Quantifying Long-Term Urban Grassland Dynamics : Biotic Homogenization and Extinction Debts

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http://hdl.handle.net/10138/325002

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du Toit , M J , Kotze , D J & Cilliers , S S 2020 , ' Quantifying Long-Term Urban Grassland Dynamics : Biotic Homogenization and Extinction Debts ' , Sustainability , vol. 12 , no. 5 , 1989 . https://doi.org/10.3390/su12051989

Titel: Quantifying Long-Term Urban Grassland Dynamics : Biotic Homogenization and Extinction Debts
Författare: du Toit, Marie J.; Kotze, D. Johan; Cilliers, Sarel S.
Upphovmannens organisation: Ecosystems and Environment Research Programme
Helsinki Institute of Sustainability Science (HELSUS)
Helsinki Institute of Urban and Regional Studies (Urbaria)
Fifth Dimension - Vegetated roofs and walls in urban areas
Urban Ecosystems
Datum: 2020-03-01
Språk: eng
Sidantal: 17
Tillhör serie: Sustainability
ISSN: 2071-1050
DOI: https://doi.org/10.3390/su12051989
Permanenta länken (URI): http://hdl.handle.net/10138/325002
Abstrakt: Sustainable urban nature conservation calls for a rethinking of conventional approaches. Traditionally, conservationists have not incorporated the history of the landscape in management strategies. This study shows that extant vegetation patterns are correlated to past landscapes indicating potential extinction debts. We calculated urban landscape measures for seven time periods (1938-2019) and correlated it to three vegetation sampling events (1995, 2012, 2019) using GLM models. We also tested whether urban vegetation was homogenizing. Our results indicated that urban vegetation in our study area is not currently homogenizing but that indigenous forb species richness is declining significantly. Furthermore, long-term studies are essential as the time lags identified for different vegetation sampling periods changed as well as the drivers best predicting these changes. Understanding these dynamics are critical to ensuring sustainable conservation of urban vegetation for future citizens.
Subject: time lags
conservation
landscape history
urban vegetation
legacy effects
HIGHLAND SOURVELD GRASSLAND
PLANT-SPECIES RICHNESS
LAND-USE
LOCAL EXTINCTION
VACANT LOTS
TIME LAGS
BIODIVERSITY
LANDSCAPE
DIVERSITY
VEGETATION
1172 Environmental sciences
1181 Ecology, evolutionary biology
Referentgranskad: Ja
Licens: cc_by
Användningsbegränsning: openAccess
Parallelpublicerad version: publishedVersion


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