Ecological stoichiometry in six species of Antarctic marine benthos
Elemental (C, N, P) composition was examined in 6 benthic marine invertebrates from Antarctica: 2 suspension feeders (the holothurian Heterocucumis steineni and the polychaete Thelepus cincinnatus), 1 epifaunal grazer (the limpet Nacella concinna), 1 deposit feeder (the polychaete Flabelligera munda...
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ftnerc:oai:nora.nerc.ac.uk:11425 2023-05-15T13:45:10+02:00 Ecological stoichiometry in six species of Antarctic marine benthos Clarke, Andrew 2008 text http://nora.nerc.ac.uk/id/eprint/11425/ https://nora.nerc.ac.uk/id/eprint/11425/1/m369p025.pdf en eng Inter-Research https://nora.nerc.ac.uk/id/eprint/11425/1/m369p025.pdf Clarke, Andrew orcid:0000-0002-7582-3074 . 2008 Ecological stoichiometry in six species of Antarctic marine benthos. Marine Ecology Progress Series, 369. 25-37. https://doi.org/10.3354/meps07670 <https://doi.org/10.3354/meps07670> Marine Sciences Biology and Microbiology Zoology Ecology and Environment Publication - Article PeerReviewed 2008 ftnerc https://doi.org/10.3354/meps07670 2023-02-04T19:27:21Z Elemental (C, N, P) composition was examined in 6 benthic marine invertebrates from Antarctica: 2 suspension feeders (the holothurian Heterocucumis steineni and the polychaete Thelepus cincinnatus), 1 epifaunal grazer (the limpet Nacella concinna), 1 deposit feeder (the polychaete Flabelligera mundata), 1 predator (the nemertean Parborlasia corrugatus) and an omnivore (the asteroid Odontaster validus). Correction for inorganic carbon was necessary only for O. validus, where skeletal carbonate produces a high mineral ash content. Elemental composition of tissue was 49 to 60 % C, 10 to 14 % N and 0.7 to 1.3 % P (all on an organic mass basis); these are all within the normal range of values for aquatic invertebrates. The most variable component was P, though variability was much lower than in stream insects. Stoichiometric molar ratios (C:P, C:N, N:P) were all typical of consumers, with a strong inverse relationship across species between %C and %N in tissue. Stoichiometry varied strongly between phyla, with less variation between species within phyla. There were also indications of variations in elemental composition (C:N ratio and %P) with feeding mode, but the limited range of taxa studied constrains this conclusion. Despite differences in nutrient status, the elemental composition of marine and freshwater benthos were, with the exception of insects, closely similar. Despite the very slow growth rates that characterise polar marine benthos, P contents were relatively high, suggesting that the predictions of the growth rate hypothesis are not upheld at low temperatures. Article in Journal/Newspaper Antarc* Antarctic Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic Nacella ENVELOPE(-60.783,-60.783,-62.467,-62.467) Marine Ecology Progress Series 369 25 37 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences Biology and Microbiology Zoology Ecology and Environment |
spellingShingle |
Marine Sciences Biology and Microbiology Zoology Ecology and Environment Clarke, Andrew Ecological stoichiometry in six species of Antarctic marine benthos |
topic_facet |
Marine Sciences Biology and Microbiology Zoology Ecology and Environment |
description |
Elemental (C, N, P) composition was examined in 6 benthic marine invertebrates from Antarctica: 2 suspension feeders (the holothurian Heterocucumis steineni and the polychaete Thelepus cincinnatus), 1 epifaunal grazer (the limpet Nacella concinna), 1 deposit feeder (the polychaete Flabelligera mundata), 1 predator (the nemertean Parborlasia corrugatus) and an omnivore (the asteroid Odontaster validus). Correction for inorganic carbon was necessary only for O. validus, where skeletal carbonate produces a high mineral ash content. Elemental composition of tissue was 49 to 60 % C, 10 to 14 % N and 0.7 to 1.3 % P (all on an organic mass basis); these are all within the normal range of values for aquatic invertebrates. The most variable component was P, though variability was much lower than in stream insects. Stoichiometric molar ratios (C:P, C:N, N:P) were all typical of consumers, with a strong inverse relationship across species between %C and %N in tissue. Stoichiometry varied strongly between phyla, with less variation between species within phyla. There were also indications of variations in elemental composition (C:N ratio and %P) with feeding mode, but the limited range of taxa studied constrains this conclusion. Despite differences in nutrient status, the elemental composition of marine and freshwater benthos were, with the exception of insects, closely similar. Despite the very slow growth rates that characterise polar marine benthos, P contents were relatively high, suggesting that the predictions of the growth rate hypothesis are not upheld at low temperatures. |
format |
Article in Journal/Newspaper |
author |
Clarke, Andrew |
author_facet |
Clarke, Andrew |
author_sort |
Clarke, Andrew |
title |
Ecological stoichiometry in six species of Antarctic marine benthos |
title_short |
Ecological stoichiometry in six species of Antarctic marine benthos |
title_full |
Ecological stoichiometry in six species of Antarctic marine benthos |
title_fullStr |
Ecological stoichiometry in six species of Antarctic marine benthos |
title_full_unstemmed |
Ecological stoichiometry in six species of Antarctic marine benthos |
title_sort |
ecological stoichiometry in six species of antarctic marine benthos |
publisher |
Inter-Research |
publishDate |
2008 |
url |
http://nora.nerc.ac.uk/id/eprint/11425/ https://nora.nerc.ac.uk/id/eprint/11425/1/m369p025.pdf |
long_lat |
ENVELOPE(-60.783,-60.783,-62.467,-62.467) |
geographic |
Antarctic Nacella |
geographic_facet |
Antarctic Nacella |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
https://nora.nerc.ac.uk/id/eprint/11425/1/m369p025.pdf Clarke, Andrew orcid:0000-0002-7582-3074 . 2008 Ecological stoichiometry in six species of Antarctic marine benthos. Marine Ecology Progress Series, 369. 25-37. https://doi.org/10.3354/meps07670 <https://doi.org/10.3354/meps07670> |
op_doi |
https://doi.org/10.3354/meps07670 |
container_title |
Marine Ecology Progress Series |
container_volume |
369 |
container_start_page |
25 |
op_container_end_page |
37 |
_version_ |
1766214557264510976 |