通过评估群岛范围内的参照生态系统,确定大规模干旱岛屿植被恢复目标

IF 2.8 3区 环境科学与生态学 Q2 ECOLOGY
Nicolás Velasco, Anna Calle‐Loor, Patricia Jaramillo Díaz
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引用次数: 0

摘要

岛屿生态恢复在建立历史框架和参考生态系统方面面临挑战。我们的研究发生在加拉帕戈斯群岛,重点是北西摩(North Seymour,NS),它被认为是巴尔特拉岛的参照生态系统,而巴尔特拉岛却遭受了严重退化。我们对北西摩的干旱植物群落进行了评估,并与二十世纪初的记录进行了比较。第一次调查发现,NS 岛上的主要木本植物包括本地的 Bursera graveolens、Cordia lutea、Castela galapageia、Parkinsonia aculeata 和 Opuntia echios,而 Cleome viscosa 是唯一登记在册的外来物种。第二次调查将两个岛屿划分为均匀分布的地块,记录了第一次调查中五个主要物种的成体和幼体。与巴尔特拉岛相比,新南威尔士岛的群落结构更合理,物种丰富度和密度更高。Castela galapageia 在巴尔特拉岛的受干扰地区很普遍。两个岛上的幼苗再生都很少。新南威尔士整个岛屿的物种丰富度较高,而巴尔特拉只有两个区域的物种丰富度较高。共现分析表明,在两个岛上,P. aculeata 和 B. graveolens 之间都有明显的关联。不过,巴尔特拉岛的网络显示存在缺失环节,表明需要努力恢复。总之,NS 的结构化植物群落可以作为巴尔特拉恢复模式所需的参考生态系统之一。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Defining large‐scale arid island vegetation recovery targets through evaluating a reference ecosystem within an archipelago extent
Island ecological restoration presents challenges in establishing historical frames and reference ecosystems. Our study takes place in the Galapagos Islands and focuses on North Seymour (NS), recognized as a reference ecosystem for Baltra Island, which has suffered significant degradation. We assessed NS's arid plant community, comparing it with early twentieth‐century records. A first survey identified that dominant woody species on NS include native Bursera graveolens, Cordia lutea, Castela galapageia, Parkinsonia aculeata, and Opuntia echios, while Cleome viscosa is the only exotic species registered. A second survey divided both islands into evenly distributed plots, recording adults and juveniles of the five dominant species from the first survey. NS showed a structured community with higher species richness and density compared to Baltra. Castela galapageia prevailed in disturbed areas on Baltra. Juvenile regeneration was scarce on both islands. NS exhibited high species richness throughout, while Baltra had only two areas with similar high richness. Co‐occurrence analysis revealed significant associations between P. aculeata and B. graveolens on both islands. However, Baltra's network displayed missing links, indicating the need for restoration efforts. In conclusion, the structured plant community of NS can serve as one of the reference ecosystems needed for framing a restoration model for Baltra.
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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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