Katherine Ralls
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American zoologist
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Katherine Rallsbiology Degrees
Biology
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#1245
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Zoology
#110
World Rank
#328
Historical Rank
#40
USA Rank
Ecology
#321
World Rank
#361
Historical Rank
#131
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Biology
Katherine Ralls's Degrees
- Bachelors Biology University of California, Berkeley
- Masters Zoology Stanford University
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Why Is Katherine Ralls Influential?
(Suggest an Edit or Addition)According to Wikipedia, Katherine S. Ralls is an American zoologist and conservationist who is Senior Research Zoologist Emerita at the Smithsonian Conservation Biology Institute, National Zoological Park. Ralls' research interests are in the behavioral ecology, genetics, and conservation of mammals, both terrestrial and marine. Since 1980, she has focused on conservation biology, especially the genetic problems of small captive and wild populations.
Katherine Ralls's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Estimates of Lethal Equivalents and the Cost of Inbreeding in Mammals (1988) (710)
- Predicting the Probability of Outbreeding Depression (2011) (663)
- Mammals in Which Females are Larger Than Males (1976) (640)
- Sexual Dimorphism in Mammals: Avian Models and Unanswered Questions (1977) (530)
- Mammalian Scent Marking (1971) (501)
- Inbreeding and juvenile mortality in small populations of ungulates (1979) (381)
- Elephant seal genetic variation and the use of simulation models to investigate historical population bottlenecks. (1993) (283)
- Using stable isotopes to investigate individual diet specialization in California sea otters (Enhydra lutris nereis). (2009) (283)
- The role of top carnivores in regulating terrestrial ecosystems (1999) (275)
- Call for a Paradigm Shift in the Genetic Management of Fragmented Populations (2018) (262)
- Implications of different species concepts for conserving biodiversity (2012) (260)
- A Practical Guide for Genetic Management of Fragmented Animal and Plant Populations (2017) (245)
- Conservation biology: Inbreeding leads to extinction (1998) (192)
- Vocalizations and vocal mimicry in captive harbor seals, Phoca vitulina (1985) (183)
- Detection and accuracy rates of dogs trained to find scats of San Joaquin kit foxes (Vulpes macrotis mutica) (2003) (180)
- Geographic variation in size and sexual dimorphism of North American weasels (1985) (167)
- Predation on San Joaquin Kit Foxes by Larger Canids (1995) (167)
- A noninvasive method for distinguishing among canid species: amplification and enzyme restriction of DNA from dung (1997) (145)
- Biological and technical considerations of carnivore translocation: a review (1999) (144)
- Auditory sensitivity in mice, Peromyscus and Mus musculus. (1967) (139)
- Captive breeding programs for populations with a small number of founders. (1986) (129)
- Saving the Vaquita: Immediate Action, Not More Data (2007) (125)
- Taking Complexity Seriously: Policy Analysis, Triangulation and Sustainable Development (1997) (120)
- Genetic management of chondrodystrophy in California condors (2000) (101)
- GENETIC STATUS AND MANAGEMENT OF CALIFORNIA CONDORS (2004) (101)
- Stable isotopes evaluate exploitation of anthropogenic foods by the endangered San Joaquin kit fox (Vulpes macrotis mutica) (2010) (99)
- Reproduction and spacing patterns of kit foxes relative to changing prey availability (1993) (91)
- Genetic rescue: A critique of the evidence supports maximizing genetic diversity rather than minimizing the introduction of putatively harmful genetic variation (2020) (88)
- Genetic Ecology of Whales and Dolphins (1992) (88)
- Mother-young relationships in captive ungulates: variability and clustering (1986) (85)
- GENETIC SUBDIVISIONS AMONG SMALL CANIDS: MITOCHONDRIAL DNA DIFFERENTIATION OF SWIFT, KIT, AND ARCTIC FOXES (1993) (83)
