Terrestrial lichen data for Saskatchewan, Canada
Increased fire activity due to climate change may impact the successional dynamics of boreal forests, with important consequences for caribou habitat. Early successional forests have been shown to support lower quantities of caribou forage lichens, but geographic variation in, and controls on, the r...
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ftzenodo:oai:zenodo.org:4552434 2024-09-15T18:26:36+00:00 Terrestrial lichen data for Saskatchewan, Canada Johnstone, Jill Greuel, Ruth Hart, Sarah Truchon-Savard, Alexandre McLoughlin, Philip 2021-02-18 https://doi.org/10.5061/dryad.tb2rbnzzj unknown Zenodo https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.tb2rbnzzj oai:zenodo.org:4552434 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode info:eu-repo/semantics/other 2021 ftzenodo https://doi.org/10.5061/dryad.tb2rbnzzj 2024-07-25T11:06:55Z Increased fire activity due to climate change may impact the successional dynamics of boreal forests, with important consequences for caribou habitat. Early successional forests have been shown to support lower quantities of caribou forage lichens, but geographic variation in, and controls on, the rates of lichen recovery have been largely unexplored. In this study, we sampled across a broad region in northwestern Canada to compare lichen biomass accumulation in ecoprovinces, including the Saskatchewan Boreal Shield, the Northwest Territories Taiga Shield and Northwest Territories Taiga Plains, divided into North and South. We focused on the most valuable Cladonia species for boreal and barren ground caribou: Cladonia mitis and C. arbuscula , C. rangiferina and C. stygia , C. stellaris and C. uncialis . We developed new allometric equations to estimate lichen biomass from field measurements of lichen cover and height; allometries were consistent among ecoprovinces, suggesting generalizability. We then used estimates of lichen biomass to quantify patterns of lichen recovery in different stand types, ecoprovinces, and with time following stand-replacing fire. We used a hurdle model to account both for the heterogeneous nature of lichen presence (zero-inflation), and the range of abundance in stands where lichen was present. The first component of the hurdle model, a generalized linear model (GLM), identified stand age, stand type and ecoprovince as significant predictors of lichen presence. With a logistic growth model, a measure of lichen recovery (time to 50% asymptotic value) varied from 28 to 73 years, dependent on stand type and ecoprovince. The combined predictions of the hurdle model suggest the most rapid recovery of lichen biomass across our study region occurred in jack pine in the Boreal Shield (30 years), while stands located in the Taiga Plains (North and South) required a longer recovery period (approximately 75 years). These results provide a basis for estimating future caribou habitat that ... Other/Unknown Material Northwest Territories taiga Taiga plains Taiga shield Zenodo |
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Increased fire activity due to climate change may impact the successional dynamics of boreal forests, with important consequences for caribou habitat. Early successional forests have been shown to support lower quantities of caribou forage lichens, but geographic variation in, and controls on, the rates of lichen recovery have been largely unexplored. In this study, we sampled across a broad region in northwestern Canada to compare lichen biomass accumulation in ecoprovinces, including the Saskatchewan Boreal Shield, the Northwest Territories Taiga Shield and Northwest Territories Taiga Plains, divided into North and South. We focused on the most valuable Cladonia species for boreal and barren ground caribou: Cladonia mitis and C. arbuscula , C. rangiferina and C. stygia , C. stellaris and C. uncialis . We developed new allometric equations to estimate lichen biomass from field measurements of lichen cover and height; allometries were consistent among ecoprovinces, suggesting generalizability. We then used estimates of lichen biomass to quantify patterns of lichen recovery in different stand types, ecoprovinces, and with time following stand-replacing fire. We used a hurdle model to account both for the heterogeneous nature of lichen presence (zero-inflation), and the range of abundance in stands where lichen was present. The first component of the hurdle model, a generalized linear model (GLM), identified stand age, stand type and ecoprovince as significant predictors of lichen presence. With a logistic growth model, a measure of lichen recovery (time to 50% asymptotic value) varied from 28 to 73 years, dependent on stand type and ecoprovince. The combined predictions of the hurdle model suggest the most rapid recovery of lichen biomass across our study region occurred in jack pine in the Boreal Shield (30 years), while stands located in the Taiga Plains (North and South) required a longer recovery period (approximately 75 years). These results provide a basis for estimating future caribou habitat that ... |
format |
Other/Unknown Material |
author |
Johnstone, Jill Greuel, Ruth Hart, Sarah Truchon-Savard, Alexandre McLoughlin, Philip |
spellingShingle |
Johnstone, Jill Greuel, Ruth Hart, Sarah Truchon-Savard, Alexandre McLoughlin, Philip Terrestrial lichen data for Saskatchewan, Canada |
author_facet |
Johnstone, Jill Greuel, Ruth Hart, Sarah Truchon-Savard, Alexandre McLoughlin, Philip |
author_sort |
Johnstone, Jill |
title |
Terrestrial lichen data for Saskatchewan, Canada |
title_short |
Terrestrial lichen data for Saskatchewan, Canada |
title_full |
Terrestrial lichen data for Saskatchewan, Canada |
title_fullStr |
Terrestrial lichen data for Saskatchewan, Canada |
title_full_unstemmed |
Terrestrial lichen data for Saskatchewan, Canada |
title_sort |
terrestrial lichen data for saskatchewan, canada |
publisher |
Zenodo |
publishDate |
2021 |
url |
https://doi.org/10.5061/dryad.tb2rbnzzj |
genre |
Northwest Territories taiga Taiga plains Taiga shield |
genre_facet |
Northwest Territories taiga Taiga plains Taiga shield |
op_relation |
https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.tb2rbnzzj oai:zenodo.org:4552434 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.tb2rbnzzj |
_version_ |
1810467116401295360 |