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Global Systematic Review of Methodological Approaches to Analyze Coastal Shelf Food Webs
Frontiers in Marine Science ( IF 3.7 ) Pub Date : 2020-08-31 , DOI: 10.3389/fmars.2020.00636
Eleni Kytinou , Maria Sini , Yiannis Issaris , Stelios Katsanevakis

The study of marine coastal food webs has a central role in the application of the integrated ecosystem approach for marine management. Changes in food webs caused by natural or anthropic drivers can lead to dramatic shifts in the overall structure and function of coastal marine ecosystems and deterioration of their services. The present review investigates the methodological approaches employed for the assessment of coastal shelf food webs at a global scale and highlights existing gaps and limitations. Out of 1652 published articles that initially met our search criteria, 880 passed the initial screening and 493 were found relevant and were fully analyzed. The information extracted included the spatiotemporal coverage of the studies; the main methodological approaches utilized for the assessment of population state variables (i.e., biomass, size, abundance) and trophic levels; the biotic components and driving factors considered; indices used to describe the structure and functioning of coastal food webs; and main knowledge gaps. Results showed that most studies have been conducted at a subnational level, mostly in the Temperate Northern Atlantic marine realm. Overall, 54% of the studies provided quantitative information on food web structure. The most common methodological approach utilized was modeling (40%), followed by non-experimental-based correlations (30%), and natural or manipulative experiments (14%). Information on population state variables was provided by 69% of the studies, while 42% employed some of the following trophic level determination techniques: stable isotopes, gut contents, fatty acids, and molecular analysis, which were either combined or used in isolation. Specific natural or human drivers were incorporated in 76% of the studies, with fishing being the most common driver. Modeling approaches included multiple indices to describe food web attributes and/or the structure and functioning of coastal shelf ecosystems. Despite the great progress achieved through the development of new tools and techniques, food web analysis still suffers from important knowledge gaps and limitations of the methodological approaches, which are extensively discussed. The present review establishes a useful knowledge base to provide guidance for future research and assessments on coastal shelf food webs, and to support ecosystem-based management.

中文翻译:

分析沿海陆架食物网的方法论的全球系统回顾

海洋沿海食物网的研究在应用综合生态系统方法进行海洋管理方面发挥着核心作用。由自然或人为驱动因素引起的食物网变化可能导致沿海海洋生态系统整体结构和功能的巨大变化及其服务的恶化。本综述调查了在全球范围内用于评估沿海货架食物网的方法,并强调了现有的差距和局限性。在最初符合我们搜索条件的 1652 篇已发表文章中,880 篇通过了初步筛选,493 篇被发现相关并进行了全面分析。提取的信息包括研究的时空覆盖范围;用于评估种群状态变量(即生物量、大小、丰度)和营养水平;考虑的生物成分和驱动因素;用于描述沿海食物网结构和功能的指数;和主要的知识差距。结果表明,大多数研究是在国家以下一级进行的,主要是在温带北大西洋海洋领域。总体而言,54% 的研究提供了有关食物网结构的定量信息。最常用的方法是建模 (40%),其次是基于非实验的相关性 (30%) 和自然或操纵实验 (14%)。69% 的研究提供了关于种群状态变量的信息,而 42% 的研究采用了以下一些营养水平测定技术:稳定同位素、肠道内容物、脂肪酸和分子分析,这些技术要么组合使用,要么单独使用。76% 的研究纳入了特定的自然或人类驱动因素,其中捕鱼是最常见的驱动因素。建模方法包括多个指数来描述食物网属性和/或沿海陆架生态系统的结构和功能。尽管通过开发新工具和技术取得了巨大进步,但食物网分析仍然存在重要的知识差距和方法学方法的局限性,这些问题被广泛讨论。本综述建立了一个有用的知识库,为未来沿海陆架食物网的研究和评估提供指导,并支持基于生态系统的管理。建模方法包括多个指数来描述食物网属性和/或沿海陆架生态系统的结构和功能。尽管通过开发新工具和技术取得了巨大进步,但食物网分析仍然存在重要的知识差距和方法学方法的局限性,这些问题被广泛讨论。本综述建立了一个有用的知识库,为未来沿海陆架食物网的研究和评估提供指导,并支持基于生态系统的管理。建模方法包括多个指数来描述食物网属性和/或沿海陆架生态系统的结构和功能。尽管通过开发新工具和技术取得了巨大进步,但食物网分析仍然存在重要的知识差距和方法学方法的局限性,这些问题被广泛讨论。本综述建立了一个有用的知识库,为未来沿海陆架食物网的研究和评估提供指导,并支持基于生态系统的管理。被广泛讨论。本综述建立了一个有用的知识库,为未来沿海陆架食物网的研究和评估提供指导,并支持基于生态系统的管理。被广泛讨论。本综述建立了一个有用的知识库,为未来沿海陆架食物网的研究和评估提供指导,并支持基于生态系统的管理。
更新日期:2020-08-31
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