نتایج جستجو برای: agroecosystems
تعداد نتایج: 1685 فیلتر نتایج به سال:
Effects of predatory ants on lower trophic levels across a gradient of coffee management complexity.
1. Ants are important predators in agricultural systems, and have complex and often strong effects on lower trophic levels. Agricultural intensification reduces habitat complexity, food web diversity and structure, and affects predator communities. Theory predicts that strong top-down cascades are less likely to occur as habitat and food web complexity decrease. 2. To examine relationships betw...
For a large extent of historiography, the history of Spanish agriculture during the twentieth century is a story of success. However, this narrative has been built on monetary analysis, and it does not usually take into account the effects on rural society and agroecosystems. The aim of this paper is to analyze what has happened from a biophysical perspective to ascertain whether transformation...
Parallel declines of wild pollinators and pollinator-dependent plants have raised alarms over the loss of pollination services in agroecosystems. A spatially explicit approach is needed to develop specific recommendations regarding the design of agricultural landscapes to sustain wild pollinator communities and the services they provide. I modeled pollination services in agroecosystems using a ...
The aim of this work was to elucidate the socio-cultural and economic value of a number of ecosystem services delivered by mountain agroecosystems (mostly grazing systems) in Euro-Mediterranean regions. We combined deliberative (focus groups) and survey-based stated-preference methods (choice modelling) to, first, identify the perceptions of farmers and other citizens on the most important ecos...
Lacewings (Neuroptera) are the efficient predators of pests in different agroecosystems. In this paper, totally 23 species of 14 genera including, Anisochrysa, Chrysopa, Chrysoperla, Cunctochrysa, Dichochrysa, Mallada, Suarius of family Chrysopidae, Coniopteryx, Hemisemidalis of family Coniopterigidae, Hemerobius, Sympherobius, Wasmaelius of family Hemerobiidae and Myrmeleon, Palpares of family...
We live in a plastic age (Thompson et al., 2009), with microplastic (typically defined as plastic particles < 5mm) becoming an increasingly appreciated aspect of environmental pollution. Research has been overwhelmingly focused on aquatic systems, especially the oceans, but there is a current shift to more strongly consider terrestrial ecosystems (Rillig, 2012; Horton et al., 2017). In particul...
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