AI as Research Assistant: Upscaling Content Analysis to Identify Patterns of ...
ED4 Hortense SERRET
1. Business Sites Gardens as opportunity
for Urban Biodiversity ?
Hortense SERRET
September, 26th
Doctorat financé par
Département Développement Durable d’
4. Research questions
o How are Business Sites Gardens spatially organized and what kind of
contribution do they have for urban connectivities ?
o What are their ecological features ?
Astrance
o How employees see those Gardens ?
4
5. What is a « Business Site Garden » ?
o Every green spaces around business sites buildings
8 700 ha in Paris region
Very heterogeneous sizes, until more than 100 ha
Astrance
15 % of housing gardens areas
23 % of parks and gardens
Double of wasteland surfaces
5
8. Business sites gardens areas per urbanization
classes (%)
Astrance
Proportion of business site gardens per
urbanization classes
3
2,5
2
1,5
1
0,5
0
Urban center
Dense urban
Suburban
Périurban
8
10. How Business Sites Gardens contribute to urban
connectivities ?
o Graph theory
Astrance
• Nodes = Habitat patches
• Links
Leat-cost path
• Dispersion capacity of a model species
o Landscape metrics
• Probability of Connectivity, PC (Saura et Pascual-Hortual 2007)
• Decomposition of PC (Saura et Pascal-Hortual 2010)
10
11. How Business Sites Gardens contribute to urban
connectivities ?
o Low contribution at global scale for global connectivities
o High contribution at local scale for global connectivities in
suburban areas
Astrance
• Recent urbanisation with Activitiy Parks organisation
o Low contribution in area for connectivities compared to other
green spaces (parks, housing gardens)
o Strategical location for connectivities : 10 % of business sites
highly contribute to coherence of connectivities
11
12. Field observations
o A study of 56 business green spaces
o Two areas
•
Astrance
•
« South » area : high density of urbanisation, high
land pression, few connectivities with other green
spaces
« Cergy » area : bigger green spaces, more open
landscape
o 28 business sites on each area
12
14. Contribution for Conservation and Fonctionnality
of urban biodiversity
o Conservation
Cynoglossum
officinal
Astrance
• Plants
94,2 % of indigenous species
14 % of urbanophobic plants
10 % of species are considered ‘in
regression’ ou ‘vulnerable ‘ in the region
• Birds
Presence of birds species which
population are declining at national scale
o Fonctionnality
• 70 % of entomogam plant species
• Extensive management promotes butterflies
sensitive to urbanisation
• Contribution to bats activity
• Presence of birds considered as indicators for
green connectivities
Achusa arvensis
Carduelis cannabina
Pyrrhula pyrrhula
Maniola jurtina
14
16. A project to involve compagnies in the
promotion of biodiversity on their sites
o Promotion of extensive management on
business sites
Astrance
o Biodiversity monitoring to evaluate efficiency of
practices changes
o Partnership with scientific community to share
data
16
17. Thank you !
Any questions ?
hortense.serret@gmail.com
Doctorat financé par
Département Développement Durable d’
