Amount, distance-dependent and structural effects of forest patches on bees in agricultural landscapes
Abstract Background The growing human population and the need for more food in the world have reduced forests and turned them into agricultural land. Many agricultural products are dependent on pollinating bees, so it is possible to increase crop production by increasing the population of bees in ag...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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BMC
2022-01-01
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| Series: | Agriculture & Food Security |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40066-022-00360-x |
| _version_ | 1811329042324914176 |
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| author | Ehsan Rahimi Shahindokht Barghjelveh Pinliang Dong |
| author_facet | Ehsan Rahimi Shahindokht Barghjelveh Pinliang Dong |
| author_sort | Ehsan Rahimi |
| collection | DOAJ |
| description | Abstract Background The growing human population and the need for more food in the world have reduced forests and turned them into agricultural land. Many agricultural products are dependent on pollinating bees, so it is possible to increase crop production by increasing the population of bees in agricultural landscapes and preventing further deforestation. In agricultural landscapes, bees use forest patches as nesting habitats and, therefore, are highly dependent on these patches. Therefore, by creating new forest patches within agricultural fields, we can increase the pollination rate, and thus the crop production. In this regard, understanding the role of forest patches and their effects on bee populations is a key step in successfully implementing the patch creation strategy. To determine the effects of forest patches on bees and pollination services, we reviewed 93 articles examining the effects of forest patches on bees in agricultural landscapes. We divided these effects into three categories based on the sampling method: (1) distance-dependent, (2) amount, and (3) structural effects. Methods We searched for published studies related to the effects of the forest patches on bees in agricultural landscapes using the ISI Web of Science. We conducted our search from May 1991 to May 2021 using the following search string keywords: forest fragment, forest patch, forest fragmentation, pollination, and bee. Results Approximately, 79% of studies showed that by increasing the distance (up to 2 km) from forest patches, regardless of the type of species, the type of agricultural product around the patches, the size and number of patches, the bees’ diversity and abundance decrease. Approximately, 76% of the studies showed that the presence of forest cover within a radius of 2 km from the target sites has a positive effect on bee populations. Our data also show that larger forest patches maintain a larger population of bees than smaller ones. Conclusion It was not clear what percentage of a landscape should be covered by forest or how much habitat was sufficient to maintain a viable population of bees. Therefore, we suggest future studies to find the thresholds of forest amounts below which the bee population is rapidly declining. |
| first_indexed | 2024-04-13T15:36:49Z |
| format | Article |
| id | doaj.art-8cf3c6acaeed4216b3843555dc9adc9b |
| institution | Directory Open Access Journal |
| issn | 2048-7010 |
| language | English |
| last_indexed | 2024-04-13T15:36:49Z |
| publishDate | 2022-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Agriculture & Food Security |
| spelling | doaj.art-8cf3c6acaeed4216b3843555dc9adc9b2022-12-22T02:41:15ZengBMCAgriculture & Food Security2048-70102022-01-0111111510.1186/s40066-022-00360-xAmount, distance-dependent and structural effects of forest patches on bees in agricultural landscapesEhsan Rahimi0Shahindokht Barghjelveh1Pinliang Dong2Environmental Sciences Research Institute, Shahid Beheshti UniversityEnvironmental Sciences Research Institute, Shahid Beheshti UniversityDepartment of Geography and the Environment, University of North TexasAbstract Background The growing human population and the need for more food in the world have reduced forests and turned them into agricultural land. Many agricultural products are dependent on pollinating bees, so it is possible to increase crop production by increasing the population of bees in agricultural landscapes and preventing further deforestation. In agricultural landscapes, bees use forest patches as nesting habitats and, therefore, are highly dependent on these patches. Therefore, by creating new forest patches within agricultural fields, we can increase the pollination rate, and thus the crop production. In this regard, understanding the role of forest patches and their effects on bee populations is a key step in successfully implementing the patch creation strategy. To determine the effects of forest patches on bees and pollination services, we reviewed 93 articles examining the effects of forest patches on bees in agricultural landscapes. We divided these effects into three categories based on the sampling method: (1) distance-dependent, (2) amount, and (3) structural effects. Methods We searched for published studies related to the effects of the forest patches on bees in agricultural landscapes using the ISI Web of Science. We conducted our search from May 1991 to May 2021 using the following search string keywords: forest fragment, forest patch, forest fragmentation, pollination, and bee. Results Approximately, 79% of studies showed that by increasing the distance (up to 2 km) from forest patches, regardless of the type of species, the type of agricultural product around the patches, the size and number of patches, the bees’ diversity and abundance decrease. Approximately, 76% of the studies showed that the presence of forest cover within a radius of 2 km from the target sites has a positive effect on bee populations. Our data also show that larger forest patches maintain a larger population of bees than smaller ones. Conclusion It was not clear what percentage of a landscape should be covered by forest or how much habitat was sufficient to maintain a viable population of bees. Therefore, we suggest future studies to find the thresholds of forest amounts below which the bee population is rapidly declining.https://doi.org/10.1186/s40066-022-00360-xAgricultural landscapesBeesForest patchesPollination |
| spellingShingle | Ehsan Rahimi Shahindokht Barghjelveh Pinliang Dong Amount, distance-dependent and structural effects of forest patches on bees in agricultural landscapes Agriculture & Food Security Agricultural landscapes Bees Forest patches Pollination |
| title | Amount, distance-dependent and structural effects of forest patches on bees in agricultural landscapes |
| title_full | Amount, distance-dependent and structural effects of forest patches on bees in agricultural landscapes |
| title_fullStr | Amount, distance-dependent and structural effects of forest patches on bees in agricultural landscapes |
| title_full_unstemmed | Amount, distance-dependent and structural effects of forest patches on bees in agricultural landscapes |
| title_short | Amount, distance-dependent and structural effects of forest patches on bees in agricultural landscapes |
| title_sort | amount distance dependent and structural effects of forest patches on bees in agricultural landscapes |
| topic | Agricultural landscapes Bees Forest patches Pollination |
| url | https://doi.org/10.1186/s40066-022-00360-x |
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