Effect of terraces on soil dwelling arthropod diversity in soybean production
The loss of biodiversity in agroecosystems constitutes a main issue in ecological research. Steep backslope terraces, used for soil erosion control, could act as refuges for arthropods in agricultural landscapes. Total and predator arthropod species richness and abundance were surveyed in soybean fields in Entre Ríos under a no-till system with and without terraces using pit-fall traps. For the total crop period, total species richness was significantly higher at the margins than in the crop, but not for predator species. Abundance was higher in margins than in crops only when total individuals were considered. Predators were more abundant in margins only at the beginning and the end of the crop cycle, although, in fields with terraces abundance and richness were never higher than in fields without terraces for both total species and predators. Field with terraces did not increase the abundance but increased the species numbers, both total and predators, showing that habitat heterogeneity introduced by terraces favors arthropod diversity at the field scale.
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Asociación Argentina de Ecología
2008
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rev-ecoaus-article-13822020-11-04T20:56:08Z Effect of terraces on soil dwelling arthropod diversity in soybean production Efecto de las terrazas sobre la diversidad de artrópodos caminadores en cultivos de soja Weyland, Federico Zaccagnini, María Elena biodiversity predators species richness erosion control agroecosystems no- tillage no-tillage biodiversidad depredadores riqueza de especies control de la erosión agroecosistemas siembra directa The loss of biodiversity in agroecosystems constitutes a main issue in ecological research. Steep backslope terraces, used for soil erosion control, could act as refuges for arthropods in agricultural landscapes. Total and predator arthropod species richness and abundance were surveyed in soybean fields in Entre Ríos under a no-till system with and without terraces using pit-fall traps. For the total crop period, total species richness was significantly higher at the margins than in the crop, but not for predator species. Abundance was higher in margins than in crops only when total individuals were considered. Predators were more abundant in margins only at the beginning and the end of the crop cycle, although, in fields with terraces abundance and richness were never higher than in fields without terraces for both total species and predators. Field with terraces did not increase the abundance but increased the species numbers, both total and predators, showing that habitat heterogeneity introduced by terraces favors arthropod diversity at the field scale. La pérdida de la biodiversidad y sus funciones en agroecosistemas es un tema de interés creciente en la investigación ecológica. Las terrazas, utilizadas para el control de la erosión hídrica, podrían actuar como refugios de artrópodos en los paisajes agrícolas. En este trabajo relevamos la riqueza y la abundancia total de especies y de depredadores en lotes de soja cultivados bajo el sistema de siembra directa y con la implementación o no de terrazas. Para el total del ciclo del cultivo, la riqueza total de especies fue significativamente mayor en los márgenes que en el cultivo, pero no así la de depredadores. La abundancia fue mayor en los márgenes que en los cultivos sólo para el total de individuos. Los depredadores fueron más abundantes en los márgenes sólo al comienzo y al final del ciclo del cultivo. Los lotes con terrazas no favorecieron la abundancia de artrópodos pero sí la riqueza tanto de depredadores como del total de especies, lo cual indica que la heterogeneidad ambiental que introducen las terrazas favorece la diversidad de artrópodos en la escala de lote. La riqueza de depredadores estuvo altamente correlacionada a la riqueza total de especies, lo que sugiere que este grupo funcional podría ser un buen indicador de la riqueza de especies estimada por trampas de caída. Asociación Argentina de Ecología 2008-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículos application/pdf https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1382 Ecología Austral; Vol. 18 No. 3 (2008); 357-366 Ecología Austral; Vol. 18 Núm. 3 (2008); 357-366 0327-5477 1667-7838 spa https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1382/747 Derechos de autor 2020 Ecología Austral |
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Asociación Argentina de Ecología |
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Weyland, Federico Zaccagnini, María Elena |
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Weyland, Federico Zaccagnini, María Elena Effect of terraces on soil dwelling arthropod diversity in soybean production |
| author_facet |
Weyland, Federico Zaccagnini, María Elena |
| author_sort |
Weyland, Federico |
| title |
Effect of terraces on soil dwelling arthropod diversity in soybean production |
| title_short |
Effect of terraces on soil dwelling arthropod diversity in soybean production |
| title_full |
Effect of terraces on soil dwelling arthropod diversity in soybean production |
| title_fullStr |
Effect of terraces on soil dwelling arthropod diversity in soybean production |
| title_full_unstemmed |
Effect of terraces on soil dwelling arthropod diversity in soybean production |
| title_sort |
effect of terraces on soil dwelling arthropod diversity in soybean production |
| description |
The loss of biodiversity in agroecosystems constitutes a main issue in ecological research. Steep backslope terraces, used for soil erosion control, could act as refuges for arthropods in agricultural landscapes. Total and predator arthropod species richness and abundance were surveyed in soybean fields in Entre Ríos under a no-till system with and without terraces using pit-fall traps. For the total crop period, total species richness was significantly higher at the margins than in the crop, but not for predator species. Abundance was higher in margins than in crops only when total individuals were considered. Predators were more abundant in margins only at the beginning and the end of the crop cycle, although, in fields with terraces abundance and richness were never higher than in fields without terraces for both total species and predators. Field with terraces did not increase the abundance but increased the species numbers, both total and predators, showing that habitat heterogeneity introduced by terraces favors arthropod diversity at the field scale. |
| publisher |
Asociación Argentina de Ecología |
| publishDate |
2008 |
| url |
https://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/1382 |
| work_keys_str_mv |
AT weylandfederico effectofterracesonsoildwellingarthropoddiversityinsoybeanproduction AT zaccagninimariaelena effectofterracesonsoildwellingarthropoddiversityinsoybeanproduction AT weylandfederico efectodelasterrazassobreladiversidaddeartropodoscaminadoresencultivosdesoja AT zaccagninimariaelena efectodelasterrazassobreladiversidaddeartropodoscaminadoresencultivosdesoja |
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