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较小和更大胆的鱼类在海草床中的人工珊瑚礁周围增强了生态系统规模的初级生产

Katrina S Munsterman¹, Maximilian H K Hesselbarth^1,2, Jacob E Allgeier¹

¹Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, Michigan, USA.

Ecological applications : a publication of the Ecological Society of America

|November 22, 2024

概括

小鱼和增加的食行为显著提高了海草的生产,特别是地下. 这凸显了渔业对鱼类大小和行为的影响如何改变渔业管理的生态系统营养动态.

科学领域:

生态生态学生态生态学
海洋生物学海洋生物学
渔业科学渔业科学

背景情况:

捕食和收获等自上而下的过程通过改变消费者的体型和行为来影响野生动物种群.
身体大小和食行为的变化影响营养分泌和分布,影响生态系统规模的营养动态.
这些改变的营养动态对生态系统过程的后果仍然不太清楚.

研究的目的:

为了研究鱼体大小如何与食行为相互作用,以影响营养有限的亚热带海草床中的海草生产.
通过地下初级生产 (BGPP) 和地面初级生产 (AGPP) 途径量化生态系统规模的生产.
了解这些相互作用对基于生态系统的管理和渔业的影响.

主要方法:

利用基于个人的模型模拟在亚热带海草生态系统中的人工珊瑚礁 (ARs) 和珊瑚鱼.
在个体和种群层面上模拟鱼群,考虑体型和食行为的变化.
量化了总初级产量 (TLPP = BGPP + AGPP),并分析了由鱼类行为影响的产量分布.

主要成果:

小鱼种群的总初级产量 (TLPP) 比大鱼种群的总初级产量更大.
增加的食活动导致TLPP高于在ARs.上避难的鱼类.
小型,积极食的鱼类导致了TLPP的最大增长,主要是通过增强的BGPP,强调了地下动态的重要性.

结论:

消费者体型和行为变化与初级生产直接相关,初级生产支持渔业的次级生产.
人为引起的变化,如捕鱼,改变鱼体大小和行为,从根本上改变了生态系统的生产动态.
了解捕捞对消费者群体的生态系统影响对于有效的基于生态系统的管理和渔业人工珊瑚礁的开发至关重要.

关键词:

人造珊瑚礁是一种人造珊瑚礁.行为行为行为行为行为.身体的尺寸身体的大小消费者介导的营养是消费者介导的营养.个体变化的个体变化.基于个人的模型.在生产生产生产生产生产生产.

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