Bumble bee (Bombus) distribution and diversity in Vermont, USA: a century of change
Bumble bee (Bombus) distribution and diversity in Vermont, USA: a century of change
复制标题
美国佛蒙特州大黄蜂（Bombus）的分布和多样性：一个世纪的变化
DOI：
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发表时间：
2018
影响因子：
1.9
通讯作者：
Spencer P. Hardy
中科院分区：
文献类型：
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作者：
Leif L. Richardson;K. McFarland;Sara Zahendra;Spencer P. Hardy
熊蜂（Bombus）在温带生态系统中作为传粉媒介发挥着关键作用。由于栖息地丧失、寄生虫、杀虫剂和气候变化等因素，一些北美物种的数量已经减少。在许多地区，由于缺乏历史丰度和分布的定量数据，保护工作受到阻碍，使得现状评估变得困难。 2012 年至 2014 年，在 53 名公民科学家的帮助下，我们进行了调查，以确定美国佛蒙特州各地熊蜂的状况。为了进行历史比较，我们对 13 个公共和私人收藏的大黄蜂标本进行了识别和数字化。我们的数据集包含 12,319 条记录，我们将其分为历史时期（1915-1999；n = 1669）和现代（2000-2014；n = 10,650）时期，我们的调查贡献了 94% 的现代数据。在 17 个物种中，有 4 种未检测到，4 种出现显着下降。 Rarefaction 表明，现代和历史数据集都略微低估了已知物种的丰富度、多样性和丰度，但证实了所有三个参数的大幅下降。物种数量的减少与北美东部其他地方的报告大致一致，其中包括熊属、铁熊属和松树亚属的物种。 Pyrobombus 亚属的四种物种（B. bimaculatus、B. impatiens、B. ternarius 和 B. vagans）在现代的相对丰度大大增加。道路密度、海拔和土地利用等景观因素强烈预测了某些物种的分布。物种多样性与草地呈正相关，与落叶林和混交林覆盖率呈负相关，而丰富度与常绿森林覆盖率呈正相关，与落叶林呈负相关。
Bumble bees (Bombus) play key roles as pollinators in temperate ecosystems. Some North American species have declined due to factors that include habitat loss, parasites, pesticides, and climate change. In many regions conservation is hampered by lack of quantitative data on historical abundance and distribution, making status assessments difficult. From 2012 to 2014, with help from 53 citizen scientists, we conducted surveys to determine the status of bumble bees throughout Vermont, USA. For historical comparison, we identified and digitized bumble bee specimens from 13 public and private collections. Our dataset contained 12,319 records, which we separated into historic (1915–1999; n = 1669) and modern (2000–2014; n = 10,650) periods, with our survey contributing 94% of modern data. Of 17 species, four were not detected and four showed significant declines. Rarefaction indicated that both modern and historic datasets slightly underestimated known species richness, diversity, and abundance, but confirmed a strong decline for all three parameters. Declining species broadly accorded with those reported elsewhere in eastern North America, and included those in subgenera Bombus, Fervidobombus, and Psithyrus. Four species in the subgenus Pyrobombus (B. bimaculatus, B. impatiens, B. ternarius, and B. vagans) greatly increased in relative abundance in the modern period. Landscape factors such as road density, elevation, and land use strongly predicted distribution of some species. Species diversity was correlated positively with grasslands, and negatively with deciduous and mixed forest cover, while abundance was correlated positively with evergreen forest cover, yet negatively with deciduous forest.
影响因子：
11.8
作者：
David, Arthur;Botias, Cristina;Goulson, Dave
通讯作者：
Goulson, Dave