Know more

Our use of cookies

Cookies are a set of data stored on a user’s device when the user browses a web site. The data is in a file containing an ID number, the name of the server which deposited it and, in some cases, an expiry date. We use cookies to record information about your visit, language of preference, and other parameters on the site in order to optimise your next visit and make the site even more useful to you.

To improve your experience, we use cookies to store certain browsing information and provide secure navigation, and to collect statistics with a view to improve the site’s features. For a complete list of the cookies we use, download “Ghostery”, a free plug-in for browsers which can detect, and, in some cases, block cookies.

Ghostery is available here for free: https://www.ghostery.com/fr/products/

You can also visit the CNIL web site for instructions on how to configure your browser to manage cookie storage on your device.

In the case of third-party advertising cookies, you can also visit the following site: http://www.youronlinechoices.com/fr/controler-ses-cookies/, offered by digital advertising professionals within the European Digital Advertising Alliance (EDAA). From the site, you can deny or accept the cookies used by advertising professionals who are members.

It is also possible to block certain third-party cookies directly via publishers:

Cookie type

Means of blocking

Analytical and performance cookies

Realytics
Google Analytics
Spoteffects
Optimizely

Targeted advertising cookies

DoubleClick
Mediarithmics

The following types of cookies may be used on our websites:

Mandatory cookies

Functional cookies

Social media and advertising cookies

These cookies are needed to ensure the proper functioning of the site and cannot be disabled. They help ensure a secure connection and the basic availability of our website.

These cookies allow us to analyse site use in order to measure and optimise performance. They allow us to store your sign-in information and display the different components of our website in a more coherent way.

These cookies are used by advertising agencies such as Google and by social media sites such as LinkedIn and Facebook. Among other things, they allow pages to be shared on social media, the posting of comments, and the publication (on our site or elsewhere) of ads that reflect your centres of interest.

Our EZPublish content management system (CMS) uses CAS and PHP session cookies and the New Relic cookie for monitoring purposes (IP, response times).

These cookies are deleted at the end of the browsing session (when you log off or close your browser window)

Our EZPublish content management system (CMS) uses the XiTi cookie to measure traffic. Our service provider is AT Internet. This company stores data (IPs, date and time of access, length of the visit and pages viewed) for six months.

Our EZPublish content management system (CMS) does not use this type of cookie.

For more information about the cookies we use, contact INRA’s Data Protection Officer by email at cil-dpo@inra.fr or by post at:

INRA
24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

Menu Logo Principal Logo partenaire

LabEx BASC

The dynamics of biodiversity and ecosystem services during peri-urban development

Dynamiques
In peri-urban areas, home gardens are favorable environments for pollinating insects, this is one of the conclusions of the Dynamics project explained in a webinar.

Started with BASC funding in 2015, the Dynamiques project was co-financed by the Ile de France region (Program on and for regional development) and INRAE until 2020.
Project leader: Emmanuelle Baudry (ESE)
Partners

  •     in BASC: ECOSYS and EGCE
  •     non academic: Terre & Cité

The Dynamiques project is a (multidisciplinary) research program that studies the consequences of peri-urban development on ecosystems and the services they provide. The study is being conducted on the Saclay plateau, a territory with the double particularity of being in the process of urbanization following the development of the major scientific and technological pole of Paris Saclay, and of including more than 2000 hectares of agricultural land among the most fertile in the Île de France region. The general objective of the project is to produce knowledge that will contribute to a sustainable coexistence on the same territory between agriculture, the city and biodiversity, in connection with urban and agricultural development partners.
We describe below 2 of the results of the project; they concern pollination:

1st result. Using data from the SPIPOLL participatory science program, we showed that in peri-urban areas, home gardens are favorable environments for pollinating insects.
As part of Marine Levé's thesis, we analyzed all the pollinating insect observation data produced in Ile-de-France between 2010 and 2017 by the participatory science program SPIPOLL, Suivi Photographique des Insectes Pollinisateurs, i.e. 2470 20-minute observation sessions carried out by 261 participants. This showed that the diversity of pollinating insects in Ile-de-France was higher when the observation site was located in a garden and when this site was surrounded by a sufficient number of gardens, but was lower when this site was surrounded by a significant proportion of impervious surfaces such as buildings and roads². To understand why, watch the webinar (explanation at the 25 minute mark). These location effects vary among insect groups.

Dynamiques graphique résultat 1

Graphical summary of the study based on SPIPOLL data, showing at different spatial scales the effect on pollinator insect diversity of being in a garden, being surrounded by garden, or being surrounded by impervious surfaces like roads and buildings

.

.

papillon_Dynamiques

Butterflies are one of the insect groups favored by the presence of gardens in peri-urban areas. © Marine Levé, SPIPOLL

.

Result 2. In peri-urban areas, the pollination service is more effective in areas where urban and agricultural surfaces are intermingled than in purely urban or agricultural areas.
Many species of wild and cultivated plants depend on the so-called pollination service, i.e. the transport of pollen by pollinating insects, for their reproduction. 25 locations with varying proportions of urban and agricultural surfaces in their immediate environment were selected in the study area². In June, pots containing birdsfoot trefoil plants, a flower that needs insect pollinators to produce its fruits, were placed for 10 days in these 25 locations, and the number of fruits produced per inflorescence was counted. Birdsfoot trefoil that had been placed in an environment containing both agricultural and urban areas showed greater fruiting, indicating a more efficient pollination service, than those placed in purely urban or agricultural areas. This indicates that there is a complementarity between these two types of surfaces for pollinating insects. (Work conducted by Virginie Héraudet). To understand why, watch the webinar (explanation at the 19th minute 50 seconds).

Lotier_Dynamiques

Inflorescence of birdsfoot trefoil in flower and bearing 0, 1 or 3 fruits

.

Publications

> Leve, M., Baudry, E., & Bessa-Gomes, C. (2019). Domestic gardens as favorable pollinator habitats in impervious landscapes. Science of the total environment, 647, 420-430

Thesis

> Marine Levé's thesis "Domestic gardens, spaces of passage for pollinating insects and their encounters with the inhabitants", defended in 2018

Vulgarisation

> The pollination service in the peri-urban territory of the Saclay plateau: a positive interaction of agricultural and urbanized spaces, Webinar of the transversal group PSDR4 Urban-rural link: land, attractiveness and well-being, organized by Romain Melot and Mathieu Bonnefond, July 2020:

Webinaire PSDR- Dynamiques