- Variation in δ13C and δ15N diet–vibrissae trophic discrimination factors in a wild population of California sea otters (2010) (82)
- Canine Assistants for Conservationists (2001) (78)
- Bycatch in gillnet fisheries threatens Critically Endangered small cetaceans and other aquatic megafauna (2019) (76)
- Deleterious effects of inbreeding in a herd of captive Dorcas gazelle Gazella dorcas (1980) (75)
- Incorporating ecological drivers and uncertainty into a demographic population viability analysis for the island fox (2009) (73)
- Choosing a Management Strategy: Two Structured Decision‐Making Methods for Evaluating the Predictions of Stochastic Simulation Models (1995) (72)
- Reproduction, survival and tag loss in California sea otters (1991) (70)
- Coyote – kit fox interactions as revealed by telemetry (1994) (68)
- Assessment of scat-detection dog surveys to determine kit fox distribution (2005) (67)
- Causes of mortality in California sea otters during periods of population growth and decline (2003) (67)
- Assessing reliability of microsatellite genotypes from kit fox faecal samples using genetic and GIS analyses (2006) (66)
- Effect of inbreeding on juvenile mortality in some small mammal species (1982) (61)
- Optimizing Habitat Protection Using Demographic Models of Population Viability (2002) (59)
- Functional and Numerical Responses of Kit Foxes to a Short-Term Decline in Mammalian Prey (1996) (59)
- Mitochondrial Genomes Suggest Rapid Evolution of Dwarf California Channel Islands Foxes (Urocyon littoralis) (2015) (58)
- A trade‐off between precopulatory and postcopulatory trait investment in male cetaceans (2015) (57)
- KINSHIP, SOCIAL RELATIONSHIPS, AND DEN SHARING IN KIT FOXES (2001) (56)
- Corridors: Reconnecting fragmented landscapes (1999) (55)
- Inbreeding and juvenile mortality in small populations of ungulates. (1982) (55)
- Inbreeding: Do animals avoid incest? (1986) (54)
- Overlap in habitat and food use between coyotes and San Joaquin kit foxes. (1995) (53)
- Ecological Change on California's Channel Islands from the Pleistocene to the Anthropocene (2014) (51)
- Time Budgets and Activity Patterns in California Sea Otters (1990) (51)
- Preface to the proceedings of the workshop on genetic management of captive populations (1986) (51)
- Movement and spatial use patterns of California sea otters (1996) (50)
- Assessment of Abundance of San Joaquin Kit Foxes by Spotlight Surveys (1997) (48)
- Developing a Criterion for Delisting the Southern Sea Otter under the U.S. Endangered Species Act (1996) (46)
- Behavior of melon-headed whales, Peponocephala electra, near oceanic islands (2009) (43)
- POPULATION STRUCTURE OF DIPODOMYS INGENS (HETEROMYIDAE): THE ROLE OF SPATIAL HETEROGENEITY IN MAINTAINING GENETIC DIVERSITY (1997) (42)
- Conservation and Genetics (2018) (40)
- Ecological drivers of variation in tool-use frequency across sea otter populations (2015) (39)
- Designing Species Translocation Strategies When Population Growth and Future Funding Are Uncertain (2000) (38)
- AN INTRAPERITONEAL RADIO TRANSMITTER FOR SEA OTTERS (1989) (38)
- Foraging patterns of California sea otters as indicated by telemetry (1995) (38)
- The Plight of the 'Forgotten' Whales (1989) (36)
- Genetic diversity in California sea otters: Theoretical considerations and management implications (1983) (35)
- Latrine use by San Joaquin kit foxes ( Vulpes macrotis mutica ) and coyotes ( Canis latrans ) (2004) (35)
- Testing Decision Rules for Categorizing Species’ Extinction Risk to Help Develop Quantitative Listing Criteria for the U.S. Endangered Species Act (2013) (35)
- Optimizing reserve expansion for disjunct populations of San Joaquin kit fox (2004) (34)
- "Mobbing" in Hawaiian monk seals (Monachus schauinslani) : the value of simulation modeling in the absence of apparently crucial data (1995) (32)
- Population structure and genetic variation in the endangered Giant Kangaroo Rat (Dipodomys ingens) (2006) (31)
- A reliable, non-invasive method for sex determination in the endangered San Joaquin kit fox (Vulpes macrotis mutica) and other canids (2004) (31)
- How Viable Is Population Viability Analysis (1997) (30)
