Crop pests and predators exhibit inconsistent responses to surrounding landscape composition

Karp Daniel S., Chaplin-Kramer Rebecca, Meehan Timothy D., Martin Emily A., DeClerck Fabrice, Grab Heather, Gratton Claudio, Hunt Lauren, Larsen Ashley E., Martinez-Salinas Alejandra, O'Rourke Megan E., Rusch Adrien, Poveda Katja, Jonsson Mattias, Rosenheim Jay A., Schellhorn Nancy A., Tscharntke Teja, Wratten Stephen D., Zhang Wei, Iverson Aaron L., Adler Lynn S., Albrecht Matthias, Alignier Audrey, Angelella Gina M., Anjum Muhammad Zubair, Avelino Jacques, Batary Peter, Baveco Johannes M., Bianchi Felix J.J.A., Birkhofer Klaus, Bohnenblust Eric W., Bommarco Riccardo, Brewer Michael J., Caballero-López Berta, Carrière Yves, Carvalheiro Luísa G., Cayuela Luis, Centrella Mary, Cetkovic Aleksandar, Henri Dominic Charles, Chabert Ariane, Costamagna Alejandro C., De la Mora Aldo, De Kraker Joop, Desneux Nicolas, Diehl Eva, Diekötter Tim, Dormann Carsten F., Eckberg James O., Entling Martin H., Fiedler Daniela, Franck Pierre, van Veen Frank, Frank Thomas, Gagic Vesna, Garratt Michael P.D., Getachew Awraris, Gonthier David J., Goodell Peter B., Graziosi Ignazio, Groves Russell L., Gurr Geoff M., Hajian-Forooshani Zachary, Heimpel George E., Herrmann John D., Huseth Anders S., Inclán Diego J., Ingrao Adam J., Iv Phirun, Jacot Katja, Johnson Gregg A., Jones Laura, Kaiser Marina, Kaser Joe M., Keasar Tamar, Kim Tania N., Kishinevsky Miriam, Landis Douglas A., Lavandero Blas, Lavigne Claire, Le Ralec Anne, Lemessa Debissa, Letourneau Deborah K., Liere Heidi, Lu Yanhui, Lubin Yael, Luttermoser Tim, Maas Bea, Mace Kevi, Madeira Felipe, Mader Viktoria, Cortesero Anne-Marie, Marini Lorenzo, Martinez Eliana, Martinson Holly M., Menozzi Philippe, et al.. 2018. Crop pests and predators exhibit inconsistent responses to surrounding landscape composition. Proceedings of the National Academy of Sciences of the United States of America, 115 (33) : E7863-E7870.

https://doi.org/10.1073/pnas.1800042115

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Url - jeu de données - Entrepôt autre : https://doi.org/10.5683/SP2/63OGB0

Quartile : Outlier, Sujet : MULTIDISCIPLINARY SCIENCES

Liste HCERES des revues (en SHS) : oui

Thème(s) HCERES des revues (en SHS) : Economie-gestion; Psychologie-éthologie-ergonomie

Résumé : The idea that noncrop habitat enhances pest control and represents a win–win opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are measured. Here, we use a pest-control database encompassing 132 studies and 6,759 sites worldwide to model natural enemy and pest abundances, predation rates, and crop damage as a function of landscape composition. Our results showed that although landscape composition explained significant variation within studies, pest and enemy abundances, predation rates, crop damage, and yields each exhibited different responses across studies, sometimes increasing and sometimes decreasing in landscapes with more noncrop habitat but overall showing no consistent trend. Thus, models that used landscape-composition variables to predict pest-control dynamics demonstrated little potential to explain variation across studies, though prediction did improve when comparing studies with similar crop and landscape features. Overall, our work shows that surrounding noncrop habitat does not consistently improve pest management, meaning habitat conservation may bolster production in some systems and depress yields in others. Future efforts to develop tools that inform farmers when habitat conservation truly represents a win–win would benefit from increased understanding of how landscape effects are modulated by local farm management and the biology of pests and their enemies.

Classification Agris : H10 - Ravageurs des plantes
F08 - Systèmes et modes de culture

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

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