Characterizing the environmental drivers of the abundance and distribution of Alopecurus myosuroides at a national scale.
Characterizing the environmental drivers of the abundance and distribution of Alopecurus myosuroides at a national scale.
复制标题
描述全国范围内看麦娘丰度和分布的环境驱动因素。
DOI：
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发表时间：
2021
影响因子：
4.1
通讯作者：
R. Freckleton
中科院分区：
文献类型：
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作者：
H. Hicks;J. Lambert;R. Pywell;L. Hulmes;S. Hulmes;K. Walker;D. Childs;R. Freckleton
背景
BACKGROUND
Arable weeds threaten farming and food production, impacting on productivity. Large-scale data on weed populations are typically lacking and changes are frequently undocumented until they reach problem levels. Managing the future spread of weeds requires that we understand the factors that influence current densities and distributions. In doing so, one of the challenges is to measure populations at a large enough scale in order to be able to accurately measure changes in densities and distributions. Here we analyse the density and distribution of a major weed (Alopecurus myosuroides) at a large scale. Our objectives were to: (i) develop a methodology for rapid measurement of occurrence and abundance; (ii) test hypotheses about the roles of soils and climate variation in determining densities; (iii) use this information to identify areas in which occurrence could increase in the future.
RESULTS
Populations were mapped through England over four years in 4631 locations. We also analysed UK atlas data published over the past 50 years. Densities of populations show significant inter-annual variability, however historical data show that the species has spread. We find significant impacts of soil and rainfall on densities, which increase with the proportion of heavy soils, however, decrease with increasing rainfall. Compared with independent atlas data we find that our statistical models provide good predictions of large-scale occupancy and we provide maps of current and potential densities.
CONCLUSION
Models of spread highlight the localised nature of colonisation, and this emphasises the need for management to limit dispersal. Comparisons of current, historical and potential distributions suggest sizeable habitable areas in which increases in abundance are still possible. This article is protected by copyright. All rights reserved.