Small-Scale Heterogeneity in Deep-Sea Nematode Communities around Biogenic Structures
The unexpected high species richness of deep-sea sediments gives rise to the questions, which processes produce and maintain diversity in the deep sea, and at what spatial scales do these processes operate? The idea of a small-scale habitat structure at the deep-sea floor provides the background for...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.287.2589 2023-05-15T15:09:48+02:00 Small-Scale Heterogeneity in Deep-Sea Nematode Communities around Biogenic Structures Christiane Hasemann Thomas Soltwedel The Pennsylvania State University CiteSeerX Archives 2011 application/zip http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.287.2589 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.287.2589 Metadata may be used without restrictions as long as the oai identifier remains attached to it. ftp://ftp.ncbi.nlm.nih.gov/pub/pmc/00/04/PLoS_One_2011_Dec_28_6(12)_e29152.tar.gz text 2011 ftciteseerx 2016-01-07T21:20:49Z The unexpected high species richness of deep-sea sediments gives rise to the questions, which processes produce and maintain diversity in the deep sea, and at what spatial scales do these processes operate? The idea of a small-scale habitat structure at the deep-sea floor provides the background for this study. At small scales biogenic structures create a heterogeneous environment that influences the structure of the surrounding communities and the dynamics of the meiobenthic populations. As an example for biogenic structures, small deep-sea sponges (Tentorium semisuberites Schmidt 1870) and their sedimentary environment were investigated for small-scale distribution patterns of benthic deep-sea nematodes. Sampling was carried out with the remotely operated vehicle Victor 6000 at the Arctic deep-sea observatory HAUSGARTEN. In order to investigate nematode community patterns sediment cores around three small sponges and corresponding control cores were analysed. A total of approx. 5800 nematodes were identified. The comparison of the nematode communities from sponge and control samples indicated an influence of the biogenic structure ‘‘sponge’ ’ on diversity patterns and habitat heterogeneity. The increased number of nematode species and functional groups found in the sediments around the sponges suggest that on a small scale the sponge acts as a gradient and creates a more divers habitat structure. The nematode community from the sponge sediments shows a greater taxonomic variance and species richness together with lower relative abundances of the species compared to those from control sediments. Obviously, the Text Arctic Unknown Arctic |
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The unexpected high species richness of deep-sea sediments gives rise to the questions, which processes produce and maintain diversity in the deep sea, and at what spatial scales do these processes operate? The idea of a small-scale habitat structure at the deep-sea floor provides the background for this study. At small scales biogenic structures create a heterogeneous environment that influences the structure of the surrounding communities and the dynamics of the meiobenthic populations. As an example for biogenic structures, small deep-sea sponges (Tentorium semisuberites Schmidt 1870) and their sedimentary environment were investigated for small-scale distribution patterns of benthic deep-sea nematodes. Sampling was carried out with the remotely operated vehicle Victor 6000 at the Arctic deep-sea observatory HAUSGARTEN. In order to investigate nematode community patterns sediment cores around three small sponges and corresponding control cores were analysed. A total of approx. 5800 nematodes were identified. The comparison of the nematode communities from sponge and control samples indicated an influence of the biogenic structure ‘‘sponge’ ’ on diversity patterns and habitat heterogeneity. The increased number of nematode species and functional groups found in the sediments around the sponges suggest that on a small scale the sponge acts as a gradient and creates a more divers habitat structure. The nematode community from the sponge sediments shows a greater taxonomic variance and species richness together with lower relative abundances of the species compared to those from control sediments. Obviously, the |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Christiane Hasemann Thomas Soltwedel |
spellingShingle |
Christiane Hasemann Thomas Soltwedel Small-Scale Heterogeneity in Deep-Sea Nematode Communities around Biogenic Structures |
author_facet |
Christiane Hasemann Thomas Soltwedel |
author_sort |
Christiane Hasemann |
title |
Small-Scale Heterogeneity in Deep-Sea Nematode Communities around Biogenic Structures |
title_short |
Small-Scale Heterogeneity in Deep-Sea Nematode Communities around Biogenic Structures |
title_full |
Small-Scale Heterogeneity in Deep-Sea Nematode Communities around Biogenic Structures |
title_fullStr |
Small-Scale Heterogeneity in Deep-Sea Nematode Communities around Biogenic Structures |
title_full_unstemmed |
Small-Scale Heterogeneity in Deep-Sea Nematode Communities around Biogenic Structures |
title_sort |
small-scale heterogeneity in deep-sea nematode communities around biogenic structures |
publishDate |
2011 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.287.2589 |
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Arctic |
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Arctic |
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Arctic |
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Arctic |
op_source |
ftp://ftp.ncbi.nlm.nih.gov/pub/pmc/00/04/PLoS_One_2011_Dec_28_6(12)_e29152.tar.gz |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.287.2589 |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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