MartinProulxVellendEtAl2021
Référence
Martin, C.A., Proulx, R., Vellend, M., Fahrig, L. (2021) How the relationship between vegetation cover and land-cover variance constrains biodiversity in a human dominated world. Landscape Ecology, 36(11):3097-3104. (Scopus 
)
Résumé
Context: Alteration of natural vegetation cover across the landscape drives biodiversity changes. Although several studies have explored the relationships between vegetation cover and species richness, as well as between land-cover variance and species richness, few have considered the non-independence of these two biodiversity drivers. Objectives: The goal of this perspective paper is to present theoretical and empirical relationships linking vegetation cover to land-cover variance at the landscape scale, and the implication of these relationships for species richness change along a gradient of increasing anthropization. Methods and results: We used simulated and empirical Normalized Difference Vegetation Index data to examine the generality of the relationship between vegetation cover and land-cover variance. Using the province of Québec (Canada) as a case study, our results show that decreasing vegetation cover captures the transition from landscapes with low land-cover variance (non-anthropized landscapes), to intermediate variance (agricultural landscapes), to high variance (urban landscapes). Conclusion: Based on this relationship between vegetation cover and land-cover variance, and assuming independent positive monotonic relationships between biodiversity and both of these drivers, we predict a unimodal relationship between species richness and anthropization. This suggests a threshold of anthropization beyond which the positive effects of land-cover variance no longer compensate for the negative effects of vegetation cover loss. Identifying these thresholds could be key to setting conservation targets at a landscape scale. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
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@ARTICLE { MartinProulxVellendEtAl2021,
AUTHOR = { Martin, C.A. and Proulx, R. and Vellend, M. and Fahrig, L. },
JOURNAL = { Landscape Ecology },
TITLE = { How the relationship between vegetation cover and land-cover variance constrains biodiversity in a human dominated world },
YEAR = { 2021 },
NOTE = { cited By 0 },
NUMBER = { 11 },
PAGES = { 3097-3104 },
VOLUME = { 36 },
ABSTRACT = { Context: Alteration of natural vegetation cover across the landscape drives biodiversity changes. Although several studies have explored the relationships between vegetation cover and species richness, as well as between land-cover variance and species richness, few have considered the non-independence of these two biodiversity drivers. Objectives: The goal of this perspective paper is to present theoretical and empirical relationships linking vegetation cover to land-cover variance at the landscape scale, and the implication of these relationships for species richness change along a gradient of increasing anthropization. Methods and results: We used simulated and empirical Normalized Difference Vegetation Index data to examine the generality of the relationship between vegetation cover and land-cover variance. Using the province of Québec (Canada) as a case study, our results show that decreasing vegetation cover captures the transition from landscapes with low land-cover variance (non-anthropized landscapes), to intermediate variance (agricultural landscapes), to high variance (urban landscapes). Conclusion: Based on this relationship between vegetation cover and land-cover variance, and assuming independent positive monotonic relationships between biodiversity and both of these drivers, we predict a unimodal relationship between species richness and anthropization. This suggests a threshold of anthropization beyond which the positive effects of land-cover variance no longer compensate for the negative effects of vegetation cover loss. Identifying these thresholds could be key to setting conservation targets at a landscape scale. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. },
AFFILIATION = { Chaire de Recherche du Canada en Intégrité Écologique, Centre de Recherche sur les Interactions Bassins Versants-Écosystèmes Aquatiques (RIVE), Université du Québec à Trois-Rivières, C.P. 500, Trois-Rivières, QC G9A 5H7, Canada; Département de Biologie, Université de Sherbrooke, 2500 Boulevard de l’Université, Sherbrooke, QC J1K 2R1, Canada; Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada },
AUTHOR_KEYWORDS = { Biodiversity; Environmental heterogeneity; Landscape composition; Landscape structure; Species richness; Vegetation cover },
DOCUMENT_TYPE = { Article },
DOI = { 10.1007/s10980-021-01312-9 },
SOURCE = { Scopus },
URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112396023&doi=10.1007%2fs10980-021-01312-9&partnerID=40&md5=2fd99d20db2b4ec41729d914e6347d11 },
}
