在墨西哥的黑熊 (Ursus americanus) 的道路杀伤风险模型
Zuleyma Zarco-González1, Octavio Monroy-Vilchis2
1Tecnológico Nacional de México/Instituto Tecnológico de Toluca, C.P. 52149, Metepec, México.
Environmental monitoring and assessment
|December 26, 2023
概括
在墨西哥,公路上的屠杀对黑熊构成越来越大的威胁. 这项研究使用MaxEnt模型确定了高风险路段,这对于有针对性的保护和驾驶员安全至关重要.
科学领域:
- 野生动物保护 野生动物保护
- 道路生态学 道路生态学
- 空间分析 空间分析
背景情况:
- 道路杀伤对野生动物种群构成重大威胁,包括墨西哥的黑熊 (Ursus americanus).
- 经济和资源的局限性阻碍了全面的道路杀戮监测和缓解努力.
- 越来越多的黑熊在人居住区附近存在,以及道路事故需要集中研究.
研究的目的:
- 通过使用预测建模,识别高黑熊路杀风险的道路段的特征.
- 绘制这些高风险地区的地图,特别是在受保护的自然区域内.
- 为黑熊提供有针对性的保护战略和道路安全措施提供信息.
主要方法:
- 一个单一的MaxEnt模型被用来预测黑熊道路杀伤风险.
- 数据包括83条道路杀伤记录 (2008-2022) 和16个环境,道路和人类变量.
- 模型性能使用曲线下面面积 (AUC) 和杰克刀分析进行了验证.
主要成果:
- 马克森特模型表现良好 (AUC = 0.96).
- 影响道路杀伤风险的关键因素包括距离水体,保护区,灌木,排水和速度限制的距离.
- 大约3883.25公里的道路被确定为高风险,其中373.10公里位于保护区内.
结论:
- 该研究为优先考虑特定道路段的保护工作提供了关键数据.
- 对于高风险地区,建议使用低成本的缓解策略,如减速和标志.
- 研究结果支持将道路对黑熊种群的影响降至最低,并提高驾驶员的安全.
相关概念视频
02:39Predator-Prey Interactions
16.2K
Predators consume prey for energy. Predators that acquire prey and prey that avoid predation both increase their chances of survival and reproduction (i.e., fitness). Routine predator-prey interactions elicit mutual adaptations that improve predator offenses, such as claws, teeth, and speed, as well as prey defenses, including crypsis, aposematism, and mimicry. Thus, predator-prey interactions resemble an evolutionary arms race.
16.2K
00:48Optimal Foraging
12.1K
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.
12.1K
01:50Threats to Biodiversity
22.3K
There have been five major extinction events throughout geological history, resulting in the elimination of biodiversity, followed by a rebound of species that adapted to the new conditions. In the current geological epoch, the Holocene, there is a sixth extinction event in progress. This mass extinction has been attributed to human activities and is thus provisionally called the Anthropocene. In 2019 the human population reached 7.7 billion people and is projected to comprise 10 billion by...
22.3K
02:04Conservation of Small Populations
13.1K
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...
13.1K
02:31Habitat Fragmentation
17.5K
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.
17.5K