灰面的动态家园范围Craseomys rufocanus:一个试点研究
1Tromsø Museum, UiT The Arctic University of Norway, P. O. Box 6050, Langnes, Tromsø, 9037, Norway. karl.frafjord@uit.no.
BMC zoology
|July 15, 2024
概括
灰面 (Craseomys rufocanus) 的家庭范围大小因繁殖和季节而有很大变化. 在交配期间,雄性范围扩大,而雌性根据食物,住所和幼儿进行调整.
科学领域:
- 生态生态学 生态生态学
- 哺乳动物学 哺乳动物学
- 动物学 动物学
背景情况:
- 了解小型哺乳动物的息地范围对于人口动态和景观利用至关重要.
- 对于许多飞物种,包括Craseomys rufocanus,家庭范围的数据很少.
研究的目的:
- 为了研究家庭范围的大小和使用灰色侧翼 (Craseomys rufocanus) 的模式.
- 探索影响该物种家庭范围动态的因素.
主要方法:
- 在挪威北部2021-2023年夏季对6个成年Craseomys rufocanus (3只雄性,3只雌性) 的无线电追踪.
- 使用100%最小凸多边形 (MCP) 方法分析家庭范围的大小.
- 观察动态范围的变化和与生殖状态和季节的相关性.
主要成果:
- 观察到家庭范围大小的显著差异:男性 (2,29436,887平方米) 和女性 (1,7287,392平方米).
- 家庭范围的大小和使用与繁殖密切相关;雄性在寻找雌性时表现出更大的范围.
- 雌性范围受到资源和年轻人的限制,在繁殖后扩大.
结论:
- 在Craseomys rufocanus的家庭范围使用比以前报告的更为动态.
- 男性的范围大小主要是由寻找伴侣驱动的,接近雌性在繁殖季节之外的范围.
- 雌性范围的限制与筑巢和资源的可用性有关,与繁殖后的移动性增加有关.
相关概念视频
Conservation 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
Habitat 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
Migration
7.9K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
7.9K
Distribution and Dispersion
21.7K
To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement is known as the species distribution or dispersion. Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a...
21.7K
Areas Within Irregular Boundaries
74
Calculating areas within irregular boundaries, such as along rivers or curved roads, is crucial in various fields, including surveying, engineering, and environmental management. Surveyors often begin by creating a traverse, a connected series of straight lines approximating the area's boundary. The coordinates of each traverse point are essential for calculating the enclosed area. The double meridian distance formula is a widely used technique for this purpose. This method utilizes the...
74


