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Eric C. Hellgren - Publications

Affiliations: 
Zoology Southern Illinois University at Carbondale, Carbondale, IL 
Area:
Ecology Biology, Zoology Biology, Computer Science

126 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2018 Ramakrishnan S, Wolf AJ, Hellgren EC, Moody RW, Bogosian V. Diet Selection by a Lizard Ant-Specialist in an Urban System Bereft of Preferred Prey Journal of Herpetology. 52: 79-85. DOI: 10.1670/16-072  0.72
2016 Van Der Merwi J, Hellgren EC, Schauber EM, Peters DPC. Variation in metapopulation dynamics of a wetland mammal: The effect of hydrology Ecosphere. 7. DOI: 10.1002/Ecs2.1275  0.72
2015 Cooney SA, Schauber EM, Hellgren EC. Ranging behavior of marsh rice rats in a southern Illinois wetland complex Journal of Mammalogy. 96: 732-741. DOI: 10.1093/Jmammal/Gyv069  0.72
2015 Smith JB, Nielsen CK, Hellgren EC. Suitable habitat for recolonizing large carnivores in the midwestern USA Oryx. DOI: 10.1017/S0030605314001227  0.72
2015 Cooney SA, Schauber EM, Hellgren EC. Comparing permeability of matrix cover types for the marsh rice rat (Oryzomys palustris) Landscape Ecology. 30: 1307-1320. DOI: 10.1007/S10980-015-0185-5  0.72
2015 Lesmeister DB, Nielsen CK, Schauber EM, Hellgren EC. Spatial and temporal structure of a mesocarnivore guild in midwestern north America Wildlife Monographs. 191: 1-61. DOI: 10.1002/Wmon.1015  0.72
2014 Limb RF, Engle DM, Alford AL, Hellgren EC. Plant community response following removal of Juniperus virginiana from tallgrass prairie: Testing for restoration limitations Rangeland Ecology and Management. 67: 397-405. DOI: 10.2111/Rem-D-13-00147.1  0.72
2014 Wolf AJ, Hellgren EC, Schauber EM, Bogosian V, Kazmaier RT, Ruthven DC, Moody RW. Variation in vital-rate sensitivity between populations of Texas horned lizards Population Ecology. 56: 619-631. DOI: 10.1007/S10144-014-0450-5  0.72
2014 Smith JB, Nielsen CK, Hellgren EC. Illinois resident attitudes toward recolonizing large carnivores Journal of Wildlife Management. 78: 930-943. DOI: 10.1002/Jwmg.718  0.72
2013 Wolf AJ, Hellgren EC, Bogosian V, Moody RW. Effects of habitat disturbance on Texas Horned Lizards: An urban case study Herpetologica. 69: 265-281. DOI: 10.1655/Herpetologica-D-12-00062.1  0.72
2013 Gillen CA, Hellgren EC. Effects of forest composition on trophic relationships among mast production and mammals in central hardwood forest Journal of Mammalogy. 94: 417-426. DOI: 10.1644/12-Mamm-A-138.1  0.72
2012 Alford AL, Hellgren EC, Limb R, Engle DM. Experimental tree removal in tallgrass prairie: variable responses of flora and fauna along a woody cover gradient. Ecological Applications : a Publication of the Ecological Society of America. 22: 947-58. PMID 22645823 DOI: 10.1890/10-1288.1  0.72
2012 Bogosian V, Hellgren EC, Moody RW. Assemblages of amphibians, reptiles, and mammals on an urban military base in Oklahoma Southwestern Naturalist. 57: 277-284. DOI: 10.1894/0038-4909-57.3.277  0.72
2012 Bogosian V, Hellgren EC, Sears MW, Moody RW. High-resolution niche models via a correlative approach: Comparing and combining correlative and process-based information Ecological Modelling. 237: 63-73. DOI: 10.1016/J.Ecolmodel.2012.04.017  0.72
2012 Croteau EK, Heist EJ, Nielsen CK, Hutchinson JR, Hellgren EC. Microsatellites and mitochondrial DNA reveal regional population structure in bobcats (Lynx rufus) of North America Conservation Genetics. 13: 1637-1651. DOI: 10.1007/S10592-012-0416-0  0.72
