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nussear.bib
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@article{Drake,
author = {Drake, Kristina K and Bowen, L and Nussear, K.E. and Esque, T. C. and Berger, A. J. and Custer, N. A. and Waters, S. C. and Johnson, J. D. and Miles, A. K. and Lewison, R. L'},
journal = {Ecoshpere},
title = {{Negative impacts of invasive plants on conservation of sensitive desert wildlife}}
}
@article{Esque2016,
abstract = {ABSTRACT: The distribution and abundance of human-caused disturbances vary greatly through space and time and are cause for concern among land stewards in natural areas of the southwestern border-lands between the USA and Mexico. Human migration and border protection along the international boundary create Unauthorized Trail and Road (UTR) networks across National Park Service lands and other natural areas. UTRs may cause soil erosion and compaction, damage to vegetation and cultural resources, and may stress wildlife or impede their movements. We quantify the density and severity of UTR disturbances in relation to soils, and compare the use of previously established targeted trail assessments (hereafter — targeted assessments) against randomly placed transects to detect trail densities at Coronado National Memorial in Arizona in 2011. While trail distributions were similar between methods, targeted assessments estimated a large portion of the park to have the lowest density category (0–5 trail encounters...},
author = {Esque, T.C. and Inman, R. and Nussear, K.E. and Webb, R.H. and Girard, M.M. and DeGayner, J.},
doi = {http://dx.doi.org/10.3375/043.036.0305},
journal = {Natural Areas Journal},
keywords = {US/Mexico,disturbance,international border,soil impacts,unauthorized trails and roads},
pages = {248--258},
publisher = {Natural Areas Association},
title = {{Comparison of Methods to Monitor the Distribution and Impacts of Unauthorized Travel Routes in a Border Park}},
volume = {July 2016},
year = {2016}
}
@article{JPE:JPE12774,
author = {Nafus, Melia G. and Esque, Todd C. and Averill-Murray, Roy C. and Nussear, Kenneth E. and Swaisgood, Ronald R.},
doi = {10.1111/1365-2664.12774},
issn = {00218901},
journal = {Journal of Applied Ecology},
keywords = {Gopherus agassizii,burrow,camouflage,concealment,desert tortoise,dispersal,refugia,reinforcement,substrate,translocation},
pages = {n/a----n/a},
title = {{Habitat drives dispersal and survival of translocated juvenile desert tortoises}},
url = {http://doi.wiley.com/10.1111/1365-2664.12774},
year = {2016}
}
@article{Tracy2006,
abstract = {Many of the threats to the persistence of populations of sensitive species have physiological or pathological mechanisms, and those mechanisms are best understood through the inherently integrative discipline of physiological ecology. The desert tortoise was listed under the Endangered Species Act largely due to a newly recognized upper respiratory disease thought to cause mortality in individuals and severe declines in populations. Numerous hypotheses about the threats to the persistence of desert tortoise populations involve acquisition of nutrients, and its connection to stress and disease. The nutritional wisdom hypothesis posits that animals should forage not for particular food items, but instead, for particular nutrients such as calcium and phosphorus used in building bones. The optimal foraging hypothesis suggests that, in circumstances of resource abundance, tortoises should forage as dietary specialists as a means of maximizing intake of resources. The optimal digestion hypothesis suggests that tortoises should process ingesta in ways that regulate assimilation rate. Finally, the cost-of-switching hypothesis suggests that herbivores, like the desert tortoise, should avoid switching food types to avoid negatively affecting the microbe community responsible for fermenting plants into energy and nutrients. Combining hypotheses into a resource acquisition theory leads to novel predictions that are generally supported by data presented here. Testing hypotheses, and synthesizing test results into a theory, provides a robust scientific alternative to the popular use of untested hypotheses and unanalyzed data to assert the needs of species. The scientific approach should focus on hypotheses concerning anthropogenic modifications of the environment that impact physiological processes ultimately important to population phenomena. We show how measurements of such impacts as nutrient starvation, can cause physiological stress, and that the endocrine mechanisms involved with stress can result in disease. Finally, our new syntheses evince a new hypothesis. Free molecules of the stress hormone corticosterone can inhibit immunity, and the abundance of "free corticosterone" in the blood (thought to be the active form of the hormone) is regulated when the corticosterone molecules combine with binding globulins. The sex hormone, testosterone, combines with the same binding globulin. High levels of testosterone, naturally occurring in the breeding season, may be further enhanced in populations at high densities, and the resulting excess testosterone may compete with binding globulins, thereby releasing corticosterone and reducing immunity to disease. This sequence could result in physiological and pathological phenomena leading to population cycles with a period that would be essentially impossible to observe in desert tortoise. Such cycles could obscure population fluctuations of anthropogenic origin.},
author = {Tracy, C Richard and Nussear, K E and Esque, T C and Dean-Bradley, K and Tracy, C R and Defalco, L A and Castle, K T and Zimmerman, L C and Espinoza, R E and Barber, A M},
doi = {10.1093/icb/icl054},
file = {:Users/knussear/Research/Scientific Papers/Mendeley PDFs//Tracy et al.{\_}2006.pdf:pdf},
issn = {1540-7063},
journal = {Integrative and comparative biology},
keywords = {disease,nutrition,stress},
mendeley-tags = {disease,nutrition,stress},
month = {dec},
number = {6},
pages = {1191--205},
pmid = {21672817},
title = {{The importance of physiological ecology in conservation biology.}},
url = {http://icb.oxfordjournals.org/content/46/6/1191.short},
volume = {46},
year = {2006}
}