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Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?

Like large carnivores, hunters both kill and scare ungulates, and thus might indirectly affect plant performance through trophic cascades. In this study, we hypothesized that intensive hunting and enduring fear of humans have caused moose and other forest ungulates to partly avoid areas near human i...

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Autores principales: Mehlhoop, Anne C., Van Moorter, Bram, Rolandsen, Christer M., Hagen, Dagmar, Granhus, Aksel, Eriksen, Rune, Ringsby, Thor Harald, Solberg, Erling J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8977646/
https://www.ncbi.nlm.nih.gov/pubmed/35386875
http://dx.doi.org/10.1002/ece3.8795
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author Mehlhoop, Anne C.
Van Moorter, Bram
Rolandsen, Christer M.
Hagen, Dagmar
Granhus, Aksel
Eriksen, Rune
Ringsby, Thor Harald
Solberg, Erling J.
author_facet Mehlhoop, Anne C.
Van Moorter, Bram
Rolandsen, Christer M.
Hagen, Dagmar
Granhus, Aksel
Eriksen, Rune
Ringsby, Thor Harald
Solberg, Erling J.
author_sort Mehlhoop, Anne C.
collection PubMed
description Like large carnivores, hunters both kill and scare ungulates, and thus might indirectly affect plant performance through trophic cascades. In this study, we hypothesized that intensive hunting and enduring fear of humans have caused moose and other forest ungulates to partly avoid areas near human infrastructure (perceived hunting risk), with positive cascading effects on recruitment of trees. Using data from the Norwegian forest inventory, we found decreasing browsing pressure and increasing tree recruitment in areas close to roads and houses, where ungulates are more likely to encounter humans. However, although browsing and recruitment were negatively related, reduced browsing was only responsible for a small proportion of the higher tree recruitment near human infrastructure. We suggest that the apparently weak cascading effect occurs because the recorded browsing pressure only partly reflects the long‐term browsing intensity close to humans. Accordingly, tree recruitment was also related to the density of small trees 5–10 years earlier, which was higher close to human infrastructure. Hence, if small tree density is a product of the browsing pressure in the past, the cascading effect is probably stronger than our estimates suggest. Reduced browsing near roads and houses is most in line with risk avoidance driven by fear of humans (behaviorally mediated), and not because of excessive hunting and local reduction in ungulate density (density mediated).
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spelling pubmed-89776462022-04-05 Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses? Mehlhoop, Anne C. Van Moorter, Bram Rolandsen, Christer M. Hagen, Dagmar Granhus, Aksel Eriksen, Rune Ringsby, Thor Harald Solberg, Erling J. Ecol Evol Research Articles Like large carnivores, hunters both kill and scare ungulates, and thus might indirectly affect plant performance through trophic cascades. In this study, we hypothesized that intensive hunting and enduring fear of humans have caused moose and other forest ungulates to partly avoid areas near human infrastructure (perceived hunting risk), with positive cascading effects on recruitment of trees. Using data from the Norwegian forest inventory, we found decreasing browsing pressure and increasing tree recruitment in areas close to roads and houses, where ungulates are more likely to encounter humans. However, although browsing and recruitment were negatively related, reduced browsing was only responsible for a small proportion of the higher tree recruitment near human infrastructure. We suggest that the apparently weak cascading effect occurs because the recorded browsing pressure only partly reflects the long‐term browsing intensity close to humans. Accordingly, tree recruitment was also related to the density of small trees 5–10 years earlier, which was higher close to human infrastructure. Hence, if small tree density is a product of the browsing pressure in the past, the cascading effect is probably stronger than our estimates suggest. Reduced browsing near roads and houses is most in line with risk avoidance driven by fear of humans (behaviorally mediated), and not because of excessive hunting and local reduction in ungulate density (density mediated). John Wiley and Sons Inc. 2022-04-03 /pmc/articles/PMC8977646/ /pubmed/35386875 http://dx.doi.org/10.1002/ece3.8795 Text en © 2022 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Articles
Mehlhoop, Anne C.
Van Moorter, Bram
Rolandsen, Christer M.
Hagen, Dagmar
Granhus, Aksel
Eriksen, Rune
Ringsby, Thor Harald
Solberg, Erling J.
Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?
title Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?
title_full Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?
title_fullStr Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?
title_full_unstemmed Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?
title_short Moose in our neighborhood: Does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?
title_sort moose in our neighborhood: does perceived hunting risk have cascading effects on tree performance in vicinity of roads and houses?
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8977646/
https://www.ncbi.nlm.nih.gov/pubmed/35386875
http://dx.doi.org/10.1002/ece3.8795
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