Biodiversité

This study used data from 160 urban sites in England, collected by volunteers taking part in the Wider Countryside Butterfly Survey, in which BTO is a partner. Butterflies were chosen as the species group to investigate because they can be sensitive to small changes in habitat, are commonly seen in urban settings, and can reflect the responses of other insects.

The detrimental effects of environmental change on human and non-human diversity are acutely manifested in urban environments. While urban greenspaces are known to mitigate these effects and support functionally diverse ecological communities, evidence of the ecological outcomes of urban greening remains scarce.

We use a longitudinal observational design to provide empirical evidence of positive ecological changes brought about by greening actions.

Sur ce site, vous trouverez une liste de bases de données, une bibliographie et l'accès aux données nationales d'artificialisation des sols.

Urbanization is an important driver of global insect decline. Yet, recent studies have demonstrated the potential of greenspaces in cities to promote biodiversity conservation. One of many factors negatively affecting arthropods in urban areas are unsuitable habitats, as non-woody greenspaces predominantly consist of manicured lawns. Maintenance practices such as high mowing frequencies, can have direct and indirect negative impacts on the local flora and fauna.

Pour aider les collectivités à construire leur stratégie et à gérer le foncier, le Cerema a mis au point différents outils d'observation et d'analyse qui sont mis à disposition des acteurs.

Biodiversité, aménagement urbain, morphologie : le PUCA, l’Office français de la biodiversité
et la Direction générale de l’aménagement du logement et de la nature se sont unis pour solliciter des équipes associant chercheurs et acteurs de l’aménagement, afin qu’elles contribuent à favoriser notre compréhension de l’impact de la forme urbaine sur la biodiversité, à l’échelle de nos villes occidentales.
Six équipes, sélectionnées à l’issue d’un appel à projets de recherche lancé en février 2020, nous présentent aujourd’hui les résultats de leurs travaux de recherche.

This dataset is the result of a systematic mapping of the application of nature-based solutions (NbS) to climate change adaptation in urban areas across the world. We screened 823 potential urban NbS to climate adaptation, which resulted in the inclusion of 216 interventions worldwide from 130 cities in 55 countries within our dataset. We analysed each of the NbS according to key characteristics in terms of how these interventions are helping cities confront the grave climate change, biodiversity, and related social challenges they are facing.

There is a scientific consensus on the need for spatially detailed information on urban landscapes at a global scale. These data can support a range of environmental services, since cities are places of intense resource consumption and waste generation and of concentrated infrastructure and human settlement exposed to multiple hazards of natural and anthropogenic origin. In the face of climate change, urban data are also required to explore future urbanization pathways and urban design strategies in order to lock in long-term resilience and sustainability, protecting cities from future decisions that could undermine their adaptability and mitigation role.