Replacing low-intensity cattle pasture with oil palm conserves dung beetle functional diversity when paired with forest protection.
Replacing low-intensity cattle pasture with oil palm conserves dung beetle functional diversity when paired with forest protection.
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当与森林保护相结合时，用油棕取代低强度的牛牧场可以保留粪甲虫的功能多样性。
DOI：
10.1016/j.jenvman.2021.112009
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发表时间：
2021
影响因子：
8.7
通讯作者：
Davies RW
中科院分区：
文献类型：
--
作者：
Davies RW
满足对油棕榈日益增长的需求，同时尽量减少热带生物多样性和相关生态系统功能的损失，是一项核心的保护挑战。一个潜在的解决方案是，在保护附近的热带雨林的同时，将高产作物集中在目前产量较低的农田上，以加强生态系统功能的提供。一个关键问题是，这种解决方案将如何影响无脊椎动物的功能多样性。我们将重点放在哥伦比亚大草原的油棕榈树上，那里的种植园正在取代改良的牛场和森林碎片，以及在养分循环和次级种子传播中发挥关键作用的屎甲虫。结果表明，油棕榈林的功能丰富度和功能多样性大于牛牧场，油棕榈林和残留林的功能指标没有差异。油棕榈林中粪甲虫的丰度类群分布更接近于森林而不是牧场，草地上最小和最大的粪甲虫数量较少。在油棕榈和森林中，挖隧道和滚动粪便甲虫的丰度没有差异，而较高的森林覆盖率增加了油棕榈景观中白天取食和多面手取食的甲虫的丰度。这表明，优先发展低产牧场的农业将对功能多样性产生积极影响，并突出了森林保护的必要性，以维持农业景观中的生态系统功能。
Meeting rising demand for oil palm whilst minimizing the loss of tropical biodiversity and associated ecosystem functions is a core conservation challenge. One potential solution is focusing the expansion of high-yielding crops on presently low-yielding farmlands alongside protecting nearby tropical forests that can enhance provision of ecosystem functions. A key question is how this solution would impact invertebrate functional diversity. We focus on oil palm in the Colombian Llanos, where plantations are replacing improved cattle pastures and forest fragments, and on dung beetles, which play key functional roles in nutrient cycling and secondary seed dispersal. We show that functional richness and functional diversity of dung beetles is greater in oil palm than in cattle pasture, and that functional metrics did not differ between oil palm and remnant forest. The abundance-size class profile of dung beetles in oil palm was more similar to forest than to pasture, which had lower abundances of the smallest and largest dung beetles. The abundance of tunneling and rolling dung beetles did not differ between oil palm and forest, while higher forest cover increased the abundance of diurnal and generalist-feeding beetles in oil palm landscapes. This suggests that prioritizing agricultural development on low-yielding cattle pasture will have positive effects on functional diversity and highlights the need for forest protection to maintain ecosystem functioning within agricultural landscapes.
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