多树种种植能否减轻非生物压力,从而加强秃头柏的恢复?

IF 2.8 3区 环境科学与生态学 Q2 ECOLOGY
Victoria S. Ellis, Taylor M. Sloey
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引用次数: 0

摘要

恢复研究人员和从业人员都主张采用以生态理论和原则为依据的新型恢复方法,以提高实现恢复目标的可能性。林地湿地恢复历来侧重于创造非生物条件,以支持所需物种的耐受阈值,但压力梯度假说为潜在的新策略提供了指导,即利用生物相互作用来改善具有压力的非生物条件。在本研究中,我们测试了多物种种植方法是否可用于提高目标恢复树种秃柏在多个非生物梯度上的存活和生长。我们进行了一项全因子对照温室实验,该实验操纵了两个物种(秃柏和软蔺草)之间的地上和地下相互作用,以及光照可用性和淹没深度。我们的研究结果表明,在任何暴露压力组合下,将秃柏幼苗与软蔺草共同种植都不会增加树木的生物量产量或生长指标(如茎高和叶面积)。重要的是,我们发现全日照对与树苗健康和光合作用能力相关的功能特征有负面影响。由于光照很少是湿地生态系统恢复的重点,而退化的森林湿地或恢复地点通常都有开阔的树冠,因此我们的研究结果对实践者来说非常重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Can multi‐species plantings alleviate abiotic stressors to enhance Bald cypress restoration?
Restoration researchers and practitioners alike advocate for novel restoration approaches, informed by ecological theories and principles, to enhance the likelihood of meeting restoration goals. Forested wetland restoration has historically focused on creating abiotic conditions that support the tolerance thresholds of desired species, but the stress gradient hypothesis provides guidance for potential new strategies that use biotic interactions to ameliorate stressful abiotic conditions. In this study, we tested whether multi‐species planting approaches can be used to enhance the survival and growth of a target restoration tree species, Bald cypress, along multiple abiotic gradients. We conducted a fully factorial controlled greenhouse experiment which manipulated above‐ and belowground interactions between two species (Bald cypress and Soft rush), as well as light availability and depth of inundation. Our findings showed that co‐planting Bald cypress seedlings with Soft rush did not increase tree biomass production or growth metrics (e.g. stem height and leaf area) under any exposed stress combination. Importantly, we found that full‐sun irradiance negatively impacted functional traits associated with the tree seedlings' health and ability to photosynthesize. Our findings are important for consideration by practitioners as light is rarely the focus of wetland ecosystem restoration and degraded forested wetlands or restoration sites often have open canopies.
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来源期刊
Restoration Ecology
Restoration Ecology 环境科学-生态学
CiteScore
6.50
自引率
15.60%
发文量
226
审稿时长
12-24 weeks
期刊介绍: Restoration Ecology fosters the exchange of ideas among the many disciplines involved with ecological restoration. Addressing global concerns and communicating them to the international research community and restoration practitioners, the journal is at the forefront of a vital new direction in science, ecology, and policy. Original papers describe experimental, observational, and theoretical studies on terrestrial, marine, and freshwater systems, and are considered without taxonomic bias. Contributions span the natural sciences, including ecological and biological aspects, as well as the restoration of soil, air and water when set in an ecological context; and the social sciences, including cultural, philosophical, political, educational, economic and historical aspects. Edited by a distinguished panel, the journal continues to be a major conduit for researchers to publish their findings in the fight to not only halt ecological damage, but also to ultimately reverse it.
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