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1Academic Journal
المؤلفون: Niittynen, Pekka, Heikkinen, Risto K., Luoto, Miska
مصطلحات موضوعية: remote sensing, species distribution modeling, microclimate, winter ecology, alpine mountain, decreasing snow covers, functional composition, diversity, Arctic, Arctic tundra, Arctic landscape, Arctic species, tundra, tundra vegetation, tundra biome, tundra region, tundra communities, snow, snow cover duration, evolution of snow conditions, cold climate, biotic communities, plants, plant communities, tall plants, large leaves, faster resource acquisition, plot-scale vegetation data, predicting biodiversity patterns, ecosystem processes
جغرافية الموضوع: Arktinen alue, Arktis
وصف الملف: application/pdf
Relation: Proceedings of the National Academy of Sciences of the United States of America; 117(35): 21480-21487; Decreasing snow cover alters functional composition and diversity of Arctic tundra. Pekka Niittynen, Risto K. Heikkinen, Miska Luoto. Proceedings of the National Academy of Sciences Sep 2020, 117 (35) 21480-21487. https://doi.org/10.1073/pnas.2001254117; https://doi.org/10.1073/pnas.2001254117; Suomen ympäristökeskus; http://hdl.handle.net/10138/336012
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2
المؤلفون: Miska Luoto, Risto K. Heikkinen, Pekka Niittynen
المساهمون: University of Helsinki, Department of Geosciences and Geography
المصدر: Proceedings of the National Academy of Sciences of the United States of America
مصطلحات موضوعية: 0106 biological sciences, pienilmasto, tundra, mediating climate change impacts, 010504 meteorology & atmospheric sciences, plot-scale vegetation data, Biodiversity, 01 natural sciences, rapid climate change, remote sensing, Arctic, Arctic species, SPECIES DISTRIBUTION, lack of research, kylmä ilmasto, tundra region, bioottiset yhteisöt, tundra vegetation, PRODUCTIVITY, Ecology, Arctic Regions, Earth, Cold Temperature, climate change, machine learning, tundra biome, lämpeneminen, mallintaminen, snow, species distribution modeling, ECOLOGY, diversity, vähenevä lumipeite, Arctic vegetation−ecosystem models, monimuotoisuus, kasvit, Ecosystem, Arctic tundra, ecosystem processes, tundra communities, 15. Life on land, ilmastonmuutokset, Snow, kasviyhteisöt, FRAMEWORK, biotic homogenization, different scenarios, BIODIVERSITY, Arctic landscape, biodiversiteetin ennustaminen, ilmastonmuutoksen hillitseminen, PLANT TRAITS, ihmisen vaikutus, microclimate, winter ecology, responsiveness, machine learning method, arktiset lajit, faster resource acquisition, COMMUNITY COMPOSITION, nopea ilmastonmuutos, predicting biodiversity patterns, functional composition, lajien levinneisyysmallinnus, role of snow in tundra vegetation models, arktinen maisema, tall plants, kookkaat lehdet, Multidisciplinary, lacking research, plants, Temperature, cold climate, talviekologia, decreasing snow covers, Biological Sciences, tundran rehevöityminen, koneoppimismetodit, koneoppiminen, spatiaalisen heterogeenisyyden menetys, Seasons, alppivuori, 1171 Geosciences, snow cover duration, human impact, warming, perturbation, DATABASE, Climate change, 010603 evolutionary biology, biotic communities, tundran biomi, modelling, ekosysteemiprosessit, rehevöitymisdata, lumiolosuhteiden evoluutio, 0105 earth and related environmental sciences, tutkimuksen vajaavaisuus, arktinen tundra, bioottinen homogenisaatio, evolution of snow conditions, large leaves, trait composition, Global warming, spatial heterogeneity loss, lumipeitteen kesto, SHIFTS, Plant community, lumi, Tundra, plant communities, Plant Leaves, korkeat kasvit, 13. Climate action, tutkimuksen vähyys, alpine mountain, machine learning methods, Environmental science, kaukokartoitus, VEGETATION, tundrayhteisöt
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3
المؤلفون: Brigitte Durand, Anne-Lise Boixel, Laurent Huber, Sébastien Saint-Jean, Claude de Vallavieille-Pope, Tiphaine Vidal
المساهمون: Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, BIOlogie et GEstion des Risques en agriculture (BIOGER), AgroParisTech-Institut National de la Recherche Agronomique (INRA), ANR-13-AGRO-0008,WHEATAMIX,Augmenter la diversité génétique au sein des parcelles de blé pour renforcer la multifonctionnalité et la durabilité de la production dans le Bassin Parisien(2013)
المصدر: Agricultural and Forest Meteorology
