Question

Increase in productivity most likely causes the loss of species because:
(A) those species that increase in productivity outcome other species
(B) the cause of increased productivity in one species does not necessarily have the same effect on all species.
(C) there are inadequate resources available for productivity increases in all species
(D) all of the above

Answer 1

Hint: Amount of organic material produced per unit area per unit time is known as productivity. An increase in productivity can mean that one specie outcompetes another this signifies that resources are not equally divided.
Step-by-step solution: Resources are limited, an increase in resources that benefits one species can often cause other specie to suffer. An increase in resources may mean that one specie outcompetes another which means resources are not equally available to all the species.
Based on the productivity responses of individual species to environmental changes, we design a comprehensive stochastic dynamic model to evaluate the implications of species richness on the anticipated temporal mean and variance of ecosystem processes such as production.
Two key insurance effects of species richness on ecosystem productivity are shown by our model:

• 1. A performance-improving effect is a buffering impact.

2. A reduction in the temporal variation of productivity. If productivity increases this can mean that it is beneficial for one particular specie and the other group of specie may be reduced.

The correct answer for this question is option (D).
Note: Based on the productivity responses of individual species to environmental changes, we create a stochastic dynamic model to evaluate the effects of species richness within a trophic level or functional group on the anticipated temporal mean and variance of ecosystem production.