The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment
Subarctic ecosystems represent a vulnerable environment for their biota and studying their habitats provides a better understanding of ongoing and accelerated environmental change. Literature suggests that habitat and environmental variables such as water chemistry jointly influence benthic algal sp...
Main Authors: | , , , |
---|---|
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
BIOPRESS LTD
2024
|
Subjects: | |
Online Access: | http://hdl.handle.net/10138/584751 |
id |
ftunivhelsihelda:oai:helda.helsinki.fi:10138/584751 |
---|---|
record_format |
openpolar |
spelling |
ftunivhelsihelda:oai:helda.helsinki.fi:10138/584751 2024-09-15T18:05:59+00:00 The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment Granqvist, Sonja Karoliina Josefiina Heikkinen, Janne Laksela, Paula Soininen, Janne Ecosystems and Environment Research Programme Department of Geosciences and Geography Helsinki Institute of Sustainability Science (HELSUS) 2024-08-19T13:10:03Z 14 application/pdf http://hdl.handle.net/10138/584751 eng eng BIOPRESS LTD 10.1080/0269249X.2024.2369048 This work was supported by the Kone Foundation, Societas pro Fauna et Flora Fennica and the University of Helsinki. We would like to thank Professor Miska Luoto and PhD Anette Teittinen for their support in statistical analyses. This is contribution 013 from the Environmental and Mineralogical Laboratories (Hellabs) of the Department of Geosciences and Geography, University of Helsinki. Granqvist , S K J , Heikkinen , J , Laksela , P & Soininen , J 2024 , ' The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment ' , Diatom Research , vol. 39 , no. 1 , pp. 13-26 . https://doi.org/10.1080/0269249X.2024.2369048 ORCID: /0009-0007-8891-3072/work/166162077 ORCID: /0000-0002-1893-6005/work/166163555 ORCID: /0000-0002-8583-3137/work/166166894 http://hdl.handle.net/10138/584751 1a6b774a-3dea-47cf-956d-63779ce1e541 85198043119 cc_by info:eu-repo/semantics/openAccess openAccess Environmental sciences Article publishedVersion 2024 ftunivhelsihelda 2024-08-28T23:57:17Z Subarctic ecosystems represent a vulnerable environment for their biota and studying their habitats provides a better understanding of ongoing and accelerated environmental change. Literature suggests that habitat and environmental variables such as water chemistry jointly influence benthic algal species richness and assemblage composition. However, the combined effects of habitat and water chemistry on benthic algal communities are poorly understood especially in subarctic freshwaters. This study compared benthic diatom assemblages on rocks and on sediment and examined if environmental variables affect diatoms similarly in these habitats. A total of 20 subarctic ponds were sampled for diatoms on sediment and rock in summer 2022 in northern Fennoscandia. Differences in species richness and Pielou evenness between habitats were analysed by a paired Wilcoxon signed-rank test. The most significant environmental variables influencing diatom species richness were determined by generalized linear models. Differences in diatom assemblage compositions were analysed using non-metric multidimensional scaling, analysis of similarities, and Jaccard similarity index. Finally, to study how environmental variables shape diatom compositions on rock and sediment, a redundancy analysis was performed. According to our results species richness and evenness were significantly higher on sediment than on rock, and water pH was the major determinant for diatom richness in both habitats. Diatom assemblage composition did not differ between rocks and sediment, and composition was shaped by the same environmental variables such as pond surface area and water pH in both habitats. Our results support the prevailing conception that sediment habitat contains higher diatom species richness than rocks, while assemblage composition does not differ between these habitats. This study highlights the role of water pH on benthic diatoms regardless of their habitat. Given that global warming is expected to affect water pH levels, such a change will ... Article in Journal/Newspaper Fennoscandia Subarctic HELDA – University of Helsinki Open Repository |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
Environmental sciences |
spellingShingle |
Environmental sciences Granqvist, Sonja Karoliina Josefiina Heikkinen, Janne Laksela, Paula Soininen, Janne The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment |
topic_facet |
Environmental sciences |
description |
Subarctic ecosystems represent a vulnerable environment for their biota and studying their habitats provides a better understanding of ongoing and accelerated environmental change. Literature suggests that habitat and environmental variables such as water chemistry jointly influence benthic algal species richness and assemblage composition. However, the combined effects of habitat and water chemistry on benthic algal communities are poorly understood especially in subarctic freshwaters. This study compared benthic diatom assemblages on rocks and on sediment and examined if environmental variables affect diatoms similarly in these habitats. A total of 20 subarctic ponds were sampled for diatoms on sediment and rock in summer 2022 in northern Fennoscandia. Differences in species richness and Pielou evenness between habitats were analysed by a paired Wilcoxon signed-rank test. The most significant environmental variables influencing diatom species richness were determined by generalized linear models. Differences in diatom assemblage compositions were analysed using non-metric multidimensional scaling, analysis of similarities, and Jaccard similarity index. Finally, to study how environmental variables shape diatom compositions on rock and sediment, a redundancy analysis was performed. According to our results species richness and evenness were significantly higher on sediment than on rock, and water pH was the major determinant for diatom richness in both habitats. Diatom assemblage composition did not differ between rocks and sediment, and composition was shaped by the same environmental variables such as pond surface area and water pH in both habitats. Our results support the prevailing conception that sediment habitat contains higher diatom species richness than rocks, while assemblage composition does not differ between these habitats. This study highlights the role of water pH on benthic diatoms regardless of their habitat. Given that global warming is expected to affect water pH levels, such a change will ... |
author2 |
Ecosystems and Environment Research Programme Department of Geosciences and Geography Helsinki Institute of Sustainability Science (HELSUS) |
format |
Article in Journal/Newspaper |
author |
Granqvist, Sonja Karoliina Josefiina Heikkinen, Janne Laksela, Paula Soininen, Janne |
author_facet |
Granqvist, Sonja Karoliina Josefiina Heikkinen, Janne Laksela, Paula Soininen, Janne |
author_sort |
Granqvist, Sonja Karoliina Josefiina |
title |
The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment |
title_short |
The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment |
title_full |
The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment |
title_fullStr |
The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment |
title_full_unstemmed |
The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment |
title_sort |
effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment |
publisher |
BIOPRESS LTD |
publishDate |
2024 |
url |
http://hdl.handle.net/10138/584751 |
genre |
Fennoscandia Subarctic |
genre_facet |
Fennoscandia Subarctic |
op_relation |
10.1080/0269249X.2024.2369048 This work was supported by the Kone Foundation, Societas pro Fauna et Flora Fennica and the University of Helsinki. We would like to thank Professor Miska Luoto and PhD Anette Teittinen for their support in statistical analyses. This is contribution 013 from the Environmental and Mineralogical Laboratories (Hellabs) of the Department of Geosciences and Geography, University of Helsinki. Granqvist , S K J , Heikkinen , J , Laksela , P & Soininen , J 2024 , ' The effect of habitat on benthic diatoms in subarctic ponds–differences between rock and sediment ' , Diatom Research , vol. 39 , no. 1 , pp. 13-26 . https://doi.org/10.1080/0269249X.2024.2369048 ORCID: /0009-0007-8891-3072/work/166162077 ORCID: /0000-0002-1893-6005/work/166163555 ORCID: /0000-0002-8583-3137/work/166166894 http://hdl.handle.net/10138/584751 1a6b774a-3dea-47cf-956d-63779ce1e541 85198043119 |
op_rights |
cc_by info:eu-repo/semantics/openAccess openAccess |
_version_ |
1810443496316731392 |