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Promoting diverse communities of wild bees and hoverflies requires a landscape approach to managing meadows
•Pan-trapping and sweep-netting often showed contrasting results.•Abundance and richness of bees and hoverflies were generally higher in delayed and refuge than control meadows.•Feeding and nesting guilds responded differently to the mowing regimes.•Simple alterations to mowing regimes positively af...
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Published in: | Agriculture, ecosystems & environment ecosystems & environment, 2017-02, Vol.239, p.376-384 |
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creator | Meyer, Sandro Unternährer, Debora Arlettaz, Raphaël Humbert, Jean-Yves Menz, Myles H.M. |
description | •Pan-trapping and sweep-netting often showed contrasting results.•Abundance and richness of bees and hoverflies were generally higher in delayed and refuge than control meadows.•Feeding and nesting guilds responded differently to the mowing regimes.•Simple alterations to mowing regimes positively affected communities of key pollinator taxa.
There is ongoing concern regarding the observed decline in pollinator populations. Managing agricultural landscapes through agri-environment schemes (AES) supports biodiversity and could counteract pollinator population declines. We investigated whether alterations to current AES grassland mowing regimes would increase the abundance and species richness of wild bees and hoverflies. Furthermore, we investigated the response of different nesting and feeding guilds of wild bees and hoverflies, respectively, to these regimes. The three experimental mowing regimes were: (i) first cut not before 15 June, before the beginning of summer (Swiss AES management, control meadows); (ii) first cut delayed until 15 July (delayed meadows); (iii) as for control meadows but leaving 10–20% uncut as a refuge (refuge meadows). The rationale behind the delayed and refuge mowing regimes was extending the availability of floral resources for pollinators, while also providing refugia for species that may be directly impacted by mowing. Hoverflies and wild bees were collected in 2014 and 2015, respectively, using pan-trapping and sweep-netting, once before and once after the first cut. The two collecting methods showed contrasting results. While there was no difference in the abundance or richness of wild bees between the meadows when using pan traps, following the first cut, sweep-netting resulted in a higher abundance and richness of wild bees in delayed and refuge meadows compared to control meadows. Pan-trapping detected a higher abundance of hoverflies in delayed compared to refuge meadows, whereas sweep-netting detected a higher abundance in delayed and refuge compared to control meadows, after the first cut. Saprophagous hoverflies were more abundant in the control and delayed than refuge meadows following the first cut, when sampled with pan traps. Predatory hoverflies were more abundant and species rich in delayed and refuge compared to control meadows following the first cut, when sampled by sweep-netting. Our study demonstrates that simple alterations to a common AES grassland mowing regime can enhance populations of pollinators and n |
doi_str_mv | 10.1016/j.agee.2017.01.037 |
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There is ongoing concern regarding the observed decline in pollinator populations. Managing agricultural landscapes through agri-environment schemes (AES) supports biodiversity and could counteract pollinator population declines. We investigated whether alterations to current AES grassland mowing regimes would increase the abundance and species richness of wild bees and hoverflies. Furthermore, we investigated the response of different nesting and feeding guilds of wild bees and hoverflies, respectively, to these regimes. The three experimental mowing regimes were: (i) first cut not before 15 June, before the beginning of summer (Swiss AES management, control meadows); (ii) first cut delayed until 15 July (delayed meadows); (iii) as for control meadows but leaving 10–20% uncut as a refuge (refuge meadows). The rationale behind the delayed and refuge mowing regimes was extending the availability of floral resources for pollinators, while also providing refugia for species that may be directly impacted by mowing. Hoverflies and wild bees were collected in 2014 and 