Conserving Living Natural Resources: In the Context of a by Bertie Josephson Weddell

By Bertie Josephson Weddell

Retaining residing normal assets is an introductory textbook for college students of conservation biology and source administration. It provides the old and conceptual contexts of 3 seminal techniques to the administration of residing usual assets: utilitarian administration for harvest of featured species and keep watch over of undesirable species, safety and recovery of populations and habitats to keep up biodiversity, and administration of complicated ecosystems to maintain either productiveness and biodiversity. instead of endorsing a unmarried strategy because the purely right one, this e-book investigates the historic and philosophical contexts, conceptual frameworks, vital options, and the constraints of every strategy.

Show description

Read or Download Conserving Living Natural Resources: In the Context of a Changing World PDF

Similar environmental studies books

Nitrogen Cycling in the Americas: Natural and Anthropogenic Influences and Controls

Advances in our realizing of the nitrogen cycle and the impression of anthropogenic actions on nearby to worldwide scales depend upon the growth of clinical reviews to those fast-developing areas. This ebook offers a sequence of reports from around the Americas whose goal is to focus on key usual tactics that regulate nitrogen biking in addition to talk about the most anthropogenic impacts at the nitrogen cycle in either the tropical and temperate areas of the Americas.

Valuing Ecosystem Services: Toward Better Environmental Decision-Making

Nutrient recycling, habitat for vegetation and animals, flood keep watch over, and water provide are one of several valuable providers supplied via aquatic ecosystems. In making judgements approximately human actions, comparable to draining a wetland for a housing improvement, it's necessary to reflect on either the worth of the improvement and the worth of the environment prone which may be misplaced.

Persistent, Bioaccumulative, and Toxic PBT) Chemicals: Technical Aspects, Policies, and Practices

Built from the efforts of a multiyear, foreign venture studying how continual, bioaccumulative, and poisonous (PBT) chemical substances are evaluated and controlled, continual, Bioaccumulative, and poisonous (PBT) chemical substances: Technical elements, guidelines, and Practices makes a speciality of bettering the methods that govern PBTs.

Extra resources for Conserving Living Natural Resources: In the Context of a Changing World

Sample text

Is the author unusually biased? Does the author have a strong interest in advocating a particular measure or in defending a certain school of thought? Is the author associated with a group that is defending or attacking a particular position? If the evidence comes from historical documents, what was the perspective of the author? What interests and biases might have colored the information that was recorded? Where is this evidence presented? Is it in a professional journal? If not, is it in a publication that is trying to push a particular viewpoint or perhaps to sensationalize news?

Sea otters were killed for their pelts, and elephant seals for their oil (Carroll 1982). We shall see in Chapter 8 that the genetic consequences of that population reduction remain to this day. The process of intensive commercial exploitation followed by depletion is clearly illustrated by the fate of the northern fur seal. 2).

European colonization of many other parts of the world led to similar changes in land tenure. Communally owned resources were often converted to privately owned, marketable land (Browning 1971; Grove 1990; Gadgil and Guha 1992, 1995). Dramatic and widespread changes in levels of resource exploitation were associated with this change, and as a result many habitats were altered and populations of numerous species declined. In Australia, changes in land use after European convicts arrived in the nineteenth century converted the native semiarid vegetation to pioneer grass and later to pine scrub, habitats that were less favorable to native mammals than the original native plant communities.

Download PDF sample

Rated 4.30 of 5 – based on 27 votes