全球生物多样性趋势的混乱根源

IF 3.1 2区 环境科学与生态学 Q2 ECOLOGY Oikos Pub Date : 2024-04-12 DOI:10.1111/oik.10732
Maëlys Boënnec, Vasilis Dakos, Vincent Devictor
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引用次数: 0

摘要

世界范围内的种群和生态群落正在发生变化,经验研究显示出两种趋势交织在一起,一种是下降趋势,另一种是混合趋势。因此,全球生物多样性趋势仍然混乱,而评估这种变化具有重要的社会、政治和科学意义。这种变化的部分原因可能是难以可靠地评估全球生物多样性趋势。在此,我们对记录全球生物多样性时间动态的研究进行了文献综述。我们对综述论文所使用的方法、数据和方法论之间的差异进行了分类,以揭示共同的发现和差异的来源。我们发现,综述和荟萃分析以及使用全球指标更有可能得出趋势正在下降的结论。另一方面,数据可用的时间越长,它们得出的趋势就越细微。我们的研究结果还凸显了缺乏有关全球范围内协同压力影响的研究,这使得我们更加难以理解所观察到的变化的驱动因素以及如何决定相应的保护计划。最后,我们强调,为了实施有效的保护战略,必须考虑到所发现的混乱来源以及生物多样性变化的复杂性。特别是,生物多样性的动态几乎被系统地假定为线性的,而非线性趋势在很大程度上被忽视了。厘清全球生物多样性趋势的混乱来源应能加强大规模生物多样性监测和保护。
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Sources of confusion in global biodiversity trends
Populations and ecological communities are changing worldwide, and empirical studies exhibit a mixture of either declining or mixed trends. Confusion in global biodiversity trends thus remains, while assessing such changes is of major social, political, and scientific importance. Part of this variability may arise from the difficulty to reliably assess global biodiversity trends. Here, we conducted a literature review of studies documenting the temporal dynamics of global biodiversity. We classified the differences among approaches, data, and methodology used by the reviewed papers to reveal common findings and sources of discrepancies. We show that reviews and meta‐analyses, along with the use of global indicators, are more likely to conclude that trends are declining. On the other hand, the longer the data are available, the more nuanced are the trends they generate. Our results also highlight the lack of studies providing information on the impact of synergistic pressures on a global scale, making it even more difficult to understand the driving factors of the observed changes and how to decide conservation plan accordingly. Finally, we stress the importance of taking into account the sources of confusion identified, as well as the complexity of biodiversity changes, in order to implement effective conservation strategies. In particular, biodiversity dynamics are almost systematically assumed to be linear, while non‐linear trends are largely neglected. Clarifying the sources of confusion in global biodiversity trends should strengthen large‐scale biodiversity monitoring and conservation.
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来源期刊
Oikos
Oikos 环境科学-生态学
CiteScore
6.20
自引率
5.90%
发文量
152
审稿时长
6-12 weeks
期刊介绍: Oikos publishes original and innovative research on all aspects of ecology, defined as organism-environment interactions at various spatiotemporal scales, so including macroecology and evolutionary ecology. Emphasis is on theoretical and empirical work aimed at generalization and synthesis across taxa, systems and ecological disciplines. Papers can contribute to new developments in ecology by reporting novel theory or critical empirical results, and "synthesis" can include developing new theory, tests of general hypotheses, or bringing together established or emerging areas of ecology. Confirming or extending the established literature, by for example showing results that are novel for a new taxon, or purely applied research, is given low priority.
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