Résultat de la recherche
4 recherche sur le mot-clé
'fragmentation de l'habitat' 
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Partager le résultat de cette rechercheMonitoring ecological consequences of efforts to restore landscape-scale connectivity / David Watson in Biological conservation, vol. 206 (Février 2017)
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Titre : Monitoring ecological consequences of efforts to restore landscape-scale connectivity Type de document : texte imprimé Auteurs : David Watson (David M.), Auteur ; Veronica Doerr (Veronica A. J.), Auteur ; Don Driscoll (Don A), Auteur ; Rodney van der Ree, Auteur Année de publication : 2017 Article en page(s) : pp. 201-209 Langues : Anglais (eng) Mots-clés : fragmentation de l'habitat dispersion restauration génétique de la conservation gestion adaptative outil d'aide à la décision corridor écologique Résumé : "Managing and restoring connectivity that enables wildlife movement through landscapes is the primary approach to reduce harmful effects of habitat loss and fragmentation. Improved connectivity is also increasingly invoked as a strategy to mitigate negative impacts of climate change by enabling species to track preferred environments and maintain evolutionary processes. Although initiatives to improve connectivity using restoration are becoming commonplace, we do not know how successful these actions are, nor which mechanisms underlie biotic responses.
Most ecological monitoring focuses on site condition or quality rather than those landscape-scale processes that connectivity is intended to facilitate. To assess biodiversity responses to connectivity initiatives, we argue that new monitoring approaches are needed that distinguish the roles of connectivity restoration from those of habitat augmentation or improvement.
To address this critical gap, we developed a conceptual model of the hypothesised roles of connectivity in complex landscapes and a linked framework to guide design of connectivity monitoring approaches in an adaptive management context. We demonstrate that integrated monitoring approaches using complementary methods are essential to reveal whether long-term landscape-scale goals are being achieved, and to determine whether connectivity management and restoration are the mechanisms responsible.
We summarize a real-world example of applying our approach to assist government develop a monitoring plan for a large-scale connectivity conservation initiative in the Australian Capital Territory. As well as highlighting the utility of the framework to help managers make informed choices about monitoring, this example illustrates the difficulties of convincing funding bodies to include monitoring in project budgets and the questions more likely to be answered with limited funds." (source : auteur)Type de publication : périodique Référence biblio : Watson D., Doerr V., Driscoll D., van der Ree R., 2017 - Monitoring ecological consequences of efforts to restore landscape-scale connectivity. Biological conservation, 206 : 201-209. ID PMB : 65419 DOI : 10.1016/j.biocon.2016.12.032 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65419
in Biological conservation > vol. 206 (Février 2017) . - pp. 201-209[article]Exemplaires(0)
Disponibilité aucun exemplaire The role of semi-open habitats as dispersal corridors for plant species of woodlands and open habitats / Eliane Travers in Applied Vegetation Science, vol. 24, n°1 (Année 2021)
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Titre : The role of semi-open habitats as dispersal corridors for plant species of woodlands and open habitats Auteurs : Eliane Travers, Auteur ; Witja Till Pitz, Auteur ; Andreas Fichtner, Auteur ; Diethart Matthies, Auteur ; Werner Härdtle, Auteur Année de publication : 2021 Article en page(s) : e12526 Langues : Anglais (eng) Catégories : [habitats/milieux] 3 - Landes, fruticées et prairies
[Thèmes] Conservation
[Thèmes] PâturageMots-clés : couloir de dispersion fragmentation de l'habitat dispersion des plantes gestion Résumé : "Semi-open corridors have the potential to connect patches of open habitats and to a lesser extent also of woodlands without creating new barriers for either habitat type. Thus, semi-open corridors may counteract habitat fragmentation effects and are a promising tool for biodiversity conservation, particularly in fragmented pasture landscapes." (source : auteurs) Type de publication : périodique Référence biblio : Travers E., Till Pitz W., Fichtner A., Matthies D., Härdtle W., 2021 - The role of semi-open habitats as dispersal corridors for plant species of woodlands and open habitats. Applied Vegetation Science, 24 (1) : e12526. ID PMB : 72150 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/avsc.12526 Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=72150
in Applied Vegetation Science > vol. 24, n°1 (Année 2021) . - e12526[article]Exemplaires(0)
Disponibilité aucun exemplaire Factors threatening grassland specialist plants - A multi-proxy study on the vegetation of isolated grasslands / Balázs Deák in Biological conservation, vol. 204, n°B (Décembre 2016)
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Titre : Factors threatening grassland specialist plants - A multi-proxy study on the vegetation of isolated grasslands Type de document : texte imprimé Auteurs : Balázs Deák, Auteur ; Orsolya Valkó, Auteur ; Péter Török, Auteur ; Béla Tóthmérész, Auteur Année de publication : 2016 Article en page(s) : pp. 255-262 Langues : Anglais (eng) Catégories : [ZG] Hongrie
