36 research outputs found
Conservation of the endemic dwarf carnivores of Cozumel Island, Mexico.
Cozumel Island, Mexico, harbours two endemic species of dwarf procyonids: the Pygmy Raccoon Procyon pygmaeus and the Dwarf Coati Nasua nelsoni. Both species are Critically Endangered, and are among the world’s most threatened Carnivora. Here we summarise the research we have been conducting on their ecology, evolution, genetics, and conservation. We also summarise the conservation initiatives we have been undertaking and promoting in order to advance the conservation of these unique species and their habitats. This effort illustrates the importance of an interdisciplinary approach in conservation science and action in maximising effectiveness. Nevertheless, the precarious status of the species make it imperative to continue and expand the work we have carried out in Cozumel to prevent two imminent global extinctions.<br /
International lending and resource development in Mexico: can environmental quality be assured?
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Herbage production-forest overstory relationships in two Arizona ponderosa pine forests
Utilizing source data for annual herbage production which had been obtained through repeated measurements, though not necessarily taken in each year, in 2 Arizona ponderosa pine (Pinus ponderosa) forests from 1959 to 1980, 18 herbage production-forest overstory regression equations were developed and statistically analyzed. In addition to logarithmic and exponential transformations, a hyperbolic transformation met the specific acceptance criteria. Soils were stratified for some herbage components to improve sampling efficiencies. The regression equations presented are considered more useful for long-term planning purposes than for predicting the level of herbage production in a particular year.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202
Multicriteria Group Decision-making Model for Environmental Conflict Analysis in the Cape Region, Mexico
This paper is concerned with developing a model for group decision making under multiple criteria. The multiple criteria group decision making (MCGDM)problem involves a set of feasible land use patterns that are evaluated on the basis of multiple, conflicting and noncommensurate criteria by a group of individuals. The model integrates the Analytic Hierarchy Process (AHP) and an integer mathematical programming method. The former provides a tool for structuring the decision problem and determining land suitability for different socio-economicactivities (the uses of land), the latter is used to identify the land use pattern that maximizes consensus among interest groups. The model is used to analyze environmental conflict over land resource allocation in the Cape Region of Mexico.