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能源景观确定了地中海的海洋巨型动物养热点

Charlotte Lambert^1,2, Annette C Broderick³, Damla Beton^4,5

¹Littoral ENvironnement et Société UMR 7266, CNRS-La Rochelle Université, La Rochelle 17000, France.

Proceedings of the National Academy of Sciences of the United States of America

|February 3, 2025

概括

海洋巨型动物,包括鱼和大鱼,在地中海每年夏天消耗160万的猎物. 了解它们的食模式对于保护这些重要的海洋巨人和海洋生态系统至关重要.

科学领域:

海洋生态海洋生态学
保护生物学保护生物学
生态系统动力学生态系统动力学

背景情况:

海洋巨人对海洋食物网结构和生态系统弹性产生重大影响.
海洋巨型动物面临着人类活动和气候变化的严重威胁,增加了灭绝风险.
了解大型动物资源需求对于有效的保护和管理至关重要.

研究的目的:

在夏季使用能源景观方法调查地中海海洋巨型动物的猎物消费模式.
量化地中海不同海洋巨型动物物种的能量和猎物需求.
确定关键息地和关键物种,以保护海洋巨型动物.

主要方法:

综合丰富人口普查,饮食分析和能源需求估计.
应用了能源景观方法来绘制猎物消费模式.
专注于地中海的各种鱼类,哺乳动物,爬行动物和鸟类.

主要成果:

据估计,大约有410万个海洋巨型动物在地中海夏季每年消耗160万的猎物.
类头足动物被确定为地中海海洋巨型动物的主要猎物资源.
鱼和金枪鱼被确定为关键物种,有很大的猎物消费,地中海西部被强调为关键.

结论:

海洋巨型动物在地中海生态系统的运作中发挥着重要作用,因为它们大量食用猎物.
保护战略必须优先考虑空间和生物多样性,重点关注地中海西部.
保护海洋巨型动物对于保持整个地中海生态系统的弹性至关重要.

关键词:

蒙特卡罗模拟的蒙特卡罗模拟能源景观能源景观功能生态学功能生态学巨大的动物群.猎物消费是捕食者的消费.

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Primary Production

Primary Production

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Trophic Efficiency

Trophic Efficiency

Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.

What is an Ecosystem?

What is an Ecosystem?

Optimal Foraging

Optimal Foraging

How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.

Production Efficiency

Production Efficiency

Net production efficiency (NPE) is the efficiency at which organisms assimilate energy into biomass for the next trophic level. Due to low metabolic rates and less energy spent on thermoregulatory processes, the NPE of ectotherms (cold-blooded animals) is 10 times higher than endotherms (warm-blooded animals).

Keystone Species

Keystone Species

Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...