Species diversity and food web structure jointly shape natural biological control in agricultural landscapes.
Commun Biol
; 4(1): 979, 2021 08 18.
Article
en En
| MEDLINE
| ID: mdl-34408250
ABSTRACT
Land-use change and agricultural intensification concurrently impact natural enemy (e.g., parasitoid) communities and their associated ecosystem services (ESs), i.e., biological pest control. However, the extent to which (on-farm) parasitoid diversity and food webs mediate landscape-level influences on biological control remains poorly understood. Here, drawing upon a 3-year study of quantitative parasitoid-hyperparasitoid trophic networks from 25 different agro-landscapes, we assess the cascading effects of landscape composition, species diversity and trophic network structure on ecosystem functionality (i.e., parasitism, hyperparasitism). Path analysis further reveals cascaded effects leading to biological control of a resident crop pest, i.e., Aphis gossypii. Functionality is dictated by (hyper)parasitoid diversity, with its effects modulated by food web generality and vulnerability. Non-crop habitat cover directly benefits biological control, whereas secondary crop cover indirectly lowers hyperparasitism. Our work underscores a need to simultaneously account for on-farm biodiversity and trophic interactions when investigating ESs within dynamic agro-landscapes.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Áfidos
/
Control Biológico de Vectores
/
Cadena Alimentaria
/
Biodiversidad
Límite:
Animals
País/Región como asunto:
Asia
Idioma:
En
Revista:
Commun Biol
Año:
2021
Tipo del documento:
Article
País de afiliación:
China