Fruit quantity and quality of strawberries benefit from enhanced pollinator abundance at hedgerows in agricultural landscapes
Fruit quantity and quality of strawberries benefit from enhanced pollinator abundance at hedgerows in agricultural landscapes
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DOI：
10.1016/j.agee.2019.01.003
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发表时间：
2019-04-01
影响因子：
6.6
通讯作者：
Westphal, Catrin
中科院分区：
文献类型：
--
作者：
Castle, Denise;Grass, Ingo;Westphal, Catrin
由于栖息地丧失、隔离和景观破碎化，动物传粉媒介正在严重减少，使作物授粉服务面临风险。树篱被反复强调为景观元素，提供筑巢和食物资源，连接破碎的栖息地，从而促进作物授粉。然而，对植物篱对作物授粉的有益和潜在的有害影响的研究仍然很少。本研究分析了传粉媒介和草食性花粉甲虫（Meligethes spp.）对草莓数量和质量的影响，这些植物分别位于森林相连的树篱、孤立的树篱和没有树篱的草缘。较高的传粉媒介丰度增加了草莓重，而花粉甲虫丰度降低了草莓重。与连接篱的草莓相比，隔离篱的草莓重量显著减少29%，草缘的草莓重量显著减少32%。种植在与森林相连的树篱上的植物生产的草莓质量更高，90%的草莓被归类为“可销售”，而只有75%的植物来自孤立的树篱，48%的植物来自草地边缘，41%来自自花授粉的对照植物的草莓被归类为可销售。因此，通过树篱增加的栖息地连通性提高了草莓的商业价值，从生长在草地边缘的植物的9.27 (sic) / 1000增加到位于森林连接的树篱的植物的14.95 （sic）。相应的，传粉者丰度在林连植物篱中最高，在草缘植物篱中最低，在孤立植物篱中居中。植物计植物的花粉甲虫丰度不受植物篱的影响。我们的研究强调了植物篱和栖息地连通性对促进农业景观授粉服务的重要性，对作物的数量和质量具有重要的经济效益。
Animal pollinators are in a serious decline due to habitat loss, isolation and landscape fragmentation, putting pollination services to crops at risk. Hedgerows have been repeatedly emphasized as landscape elements that provide nesting and food resources, connect fragmented habitats and could thus facilitate crop pollination. However, the beneficial and potentially also detrimental impacts of hedgerows on crop pollination remain poorly studied. Here, we analysed the effects of pollinators and herbivorous pollen beetles (Meligethes spp.) on quantity and quality of strawberries from phytometer plants located at forest-connected hedgerows, isolated hedgerows and on grassy margins without any hedgerows. Higher pollinator abundance increased strawberry weight, whereas pollen beetle abundance reduced strawberry weight. Strawberry weight was significantly reduced by 29% at isolated hedgerows and 32% on grassy margins, compared to berries at connected hedgerows. Plants placed at forest-connected hedgerows produced more high quality strawberries with 90% classified as "marketable", whereas only 75% of strawberries from plants at isolated hedgerows, 48% of strawberries from plants on grassy margins and 41% of strawberries from self-pollinated control plants where classified as marketable. Consequently, increased habitat connectivity through hedgerows enhanced the commercial value of strawberries from 9.27 (sic) per 1000 strawberries for plants grown on grassy margins to 14.95 (sic) for plants located at forest-connected hedgerows. Correspondingly, pollinator abundance was highest on phytometer plants at forest-connected hedgerows, lowest on grassy margins and intermediate at isolated hedgerows. Pollen beetle abundance on phytometer plants was not affected by hedgerows.Our study highlights the importance of hedgerows and habitat connectivity for promoting pollination services in agricultural landscapes, with economically important benefits for crop quantity and quality.