{"type": "FeatureCollection", "features": [{"id": "10.1007/s00442-012-2360-6", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:55:31Z", "type": "Journal Article", "created": "2012-05-21", "title": "Consequences Of Exclusion Of Precipitation On Microorganisms And Microbial Consumers In Montane Tropical Rainforests", "description": "The structure and functioning of decomposer systems heavily relies on soil moisture. However, this has been primarily studied in temperate ecosystems; little is known about how soil moisture affects the microfaunal food web in tropical regions. This lack of knowledge is surprising, since the microfaunal food web controls major ecosystem processes. To evaluate the role of precipitation in the structure of soil food web components (i.e., microorganisms and testate amoebae), we excluded water input by rain in montane rainforests at different altitudes in Ecuador. Rain exclusion strongly reduced microbial biomass and respiration by about 50\u00a0%, and fungal biomass by 23\u00a0%. In testate amoebae, rain exclusion decreased the density of live cells by 91\u00a0% and caused a shift in species composition at each of the altitudes studied, with ergosterol concentrations, microbial biomass, and water content explaining 25\u00a0% of the variation in species data. The results document that reduced precipitation negatively affects soil microorganisms, but that the response of testate amoebae markedly exceeds that of bacteria and fungi. This suggests that, in addition to food, low precipitation directly affects the community structure of testate amoebae, with the effect being more pronounced at lower altitudes. Overall, the results show that microorganisms and testate amoebae rapidly respond to a reduction in precipitation, with testate amoebae-representatives of higher trophic levels-being more sensitive. The results imply that precipitation and soil moisture in tropical rainforests are the main factors regulating decomposition and nutrient turnover.", "keywords": ["2. Zero hunger", "0106 biological sciences", "Tropical Climate", "Food Chain", "Rain", "Water", "15. Life on land", "01 natural sciences", "Trees", "Soil", "13. Climate action", "Community ecology - Original research", "Biomass", "Ecuador", "Amoeba", "Ecology", " Evolution", " Behavior and Systematics", "Soil Microbiology"]}, "links": [{"href": "https://doi.org/10.1007/s00442-012-2360-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oecologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00442-012-2360-6", "name": "item", "description": "10.1007/s00442-012-2360-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-012-2360-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-05-22T00:00:00Z"}}, {"id": "10.1038/s41586-022-04737-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:58:32Z", "type": "Journal Article", "created": "2022-05-18", "title": "Tropical tree mortality has increased with rising atmospheric water stress", "description": "Evidence exists that tree mortality is accelerating in some regions of the tropics1,2, with profound consequences for the future of the tropical carbon sink and the global anthropogenic carbon budget left to limit peak global warming below 2\u2009\u00b0C. However, the mechanisms that may be driving such mortality changes and whether particular species are especially vulnerable remain unclear3-8. Here we analyse a 49-year record of tree dynamics from 24 old-growth forest plots encompassing a broad climatic gradient across the Australian moist tropics and find that annual tree mortality risk has, on average, doubled across all plots and species over the last 35\u00a0years, indicating a potential halving in life expectancy and carbon residence time. Associated losses in biomass were not offset by gains from growth and recruitment. Plots in less moist local climates presented higher average mortality risk, but local mean climate did not predict the pace of temporal increase in mortality risk. Species varied in the trajectories of their mortality risk, with the highest average risk found nearer to the upper end of the atmospheric vapour pressure deficit niches of species. A long-term increase in vapour pressure deficit was evident across the region, suggesting that thresholds involving atmospheric water stress, driven by global warming, may be a primary cause of increasing tree mortality in moist tropical forests.", "keywords": ["Risk", "0301 