Question

Give examples of human actions that could expand a species' distribution by changing its (a) dispersal or (b) biotic interactions.

Short answer

(a) Despite geographic obstacles such as mountains, seas, and deserts, many species have dispersed through inadvertent or planned vectors, such as ships.

(b) When certain species are removed from a community, the biotic interactions between its members are altered, disruptive and have serious consequences.

Step-by-step solution

Species distribuition

A biodiversity subject is a study of the spatial distribution of biological species as aggregated by a grid, a region, or any other administrative or analytical unit. The way individuals in a population are spread out in space at any particular time is referred to as dispersion or distribution patterns.

Explanation for ‘a’

The global distribution of organisms is affected by dispersal or migration away from origins or densely populated areas, which is one factor.To understand the role of geographical isolation in evolution andspecies distribution patterns, we must understand organism dispersion.

Humans significantly impact dispersion, both directly and indirectly, by modifying landscapes and natural vectors.

Explanation for ‘b’

Biological interactions occur when creatures in the same community affect each other directly or indirectly.They are critical in the development of modern communities. A species' capacity to live and reproduce is diminished by interactions with other species, such as predators and herbivores.

Human actions affect other creatures in a negative way. Humans fight for resources with certain species, prey on others, and alter their environment.