[habitats/milieux] 3 - Landes, fruticées et prairies
[habitats/milieux] 8 - Terres agricoles et paysages artificielsMots-clés : schéma agro-environnemental fragmentation de l'habitat Kurgan steppe Résumé : "Land use changes have resulted in the loss and isolation of semi-natural habitats worldwide. In intensively used agricultural landscapes the remnants of natural flora only persist in small habitat islands embedded in a hostile matrix. In the steppe zone burial mounds, so-called kurgans, have the potential to preserve the natural flora and act as local biodiversity hotspots. Exploration of the factors driving biodiversity in isolated habitat fragments is crucial for understanding the ecological processes shaping their vegetation and for designing effective strategies for their protection. We sampled the vegetation of 44 isolated kurgans in East-Hungary and studied the effects of habitat area, slope, recent disturbance, past destruction and the level of woody encroachment on the species richness and cover of grassland specialist and problem species (competitor weedy species). We used model selection techniques and linear models for testing relevant factors affecting specialist species in grassland fragments. We found that the biodiversity conservation potential of kurgans is supported by their steep slopes, which provide adequate habitat conditions and micro-climate for steppic specialist plant species. Specialist species are threatened both by recent disturbances and encroachment of alien woody species, especially black locust. Factors supporting specialist species suppressed problem species by providing unfavourable environmental conditions and putting them at a competitive disadvantage. We identified that woody encroachment and current disturbances affect the vast majority of kurgans, posing a serious threat to grassland specialist species. Thus, there is an urgent need to integrate active conservation measures into the current passive protection of kurgans." (source : auteurs) Type de publication : périodique Référence biblio : Deák B., Valkó O., Török P., Tóthmérész B., 2016 - Factors threatening grassland specialist plants - A multi-proxy study on the vegetation of isolated grasslands. Biological conservation, 204 : 255-262. ID PMB : 65414 DOI : 0.1016/j.biocon.2016.10.023 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65414
in Biological conservation > vol. 204, n°B (Décembre 2016) . - pp. 255-262[article]Exemplaires(0)
Disponibilité aucun exemplaire High ecosystem service delivery potential of small woodlands in agricultural landscapes / Alicia Valdés in Journal of Applied Ecology, vol. 57, n°1 (Année 2020)
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Titre : High ecosystem service delivery potential of small woodlands in agricultural landscapes Type de document : texte imprimé Auteurs : Alicia Valdés, Auteur ; Jonathan Lenoir, Auteur ; Pieter De Frenne, Auteur ; Emilie Andrieu, Auteur ; Jörg Brunet, Auteur ; Olivier Chabrerie, Auteur ; Sara Cousins, Auteur ; Marc Deconchat, Auteur ; Pallieter De Smedt, Auteur ; Martin Diekmann, Auteur ; Steffen Ehrmann, Auteur ; Emilie Gallet-Moron, Auteur ; Stefanie Gärtner, Auteur ; Brice Giffard, Auteur ; Karin Hansen, Auteur ; Martin Hermy, Auteur ; Annette Kolb, Auteur ; Vincent Le Roux, Auteur ; Jaan Liira, Auteur ; Jessica Lindgren, Auteur ; Ludmilla Martin, Auteur ; Tobias Naaf, Auteur ; Taavi Paal, Auteur ; Willem Proesmans, Auteur ; Michael Scherer-Lorenzen, Auteur ; Monika Wulf, Auteur ; Kris Verheyen, Auteur ; Guillaume Decocq, Auteur Année de publication : 2020 Article en page(s) : pp. 4-16 Langues : Anglais (eng) Catégories : [habitats/milieux] 4 - Forêts Mots-clés : changement climatique paysage agricole Anthropocène biodiversité service écosystémique fragmentation de l'habitat biogéographie insulaire Résumé : "Synthesis and applications. Large, ancient woodlands host high levels of biodiversity and can therefore deliver a number of ecosystem services. In contrast, smaller woodlands in agricultural landscapes, especially ancient woodlands, have a higher potential to deliver multiple ecosystem services on a per area basis. Despite their important contribution to agricultural landscape multifunctionality, small woodlands are not currently considered by public policies. There is thus an urgent need for targeted policy instruments to ensure their adequate management and future conservation in order to either achieve multiservice delivery at high levels or to maximize the delivery of specific ecosystem services." (source : auteurs) Type de publication : périodique Référence biblio : Valdés A., Lenoir J., De Frenne P., Andrieu E., Brunet J., Chabrerie O., Cousins S., Deconchat M., De Smedt P., Diekmann M., Ehrmann S., Gallet-Moron E., Gärtner S., Giffard B., Hansen K., Hermy M., Kolb A., Le Roux V., Liira J., Lindgren J., Martin L., Naaf T., Paal T., Proesmans W., Scherer-Lorenzen M., Wulf M., Verheyen K., Decocq G., 2020 - High ecosystem service delivery potential of small woodlands in agricultural landscapes. Journal of Applied Ecology, 57 (1) : 4-16. ID PMB : 69532 DOI : 10.1111/1365-2664.13537 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69532
in Journal of Applied Ecology > vol. 57, n°1 (Année 2020) . - pp. 4-16[article]Exemplaires(0)
Disponibilité aucun exemplaire

