Seabirds modify trophic groups, while altitude promotes xeric-tolerant species of Tardigrada in the high Arctic tundra (Svalbard archipelago)
In the Arctic, especially in the coastal mountainous areas, gradual changes in elevation above sea level and allochthonous nutrients delivered by seabirds modify environmental conditions. Increasing elevation affects temperature whereas allochthonous nutrients delivered by seabirds to the terrestria...
Published in: | Acta Oecologica |
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2019
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Online Access: | http://hdl.handle.net/10261/247979 https://doi.org/10.1016/j.actao.2019.05.007 https://doi.org/10.13039/501100003329 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100003339 |
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ftcsic:oai:digital.csic.es:10261/247979 2024-02-11T10:00:40+01:00 Seabirds modify trophic groups, while altitude promotes xeric-tolerant species of Tardigrada in the high Arctic tundra (Svalbard archipelago) Zawierucha, Krzysztof Zmudczynska-Skarbek, Katarzyna Guil, Noemí Bogdziewicz, Michal Ministerio de Economía y Competitividad (España) Ministerio de Ciencia e Innovación (España) Consejo Superior de Investigaciones Científicas (España) 2019-07 http://hdl.handle.net/10261/247979 https://doi.org/10.1016/j.actao.2019.05.007 https://doi.org/10.13039/501100003329 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100003339 unknown Elsevier #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ CGL2016-80577-P info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-108649GB-I00 http://dx.doi.org/10.1016/j.actao.2019.05.007 Sí doi:10.1016/j.actao.2019.05.007 issn: 1146-609X Acta Oecologica 98: 50-58 (2019) http://hdl.handle.net/10261/247979 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100003339 none Microbivores Herbivores Polar and alpine regions Tardigrades Trophic networks Tundra artículo http://purl.org/coar/resource_type/c_6501 2019 ftcsic https://doi.org/10.1016/j.actao.2019.05.00710.13039/50110000332910.13039/50110000483710.13039/501100003339 2024-01-16T11:12:14Z In the Arctic, especially in the coastal mountainous areas, gradual changes in elevation above sea level and allochthonous nutrients delivered by seabirds modify environmental conditions. Increasing elevation affects temperature whereas allochthonous nutrients delivered by seabirds to the terrestrial ecosystem remarkably influence primary production and diversity of organisms. Knowing the abundance of ubiquitous tardigrades (a microinvertebrate phylum), their multitrophic level function and their trophic composition might be essential for understanding ecosystem functioning and matter flow in fragile polar ecosystems. In this study, we tested the effects of altitude and seabird guano on modifying trophic diversity of tardigrades. We found that the tardigrades in Hornsund were herbivorous and microbivorous species dominated. Microbivores were significantly more abundant in guano-supplied than in control areas, which may be explained by the presence of higher nutrient and organic matter content in comparison with areas not fertilised by birds. We observed no significant relationship between the abundance of tardigrade trophic groups and altitude. However, the abundance of xeric-tolerant herbivorous terrestrial tardigrades representing the class Heterotardigrada increased with altitude. Strongly hygrophilic conditions (ponds, swamps, streams) at lower elevations as well as acidic conditions formed by seabird guano may reduce the abundance of heterotardigrades. Our study shows that seabirds rather than the effect of altitude or the generally predicted increasing temperatures in the Arctic, are affecting high Arctic tundra limno-terrestrial invertebrate trophic groups proportion. Our results provide baseline data for future studies of the Hornsund region, since climate change scenarios predict decreased guano delivery by seabirds on mountain slopes, shifts in plant species dominance and more intense fertilisation of lakes by geese, all of which may alter invertebrate trophic composition in southern Svalbard. This ... Article in Journal/Newspaper Arctic Climate change Hornsund Svalbard Tundra Tardigrade Digital.CSIC (Spanish National Research Council) Arctic Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Svalbard Svalbard Archipelago Acta Oecologica 98 50 58 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Microbivores Herbivores Polar and alpine regions Tardigrades Trophic networks Tundra |
spellingShingle |
Microbivores Herbivores Polar and alpine regions Tardigrades Trophic networks Tundra Zawierucha, Krzysztof Zmudczynska-Skarbek, Katarzyna Guil, Noemí Bogdziewicz, Michal Seabirds modify trophic groups, while altitude promotes xeric-tolerant species of Tardigrada in the high Arctic tundra (Svalbard archipelago) |
