美国亚热带牧场蜣螂除粪的经济价值

IF 3 2区 环境科学与生态学 Q2 ECOLOGY
Roisin Stanbrook-Buyer , Mahadev Bhat , Joshua R. King
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引用次数: 0

摘要

在牲畜管理系统中,蜣螂快速清除牛粪对牧场恢复放牧起着至关重要的作用,而这些牧场通常会因为牛粪污染而丧失。因此,牛粪清除是一个生态系统过程,与具有潜在价值的服务有着既定的联系。我们重点研究了两种蜣螂丰度情况下的粪便清除。然后,我们计算了在每种情况下蜣螂对美国亚热带牧场粪便退化的作用的经济价值,方法是衡量因粪便闷死而限制新牧草生长的相关成本,以及因蜣螂介导的粪便分解而获得的牧草量。我们发现,如果粪便不受蜣螂的控制,它将以平均每天 3.75 克的速度自然分解,而在蜣螂数量较多的牧场,粪便将以每天 10.73 克的速度腐烂。我们的研究表明,在每种情况下,牛粪分解的经济效益都与牛牧场中蜣螂的存在和丰度水平直接相关,例如,在蜣螂丰度低和蜣螂丰度高的情况下,分别可增加 1,131 头和 1,676 头奶牛的饲养面积。这相当于在蜣螂丰度较低的佛罗里达亚热带畜牧系统中每年增加 918,688 美元的收入,而在蜣螂丰度较高的牧场中每年增加 1,360,770 美元的收入。尽管蜣螂在畜牧系统中非常重要,但由于农用化学品的广泛使用,蜣螂的数量岌岌可危。减少农用化学品的使用并在畜牧系统中引入生物多样性友好型实践,对于保护蜣螂以及蜣螂在劳作景观中提供的生态功能非常重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Economic value of dung removal by dung beetles in US sub-tropical pastures

In livestock management systems, the rapid removal of cattle dung by dung beetles plays an essential role in returning areas of pasture to grazing which normally would be lost because of dung contamination. Thus, dung removal is an ecosystem process with established links to services with potentially valuable outcomes. We focused on dung removal under two dung beetle abundance scenarios. We then calculated the economic value of dung beetle action on dung degradation in US sub-tropical pasturelands under each scenario by measuring the costs associated with restriction of new forage growth by dung pat smothering, and the amount of forage gained because of dung beetle mediated dung decomposition. We found if dung is left unmanipulated by dung beetles, it would naturally decompose at an average rate of 3.75 g per day, and dung in pastures with a high abundance of dung beetles would decay at 10.73 g per day. We show the economic benefit of dung decomposition under each scenario is directly related to both the presence and abundance levels of dung beetles in cattle pastures, for instance, resulting in additional grass area to become available to raise 1,131 cows and 1,676 cows under low dung beetle abundances and under high dung beetle abundances, respectively. This amounts to an additional income of USD 918,688 per year in Florida sub-tropical livestock systems containing low abundances of dung beetles and an income of USD 1,360,770 per year for pastures sustaining a higher abundances of dung beetles. Despite their importance in livestock systems dung beetle populations are imperiled by the widespread use of agrochemicals. Reducing agrochemical usage and introducing biodiversity-friendly practices in livestock systems will be important for conserving dung beetles and the ecological functions that dung beetles provide in working landscapes.

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来源期刊
Basic and Applied Ecology
Basic and Applied Ecology 环境科学-生态学
CiteScore
6.90
自引率
5.30%
发文量
103
审稿时长
10.6 weeks
期刊介绍: Basic and Applied Ecology provides a forum in which significant advances and ideas can be rapidly communicated to a wide audience. Basic and Applied Ecology publishes original contributions, perspectives and reviews from all areas of basic and applied ecology. Ecologists from all countries are invited to publish ecological research of international interest in its pages. There is no bias with regard to taxon or geographical area.
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