Comparison of Diatom Paleo-Assemblages with Adjacent Limno-Terrestrial Communities on Vega Island, Antarctic Peninsula
Diatoms are useful ecological and paleolimnological indicators routinely used to reconstruct past conditions and monitor environmental change. Despite this, diatom assemblages from lake sediment cores are often difficult to interpret due to a limited knowledge of the ecology of some species, some of...
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ftdoajarticles:oai:doaj.org/article:3b3039be53994f1fb6e350a493cc6812 2023-05-15T13:33:28+02:00 Comparison of Diatom Paleo-Assemblages with Adjacent Limno-Terrestrial Communities on Vega Island, Antarctic Peninsula Marie Bulínová Tyler J. Kohler Jan Kavan Bart Van de Vijver Daniel Nývlt Linda Nedbalová Silvia H. Coria Juan M. Lirio Kateřina Kopalová 2020-05-01T00:00:00Z https://doi.org/10.3390/w12051340 https://doaj.org/article/3b3039be53994f1fb6e350a493cc6812 EN eng MDPI AG https://www.mdpi.com/2073-4441/12/5/1340 https://doaj.org/toc/2073-4441 doi:10.3390/w12051340 2073-4441 https://doaj.org/article/3b3039be53994f1fb6e350a493cc6812 Water, Vol 12, Iss 1340, p 1340 (2020) limnology biogeography streams mosses community ecology Maritime Antarctic Region Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 article 2020 ftdoajarticles https://doi.org/10.3390/w12051340 2022-12-31T01:31:56Z Diatoms are useful ecological and paleolimnological indicators routinely used to reconstruct past conditions and monitor environmental change. Despite this, diatom assemblages from lake sediment cores are often difficult to interpret due to a limited knowledge of the ecology of some species, some of which may originate from the adjacent limno-terrestrial landscape. Here, we compare diatom assemblages from two recently published Antarctic lake sediment cores collected from the northeast and southwest sides of Vega Island, Antarctic Peninsula. We further compare the sediment core assemblages with adjacent modern communities inhabiting four different limno-terrestrial habitat types to gauge the importance of landscape connectivity in determining paleo-assemblage structure. We found that diatom assemblage composition was significantly different between the two cores, and our survey of modern habitats further revealed habitat type to be an important factor determining the composition of limno-terrestrial samples. Differences in modern habitats were driven primarily by Chamaepinnularia krookiformis in mosses, Nitzschia paleacea in ponds, and Fistulifera pelliculosa in streams. When modern communities were compared with paleo-assemblages through ordination, the cored lake from the northeast side, which exhibited greater hydrological connectivity with its surroundings, clustered more closely with the adjacent modern samples. Meanwhile, the cored lake from the southwest side, which was more hydrologically isolated, formed a distinct cluster separate from the others. Overall, species richness and diversity were greater on the southwest side of the island than the northeast, and the known distributions of diatom taxa supported the notion that Vega Island was a transitional zone between the Maritime and Continental Antarctic bioregions. These results collectively suggested that while environmental and spatial controls may be influential in determining diatom community composition, the unique hydrogeological setting of ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Vega Island Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Vega Island ENVELOPE(-57.500,-57.500,-63.833,-63.833) Water 12 5 1340 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
limnology biogeography streams mosses community ecology Maritime Antarctic Region Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
spellingShingle |
limnology biogeography streams mosses community ecology Maritime Antarctic Region Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Marie Bulínová Tyler J. Kohler Jan Kavan Bart Van de Vijver Daniel Nývlt Linda Nedbalová Silvia H. Coria Juan M. Lirio Kateřina Kopalová Comparison of Diatom Paleo-Assemblages with Adjacent Limno-Terrestrial Communities on Vega Island, Antarctic Peninsula |
topic_facet |
