Marine vertebrates impact the bacterial community composition and food webs of Antarctic microbial mats
The biological activity of marine vertebrates represents an input of nutrients for Antarctic terrestrial biota, with relevant consequences for the entire ecosystem. Even though microbial mats assemble most of the biological diversity of the non-marine Antarctica, the effects of the local macrofauna...
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Online Access: | http://hdl.handle.net/10486/705783 https://doi.org/10.3389/fmicb.2022.841175 |
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ftuamadrid:oai:repositorio.uam.es:10486/705783 2023-05-15T13:31:21+02:00 Marine vertebrates impact the bacterial community composition and food webs of Antarctic microbial mats Almela Gómez, Pablo Velázquez, David Rico Eguizabal, Eugenio Justel Eusebio, Ana María Quesada del Corral, Antonio UAM. Departamento de Biología UAM. Departamento de Ecología 2022-12-22T14:48:08Z application/pdf http://hdl.handle.net/10486/705783 https://doi.org/10.3389/fmicb.2022.841175 eng eng Frontiers Frontiers in Microbiology https://www.frontiersin.org/articles/10.3389/fmicb.2022.841175/full Gobierno de España. PID2020-116520RB-I00 Gobierno de España. CTM2016-79741-R Gobierno de España. PCIN-2016-001 Frontiers in Microbiology 13 (2022): 8841175 1664302X http://hdl.handle.net/10486/705783 doi:10.3389/fmicb.2022.841175 8841175-1 8841175-16 13 Copyright © 2022 Almela, Velázquez, Rico, Justel and Quesada Reconocimiento openAccess penguins nitrogen phosphorus microbial mat trophic relationships bacterial community Antarctica Biología y Biomedicina / Biología article info:eu-repo/semantics/publishedVersion 2022 ftuamadrid https://doi.org/10.3389/fmicb.2022.841175 2022-12-28T00:12:31Z The biological activity of marine vertebrates represents an input of nutrients for Antarctic terrestrial biota, with relevant consequences for the entire ecosystem. Even though microbial mats assemble most of the biological diversity of the non-marine Antarctica, the effects of the local macrofauna on these microecosystems remain understudied. Using 16S rRNA gene sequencing, 13C and 15N stable isotopes, and by characterizing the P and N-derived nutrient levels, we evaluated the effects of penguins and other marine vertebrates on four microbial mats located along the Antarctic Peninsula. Our results show that P concentrations, C/N and N/P ratios, and δ 15N values of “penguin-impacted” microbial mats were significantly higher than values obtained for “macrofauna-free” sample. Nutrients derived from penguin colonies and other marine vertebrates altered the trophic interactions of communities within microbial mats, as well as the relative abundance and trophic position of meiofaunal groups. Twentynine bacterial families from eight different phyla significantly changed with the presence of penguins, with inorganic nitrogen (NH4 + and NO3 −) and δ 15N appearing as key factors in driving bacterial community composition. An apparent change in richness, diversity, and dominance of prokaryotes was also related to penguin-derived nutrients, affecting N utilization strategies of microbial mats and relating oligotrophic systems to communities with a higher metabolic versatility. The interdisciplinary approach of this study makes these results advance our understanding of interactions and composition of communities inhabiting microbial mats from Antarctica, revealing how they are deeply associated with marine animals Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Universidad Autónoma de Madrid (UAM): Biblos-e Archivo Antarctic Antarctic Peninsula The Antarctic Frontiers in Microbiology 13 |
institution |
Open Polar |
collection |
Universidad Autónoma de Madrid (UAM): Biblos-e Archivo |
op_collection_id |
ftuamadrid |
language |
English |
topic |
penguins nitrogen phosphorus microbial mat trophic relationships bacterial community Antarctica Biología y Biomedicina / Biología |
spellingShingle |
