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10 results for “Crop pollination service”
Data from: Evaluating the taxa that provide shared pollination services across multiple crops and regions
Many pollinator species visit multiple crops in multiple regions, yet we know little about their pollination service provisioning at local and regional scales. We investigated the floral visitors (n = 13,200), their effectiveness (n = 1718 single visits) and response to landscape composition across three crops avocado, mango and macadamia within a single growing region (1 year), a single crop (3 years) and across different growing regions in multiple years. In total, eight wild visitor groups were shared across all three crops. The network was dominated by three pollinators, two bees (Apis mellifera and Tetragonula spp.) and a fly, Stomorhina discolour. The visitation network for the three crops was relatively generalised but with the addition of pollen deposition data, specialisation increased. Sixteen managed and wild taxa were consistently present across three years in avocado, yet their contribution to annual network structure varied. Node specialisation (d') analyses indicated many individual orchard sites across each of the networks were significantly more specialised compared to that predicted by null models, suggesting the presence of site-specific factors driving these patterns. Identifying the taxa shared across multiple crops, regions and years will facilitate the development of specific pollinator management strategies to optimize crop pollination services in horticultural systems.
Functional trait mismatch between native and introduced bee pollinators servicing a global fruit crop
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Data from: Evaluating the taxa that provide shared pollination services across multiple crops and regions
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Data from: Crop pollination services: complementary resource use by social vs solitary bees facing crops with contrasting flower supply
<p>1. Many farmers are facing high economic risks if pollinator declines continue or temporal and spatial variation in wild bee communities cause reduced pollination services. Co-flowering crops might compete for pollinators, while they also might facilitate the delivery of pollination services. This rarely studied topic is of particular interest with respect to the foraging decisions of bees from different functional groups and when more sparsely and mass-flowering crops are in bloom at the same time.</p> <p>2. The abundance of honey bees, bumble bees and solitary bees in strawberry fields was quantified with transect walks along a gradient of oilseed rape (OSR) availability (product of OSR land cover and temporally changing OSR flower cover). We established a pollination experiment with pollination treatments (open-, wind- and self-pollination) to study the effects of insect pollination on strawberry fruit weight and quality.</p> <p>3. Changes in OSR availability exhibited contrasting effects on social versus solitary bees in strawberry fields. Bumble bees and honey bees were less abundant in strawberry fields when OSR availability was high, whereas solitary bees were facilitated. With more strawberry flowers we found more bees in general.</p> <p>4. When flowers were open-pollinated they resulted in heavier fruits with better commercial grades compared to wind-and self-pollinated flowers. A higher bee abundance enhanced the strawberry fruit weight and quality but depended on flower order and variety.</p> <p>5.<i> Synthesis and applications</i>. Sparsely flowering crops may compete with mass-flowering crops for social bee pollinators while solitary pollinators in the field might be even facilitated. To ensure best fruit weight and quality it can be beneficial to support bee abundance in the field. While some social and solitary bee species can be managed for pollination services, wild bees, in particular solitary species, should be conserved and promoted for stable crop pollination services in dynamic agricultural landscapes.</p>
Data from: Crop pollination services: complementary resource use by social vs solitary bees facing crops with contrasting flower supply
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Adjacent crop type impacts potential pollinator communities and their pollination services in remnants of natural vegetation.
<p><em><span>Aim:</span></em><span> Pollination plays a crucial role in the conservation of many plant species persisting in fragmented, human-dominated landscapes. Pollinators are known to be instrumental in maintaining genetic diversity and metapopulation dynamics for many plant species and are important for providing ecological services that are essential in agricultural landscapes where populations of native plants are highly isolated. Numerous studies have explored the value of remnant native vegetation for supporting pollination services to crop species; yet the effect of mass-flowering crops on the pollinator communities and the pollination services they provide to native plant communities persisting in fragmented landscapes are less well-understood. Here, we</span><span> assess the influence of the presence and phenology of a mass-flowering crop to pollinator community structure, abundance and pollen load composition in remnant vegetation in complex agricultural landscapes. </span></p> <p><em><span>Location:</span></em><span> South-west Western Australia, Australia.</span></p> <p><em><span>Methods:</span></em><span> </span>We recorded the composition and abundance of insect flower visitors and their pollen loads in isolated remnants of York gum-Jam woodlands adjacent to canola (insect-attracting) or wheat (non-insect-attracting) fields over two years. </p> <p><em>Results:</em> All bees were much more sensitive to adjacent crop type (neighbouring canola or wheat) than non-bee pollinators. Honeybees were the most abundant pollinators in canola fields during peak flowering. Honeybee abundance increased in canola-adjacent reserves post-canola bloom, potentially indicating a movement into reserves as crop flowering waned. Native bees were the most diverse in remnant vegetation. Pollen loads of native bees were more mixed (increased pollen richness and evenness) when sampled next to canola fields compared to wheat fields. </p> <p><em>Main conclusion:</em> The availability of potential insect pollinators to remnant wildflower communities in agricultural landscapes is context dependent. Whether sampled communities were adjacent to wheat or canola in a landscape significantly impacted the abundance of potential pollinators in certain landscape elements, but not others, and the composition of pollen loads carried by these insects. Results offer novel insights about the influence of landscape context on <span>pollinator communities and the potential pollination services available for the conservation of native plant species in highly fragmented agricultural landscapes.</span></p>
Data from: Pollinator body size mediates the scale at which land use drives crop pollination services
1. Ecosystem services to agriculture, such as pollination, rely on natural areas adjacent to farmland to support organisms that provide services. Native insect pollinators depend on natural or semi-natural land surrounding farms for nesting and alternative foraging resources. Despite interest in conserving pollinators through habitat restoration, the scale at which land use affects pollinators and thus crop pollination services is not well understood. 2. We measured abundance of native, wild bee pollinators and the pollination services they provided to highbush blueberry Vaccinium corymbosum L. crops at 16 sites that varied in the proportion of surrounding agricultural land cover at both the field scale (300 m radius) and the landscape scale (1500 m radius). We designed our study such that agricultural land cover at the field scale was uncorrelated with agricultural cover at the landscape scale across sites. We used model selection to determine which spatial scale better predicted aggregate bee abundance, abundance of large versus small bees, and crop pollination services. 3. We found that, overall, bees responded more strongly to farm-scale than to landscape-scale land cover, but the scale at which land cover had the strongest effect varied by bee body size. Large bees showed a negative response to increasing agricultural cover at both scales, but were most strongly affected by the landscape scale. Small bees were negatively affected by agricultural land cover but only at the farm scale, while they had a small positive response to agricultural cover at the landscape scale. 4. Aggregate pollination services from native bees were more strongly influenced by local agricultural cover, due to the combined effects of both large and small bees responding at that scale. 5. Synthesis and applications. Bee abundance and pollination services were strongly determined by farm-scale agricultural cover, suggesting that farm-scale set-asides may provide significant benefits to pollination services. Further, we found that pollinators respond differently to land use depending on body size, but all groups of bees benefit from decreasing agricultural cover at the farm scale. Therefore, small-scale modifications to habitat can have significant impacts on both pollinator abundance and pollination services to crop plants.
Data from: Pollinator body size mediates the scale at which land use drives crop pollination services
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The effectiveness of flower strips and hedgerows on pest control, pollination services and crop yield: a quantitative synthesis
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Adjacent crop type impacts potential pollinator communities and their pollination services in remnants of natural vegetation.
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