Genetic Erosion

The gradual or rapid loss of genetic diversity within a species, including loss of populations, genes, or gene combinations, is called genetic erosion.

The gradual or sudden loss of genetic diversity within a plant or animal species, leading to the diminishment or complete loss of its unique gene pool (specific alleles or gene combinations).

• Pace of Erosion: It can occur rapidly due to catastrophic events and severe land-use changes, or it can progress gradually and go unnoticed for long periods.

• Primary Causes: While a minor loss of genetic diversity occurs naturally, alarming levels of genetic erosion are driven primarily by human activities, such as natural habitat destruction and the imposition of movement restrictions on wild populations.

• Importance of Diversity: A rich genetic diversity is absolutely crucial for a species' overall fitness, its long-term viability, and its ability to successfully adapt to changing environmental conditions.

Ecological Consequences:

• It severely weakens the genetic health of an entire species, pushing it toward eventual extinction.
• The disappearance of a species triggers a domino effect, adversely impacting other dependent species and ultimately degrading the overall health and stability of the environment.