Response of the small mammal community to changes in western French agricultural landscapes.
Norman Millan de La Pena
(1)
,
Alain Butet
(1)
,
Yannick R. Delettre
(1)
,
G. Paillat
(1)
,
Philippe Morant
(2)
,
Laurence Le Dû-Blayo
(3)
,
Françoise Burel
(1)
Alain Butet
- Fonction : Auteur
- PersonId : 178849
- IdHAL : alain-butet
- ORCID : 0000-0002-9173-3466
- IdRef : 076148459
Yannick R. Delettre
- Fonction : Auteur
- PersonId : 957507
Philippe Morant
- Fonction : Auteur
- PersonId : 1177339
- IdRef : 182200949
Laurence Le Dû-Blayo
- Fonction : Auteur
- PersonId : 14968
- IdHAL : laurence-le-du-blayo
- IdRef : 120522314
Résumé
We studied the response of the small mammal community (rodents and shrews) to recent changes in agricultural
systems of western French landscapes. Work was conducted on twelve sites representative of the diversity of
farming systems in this region. The characteristics of small mammal assemblages in each site were assessed using
Barn Owl (Tyto alba) pellet analysis. Relationships between small mammal data and landscape descriptors were
performed through co-inertia analysis. Richness and specific composition of the small mammal community were
not affected by the degree of cultivation but variations in species frequency could be observed. The prevalence of
some species allowed us to distinguish three main assemblages which were characteristic of low, medium, and high
intensified landscapes. Status and life traits of these species showed that intensification of agriculture has negative
effects on density of rare and habitat-specialist species while it favours habitat-generalist species, some of them
being known to exhibit fluctuating density. The two main ways of agricultural intensification (maize vs. other crops)
did not show any significant relationships with species assemblages. Our results gave us the opportunity to suggest
recommendations on agronomical and conservation problems that may arise from these changes of agriculture in
western France.
Domaines
GéographieFormat du dépôt | Notice |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Response of the small mammal community to changes in western French agricultural landscapes.
|
Résumé |
en
We studied the response of the small mammal community (rodents and shrews) to recent changes in agricultural
systems of western French landscapes. Work was conducted on twelve sites representative of the diversity of
farming systems in this region. The characteristics of small mammal assemblages in each site were assessed using
Barn Owl (Tyto alba) pellet analysis. Relationships between small mammal data and landscape descriptors were
performed through co-inertia analysis. Richness and specific composition of the small mammal community were
not affected by the degree of cultivation but variations in species frequency could be observed. The prevalence of
some species allowed us to distinguish three main assemblages which were characteristic of low, medium, and high
intensified landscapes. Status and life traits of these species showed that intensification of agriculture has negative
effects on density of rare and habitat-specialist species while it favours habitat-generalist species, some of them
being known to exhibit fluctuating density. The two main ways of agricultural intensification (maize vs. other crops)
did not show any significant relationships with species assemblages. Our results gave us the opportunity to suggest
recommendations on agronomical and conservation problems that may arise from these changes of agriculture in
western France.
|
Auteur(s) |
Norman Millan de La Pena
1
, Alain Butet
1
, Yannick R. Delettre
1
, G. Paillat
1
, Philippe Morant
2
, Laurence Le Dû-Blayo
3
, Françoise Burel
1
1
ECOBIO -
Ecosystèmes, biodiversité, évolution [Rennes]
( 928 )
- Bâtiment 14 - Université de Rennes 1 - Campus de Beaulieu - CS 74205 - 35042 Rennes Cedex - France
- France
2
LETG -
Littoral, Environnement, Télédétection, Géomatique UMR 6554
( 14266 )
- Institut Universitaire Européen de la Mer - Technopôle Brest-Iroise - Place Nicolas Copernic 29280 Plouzané
- France
3
LETG - Rennes -
Littoral, Environnement, Télédétection, Géomatique
( 3177 )
- Maison de la Recherche Place du Recteur Henri Le Moal 35043 RENNES CEDEX
- France
|
Comité de lecture |
Oui
|
Vulgarisation |
Non
|
Langue du document |
Anglais
|
Nom de la revue |
|
Audience |
Internationale
|
Date de publication |
2003
|
Volume |
18
|
Numéro |
8
|
Page/Identifiant |
265-278
|
Domaine(s) |
|
Collaboration/Projet |
|
Financement |
|
Mots-clés |
en
agricultural intensification, Barn Owl, biodiversity, farming landscapes, small mammal community, multivariate statistical analysis
|
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