2015, respectively, using pan-trapping and sweep-netting, once before and once after the first cut. The two collecting methods showed contrasting results. While there was no difference in the abundance or richness of wild bees between the meadows when using pan traps, following the first cut, sweep-netting resulted in a higher abundance and richness of wild bees in delayed and refuge meadows compared to control meadows. Pan-trapping detected a higher abundance of hoverflies in delayed compared to refuge meadows, whereas sweep-netting detected a higher abundance in delayed and refuge compared to control meadows, after the first cut. Saprophagous hoverflies were more abundant in the control and delayed than refuge meadows following the first cut, when sampled with pan traps. Predatory hoverflies were more abundant and species rich in delayed and refuge compared to control meadows following the first cut, when sampled by sweep-netting. Our study demonstrates that simple alterations to a common AES grassland mowing regime can enhance populations of pollinators and natural enemies of crop pests. Furthermore, the contrasting response of the life-history guilds indicates that promoting heterogeneous management practices within the landscape is important for supporting diverse communities, and maintaining key ecosystem services such as pollination and biocontrol.</description><identifier>ISSN: 0167-8809</identifier><identifier>EISSN: 1873-2305</identifier><identifier>DOI: 10.1016/j.agee.2017.01.037</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Abundance ; Agri-environment schemes ; Agricultural land ; Agricultural management ; Bees ; Biodiversity ; Biological control ; Communities ; Ecosystem services ; Ecosystems ; Grasslands ; Guilds ; Landscape ; Life history ; Life-history traits ; Meadows ; Mowing ; Natural enemies ; Nesting ; Netting (materials/structures) ; Pest control ; Pests ; Plant reproduction ; Pollination ; Pollinators ; Population decline ; Populations ; Refugia ; Semi-natural grassland ; Species richness ; Trapping ; Traps</subject><ispartof>Agriculture, ecosystems & environment, 2017-02, Vol.239, p.376-384</ispartof><rights>2017 Elsevier B.V.</rights><rights>Copyright Elsevier BV Feb 15, 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c372t-60f7cbc2c8d2eae083058b31ba6944d0116fa7463902565569510c49dfc879b73</citedby><cites>FETCH-LOGICAL-c372t-60f7cbc2c8d2eae083058b31ba6944d0116fa7463902565569510c49dfc879b73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Meyer, Sandro</creatorcontrib><creatorcontrib>Unternährer, Debora</creatorcontrib><creatorcontrib>Arlettaz, Raphaël</creatorcontrib><creatorcontrib>Humbert, Jean-Yves</creatorcontrib><creatorcontrib>Menz, Myles H.M.</creatorcontrib><title>Promoting diverse communities of wild bees and hoverflies requires a landscape approach to managing meadows</title><title>Agriculture, ecosystems & environment</title><description>•Pan-trapping and sweep-netting often showed contrasting results.•Abundance and richness of bees and hoverflies were generally higher in delayed and refuge than control meadows.•Feeding and nesting guilds responded differently to the mowing regimes.•Simple alterations to mowing regimes positively affected communities of key pollinator taxa.
There is ongoing concern regarding the observed decline in pollinator populations. Managing agricultural landscapes through agri-environment schemes (AES) supports biodiversity and could counteract pollinator population declines. We investigated whether alterations to current AES grassland mowing regimes would increase the abundance and species richness of wild bees and hoverflies. Furthermore, we investigated the response of different nesting and feeding guilds of wild bees and hoverflies, respectively, to these regimes. The three experimental mowing regimes were: (i) first cut not before 15 June, before the beginning of summer (Swiss AES management, control meadows); (ii) first cut delayed until 15 July (delayed meadows); (iii) as for control meadows but leaving 10–20% uncut as a refuge (refuge meadows). The rationale behind the delayed and refuge mowing regimes was extending the availability of floral resources for pollinators, while also providing refugia for species that may be directly impacted by mowing. Hoverflies and wild bees were collected in 2014 and 2015, respectively, using pan-trapping and sweep-netting, once before and once after the first cut. The two collecting methods showed