basic medicine", "Carbon Sequestration", "Time Factors", "[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics", "Population dynamics", "Acclimatization", "[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics", " Phylogenetics and taxonomy", "Global Warming", "History", " 21st Century", "333", "[SDV.BV.BOT] Life Sciences [q-bio]/Vegetal Biology/Botanics", "Trees", "03 medical and health sciences", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "Stress", " Physiological", "[SDV.BID.SPT] Life Sciences [q-bio]/Biodiversity/Systematics", " Phylogenetics and taxonomy", "[SDV.EE.ECO] Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "Community ecology", "Biomass", "580", "Population Density", "Tropical Climate", "0303 health sciences", "Dehydration", "Atmosphere", "Climate-change ecology", "Australia", "Water", "Humidity", "Phylogenetics and taxonomy", "[SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics", "History", " 20th Century", "15. Life on land", "Tropical ecology", "Carbon", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "13. Climate action", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "Forest ecology", "environment/Ecosystems"]}, "links": [{"href": "https://eprints.whiterose.ac.uk/187195/1/Bauman_et_al_ms_Nature_final_AAM.pdf"}, {"href": "https://www.nature.com/articles/s41586-022-04737-7.pdf"}, {"href": "https://doi.org/10.1038/s41586-022-04737-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/s41586-022-04737-7", "name": "item", "description": "10.1038/s41586-022-04737-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/s41586-022-04737-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-05-18T00:00:00Z"}}, {"id": "10.1111/j.1439-0418.2012.01747.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:59:42Z", "type": "Journal Article", "created": "2012-07-23", "title": "Plant-Mediated Effects Of Drought On Aphid Population Structure And Parasitoid Attack", "description": "Abstract<p>The effects of predicted climate change on aphid\uffe2\uff80\uff93natural enemy interactions have principally considered the effects of elevated carbon dioxide concentration and air temperature. However, increased incidence of summer droughts are also predicted in Northern Europe, which could affect aphid\uffe2\uff80\uff93plant interactions and aphid antagonists. We investigated how simulated summer drought affected the bird cherry\uffe2\uff80\uff93oat aphid,  Rhopalosiphum padi  L., and its natural enemy the parasitoid wasp  Aphidius ervi. Drought and, to a greater extent, aphids reduced barley ( Hordeum vulgare) dry mass by 33% and 39%, respectively. Drought reduced leaf and root nitrogen concentrations by 13% and 28%, respectively, but foliar amino acid concentrations and composition remained similar. Aphid numbers were unaffected by drought, but population demography changed significantly; adults constituted 41% of the population on drought\uffe2\uff80\uff90treated plants, but only 26% on those receiving ambient irrigation. Nymphs constituted 56% and 69% of the population on these plants, respectively, suggesting altered aphid development rates on drought\uffe2\uff80\uff90stressed plants. Parasitism rates were significantly lower on drought\uffe2\uff80\uff90stressed plants (9\uffc2\uffa0attacks\uffc2\uffa0h\uffe2\uff88\uff921 compared with 35 attacks h\uffe2\uff88\uff921 on ambient\uffe2\uff80\uff90irrigated plants), most likely because of lower incidence of nymphs and more adults, the latter being more difficult to parasitize. Any physiological changes in individual aphids did not affect parasitoid preferences, suggesting that attacks were postponed because of drought\uffe2\uff80\uff90induced changes in aphid demography. This study demonstrates the potential for sporadic climate change events, such as summer drought, to be disruptive to herbivore\uffe2\uff80\uff93antagonist interactions.</p>", "keywords": ["580", "2. Zero hunger", "0106 biological sciences", "droughts", "Aphidius ervi", "820501 - Barley", "15. Life on land", "01 natural sciences", "6. Clean water", "climatic changes", "Rhopalosiphum padi", "13. Climate action", "060202 - Community Ecology", "Hordeum vulgare"]}, "links": [{"href": "https://doi.org/10.1111/j.1439-0418.2012.01747.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Applied%20Entomology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1439-0418.2012.01747.x", "name": "item", "description": "10.1111/j.1439-0418.2012.01747.