2011 Hellgren EC, Polnaszek TJ. Survival, habitat selection, and body condition of the woodchuck (Marmota monax) across an urban-rural gradient American Midland Naturalist. 165: 150-161. DOI: 10.1674/0003-0031-165.1.150  0.72
2011 Eubanks BW, Hellgren EC, Nawrot JR, Bluett RD. Habitat associations of the marsh rice rat (Oryzomys palustris) in freshwater wetlands of southern Illinois Journal of Mammalogy. 92: 552-560. DOI: 10.1644/10-Mamm-A-289.1  0.72
2011 Onorato DP, Criffield M, Lotz M, Cunningham M, Mcbride R, Leone EH, Bass OL, Hellgren EC. Habitat selection by critically endangered Florida panthers across the diel period: Implications for land management and conservation Animal Conservation. 14: 196-205. DOI: 10.1111/J.1469-1795.2010.00415.X  0.72
2011 Cooper JD, Waser PM, Hellgren EC, Gabor TM, DeWoody JA. Is sexual monomorphism a predictor of polygynandry? Evidence from a social mammal, the collared peccary Behavioral Ecology and Sociobiology. 65: 775-785. DOI: 10.1007/S00265-010-1081-2  0.72
2010 Cooper JD, Vitalis R, Waser PM, Gopurenko D, Hellgren EC, Gabor TM, DeWoody JA. Quantifying male-biased dispersal among social groups in the collared peccary (Pecari tajacu) using analyses based on mtDNA variation. Heredity. 104: 79-87. PMID 19639005 DOI: 10.1038/Hdy.2009.102  0.72
2010 Criffield MA, Hellgren EC, Leslie DM. Density estimation and survey validation for swift fox Vulpes velox in Oklahoma Acta Theriologica. 55: 53-60. DOI: 10.4098/J.At.0001-7051.022.2009  0.72
2010 Hellgren EC, Burrow AL, Kazmaier RT, Ruthven DC. The effects of winter burning and grazing on resources and survival of texas horned lizards in a thornscrub ecosystem Journal of Wildlife Management. 74: 300-309. DOI: 10.2193/2009-090  0.72
2010 Hellgren EC. Journal of Wildlife Management: Editor's note Journal of Wildlife Management. 74: 916. DOI: 10.2193/0022-541X-74.5.916  0.72
2010 Limb RF, Engle DM, Alford AL, Hellgren EC. Tallgrass prairie plant community dynamics along a canopy cover gradient of eastern redcedar (Juniperus virginiana L.) Rangeland Ecology and Management. 63: 638-644. DOI: 10.2111/Rem-D-09-00056.1  0.72
2010 Cooper JD, Waser PM, Gopurenko D, Hellgren EC, Gabor TM, Dewoody JA. Measuring sex-biased dispersal in social mammals: Comparisons of nuclear and mitochondrial genes in collared peccaries Journal of Mammalogy. 91: 1413-1424. DOI: 10.1644/09-Mamm-A-313.1  0.72
2010 Walter WD, Leslie DM, Hellgren EC, Engle DM. Identification of subpopulations of North American elk (Cervus elaphus L.) using multiple lines of evidence: Habitat use, dietary choice, and fecal stable isotopes Ecological Research. 25: 789-800. DOI: 10.1007/S11284-010-0709-Z  0.72
2009 Hellgren EC. In pursuit of elegance in presentation Journal of Wildlife Management. 73: 173. DOI: 10.2193/2008-500  0.72
2009 Criffield MA, Reichard MV, Hellgren EC, Leslie DM, Freel K. Parasites of Swift Foxes (Vulpes velox) in the Oklahoma Panhandle Southwestern Naturalist. 54: 492-498. DOI: 10.1894/Md-13.1  0.72
2009 Van Den Bussche RA, Lack JB, Onorato DP, Gardner-Santana LC, McKinney BR, Villalobos JD, Chamberlain MJ, White D, Hellgren EC. Mitochondrial DNA phylogeography of black bears (Ursus americanus) in central and southern north America: Conservation implications Journal of Mammalogy. 90: 1075-1082. DOI: 10.1644/08-Mamm-A-276.1  0.72
2008 Wack CL, Fox SF, Hellgren EC, Lovern MB. Effects of sex, age, and season on plasma steroids in free-ranging Texas horned lizards (Phrynosoma cornutum) General and Comparative Endocrinology. 155: 589-596. PMID 18048031 DOI: 10.1016/J.Ygcen.2007.10.005  0.72
