Wood Thrush Population Sinks and Implications for the Scale of Regional Conservation Strategies

1998 ◽  
Vol 12 (3) ◽  
pp. 576-585 ◽  
Author(s):  
Cheryl L. Trine
Keyword(s):  
Conservation Strategies ◽  
Wood Thrush ◽  
Regional Conservation

Ecotypic variation affects the conservation of North American badgers endangered along their northern range extent

2018 ◽  
Author(s):  
Richard D. Weir ◽  
Trevor A. Kinley ◽  
Richard W. Klafki ◽  
Clayton D. Apps
Keyword(s):  
British Columbia ◽  
Cause Of Death ◽  
Conservation Strategies ◽  
High Fecundity ◽  
Ecological Information ◽  
The Core ◽  
Ecotypic Variation ◽  
Sufficient Energy ◽  
Soil Deposits ◽  
Regional Conservation

This chapter is based on ecological information on 82 radio-tagged badgers (39 F, 43 M) among three study populations in British Columbia, Canada between 1996 and 2010, data that were collected to learn more about the ecology of badgers and consider how variation in their ecology might inform regional conservation strategies. The widely spaced, lower density prey and distribution of soil deposits suitable for digging in British Columbia likely required badgers to use substantially larger areas, relative to the core range, in which to acquire sufficient energy to survive and reproduce. Strikes from automobiles were the primary cause of death among all radio-tagged badgers and this source of mortality is pervasive throughout the limited distribution of badgers in British Columbia. Despite their potential for high fecundity, populations of badgers in British Columbia likely remain at considerable risk compared to those in the core of the species’ range.

scholarly journals Validation of the Calakmul–Laguna de Terminos corridor for jaguarsPanthera oncain south-eastern Mexico

Oryx ◽  
2017 ◽  
Vol 52 (2) ◽  
pp. 292-299 ◽  
Author(s):  
Mircea G. Hidalgo-Mihart ◽  
Fernando M. Contreras-Moreno ◽  
Alejandro Jesús de la Cruz ◽  
Rugieri Juárez-López
Keyword(s):  
Habitat Loss ◽  
Camera Traps ◽  
Conservation Strategies ◽  
Panthera Onca ◽  
Conservation Units ◽  
South Eastern ◽  
Laguna De Terminos ◽  
Regional Conservation

AbstractThe fragmentation of jaguarPanthera oncapopulations as a result of habitat loss is considered to be one of the main challenges for the conservation of the species. Corridors have been proposed as a means of maintaining connectivity and the long-term viability of jaguar populations. The corridor that connects the jaguar conservation units of Calakmul and Laguna de Terminos in Mexico has been considered to be a link for the movement of individuals between these units but its functionality had yet to be verified. During 2012–2014 we divided the corridor into four sections, where we used camera traps to verify the corridor's functionality. We obtained 106 photographs of jaguars, proving the presence of jaguars (including resident jaguars and females) in three of the corridor sections. We did not record any individuals in more than one section of the corridor. The presence of several resident jaguars and females throughout the corridor suggests that portions of the corridor should be incorporated into the Calakmul and Laguna de Terminos jaguar conservation units. Nevertheless, to confirm that the corridor is fully functional it is necessary to obtain evidence of movement of jaguars among the various sections of the corridor. Our results suggest that the area should be included in regional conservation strategies.

scholarly journals Implications of altitudinal migration for conservation strategies to protect tropical biodiversity: a case study of the Resplendent QuetzalPharomacrus mocinnoat Monteverde, Costa Rica

1994 ◽  
Vol 4 (2-3) ◽  
pp. 161-174 ◽  
Author(s):  
George V. N. Powell ◽  
Robin D. Bjork
Keyword(s):  
Costa Rica ◽  
Radio Telemetry ◽  
Management Strategies ◽  
Conservation Strategies ◽  
Mountain Range ◽  
Forest Fragments ◽  
Natural Area ◽  
The Pacific ◽  
Protected Natural Area ◽  
Regional Conservation

SummaryWe documented habitat use by the Resplendent QuetzalPharomacrus mocinno, a large frugivorous bird that breeds in cloud-forests in the highlands of Central America, to assess the adequacy of protection afforded to regional biodiversity by the Monteverde reserve complex, a protected natural area that includes most of the highland forests of the Tilarán mountain range in western Costa Rica. Our results demonstrated that this relatively large (20,000 ha) protected natural area does not adequately protect the area's biodiversity. Through the use of radio-telemetry, we identified the areas on the Pacific slopes that are most critical to altirudinally migrating Quetzals. These forest patches are subject to deforestation and degradation and are rapidly becoming further isolated from other remaining forest. The possibility of the local extirpation of the Quetzal, through continued habitat loss on the Pacific slopes, presents an unusual dilemma for the region because the species is the major attraction for the Ideal tourist industry which now includes over 80 businesses and annually generates over US$5 million in local revenue. Therefore, its extirpation would seriously affect regional economic stability. In order to protect the Monteverde Quetzal population, we propose a regional conservation plan that depends on participation of local landowners to protect their remaining forest fragments and allows for the development of corridors to connect critical habitats as the focus of a regional conservation effort. While the ecological significance of the structure of corridors per se, versus other possible formats, is still being debated, we have selected the corridor format primarily because it is relatively easy for landowners to grasp the concept and the necessity for continuity of the corridor network. This recognition provides an important incentive for participation across property boundaries, promoting cooperation in a group effort rather than as isolated actions. Success of this cooperative plan will provide an example for grass-roots participation in buffer-zone management strategies elsewhere in the Neotropics.

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