Population consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic

Abstract Climate-induced plasticity in functional traits has received recent attention due to the immense importance phenotypic variation plays in population level responses. Here, we explore the effect of different climate-change scenarios on lentic populations of a freshwater ectotherm, the brown...

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Autores principales:	Kim Magnus Bærum, Anders G. Finstad, Eva Marita Ulvan, Thrond O. Haugen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0910aeadf1f54ca5b0842dede25a5d54
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spelling	oai:doaj.org-article:0910aeadf1f54ca5b0842dede25a5d542021-12-02T18:46:57ZPopulation consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic10.1038/s41598-021-94350-x2045-2322https://doaj.org/article/0910aeadf1f54ca5b0842dede25a5d542021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94350-xhttps://doaj.org/toc/2045-2322Abstract Climate-induced plasticity in functional traits has received recent attention due to the immense importance phenotypic variation plays in population level responses. Here, we explore the effect of different climate-change scenarios on lentic populations of a freshwater ectotherm, the brown trout (Salmo trutta L.), through climate effects on functional traits. We first parameterize models of climate variables on growth, spawning probability and fecundity. The models are utilized to inform a dynamic age-structured projection matrix, enabling long-term population viability projections under climate and population density variation. Ambient temperature and winter conditions had a substantial effect on population growth rate. In general, warmer summer temperatures resulted in faster growth rates for young fish but ended in smaller size at age as fish got older. Increasing summer temperatures also induced maturation at younger age and smaller size. In addition, we found effects of first-year growth on later growth trajectories for a fish, indicating that environmental conditions experienced the first year will also influence size at age later in life. At the population level, increasing temperatures average (up to 4 °C increase in areas with mean summer temperature at approximately 12 °C) resulted in a positive effect on population growth rate (i.e. smaller but more fish) during climate simulations including increasing and more variable temperatures.Kim Magnus BærumAnders G. FinstadEva Marita UlvanThrond O. HaugenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kim Magnus Bærum Anders G. Finstad Eva Marita Ulvan Thrond O. Haugen Population consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic
description	Abstract Climate-induced plasticity in functional traits has received recent attention due to the immense importance phenotypic variation plays in population level responses. Here, we explore the effect of different climate-change scenarios on lentic populations of a freshwater ectotherm, the brown trout (Salmo trutta L.), through climate effects on functional traits. We first parameterize models of climate variables on growth, spawning probability and fecundity. The models are utilized to inform a dynamic age-structured projection matrix, enabling long-term population viability projections under climate and population density variation. Ambient temperature and winter conditions had a substantial effect on population growth rate. In general, warmer summer temperatures resulted in faster growth rates for young fish but ended in smaller size at age as fish got older. Increasing summer temperatures also induced maturation at younger age and smaller size. In addition, we found effects of first-year growth on later growth trajectories for a fish, indicating that environmental conditions experienced the first year will also influence size at age later in life. At the population level, increasing temperatures average (up to 4 °C increase in areas with mean summer temperature at approximately 12 °C) resulted in a positive effect on population growth rate (i.e. smaller but more fish) during climate simulations including increasing and more variable temperatures.
format	article
author	Kim Magnus Bærum Anders G. Finstad Eva Marita Ulvan Thrond O. Haugen
author_facet	Kim Magnus Bærum Anders G. Finstad Eva Marita Ulvan Thrond O. Haugen
author_sort	Kim Magnus Bærum
title	Population consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic
title_short	Population consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic
title_full	Population consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic
title_fullStr	Population consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic
title_full_unstemmed	Population consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic
title_sort	population consequences of climate change through effects on functional traits of lentic brown trout in the sub-arctic
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0910aeadf1f54ca5b0842dede25a5d54
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Population consequences of climate change through effects on functional traits of lentic brown trout in the sub-Arctic

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