Promoting pollinating insects in intensive agricultural matrices: field-scale experimental manipulation of hay-meadow mowing regimes and its effects on bees.
Promoting pollinating insects in intensive agricultural matrices: field-scale experimental manipulation of hay-meadow mowing regimes and its effects on bees.
复制标题
DOI：
10.1371/journal.pone.0085635
复制
发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Arlettaz R
中科院分区：
文献类型：
--
作者：
Buri P;Humbert JY;Arlettaz R
蜜蜂是生物多样性的关键组成部分，因为它们确保了一项重要的生态系统服务：授粉。这种生态系统服务如今受到威胁，因为蜜蜂遭受农业集约化的影响。然而，蜜蜂很少从为促进农田生物多样性而制定的措施中受益，例如农业环境计划(AES)。我们在实验中测试了在广泛管理的干草草地内对割草制度进行时空修改是否可以促进蜜蜂的生长。我们采用了随机区组设计，在瑞士低地重复12次，包括三种不同的割草处理：1)第一次割草不要在6月15日之前(瑞士AES中对草甸的常规制度)；2)第一次割不要在6月15日之前，作为处理1，但留有15%的未割面积作为避难所；3)第一次割不要在7月15日之前。在植被季节(割草前后)，用平底锅诱捕了两次蜜蜂。野生蜜蜂丰富度和物种丰富度在留有未砍伐避难所的草甸中显著增加：留有未砍伐避难所的草甸有即刻(年内)和累积(一年至次年)的积极效应。在野生蜜蜂和蜜蜂身上，延迟割草的直接积极影响也是显而易见的。传统的AES可以很容易地适应这样一个简单的管理处方，它促进农田生物多样性，并可能加强授粉服务。
Bees are a key component of biodiversity as they ensure a crucial ecosystem service: pollination. This ecosystem service is nowadays threatened, because bees suffer from agricultural intensification. Yet, bees rarely benefit from the measures established to promote biodiversity in farmland, such as agri-environment schemes (AES). We experimentally tested if the spatio-temporal modification of mowing regimes within extensively managed hay meadows, a widespread AES, can promote bees. We applied a randomized block design, replicated 12 times across the Swiss lowlands, that consisted of three different mowing treatments: 1) first cut not before 15 June (conventional regime for meadows within Swiss AES); 2) first cut not before 15 June, as treatment 1 but with 15% of area left uncut serving as a refuge; 3) first cut not before 15 July. Bees were collected with pan traps, twice during the vegetation season (before and after mowing). Wild bee abundance and species richness significantly increased in meadows where uncut refuges were left, in comparison to meadows without refuges: there was both an immediate (within year) and cumulative (from one year to the following) positive effect of the uncut refuge treatment. An immediate positive effect of delayed mowing was also evidenced in both wild bees and honey bees. Conventional AES could easily accommodate such a simple management prescription that promotes farmland biodiversity and is likely to enhance pollination services.
登录
查看更多内容
影响因子：
3.5
作者：
Droege, Sam;Tepedino, Vincent J.;Conrad, Casey
通讯作者：
Conrad, Casey
影响因子：
5.5
作者：
Fontaine, Colin;Collin, Carine L.;Dajoz, Isabelle
通讯作者：
Dajoz, Isabelle
影响因子：
56.9
作者：
Biesmeijer, J. C.;Roberts, S. P. M.;Kunin, W. E.
通讯作者：
Kunin, W. E.
影响因子：
4.2
作者：
Aizen, Marcelo A.;Garibaldi, Lucas A.;Klein, Alexandra M.
通讯作者：
Klein, Alexandra M.
影响因子：
4.8
作者：
Gathmann, A;Tscharntke, T
通讯作者：
Tscharntke, T