TRAIT-ENV DIVERSITY · Relationship between the diversity of habitat, species, and biological traits at multiple spatial and temporal scales in streams
6РП — Действия „Мария Кюри“
- Период
- 2007-04-03 → 2009-04-02
- Финансиране от ЕС
- 162 110 €
- Участници
- 1
- Схема
- IIF
Линиите свързват координатора с партньорите.
Накратко на български
Връзката между средата и биоразнообразието на безгръбначите в потоците се анализира чрез техните биологични характеристики, като например хранителните навици или продължителността на живота. Това помага за създаването на инструменти за оценка на здравето на екосистемите.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Final Activity Report Summary - TRAIT-ENV DIVERSITY (Relationship between the diversity of habitat, species, and biological traits at multiple spatial and temporal scales in streams)
The goal of the 'Relationship between the diversity of habitat, species, and biological traits at multiple spatial and temporal scales in streams' (TRAIT-ENV DIVERSITY) project was to determine the influence of various environmental factors on the biodiversity of stream invertebrates at large spatial scales. In particular, the research team was interested in two main issues: (1) What is the relationship between environmental diversity and biological diversity? and (2) Can we use such biological diversity in a tool for assessing ecosystem health? To examine these issues, biological traits of the organisms were used, because it was hypothesised that these traits (e.g. life span, morphology, food eaten, behaviour) would have an important impact on their distributions and abundance, and thereby on the biodiversity patterns. First, the research team examined the influence of environmental factors (size, diversity, and condition of the stream habitat) on biological diversity at multiple spatial scales. Then, there was a comparison among trait patterns of communities across continents (United States and Europe) to determine whether biological traits could be used at a large spatial scale to compare communities made up of different species. Lastly, the potential of biological traits to be used as a bio-monitoring tool was examined, particularly for assessing the effects of multiple impacts at a given site. Overall, it was found that trait composition is relatively stable across large spatial scales (even cross-continent) in natural or semi-natural conditions. Conforming to the expectations, it was also found that environmental factors at multiple spatial scales influence both trait and taxonomic composition of communities (i.e. there are 'filters' at continental, regional, landscape, and local scales that influence the composition of communities). Furthermore, it was found that traits provide a promising tool for linking species responses to multiple impacts in river ecosystems. In conclusion, this project shows that the biological trait approach provides an intellectual link between theoretical and applied ecology that is not limited to running water ecosystems.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
The objective of this proposed research is to use life history and biological characteristics (species traits) of aquatic macro-invertebrates to address two major concepts in ecology: the habitat heterogeneity hypothesis" (HHH) and the "habitat templet concept" (HTC) which are commonly invoked in both basic and applied ecology (e.g., in biological monitoring).Using a combination of field-based research and synthesis of large datasets from California (CA) and France (FR), I will address the following objectives:(1) to make an inter-continental comparison of the relationship between trait composition, functional diversity and physical habitat (e.g., hydrology) of aquatic invertebrate communities between CA and FR at multiple spatial (microhabitat to region) and temporal scales (between seasons and years);(2) determine the relationship between functional diversity and habitat diversity/complexity at multiple spatial and temporal scales; and(3) compare the performance of individual traits (e.g., strong dispersal ability) versus a composite metric (functional diversity) in biological monitoring. 16 species traits (e.g., body size, life span, number of offspring) for >300 CA taxa and 264 FR taxa will be used to calculate functional diversity, as well as analyses of individual traits. Data from 85 sites in CA and > 65 sites in FR will be used for all three objectives.In addition, intensive sampling of streams from multiple regions in FR (at nested spatial scale) will be used to for objective (2). Finally, the results from (1) and (2) will be used to develop a ¿mean-model¿ which can be used to evaluate the health and cause of impairment of disturbed streams. The examination of the relationships between the species traits, functional diversity, and the habitat heterogeneity of streams at multiple spatial and temporal scales is a novel approach to addressing the HTC and the HHH."
Оригинален текст от CORDIS (на английски).
Участници
- UNIVERSITE CLAUDE BERNARD LYON 1 · VILLEURBANNEКоординаторФранция
Връзки
Данни: CORDIS, © Европейски съюз