Fully one-third of all amphibian species are threatened with extinction, and more than 40% have undergone significant population declines over the past decade (Fig. 49.24). What accounts for this pattern? FIG. 49.24 Amphibians under threat. The Harlequin Toad(Atelopus varius), from Costa Rica and Panama, hasbeen dassified as critically endangered. Source: MorteRead/Science Source.

The last 50 years have accounted for the loss of more than 50 species of amphibians. Out of these 90…

Answered: FIG. 49.24 Amphibians under threat. The…

FIG. 49.24 Amphibians under threat. The Harlequin Toad (Atelopus varius), from Costa Rica and Panama, has been dassified as critically endangered. Source: Morte Read/Science Source.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter47: Conservation Biology And Biodiversity

Section: Chapter Questions

Problem 4VCQ: Figure 47.16 Which of the following statements is not supported by this graph? There are more...

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Concept explainers

Conservation Biology

The study of how to prevent the loss of biological diversity on the planet is called conservation. Biological diversity, also termed biodiversity, consists of various life forms found in a specific location or across the entire planet, including ecosystems, species, populations, and genes. Conservation thus aims to protect the diversity of life at all levels of biological organization.

Question

Fully one-third of all amphibian species are threatened with extinction, and more than 40% have undergone significant population declines over the past decade (Fig. 49.24). What accounts for this pattern?

FIG. 49.24 Amphibians under threat. The Harlequin Toad
(Atelopus varius), from Costa Rica and Panama, has
been dassified as critically endangered. Source: Morte
Read/Science Source.

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