contrasting results. While there was no difference in the abundance or richness of wild bees between the meadows when using pan traps, following the first cut, sweep-netting resulted in a higher abundance and richness of wild bees in delayed and refuge meadows compared to control meadows. Pan-trapping detected a higher abundance of hoverflies in delayed compared to refuge meadows, whereas sweep-netting detected a higher abundance in delayed and refuge compared to control meadows, after the first cut. Saprophagous hoverflies were more abundant in the control and delayed than refuge meadows following the first cut, when sampled with pan traps. Predatory hoverflies were more abundant and species rich in delayed and refuge compared to control meadows following the first cut, when sampled by sweep-netting. Our study demonstrates that simple alterations to a common AES grassland mowing regime can enhance populations of pollinators and natural enemies of crop pests. Furthermore, the contrasting response of the life-history guilds indicates that promoting heterogeneous management practices within the landscape is important for supporting diverse communities, and maintaining key ecosystem services such as pollination and biocontrol.</description><subject>Abundance</subject><subject>Agri-environment schemes</subject><subject>Agricultural land</subject><subject>Agricultural management</subject><subject>Bees</subject><subject>Biodiversity</subject><subject>Biological control</subject><subject>Communities</subject><subject>Ecosystem services</subject><subject>Ecosystems</subject><subject>Grasslands</subject><subject>Guilds</subject><subject>Landscape</subject><subject>Life history</subject><subject>Life-history traits</subject><subject>Meadows</subject><subject>Mowing</subject><subject>Natural enemies</subject><subject>Nesting</subject><subject>Netting (materials/structures)</subject><subject>Pest control</subject><subject>Pests</subject><subject>Plant reproduction</subject><subject>Pollination</subject><subject>Pollinators</subject><subject>Population decline</subject><subject>Populations</subject><subject>Refugia</subject><subject>Semi-natural grassland</subject><subject>Species richness</subject><subject>Trapping</subject><subject>Traps</subject><issn>0167-8809</issn><issn>1873-2305</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kMtOwzAQRS0EEqXwA6wssU7wI7ETiQ2qeEmVYAFry7EnrUMTt3bair_HUVnjzciee69nDkK3lOSUUHHf5XoFkDNCZU5oTrg8QzNaSZ4xTspzNEsimVUVqS_RVYwdSYfxaoa-P4Lv_eiGFbbuACECNr7v94MbHUTsW3x0G4sbSBc9WLz2SdRupl6A3d6F6R1vUisavQWst9vgtVnj0eNeD3o1JfegrT_Ga3TR6k2Em786R1_PT5-L12z5_vK2eFxmhks2ZoK00jSGmcoy0ECqtEHVcNpoUReFJZSKVstC8JqwUpSlqEtKTFHb1lSybiSfo7tTbhplt4c4qs7vw5C-VLQWnHPKBEsqdlKZ4GMM0KptcL0OP4oSNUFVnZqgqgmqIlQlqMn0cDJBmv_gIKhoHAwGbCJhRmW9-8_-CyXFgMU</recordid><startdate>20170215</startdate><enddate>20170215</enddate><creator>Meyer, Sandro</creator><creator>Unternährer, Debora</creator><creator>Arlettaz, Raphaël</creator><creator>Humbert, Jean-Yves</creator><creator>Menz, Myles H.M.</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7SN</scope><scope>7SS</scope><scope>7ST</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>20170215</creationdate><title>Promoting diverse communities of wild bees and hoverflies requires a landscape approach to managing meadows</title><author>Meyer, Sandro ; Unternährer, Debora ; Arlettaz, Raphaël ; Humbert, Jean-Yves ; Menz, Myles H.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c372t-60f7cbc2c8d2eae083058b31ba6944d0116fa7463902565569510c49dfc879b73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Abundance</topic><topic>Agri-environment schemes</topic><topic>Agricultural land</topic><topic>Agricultural management</topic><topic>Bees</topic><topic>Biodiversity</topic><topic>Biological control</topic><topic>Communities</topic><topic>Ecosystem services</topic><topic>Ecosystems</topic><topic>Grasslands</topic><topic>Guilds</topic><topic>Landscape</topic><topic>Life history</topic><topic>Life-history traits</topic><topic>Meadows</topic><topic>Mowing</topic><topic>Natural enemies</topic><topic>Nesting</topic><topic>Netting (materials/structures)</topic><topic>Pest control</topic><topic>Pests</topic><topic>Plant reproduction</topic><topic>Pollination</topic><topic>Pollinators</topic><topic>Population decline</topic><topic>Populations</topic><topic>Refugia</topic><topic>Semi-natural grassland</topic><topic>Species richness</topic><topic>Trapping</topic><topic>Traps</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Meyer, Sandro</creatorcontrib><creatorcontrib>Unternährer, Debora</creatorcontrib><creatorcontrib>Arlettaz, Raphaël</creatorcontrib><creatorcontrib>Humbert, Jean-Yves</creatorcontrib><creatorcontrib>Menz, Myles H.M.