Scope Squirrel Case Study

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Background The Nelson's Antelope Squirrel (Ammosperophilus nelsoni), or NAS, is found in the San Joaquin Valley of North America between the southern part of the Sierra Nevada and the Tehachapi Mountains (Hawbecker 1953). NAS has been found to prefer habitat containing Desert Saltbush (Atriplex polycarpa) for it's burrows (Hawbecker 1953). Red-Stemmed Filaree (Erodium cicutarium) and Red Brome (Bromus rubens) are staples of NAS' diet along with insects such as the June Beetle (Phyllophaga errans) and the Valley Grasshopper (Oedaleonotus enigma) (Hawbecker 1953). Many predators inhabit the NAS' range such as the Rattlesnake (Crotalus viridis), Red-Tailed Hawk (Buteo borealis), and numerous owl species, yet predation from these species on …show more content…
conducted a study of the San Joquin Valley taking into consideration historical records, endemic species, climate, and other factors to help better understand the San Joaquin Valley as a desert and not some other kind of habitat (Germano et al. 2011). There has been some well rounded management of not necessarily the NAS itself, but the habitat in which it resides (Germano et al. 2011). There has been the establishment of the Carrizo Plain National Monument, which is 100,000 hectres and is home to many NAS' (Germano et al. 2011, Koprowski 2017). The foreign grasses that have been introduced into the Valley have been shown to be a risk to many imperiled species, giving us the opportunity to manage these grasses better (Germano et al 2001). Livestock grazing on the lands in which these nonnative grasses were planted in the first place in order to try and reduce their spread and influence on their environment (Germano et al. 2001). Other populations of NAS are also protected in spaces of the Valley owned by The Nature Conservancy and California Department of Fish and Game (Kowproski 2017). While a lot is being done to indirectly and directly help prevent the extinction of NAS, there is more that needs to be done (Germano et al. 2001, Germano et al. 2011, Kowproski 2017). Populations of NAS need to be studied for locations, breeding, and numbers themselves (Kowproski 2017). Further protection of land, public and private, that NAS calls home is also essential in keeping the species from decline (Kowproski 2017). Possibly the most important factor in preserving the NAS now is getting the public's attention, wallet, and votes on the San Joaquin Valley and NAS as a species (Germano et al. 2001). Climate change inevitability will also determine how the NAS will do in an already torn up habitat (Germano et al. 2011). Habitats such as deserts are going to get less frequent rainfall, less rainfall overall, and when it does rain it will be in larger amounts (Dr.

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