Week 8 Lab report

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Species Extinction and Nature Reserves

Abstract

To address the problem of species extinction , nature reserves were created to manage and preserve threatened species such as the grizzly bear . However , setting up a reserve requires special attention to statistical data and mathematical probabilities to help ensure species survival . Vital aspects include the minimum viable population , effects of immigration , home range size , critical reserve size , and the relationship of these vital statistics

Introduction

Worldwide , frog and toad species populations are declining

. Adults are incapable of reproducing while not all eggs are hatching . What is the significance of this phenomenon ? Frogs and toads are the environmental equivalents of a miner 's canary ' The current plight of the amphibian population reflects the current environmental situation of mass extinction . Frog populations act as canaries ' in a way that frogs are highly adaptable and have survived numerous mass extinctions in the past 300 years (Harding . Their sudden decline now implies an ecological problem that poses survival risks not only for the frog-kind but all animal life - humans included . Assuming that the environmental situation can be stabilized , the next step towards ensuring species survival is to establish nature reserves , which is the focus of the activity

Materials and Methods

There are no necessary materials for the current laboratory activity aside from the module available on the Essential Biology website chapters 14 to 20 . The exercise requires the analysis and correlation of several presented graphical information with known information from conservation...