A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes
Source at https://doi.org/10.3391/ai.2017.12.4.06 . Many invasive species are expanding northwards into boreal and subarctic habitats, but research on the factors favoring their establishment in these regions remains limited. In three Swedish lakes we investigated the growth of Elodea canadensis Mic...
Published in: | Aquatic Invasions |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Regional Euro-Asian Biological Invasions Centre (REABIC)
2017
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/12357 https://doi.org/10.3391/ai.2017.12.4.06 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/12357 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/12357 2023-05-15T18:28:19+02:00 A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes Tattersdill, Kristina Ecke, Frauke Frainer, André McKie, Brendan G. 2017-11-20 https://hdl.handle.net/10037/12357 https://doi.org/10.3391/ai.2017.12.4.06 eng eng Regional Euro-Asian Biological Invasions Centre (REABIC) Aquatic Invasions Andre: Swedish Research Council (grant number 2011–836) Tattersdill, K., Ecke, F., Frainer, A. & McKie, B.G. (2017). A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes. Aquatic Invasions, 12(4), 487-498. FRIDAID 1532340 doi:10.3391/ai.2017.12.4.06 1818-5487 https://hdl.handle.net/10037/12357 openAccess Canadian waterweed growth morphology fragmentation intraspecific facilitation littoral zone non-indigenous species VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 Journal article Tidsskriftartikkel Peer reviewed 2017 ftunivtroemsoe https://doi.org/10.3391/ai.2017.12.4.06 2021-06-25T17:55:37Z Source at https://doi.org/10.3391/ai.2017.12.4.06 . Many invasive species are expanding northwards into boreal and subarctic habitats, but research on the factors favoring their establishment in these regions remains limited. In three Swedish lakes we investigated the growth of Elodea canadensis Michx, a highly invasive macrophyte that is spreading northwards in Europe and Alaska. We conducted an in situ growth experiment, maintained for ten months, in concert with two field macrophyte surveys, undertaken in summer and spring. We further compared the performance of propagules established during summer with those established under less favorable conditions in late autumn. We found that E. canadensis grew throughout the autumn, followed by winter dieback, with regrowth occurring early in the spring when water temperatures remained under 5 °C. Elodea canadensis plants were frequently found in our spring field survey, soon after ice melt, when almost all other species were still dormant. In the growth experiment, growth of individual shoots was positively associated with key abiotic variables (especially alkalinity) and also with increasing cover of E. canadensis. The tendency of propagule shoots to fragment from the main stems was also positively associated with increasing E. canadensis length and ambient population cover. Although propagules established in November initially did worse the following spring than those established in August, by the start of the following summer both groups were growing equally well, and had converged in morphology. The growth of E. canadensis throughout autumn and its early re-growth in spring, the capacity of propagules established even in late autumn to regrow well the following year, and the apparently self-reinforcing effect of increasing local population size on shoot growth all have the potential to benefit E. canadensis as it spreads north into boreal and subarctic regions. Article in Journal/Newspaper Subarctic Alaska University of Tromsø: Munin Open Research Archive Aquatic Invasions 12 4 487 498 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
Canadian waterweed growth morphology fragmentation intraspecific facilitation littoral zone non-indigenous species VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 |
spellingShingle |
Canadian waterweed growth morphology fragmentation intraspecific facilitation littoral zone non-indigenous species VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 Tattersdill, Kristina Ecke, Frauke Frainer, André McKie, Brendan G. A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes |
topic_facet |
Canadian waterweed growth morphology fragmentation intraspecific facilitation littoral zone non-indigenous species VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 |
description |
Source at https://doi.org/10.3391/ai.2017.12.4.06 . Many invasive species are expanding northwards into boreal and subarctic habitats, but research on the factors favoring their establishment in these regions remains limited. In three Swedish lakes we investigated the growth of Elodea canadensis Michx, a highly invasive macrophyte that is spreading northwards in Europe and Alaska. We conducted an in situ growth experiment, maintained for ten months, in concert with two field macrophyte surveys, undertaken in summer and spring. We further compared the performance of propagules established during summer with those established under less favorable conditions in late autumn. We found that E. canadensis grew throughout the autumn, followed by winter dieback, with regrowth occurring early in the spring when water temperatures remained under 5 °C. Elodea canadensis plants were frequently found in our spring field survey, soon after ice melt, when almost all other species were still dormant. In the growth experiment, growth of individual shoots was positively associated with key abiotic variables (especially alkalinity) and also with increasing cover of E. canadensis. The tendency of propagule shoots to fragment from the main stems was also positively associated with increasing E. canadensis length and ambient population cover. Although propagules established in November initially did worse the following spring than those established in August, by the start of the following summer both groups were growing equally well, and had converged in morphology. The growth of E. canadensis throughout autumn and its early re-growth in spring, the capacity of propagules established even in late autumn to regrow well the following year, and the apparently self-reinforcing effect of increasing local population size on shoot growth all have the potential to benefit E. canadensis as it spreads north into boreal and subarctic regions. |
format |
Article in Journal/Newspaper |
author |
Tattersdill, Kristina Ecke, Frauke Frainer, André McKie, Brendan G. |
author_facet |
Tattersdill, Kristina Ecke, Frauke Frainer, André McKie, Brendan G. |
author_sort |
Tattersdill, Kristina |
title |
A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes |
title_short |
A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes |
title_full |
A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes |
title_fullStr |
A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes |
title_full_unstemmed |
A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes |
title_sort |
head start for an invasive species in a strongly seasonal environment? growth of elodea canadensis in boreal lakes |
publisher |
Regional Euro-Asian Biological Invasions Centre (REABIC) |
publishDate |
2017 |
url |
https://hdl.handle.net/10037/12357 https://doi.org/10.3391/ai.2017.12.4.06 |
genre |
Subarctic Alaska |
genre_facet |
Subarctic Alaska |
op_relation |
Aquatic Invasions Andre: Swedish Research Council (grant number 2011–836) Tattersdill, K., Ecke, F., Frainer, A. & McKie, B.G. (2017). A head start for an invasive species in a strongly seasonal environment? Growth of Elodea canadensis in boreal lakes. Aquatic Invasions, 12(4), 487-498. FRIDAID 1532340 doi:10.3391/ai.2017.12.4.06 1818-5487 https://hdl.handle.net/10037/12357 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3391/ai.2017.12.4.06 |
container_title |
Aquatic Invasions |
container_volume |
12 |
container_issue |
4 |
container_start_page |
487 |
op_container_end_page |
498 |
_version_ |
1766210748046901248 |