Dynamic effects of insect herbivory and climate on tundra shrub growth: roles of browsing and ramet age
1. To predict shrub responses under climate change in tundra, we need to understand how thermal conditions and herbivory contribute to growth. We hypothesise that shrub growth increases with thermal conditions and precipitation, but that this increase is counteracted by insect herbivory, and that th...
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ftzenodo:oai:zenodo.org:4243503 2024-09-15T18:02:35+00:00 Dynamic effects of insect herbivory and climate on tundra shrub growth: roles of browsing and ramet age Clark, Adam Virtanen, Risto den Herder, Michael Roininen, Heikki 2020-11-09 https://doi.org/10.5061/dryad.wdbrv15mp unknown Zenodo https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.wdbrv15mp oai:zenodo.org:4243503 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Arctic long-term experiment tundra willow EDM info:eu-repo/semantics/other 2020 ftzenodo https://doi.org/10.5061/dryad.wdbrv15mp 2024-07-27T03:50:30Z 1. To predict shrub responses under climate change in tundra, we need to understand how thermal conditions and herbivory contribute to growth. We hypothesise that shrub growth increases with thermal conditions and precipitation, but that this increase is counteracted by insect herbivory, and that these climate-insect herbivory relationships are modified by both browsing and plant age. 2. We use empirical dynamic modelling (EDM) to analyse a 20-year time series on willow (Salix phylicifolia) shoot growth, growing degree days, summer precipitation and herbivory from an experiment at forest-tundra ecotone. The experiment includes manipulations of avian and mammal browsing (fences) and ramet age (pruning to rejuvenate willows). 3. Negative effects of insect herbivory on willow shoot growth were intensified during warmer years, whereas increasing precipitation led to reduced effects. Moreover, the effect of insect herbivores on shoot growth varied with ramet age and vertebrate browsing: Younger ramets generally experienced less negative insect herbivore effects, whereas Ptarmigan browsing was associated with more positive temperature effect on shoot growth, and reindeer browsing with more negative effects of insect herbivory and precipitation. 4. Synthesis. Our findings show that the negative effects of insect herbivory on shoot growth likely intensify under warmer thermal conditions, but that increasing precipitation can counteract these effects. Moreover, changing thermal conditions, precipitation and vertebrate browsers all have predictable, albeit complex and nonlinear, effects on shrub growth, highlighting the importance of long-term experimental data and flexible analytical methods such as EDM for characterizing climate and community interactions in artic systems. Data are in .csv format, with decimal points indicated by ".". "GDD5MJJ" shows summed daily mean temperature in excess of + 5 °C in May–July. "PJune" and "PJuly" show summed annual precipitation in June and July, in mm. Lastly, columns "s1.cm" ... Other/Unknown Material Climate change Tundra Zenodo |
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Arctic long-term experiment tundra willow EDM |
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Arctic long-term experiment tundra willow EDM Clark, Adam Virtanen, Risto den Herder, Michael Roininen, Heikki Dynamic effects of insect herbivory and climate on tundra shrub growth: roles of browsing and ramet age |
topic_facet |
Arctic long-term experiment tundra willow EDM |
description |
1. To predict shrub responses under climate change in tundra, we need to understand how thermal conditions and herbivory contribute to growth. We hypothesise that shrub growth increases with thermal conditions and precipitation, but that this increase is counteracted by insect herbivory, and that these climate-insect herbivory relationships are modified by both browsing and plant age. 2. We use empirical dynamic modelling (EDM) to analyse a 20-year time series on willow (Salix phylicifolia) shoot growth, growing degree days, summer precipitation and herbivory from an experiment at forest-tundra ecotone. The experiment includes manipulations of avian and mammal browsing (fences) and ramet age (pruning to rejuvenate willows). 3. Negative effects of insect herbivory on willow shoot growth were intensified during warmer years, whereas increasing precipitation led to reduced effects. Moreover, the effect of insect herbivores on shoot growth varied with ramet age and vertebrate browsing: Younger ramets generally experienced less negative insect herbivore effects, whereas Ptarmigan browsing was associated with more positive temperature effect on shoot growth, and reindeer browsing with more negative effects of insect herbivory and precipitation. 4. Synthesis. Our findings show that the negative effects of insect herbivory on shoot growth likely intensify under warmer thermal conditions, but that increasing precipitation can counteract these effects. Moreover, changing thermal conditions, precipitation and vertebrate browsers all have predictable, albeit complex and nonlinear, effects on shrub growth, highlighting the importance of long-term experimental data and flexible analytical methods such as EDM for characterizing climate and community interactions in artic systems. Data are in .csv format, with decimal points indicated by ".". "GDD5MJJ" shows summed daily mean temperature in excess of + 5 °C in May–July. "PJune" and "PJuly" show summed annual precipitation in June and July, in mm. Lastly, columns "s1.cm" ... |
format |
Other/Unknown Material |
author |
Clark, Adam Virtanen, Risto den Herder, Michael Roininen, Heikki |
author_facet |
Clark, Adam Virtanen, Risto den Herder, Michael Roininen, Heikki |
author_sort |
Clark, Adam |
title |
Dynamic effects of insect herbivory and climate on tundra shrub growth: roles of browsing and ramet age |
title_short |
Dynamic effects of insect herbivory and climate on tundra shrub growth: roles of browsing and ramet age |
title_full |
Dynamic effects of insect herbivory and climate on tundra shrub growth: roles of browsing and ramet age |
title_fullStr |
Dynamic effects of insect herbivory and climate on tundra shrub growth: roles of browsing and ramet age |
title_full_unstemmed |
Dynamic effects of insect herbivory and climate on tundra shrub growth: roles of browsing and ramet age |
title_sort |
dynamic effects of insect herbivory and climate on tundra shrub growth: roles of browsing and ramet age |
publisher |
Zenodo |
publishDate |
2020 |
url |
https://doi.org/10.5061/dryad.wdbrv15mp |
genre |
Climate change Tundra |
genre_facet |
Climate change Tundra |
op_relation |
https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.wdbrv15mp oai:zenodo.org:4243503 |
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.wdbrv15mp |
_version_ |
1810440022394929152 |