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biota

108 record(s)
 
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From 1 - 10 / 108
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    Etude de la diversité des communautés de pucerons et de coléoptères carabiques dans des parcelles de blé et de Maïs dans divers contextes paysagers au sein du bocage (ZAA) 24 parcelles de blé (12 chaque année) et 24 parcelles de Maïs (12 chaque année) échantillonnée de Mai à Septembre Echantillonnage des carabes par pot-pièges enterrés Echantillonnage des pucerons à vue Al Hassan, D., Parisey, N., Burel, F., Plantegenest M., Kindlmann, P., Butet, A.. 2012. Relationship between the abundance of aphids and their natural enemies in cereal fields and landscape composition. European Journal of Environmental Sciences, 2: 89-101 Al Hassan, D., Georgelin, E., Delattre, T., Burel, F., Plantegenest, M., Kindlmann, P., Butet, A. 2013. Does the presence of grassy strips and landscape grain affect the spatial distribution of aphids and their carabid predators ? Agricultural and Forest Entomology, 15: 24-33. Programme ANR Systerra LANDSCAPHID 2010-2014 « Influence du paysage sur les pucerons ravageurs des cultures et le potentiel de contrôle biologique ».

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    Suivi temporel de la diversité et de l’abondance des communautés de petits mammifères sur les digues plantées de la zone des polders cultivés de la baie du mont st Michel. 7 sessions de piégeage : 1ère session sur 19 stations , 6 sessions suivantes sur 27 stations (9 stations sur digues herbeuses et 18 sur digues plantées). Méthode : line transect : 34 pièges INRA appâtés espacés tous les 3 mètres sur un transect de 100 mètres. Relevés à 24 et 48 heures Articles de référence : -Paillat, G., Rognant, F., Deunff, J. and Butet, A. 2000. Habitat isolation and genetic divergence of bank vole populations. Z. Säugetierkunde, 65 : 55-58. -Ouin, A., Paillat, G., Butet, A. and Burel, F. 2000. Spatial dynamics of wood mouse (Apodemus sylvaticus) in an agricultural landscape under intensive use in the Mont Saint michel bay (France). Agriculture, Ecosystems and Environment, 78 : 159-165. -Butet, A., Paillat, G. & Delettre Y. 2006. Seasonal changes in small mammal assemblages from field boundaries in an agricultural landscape of western France. Agriculture, Ecosystems and Environment, 113 : 364-369. -Butet, A., Paillat, G. & Delettre, Y. 2006. Factors driving small rodent assemblages from field boundaries in agricultural landscapes of western France. Landscape Ecology, 21 : 449-461. Programme : aucun programme particulier

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    This is a data set on some morphological and physiological impacts of salinity on two isolated of Microcystis aeruginosa performed in laboratory experiments in the spring of 2022. Two non axenic isolated colonial Microcystis aeruginosa strains (PMC1323.21 and PMC1262.20) were used for the experiments. Both strains were provided by the Paris Museum Collection (PMC). For these experiments, colonies of both strains were grown in BG11 medium in Erlenmeyer flasks and kept in an exponentially growing phase. The batch cultures were stored in a growing chamber at 22 °C and under a light intensity of 40 μE/m2/s with a photoperiod of 14h/10h. For details see Bormans et al 2023 in MicrobiologyOpen This data set contains the following sheets: read_me cell_diameter_strain_1323.21 cell_diameter_strain_1262.20 volume_colonies_7d_strain_1262.20 volume_colonies_3d_strain_1262.20 autofluorescence 1323.21 autofluorescence 1262.20 intercellular spacing 1262.20

  • This dataset provides georeferenced polygon vectors of individual tree canopy geometries for dryland areas in West African Sahara and Sahel that were derived using deep learning applied to 50 cm resolution satellite imagery. More than 1.8 billion non-forest trees (i.e., woody plants with a crown size over 3 m2) over about 1.3 million km2 were identified from panchromatic and pansharpened normalized difference vegetation index (NVDI) images at 0.5 m spatial resolution using an automatic tree detection framework based on supervised deep-learning techniques. Combined with existing and future fieldwork, these data lay the foundation for a comprehensive database that contains information on all individual trees outside of forests and could provide accurate estimates of woody carbon in arid and semi-arid areas throughout the Earth for the first time.