Agricultural and Forest Meteorology, Elsevier Masson, 2017, 246, pp.154-161. ⟨10.1016/j.agrformet.2017.06.014⟩مصطلحات موضوعية: 0106 biological sciences, Canopy, short susceptible cultivar was used. The resistant companion was either short (homogeneous) or tall (heterogeneous). Two proportions of resistant cultivar were tested in homogenous mixture. Mixtures were compared to pure stands of component cultivars. The level of resistance of each cultivar was assessed through disease measurements in pure stand. A diversity of canopy architecture was obtained at the flowering stage: the leaf area index ranged from 2.2 to 4.4 m2/m2 and flag leaf insertion height from 0.65 m (standard height) to 1.20 m (tall plants). Spore fluxes were measured during two rain events and microclimate variables including air temperature, could provide a strategy to enhance disease reduction in cultivar mixtures in the case of splash-dispersed diseases, Atmospheric Science, which led to a microclimate favorable to disease development. Leaf wetness duration was in fact longer in the pure stand constituted of standard height resistant plants, Microclimate, [SDV.SA.AGRO]Life Sciences [q-bio]/Agricultural sciences/Agronomy, Context (language use), whereas their architecture is rarely taken into account. However, Plant disease resistance, Biology, canopy architecture has an impact on spore dispersal and microclimate, relative humidity and leaf wetness duration were recorded from the booting stage onwards. Disease assessments were carried out weekly in mixtures and pure stands. Disease on susceptible plants was significantly lower in heterogeneous mixtures than in pure stands. In homogeneous mixtures, 01 natural sciences, disease reduction was similar. On the other hand, respectively. Our results suggest that the impact of canopy architecture on microclimate and spore dispersal can significantly contribute to the reduction of disease propagation in cultivar mixtures. We therefore suggest that taking cultivar architecture into account, caused by Zymoseptoria tritici. Each cultivar mixture was composed of a susceptible and a resistant cultivar. A single, spore dispersal and the propagation of splash-dispersed disease, Cultivar, Leaf area index, which had the densest canopy. In the two homogeneous mixtures that differed by the proportion of resistant plants, Leaf wetness, 2. Zero hunger, Global and Planetary Change, septoria tritici blotch, fungi, food and beverages, Forestry, 04 agricultural and veterinary sciences, 15. Life on land, Mixtures of cultivars with different disease resistance levels make it possible to manage plant disease in a context of fungicide reduction. The cultivars composing a mixture are often chosen for their contrasted disease resistance levels, Plant disease, [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy, a high proportion of resistant plants was associated with high canopy density, Agronomy, heterogeneous mixtures had a lower canopy density and lower spore fluxes than homogeneous mixtures. Compared to the susceptible pure stand, 040103 agronomy & agriculture, in addition to the level of resistance to disease, 0401 agriculture, forestry, and fisheries, both of which contribute to disease development. Disease spread by rain-splash occurs over short distances and is expected to be modulated by canopy structure. Our objective was to assess the impact of wheat cultivar mixtures that differ by their canopy architecture on crop microclimate, the area under the disease progress curve of susceptible plants was reduced by 68% in the heterogeneous mixture and by 32% and 34% in the homogeneous mixtures with 75% and 25% of resistant plants, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Agronomy and Crop Science, 010606 plant biology & botany
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4Academic Journal
المؤلفون: Vidal, Tiphaine, Boixel, Anne-Lise, Durand, Brigitte, de Vallavieille-Pope, Claude, Huber, Laurent, Saint-Jean, Sébastien
المساهمون: Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, BIOlogie et GEstion des Risques en agriculture (BIOGER), ANR-13-AGRO-0008,WHEATAMIX,Augmenter la diversité génétique au sein des parcelles de blé pour renforcer la multifonctionnalité et la durabilité de la production dans le Bassin Parisien(2013)
المصدر: ISSN: 0168-1923 ; Agricultural and Forest Meteorology ; https://agroparistech.hal.science/hal-01558824 ; Agricultural and Forest Meteorology, 2017, 246, pp.154 - 161. ⟨10.1016/j.agrformet.2017.06.014⟩.