topic_facet |
Microbivores Herbivores Polar and alpine regions Tardigrades Trophic networks Tundra |
description |
In the Arctic, especially in the coastal mountainous areas, gradual changes in elevation above sea level and allochthonous nutrients delivered by seabirds modify environmental conditions. Increasing elevation affects temperature whereas allochthonous nutrients delivered by seabirds to the terrestrial ecosystem remarkably influence primary production and diversity of organisms. Knowing the abundance of ubiquitous tardigrades (a microinvertebrate phylum), their multitrophic level function and their trophic composition might be essential for understanding ecosystem functioning and matter flow in fragile polar ecosystems. In this study, we tested the effects of altitude and seabird guano on modifying trophic diversity of tardigrades. We found that the tardigrades in Hornsund were herbivorous and microbivorous species dominated. Microbivores were significantly more abundant in guano-supplied than in control areas, which may be explained by the presence of higher nutrient and organic matter content in comparison with areas not fertilised by birds. We observed no significant relationship between the abundance of tardigrade trophic groups and altitude. However, the abundance of xeric-tolerant herbivorous terrestrial tardigrades representing the class Heterotardigrada increased with altitude. Strongly hygrophilic conditions (ponds, swamps, streams) at lower elevations as well as acidic conditions formed by seabird guano may reduce the abundance of heterotardigrades. Our study shows that seabirds rather than the effect of altitude or the generally predicted increasing temperatures in the Arctic, are affecting high Arctic tundra limno-terrestrial invertebrate trophic groups proportion. Our results provide baseline data for future studies of the Hornsund region, since climate change scenarios predict decreased guano delivery by seabirds on mountain slopes, shifts in plant species dominance and more intense fertilisation of lakes by geese, all of which may alter invertebrate trophic composition in southern Svalbard. This ... |
author2 |
Ministerio de Economía y Competitividad (España) Ministerio de Ciencia e Innovación (España) Consejo Superior de Investigaciones Científicas (España) |
format |
Article in Journal/Newspaper |
author |
Zawierucha, Krzysztof Zmudczynska-Skarbek, Katarzyna Guil, Noemí Bogdziewicz, Michal |
author_facet |
Zawierucha, Krzysztof Zmudczynska-Skarbek, Katarzyna Guil, Noemí Bogdziewicz, Michal |
author_sort |
Zawierucha, Krzysztof |
title |
Seabirds modify trophic groups, while altitude promotes xeric-tolerant species of Tardigrada in the high Arctic tundra (Svalbard archipelago) |
title_short |
Seabirds modify trophic groups, while altitude promotes xeric-tolerant species of Tardigrada in the high Arctic tundra (Svalbard archipelago) |
title_full |
Seabirds modify trophic groups, while altitude promotes xeric-tolerant species of Tardigrada in the high Arctic tundra (Svalbard archipelago) |
title_fullStr |
Seabirds modify trophic groups, while altitude promotes xeric-tolerant species of Tardigrada in the high Arctic tundra (Svalbard archipelago) |
title_full_unstemmed |
Seabirds modify trophic groups, while altitude promotes xeric-tolerant species of Tardigrada in the high Arctic tundra (Svalbard archipelago) |
title_sort |
seabirds modify trophic groups, while altitude promotes xeric-tolerant species of tardigrada in the high arctic tundra (svalbard archipelago) |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://hdl.handle.net/10261/247979 https://doi.org/10.1016/j.actao.2019.05.007 https://doi.org/10.13039/501100003329 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100003339 |
long_lat |
ENVELOPE(141.604,141.604,-66.775,-66.775) ENVELOPE(15.865,15.865,76.979,76.979) |
geographic |
Arctic Guano Hornsund Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Guano Hornsund Svalbard Svalbard Archipelago |
genre |
Arctic Climate change Hornsund Svalbard Tundra Tardigrade |
genre_facet |
Arctic Climate change Hornsund Svalbard Tundra Tardigrade |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ CGL2016-80577-P info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-108649GB-I00 http://dx.doi.org/10.1016/j.actao.2019.05.007 Sí doi:10.1016/j.actao.2019.05.007 issn: 1146-609X Acta Oecologica 98: 50-58 (2019) http://hdl.handle.net/10261/247979 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100003339 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.actao.2019.05.00710.13039/50110000332910.13039/50110000483710.13039/501100003339 |
container_title |
Acta Oecologica |
container_volume |
98 |
container_start_page |
50 |
op_container_end_page |
58 |
_version_ |
1790596380421521408 |