Trends in Ostracoda and Cladocera distribution and water chemistry in subarctic Canada: Churchill (Manitoba) lakes and ponds revisited
Ponds and lakes distributed across northern treeline in the Hudson Bay Lowlands near Churchill (Manitoba) were revisited to analyse and document the local ecoclimatic and limnological changes that occurred over the period 1997-2012. Our analyses revealed that single events may cause significant chan...
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ftdoajarticles:oai:doaj.org/article:025b4cc6a255454984ad3b6011b84c48 2023-05-15T15:08:56+02:00 Trends in Ostracoda and Cladocera distribution and water chemistry in subarctic Canada: Churchill (Manitoba) lakes and ponds revisited Finn A. Viehberg Reinhard Pienitz 2017-03-01T00:00:00Z https://doi.org/10.4081/jlimnol.2017.1578 https://doaj.org/article/025b4cc6a255454984ad3b6011b84c48 EN eng PAGEPress Publications http://www.jlimnol.it/index.php/jlimnol/article/view/1578 https://doaj.org/toc/1129-5767 https://doaj.org/toc/1723-8633 1129-5767 1723-8633 doi:10.4081/jlimnol.2017.1578 https://doaj.org/article/025b4cc6a255454984ad3b6011b84c48 Journal of Limnology, Vol 76, Iss 3 (2017) Freshwater Ostracodes Cladocerans Hudson Bay Lowlands subarctic climate change biodiversity Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 article 2017 ftdoajarticles https://doi.org/10.4081/jlimnol.2017.1578 2022-12-31T02:42:58Z Ponds and lakes distributed across northern treeline in the Hudson Bay Lowlands near Churchill (Manitoba) were revisited to analyse and document the local ecoclimatic and limnological changes that occurred over the period 1997-2012. Our analyses revealed that single events may cause significant changes in salinity, pH and silicate content because of the limited buffer capacity of the inter-connected waters. Planktic freshwater microcrustaceans (Cladocera) presented less diverse assemblages and appeared to favour waters that are situated in the boreal forest, while the diversity of benthic species assemblages (Cladocera and Ostracoda) was highest in waters located closer to the coastline and in open tundra vegetation. We identified three species that are distinctive for the boreal ecozone (i.e., Candona acuta , Can. acutula and Can. decora ) and two species (i.e., Tonnacypris glacialis and Can. rawsoni ) that are elements of (sub-)arctic landscapes and potentially endangered as the northern treeline expands due to rapid warming. These species are thought to be useful indicators for future ecosystem quality assessments and/or ecosystem service management programs. Our findings were compared to other studies completed in the boreal Yukon Territory and revealed that species diversity is closely linked to landscape history. Article in Journal/Newspaper Arctic Churchill Climate change Hudson Bay Subarctic Tundra Yukon Directory of Open Access Journals: DOAJ Articles Arctic Canada Hudson Hudson Bay Yukon Journal of Limnology |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Freshwater Ostracodes Cladocerans Hudson Bay Lowlands subarctic climate change biodiversity Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 |
spellingShingle |
Freshwater Ostracodes Cladocerans Hudson Bay Lowlands subarctic climate change biodiversity Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 Finn A. Viehberg Reinhard Pienitz Trends in Ostracoda and Cladocera distribution and water chemistry in subarctic Canada: Churchill (Manitoba) lakes and ponds revisited |
topic_facet |
Freshwater Ostracodes Cladocerans Hudson Bay Lowlands subarctic climate change biodiversity Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 |
description |
Ponds and lakes distributed across northern treeline in the Hudson Bay Lowlands near Churchill (Manitoba) were revisited to analyse and document the local ecoclimatic and limnological changes that occurred over the period 1997-2012. Our analyses revealed that single events may cause significant changes in salinity, pH and silicate content because of the limited buffer capacity of the inter-connected waters. Planktic freshwater microcrustaceans (Cladocera) presented less diverse assemblages and appeared to favour waters that are situated in the boreal forest, while the diversity of benthic species assemblages (Cladocera and Ostracoda) was highest in waters located closer to the coastline and in open tundra vegetation. We identified three species that are distinctive for the boreal ecozone (i.e., Candona acuta , Can. acutula and Can. decora ) and two species (i.e., Tonnacypris glacialis and Can. rawsoni ) that are elements of (sub-)arctic landscapes and potentially endangered as the northern treeline expands due to rapid warming. These species are thought to be useful indicators for future ecosystem quality assessments and/or ecosystem service management programs. Our findings were compared to other studies completed in the boreal Yukon Territory and revealed that species diversity is closely linked to landscape history. |
format |
Article in Journal/Newspaper |
author |
Finn A. Viehberg Reinhard Pienitz |
author_facet |
Finn A. Viehberg Reinhard Pienitz |
author_sort |
Finn A. Viehberg |
title |
Trends in Ostracoda and Cladocera distribution and water chemistry in subarctic Canada: Churchill (Manitoba) lakes and ponds revisited |
title_short |
Trends in Ostracoda and Cladocera distribution and water chemistry in subarctic Canada: Churchill (Manitoba) lakes and ponds revisited |
title_full |
Trends in Ostracoda and Cladocera distribution and water chemistry in subarctic Canada: Churchill (Manitoba) lakes and ponds revisited |
title_fullStr |
Trends in Ostracoda and Cladocera distribution and water chemistry in subarctic Canada: Churchill (Manitoba) lakes and ponds revisited |
title_full_unstemmed |
Trends in Ostracoda and Cladocera distribution and water chemistry in subarctic Canada: Churchill (Manitoba) lakes and ponds revisited |
title_sort |
trends in ostracoda and cladocera distribution and water chemistry in subarctic canada: churchill (manitoba) lakes and ponds revisited |
publisher |
PAGEPress Publications |
publishDate |
2017 |
url |
https://doi.org/10.4081/jlimnol.2017.1578 https://doaj.org/article/025b4cc6a255454984ad3b6011b84c48 |
geographic |
Arctic Canada Hudson Hudson Bay Yukon |
geographic_facet |
Arctic Canada Hudson Hudson Bay Yukon |
genre |
Arctic Churchill Climate change Hudson Bay Subarctic Tundra Yukon |
genre_facet |
Arctic Churchill Climate change Hudson Bay Subarctic Tundra Yukon |
op_source |
Journal of Limnology, Vol 76, Iss 3 (2017) |
op_relation |
http://www.jlimnol.it/index.php/jlimnol/article/view/1578 https://doaj.org/toc/1129-5767 https://doaj.org/toc/1723-8633 1129-5767 1723-8633 doi:10.4081/jlimnol.2017.1578 https://doaj.org/article/025b4cc6a255454984ad3b6011b84c48 |
op_doi |
https://doi.org/10.4081/jlimnol.2017.1578 |
container_title |
Journal of Limnology |
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1766340195879223296 |