美国伊利诺伊州的白尾鹿 (Odocoileus virginianus) 息地质量建模的更新框架
Jameson Mori1, William Brown1, Daniel Skinner2
1Illinois Natural History Survey University of Illinois Urbana-Champaign Champaign Illinois USA.
Ecology and evolution
|November 4, 2024
概括
伊利诺伊州开发了一个新的鹿土地覆盖效用 (LCU) 评分,改进了以前的息地适应性模型. 这个分数准确地预测了跨多个空间尺度的白尾鹿密度.
科学领域:
- 野生动物生态生态学
- 息地的评估评估
- 地理空间分析的研究.
背景情况:
- 白尾鹿 (Odocoileus virginianus) 的管理需要了解环境关系.
- 之前的息地适宜性指数使用过时的卫星数据,缺乏精细尺度的分辨率.
- 在较小的空间尺度上评估鹿息地的适宜性时存在差距.
研究的目的:
- 为伊利诺伊州制定更新的鹿土地覆盖公用事业 (LCU) 评分.
- 用当代土地覆盖数据和鹿种群数据验证LCU得分.
- 为改善白尾鹿管理和相关生态研究提供一个工具.
主要方法:
- 使用国家土地覆盖数据库 (2001-2021) 开发了TRS,乡镇和县级的鹿LCU得分.
- 通过贝叶斯回归验证了LCU得分与最低鹿种群数据相比.
- 在回归模型中包含与狩猎和鹿密度相关的协变量.
主要成果:
- 贝叶斯回归模型表现出强的性能,R2值为0.501 (TRS),0.5 (乡镇) 和0.969 (县).
- 鹿的LCU得分在统计学上是显著的,并且在所有尺度上与最低鹿密度正相关.
- 模型预测显示了准确性,真实和预测的鹿密度之间的中位数绝对差异较低.
结论:
- 开发的鹿LCU得分有效地预测了伊利诺伊州在多个空间尺度上的白尾鹿密度.
- 这种LCU为鹿管理,疾病生态学和分布研究提供了宝贵的工具.
- 该建模方法可适应其他物种,地点和时间段,并提供土地覆盖数据.
相关概念视频
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
40
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
40
02:31Habitat Fragmentation
17.4K
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.
17.4K
01:29Levels of Use of a GIS
45
Geographic Information Systems (GIS) operate across three levels of application, each representing an increasing degree of complexity: data management, analysis, and prediction. These levels reflect the expanding functionality and versatility of GIS technology in handling spatial data for diverse purposes.Data ManagementAt its foundational level, GIS serves as a tool for data management, enabling the input, storage, retrieval, and organization of spatial data. This level is often employed in...
45
01:50Threats to Biodiversity
22.1K
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...
22.1K
02:07Conservation of Declining Populations
9.6K
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
9.6K
01:29Topographic Surveying and Contours
51
Topographic surveying is critical for documenting the Earth's surface, focusing on capturing elevations, slopes, and natural and man-made features. It is essential in construction planning, water resource management, and land-use analysis. The primary outcome of such surveys is a topographic map, which uses contour lines to visually represent the shape and slope of the terrain, providing valuable insights into the landscape's characteristics.Contour lines are fundamental to understanding the...
51