Abiotic Changes Driving Microphytoplankton Functional Diversity in Admiralty Bay, King George Island (Antarctica)
Environmental gradients can provide habitat-specific scenarios for community functional diversity (FD) that determine the composition of populations on both spatial and temporal scales. The western shelf of the Antarctic Peninsula has experiencing increasing air temperatures while the climate is tra...
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ftdoajarticles:oai:doaj.org/article:9b5722e799654ae99439b7e86d06c4dc 2023-05-15T13:32:37+02:00 Abiotic Changes Driving Microphytoplankton Functional Diversity in Admiralty Bay, King George Island (Antarctica) Domênica Teixeira de Lima Gleyci Aparecida Oliveira Moser Fernanda Reinhardt Piedras Leticia Cotrim da Cunha Denise Rivera Tenenbaum Márcio Murilo Barboza Tenório Marcos Vinícius Pereira Borges de Campos Thais de Oliveira Cornejo José Juan Barrera-Alba 2019-10-01T00:00:00Z https://doi.org/10.3389/fmars.2019.00638 https://doaj.org/article/9b5722e799654ae99439b7e86d06c4dc EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2019.00638/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2019.00638 https://doaj.org/article/9b5722e799654ae99439b7e86d06c4dc Frontiers in Marine Science, Vol 6 (2019) functional diversity microphytoplankton Antarctic abiotic variation meltwater Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2019 ftdoajarticles https://doi.org/10.3389/fmars.2019.00638 2022-12-30T21:11:23Z Environmental gradients can provide habitat-specific scenarios for community functional diversity (FD) that determine the composition of populations on both spatial and temporal scales. The western shelf of the Antarctic Peninsula has experiencing increasing air temperatures while the climate is transitioning to a warm-humid sub-Antarctic-type of climate. As a consequence, abiotic changes are leading to alterations in the trophic web. Microphytoplankton FD was analyzed across environmental gradients of sea surface temperature, salinity, meltwater percentage and nutrient availability in Admiralty Bay, South Shetland Islands, Western Antarctic Peninsula. Samples were collected during the austral summer from 2009 to 2011 and from 2013 to 2015, at Admiralty Bay for which FD indices were calculated based on species traits. The amount of meltwater (MW) present in Admiralty Bay groups microphytoplankton into communities according to physiological and ecological tolerances, thus leading to a greater FD. When meltwater dominated the bay (>2.25% MW scenarios iii - 2013-14 and iv - 2014-15), diatoms and dinoflagellates were codominant. An increase in the dinoflagellate fraction of microplankton, notably with auxotrophic and mixotrophic nutrition mode, can be considered a trigger for changes in the structure of the Antarctic food web. Our results suggest using Admiralty Bay as a model for studies on changes in microphytoplankton community composition and FD. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica King George Island South Shetland Islands Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Antarctic Peninsula Austral King George Island South Shetland Islands Admiralty Bay Western Shelf ENVELOPE(164.448,164.448,-77.780,-77.780) Frontiers in Marine Science 6 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
functional diversity microphytoplankton Antarctic abiotic variation meltwater Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
functional diversity microphytoplankton Antarctic abiotic variation meltwater Science Q General. Including nature conservation geographical distribution QH1-199.5 Domênica Teixeira de Lima Gleyci Aparecida Oliveira Moser Fernanda Reinhardt Piedras Leticia Cotrim da Cunha Denise Rivera Tenenbaum Márcio Murilo Barboza Tenório Marcos Vinícius Pereira Borges de Campos Thais de Oliveira Cornejo José Juan Barrera-Alba Abiotic Changes Driving Microphytoplankton Functional Diversity in Admiralty Bay, King George Island (Antarctica) |
topic_facet |
functional diversity microphytoplankton Antarctic abiotic variation meltwater Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Environmental gradients can provide habitat-specific scenarios for community functional diversity (FD) that determine the composition of populations on both spatial and temporal scales. The western shelf of the Antarctic Peninsula has experiencing increasing air temperatures while the climate is transitioning to a warm-humid sub-Antarctic-type of climate. As a consequence, abiotic changes are leading to alterations in the trophic web. Microphytoplankton FD was analyzed across environmental gradients of sea surface temperature, salinity, meltwater percentage and nutrient availability in Admiralty Bay, South Shetland Islands, Western Antarctic Peninsula. Samples were collected during the austral summer from 2009 to 2011 and from 2013 to 2015, at Admiralty Bay for which FD indices were calculated based on species traits. The amount of meltwater (MW) present in Admiralty Bay groups microphytoplankton into communities according to physiological and ecological tolerances, thus leading to a greater FD. When meltwater dominated the bay (>2.25% MW scenarios iii - 2013-14 and iv - 2014-15), diatoms and dinoflagellates were codominant. An increase in the dinoflagellate fraction of microplankton, notably with auxotrophic and mixotrophic nutrition mode, can be considered a trigger for changes in the structure of the Antarctic food web. Our results suggest using Admiralty Bay as a model for studies on changes in microphytoplankton community composition and FD. |
format |
Article in Journal/Newspaper |
author |
Domênica Teixeira de Lima Gleyci Aparecida Oliveira Moser Fernanda Reinhardt Piedras Leticia Cotrim da Cunha Denise Rivera Tenenbaum Márcio Murilo Barboza Tenório Marcos Vinícius Pereira Borges de Campos Thais de Oliveira Cornejo José Juan Barrera-Alba |
author_facet |
Domênica Teixeira de Lima Gleyci Aparecida Oliveira Moser Fernanda Reinhardt Piedras Leticia Cotrim da Cunha Denise Rivera Tenenbaum Márcio Murilo Barboza Tenório Marcos Vinícius Pereira Borges de Campos Thais de Oliveira Cornejo José Juan Barrera-Alba |
author_sort |
Domênica Teixeira de Lima |
title |
Abiotic Changes Driving Microphytoplankton Functional Diversity in Admiralty Bay, King George Island (Antarctica) |
title_short |
Abiotic Changes Driving Microphytoplankton Functional Diversity in Admiralty Bay, King George Island (Antarctica) |
title_full |
Abiotic Changes Driving Microphytoplankton Functional Diversity in Admiralty Bay, King George Island (Antarctica) |
title_fullStr |
Abiotic Changes Driving Microphytoplankton Functional Diversity in Admiralty Bay, King George Island (Antarctica) |
title_full_unstemmed |
Abiotic Changes Driving Microphytoplankton Functional Diversity in Admiralty Bay, King George Island (Antarctica) |
title_sort |
abiotic changes driving microphytoplankton functional diversity in admiralty bay, king george island (antarctica) |
publisher |
Frontiers Media S.A. |
publishDate |
2019 |
url |
https://doi.org/10.3389/fmars.2019.00638 https://doaj.org/article/9b5722e799654ae99439b7e86d06c4dc |
long_lat |
ENVELOPE(164.448,164.448,-77.780,-77.780) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Austral King George Island South Shetland Islands Admiralty Bay Western Shelf |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Austral King George Island South Shetland Islands Admiralty Bay Western Shelf |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island South Shetland Islands |
op_source |
Frontiers in Marine Science, Vol 6 (2019) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2019.00638/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2019.00638 https://doaj.org/article/9b5722e799654ae99439b7e86d06c4dc |
op_doi |
https://doi.org/10.3389/fmars.2019.00638 |
container_title |
Frontiers in Marine Science |
container_volume |
6 |
_version_ |
1766028736015106048 |