相关实验视频

Updated: May 25, 2025

Physiological Characterization of the Coral Holobiont Using a New Micro-Respirometry Tool

Physiological Characterization of the Coral Holobiont Using a New Micro-Respirometry Tool

Published on: April 28, 2023

河口居民鱼类的时间趋势:功能特征和对环境和气候变化的反应

Nuno Mussá M U Escamade¹, Valeria Marques Lemos¹, Alexandre Miranda Garcia¹

¹Laboratory of Ichthyology, Institute of Oceanography, Federal University of Rio Grande (FURG), Av. Itália s/n - km 8 - Carreiros, Rio Grande, Brazil.

Marine environmental research

|February 26, 2025

概括

像厄尔尼诺这样的极端气候事件正在使亚热带河口的鱼群减少. 长期数据显示Atherinella brasiliensis,Jenynsia lineata和Ctenogobius shufeldti的数量有所下降,影响了生态系统的健康.

科学领域:

生态生态学生态生态学
气候科学气候科学
鱼类学鱼类学鱼类学

背景情况:

极端气候现象,如厄尔尼诺现象,其强度和频率正在增加.
这些事件驱动河口的水力动力学变化,影响结构和生物多样性.
河口是面临人类和气候压力的重要生态系统.

研究的目的:

分析三个河口居民鱼类物种的长期丰度趋势.
研究物种丰度与当地,区域和气候因素 (包括厄尔尼诺现象) 之间的关系.
评估具有不同功能特征的物种是否对厄尔尼诺事件有类似的反应.

主要方法:

利用了22年的标准化调查数据来检测Atherinella brasiliensis,Jenynsia lineata,以及Ctenogobius shufeldti. 这两种植物的种类.
采用了通用线性模型来分析物种丰度趋势和环境因素关系.
对比了厄尔尼诺现象对具有不同功能特征的物种 (卵性与活性) 的影响.

主要成果:

在22年内,观察到所有三个研究的河口居民物种的数量持续下降.
物种数量的减少与当地,区域和气候变化有关,包括厄尔尼诺现象.
厄尔尼诺现象产生了不同的影响,影响卵性物种 (A. brasiliensis,C. shufeldti) 超过活性物种 (J. lineata).

结论:

河口居民鱼种群的数量呈现了十年的下降,无论其功能特征如何.
厄尔尼诺现象根据繁殖策略对鱼类物种产生不同影响.
这些发现凸显了人们对在亚热带河口保护生态功能和服务的担忧,这些河口面临着气候变化和人类压力.

关键词:

丰富的丰富的丰富的 B-LTER 这是一封信.气候影响气候影响厄尔尼诺现象 (El Niño) 是一个一般化的线性模型.帕托斯湖河口的河口

更多相关视频

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

Resurrection of Dormant Daphnia magna: Protocol and Applications

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

相关概念视频

Osmoregulation in Fishes

Osmoregulation in Fishes

When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?

Global Climate Change

Global Climate Change

Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.

Speciation Rates

Speciation Rates