Climatic effects on a cold stenotherm species Lepidurus arcticus (Branchiopoda, Notostraca) on the southern outreach of its distribution range
On the Norwegian mainland, the Arctic tadpole shrimp Lepidurus arcticus is a typically alpine species mainly co-occurring with fish. The Hardangervidda mountain plateau is the main area of the southernmost L. arcticus populations. Here L. arcticus is widely distributed, especially in the central and...
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Norwegian University of Science and Technology
2018
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ftdoajarticles:oai:doaj.org/article:1286944122d4425c9a06f8711e3511dd 2023-05-15T15:15:50+02:00 Climatic effects on a cold stenotherm species Lepidurus arcticus (Branchiopoda, Notostraca) on the southern outreach of its distribution range Tore Qvenild Eirik Fjeld Arne Fjellheim Sigurd Rognerud Åsmund Tysse 2018-12-01T00:00:00Z https://doi.org/10.5324/fn.v38i0.2598 https://doaj.org/article/1286944122d4425c9a06f8711e3511dd EN eng Norwegian University of Science and Technology https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/2598 https://doaj.org/toc/1502-4873 https://doaj.org/toc/1891-5396 doi:10.5324/fn.v38i0.2598 1502-4873 1891-5396 https://doaj.org/article/1286944122d4425c9a06f8711e3511dd Fauna Norvegica, Vol 38 (2018) Crustacea Branchiopoda climate change distribution Zoology QL1-991 article 2018 ftdoajarticles https://doi.org/10.5324/fn.v38i0.2598 2022-12-30T22:14:28Z On the Norwegian mainland, the Arctic tadpole shrimp Lepidurus arcticus is a typically alpine species mainly co-occurring with fish. The Hardangervidda mountain plateau is the main area of the southernmost L. arcticus populations. Here L. arcticus is widely distributed, especially in the central and eastern parts of the plateau. Lepidurus arcticus has a univoltine life cycle emerging from resting eggs at ice break-up and fulfil development during the short mountain summer, before they reproduce and die. The main goal in this study was to investigate the thermal thresholds for L. arcticus. Timing of ice break-up and the proceeding water temperature are hypothesized to constitute the primary drivers of L. arcticus's development and growth. Stomach analyses of brown trout is the most sensitive method for sampling L. arcticus, especially at low densities. Analyses of 4 460 brown trout stomachs revealed that at least 400 degree-days are needed for development and growth from hatching in to adults. It is a significant gradient in climatic conditions on Hardangervidda with a coastal impact in the western part of the plateau with a three - to fourfold winter deposition compared to a dryer inland region in the east. The snow deposits have increased since the 1980s and snow rich winters have been more frequent. An additional increase is projected. This may give lower water temperature and shorter ice-free seasons. Thus, the cold western lakes could be even more hostile habitats for L. arcticus. During the same period, an abrupt increase in spring-summer temperatures was detected. This has improved the conditions for L. arcticus in many lakes. However, as a cold stenotherm species a further increase in temperature may be detrimental. Especially in shallow lakes in the central and eastern parts this may be a problem even without reaching critical levels by inducing life cycle mismatches. Article in Journal/Newspaper Arctic Climate change Directory of Open Access Journals: DOAJ Articles Arctic Tadpole ENVELOPE(-65.317,-65.317,-65.933,-65.933) Fauna norvegica 38 37 53 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Crustacea Branchiopoda climate change distribution Zoology QL1-991 |
spellingShingle |
Crustacea Branchiopoda climate change distribution Zoology QL1-991 Tore Qvenild Eirik Fjeld Arne Fjellheim Sigurd Rognerud Åsmund Tysse Climatic effects on a cold stenotherm species Lepidurus arcticus (Branchiopoda, Notostraca) on the southern outreach of its distribution range |
topic_facet |
Crustacea Branchiopoda climate change distribution Zoology QL1-991 |
description |
On the Norwegian mainland, the Arctic tadpole shrimp Lepidurus arcticus is a typically alpine species mainly co-occurring with fish. The Hardangervidda mountain plateau is the main area of the southernmost L. arcticus populations. Here L. arcticus is widely distributed, especially in the central and eastern parts of the plateau. Lepidurus arcticus has a univoltine life cycle emerging from resting eggs at ice break-up and fulfil development during the short mountain summer, before they reproduce and die. The main goal in this study was to investigate the thermal thresholds for L. arcticus. Timing of ice break-up and the proceeding water temperature are hypothesized to constitute the primary drivers of L. arcticus's development and growth. Stomach analyses of brown trout is the most sensitive method for sampling L. arcticus, especially at low densities. Analyses of 4 460 brown trout stomachs revealed that at least 400 degree-days are needed for development and growth from hatching in to adults. It is a significant gradient in climatic conditions on Hardangervidda with a coastal impact in the western part of the plateau with a three - to fourfold winter deposition compared to a dryer inland region in the east. The snow deposits have increased since the 1980s and snow rich winters have been more frequent. An additional increase is projected. This may give lower water temperature and shorter ice-free seasons. Thus, the cold western lakes could be even more hostile habitats for L. arcticus. During the same period, an abrupt increase in spring-summer temperatures was detected. This has improved the conditions for L. arcticus in many lakes. However, as a cold stenotherm species a further increase in temperature may be detrimental. Especially in shallow lakes in the central and eastern parts this may be a problem even without reaching critical levels by inducing life cycle mismatches. |
format |
Article in Journal/Newspaper |
author |
Tore Qvenild Eirik Fjeld Arne Fjellheim Sigurd Rognerud Åsmund Tysse |
author_facet |
Tore Qvenild Eirik Fjeld Arne Fjellheim Sigurd Rognerud Åsmund Tysse |
author_sort |
Tore Qvenild |
title |
Climatic effects on a cold stenotherm species Lepidurus arcticus (Branchiopoda, Notostraca) on the southern outreach of its distribution range |
title_short |
Climatic effects on a cold stenotherm species Lepidurus arcticus (Branchiopoda, Notostraca) on the southern outreach of its distribution range |
title_full |
Climatic effects on a cold stenotherm species Lepidurus arcticus (Branchiopoda, Notostraca) on the southern outreach of its distribution range |
title_fullStr |
Climatic effects on a cold stenotherm species Lepidurus arcticus (Branchiopoda, Notostraca) on the southern outreach of its distribution range |
title_full_unstemmed |
Climatic effects on a cold stenotherm species Lepidurus arcticus (Branchiopoda, Notostraca) on the southern outreach of its distribution range |
title_sort |
climatic effects on a cold stenotherm species lepidurus arcticus (branchiopoda, notostraca) on the southern outreach of its distribution range |
publisher |
Norwegian University of Science and Technology |
publishDate |
2018 |
url |
https://doi.org/10.5324/fn.v38i0.2598 https://doaj.org/article/1286944122d4425c9a06f8711e3511dd |
long_lat |
ENVELOPE(-65.317,-65.317,-65.933,-65.933) |
geographic |
Arctic Tadpole |
geographic_facet |
Arctic Tadpole |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Fauna Norvegica, Vol 38 (2018) |
op_relation |
https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/2598 https://doaj.org/toc/1502-4873 https://doaj.org/toc/1891-5396 doi:10.5324/fn.v38i0.2598 1502-4873 1891-5396 https://doaj.org/article/1286944122d4425c9a06f8711e3511dd |
op_doi |
https://doi.org/10.5324/fn.v38i0.2598 |
container_title |
Fauna norvegica |
container_volume |
38 |
container_start_page |
37 |
op_container_end_page |
53 |
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1766346171103576064 |