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Agriculture causes homogenization of plant-feeding nematode communities at the regional scale
Journal of Applied Ecology ( IF 5.0 ) Pub Date : 2021-09-12 , DOI: 10.1111/1365-2664.14025
Antonio Archidona‐Yuste 1, 2 , Thorsten Wiegand 1, 2 , Nico Eisenhauer 2, 3 , Carolina Cantalapiedra‐Navarrete 4 , Juan E. Palomares‐Rius 4 , Pablo Castillo 4
Affiliation  

  1. An emerging research line in conservation ecology addresses how environmental change drivers may cause the biotic homogenization of ecological communities by shifts in species diversity and community composition. While the drivers have been explored in unmanaged ecosystems and managed agricultural systems, this issue has received limited attention in regard to a key soil bioindicator organisms, soil nematodes.
  2. In this study, we evaluated the effect of land-use change and intensification on the diversity of plant-feeding nematodes (PFN) though taxonomic and functional measures of alpha and beta diversity. We selected olive tree farms in southern Spain as the study system, given the wide distribution of wild forms in unmanaged systems and cultivated forms in agricultural systems, thus providing the opportunity to assess the effects of land-use intensity.
  3. Notably, our study revealed that the conversion from natural to agricultural systems and even moderate increases in land-use intensity caused a significant biotic homogenization by enhancing the functional similarities of PFN communities. Our study emphasizes the key role of body size in structuring nematode communities in response to land-use type and intensity.
  4. Synthesis and applications. The importance of soil nematodes in soil processes is well known. We show that land-use intensification reduces soil nematode diversity. Our study has important implications for the development of management strategies that foster soil biodiversity conservation such as no or minimal tillage and logging, vegetative covers and the maintenance of natural habitat.


中文翻译:

农业导致区域范围内以植物为食的线虫群落同质化

  1. 保护生态学中一个新兴的研究方向解决了环境变化驱动因素如何通过物种多样性和群落组成的变化导致生态群落的生物同质化。虽然已经在未管理的生态系统和管理的农业系统中探索了驱动因素,但在关键的土壤生物指示生物——土壤线虫方面,这个问题受到的关注有限。
  2. 在这项研究中,我们通过 alpha 和 beta 多样性的分类学和功能测量评估了土地利用变化和集约化对植物性线虫 (PFN) 多样性的影响。我们选择西班牙南部的橄榄树农场作为研究系统,因为野生形式在非管理系统中的广泛分布和农业系统中的栽培形式,从而提供了评估土地利用强度影响的机会。
  3. 值得注意的是,我们的研究表明,从自然系统到农业系统的转变,甚至土地利用强度的适度增加,通过增强 PFN 群落的功能相似性,导致了显着的生物同质化。我们的研究强调了体型在构建线虫群落以响应土地利用类型和强度方面的关键作用。
  4. 合成与应用。土壤线虫在土壤过程中的重要性是众所周知的。我们表明土地利用集约化降低了土壤线虫的多样性。我们的研究对制定促进土壤生物多样性保护的管理策略具有重要意义,例如免耕或最少耕作和伐木、植被覆盖和自然栖息地的维护。
更新日期:2021-09-12
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