Rising atmospheric CO2 is reducing the protein concentration of a floral pollen source essential for North American bees
Rising atmospheric CO2 is reducing the protein concentration of a floral pollen source essential for North American bees
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大气中二氧化碳含量的上升正在降低北美蜜蜂所必需的花粉来源的蛋白质浓度
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
H. W. Polley
中科院分区：
文献类型：
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作者：
Lewis H. Ziska;Jeffery S. Pettis;J. Edwards;Jillian E. Hancock;M. Tomecek;Andrew Clark;J. Dukes;Irakli Loladze;H. W. Polley
目前，有实质性的证据表明，农业上重要的粮食作物的营养成分将随着大气中二氧化碳含量的上升而减少。然而，钙诱导的营养质量下降是否也发生传粉动物的食物来源是未知的。一枝黄花（Solidago spp.）花粉是一种广泛可用的秋季食物来源，养蜂学家普遍认为这是本地蜜蜂（例如熊蜂属）所必需的。和蜜蜂（Apis mellifera）的健康和冬季生存。使用从史密森尼自然历史博物馆获得的花卉收藏品，我们量化了Ca诱导的加拿大一枝黄花（加拿大一枝黄花）花粉蛋白浓度的时间变化，加拿大一枝黄花是最广泛的一枝黄花分类群，来自1842-2014年期间在美国和加拿大南部收集的数百个样品（即Ca约为1000 - 1000）。280至398 ppm）。此外，我们还进行了为期2年的现场试验。canadensis种群沿着一个连续的钙梯度从约280至500 ppm。历史数据表明，最近增加的钙和花粉蛋白质浓度的减少（r2 = 0.81）之间的强显着相关性。实验数据证实了花粉蛋白质浓度的这种降低，并表明随着Ca在短期内继续上升，即达到500 ppm（r2 = 0.88），这种降低将持续下去。虽然需要更多的数据来量化加拿大一枝黄花蛋白质浓度降低对蜜蜂健康和种群稳定性的后续影响，但这些结果首次表明，增加钙可以降低北美蜜蜂广泛使用的花花粉来源的蛋白质含量。
At present, there is substantive evidence that the nutritional content of agriculturally important food crops will decrease in response to rising levels of atmospheric carbon dioxide, Ca. However, whether Ca-induced declines in nutritional quality are also occurring for pollinator food sources is unknown. Flowering late in the season, goldenrod (Solidago spp.) pollen is a widely available autumnal food source commonly acknowledged by apiarists to be essential to native bee (e.g. Bombus spp.) and honeybee (Apis mellifera) health and winter survival. Using floral collections obtained from the Smithsonian Natural History Museum, we quantified Ca-induced temporal changes in pollen protein concentration of Canada goldenrod (Solidago canadensis), the most widespread Solidago taxon, from hundreds of samples collected throughout the USA and southern Canada over the period 1842–2014 (i.e. a Ca from approx. 280 to 398 ppm). In addition, we conducted a 2 year in situ trial of S. canadensis populations grown along a continuous Ca gradient from approximately 280 to 500 ppm. The historical data indicated a strong significant correlation between recent increases in Ca and reductions in pollen protein concentration (r2 = 0.81). Experimental data confirmed this decrease in pollen protein concentration, and indicated that it would be ongoing as Ca continues to rise in the near term, i.e. to 500 ppm (r2 = 0.88). While additional data are needed to quantify the subsequent effects of reduced protein concentration for Canada goldenrod on bee health and population stability, these results are the first to indicate that increasing Ca can reduce protein content of a floral pollen source widely used by North American bees.
影响因子：
64.8
作者：
Myers SS;Zanobetti A;Kloog I;Huybers P;Leakey AD;Bloom AJ;Carlisle E;Dietterich LH;Fitzgerald G;Hasegawa T;Holbrook NM;Nelson RL;Ottman MJ;Raboy V;Sakai H;Sartor KA;Schwartz J;Seneweera S;Tausz M;Usui Y
通讯作者：
Usui Y