2008 Disney MR, Hellgren EC, Davis CA, Leslie DM, Engle DM. Relative abundance of mesopredators and size of oak patches in the cross-timbers ecoregion Southwestern Naturalist. 53: 214-223. DOI: 10.1894/0038-4909(2008)53[214:Raomas]2.0.Co;2  0.72
2008 Ganguli AC, Engle DM, Mayer PM, Hellgren EC. Plant community diversity and composition provide little resistance to Juniperus encroachment Botany. 86: 1416-1426. DOI: 10.1139/B08-110  0.72
2008 Pat Shanks WC, Hellgren EC, Stricker C, Gemery-Hill PA, Onorato DP. Stable isotope and trace element studies of black bear hair, Big Bend Ecosystem, Texas and Mexico Us Geological Survey Circular. 77-84.  0.72
2007 Downey PJ, Hellgren EC, Caso A, Carvajal S, Frangioso K. Hair snares for noninvasive sampling of felids in North America: Do gray foxes affect success? Journal of Wildlife Management. 71: 2090-2094. DOI: 10.2193/2006-500  0.72
2007 Hellgren EC, Bales SL, Gregory MS, Leslie DM, Clark JD. Testing a Mahalanobis distance model of black bear habitat use in the Ouachita Mountains of Oklahoma Journal of Wildlife Management. 71: 924-928. DOI: 10.2193/2006-031  0.72
2007 Endriss DA, Hellgren EC, Fox SF, Moody RW. Demography of an urban population of the Texas horned lizard (Phrynosoma cornutum) in Central Oklahoma Herpetologica. 63: 320-331. DOI: 10.1655/0018-0831(2007)63[320:Doaupo]2.0.Co;2  0.72
2007 Hellgren EC, Ruthven DC. Progeny sex ratio in a sexually monomorphic ungulate, the collared peccary (Tayassu tajacu) Journal of Mammalogy. 88: 124-128. DOI: 10.1644/06-Mamm-012R1.1  0.72
2007 Ilse LM, Hellgren EC. Indirect interactions among dendrophages: Porcupines predispose pinyon pines to bark beetle attack Forest Ecology and Management. 242: 217-226. DOI: 10.1016/J.Foreco.2007.01.035  0.72
2007 Onorato DP, Hellgren EC, Van Den Bussche RA, Doan-Crider DL, Skiles JR. Genetic structure of American black bears in the desert southwest of North America: Conservation implications for recolonization Conservation Genetics. 8: 565-576. DOI: 10.1007/S10592-006-9192-Z  0.72
2005 Clark JE, Hellgren EC, Parsons JL, Jorgensen EE, Engle DM, Leslie DM. Nitrogen outputs from fecal and urine deposition of small mammals: implications for nitrogen cycling. Oecologia. 144: 447-55. PMID 15942760 DOI: 10.1007/S00442-005-0004-9  0.72
2005 Mitchell FS, Onorato DP, Hellgren EC, Skiles JR, Harveson LA. Winter ecology of American black bears in a desert montane island Wildlife Society Bulletin. 33: 164-171. DOI: 10.2193/0091-7648(2005)33[164:Weoabb]2.0.Co;2  0.72
2005 Bales SL, Hellgren EC, Leslie DM, Hemphill J. Dynamics of a recolonizing population of black bears in the Ouachita Mountains of Oklahoma Wildlife Society Bulletin. 33: 1342-1351. DOI: 10.2193/0091-7648(2005)33[1342:Doarpo]2.0.Co;2  0.72
2005 Clark JE, Hellgren EC, Jorgensen EE, Leslie DM. Population dynamics of harvest mice (Reithrodontomys fulvescens and R. montanus) across a nitrogen-amended old field American Midland Naturalist. 154: 240-252. DOI: 10.1674/0003-0031(2005)154[0240:Pdohmr]2.0.Co;2  0.72
2005 Moeller BA, Hellgren EC, Ruthven DC, Kazmaier RT, Synatzske DR. Temporal differences in activity patterns of male and female Texas Horned Lizards (Phrynosoma cornutum) in southern Texas Journal of Herpetology. 39: 336-339. DOI: 10.1670/0022-1511(2005)039[0336:Tdiapo]2.0.Co;2  0.72
2005 Horncastle VJ, Hellgren EC, Mayer PM, Ganguli AC, Engle DM, Leslie DM. Implications of invasion by Juniperus virginiana on small mammals in the southern Great Plains Journal of Mammalogy. 86: 1144-1155. DOI: 10.1644/05-Mamm-A-015R1.1  0.72