penguins nitrogen phosphorus microbial mat trophic relationships bacterial community Antarctica Biología y Biomedicina / Biología Almela Gómez, Pablo Velázquez, David Rico Eguizabal, Eugenio Justel Eusebio, Ana María Quesada del Corral, Antonio Marine vertebrates impact the bacterial community composition and food webs of Antarctic microbial mats |
topic_facet |
penguins nitrogen phosphorus microbial mat trophic relationships bacterial community Antarctica Biología y Biomedicina / Biología |
description |
The biological activity of marine vertebrates represents an input of nutrients for Antarctic terrestrial biota, with relevant consequences for the entire ecosystem. Even though microbial mats assemble most of the biological diversity of the non-marine Antarctica, the effects of the local macrofauna on these microecosystems remain understudied. Using 16S rRNA gene sequencing, 13C and 15N stable isotopes, and by characterizing the P and N-derived nutrient levels, we evaluated the effects of penguins and other marine vertebrates on four microbial mats located along the Antarctic Peninsula. Our results show that P concentrations, C/N and N/P ratios, and δ 15N values of “penguin-impacted” microbial mats were significantly higher than values obtained for “macrofauna-free” sample. Nutrients derived from penguin colonies and other marine vertebrates altered the trophic interactions of communities within microbial mats, as well as the relative abundance and trophic position of meiofaunal groups. Twentynine bacterial families from eight different phyla significantly changed with the presence of penguins, with inorganic nitrogen (NH4 + and NO3 −) and δ 15N appearing as key factors in driving bacterial community composition. An apparent change in richness, diversity, and dominance of prokaryotes was also related to penguin-derived nutrients, affecting N utilization strategies of microbial mats and relating oligotrophic systems to communities with a higher metabolic versatility. The interdisciplinary approach of this study makes these results advance our understanding of interactions and composition of communities inhabiting microbial mats from Antarctica, revealing how they are deeply associated with marine animals |
author2 |
UAM. Departamento de Biología UAM. Departamento de Ecología |
format |
Article in Journal/Newspaper |
author |
Almela Gómez, Pablo Velázquez, David Rico Eguizabal, Eugenio Justel Eusebio, Ana María Quesada del Corral, Antonio |
author_facet |
Almela Gómez, Pablo Velázquez, David Rico Eguizabal, Eugenio Justel Eusebio, Ana María Quesada del Corral, Antonio |
author_sort |
Almela Gómez, Pablo |
title |
Marine vertebrates impact the bacterial community composition and food webs of Antarctic microbial mats |
title_short |
Marine vertebrates impact the bacterial community composition and food webs of Antarctic microbial mats |
title_full |
Marine vertebrates impact the bacterial community composition and food webs of Antarctic microbial mats |
title_fullStr |
Marine vertebrates impact the bacterial community composition and food webs of Antarctic microbial mats |
title_full_unstemmed |
Marine vertebrates impact the bacterial community composition and food webs of Antarctic microbial mats |
title_sort |
marine vertebrates impact the bacterial community composition and food webs of antarctic microbial mats |
publisher |
Frontiers |
publishDate |
2022 |
url |
http://hdl.handle.net/10486/705783 https://doi.org/10.3389/fmicb.2022.841175 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_relation |
Frontiers in Microbiology https://www.frontiersin.org/articles/10.3389/fmicb.2022.841175/full Gobierno de España. PID2020-116520RB-I00 Gobierno de España. CTM2016-79741-R Gobierno de España. PCIN-2016-001 Frontiers in Microbiology 13 (2022): 8841175 1664302X http://hdl.handle.net/10486/705783 doi:10.3389/fmicb.2022.841175 8841175-1 8841175-16 13 |
op_rights |
Copyright © 2022 Almela, Velázquez, Rico, Justel and Quesada Reconocimiento openAccess |
op_doi |
https://doi.org/10.3389/fmicb.2022.841175 |
container_title |
Frontiers in Microbiology |
container_volume |
13 |
_version_ |
1766017636272963584 |