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| Impact of global change on woodland diversity and ecosytem productivity in the Alpine region | |
| 项目编号 | ANR-11-PDOC-0030 |
| Monsieur Xavier MORIN | |
| 项目主持机构 | CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE - DELEGATION REGIONALE LANGUEDOC-ROUSSILLON |
| 开始日期 | 2012 |
| 结束日期 | 2015-1-01 |
| 英文摘要 | Forests are terrestrial ecosystems of global importance because they represent an important carbon sink and have a pivotal feedback-mediated role on climate. In the context of global change, obtaining accurate predictions of forest functioning - such as productivity - is thus a decisive and timely scientific task for ecologists. In fact, global change affects directly forest productivity by modifying the abiotic environmental conditions, which alters some biological processes of organisms, such as photosynthesis. But global change also affects ecosystem functioning indirectly through its impact on the geographic distribution of species and more generally through its impact on biodiversity at the global scale, because ecosystem functioning is tightly linked to species richness and composition. Therefore, forecasting changes in biodiversity and their consequences on forest productivity are crucial requirements to mitigate changes in ecosystem services that condition, promote and sustain human activities and well-being. Yet, direct and indirect effects of global change on ecosystem functioning have almost always been studied separately, as they refer to different spatial scales. Furthermore, current approaches aiming to forecast changes in biodiversity and community composition in the future have mostly used correlative models. Such models have proven to be useful to highlight general trends, but they exhibit some limitations when making predictions in the future, as they neglect important factors such as biotic interactions. Thus an integrative approach to jointly consider the two kinds of effects of global change on ecosystem functioning, directly and indirectly, and more relying on ecological mechanisms driving diversity at different spatial scales, is still missing. The aim of this project is to fill this gap, predicting woody plants biodiversity and ecosystem productivity in temperate mountain forests, by considering the effects of abiotic and biotic factors from large to small spatial scale. Mountain forests have been identified as particularly sensitive to climate change. Such a development will benefit from recent advances in community ecology, community phylogenetics, and biogeography, to answer both basic and applied questions in ecology and biodiversity-ecosystem functioning sciences. The project will thus focus on temperate forests in the French Alps, to i) understand what drives biodiversity patterns from regional to local scale and test community assemblages’ hypotheses; ii) understand and predict how community composition affects forest productivity; iii) establish scenarios of changes in biodiversity and productivity in response to global change scenarios. To do so, the project will rely on both a modelling approach and field measurements. A key achievement will be the development and test of a modelling framework linking species distribution models with a process-based forest succession model. Such a framework takes into account factors and processes occurring at various spatial scales to predict biodiversity patterns, community composition and forest productivity, which will enable us to provide scenarios of changes in biodiversity and productivity as a function of global change scenarios. Furthermore, to validate this modelling approach and to provide complementary results from observations, we plan to use existing data such as forest inventory data, completed by field measurements along selected environmental gradients in the French Alps. Field measurements may especially allow a deeper testing of community assemblage rules and a better understanding of how the diversity-productivity relationship is affected by environmental conditions. This project will enhance our knowledge of basic ecological and evolutionary processes that shape the composition of forest communities, and will demonstrate that it is now possible to move towards a “mechanistic approach of biodiversity and ecosystem functioning”. |
| 资助机构 | FR-ANR |
| 项目类型 | Retour Post-Doctorants (RPDOC) 2011 |
| URL | http://www.agence-nationale-recherche.fr/en/anr-funded-project/?solr=run&tx_lwmsuivibilan_pi2%5BCODE%5D=ANR-11-PDOC-0030 |
| 国家 | FR |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/70923 |
| 推荐引用方式 GB/T 7714 | Monsieur Xavier MORIN.Impact of global change on woodland diversity and ecosytem productivity in the Alpine region.2012. |
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