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The region incorporates the largest single area (> 4,000 km 2) in Africa over 3,000 m altitude, and is a crucially important reservoir of globally threatened Afromontane and Afroalpine habitats (Largen & Spawls, Reference Largen and Spawls2010).įig. Hillman ( Reference Hillman1986: 255) considered the Mountains ‘a centre of faunal endemicity, probably with the highest rate of animal endemicity for a terrestrial habitat anywhere in the world’. The Mountains are a high (up to nearly 4,400 m) and extensive massif with rich biodiversity, including many unique, rare, spectacular and threatened taxa. The Bale Mountains lie in southern Ethiopia, east of the Rift Valley ( Fig. Here we present long-term quantitative data for four frog genera endemic to an Afromontane region of exceptional importance but growing conservation concern. For Africa this is exacerbated by a general relative scarcity of attention to conservation biology research despite many threats to its globally important biota (Pimm, Reference Pimm2007). Long-term quantitative data are generally lacking for the vast majority of frog species, particularly in the tropics (Adeba et al., Reference Adeba, Kouassi and Rödel2010 Largen & Spawls, Reference Largen and Spawls2010). Meyer et al., Reference Meyer, Schmidt and Grossenbacher1998 Marsh, Reference Marsh2001 Green, Reference Green2003). Pechmann et al., Reference Pechmann, Scott, Semlitsch, Caldwell, Vitt and Gibbons1991 Semlitsch et al., Reference Semlitsch, Scott, Pechmann, Gibbons, Cody and Smallwood1996) such that long-term data are required to determine population trends without undue influence of stochastic factors (e.g. Many frogs undergo dramatic natural population fluctuations (e.g. Declines have been attributed largely to habitat loss, environmental degradation and/or infectious diseases such as chytridiomycosis (Stuart et al., Reference Stuart, Hoffman, Chanson, Cox, Berridge, Ramani and Young2008 Kilpatrick et al., Reference Kilpatrick, Briggs and Daszak2010). Populations of many frogs have declined alarmingly in recent years, placing nearly one third of the > 6,000 species under threat of extinction (IUCN, 2010). Additionally, we argue that detrimental human exploitation must be halted immediately in at least some parts of the Harenna Forest if a conservation crisis is to be averted. These results expose an urgent need for more amphibian surveys in the Bale Mountains. Chytrid fungus has been found on several frog species in Bale, although no dead or moribund frogs have been encountered. These declines are in association with substantial habitat degradation caused by a growing human population. baleensis appears to have been extirpated at its type locality and at the same site B. The other three species have also declined, at least locally.
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We present long-term quantitative data (individuals encountered per person hour of searching) for four monotypic frog genera endemic to an Afromontane region of exceptional importance but growing conservation concern: one endemic to the Ethiopian highlands ( Spinophrynoides osgoodi) and three endemic to the Bale Mountains ( Altiphrynoides malcolmi, Balebreviceps hillmani, Ericabatrachus baleensis), collected during 15 field trips to the Bale Mountains between 19. Many frogs undergo dramatic natural population fluctuations such that long-term data are required to determine population trends without undue influence of stochastic factors. Declines have been attributed largely to habitat loss, environmental degradation and/or infectious diseases such as chytridiomycosis. The projects we work on and the clients we work with are as diverse as the city itself, and we’re proud to provide planning, engineering, and program management on projects that make a mark on the communities we serve.Populations of many frogs have declined alarmingly in recent years, placing nearly one third of the > 6,000 species under threat of extinction. We also designed the city’s first cycle track so riders can safely bike the entire length of 10th Street, and our Arthur Langford Park design celebrates a local watershed and promotes active recreation on Atlanta’s south side.
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Our team is also working on the Raw Water Supply Program, which will provide the community with water sustainability for the next 100 years. Our location is a big advantage - many of our projects impact the heart of the community, including our work on the City of Atlanta Consent Decree Program where we’ve helped the City save more than $650 million and reduce sewer spills by 80 percent. And with a downtown office in the Peachtree Center International Tower, Stantec is at the center of the action. Atlanta is an exciting place to live, work, or visit.