Habitat fragmentation can negatively affect populations by...

Name: Problem 4, Chapter 59: Biology
Uploaded: 2021-02-12T20:56:54-08:00
Duration: 2 min 53 s
Channel: Dana Tsai
Description: Habitat fragmentation can negatively affect populations by a. restricting gene flow among areas that were previously continuous. b. increasing the relative amount of edge in suitable habitat patches. c. creating patches that are too small to support a breeding population. d. All of the choices are correct.

Habitat fragmentation can negatively affect populations by a. restricting gene flow among areas that were previously continuous. b. increasing the relative amount of edge in suitable habitat patches. c. creating patches that are too small to support a breeding population. d. All of the choices are correct.

Habitat fragmentation can negatively affect populations by
a. restricting gene flow among areas that were previously continuous.
b. increasing the relative amount of edge in suitable habitat patches.
c. creating patches that are too small to support
a breeding population.
d. All of the choices are correct.

Key Concepts

Population Viability in Small Patches

Population viability in small patches emphasizes the importance of patch size in supporting sustainable populations. When habitat patches become too small, they may not provide sufficient resources or space for breeding populations to thrive, leading to risks of inbreeding, demographic instability, and eventual local extinction.

Edge Effects

Edge effects describe the changes in population or community structures that occur at the boundary of habitat patches compared to the interior. Increased edges can lead to altered microclimates and higher exposure to predators or invasive species, which can negatively impact species that require stable, interior conditions.

Gene Flow

Gene flow is the movement of genetic material between populations through mechanisms such as animal migration or seed dispersal. In fragmented habitats, barriers can impede gene flow, causing genetic isolation, decreased genetic diversity, and increased vulnerability to diseases and environmental changes.

Habitat Fragmentation

Habitat fragmentation refers to the process by which large, continuous habitats are divided into smaller, isolated patches. This division can result from natural processes or human activities, and it often leads to isolated populations that are more vulnerable to environmental changes and local extinctions.

Transcript

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