HAL : hal-00264032, version 1

DOI : 10.1111/j.1365-2664.2007.01393.x

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Journal of Applied Ecology 45, 1 (2008) 141-150

Indicators for biodiversity in agricultural landscapes: a pan-European study.

Regula Billeter (  Auteur correspondant ) 1, Jan Liira 2, Debra Bailey 3, Rob Bugter 4, Paul Arens 5, Isabel Augenstein 6, Stéphanie Aviron 3, 7, Jacques Baudry 8, 9, 10, Roman Bukacek 11, Francoise Burel 7, Martin Cerny 12, Gert De Blust 13, Rafael De Cock 14, Tim Diekotter 1, Hansjorg Dietz 15, Jolanda Dirksen 4, C. Dormann 6, Walter Durka 6, Mark Frenzel 6, Roman Hamersky 11, Frédéric Hendrickx 16, Felix Herzog 3, Stefan Klotz 6, Beno Koolstra 4, Angela Lausch 6, Didier Le Coeur 17, Jean-Pierre Maelfait 18, Paul Opdam 4, Martina Roubalova 12, Agnès Schermann-Legionnet 7, Nicolas Schermann 9, Torsten Schmidt 6, Oliver Schweiger 6, Marinus J.M. Smulders 6, Marjan Speelmans 19, P. Simova 11, Jana Verboom 4, Walter Van Wingerden 4, Marlin Zobel 2, Peter J. Edwards 20

Projet GREENVEINS (UE) Collaboration(s)

(2008)

1. In many European agricultural landscapes, species richness is declining considerably. Studies performed at a very large spatial scale are helpful in understanding the reasons for this decline and as a basis for guiding policy. In a unique, large-scale study of 25 agricultural landscapes in seven European countries, we investigated relationships between species richness in several taxa, and the links between biodiversity and landscape structure and management. 2. We estimated the total species richness of vascular plants, birds and five arthropod groups in each 16-km 2 landscape, and recorded various measures of both landscape structure and intensity of agricultural land use. We studied correlations between taxonomic groups and the effects of landscape and land-use parameters on the number of species in different taxonomic groups. Our statistical approach also accounted for regional variation in species richness unrelated to landscape or land-use factors. 3. The results reveal strong geographical trends in species richness in all taxonomic groups. No single species group emerged as a good predictor of all other species groups. Species richness of all groups increased with the area of semi-natural habitats in the landscape. Species richness of birds and vascular plants was negatively associated with fertilizer use. 4. Synthesis and applications. We conclude that indicator taxa are unlikely to provide an effective means of predicting biodiversity at a large spatial scale, especially where there is large biogeographical variation in species richness. However, a small list of landscape and land-use parameters can be used in agricultural landscapes to infer large-scale patterns of species richness. Our results suggest that to halt the loss of biodiversity in these landscapes, it is important to preserve and, if possible, increase the area of semi-natural habitat.

1 :	Swiss Federal Institute of Technology (ETH)
	Swiss Federal Institute of Technology
2 :	Institute of Botany and Ecology
	University of Tartu
3 :	Agroscope FAL Reckenholz (AGROSCOPE)
	ETH
4 :	Alterra Green World Research (AGWR)
	wageningen University
5 :	Plant Research International
	wageningen University
6 :	UFZ Centre for Environmental Research Leipzig-Halle (UFZ)
	UFZ
7 :	Ecosystèmes, biodiversité, évolution (ECOBIO)
	CNRS : UMR6553 – Université de Rennes 1 – INEE – Observatoire des Sciences de l'Univers de Rennes
8 :	INRA SAD Armor
	Institut national de la recherche agronomique (INRA)
9 :	INRA SAD Armorique
	Institut national de la recherche agronomique (INRA)
10 :	Centre Armoricain de Recherche en Environnement (CARE)
	CNRS : FR2116 – Institut national de la recherche agronomique (INRA) – Université de Rennes 1 – Université de Rennes II - Haute Bretagne – Ecole Nationale Supérieure Agronomique de Rennes
11 :	Nature Conservation Authority (NCA)
	Nature Conservation Authority
12 :	Institute of Forest Ecosystem Research (IFER)
	Institute of Foret Ecosystem Research
13 :	INBO
	Research Institute for Nature and Forest
14 :	INBO - Research Institute for Nature and Forest
	Research Institute for Nature and Forest
15 :	Eldgenössische Technische Hochschule Zürich (ETH Zürich)
	ETH Zurich
16 :	INBO - Research Institute for Nature and Forest
	State University of Ghent
17 :	INRA-SAD Armorique
	Institut national de la recherche agronomique (INRA)
18 :	Research Institute for Nature and Forest (INBO)
	State University of Ghent
19 :	Terrestrial Ecology Unit (TEREC) (TEREC)
	State University of Ghent
20 :	Institute of Integrative Biology (ETH)
	ETH Zurich

Domaine

:

Planète et Univers/Interfaces continentales, environnement

Mots Clés : arthropods – birds – habitats – indicator taxa – monitoring – semi-natural plants – species richness

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Contributeur : Valerie Briand <>

Soumis le : Jeudi 13 Mars 2008, 18:57:33

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