Search results for "NICHE BREADTH"

showing 3 items of 3 documents

Variations spatiales et temporelles des communautés adventices des cultures annuelles en France

2007

Although arable weed species are particularly well adapted to habitats characterised by high levels of disturbance(ploughing, harvest), the degree and rate at which agro-ecosytems have been transformed in the last 50 years in Europe(use of chemicals, changes in crop rotations) has led to profound changes in the composition and diversity of arable weedcommunities. This thesis provides an update on the composition and diversity of weed communities that can be foundacross the main crop types and regions of France. It also addresses two objectives i) applying (community) ecologytheories for the analysis and interpretation of spatial and temporal variations in weed communities and ii) using the …

0106 biological sciences[SDE] Environmental Sciences[SDV]Life Sciences [q-bio]specialistsspecies turnovercommunauté.CommunityPlant Science01 natural sciencesVALEURS INDICATRICES D'ELLENBERGarable weedCOMMUNAUTEplant functional typespecies richnessBIOVIGILANCE FLOREfield margins[SDV.EE]Life Sciences [q-bio]/Ecology environmentabundancediversité fonctionnelleGENERALISTESflora shifts04 agricultural and veterinary sciencesfunctional diversityBORD DE CHAMPGROUPE FONCTIONNEL[SDV] Life Sciences [q-bio][SDV.EE] Life Sciences [q-bio]/Ecology environmentGeographyADVENTICESNICHE ECOLOGIQUEfrequency[SDE]Environmental SciencesSPECIALISTESTURNOVERrichesse spécifiquegeneralistsniche écologiqueCHANGEMENT DE FLORE010603 evolutionary biologyEllenberg indicator valuesABONDANCERICHESSE SPECIFIQUEniche breadthfréquencecropping practices changesFREQUENCECHANGEMENT DE TECHNIQUES CULTURALESDIVERSITE FONCTIONNELLEgénéralistes040103 agronomy & agriculture0401 agriculture forestry and fisheriesspécialistesTRAITS BIOLOGIQUES
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Testing macroecological abundance patterns:the relationship between local abundance and range size, range position and climatic suitability among Eur…

2020

Aim A fundamental question in macroecology centres around understanding the relationship between species' local abundance and their distribution in geographical and climatic space (i.e. the multi-dimensional climatic space or climatic niche). Here, we tested three macroecological hypotheses that link local abundance to the following range properties: (a) the abundance-range size relationship, (b) the abundance-range centre relationship and (c) the abundance-suitability relationship. Location Europe. Taxon Vascular plants. Methods Distribution range maps were extracted from the Chorological Database Halle to derive information on the range and niche sizes of 517 European vascular plant speci…

0106 biological sciencescommonness and rarityClimatic suitabilityRange (biology)[SDE.MCG]Environmental Sciences/Global ChangesCommonness and raritydistributionsRange size[SDV.BID]Life Sciences [q-bio]/Biodiversityshape010603 evolutionary biology01 natural sciencesVegetation-plot dataRealized climatic nichemodelsAbundanceniche breadthAbundance (ecology)577: ÖkologiePlant ecologyspecies distribution modelsEcology Evolution Behavior and Systematicsclimatic suitabilityrange size[SDV.EE]Life Sciences [q-bio]/Ecology environmentClimatology2. Zero hungerabundanceEcologyrealized climatic nicheEcologyEcologia vegetal010604 marine biology & hydrobiologyconservationresolutionSpecies distribution modeldynamics15. Life on landvegetation-plot data580: Pflanzen (Botanik)GeographyClimatologiacommunity[SDE.BE]Environmental Sciences/Biodiversity and EcologyResolutionVegetation‐plot data
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Variations spatiales et temporelles de communautés adventices des cultures annuelles en France

2010

Résumé de thèse; National audience

[SDE] Environmental SciencesELLENBERG INDICATOR VALUESFIELDS MARGINS[SDV]Life Sciences [q-bio]ARABLE WEEDPLANT FUNCTIONAL TYPENICHE BREADTHSPECIALISTSFREQUENCYCHANGEMENT DE FLOREABONDANCEVALEURS INDICATRICES D'ELLENBERGFUNCTIONAL DIVERSITYCOMMUNAUTERICHESSE SPECIFIQUEBIOVIGILANCE FLOREFREQUENCESPECIES RICHNESSGENERALISTESCHANGEMENT DE TECHNIQUES CULTURALESBORD DE CHAMPFLORA SHIFTS[SDV] Life Sciences [q-bio]COMMUNITYGROUPE FONCTIONNELDIVERSITE FONCTIONNELLEFUNCTIONAL TRAITSCROPPING PRACTICES CHANGESNICHE ECOLOGIQUESPECIALISTES[SDE]Environmental SciencesTURNOVERABUNDANCEGENERALISTSTRAITS BIOLOGIQUESSPECIES TURNOVER
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