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1439-0418.2012.01747.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-07-23T00:00:00Z"}}, {"id": "10.17169/refubium-31202", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:00:38Z", "type": "Journal Article", "created": "2021-05-21", "title": "Global data on earthworm abundance, biomass, diversity and corresponding environmental properties", "description": "Abstract<p>Earthworms are an important soil taxon as ecosystem engineers, providing a variety of crucial ecosystem functions and services. Little is known about their diversity and distribution at large spatial scales, despite the availability of considerable amounts of local-scale data. Earthworm diversity data, obtained from the primary literature or provided directly by authors, were collated with information on site locations, including coordinates, habitat cover, and soil properties. Datasets were required, at a minimum, to include abundance or biomass of earthworms at a site. Where possible, site-level species lists were included, as well as the abundance and biomass of individual species and ecological groups. This global dataset contains 10,840 sites, with 184 species, from 60 countries and all continents except Antarctica. The data were obtained from 182 published articles, published between 1973 and 2017, and 17 unpublished datasets. Amalgamating data into a single global database will assist researchers in investigating and answering a wide variety of pressing questions, for example, jointly assessing aboveground and belowground biodiversity distributions and drivers of biodiversity change.</p>", "keywords": ["2401.17 Invertebrados", "0301 basic medicine", "592", "Data Descriptor", "Ecology and Evolutionary Biology", "earthworms", "Data Descriptor ; Biodiversity ; Biogeography ; Community ecology", "Plan_S-Compliant-OA", "https://purl.org/becyt/ford/1.6", "[SDV.EE.ECO] Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "Diversity data", "Biomass", "S Agriculture (General)", "Ekologia ja evoluutiobiologia", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "biodiversity", "2. Zero hunger", "maaper\u00e4", "abundance", "Data", "Diversity", "0303 health sciences", "Ecology", "Q", "eli\u00f6yhteis\u00f6t", "Biodiversity", "maaper\u00e4eli\u00f6st\u00f6", "ddc:", "Computer Science Applications", "Biogeography", "2401.06 Ecolog\u00eda animal", "international", "Statistics", " Probability and Uncertainty", "environment/Ecosystems", "Information Systems", "Statistics and Probability", "Ecolog\u00eda (Biolog\u00eda)", "570", "lierot", "Science", "Invertebrados", "577", "Global database", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "Library and Information Sciences", "574", "333", "soil", "eli\u00f6maantiede", "Education", "diversity", "03 medical and health sciences", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", " environment/Ecosystems", "BIODIVERSITY CHANGE", "Life Science", "Earthworms", "Datasets", "Animals", "Community ecology", "Oligochaeta", "https://purl.org/becyt/ford/1", "eartworm", "biogeography", "Ecosystem", "LAND-USE", "biomass", "500", "Biology and Life Sciences", "PLATFORM", "Global dataset", "Oligochaeta/classification", "500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie", "Ecolog\u00eda", "15. Life on land", "biodiversiteetti", "Environmental sciences", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "maaper\u00e4el\u00e4imist\u00f6", "Ecology", " evolutionary biology", "13. Climate action", "Earthworm", "[SDV.EE.ECO]Life Sciences [q-bio]/Ecology", "570 Life sciences; biology", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "eartworm ; abundance ; biomass ; diversity", "COMMUNITIES", "community ecology"]}, "links": [{"href": "https://www.nature.com/articles/s41597-021-00912-z.pdf"}, {"href": "https://pub.epsilon.slu.se/25868/1/phillips_h_r_p_et_al_211019.pdf"}, {"href": "https://boris.unibe.ch/165726/1/48.