Contrasting bird communities along production gradients of crops and livestock in French farmlands

Dross, Camille; Princé, Karine; Jiguet, Frédéric; Tichit, Muriel

doi:10.1016/j.agee.2017.10.025

Cited by 10 publications

(13 citation statements)

References 38 publications

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“…Grassland homogeneity can decrease species diversity and richness. For instance, studies in France show that avian populations are less diverse nearer to more intensified livestock production (Dross et al 2017). Research in Italy similarly indicates decreased butterfly species richness with transitions to more intensive dairy systems (Jerrentrup et al 2016).…”

Section: Effects Of Dairy Intensificationmentioning

confidence: 99%

Dairy intensification: Drivers, impacts and alternatives

Clay

Garnett

Lorimer

2019

Ambio

171

129

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Dairy production systems have rapidly intensified over the past several decades. Dairy farms in many world regions are larger and concentrated in fewer hands. Higher productivity can increase overall economic gains but also incurs site-specific social and environmental costs. In this paper, we review the drivers and impacts of dairy intensification. We identify in the literature four prominent concerns about dairy intensification: the environment, animal welfare, socioeconomic well-being, and human health. We then critically assess three frameworks—sustainable intensification, multifunctionality, and agroecology—which promise win–win solutions to these concerns. We call for research and policy approaches that can better account for synergies and trade-offs among the multiple dimensions of dairy impacts. Specifically, we suggest the need to (1) consider dairy system transitions within broader processes of social-environmental change and (2) investigate how certain framings and metrics may lead to uneven social-environmental outcomes. Such work can help visualize transformations towards more equitable, ethical, and sustainable food systems.

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Section: Effects Of Dairy Intensificationmentioning

confidence: 99%

Dairy intensification: Drivers, impacts and alternatives

Clay

Garnett

Lorimer

2019

Ambio

171

129

View full text Add to dashboard Cite

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“…, Dross et al. ). Further, species nonnative to North America and associated with livestock, such as European Starlings ( Sturnus vulgaris ) and House Sparrows ( Passer domesticus ), may dissuade native species through nest site competition or behavioral interference, damage crops, and disrupt pest control services (Weitzel , Somers and Morris , Peisley et al.…”

Section: Introductionmentioning

confidence: 99%

Highly diversified crop–livestock farming systems reshape wild bird communities

Smith

Kennedy

Owen

et al. 2019

Ecological Applications

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Agricultural intensification is a leading threat to bird conservation. Highly diversified farming systems that integrate livestock and crop production might promote a diversity of habitats useful to native birds foraging across otherwise‐simplified landscapes. At the same time, these features might be attractive to nonnative birds linked to a broad range of disservices to both crop and livestock production. We evaluated the influence of crop–livestock integration on wild bird richness and density along a north‐south transect spanning the U.S. West Coast. We surveyed birds on 52 farms that grew primarily mixed vegetables and fruits alone or integrated livestock into production. Crop–livestock systems harbored higher native bird density and richness relative to crop‐only farms, a benefit more pronounced on farms embedded in nonnatural landscapes. Crop–livestock systems bolstered native insectivores linked to the suppression of agricultural pest insects but did not bolster native granivores that may be more likely to damage crops. Crop–livestock systems also significantly increased the density of nonnative birds, primarily European Starlings (Sturnus vulgaris) and House Sparrows (Passer domesticus) that may compete with native birds for resources. Models supported a small, positive correlation between nonnative density and overall native bird density as well as between nonnative density and native granivore density. Relative to crop‐only farms, on average, crop–livestock systems exhibited 1.5 times higher patch richness, 2.4 times higher density of farm structures, 7.3 times smaller field sizes, 2.4 times greater integration of woody crops, and 5.3 times greater integration of pasture/hay habitat on farm. Wild birds may have responded to this habitat diversity and/or associated food resources. Individual farm factors had significantly lower predictive power than farming system alone (change in C statistic information criterion (ΔCIC) = 80.2), suggesting crop–livestock systems may impact wild birds through a suite of factors that change with system conversion. Collectively, our findings suggest that farms that integrate livestock and crop production can attract robust native bird communities, especially within landscapes devoted to intensified food production. However, additional work is needed to demonstrate persistent farm bird communities through time, ecophysiological benefits to birds foraging on these farms, and net effects of both native and nonnative wild birds in agroecosystems.

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“…Ce zonage historique n'a pas été remis en cause jusqu' ici. Il est fréquemment utilisé pour étudier les impacts environnementaux de l'agriculture (Teillard et al ., 2015 ;Dross et al ., 2018). La superficie moyenne d'une PRA est 770 km², de taille intermédiaire entre la commune (15 km² en moyenne) et le département (environ 5 800 km² en moyenne).…”

Section: Démarche Générale Indicateurs Et éChelles Considéréesunclassified

Quels équilibres végétal/animal en France métropolitaine, aux échelles nationale et « petite région agricole » ?

Jouven¹,

Puillet²,

Perrot³

et al. 2019

INRA Prod. Anim.

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L’ajustement des activités d’élevage aux ressources localement présentes est un des leviers de la transition écologique, permettant une autonomie des territoires et une moindre consommation d’intrants nécessitant un transport. Le travail présenté ici a été réalisé dans le cadre de l’étude INRA EFESE-écosystèmes agricoles. Il propose une méthode simple basée sur la statistique agricole et plusieurs sources complémentaires pour calculer sur une base annuelle l’équilibre végétal/animal d’un territoire. La capacité d’un territoire à nourrir sa population d’animaux d’élevage (CAPA) est définie comme le rapport entre les ressources végétales disponibles pour l’alimentation animale et la consommation par le cheptel localement présent. Elle peut être calculée en Matière Sèche (MS) ou azotée (MAT), à l’échelle nationale ou des Petites Régions Agricoles (PRA). Les PRA comportant des populations animales trop faibles sont exclues de l’analyse ; de même, l’incertitude sur les données d’effectifs et de consommation des chevaux n’a pas permis de les comptabiliser. Au niveau national, la CAPA globale est bonne (0,98 en MS ; 0,81 en MAT) mais cache un déficit en protéines, avec une CAPA en MAT de 0,42 pour les concentrés, à associer à la dépendance aux tourteaux de soja importés. Au niveau PRA, une typologie fait apparaître cinq groupes distincts en termes d’équilibre végétal/animal. La cartographie de ces groupes permet de distinguer des zones homogènes, et d’autres présentant plusieurs groupes donc des synergies potentielles au niveau supra. Ces résultats originaux mériteront d’être affinés en précisant certains calculs, puis mobilisés pour accompagner la transition écologique des territoires.

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Contrasting bird communities along production gradients of crops and livestock in French farmlands

Cited by 10 publications

References 38 publications

Dairy intensification: Drivers, impacts and alternatives

Dairy intensification: Drivers, impacts and alternatives

Highly diversified crop–livestock farming systems reshape wild bird communities

Quels équilibres végétal/animal en France métropolitaine, aux échelles nationale et « petite région agricole » ?

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