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    This data set contains the temperature values at the position of 557 Pardosa saltans spiders, measured each minute during 90 minutes in a laboratory thermal gradient. Additionnal information on sex, development stage and morphology is provided for each individual. For details see Cabon et al 2023 in Journal of Thermal Biology: https://www-sciencedirect-com.passerelle.univ-rennes1.fr/science/article/pii/S0306456523002474 https://doi.org/10.1016/j.jtherbio.2023.103706

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    Title: InterActic : A millennium of interaction between societies and environments in Arctic and sub-Arctic regions (Canada and Greenland) Abstract The InterArctic project focuses on vulnerability, resilience and adaptation of northern societies facing global change. The rapid current warming of Arctic and Subarctic climates has already produced many changes in the social, economic and cultural behavior of the populations inhabiting these regions and more changes are expected to come. Few of the changes are considered to be positive or not disturbing the fragile balance between human and the environment. Populations of these areas have to face these challenges, and in this context, looking at the past provides the opportunity to document the complex relationships between climate, ecology and human societies, which may provide deeper understanding into ways of better facing the future. The chronological frame of the project encompasses the last millennium, a well-documented period by both ice core data and historical archives. The study area includes Eastern Canada (Nunavik, Nunavut and Nunatsiavut) and Greenland (South and North). Around 1000 years cal. AD, some of these areas witnessed the meeting between European farmers coming from Scandinavia, and hunters-fishers arriving from Beringia. Today, these two lifestyles are still coexisting, with farming in South Greenland, and hunters/gatherers/fishers in Nunavik, Nunavut, Labrador coast and Greenland. Within these study areas, our aim is to document 1000 years of interactions between Thule/Inuit people, Norse settlers and their environment, through an interdisciplinary approach exploiting different kinds of natural archives. The use of pedo-sedimentary archives (lakes, peat deposits, cryosols, anthrosols) and palaeoenvironmental multiproxy analyses will highlight landscape evolution, climatic and anthropogenic forcings upon ecological processes. Archaeological sites, and more specifically archaeological soils, ecofacts and artefacts, will give precious information about the nature of these interactions. The complementary anthropological/cultural approach will focus on human memory, perception, practices and prospects of environmental and social changes, archaeological heritage and past settlement location choices, of six communities in Greenland and Canada. These issues will be explored in an interdisciplinary work through open interviews and co-design workshops bringing Inuit elders and youth together with project researchers. Coproduced knowledge (blending traditional and scientific), including Inuit visual documentation of the community changes and the writing of science fiction narratives, as well as cognitive maps (Inuit internal representation), will then be shared through innovative educational projects such as an interactive web platform designed to share project results, involving local partners in Greenland and Canada as well as French secondary schools and universities. Keywords: Arctic, Subarctic, Greenland, Nunavik, Labrador-Nunatsiavut, Canada, Norse, Farming, Interaction Human-environment, Thule, Inuit, Natural-archives, Archaeological settlements, Archaeological-artefacts, Raw-materials, Climate, Environment, Landscape, Ecosytems, Biodiversity, Global-changes, Social-changes, Flora, Fauna, Soils, PalenvDNA, Perception, Memory, Heritage, Holocene, Last-Millenium

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    [résumé à traduire en anglais] Jeu de données (observations, prélèvements et analyses) sur les bois flottés, issus de la campagne de terrain de 2018 sur le site n°16, South Aulatsivik (HdCi_20). Les observations et les prélèvements (tranches/galettes de bois) sont organisés selon des quadrats [protocole à compléter si nécessaire]; la liste des points définissant ces quadrats se trouve dans le fichier 'Note_terrain_Nain_2018.xls'; ainsi que la liste des bois (échantillons) 'Récolte driftwood selon quadrats'. [localisations géographiques à revoir avec resp. projet]. Observations: volume, forme, état de conservation, photographies [à revoir avec resp. projet]. Prélèvements: a priori 111 échantillons 'bois' ('Driftwood'), plus quelques (3?) 'Old Driftwood' [à vérifier, carnet de terrain]; localisés au Canada. Analyses prévues: identification taxonomique, dendrochronologie, géochimie, C14 (pour les 'VDR'), [...]. [Mots-clés à compléter] Etendue_geo : (du site 16) 56°38'24.09"N;61°23'3.21"W; 56°36'2.95"N;61°22'56.89"W; 56°36'2.69"N;61°27'28.85"W; 56°38'29.91"N;61°22'40.60"W Liens et documents associés [à compléter] : liste des échantillons, des quadrats, description du protocole dans publis, liste des photos, couche carto [à compléter : revoir avec resp.projet] Keywords: Arctic, Subarctic, Greenland, Nunavik, Labrador-Nunatsiavut, Canada, Norse, Farming, Intercation Human-environment, Thule, Inuit, Natural-archives, Archaeological settlements, Archaeological-artefacts, Raw-materials, Climate, Environment, Landscape, Ecosytems, Biodiversity, Global-changes, Social-changes, Flora, Fauna, Soils, PalenvDNA, Perception, Memory, Heritage, Holocene, Last-Millenium