__Global_data_on_earthworm_abundance__biomass__diversity_and_corresponding_environmental_properties.pdf"}, {"href": "https://www.iris.unict.it/bitstream/20.500.11769/509583/1/SCIENTIFIC%20DATA%20%282021%29%20GLOBAL%20DATA%20ON%20EARTHWORMS.pdf"}, {"href": "https://rau.repository.guildhe.ac.uk/id/eprint/16454/1/Phillips_et_al-2021-Scientific_Data.pdf"}, {"href": "https://doi.org/10.17169/refubium-31202"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Data", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.17169/refubium-31202", "name": "item", "description": "10.17169/refubium-31202", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.17169/refubium-31202"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-05-21T00:00:00Z"}}, {"id": "10.25674/362", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:01:24Z", "type": "Journal Article", "title": "Soil BON Earthworm - A global initiative on earthworm distribution, traits, and spatiotemporal diversity patterns", "description": "Open AccessPeer reviewed", "keywords": ["2. Zero hunger", "temporal dynamics", "500", "soil biodiversity", "Biodiversity", "earthworms", "time-series data", "15. Life on land", "Traits", "Microbiology", "630", "QR1-502", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "QL1-991", "Ecology", " evolutionary biology", "global collaboration", "ecosystem functioning", "citizen science", "Community ecology", "functional traits", "14. Life underwater", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "Zoology", "community ecology", "Taxonomy"]}, "links": [{"href": "https://doi.org/10.25674/362"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Organisms", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.25674/362", "name": "item", "description": "10.25674/362", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.25674/362"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}, {"id": "10138/576497", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:05:07Z", "type": "Journal Article", "title": "Soil BON Earthworm - A global initiative on earthworm distribution, traits, and spatiotemporal diversity patterns", "description": "Open AccessPeer reviewed", "keywords": ["2. Zero hunger", "temporal dynamics", "500", "soil biodiversity", "earthworms", "time-series data", "15. Life on land", "Traits", "Microbiology", "630", "QR1-502", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "QL1-991", "Ecology", " evolutionary biology", "global collaboration", "ecosystem functioning", "citizen science", "Community ecology", "functional traits", "14. Life underwater", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "Zoology", "community ecology"]}, "links": [{"href": "https://doi.org/10138/576497"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Organisms", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10138/576497", "name": "item", "description": "10138/576497", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10138/576497"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}, {"id": "50|od______3711::54ca06bb7bccbc8f1d796db5eb07f4cc", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:07:22Z", "type": "Report", "title": "Mutualistic tree-frugivore interactions in Afrotropical forests : from local ecological knowledge to the identification of network interaction patterns", "description": "unspecifiedDans les for\u00eats tropicales la frugivorie est un processus \u00e9cologique majeur, car la plupart des esp\u00e8ces d'arbres d\u00e9pendent des frugivores pour leur dispersion, et de nombreuses esp\u00e8ces animales utilisent les fruits comme principales sources de nourriture. Cependant, les r\u00e9seaux de frugivorie entre plantes et animaux dans les for\u00eats Afrotropicales sont peu d\u00e9crits, et les m\u00e9canismes qui les fa\u00e7onnent restent largement inexplor\u00e9s. Cette th\u00e8se de doctorat aborde une approche structurelle du r\u00e9seau de frugivorie, une approche plantes-communaut\u00e9s et une approche m\u00e9thodologique utilisant les connaissances \u00e9cologiques locales et les cam\u00e9ras.Le chapitre 1 d\u00e9crit le r\u00e9seau de frugivorie des for\u00eats Afrotropicales, bas\u00e9 sur une compilation des interactions de frugivorie issues de la litt\u00e9rature avec >10 000 interactions - 807 esp\u00e8ces d'arbres et 285 esp\u00e8ces animales. La structure du r\u00e9seau a \u00e9t\u00e9 analys\u00e9e avec un latent block model, une m\u00e9thode qui groupe des esp\u00e8ces pr\u00e9sentant des sch\u00e9mas d'interaction similaires et estime les probabilit\u00e9s d'interaction entre elles. Les grands frugivores \u00e9taient les principaux disperseurs de la plupart des arbres et les grands arbres \u00e9taient les principales sources de fruits de la plupart des frugivores. Nos r\u00e9sultats montrent aussi la vuln\u00e9rabilit\u00e9 de ce r\u00e9seau de frugivorie et l'int\u00e9grit\u00e9 