Boar settled in to become the new “city dweller”.

Francois Le Lay, director of research at A’Urba, says this has until now been a “blind spot” in the research fields of urban planning agencies. The new issue of Bordeaux-Aquitaine urban planning agency CaMBo (the notebooks of the metropolis of Bordeaux) looked at “animals in the city”, which has been under-examined when we hear so much about the return of wild animals to the city. , continues Françoise Le Lay. So we wanted to dig. »

The wild boar is one species in particular that A’Urba leans on, even though “it’s not strictly considered a wild species, but we call it an urban dweller because it’s an adapted forest species,” he explains. Françoise Le Lay.

In 2015, a wild boar appeared in front of the Bordeaux city hall

Carole Marin, Ph.D., geography student, is interested in the relationship between animal dynamics and urban policymaking. In this issue of CaMBo, he presents the results of the naturalist portion of his study of human-animal interactions with boars, which have the ability to cause various wrecks or car collisions.

“Scientists in Barcelona have been investigating this issue for twenty years, in Bordeaux it dates back to 2005-2006, with a remarkable incident in 2015 when a wild boar appeared in front of it, which had clearly lost its way. town hall. This alerted the state authorities, and at that time the construction of works was carried out by the governing hunting federation, resulting in the urban hunting plan presented in 2019.” At the same time, “Since 2013. -In 2014, at the Parc des Jalles level, the Parc des Coteaux on the right bank and in the south of the city, administrative demolitions were carried out to “prevent” this invasion by slaughtering animals. »

In the city “they move faster to avoid people”

A telemetric monitoring project (with GPS collar) was created to better understand how wild boars function in an urban setting. “We tracked about ten adults and also ear-tagged about sixty young ones, allowing us to know where the animal was tagged with identification numbers and their average scatter. in a car crash or when taken hunting. »

The first lesson: “the initial assumptions were almost all false,” assures Carole Marin. “We know the traditions of the village boar, but we didn’t know how the animal worked in a very fragmented urban space. Some imagined that the animals came to shelter in urban areas during the hunting season before returning to forest areas. We have shown that animals caught in the suburbs of the Bordeaux conurbation live there year-round. These are sedentary animals, so I’m talking about urban boars, knowing that their habitats are shrinking. In return, they move faster to avoid running into people. »

Ecological corridors and metropolitan parks appeal to great wildlife

But these animals are not “wild pigs as some say”, but real pigs. They are always forest boars, essentially nocturnal, and we rarely see animals. »

The spatial analysis of the Bordeaux conurbation also favors their establishment in the city. “Unlike Berlin and Brussels, which are surrounded by forest areas, Bordeaux is directly connected to the city through ecological corridors. There is also the presence of large urban parks, nature reserves such as the landmark Bruges Reserve, and peri-urban agricultural projects that appeal to large fauna. » The analysis of presence indices shows that the ecological niche of the Bordeaux wild boar is fully compatible with the green framework of the PLU (Local Urban Plan) of the Bordeaux Metropolis.

In general, the growth of wildlife in urban areas “is not a mass phenomenon,” Françoise Le Lay said. “But there are wild animals that we see more and more like raccoons in the east of France, foxes or even cougars in the US… This says things about the evolution of our environment, climate change and urban sprawl. But we are very uncertain with these animals: at first we find it unusual, cute, and very quickly understand that cohabitation can be a problem. »

CaMBo’s edition on urban animals is available from Le Festin publications (80 pages, €10). It will be presented at a public meeting this Tuesday at 18:00 at the Bordeaux Museum, 5 Bardineau.

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