Turnover in floral composition explains species diversity and temporal stability in the nectar supply of urban residential gardens
Turnover in floral composition explains species diversity and temporal stability in the nectar supply of urban residential gardens
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花卉成分的更新解释了城市住宅花园花蜜供应的物种多样性和时间稳定性
DOI：
10.1111/1365-2664.14094
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发表时间：
2022
影响因子：
5.7
通讯作者：
Tew N
中科院分区：
文献类型：
--
作者：
Tew N
住宅花园是全世界昆虫传粉者的宝贵栖息地，但个体园艺实践的差异会大大影响其花卉组成。了解花园的花卉资源供应在空间和时间上的变化是很重要的，这样我们就可以制定基于证据的管理建议，以支持城镇和城市的传粉者保护。我们调查了英国布里斯托市的59个住宅花园，从3月到10月每月一次。对于472个花园的调查，我们将花卉丰富度与花蜜糖数据相结合，以量化每个花园的花蜜产量，调查花园花蜜供应的数量，时间稳定性，多样性和组成。（2至1 662克），花蜜产量在较富裕的社区较高，但在较大的花园中则不然。花蜜供应高峰在7月（仲夏），当更多的植物类群在花，但时间模式各不相同个别花园。在更大的空间尺度上，时间变异性通过组合效应平均化，这意味着在城市景观中的许多花园中觅食的昆虫授粉者全年都可以获得相对稳定和持续的花蜜供应。花园中物种组成的更替导致了极高的整体植物丰富度，有636个分类群记录开花。花蜜供应由非本地人主导，提供所有花蜜糖的91%，而灌木是主要的植物生命形式，有助于花蜜生产（58%）。花蜜中三分之二的糖只对相对专业的传粉者有效，剩下三分之一的糖对所有传粉者都有效。合成与应用通过测量住宅花园中的花蜜供应，我们的研究表明，影响花园质量的传粉者友好管理比花园的大小更重要，让每个园丁都有机会为城市地区的传粉者保护做出贡献。对于有兴趣增加其土地对觅食授粉者的价值的园丁，我们建议种植具有互补开花期的花蜜丰富的灌木，并在夏末和秋季优先种植具有开放结构的花卉。
Residential gardens are a valuable habitat for insect pollinators worldwide, but differences in individual gardening practices substantially affect their floral composition. It is important to understand how the floral resource supply of gardens varies in both space and time so we can develop evidence‐based management recommendations to support pollinator conservation in towns and cities.We surveyed 59 residential gardens in the city of Bristol, UK, at monthly intervals from March to October. For each of 472 garden surveys, we combined floral abundances with nectar sugar data to quantify the nectar production of each garden, investigating the magnitude, temporal stability, and diversity and composition of garden nectar supplies.We found that individual gardens differ markedly in the quantity of nectar sugar they supply (from 2 to 1,662 g), and nectar production is higher in more affluent neighbourhoods, but not in larger gardens. Nectar supply peaks in July (mid‐summer), when more plant taxa are in flower, but temporal patterns vary among individual gardens. At larger spatial scales, temporal variability averages out through the portfolio effect, meaning insect pollinators foraging across many gardens in urban landscapes have access to a relatively stable and continuous supply of nectar through the year.Turnover in species composition among gardens leads to an extremely high overall plant richness, with 636 taxa recorded flowering. The nectar supply is dominated by non‐natives, which provide 91% of all nectar sugar, while shrubs are the main plant life form contributing to nectar production (58%). Two‐thirds of nectar sugar is only available to relatively specialised pollinators, leaving just one‐third that is accessible to all.Synthesis and applications. By measuring nectar supply in residential gardens, our study demonstrates that pollinator‐friendly management, affecting garden quality, is more important than the size of a garden, giving every gardener an opportunity to contribute to pollinator conservation in urban areas. For gardeners interested in increasing the value of their land to foraging pollinators, we recommend planting nectar‐rich shrubs with complementary flowering periods and prioritising flowers with an open structure in late summer and autumn.
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影响因子：
7
作者：
Goddard, Mark A.;Dougill, Andrew J.;Benton, Tim G.
通讯作者：
Benton, Tim G.
城市家庭花园（X）：范围
影响因子：
5.2
作者：
Alison Loram;J. Tratalos;P. Warren;K. Gaston
通讯作者：
K. Gaston
影响因子：
5.7
作者：
Carvalheiro, L. G.;Barbosa, E. R. M.;Memmott, J.
通讯作者：
Memmott, J.
与农业到城市梯度授粉相关的赏花网络结构
DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
P. Theodorou;P. Theodorou;Karoline Albig;Rita Radzevičiūtė;J. Settele;O. Schweiger;T. Murray;R. Paxton
通讯作者：
R. Paxton
影响因子：
5.9
作者：
Lindemann-Matthies, Petra;Marty, Thomas
通讯作者：
Marty, Thomas