fragile des for\u00eats Afrotropicales.Le chapitre 2 s'est concentr\u00e9 sur les variations des traits des communaut\u00e9s d'arbres dans les for\u00eats du Bassin du Congo en relation avec les interactions frugivores. Nos r\u00e9sultats ont montr\u00e9 des diff\u00e9rences dans les traits li\u00e9s \u00e0 la frugivorie selon les types floristiques, les for\u00eats atlantiques offrant de plus gros fruits, tandis que les for\u00eats du Nord pr\u00e9sentaient une plus grande abondance de petits fruits. Nous avons constat\u00e9 que les chimpanz\u00e9s et les calaos interagissent avec les fruits les plus abondants, les \u00e9l\u00e9phants consomment toujours les plus gros fruits offerts par la communaut\u00e9, tandis que les petits oiseaux consomment les plus petits fruits.Le chapitre 3 s'est concentr\u00e9 sur les connaissances \u00e9cologiques locales (LEK) en rapport avec les interactions de frugivorie. Nous avons utilis\u00e9 un ensemble commun d'arbres et d'esp\u00e8ces de frugivores, afin de comparer les informations provenant des LEK et les connaissances acad\u00e9miques. Les populations locales avaient une connaissance substantielle des relations entre arbres et frugivores, avec 39% de nouvelles interactions, modifiant \u00e9galement la structure du r\u00e9seau de frugivorie, en attribuant en moyenne de plus petits frugivores aux esp\u00e8ces d'arbres.Dans le chapitre 4, l\u2019utilisation de cam\u00e9ras pour enregistrer les interactions entre arbres et frugivores de la communaut\u00e9 foresti\u00e8re des frugivores terrestres du Gabon, a permis d\u2019ajouter plus de 30% de nouvelles interactions. La plupart de ces interactions concernaient les petits frugivores comme les rongeurs, mais aussi les grands mammif\u00e8res comme les \u00e9l\u00e9phants et les gorilles. Ces r\u00e9sultats montrent la n\u00e9cessit\u00e9 de poursuivre les recherches sur les interactions arbres-frugivores mais aussi d'int\u00e9grer d'autres sources compl\u00e9mentaires pour appr\u00e9cier la complexit\u00e9 des r\u00e9seaux mutualistes.Ce travail de th\u00e8se a permis de comprendre les diff\u00e9rents m\u00e9canismes qui r\u00e9gissent les interactions entre les arbres et les frugivores, notamment l'importance de la distribution spatiale des esp\u00e8ces et leurs traits biologiques. Nous avons \u00e9galement mis en \u00e9vidence des biais concernant les donn\u00e9es, la plupart des \u00e9tudes portant sur des esp\u00e8ces embl\u00e9matiques et certaines zones, et concernant les diff\u00e9rentes m\u00e9thodes, les cam\u00e9ras se concentrant sur les frugivores terrestres et le LEK \u00e9tant born\u00e9 par les connaissances acad\u00e9miques. Ces r\u00e9sultats nous ont permis de formuler des recommandations pour contrer ces biais, dont la diversification des m\u00e9thodes d'\u00e9chantillonnage des interactions, notamment en collaborant avec les populations locales dans diverses zones Afrotropicales.", "keywords": ["For\u00eats tropicales africaines", "African tropical forest", "Defaunation", "\u00c9cologie des communaut\u00e9s", "Frugivorie", "[SDE.ES] Environmental Sciences/Environment and Society", "Frugivory", "Community ecology", "15. Life on land", "\u00c9cologie tropicale", "Tropical ecology", "D\u00e9faunation"], "contacts": [{"organization": "Durand-Bessart, Clementine", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/50|od______3711::54ca06bb7bccbc8f1d796db5eb07f4cc"}, {"rel": "self", "type": "application/geo+json", "title": "50|od______3711::54ca06bb7bccbc8f1d796db5eb07f4cc", "name": "item", "description": "50|od______3711::54ca06bb7bccbc8f1d796db5eb07f4cc", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/50|od______3711::54ca06bb7bccbc8f1d796db5eb07f4cc"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-01-01T00:00:00Z"}}, {"id": "oai:HAL:tel-03962339v1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T07:13:39Z", "type": "Report", "title": "Mutualistic tree-frugivore interactions in Afrotropical forests : from local ecological knowledge to the identification of network interaction patterns", "description": "unspecifiedDans les for\u00eats tropicales la frugivorie est un processus \u00e9cologique majeur, car la plupart des esp\u00e8ces d'arbres d\u00e9pendent des frugivores pour leur dispersion, et de nombreuses esp\u00e8ces animales utilisent les fruits comme principales sources de nourriture. Cependant, les r\u00e9seaux de frugivorie entre plantes