Which event might cause the carrying capacity of a population to change?

Carrying capacity can be described as the maximum number of population of a species that a particular habitat can hold.

There are a number of events which effect the carrying capacity like:

Environmental changes like weather conditions might become favorable for a species in a habitat. It might be that a certain weather condition raises more food for a species. Hence, the carrying capacity would increase.

It might be conditions like drought make the availability of nutrients scarce for a population of species. In this case, the carrying capacity of the ecosystem would decrease.

It might happen that other species might come to live in the particular area. That species will deplete the availability of resources and cause the carrying capacity to decrease.

If adequate amount of rain fall occurs in an area, it might cause the carrying capacity of a species to increase as there will be more water. But if the water supply becomes scarce, the carrying capacity would decrease.

1. glaciers are melting

2. more water going into ocean (water's such as fresh waters, etc)