- U.S. Pacific Marine Mammal Stock Assessments: 2009 (2013) (30)
- Behavior of captive mouse deer, Tragulus napu. (2010) (29)
- But Is It Science? (1995) (29)
- MOVEMENTS OF SEA OTTERS RELOCATED ALONG THE CALIFORNIA COAST (1992) (28)
- Social Monogamy in Kit Foxes: Formation, Association, Duration, and Dissolution of Mated Pairs (2007) (28)
- U.S. Pacific Marine Mammal Stock Assessments, 2011 (2013) (27)
- A reliable, non-invasive method for sex determination in the endangered San Joaquin kit fox (Vulpes macrotis mutica) and other canids (2004) (26)
- Comparative ecology and conservation priorities of swift and kit foxes (2004) (26)
- NOCTURNAL ENCOUNTERS BETWEEN KIT FOXES (2000) (25)
- Captive Breeding and Reintroduction (2001) (25)
- Gene flow among San Joaquin kit fox populations in a severely changed ecosystem (2004) (24)
- Tracking the origins and diet of an endemic island canid (Urocyon littoralis) across 7300 years of human cultural and environmental change (2016) (24)
- RELATIVE ABUNDANCE OF ENDANGERED SAN JOAQUIN KIT FOXES (VULPES MACROTIS MUTICA) BASED ON SCAT–DETECTION DOG SURVEYS (2006) (24)
- Changes in Kit Fox Defecation Patterns During the Reproductive Season: Implications for Noninvasive Surveys (2010) (22)
- Better Policy and Management Decisions through explicit Analysis of Uncertainty: New Approaches from Marine Conservation (2000) (22)
- An efficient noninvasive method for discriminating among faeces of sympatric North American canids (2010) (20)
- Hunting cetaceans with sound: a worldwide review (2023) (19)
- AGONISTIC BEHAVIOR IN MAXWELL’S DUIKER, CEPHALOPHUS MAXWELLI (1975) (17)
- DRAFT U.S. PACIFIC MARINE MAMMAL STOCK ASSESSMENTS: 2011 (2009) (17)
- Measures of effective population size in sea otters reveal special considerations for wide‐ranging species (2018) (16)
- Developing a Structure for Quantitative Listing Criteria for the U.S. Endangered Species ACT Using Performance Testing: Phase 1 Report (2013) (15)
- Food abundance, prey morphology, and diet specialization influence individual sea otter tool use (2017) (15)
- Behavior and reproduction of captive brow-antlered deer, Cervus eldi thamin Thomas, 1918 (1979) (15)
- Breeding like flies (1993) (15)
- Connectivity: Maintaining Flows in Fragmented Landscapes (1999) (15)
- Managing genetic diversity in captive breeding and reintroduction programs (1992) (15)
- Scientific standards for conducting viability assessments under the Nathional Forest Management Act: report and recoomendations of the NCRAS Working Group (2001) (14)
- Mother-young relationships in captive ungulates: Spatial and temporal patterns (1987) (14)
- Swift and kit foxes (2004) (13)
- Social relationships and reproductive behavior of island foxes inferred from proximity logger data (2013) (13)
- Prospects for captive breeding of poorly known small cetacean species (2013) (13)
- Non-invasive baseline genetic monitoring of the endangered San Joaquin kit fox on a photovoltaic solar facility (2015) (13)
- Mother-young relationships in captive ungulates: behavioral changes over time (2010) (13)
- Predation on endangered San Joaquin kit foxes by larger canids. (1995) (12)
- Population status of California sea otters (1988) (12)
- Research on Threatened Populations (1992) (11)
- Status of dugongs in waters around Palau (1988) (10)
- Variation in delta13C and delta15N diet-vibrissae trophic discrimination factors in a wild population of California sea otters. (2010) (10)
- Variation in δ 13 C and δ 15 N diet-vibrissae trophic discrimination factors in a wild population of California sea otters ( Enhydra lutris nereis ) (2010) (10)
- Social Interactions among San Joaquin Kit Foxes Before, During, and After the Mating Season (2008) (9)
- Wild sea otter mussel pounding leaves archaeological traces (2019) (8)
- Sea Otters and Oil: Ecological Perspectives (1990) (8)
- Mobbing in Hawaiian monk seals: The value of simulation modeling in the absence of apparently crucial data. (1995) (8)
- Whole genome sequencing of California condors is now utilized for guiding genetic management (2016) (7)
