| 项目编号: | NE/P012914/1
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| 项目名称: | Bee sensitivity to a century of agricultural land-use change. |
| 作者: | Ian Barnes
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| 承担单位: | The Natural History Museum
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| 批准年: | 2016
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| 开始日期: | 2017-01-12
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| 结束日期: | 2020-30-11
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| 资助金额: | GBP338657
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| 资助来源: | UK-NERC
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| 项目类别: | Research Grant
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| 国家: | UK
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| 语种: | 英语
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| 特色学科分类: | Ecol, biodivers. & systematics 
; (60%)
; Genetics & development 
; (30%)
; Pollution, waste & resources 
; (10%)
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| 英文摘要: | The world's natural resources have been placed under significant pressure over the past century, due to the exponential growth rate of the global human population. This has resulted in a significant increase in agricultural land-use and subsequent loss of 'natural habitats', a pattern associated with high losses in biodiversity. Declines of insect pollinators, such as bumblebees, are of particular concern as their role in maintaining floral health and diversity is vital, and as agricultural crop pollinators they possess large economic benefits. Understanding threats to these populations is therefore of high priority.
Here we take the approach that to understand future threats and solutions we must understand the past, and that to accurately predict future patterns and risks to species, we must gain a better understanding of what is causing those changes. Unfortunately, archival data on insect pollinator abundance rarely goes back more than a couple of decades, and most have been collected in a haphazard way. To fill this knowledge gap we will take a novel approach in which, using a combination of DNA sequencing, morphological and phenological (life-history data looking at seasonal activity) measures, along with experimental test of pesticide resistance, we will test whether populations experiencing different agricultural land use change intensity show signatures of population declines and adaptation to these new agricultural environments (i.e. support for a causal relationship).
Here, we will study a large collection of historical bumblebee specimens from six leading natural history museums across the UK. The morphological and genomic data represented in these specimens holds the key to determining how variation in population size, body shape and genetic diversity have changed over the last century.
Recent advances in the recovery and analysis of ancient DNA, and developments in the resolution of CT scanning, will enable us to gain unprecedented and novel insights. By working with historical samples from locations that have undergone different amounts of agricultural land use change (for example differences between the east and west of UK) we can specifically test whether temporal changes occur, rather than relying on end point data.
It is widely considered that bumblebees are threatened by two of the major factors associated with agricultural intensification: the loss of flowers leading to reduced nutritional resource, and increased exposure to pesticides. However, to our knowledge the interactive effects of these have not been experimentally tested. This project will also conduct a controlled laboratory experiment to understand how changes to nutritional availability and pesticide exposure impact on colony growth and the production of new queens and males. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/99963
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | The Natural History Museum
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| Recommended Citation: | |
Ian Barnes. Bee sensitivity to a century of agricultural land-use change.. 2016-01-01.
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