</creatorcontrib><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Agriculture, ecosystems & environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Meyer, Sandro</au><au>Unternährer, Debora</au><au>Arlettaz, Raphaël</au><au>Humbert, Jean-Yves</au><au>Menz, Myles H.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Promoting diverse communities of wild bees and hoverflies requires a landscape approach to managing meadows</atitle><jtitle>Agriculture, ecosystems & environment</jtitle><date>2017-02-15</date><risdate>2017</risdate><volume>239</volume><spage>376</spage><epage>384</epage><pages>376-384</pages><issn>0167-8809</issn><eissn>1873-2305</eissn><abstract>•Pan-trapping and sweep-netting often showed contrasting results.•Abundance and richness of bees and hoverflies were generally higher in delayed and refuge than control meadows.•Feeding and nesting guilds responded differently to the mowing regimes.•Simple alterations to mowing regimes positively affected communities of key pollinator taxa.
There is ongoing concern regarding the observed decline in pollinator populations. Managing agricultural landscapes through agri-environment schemes (AES) supports biodiversity and could counteract pollinator population declines. We investigated whether alterations to current AES grassland mowing regimes would increase the abundance and species richness of wild bees and hoverflies. Furthermore, we investigated the response of different nesting and feeding guilds of wild bees and hoverflies, respectively, to these regimes. The three experimental mowing regimes were: (i) first cut not before 15 June, before the beginning of summer (Swiss AES management, control meadows); (ii) first cut delayed until 15 July (delayed meadows); (iii) as for control meadows but leaving 10–20% uncut as a refuge (refuge meadows). The rationale behind the delayed and refuge mowing regimes was extending the availability of floral resources for pollinators, while also providing refugia for species that may be directly impacted by mowing. Hoverflies and wild bees were collected in 2014 and 2015, respectively, using pan-trapping and sweep-netting, once before and once after the first cut. The two collecting methods showed contrasting results. While there was no difference in the abundance or richness of wild bees between the meadows when using pan traps, following the first cut, sweep-netting resulted in a higher abundance and richness of wild bees in delayed and refuge meadows compared to control meadows. Pan-trapping detected a higher abundance of hoverflies in delayed compared to refuge meadows, whereas sweep-netting detected a higher abundance in delayed and refuge compared to control meadows, after the first cut. Saprophagous hoverflies were more abundant in the control and delayed than refuge meadows following the first cut, when sampled with pan traps. Predatory hoverflies were more abundant and species rich in delayed and refuge compared to control meadows following the first cut, when sampled by sweep-netting. Our study demonstrates that simple alterations to a common AES grassland mowing regime can enhance populations of pollinators and natural enemies of crop pests. Furthermore, the contrasting response of the life-history guilds indicates that promoting heterogeneous management practices within the landscape is important for supporting diverse communities, and maintaining key ecosystem services such as pollination and biocontrol.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.agee.2017.01.037</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Abundance Agri-environment schemes Agricultural land Agricultural management Bees Biodiversity Biological control Communities Ecosystem services Ecosystems Grasslands Guilds Landscape Life history Life-history traits Meadows Mowing Natural enemies Nesting Netting (materials/structures) Pest control Pests Plant reproduction Pollination Pollinators Population decline Populations Refugia Semi-natural grassland Species richness Trapping Traps |
title | Promoting diverse communities of wild bees and hoverflies requires a landscape approach to managing meadows |
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