et animaux dans les for\u00eats Afrotropicales sont peu d\u00e9crits, et les m\u00e9canismes qui les fa\u00e7onnent restent largement inexplor\u00e9s. Cette th\u00e8se de doctorat aborde une approche structurelle du r\u00e9seau de frugivorie, une approche plantes-communaut\u00e9s et une approche m\u00e9thodologique utilisant les connaissances \u00e9cologiques locales et les cam\u00e9ras.Le chapitre 1 d\u00e9crit le r\u00e9seau de frugivorie des for\u00eats Afrotropicales, bas\u00e9 sur une compilation des interactions de frugivorie issues de la litt\u00e9rature avec >10 000 interactions - 807 esp\u00e8ces d'arbres et 285 esp\u00e8ces animales. La structure du r\u00e9seau a \u00e9t\u00e9 analys\u00e9e avec un latent block model, une m\u00e9thode qui groupe des esp\u00e8ces pr\u00e9sentant des sch\u00e9mas d'interaction similaires et estime les probabilit\u00e9s d'interaction entre elles. Les grands frugivores \u00e9taient les principaux disperseurs de la plupart des arbres et les grands arbres \u00e9taient les principales sources de fruits de la plupart des frugivores. Nos r\u00e9sultats montrent aussi la vuln\u00e9rabilit\u00e9 de ce r\u00e9seau de frugivorie et l'int\u00e9grit\u00e9 fragile des for\u00eats Afrotropicales.Le chapitre 2 s'est concentr\u00e9 sur les variations des traits des communaut\u00e9s d'arbres dans les for\u00eats du Bassin du Congo en relation avec les interactions frugivores. Nos r\u00e9sultats ont montr\u00e9 des diff\u00e9rences dans les traits li\u00e9s \u00e0 la frugivorie selon les types floristiques, les for\u00eats atlantiques offrant de plus gros fruits, tandis que les for\u00eats du Nord pr\u00e9sentaient une plus grande abondance de petits fruits. Nous avons constat\u00e9 que les chimpanz\u00e9s et les calaos interagissent avec les fruits les plus abondants, les \u00e9l\u00e9phants consomment toujours les plus gros fruits offerts par la communaut\u00e9, tandis que les petits oiseaux consomment les plus petits fruits.Le chapitre 3 s'est concentr\u00e9 sur les connaissances \u00e9cologiques locales (LEK) en rapport avec les interactions de frugivorie. Nous avons utilis\u00e9 un ensemble commun d'arbres et d'esp\u00e8ces de frugivores, afin de comparer les informations provenant des LEK et les connaissances acad\u00e9miques. Les populations locales avaient une connaissance substantielle des relations entre arbres et frugivores, avec 39% de nouvelles interactions, modifiant \u00e9galement la structure du r\u00e9seau de frugivorie, en attribuant en moyenne de plus petits frugivores aux esp\u00e8ces d'arbres.Dans le chapitre 4, l\u2019utilisation de cam\u00e9ras pour enregistrer les interactions entre arbres et frugivores de la communaut\u00e9 foresti\u00e8re des frugivores terrestres du Gabon, a permis d\u2019ajouter plus de 30% de nouvelles interactions. La plupart de ces interactions concernaient les petits frugivores comme les rongeurs, mais aussi les grands mammif\u00e8res comme les \u00e9l\u00e9phants et les gorilles. Ces r\u00e9sultats montrent la n\u00e9cessit\u00e9 de poursuivre les recherches sur les interactions arbres-frugivores mais aussi d'int\u00e9grer d'autres sources compl\u00e9mentaires pour appr\u00e9cier la complexit\u00e9 des r\u00e9seaux mutualistes.Ce travail de th\u00e8se a permis de comprendre les diff\u00e9rents m\u00e9canismes qui r\u00e9gissent les interactions entre les arbres et les frugivores, notamment l'importance de la distribution spatiale des esp\u00e8ces et leurs traits biologiques. Nous avons \u00e9galement mis en \u00e9vidence des biais concernant les donn\u00e9es, la plupart des \u00e9tudes portant sur des esp\u00e8ces embl\u00e9matiques et certaines zones, et concernant les diff\u00e9rentes m\u00e9thodes, les cam\u00e9ras se concentrant sur les frugivores terrestres et le LEK \u00e9tant born\u00e9 par les connaissances acad\u00e9miques. Ces r\u00e9sultats nous ont permis de formuler des recommandations pour contrer ces biais, dont la diversification des m\u00e9thodes d'\u00e9chantillonnage des interactions, notamment en collaborant avec les populations locales dans diverses zones Afrotropicales.", "keywords": ["For\u00eats tropicales africaines", "African tropical forest", "Defaunation", "Frugivorie", "\u00c9cologie des communaut\u00e9s", "[SDE.ES] Environmental Sciences/Environment and Society", "Frugivory", "Community ecology", "15. 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