2005 Parsons JL, Hellgren EC, Jorgensen EE, Leslie DM. Neonatal growth and survival of rodents in response to variation in maternal dietary nitrogen: Life history strategy vs dietary niche Oikos. 110: 297-308. DOI: 10.1111/J.0030-1299.2005.13610.X  0.72
2005 Hellgren EC, Onorato DP, Skiles JR. Dynamics of a black bear population within a desert metapopulation Biological Conservation. 122: 131-140. DOI: 10.1016/J.Biocon.2004.07.007  0.72
2004 Harveson LA, Guthery FS, Hellgren EC. Invertebrate consumption by breeding Northern bobwhites and its relation to production Southwestern Naturalist. 49: 472-477. DOI: 10.1894/0038-4909(2004)049<0472:Icbbnb>2.0.Co;2  0.72
2004 Horncastle VJ, Hellgren EC, Mayer PM, Engle DM, Leslie DM. Differential consumption of eastern red cedar (Juniperus virginiana) by avian and mammalian guilds: Implications for tree invasion American Midland Naturalist. 152: 255-267. DOI: 10.1674/0003-0031(2004)152[0255:Dcoerc]2.0.Co;2  0.72
2004 Kasparian MA, Hellgren EC, Ginger SM, Levesque LP, Clark JE, Winkelman DL, Engle DM. Population Characteristics of Virginia Opossum in the Cross Timbers during Raccoon Reduction American Midland Naturalist. 151: 154-163. DOI: 10.1674/0003-0031(2004)151[0154:Pcovoi]2.0.Co;2  0.72
2004 Onorato DP, Hellgren EC, Van Den Bussche RA, Doan-Crider DL. Phylogeographic patterns within a metapopulation of black bears (Ursus americanus) in the American southwest Journal of Mammalogy. 85: 140-147. DOI: 10.1644/1545-1542(2004)085<0140:Ppwamo>2.0.Co;2  0.72
2004 Onorato DP, Hellgren EC, Van Den Bussche RA, Skiles JR. Paternity and relatedness of American black bears recolonizing a desert montane island Canadian Journal of Zoology. 82: 1201-1210. DOI: 10.1139/Z04-097  0.72
2003 Woods HA, Hellgren EC. Seasonal changes in the physiology of male Virginia opossums (Didelphis virginiana): signs of the Dasyurid semelparity syndrome? Physiological and Biochemical Zoology : Pbz. 76: 406-17. PMID 12905127 DOI: 10.1086/374285  0.72
2003 Clark JE, Hellgren EC, Jorgensen EE. Catastrophic Decline of a High-Density Population of Hispid Cotton Rats (Sigmodon Hispidus) in Central Oklahoma Southwestern Naturalist. 48: 467-471. DOI: 10.1894/0038-4909(2003)048<0467:Cdoahp>2.0.Co;2  0.72
2003 Clark JE, Parsons JL, Hellgren EC, Jorgensen EE, Leslie DM. Nitrogen concentration of stomach contents as an index of dietary nitrogen for Sigmodon hispidus Journal of Mammalogy. 84: 1399-1409. DOI: 10.1644/Brg-105  0.72
2003 Ginger SM, Hellgren EC, Kasparian MA, Levesque LP, Engle DM, Leslie DM. Niche shift by Virginia opossum following reduction of a putative competitor, the raccoon Journal of Mammalogy. 84: 1279-1291. DOI: 10.1644/103  0.72
2003 Clark JE, Hellgren EC, Jorgensen EE, Tunnell SJ, Engle DM, Leslie DM. Population dynamics of hispid cotton rats (Sigmodon hispidus) across a nitrogen-amended landscape Canadian Journal of Zoology. 81: 994-1003. DOI: 10.1139/Z03-084  0.72
2003 Onorato DP, Hellgren EC, Mitchell FS, Skiles JR. Home range and habitat use of American black bears on a desert Montane Island in Texas Ursus. 14: 120-129.  0.72
2002 Burkepile NA, Hewitt DG, Waggerman GL, Small MF, Hellgren EC. Effects of methyl parathion on white-winged dove productivity and reproductive behavior Journal of Wildlife Management. 66: 202-211. DOI: 10.2307/3802886  0.72
2002 James JB, Hellgren EC, Masters RE. Landscape correlates of wildlife-related power outages at electrical substations Wildlife Society Bulletin. 30: 148-155.  0.72