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    [résumé à traduire en anglais] Jeu de données (observations, prélèvements et analyses) sur les bois flottés, issus de la campagne de terrain de 2018 sur le site n°16, South Aulatsivik (HdCi_20). Les observations et les prélèvements (tranches/galettes de bois) sont organisés selon des quadrats [protocole à compléter si nécessaire]; la liste des points définissant ces quadrats se trouve dans le fichier 'Note_terrain_Nain_2018.xls'; ainsi que la liste des bois (échantillons) 'Récolte driftwood selon quadrats'. [localisations géographiques à revoir avec resp. projet]. Observations: volume, forme, état de conservation, photographies [à revoir avec resp. projet]. Prélèvements: a priori 111 échantillons 'bois' ('Driftwood'), plus quelques (3?) 'Old Driftwood' [à vérifier, carnet de terrain]; localisés au Canada. Analyses prévues: identification taxonomique, dendrochronologie, géochimie, C14 (pour les 'VDR'), [...]. [Mots-clés à compléter] Etendue_geo : (du site 16) 56°38'24.09"N;61°23'3.21"W; 56°36'2.95"N;61°22'56.89"W; 56°36'2.69"N;61°27'28.85"W; 56°38'29.91"N;61°22'40.60"W Liens et documents associés [à compléter] : liste des échantillons, des quadrats, description du protocole dans publis, liste des photos, couche carto [à compléter : revoir avec resp.projet] Keywords: Arctic, Subarctic, Greenland, Nunavik, Labrador-Nunatsiavut, Canada, Norse, Farming, Intercation Human-environment, Thule, Inuit, Natural-archives, Archaeological settlements, Archaeological-artefacts, Raw-materials, Climate, Environment, Landscape, Ecosytems, Biodiversity, Global-changes, Social-changes, Flora, Fauna, Soils, PalenvDNA, Perception, Memory, Heritage, Holocene, Last-Millenium

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    [résumé à traduire en anglais] Jeu de données (observations, prélèvements et analyses) sur les bois flottés, issus de la campagne de terrain de 2019 sur le site n°16, South Aulatsivik (HdCi_20). En 2019 (contrairement à 2018), chaque prélèvement a fait l'objet d'un point GPS; la méthode des quadrats n'a pas été utilisée en 2019 pour la localisation des driftwood. Observations: volume, forme, état de conservation, photographies [liste des photos, à voir avec Y.Rantier]. Prélèvements: La numérotation des prélèvements de 2019 sont numérotés de 200 à 255. L’échantillonnage de 2019 est un complément de celui de 2018 (pas réplicat). La localisation est distincte. Le N° 20 avait été oublié en 2018. Analyses prévues: identification taxonomique, dendrochronologie, géochimie, C14 (pour les 'VDR'), [...]. [Mots-clés à compléter] Etendue_geo : (du site 16) 56°38'24.09"N;61°23'3.21"W; 56°36'2.95"N;61°22'56.89"W; 56°36'2.69"N;61°27'28.85"W; 56°38'29.91"N;61°22'40.60"W Liens et documents associés [à compléter] : liste des échantillons, des quadrats, description du protocole dans publis, liste des photos, couche carto [à compléter : infos tech SIG, Y.Rantier] Keywords: Arctic, Subarctic, Greenland, Nunavik, Labrador-Nunatsiavut, Canada, Norse, Farming, Intercation Human-environment, Thule, Inuit, Natural-archives, Archaeological settlements, Archaeological-artefacts, Raw-materials, Climate, Environment, Landscape, Ecosytems, Biodiversity, Global-changes, Social-changes, Flora, Fauna, Soils, PalenvDNA, Perception, Memory, Heritage, Holocene, Last-Millenium

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    This metadata describes the field session data collected on the site of Nain, Labrador in Canada, between 2018 and 2021 for the project InterArctic-Enchainec. Keywords: Arctic, Subarctic, Greenland, Nunavik, Labrador-Nunatsiavut, Canada, Norse, Farming, Intercation Human-environment, Thule, Inuit, Natural-archives, Archaeological settlements, Archaeological-artefacts, Raw-materials, Climate, Environment, Landscape, Ecosytems, Biodiversity, Global-changes, Social-changes, Flora, Fauna, Soils, PalenvDNA, Perception, Memory, Heritage, Holocene, Last-Millenium