加利福尼亚海流中底栖鱼幼鱼群落的组成和功能多样性

IF 3.4 2区 环境科学与生态学 Q2 ECOLOGY
Ryan Gasbarro, Jarrod A. Santora, Megan Cimino, Adena Schonfeld, Steven J. Bograd, Elliott L. Hazen, Brian K. Wells, John C. Field
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引用次数: 0

摘要

目的生物地理尺度上的长期监测数据对于建立生物多样性格局的基线和诊断自然周期、趋势和异常事件以评估气候变化威胁的工具至关重要。然而,使用这些数据的研究往往将他们的分析限制在相对较少的指标上,这些指标可能无法充分捕捉生物多样性的广度。在此,我们计算了一套组成和功能生物多样性指标(包括生态景观),以更好地解决组合水平对环境变异性的响应,并测试动物生物地理省的时空稳定性。加州当前大型海洋生态系统(CCLME)的位置。分类群年幼底栖鱼组合(n = 45个分类群)。方法对两次长期渔业独立调查的物种组成和丰度数据与中上层分类群功能性状数据库进行比对。通过聚类分析确定了不同的组合。然后计算组成和功能α和β水平的生物多样性指标,以表征组合水平的生物多样性,并确定区域群落组成和更替的空间和时间模式。结果生态景观揭示了1990 - 2023年底栖鱼幼鱼的群落结构、功能多样性和周转情况。典型CCLME生物地理省区在组成和功能多样性指标上存在显著的时空差异和差异。高产(非高产)年份与以高(低)生物多样性和丰度为特征的组合的广泛程度有关。群落功能多样性模式与组成多样性模式的差异凸显了生态景观在更好地解析生物地理格局方面的潜力,在未来的研究中具有广阔的应用前景。生态景观可以提供生物多样性与生态系统功能和服务之间的明确联系,并进一步了解群落对环境变异性的响应和恢复能力,有助于在气候变化中监测生物多样性并迅速传播管理相关信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Composition and Functional Diversity of Juvenile Groundfish Assemblages in the California Current

Composition and Functional Diversity of Juvenile Groundfish Assemblages in the California Current

Aim

Long-term monitoring data at the biogeographic scale are essential for developing baselines of biodiversity patterns and tools to diagnose natural cycles, trends, and anomalous events to assess threats from climate change. However, studies using these data often limit their analyses to relatively few metrics that may not adequately capture the breadth of biodiversity. Here, we calculate a suite of compositional and functional biodiversity metrics—collectively comprising ecoscapes—to better resolve assemblage-level responses to environmental variability and test the spatiotemporal lability of faunal biogeographic provinces.

Location

California Current Large Marine Ecosystem (CCLME).

Taxon

Young-of-the-year juvenile groundfish assemblages (n = 45 taxa).

Methods

Species composition and abundance data from two long-term fisheries-independent surveys were collated with a functional trait database for pelagic taxa. Distinct assemblages were identified through cluster analysis. Compositional and functional alpha- and beta-level biodiversity metrics were then calculated to characterise assemblage-level biodiversity and to identify patterns of regional community composition and turnover in space and time.

Results

Ecoscapes revealed the assemblage structure, functional diversity, and turnover of juvenile groundfish from 1990 to 2023. Canonical CCLME biogeographic provinces were mostly supported, but with notable spatiotemporal variation and differences across compositional and functional diversity metrics. Highly productive (unproductive) years were associated with the widespread extent of assemblages characterised by high (low) biodiversity and abundance.

Main Conclusions

The differences between patterns of functional and compositional diversity of assemblages highlight the potential of ecoscapes to better resolve biogeographic patterns with promising applications for future studies. Ecoscapes may provide explicit links between biodiversity and ecosystem functioning and services, and additional insights into assemblage responses and resilience to environmental variability that can aid biodiversity monitoring and rapidly disseminate management-relevant information in a changing climate.

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来源期刊
Journal of Biogeography
Journal of Biogeography 环境科学-生态学
CiteScore
7.70
自引率
5.10%
发文量
203
审稿时长
2.2 months
期刊介绍: Papers dealing with all aspects of spatial, ecological and historical biogeography are considered for publication in Journal of Biogeography. The mission of the journal is to contribute to the growth and societal relevance of the discipline of biogeography through its role in the dissemination of biogeographical research.
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