limnology biogeography streams mosses community ecology Maritime Antarctic Region Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
description |
Diatoms are useful ecological and paleolimnological indicators routinely used to reconstruct past conditions and monitor environmental change. Despite this, diatom assemblages from lake sediment cores are often difficult to interpret due to a limited knowledge of the ecology of some species, some of which may originate from the adjacent limno-terrestrial landscape. Here, we compare diatom assemblages from two recently published Antarctic lake sediment cores collected from the northeast and southwest sides of Vega Island, Antarctic Peninsula. We further compare the sediment core assemblages with adjacent modern communities inhabiting four different limno-terrestrial habitat types to gauge the importance of landscape connectivity in determining paleo-assemblage structure. We found that diatom assemblage composition was significantly different between the two cores, and our survey of modern habitats further revealed habitat type to be an important factor determining the composition of limno-terrestrial samples. Differences in modern habitats were driven primarily by Chamaepinnularia krookiformis in mosses, Nitzschia paleacea in ponds, and Fistulifera pelliculosa in streams. When modern communities were compared with paleo-assemblages through ordination, the cored lake from the northeast side, which exhibited greater hydrological connectivity with its surroundings, clustered more closely with the adjacent modern samples. Meanwhile, the cored lake from the southwest side, which was more hydrologically isolated, formed a distinct cluster separate from the others. Overall, species richness and diversity were greater on the southwest side of the island than the northeast, and the known distributions of diatom taxa supported the notion that Vega Island was a transitional zone between the Maritime and Continental Antarctic bioregions. These results collectively suggested that while environmental and spatial controls may be influential in determining diatom community composition, the unique hydrogeological setting of ... |
format |
Article in Journal/Newspaper |
author |
Marie Bulínová Tyler J. Kohler Jan Kavan Bart Van de Vijver Daniel Nývlt Linda Nedbalová Silvia H. Coria Juan M. Lirio Kateřina Kopalová |
author_facet |
Marie Bulínová Tyler J. Kohler Jan Kavan Bart Van de Vijver Daniel Nývlt Linda Nedbalová Silvia H. Coria Juan M. Lirio Kateřina Kopalová |
author_sort |
Marie Bulínová |
title |
Comparison of Diatom Paleo-Assemblages with Adjacent Limno-Terrestrial Communities on Vega Island, Antarctic Peninsula |
title_short |
Comparison of Diatom Paleo-Assemblages with Adjacent Limno-Terrestrial Communities on Vega Island, Antarctic Peninsula |
title_full |
Comparison of Diatom Paleo-Assemblages with Adjacent Limno-Terrestrial Communities on Vega Island, Antarctic Peninsula |
title_fullStr |
Comparison of Diatom Paleo-Assemblages with Adjacent Limno-Terrestrial Communities on Vega Island, Antarctic Peninsula |
title_full_unstemmed |
Comparison of Diatom Paleo-Assemblages with Adjacent Limno-Terrestrial Communities on Vega Island, Antarctic Peninsula |
title_sort |
comparison of diatom paleo-assemblages with adjacent limno-terrestrial communities on vega island, antarctic peninsula |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/w12051340 https://doaj.org/article/3b3039be53994f1fb6e350a493cc6812 |
long_lat |
ENVELOPE(-57.500,-57.500,-63.833,-63.833) |
geographic |
Antarctic Antarctic Peninsula Vega Island |
geographic_facet |
Antarctic Antarctic Peninsula Vega Island |
genre |
Antarc* Antarctic Antarctic Peninsula Vega Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Vega Island |
op_source |
Water, Vol 12, Iss 1340, p 1340 (2020) |
op_relation |
https://www.mdpi.com/2073-4441/12/5/1340 https://doaj.org/toc/2073-4441 doi:10.3390/w12051340 2073-4441 https://doaj.org/article/3b3039be53994f1fb6e350a493cc6812 |
op_doi |
https://doi.org/10.3390/w12051340 |
container_title |
Water |
container_volume |
12 |
container_issue |
5 |
container_start_page |
1340 |
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1766042471229292544 |