl.handle.net/10013/epic.48542 https://hdl.handle.net/10013/epic.48542.d001 |
genre |
Fram Strait |
genre_facet |
Fram Strait |
op_source |
EPIC3Marine Ecology-Progress Series, INTER-RESEARCH, 556, pp. 45-57, ISSN: 0171-8630 |
op_relation |
https://epic.awi.de/id/eprint/37698/1/Meyer_2016.pdf https://hdl.handle.net/10013/epic.48542.d001 Meyer, K. , Young, C. , Sweetman, A. K. , Taylor, J. , Soltwedel, T. orcid:0000-0002-8214-5937 and Bergmann, M. orcid:0000-0001-5212-9808 (2016) Rocky islands in a sea of mud: Biotic and abiotic factors structuring deep-sea dropstone communities , Marine Ecology-Progress Series, 556 , pp. 45-57 . hdl:10013/epic.48542 |
_version_ |
1809910127156789248 |