- Extremes of sexual dimorphism in size in birds (1976) (7)
- Primate ecology: studies of feeding and ranging behaviour in lemurs, monkeys, and apes. Edited by T. H. Clutton-Brock. London New York: Academic Press, 1977. (1978) (7)
- Evaluation of New Telemetry Technologies for Research on Island Foxes (2014) (7)
- Ecology and Behavior of the Black Rhinoceros (Diceros bicornis L.): A Field Study (1970) (6)
- Species concepts for conservation - reply to Russello and Amato (2014) (6)
- DIURNAL SPACING PATTERNS IN KIT FOXES, A MONOGAMOUS CANID (2003) (6)
- Sea Otter Conservation Genetics (2015) (6)
- Distribution, fine-scale subdivision, and population size of San Joaquin kit foxes in the Ciervo-Panoche Natural Area, California (2019) (5)
- Home-range size and habitat selection by male Island Foxes (Urocyon littoralis) in a Low-Density Population (2015) (5)
- Variability of behavioural data recorded by volunteer observers (1982) (5)
- Correcting parentage relationships in the endangered California Condor: Improving mean kinship estimates for conservation management (2021) (5)
- Barking Vocalizations in San Joaquin Kit Foxes (Vulpes macrotis mutica) (2008) (4)
- Scent marking in the red brocket, Mazama americana (1973) (4)
- TWO OBSERVATIONS OF TREE CLIMBING BY THE SAN JOAQUIN KIT FOX (2004) (4)
- Viable populations for conservation: edited by Michael E. Soulé, Cambridge University Press, 1987. £25/$44.50 hbk, £9.95/$16.95 pbk (xii + 189 pages) ISBN 0 521 33390 (hbk), 0 521 33657 (pbk) (1988) (4)
- Being female : reproduction power and change (ed. by Dana Raphael The Hague: Mouton, 1975) (1976) (4)
- OBSERVATIONS OF SOCIAL POLYGYNY, ALLONURSING, EXTRAPAIR COPULATION, AND INBREEDING IN URBAN SAN JOAQUIN KIT FOXES (VULPES MACROTIS MUTICA) (2019) (4)
- Protected Species – Research Permits and the Value of Basic Research (1989) (4)
- Developing a delisting criterion for the southern sea otter under the U.S. Endangered Species Act (1996) (3)
- An efficient method for simultaneous species, individual, and sex identification via in‐solution single nucleotide polymorphism capture from low‐quality scat samples (2021) (3)
- Conservation genetics. Breeding like flies. (1993) (3)
- Supporting California condor conservation management through analysis of species-wide whole genome sequence variation (2014) (3)
- Mitogenomes and relatedness do not predict frequency of tool-use by sea otters (2017) (3)
- Sperm competition in grey whales (1988) (3)
- Inbreeding and Outbreeding (2013) (3)
- Fourteen tail feathers: An autosomal recessive trait in california condors (Gymnogyps californianus). (2017) (2)
- Sexual Dimorphism (2009) (2)
- Use of Night Vision Technology to Study Kit Fox Behavior (2002) (2)
- An efficient noninvasive method for simultaneous species, individual, and sex identification of sympatric Mojave Desert canids via in-solution SNP capture (2021) (2)
- Translocations maintain genetic diversity and increase connectivity in sea otters, Enhydra lutris (2021) (2)
- Population fragmentation causes inadequate gene flow and increases extinction risk (2019) (2)
- Population status of California sea otters / edited by D.B. Siniff and K. Ralls. (1988) (1)
- A Policy Analyst's Perspective@@@Taking Complexity Seriously: Policy Analysis, Triangulation and Sustainable Development (1998) (1)
- Mother-Young behaviour in ungulates (1985) (1)
- A Policy Analyst’s Perspective (1998) (1)
- Comment on Lowe's "Sociobiology and Sex Differences" (1980) (1)
- How Can We Conserve Mammals?@@@Priorities for the Conservation of Mammalian Diversity: Has the Panda had Its Day? (2001) (1)
- Improving genetic management of California Condors through molecular research (2005) (1)
- The Imperfect Art of Reintroduction (1992) (1)
- Raising Pups of Urban San Joaquin Kit Fox: Relative Roles of Adult Group Members (2019) (1)
- Supplementary material from "Mitogenomes and relatedness do not predict frequency of tool-use by sea otters" (2017) (1)
- Sidebar: Setting priorities for conserving endangered species (1995) (1)
- Efficacy of Three Methods for Collecting Behavioral Data on Urban San Joaquin Kit Foxes, Vulpes macrotis mutica (2016) (1)
