Macroland project – Effect of landscape fragmentation on the red squirrel Sciurus vulgaris

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Description

This dataset, collected since 2021 as part of a research project led by CEFE and IMBE, documents the presence of the red squirrel and other small mammals across several study areas, including the Montpellier metropolitan region (France). The project aims to investigate the effects of landscape fragmentation on population connectivity. The objective is to better understand the spatial distribution of individuals and their ability to move between habitat fragments in urban and peri-urban environments. Sampling was conducted using a network of hair traps installed across landscapes exhibiting varying degrees of fragmentation. These devices enable mammal detection through hair collection, which is then used for species identification and individual genotyping. The dataset includes occurrence data of red squirrels and other small mammals by trap and sampling site, derived from hair sampling. Hair samples were subject to genetic analyses for species and individual identification; however, the genetic data are not included in this dataset. Project funded through SCALED ERC STG 949812. Licence: CC BY 4.0

Enregistrements de données

Les données de cette ressource occurrence ont été publiées sous forme dune Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant quensemble dun ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 221 enregistrements.

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.

Versions

Le tableau ci-dessous naffiche que les versions publiées de la ressource accessibles publiquement.

Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Coulon A, Albert C (2026). Macroland project – Effect of landscape fragmentation on the red squirrel Sciurus vulgaris. Version 1.3. Centre d’Ecologie Fonctionnelle & Evolutive (CEFE). Occurrence dataset. https://ipt.gbif.fr/resource?r=coulon_ecureuil&v=1.3

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est Centre d’Ecologie Fonctionnelle & Evolutive (CEFE). Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède lUUID GBIF suivante : acf6ebcb-57e9-47ec-b901-24bb1ac920e3. Centre d’Ecologie Fonctionnelle & Evolutive (CEFE) publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec lapprobation du GBIF France.

Mots-clé

Occurrence; Urban ecosystems; Landscape fragmentation; Habitat connectivity; Small mammals; Red squirrel; Sciurus vulgaris; Hair trap surveys; Non-invasive sampling; Species occurrences; Urban biodiversity; Peri-urban environments; Population connectivity; Mammal monitoring; Research study; Spatial distribution; Wildlife corridors; Functional connectivity; Community ecology; Observation

Contacts

Aurélie Coulon

Créateur ●
Personne De Contact

CEFE

34070 Montpellier

https://orcid.org/ttps://orcid.org/0000-0003-0309-2214

Cécile Albert

Créateur ●
Personne De Contact

IMBE

13545 Aix-en-Provence

https://orcid.org/https://orcid.org/0000-0002-0991-1068

Montpellier Méditerranée Métropole

Ville de Montpellier

Couverture géographique

N/A

Enveloppe géographique	Sud Ouest [43,559, 3,711], Nord Est [43,709, 3,952]

Couverture taxonomique

Pas de description disponible

Kingdom	Animalia
Class	Mammalia
Order	Rodentia, Carnivora
Family	Mustelidae, Sciuridae

Couverture temporelle

Date de début / Date de fin	2020-10-01 / 2025-09-17

Données sur le projet

Pas de description disponible

Titre	Macroland project – Effect of landscape fragmentation on the red squirrel

Les personnes impliquées dans le projet:

Aurélie Coulon

Auteur

https://orcid.org/ttps://orcid.org/0000-0003-0309-2214

Méthodes déchantillonnage

Sampling was carried out using a standardized network of hair traps deployed across selected habitat fragments. Traps were installed on trees or suitable structures to maximize detection probability of red squirrels and other small mammals. Each device passively collected hair samples during deployment periods. Collected samples were retrieved during scheduled field visits. Hair material was subsequently used for species identification and, when possible, individual genetic identification. This non-invasive protocol allowed repeated detection without animal capture, ensuring minimal disturbance while enabling monitoring of presence across fragmented landscapes.

Etendue de létude	The study was conducted across multiple sampling sectors in southern France, including the Montpellier metropolitan area and surrounding peri-urban landscapes. Sampling sites were selected along gradients of landscape fragmentation, encompassing continuous woodland patches, isolated forest fragments, urban parks, and suburban green infrastructures. The spatial extent reflects a diversity of habitat configurations representative of Mediterranean urban and peri-urban environments, enabling the assessment of connectivity patterns for arboreal and small terrestrial mammals.

Etendue de létude

The study was conducted across multiple sampling sectors in southern France, including the Montpellier metropolitan area and surrounding peri-urban landscapes. Sampling sites were selected along gradients of landscape fragmentation, encompassing continuous woodland patches, isolated forest fragments, urban parks, and suburban green infrastructures. The spatial extent reflects a diversity of habitat configurations representative of Mediterranean urban and peri-urban environments, enabling the assessment of connectivity patterns for arboreal and small terrestrial mammals.

Description des étapes de la méthode:

Hair traps were installed at predefined sampling locations following a standardized deployment protocol. During each collection session, hair samples were carefully removed, labeled, and stored for laboratory processing. Field metadata, including trap location, installation date, and collection date, were recorded. Samples underwent morphological and genetic analyses to confirm species identity and, where feasible, individual assignment. Occurrence data were then digitized, standardized taxonomically, and formatted according to Darwin Core specifications. Quality control procedures included coordinate validation, date verification, and harmonization of observer and sampling information prior to dataset publication.

Métadonnées additionnelles

Identifiants alternatifs	acf6ebcb-57e9-47ec-b901-24bb1ac920e3
	https://ipt.gbif.fr/resource?r=coulon_ecureuil