A case for associational resistance: Apparent support for the stress gradient hypothesis varies with study system,Ecology Letters

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A case for associational resistance: Apparent support for the stress gradient hypothesis varies with study system
Ecology Letters ( IF 7.6 ) Pub Date : 2021-11-13 , DOI: 10.1111/ele.13917
Amy E Adams ₁ , Elizabeth M Besozzi ₂ , Golya Shahrokhi ₂ , Michael A Patten ₃

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According to the stress gradient hypothesis (SGH), ecological interactions between organisms shift positively as environmental stress increases. In the case of associational resistance, habitat is modified to ameliorate stress, benefitting other organisms. The SGH is contentious due to conflicting evidence and theoretical perspectives, so we adopted a meta-analytic approach to determine if it is widely supported across a variety of contexts, including different kingdoms, ecosystems, habitats, interactions, stressors, and life history stages. We developed an extensive list of Boolean search criteria to search the published ecological literature and successfully detect studies that both directly tested the hypothesis, and those that were relevant but never mentioned it. We found that the SGH is well supported by studies that feature bacteria, plants, terrestrial ecosystems, interspecific negative interactions, adults, survival instead of growth or reproduction, and drought, fire, and nutrient stress. We conclude that the SGH is indeed a broadly relevant ecological hypothesis that is currently held back by cross-disciplinary communication barriers. More SGH research is needed beyond the scope of interspecific plant competition, and more SGH research should feature multifactor stress. There remains a need to account for positive interactions in scientific pursuits, such as associational resistance in tests of the SGH.

中文翻译：

关联阻力的一个案例：对应力梯度假设的明显支持因研究系统而异

根据压力梯度假设 (SGH)，随着环境压力的增加，生物之间的生态相互作用会发生正向变化。在联合抵抗的情况下，栖息地被修改以减轻压力，使其他生物受益。由于证据和理论观点相互矛盾，SGH 存在争议，因此我们采用元分析方法来确定它是否在各种背景下得到广泛支持，包括不同的王国、生态系统、栖息地、相互作用、压力源和生活史阶段。我们开发了一个广泛的布尔搜索标准列表来搜索已发表的生态文献，并成功检测到直接测试假设的研究，以及相关但从未提及的研究。我们发现 SGH 得到了以细菌、植物、陆地生态系统、种间负面相互作用、成虫、生存而不是生长或繁殖、干旱、火灾和营养压力。我们得出结论，SGH 确实是一个广泛相关的生态假设，目前受到跨学科交流障碍的阻碍。需要更多的 SGH 研究超出种间植物竞争的范围，更多的 SGH 研究应该以多因素胁迫为特征。仍然需要考虑科学追求中的积极相互作用，例如 SGH 测试中的关联阻力。我们得出结论，SGH 确实是一个广泛相关的生态假设，目前受到跨学科交流障碍的阻碍。需要更多的 SGH 研究超出种间植物竞争的范围，更多的 SGH 研究应该以多因素胁迫为特征。仍然需要考虑科学追求中的积极相互作用，例如 SGH 测试中的关联阻力。我们得出结论，SGH 确实是一个广泛相关的生态假设，目前受到跨学科交流障碍的阻碍。需要更多的 SGH 研究超出种间植物竞争的范围，更多的 SGH 研究应该以多因素胁迫为特征。仍然需要考虑科学追求中的积极相互作用，例如 SGH 测试中的关联阻力。

更新日期：2021-12-10

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