Patterns and trends of macrobenthic abundance, biomass and production in the deep Arctic Ocean
Little is known about the distribution and dynamics of macrobenthic communities of the deep Arctic Ocean. The few previous studies report low standing stocks and confirm a gradient with declining biomass from the slopes down to the basins, as commonly reported for deep-sea benthos. In this study, we...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Norwegian Polar Institute
2015
|
Subjects: | |
Online Access: | https://polarresearch.net/index.php/polar/article/view/3534 |
id |
ftjpolarres:oai:journals.openacademia.net:article/3534 |
---|---|
record_format |
openpolar |
spelling |
ftjpolarres:oai:journals.openacademia.net:article/3534 2023-05-15T14:36:56+02:00 Patterns and trends of macrobenthic abundance, biomass and production in the deep Arctic Ocean Degen, Renate Vedenin, Andrey Gusky, Manuela Boetius, Antje Brey, Thomas 2015-08-26 application/pdf application/xml https://polarresearch.net/index.php/polar/article/view/3534 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/3534/9187 https://polarresearch.net/index.php/polar/article/view/3534/9188 https://polarresearch.net/index.php/polar/article/view/3534 Polar Research; Vol 34 (2015) 1751-8369 Deep sea benthos macroinvertebrate carbon flux info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftjpolarres 2021-11-11T19:14:21Z Little is known about the distribution and dynamics of macrobenthic communities of the deep Arctic Ocean. The few previous studies report low standing stocks and confirm a gradient with declining biomass from the slopes down to the basins, as commonly reported for deep-sea benthos. In this study, we investigated regional differences of faunal abundance and biomass, and made for the first time ever estimates of deep Arctic community production by using a multi-parameter artificial neural network model. The underlying data set combines data from recent field studies with published and unpublished data from the past 20 years, to analyse the influence of water depth, geographical latitude and sea-ice concentration on Arctic benthic communities. We were able to confirm the previously described negative relationship of macrofauna standing stock with water depth in the Arctic deep sea, while also detecting substantial regional differences. Furthermore, abundance, biomass and production decreased significantly with increasing sea-ice extent (towards higher latitudes) down to values <200 ind m−2, <65 mg C m−2 and <73 mg C m−2 y−1, respectively. In contrast, stations under the seasonal ice zone regime showed much higher standing stock and production (up to 2500 mg C m−2 y−1), even at depths down to 3700 m. We conclude that particle flux is the key factor structuring benthic communities in the deep Arctic Ocean as it explains both the low values in the ice-covered Arctic basins and the higher values in the seasonal ice zone. Article in Journal/Newspaper Arctic Arctic Ocean Polar Research Sea ice Polar Research (E-Journal) Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Polar Research (E-Journal) |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Deep sea benthos macroinvertebrate carbon flux |
spellingShingle |
Deep sea benthos macroinvertebrate carbon flux Degen, Renate Vedenin, Andrey Gusky, Manuela Boetius, Antje Brey, Thomas Patterns and trends of macrobenthic abundance, biomass and production in the deep Arctic Ocean |
topic_facet |
Deep sea benthos macroinvertebrate carbon flux |
description |
Little is known about the distribution and dynamics of macrobenthic communities of the deep Arctic Ocean. The few previous studies report low standing stocks and confirm a gradient with declining biomass from the slopes down to the basins, as commonly reported for deep-sea benthos. In this study, we investigated regional differences of faunal abundance and biomass, and made for the first time ever estimates of deep Arctic community production by using a multi-parameter artificial neural network model. The underlying data set combines data from recent field studies with published and unpublished data from the past 20 years, to analyse the influence of water depth, geographical latitude and sea-ice concentration on Arctic benthic communities. We were able to confirm the previously described negative relationship of macrofauna standing stock with water depth in the Arctic deep sea, while also detecting substantial regional differences. Furthermore, abundance, biomass and production decreased significantly with increasing sea-ice extent (towards higher latitudes) down to values <200 ind m−2, <65 mg C m−2 and <73 mg C m−2 y−1, respectively. In contrast, stations under the seasonal ice zone regime showed much higher standing stock and production (up to 2500 mg C m−2 y−1), even at depths down to 3700 m. We conclude that particle flux is the key factor structuring benthic communities in the deep Arctic Ocean as it explains both the low values in the ice-covered Arctic basins and the higher values in the seasonal ice zone. |
format |
Article in Journal/Newspaper |
author |
Degen, Renate Vedenin, Andrey Gusky, Manuela Boetius, Antje Brey, Thomas |
author_facet |
Degen, Renate Vedenin, Andrey Gusky, Manuela Boetius, Antje Brey, Thomas |
author_sort |
Degen, Renate |
title |
Patterns and trends of macrobenthic abundance, biomass and production in the deep Arctic Ocean |
title_short |
Patterns and trends of macrobenthic abundance, biomass and production in the deep Arctic Ocean |
title_full |
Patterns and trends of macrobenthic abundance, biomass and production in the deep Arctic Ocean |
title_fullStr |
Patterns and trends of macrobenthic abundance, biomass and production in the deep Arctic Ocean |
title_full_unstemmed |
Patterns and trends of macrobenthic abundance, biomass and production in the deep Arctic Ocean |
title_sort |
patterns and trends of macrobenthic abundance, biomass and production in the deep arctic ocean |
publisher |
Norwegian Polar Institute |
publishDate |
2015 |
url |
https://polarresearch.net/index.php/polar/article/view/3534 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Polar Research Sea ice |
genre_facet |
Arctic Arctic Ocean Polar Research Sea ice |
op_source |
Polar Research; Vol 34 (2015) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/3534/9187 https://polarresearch.net/index.php/polar/article/view/3534/9188 https://polarresearch.net/index.php/polar/article/view/3534 |
_version_ |
1766309463111761920 |