Knowledge Element Intended Reader: Forest Manager Researcher |
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Tree species diversity mitigates disturbance impacts on the forest carbon cycle
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Tree species diversity mitigates disturbance impacts on the forest carbon cycle
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value (String, 3286 characters ) <p>Biodiversity fosters the functioning and sta...
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<p>Biodiversity fosters the functioning and stability of forest ecosystems and, consequently, the provision of crucial ecosystem services that support <strong>human well-being</strong> and quality of life. In particular, it has been suggested that <strong>tree species</strong> <strong>diversity</strong> buffers ecosystems against the impacts of <strong>disturbances</strong>, a relationship known as the “insurance hypothesis”. Natural <strong>disturbances</strong> have increased across Europe in recent decades and <strong>climate change</strong> is expected to amplify the frequency and severity of <strong>disturbance</strong> events.</p> <p>In this context, mitigating <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=123" rel="skos:related">disturbance</a> impacts and increasing the <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=150" rel="skos:related">resilience</a> of forest ecosystems is of growing importance. We have tested how <strong>tree species</strong> <strong>diversity</strong> modulates the impact of <strong>disturbance</strong> on net <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=102" rel="skos:related">primary production</a> and the total carbon stored in living biomass for a temperate forest landscape in Central Europe. Using the simulation model iLand to study the effect of different <strong>disturbance</strong> regimes<br /> on landscapes with varying levels of <strong>tree species</strong> richness, we found that increasing <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=162" rel="skos:related">diversity</a> generally reduces the <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=123" rel="skos:related">disturbance</a> impact on <strong>carbon storage</strong> and uptake, but that this effect weakens or even reverses with successional development. Our simulations indicate a clear positive relationship between <strong>diversity</strong> and <strong>resilience</strong>, with more diverse systems experiencing lower disturbance-induced variability in<br /> their trajectories of ecosystem functioning. We found positive effects of <strong>tree species</strong> <strong>diversity</strong> are mainly driven by an increase in <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=33" rel="skos:related">functional diversity</a> and a modulation of traits related to recolonization and <strong>resource</strong> usage. The results of our study suggest that increasing <strong>tree species</strong> <strong>diversity</strong> could mitigate the effects of intensifying <strong>disturbance</strong> regimes on ecosystem functioning and improve the robustness of forest <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=144" rel="skos:related">carbon storage</a> and the role of forests in <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=20" rel="skos:related">climate change</a> mitigation.</p> <p> </p> <p> </p>
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<p>Biodiversity fosters the functioning and stability of forest ecosystems and, consequently, the provision of crucial ecosystem services that support <strong>human well-being</strong> and quality of life. In particular, it has been suggested that <strong>tree species</strong> <strong>diversity</strong> buffers ecosystems against the impacts of <strong>disturbances</strong>, a relationship known as the “insurance hypothesis”. Natural <strong>disturbances</strong> have increased across Europe in recent decades and <strong>climate change</strong> is expected to amplify the frequency and severity of <strong>disturbance</strong> events.</p> <p>In this context, mitigating <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=123" rel="skos:related">disturbance</a> impacts and increasing the <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=150" rel="skos:related">resilience</a> of forest ecosystems is of growing importance. We have tested how <strong>tree species</strong> <strong>diversity</strong> modulates the impact of <strong>disturbance</strong> on net <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=102" rel="skos:related">primary production</a> and the total carbon stored in living biomass for a temperate forest landscape in Central Europe. Using the simulation model iLand to study the effect of different <strong>disturbance</strong> regimes<br /> on landscapes with varying levels of <strong>tree species</strong> richness, we found that increasing <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=162" rel="skos:related">diversity</a> generally reduces the <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=123" rel="skos:related">disturbance</a> impact on <strong>carbon storage</strong> and uptake, but that this effect weakens or even reverses with successional development. Our simulations indicate a clear positive relationship between <strong>diversity</strong> and <strong>resilience</strong>, with more diverse systems experiencing lower disturbance-induced variability in<br /> their trajectories of ecosystem functioning. We found positive effects of <strong>tree species</strong> <strong>diversity</strong> are mainly driven by an increase in <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=33" rel="skos:related">functional diversity</a> and a modulation of traits related to recolonization and <strong>resource</strong> usage. The results of our study suggest that increasing <strong>tree species</strong> <strong>diversity</strong> could mitigate the effects of intensifying <strong>disturbance</strong> regimes on ecosystem functioning and improve the robustness of forest <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=144" rel="skos:related">carbon storage</a> and the role of forests in <a class="entity concept acknowledged" href="http://fundiveuropektp.boku.ac.at/tematres/vocab/?tema=20" rel="skos:related">climate change</a> mitigation.</p> <p> </p> <p> </p>
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