Question

Прошу.срочно. Какой абиотический фактор может привести к резкому сокращению численности популяции речного бобра? А)Обильные дожди летом В)Увеличение численности водных растений C)Пересыхание водоема D)Интенсивный отстрел животных и почему.

Answer 1

Пересыхание водоемов 

Answer 2

C)Пересыхание водоема

Answer 3

Abiotic Factors Affecting River Beaver Population

The population of river beavers can be influenced by various abiotic factors, which are non-living components of the environment. Let's examine the options provided and determine which abiotic factor could lead to a sharp decline in the population of river beavers.

A) Abundant summer rains: Abiotic factors such as rainfall can have both positive and negative effects on the population of river beavers. While rain can provide more water resources and potentially increase the availability of food and habitat, excessive rainfall can also lead to flooding and destruction of beaver dams, which are essential for their survival [[1]]. Therefore, abundant summer rains may not necessarily result in a significant reduction in the population of river beavers.

B) Increase in the number of aquatic plants: River beavers primarily feed on the bark, twigs, and leaves of trees and shrubs. An increase in the number of aquatic plants may not directly impact the beaver population unless it leads to a decrease in the availability of their preferred food sources. However, if the increase in aquatic plants is accompanied by a decline in the availability of suitable trees and shrubs, it could potentially affect the beaver population by limiting their food resources and habitat [[2]].

C) Drying up of water bodies: River beavers are well-adapted to aquatic environments and rely on water bodies for their survival. If the water bodies where beavers reside dry up, it can have a severe impact on their population. The loss of water can lead to a scarcity of food, reduced access to suitable habitat, and increased vulnerability to predators. Therefore, the drying up of water bodies can indeed result in a sharp decline in the population of river beavers [[3]].

D) Intensive hunting of animals: Human activities, such as intensive hunting or overexploitation, can significantly affect the population of river beavers. If beavers are subjected to intense hunting pressure, their population can decline rapidly. Overhunting can disrupt the balance of the ecosystem and lead to a decrease in the number of beavers. This is particularly true if hunting is not regulated and sustainable management practices are not in place [[4]].

In conclusion, out of the options provided, the abiotic factor that can most likely lead to a sharp reduction in the population of river beavers is C) the drying up of water bodies. When the water bodies where beavers live dry up, it can result in a scarcity of food, limited habitat, and increased vulnerability to predators, all of which can have a significant negative impact on the beaver population [[3]].

Note: The information provided is based on search results and general knowledge about river beavers.