Although it is believed the Anegada Rock Iguana (Cyclura pinguis) population size has increased somewhat since the headstarting programme began releasing subadults, the habitat is continuing to be degraded. The significant population reduction (> 80%) for this species occurred over a much longer time period than three generations (66 years) ago due to the introduction…
Institution: Universitat Autònoma de Barcelona
Mojave Desert Tortoise
Mojave Desert Tortoise (Gopherus agassizii) was assessed as Critically Endangered A2bce+A4bce based on population reduction (decreasing density), habitat loss of over 80% over three generations (90 years), including past reductions and predicted future declines, as well as the effects of disease (upper respiratory tract disease / mycoplasmosis). Available at: https://www.iucnredlist.org/species/97246272/3150871
El Oro Parakeet
El Oro Parakeet (Pyrrhura orcesi) has a very small population. Remaining habitat is fragmented, and both range and population are thought to be declining. As a result, the species qualifies as Endangered. Available at: https://www.iucnredlist.org/species/22685851/181549899
Darwin’s Fox
Darwin’s Fox (Lycalopex fulvipes) was previously classified in 2004 and 2008 as Critically Endangered based on an estimated population size of “less than 250 mature individuals with at least 90% of the population occurring in one subpopulation” (Chiloé Island) (Jiménez and McMahon 2004). New distribution information (Vila et al. 2004, D’Elia et al. 2013, Farías et…
Worthen’s Sparrow
Worthen’s Sparrow (Spizella wortheni) has a very small and declining population, and fledging success is very low. It is therefore listed as Endangered. Available at: https://www.iucnredlist.org/species/22721182/118141491
Giant Kangaroo Rat
Giant Kangaroo Rat (Dipodomys ingens) is listed as Endangered because its area of occupancy (AOO) is less than 5,000 km², its population is severely fragmented, and there is an ongoing decline in the extent of occurrence (EOO), AOO, and extent and quality of its habitat. Available at: https://www.iucnredlist.org/species/6678/220892537
Wattled Curassow
Wattled Curassow (Crax globulosa) was once widespread across the Amazon basin. High hunting pressure has been causing drastic declines, so that the population is now very small and restricted to scattered, isolated subpopulations. These declines are ongoing and it is therefore listed as Endangered. Available at: https://www.iucnredlist.org/species/22678537/221386350
Marbled Murrelet
Marbled Murrelet (Brachyramphus marmoratus) is still abundant, but it is treated as Endangered because its population is estimated to have undergone a very rapid reduction, especially in the southern portion of its range, which is expected to continue, owing to a variety of threats. Available at: https://www.iucnredlist.org/species/22694870/178976917
Amazonian Manatee
Amazonian Manatee (Trichechus inunguis) is listed as Vulnerable based on a suspected population decline of at least 30% within the next three generations (assuming a generation length of 25 years) due primarily to ongoing levels of hunting throughout most of the region, coupled with increasing incidental calf mortality in the recent years, global warming trends…
Loggerhead Turtle
The global population of the Loggerhead Turtle (Caretta caretta) comprises 10 subpopulations that vary widely in population size, geographic range, and population trends, and are the appropriate units for assessment of global conservation status for this species (Wallace et al. 2010, 2011). As such, assessments have been completed for each of the 10 subpopulations, in…