2001 Gabor TM, Hellgren EC, Silvy NJ. Multi-scale habitat partitioning in sympatric suiforms Journal of Wildlife Management. 65: 99-110. DOI: 10.2307/3803281  0.72
2001 Kazmaier RT, Hellgren EC, Ruthven DC. Habitat selection by the Texas tortoise in a managed thornscrub ecosystem Journal of Wildlife Management. 65: 653-660. DOI: 10.2307/3803016  0.72
2001 Burrow AL, Kazmaier RT, Hellgren EC, Ruthven DC. Microhabitat selection by Texas horned lizards in southern Texas Journal of Wildlife Management. 65: 645-652. DOI: 10.2307/3803015  0.72
2001 Maehr DS, Hellgren EC, Bingham RL, Doan-Crider DL. Body mass of American black bears from Florida and Mexico Southwestern Naturalist. 46: 129-133. DOI: 10.2307/3672390  0.72
2001 Kazmaier RT, Hellgren EC, Synatzske DR, Rutledge JC. Mark-recapture analysis of population parameters in a Texas tortoise (Gopherus berlandieri) population in Southern Texas Journal of Herpetology. 35: 410-417. DOI: 10.2307/1565959  0.72
2001 Ilse LM, Hellgren EC. Demographic and behavioral characteristics of North American porcupines (Erethizon dorsatum) in pinyon-juniper woodlands of Texas American Midland Naturalist. 146: 329-338. DOI: 10.1674/0003-0031(2001)146[0329:Dabcon]2.0.Co;2  0.72
2001 Kazmaier RT, Hellgren EC, Synatzske DR. Patterns of behavior in the Texas tortoise, Gopherus berlandieri: A multivariate ordination approach Canadian Journal of Zoology. 79: 1363-1371. DOI: 10.1139/Z01-092  0.72
2001 Kazmaier RT, Hellgren EC, Ruthven DC, Synatzske DR. Effects of grazing on the demography and growth of the Texas tortoise Conservation Biology. 15: 1091-1101. DOI: 10.1046/J.1523-1739.2001.0150041091.X  0.72
2001 Fulbright TE, Frank Robbins W, Hellgren EC, DeYoung RW, Humphreys ID. Lack of diet partitioning by sex in reintroduced desert bighorn sheep Journal of Arid Environments. 48: 49-57. DOI: 10.1006/Jare.2000.0738  0.72
2000 Gabor TM, Hellgren EC. Variation in peccary populations: Landscape composition or competition by an invader? Ecology. 81: 2509-2524. DOI: 10.1890/0012-9658(2000)081[2509:Vipplc]2.0.Co;2  0.72
2000 Hellgren EC, Kazmaier RT, Ruthven DC, Synatzske DR. Variation in tortoise life history: Demography of Gopherus berlandieri Ecology. 81: 1297-1310. DOI: 10.1890/0012-9658(2000)081[1297:Vitlhd]2.0.Co;2  0.72
2000 Deyoung RW, Hellgren EC, Fulbright TE, Robbins WF, Humphreys ID, Krausman PR. Modelling nutritional carrying capacity for translocated desert bighorn sheep in Western Texas Restoration Ecology. 8: 57-65. DOI: 10.1046/J.1526-100X.2000.80066.X  0.72
1999 James JB, Hellgren EC, Masters RE. Effects of deterrents on avian abundance and nesting density in electrical substations in Oklahoma Journal of Wildlife Management. 63: 1009-1017. DOI: 10.2307/3802816  0.72
1999 Gabor TM, Hellgren EC, Van Den Bussche RA, Silvy NJ. Demography, sociospatial behaviour and genetics of feral pigs (Sus scrofa) in a semi-arid environment Journal of Zoology. 247: 311-322. DOI: 10.1111/J.1469-7998.1999.Tb00994.X  0.72
1999 Hellgren EC, Maehr DS. Habitat fragmentation and black bears in the eastern United States Ncasi Technical Bulletin. 230-231.  0.72
1999 Hellgren EC, Vaughan MR. Conservation and management of isolated black bear populations in the southeastern Coastal Plain of the United States Ncasi Technical Bulletin. 231.  0.72
1998 Small MF, Pruett CL, Hewitt DG, Hellgren EC, Perrigo GH, Waggerman GL. Cholinesterase activity in white-winged doves exposed to methyl parathion. Journal of Wildlife Diseases. 34: 698-703. PMID 9813838 DOI: 10.7589/0090-3558-34.4.698  0.72
