Structural Dynamics and Robustness of Southern North Sea Bentho-Demersal Food Webs

北海南部底栖食物网的结构动力学和稳健性

• 批准号: 366825606
• 负责人: Dr. Maryam Weigt
• 金额: --
• 依托单位: Sektion Funktionelle Ökologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/366825606?language=en
• 关键词: Structural; Dynamics; Robustness; Southern; North

Developing a new and general approach towards a quantitative determination of the impact of environmental disturbances on the southern North Sea ecosystem is essential for better understanding of ecosystem goods and services. The proposed project aims to reveal the effects of variability in external disturbances (e.g. sea temperature rise) on major functions and services coupled to the trophic network of the bentho-demersal compartment. The food web, as the sum of all trophic relationships, constitutes the major matrix of interactions essential for the functioning of the system. This study will evaluate the robustness of the benthos-demersal food webs of the southern North Sea, using as case studies the dominant species associations present in the German Exclusive Economic Zone (EEZ). Food web structures will be analyzed by means of stable isotope signatures and classical diet identification. The central task is a comprehensive trophic analysis that combines multiple food chains of the benthos and demersal fish. The emphasis is to extract the core trophic interactions that contribute most to the trophic network stability. The expected results will identify how the significance of species and functional traits for maintaining food web integrity correlate with sensitivity to environmental change.

开发一种新的通用方法来定量确定环境干扰对北海南部生态系统的影响对于更好地了解生态系统产品和服务至关重要。拟议项目旨在揭示外部干扰（例如海水温度上升）的变化对与底栖区营养网络相关的主要功能和服务的影响。食物网作为所有营养关系的总和，构成了系统功能所必需的相互作用的主要矩阵。本研究将以德国专属经济区 (EEZ) 中的优势物种协会为案例研究，评估北海南部底栖生物-底层食物网的稳健性。将通过稳定同位素特征和经典饮食识别来分析食物网结构。中心任务是综合营养分析，结合底栖鱼类和底层鱼类的多个食物链。重点是提取对营养网络稳定性贡献最大的核心营养相互作用。预期结果将确定物种和功能特征对于维持食物网完整性的重要性如何与对环境变化的敏感性相关联。