Structural and functional effects of global invasion pressure on benthic marine communities—patterns, challenges and priorities

IF 4.6 2区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Diversity and Distributions Pub Date : 2024-05-09 DOI:10.1111/ddi.13838

Anastasija Zaiko, Alice Cardeccia, James T. Carlton, Graeme F. Clark, Joel C. Creed, Ian Davidson, Oliver Floerl, Bella Galil, Edwin Grosholz, Grant A. Hopkins, Emma L. Johnston, Jonne Kotta, Agnese Marchini, Henn Ojaveer, Gregory Ruiz, Thomas W. Therriault, Graeme J. Inglis

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引用次数: 0

Abstract

Aim

Retrospective (pre- vs. post-invasion) and cross-sectional comparisons of ecosystems exposed to high and low bioinvasion pressure, provide an alternative approach to evaluate shifts in biological communities associated with non-indigenous species (NIS) introductions. In this study, we aimed to examine general patterns of change in community composition, structure and function in six well-studied and globally distributed marine ecosystems that had documented histories of biological invasions.

Location

Global.

Methods

By considering a range of regional datasets and different sampling approaches, we evaluated trends within and among ecosystems by comparing paired measures of community and functional structure in either space or time.

Results

Our analyses revealed different patterns of structural and functional change at ecosystem scales, but direct comparisons across regions were hindered by confounding effects of study designs and other drivers of change. The most prominent shifts in community composition were observed in the retrospective studies, characterised by the greatest relative contribution of NIS. No uniform pattern of change in functional metrics was observed across study regions. However, functional evenness and dispersion showed a tendency to increase in systems under higher invasion pressure, refuting the hypothesis of selective accumulation of specific traits and functional homogenisation within ecosystems exposed to high invasion pressure.

Main Conclusions

Accumulation of NIS within broader communities can be a subtle process, with inherent spatial and temporal variability. Nonetheless, not only do species' proportional contributions to communities change over time in areas subjected to high bioinvasion pressure, but trait profiles can incrementally shift, which alters the original ecology of an area. Planned, long-term studies that incorporate a range of measures of environmental drivers and ecosystem response are crucial for better understanding of cumulative, community-level and ecosystem-scale change associated with biological invasions.

Abstract Image

查看原文本刊更多论文

全球入侵压力对海洋底栖生物群落的结构和功能影响--模式、挑战和优先事项

目的对受到高和低生物入侵压力的生态系统进行回顾性（入侵前与入侵后）和横断面比较，为评估与非土著物种（NIS）引入相关的生物群落变化提供了另一种方法。在这项研究中，我们的目标是在六个经过充分研究且分布于全球的海洋生态系统中，研究群落组成、结构和功能变化的一般模式，这些生态系统都有生物入侵的历史记录。结果我们的分析揭示了生态系统尺度上结构和功能变化的不同模式，但由于研究设计和其他变化驱动因素的混杂影响，不同区域间的直接比较受到阻碍。在回顾性研究中观察到的群落组成变化最为显著，其特点是NIS的相对贡献最大。不同研究区域的功能指标变化模式并不一致。然而，在入侵压力较高的系统中，功能均匀度和分散度呈上升趋势，这反驳了在面临高入侵压力的生态系统中特定性状选择性积累和功能同质化的假说。然而，在生物入侵压力较大的地区，不仅物种对群落的贡献比例会随着时间的推移而发生变化，而且性状也会逐渐发生变化，从而改变一个地区的原始生态。为了更好地了解与生物入侵相关的累积性、群落级和生态系统尺度变化，有计划地进行长期研究并纳入一系列环境驱动因素和生态系统响应措施至关重要。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Diversity and Distributions 环境科学-生态学

CiteScore

8.90

自引率

4.30%

发文量

195

审稿时长

8-16 weeks

期刊介绍： Diversity and Distributions is a journal of conservation biogeography. We publish papers that deal with the application of biogeographical principles, theories, and analyses (being those concerned with the distributional dynamics of taxa and assemblages) to problems concerning the conservation of biodiversity. We no longer consider papers the sole aim of which is to describe or analyze patterns of biodiversity or to elucidate processes that generate biodiversity.