1998 Tomasi TE, Hellgren EC, Tucker TJ. Thyroid hormone concentrations in black bears (Ursus americanus): Hibernation and pregnancy effects General and Comparative Endocrinology. 109: 192-199. PMID 9473364 DOI: 10.1006/Gcen.1997.7018  0.72
1998 Taylor RB, Hellgren EC, Gabor TM, Ilse LM. Reproduction of feral pigs in Southern Texas Journal of Mammalogy. 79: 1325-1331. DOI: 10.2307/1383024  0.72
1998 Hellgren EC. Physiology of hibernation in bears Ursus. 10: 467-477.  0.72
1997 Hellgren EC, Pitts WJ. Sodium economy in white-tailed deer (Odocoileus virginianus). Physiological Zoology. 70: 547-55. PMID 9279921 DOI: 10.1086/515861  0.72
1997 Gabor TM, Hellgren EC, Silvy NJ. Immobilization of collared peccaries (Tayassu tajacu) and feral hogs (Sus scrota) with Telazol® and xylazine Journal of Wildlife Diseases. 33: 161-164. PMID 9027707 DOI: 10.7589/0090-3558-33.1.161  0.72
1997 Asleson MA, Hellgren EC, Varner LW. Effects of seasonal protein restriction on antlerogenesis and body mass in adult male white-tailed deer Journal of Wildlife Management. 61: 1098-1107. DOI: 10.2307/3802107  0.72
1997 Hellgren EC, Maehr DS, Doan-Crider DL. Serum chemistry of southern populations of black bears (Ursus americanus) American Midland Naturalist. 137: 95-105. DOI: 10.2307/2426758  0.72
1997 Gabor TM, Hellgren EC, Silvy NJ. Renal morphology of sympatric suiforms: Implications for competition Journal of Mammalogy. 78: 1089-1095. DOI: 10.2307/1383051  0.72
1997 Hellgren EC, Lochmiller RL. Requirements for reproduction in the hispid cotton rat (Sigmodon hispidus): A re-evaluation Journal of Mammalogy. 78: 691-694. DOI: 10.2307/1382921  0.72
1997 Taylor RB, Hellgren EC. Diet of feral hogs in the western South Texas plains Southwestern Naturalist. 42: 33-39.  0.72
1996 Bruce DS, Bailey EC, Setran DP, Tramell MS, Jacobson D, Oeltgen PR, Horton ND, Hellgren EC. Circannual variations in bear plasma albumin and its opioid-like effects on guinea pig ileum. Pharmacology, Biochemistry, and Behavior. 53: 885-9. PMID 8801593 DOI: 10.1016/0091-3057(95)02153-1  0.72
1996 Wilber PG, Hellgren EC, Gabor TM. Coccidia of the collared peccary (Tayassu tajacu) in southern Texas with descriptions of three new species of Eimeria (Apicomplexa: Eimeriidae) Journal of Parasitology. 82: 624-629. PMID 8691371  0.72
1996 Asleson MA, Hellgren EC, Varner LW. Nitrogen requirements for antler growth and maintenance in white-tailed deer Journal of Wildlife Management. 60: 744-752. DOI: 10.2307/3802373  0.72
1996 Doan-Crider DL, Hellgren EC. Population characteristics and winter ecology of black bears in Coahuila, Mexico Journal of Wildlife Management. 60: 398-407. DOI: 10.2307/3802242  0.72
1996 Delgiudice GD, Asleson MA, Varner L, Hellgren EC, Riggs MR. Creatinine ratios in random sampled and 24-hour urines of white-tailed deer Journal of Wildlife Management. 60: 381-387. DOI: 10.2307/3802239  0.72
1996 Sams MG, Lochmiller RL, Hellgren EC, Warde WD, Varner LW. Morphometric predictors of neonatal age for white-tailed deer Wildlife Society Bulletin. 24: 53-57.  0.72
1995 Hellgren EC, Synatzske DR, Oldenburg PW, Guthery FS. Demography of a collared peccary population in south Texas Journal of Wildlife Management. 59: 153-163. DOI: 10.2307/3809128  0.72
1995 Ilse LM, Hellgren EC. Resource partitionining in sympatric populations of collared peccaries and feral hogs in southern Texas Journal of Mammalogy. 76: 784-799. DOI: 10.2307/1382747  0.72
