Loading data.. Open Bottom Panel. Go to previous Content Download this Content Share this Content Add This Content to Favorites Go to next Content. ← →. Essentials of Conservation Biology Richard B. Primack. Article in The Auk ¿ Que es la Biología de la Conservación? April Gerardo Sanchez-Rojas. Biología de la conservación de especies de patélidos en el umbral Atlántico- .. Essentials of Conservation Biology Richard B. Primack.

Author: Tygok Moogurr
Country: Burundi
Language: English (Spanish)
Genre: Spiritual
Published (Last): 9 July 2015
Pages: 293
PDF File Size: 3.25 Mb
ePub File Size: 5.34 Mb
ISBN: 215-2-33669-643-3
Downloads: 62019
Price: Free* [*Free Regsitration Required]
Uploader: Tulrajas

Smithsonian Institution Press; There are no data available about G.

Télécharger livres par Richard B Primack

The answers to these questions should provide a clearer sense of whether including species on imperiled species lists i. Table 1 summarizes the equivalence of threats between the two lists.

Ochoa-Ochoa and Flores-Villela used a 0. The continental turtle fauna of Mexico is composed of 7 families, 13 genera, and 45 species; when subspecies are included, a total of 61 distinct taxa are recognized.

This situation merits the following questions: Estimating biodiversity and mapping nature. This scale approach has been suggested as a general protocol when studying species distribution Riddle et al. Mollecular Phylogenetics and Evolution.

Third, so far there are no quantitative results condervacion from the public policies on the conservation of non-marine turtles in Mexico.

Griselda Jorge Lara helped with species distribution analysis.

Scandals, audits, and fictions: The results generated in this paper conswrvacion several concerns about turtle conservation biology in Mexico and probably in other lineages. We want to thank John Legler and Richard Vogt for inviting us to the Symposium on Mexican Turtles at the 11th Turtle Survival Alliance TSA meeting, at which the original ideas for this paper were presented and discussed in an early stage. There is also an imperfect understanding of international differences in the protocols for listing species.


La tortuga blanca Dermatemys mawiilas tortugas terrestres Biologla spp.

Télécharger livres par Richard B Primack – Free E-Book Download

Primxck a las subespecies es posible distinguir un total de 61 taxa. Terrapene carolina yucatanawhich is very rare and difficult to find in the wild Jones et al.

Each hexagon contains km2. Chelonian Research Monographs 5. The subspecies concept and its taxonomic application. The answer to that question certainly needs careful thought.

The conservation status of several endemic kinosternid species. Several anonymous reviewers made relevant comments on early versions of this manuscript. Many of these agencies work under the Semarnat agenda the higher-level agency and part of the executive government ; however, internal agendas, lack of communication between agencies, and the frequent political and electoral uses of governmental programs within the Federal Government in Mexico limits conservation efforts and the allocation of financial resources for conservation Mathews, ; Possingham et al.

We tracked the NOM over the three past versions to the species level only because of the lack of subspecies availability data in the previous issues Sedesol, ; Semarnat,and the number of species included changed slightly from 23 into 28 inand to 29 in Most of the increase corresponds with the inclusion of the genus Terrapene and to other taxonomic updates to the list.

There is a group of species missing in the NOM for several reasons i. Threatened, endangered and vulnerable tree species: The Conabio List of Priority Species Conabio, is another list issued by the Mexican government and is based upon a closed workshop of specialists from the federal government, academia, national non-governmental organizations NGOsinternational NGOs such as the IUCN, and private consultants non-academics, but experts on conservation biology.

This is an open-access article distributed under the terms of the Creative Commons Attribution License. We set that percentage based on the finding of Harris et al. Amphibian and Reptile Conservation.


We also generate a categorization of threats based on the presence of species in all the survey lists, ‘5 lists’, ‘4 lists’, ‘3 lists’, and ‘2 lists’ in conjunction with their distribution range within the country. The Central American river turtle D. The conservation status of the world’s reptiles.

Around the world, the most important threats for turtle populations are habitat loss, habitat degradation, poaching, introduced species, and subsidized predators Klemens, The world’s most endangered tortoises and freshwater turtles.

The three recognized Mexican tortoises are also considered a priority for conservation by the Mexican government, but only G. We reviewed each category and cluster them according to the definitions of threats for each category IUCN, b ; Semarnat, A single point inside a hexagon was consider a taxon distributed throughout the entire hexagon, then the sum of all the hexagons with records was used as a proxy for the species’ distribution.

Introducción a la biología de la conservación

Turtles of the world, 7th edition: The dazed and confused identity of Biolohia land tortoise, Gopherus agassizii Testudines, Testudinidae with the description pprimack a new species, and its consequences for conservation.

This indicates that a strategy for conservation of freshwater turtles and tortoises is nonexistent or has never been conceived. To sample and calculate the approximate species area of occupancy we used a grid of 1, hexagons with an area of km 2 each. We included each threat category in our database and also recorded whether or not each species was endemic to Mexico. The ecology, exploitation and conservation of river turtles. A series of other species were contained only in one of the lists i.