What are some positive effects of a slow change to an ecosystem?

An ecosystem is very likely to be changed due to various conditions such as a change in the temperature, rate of precipitation level, pressure in that area, the moisture content in the air, and the wind. These factors are responsible for the slow and rapid changes in the ecosystem.

The slow changes are sometimes helpful to the ecosystem. The increase in the amount of sunlight and rainfall provides nutrients to the soil, and helps in the growth of different plant species and maintains a favorable condition for the organisms to exist in an ecosystem.  

The slow rise in the temperature allows some of the species to adapt to that environmental condition and those that cannot adapt migrate to the regions of higher latitude for their survival.

Thus, the slow change in the ecosystem allows the organisms to adapt to that particular environment without losing their habitat and making it more suitable to live in it.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.