1995 Ilse LM, Hellgren EC. Spatial use and group dynamics of sympatric collared peccaries and feral hogs in southern Texas Journal of Mammalogy. 76: 993-1002. DOI: 10.2307/1382593  0.72
1994 Ruthven DC, Hellgren EC, Beasom SL. Effects of root plowing on white-tailed deer condition, population status, and diet Journal of Wildlife Management. 58: 59-70. DOI: 10.2307/3809549  0.72
1994 Garshelis DL, Hellgren EC. Variation in reproductive biology of male black bears Journal of Mammalogy. 75: 175-188. DOI: 10.2307/1382249  0.72
1993 Grasman BT, Hellgren EC. Phosphorus nutrition in white-tailed deer: Nutrient balance, physiological responses, and antler growth Ecology. 74: 2279-2296. DOI: 10.2307/1939581  0.72
1993 Ruthven DC, Fulbright TE, Beasom SL, Hellgren EC. Long-term effects of root plowing on vegetation in the eastern south Texas plains Journal of Range Management. 46: 351-354.  0.72
1991 Jenks JA, Lochmiller RL, Leslie DM, Hellgren EC, Melchiors MA, Mathis GT. Glycosylated hemoglobin as a stable alternative to serum glucose in white-tailed deer Journal of Wildlife Diseases. 27: 502-505. PMID 1920675 DOI: 10.7589/0090-3558-27.3.502  0.72
1991 Hellgren EC, Vaughan MR, Stauffer DF. Macrohabitat use by black bears in a southeastern wetland Journal of Wildlife Management. 55: 442-448. DOI: 10.2307/3808972  0.72
1990 Hellgren EC, Vaughan MR, Kirkpatrick RL, Scanlon PF. Serial changes in metabolic correlates of hibernation in female black bears Journal of Mammalogy. 71: 291-300.  0.72
1989 Hellgren EC, Vaughan MR. Rectal temperatures of immobilized, snare-trapped black bears in Great Dismal Swamp. Journal of Wildlife Diseases. 25: 440-3. PMID 2761021 DOI: 10.7589/0090-3558-25.3.440  0.72
1989 Hellgren EC, Lochmiller RL, Amoss MS, Seager SW, Magyar SJ, Coscarelli KP, Grant WE. Seasonal variation in serum testosterone, testicular measurements and semen characteristics in the collared peccary (Tayassu tajacu). Journal of Reproduction and Fertility. 85: 677-86. PMID 2704003 DOI: 10.1530/Jrf.0.0850677  0.72
1989 Hellgren EC, Vaughan MR. Demographic analysis of a black bear population in the Great Dismal Swamp Journal of Wildlife Management. 53: 969-977. DOI: 10.2307/3809597  0.72
1989 Lochmiller RL, Hellgren EC, Varner LW, McBee K, Grant WE. Body condition indices for malnourished collared peccaries Journal of Wildlife Management. 53: 205-209. DOI: 10.2307/3801333  0.72
1989 Hellgren EC, Vaughan MR. Denning ecology of black bears in a southeastern wetland Journal of Wildlife Management. 53: 347-353. DOI: 10.2307/3801136  0.72
1989 Hellgren EC, Vaughan MR, Kirkpatrick RL. Seasonal patterns in physiology and nutrition of black bears in Great Dismal Swamp, Virginia-North Carolina Canadian Journal of Zoology. 67: 1837-1850. DOI: 10.1139/Z89-262  0.72
1988 Lochmiller RL, Hellgren EC, Varner LW, Grant WE. Indices for physiological assessment of nutritional condition in pregnant collared peccaries (Tayassu tajacu). Journal of Wildlife Diseases. 24: 496-506. PMID 3411706 DOI: 10.7589/0090-3558-24.3.496  0.72
1987 Lochmiller RL, Hellgren EC, Grant WE, Varner LW. Urea concentration in collared peccary milk as an indicator of protein nutritional status. Journal of Wildlife Diseases. 23: 518-20. PMID 3625919 DOI: 10.7589/0090-3558-23.3.518  0.72
1987 Kelley JK, Lochmiller RL, Hellgren EC, Grant WE. Vitamin A levels of blood in collared peccaries (Tayassu tajacu) from south Texas. Comparative Biochemistry and Physiology. a, Comparative Physiology. 86: 751-3. PMID 2882908 DOI: 10.1016/0300-9629(87)90636-0  0.72
