Floral resource availability from groundcover promotes bee abundance in coffee agroecosystems
| Autor: | Ivette Perfecto, David J. Gonthier, Kaleigh Fisher, Katherine K. Ennis |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Conservation of Natural Resources Resource (biology) Pollination ved/biology.organism_classification_rank.species Foraging Biodiversity Coffea Flowers 010603 evolutionary biology 01 natural sciences Abundance (ecology) Pollinator Animals Mexico Population Density Ecology biology ved/biology 010604 marine biology & hydrobiology Bees biology.organism_classification Groundcover Crop Production |
| Zdroj: | Ecological applications : a publication of the Ecological Society of America. 27(6) |
| ISSN: | 1051-0761 |
| Popis: | Patterns of bee abundance and diversity across different spatial scales have received thorough research consideration. However, the impact of short- and long-term temporal resource availability on biodiversity has been less explored. This is highly relevant in tropical agricultural systems for pollinators, as many foraging periods of pollinators extend beyond flowering of any single crop species. In this study, we sought to understand how bee communities in tropical agroecosystems changed between seasons, and if short- and long-term floral resource availability influenced their diversity and abundance. We used a threshold analysis approach in order to explore this relationship at two time scales. This study took place in a region dominated by coffee agroecosystems in Southern Mexico. This was an ideal system because the landscape offers a range of coffee management regimes that maintain heterogeneity in floral resource availability spatially and temporally. We found that the bee community varies significantly between seasons. There were higher abundances of native social, solitary and managed honey bees during the dry season when coffee flowers. Additionally, we found that floral resources from groundcover, but not trees, were associated with bee abundance. Further, the temporal scale of the availability of these resources is important, whereby short-term floral resource availability appears particularly important in maintaining high bee abundance at sites with lower seasonal complementarity. We argue that in addition to spatial resource heterogeneity, temporal resource heterogeneity is critical in explaining bee community patterns, and should thus be considered to promote pollinator conservation. |
| Databáze: | OpenAIRE |
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