相关实验视频

Updated: Jun 23, 2025

Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling SAHM

Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling SAHM

Published on: October 11, 2016

基于特征的物种脆弱性和影响模型中的空间和生命史变化

Aharon G Fleury¹, Casey C O'Hara^2,3, Nathalie Butt¹

¹Centre for Biodiversity and Conservation Science, The School of the Environment, The University of Queensland, St. Lucia, Queensland, Australia.

|June 21, 2024

概括

动态生态模型对于保护流动物种至关重要. 纳入生命阶段和空间变化揭示了独特的脆弱性和影响,使得绿海等物种的有针对性的保护成为可能.

科学领域:

生态生态学生态生态学
保护生物学保护生物学
环境科学环境科学

背景情况:

生物多样性保护依赖于生态模型,但目前的模型在移动或复杂生命周期物种的环境压力中存在时空变化.
静态模型经常汇总数据,掩盖特定生命阶段的漏洞和影响.

研究的目的:

开发和演示基于特征的脆弱性和影响模型,该模型包含动态物种的生命史变异和空间分布.
评估大加勒比地区绿海在不同生命阶段的脆弱性和人为影响如何变化.

主要方法:

开发了一种基于特征的脆弱性和影响模型,整合了生命史阶段和物种和压力因素的空间分布.
将模型应用于大加勒比地区的绿海,分析了四个不同的生命阶段.
使用聚合性特征数据与生命阶段特定数据对比的脆弱性评估.

主要成果:

确定了特定生命阶段的脆弱性,这些脆弱性以前被聚合的特征值所掩盖.
早期生活阶段对污染和海洋热浪等压力因素的脆弱性更高,但对附带捕捞的脆弱性更低.
空间分析显示,影响因生命阶段和地理区域而异,凸显了阶段特定保护的必要性.

结论:

将动态过程,生命史变异和空间分布纳入生态模型对于有效的保护至关重要.
开发的模型可以为具有复杂生命史的高度移动物种提供更有针对性和明智的保护行动.
特定阶段的保护措施对于像绿海这样的物种至关重要,以解决它们整个生命周期的不同脆弱性和影响.

更多相关视频

Methodology for Developing Life Tables for Sessile Insects in the Field Using the Whitefly, Bemisia tabaci, in Cotton As a Model System

Methodology for Developing Life Tables for Sessile Insects in the Field Using the Whitefly, Bemisia tabaci, in Cotton As a Model System

Published on: November 1, 2017

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Predicting the Effectiveness of Population Replacement Strategy Using Mathematical Modeling

Published on: July 4, 2007

相关概念视频

Life Histories

Life Histories

Speciation Rates

Speciation Rates

Habitat Fragmentation

Habitat Fragmentation

Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.

Mutation, Gene Flow, and Genetic Drift

Mutation, Gene Flow, and Genetic Drift

In a population that is not at Hardy-Weinberg equilibrium, the frequency of alleles changes over time. Therefore, any deviations from the five conditions of Hardy-Weinberg equilibrium can alter the genetic variation of a given population. Conditions that change the genetic variability of a population include mutations, natural selection, non-random mating, gene flow, and genetic drift (small population size).

Genetics of Speciation

Genetics of Speciation

Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.

Conservation of Small Populations

Conservation of Small Populations

Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...