1987 LOCHMILLER RL, HELLGREN EC, GRANT WE. Influence of moderate nutritional stress during gestation on reproduction of Collared peccaries (Tayassu tajacu) Journal of Zoology. 211: 321-328. DOI: 10.1111/J.1469-7998.1987.Tb01537.X  0.72
1986 Lochmiller RL, Hellgren EC, Grant WE. Absolute and allometric relationships between internal morphology and body mass in the adult collared peccary, Tayassu tajacu (Tayassuidae). Growth. 50: 296-316. PMID 3803989  0.72
1986 Lochmiller RL, Hellgren EC, Grant WE. Reproductive responses to nutritional stress in adult female collared peccaries Journal of Wildlife Management. 50: 295-300. DOI: 10.2307/3801916  0.72
1986 Lochmiller RL, Hellgren EC, Varner LW, Grant WE. Serum and urine biochemical indicators of nutritional status in adult female collared peccaries, Tayassu tajacu (tayassuidae) Comparative Biochemistry and Physiology -- Part a: Physiology. 83: 477-488. DOI: 10.1016/0300-9629(86)90132-5  0.72
1985 Hellgren EC, Lochmiller RL, Amoss MS, Grant WE. Serum progesterone, estradiol-17 beta, and glucocorticoids in the collared peccary during gestation and lactation as influenced by dietary protein and energy. General and Comparative Endocrinology. 59: 358-68. PMID 4043721 DOI: 10.1016/0016-6480(85)90392-2  0.72
1985 Lochmiller RL, Hellgren EC, Hannon PG, Grant WE, Robinson RM. Coccidioidomycosis (Coccidioides immitis) in the collared peccary (Tayassu tajacu: Tayassuidae) in Texas. Journal of Wildlife Diseases. 21: 305-9. PMID 4032630 DOI: 10.7589/0090-3558-21.3.305  0.72
1985 Lochmiller RL, Hellgren EC, Grant WE. Relationships between internal morphology and body mass in the developing, nursling collared peccary, Tayassu tajacu (Tayassuidae). Growth. 49: 154-66. PMID 4007576  0.72
1985 Hellgren EC, Lochmiller RL, Amoss MS, Grant WE. Endocrine and metabolic responses of the collared peccary (Tayassu tajacu) to immobilization with ketamine hydrochloride. Journal of Wildlife Diseases. 21: 417-25. PMID 3001372 DOI: 10.7589/0090-3558-21.4.417  0.72
1985 Lochmiller RL, Hellgren EC, Varner LW, Greene LW, Amoss MS, Seager SW, Grant WE. Physiological responses of the adult male collared peccary, Tayassu tajacu (Tayassuidae), to severe dietary restriction. Comparative Biochemistry and Physiology. a, Comparative Physiology. 82: 49-58. PMID 2864211 DOI: 10.1016/0300-9629(85)90703-0  0.72
1985 Hellgren EC, Lochmiller RL, Grant WE. Pregnancy diagnosis in the collared peccary by ultrasonic amplitude-depth analysis Journal of Wildlife Management. 49: 71-73. DOI: 10.2307/3801846  0.72
1984 Lochmiller RL, Hellgren EC, Robinson RM, Grant WE. Techniques for collecting blood from collared peccaries, Dicotyles tajacu (L.). Journal of Wildlife Diseases. 20: 47-50. PMID 6716561 DOI: 10.7589/0090-3558-20.1.47  0.72
1984 Hellgren EC, Lochmiller RL, Thomas MW, Grant WE. Cyclopia, congenital limb deformity, and osteomyelitis in the collared peccary, Tayassu tajacu (L.). Journal of Wildlife Diseases. 20: 354-7. PMID 6530730 DOI: 10.7589/0090-3558-20.4.354  0.72
1984 Lochmiller RL, Hellgren EC, Varner LW, Grant WE. An electrophoretic characterization of serum proteins of the collared peccary (Tayassu tajacu). Comparative Biochemistry and Physiology. B, Comparative Biochemistry. 79: 569-75. PMID 6518761 DOI: 10.1016/0305-0491(84)90368-7  0.72
1984 Hellgren EC, Lochmiller RL, Grant WE. Demographic, morphologic and reproductive status of a herd of collared peccaries ( Tayassu tajacu) in South Texas American Midland Naturalist. 112: 402-407. DOI: 10.2307/2425446  0.72
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