مصطلحات موضوعية: short susceptible cultivar was used. The resistant companion was either short (homogeneous) or tall (heterogeneous). Two proportions of resistant cultivar were tested in homogenous mixture. Mixtures were compared to pure stands of component cultivars. The level of resistance of each cultivar was assessed through disease measurements in pure stand. A diversity of canopy architecture was obtained at the flowering stage: the leaf area index ranged from 2.2 to 4.4 m2/m2 and flag leaf insertion height from 0.65 m (standard height) to 1.20 m (tall plants). Spore fluxes were measured during two rain events and microclimate variables including air temperature, caused by Zymoseptoria tritici. Each cultivar mixture was composed of a susceptible and a resistant cultivar. A single, both of which contribute to disease development. Disease spread by rain-splash occurs over short distances and is expected to be modulated by canopy structure. Our objective was to assess the impact of wheat cultivar mixtures that differ by their canopy architecture on crop microclimate, spore dispersal and the propagation of splash-dispersed disease, septoria tritici blotch, canopy architecture has an impact on spore dispersal and microclimate, respectively. Our results suggest that the impact of canopy architecture on microclimate and spore dispersal can significantly contribute to the reduction of disease propagation in cultivar mixtures. We therefore suggest that taking cultivar architecture into account, whereas their architecture is rarely taken into account. However, relative humidity and leaf wetness duration were recorded from the booting stage onwards. Disease assessments were carried out weekly in mixtures and pure stands. Disease on susceptible plants was significantly lower in heterogeneous mixtures than in pure stands. In homogeneous mixtures, a high proportion of resistant plants was associated with high canopy density, which led to a microclimate favorable to disease development. Leaf wetness duration was in fact longer in the pure stand constituted of standard height resistant plants, which had the densest canopy. In the two homogeneous mixtures that differed by the proportion of resistant plants, disease reduction was similar. On the other hand, heterogeneous mixtures had a lower canopy density and lower spore fluxes than homogeneous mixtures. Compared to the susceptible pure stand, the area under the disease progress curve of susceptible plants was reduced by 68% in the heterogeneous mixture and by 32% and 34% in the homogeneous mixtures with 75% and 25% of resistant plants, Mixtures of cultivars with different disease resistance levels make it possible to manage plant disease in a context of fungicide reduction. The cultivars composing a mixture are often chosen for their contrasted disease resistance levels, in addition to the level of resistance to disease, could provide a strategy to enhance disease reduction in cultivar mixtures in the case of splash-dispersed diseases, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy, [SDV.SA.AGRO]Life Sciences [q-bio]/Agricultural sciences/Agronomy
Relation: PRODINRA: 406013; WOS: 000408782000015
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5
المؤلفون: S.E. van Wieren, Jan P. Bakker, Dries P. J. Kuijper, P. Beek
المصدر: Basic and Applied Ecology, 9(2), 126-134. ELSEVIER GMBH, URBAN & FISCHER VERLAG
Basic and Applied Ecology, 9(2), 126-134
Basic and Applied Ecology 9 (2008) 2مصطلحات موضوعية: Lepus europaeus, productivity, SUCCESSION, media_common.quotation_subject, COMPETITION, Forage, brown hares, Biology, barnacle geese, HARES LEPUS-EUROPAEUS, BARNACLE GEESE, Competition (biology), facilitation, SALT-MARSH, Abundance (ecology), Grazing, MANAGEMENT, BROWN HARES, tall plants, Ecology, Evolution, Behavior and Systematics, media_common, Biomass (ecology), Herbivore, Ecology, exclosures, PE&RC, biology.organism_classification, FACILITATION, succession, communities, salt marsh, hares lepus-europaeus, salt-marsh, Wildlife Ecology and Conservation, mountain hares, MOUNTAIN HARES, Festuca rubra, Juncus maritimus, COMMUNITIES, competition, management
وصف الملف: application/octet-stream; application/pdf
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6Academic Journal
المؤلفون: Kuijper, D. P. J., Beek, P., van Wieren, S.E., Bakker, J. P.
المصدر: Kuijper , D P J , Beek , P , van Wieren , S E & Bakker , J P 2008 , ' Time-scale effects in the interaction between a large and a small herbivore ' , Basic and Applied Ecology , vol. 9 , no. 2 , pp. 126-134 . https://doi.org/10.1016/j.baae.2006.08.008 ; ISSN:1439-1791
مصطلحات موضوعية: exclosures, Lepus europaeus, productivity, salt marsh, tall plants, HARES LEPUS-EUROPAEUS, BROWN HARES, BARNACLE GEESE, MOUNTAIN HARES, COMPETITION, SUCCESSION, FACILITATION, COMMUNITIES, MANAGEMENT, envir, geo