- Inbreeding and loss of genetic diversity increase extinction risk (2019) (1)
- The Gerbil in Behavioral Investigations. Mechanisms of Territoriality and Olfactory Communication.Del Thiessen , Pauline Yahr (1978) (1)
- Evolutionary genetics of small populations (2019) (1)
- Introduction (2019) (0)
- Patterns of MHC Polymorphism in Endangered San Joaquin Kit Foxes Living in Urban and Non-urban Environments (2020) (0)
- Distribution, fine-scale subdivision, and population size of San Joaquin kit foxes in the Ciervo-Panoche Natural Area, California (2019) (0)
- Galen B. Rathbun (1944–2019) (2019) (0)
- Duplaix-Hall, N. (ed.). International Zoo Yearbook, Volume 14. Zoological Society of London, 456 pp., 1974. Price, $22.00 hardbound and $16.50 paperback (1976) (0)
- The Natural History of Otters. Paul Chanin (1986) (0)
- The imperfect art of reintroduction. Review of "Meant to be Wild: the Struggle to Save Endangered Species Through Captive Breeding" by J. DeBlieu and "Beyond Captive Breeding: Re-introducing Endangered Mammals to the Wild" edited by J. H. W. Gipps (1992) (0)
- Are there populations suffering genetic erosion that would benefit from gene flow? (2019) (0)
- Understanding disease in desert tortoise populations: A brief summary of knowledge and recommendations pertinent to conservation (2009) (0)
- Appropriate delineation of species for conservation purposes (2019) (0)
- Book Review:Chemical Signals: Vertebrates and Aquatic Invertebrates. Dietland Muller-Schwarze, Robert M. Silverstein (1981) (0)
- Book Review:The Natural History of Weasels & Stoats. Carolyn King (1990) (0)
- Book review of "Conservation for the Twenty-first Century" edited by D. Western and M. C. Pearl. (1990) (0)
- Effectof inbreeding onjuvenilemortalityin somesmallmammal species (1982) (0)
- Genetic rescue resulting from gene flow (2019) (0)
- Whale correction (1989) (0)
- Ecological variation among island foxes relative to reproductive events (2021) (0)
- Cetacean Mating Systems (2019) (0)
- Book Review:Horse Behavior. The Behavioral Traits and Adaptations of Domestic and Wild Horses, Including Ponies. George H. Waring (1983) (0)
- Walther, F. R. Communication and Expression in Hoofed Mammals. Indiana Univ. Press, Bloomington, xx + 423 pp., 1984. Price (hardbound), $32.50 (1985) (0)
- Global climate change increases the need for genetic management (2019) (0)
- Using stable isotopes to investigate individual diet specialization in California sea otters (Enhydra (2009) (0)
- In Search of Voice Empowerment in Female Athletes in Ethiopia: A Qualitative Study (2021) (0)
- Book Review:Social Stratification in Science. Jonathon R. Cole, Stephen Cole (1975) (0)
- How Can We Conserve Mammals (2001) (0)
- Wild sea otter mussel pounding leaves archaeological traces (2019) (0)
- Praire Night: Black-Footed Ferrets and the Recovery of Endangered Species.Brian Miller , Richard P. Reading , Steve Forrest (1997) (0)
- Managing gene flow among isolated population fragments (2019) (0)
- Biological impacts of translocated sea otters. Final report (1990) (0)
- Book Review:Primate Ecology: Studies of Feeding and Ranging Behaviour in Lemurs, Monkeys, and Apes. T. H. Clutton-Brock (1978) (0)
- Review of: [Book Review:] The Gerbil in Behavioral Investigations. Mechanisms of Territoriality and Olfactory Communication (1978) (0)
- Sex in Cetaceans (2019) (0)
- Book Review:The Biology and Management of an Extinct Species: Pere David's Deer. Benjamin B. Beck, Christen Wemmer (1984) (0)
- Cetacean Behavior Behavior of Marine Animals, Current Perspectives in Research, Volume 3: Cetaceans Howard E. Winn Bori L. Olla (1980) (0)
- Stones of silence By George B. Schaller. Chicago: University of Chicago Press (1988). Pp. xii + 292. Price $14.95 paperback (1989) (0)
- Bycatch ingillnet fisheries threatens CriticallyEndangeredsmallcetaceansand otheraquaticmegafauna (2019) (0)
- Walther, F. R., E. C. Mungall, and G. A. Grau. Gazelles and their relatives. A study in territorial behavior. Noyes Publications, Park Ridge, New Jersey, xiii + 239 pp., 1983. Price (cloth), $28.00 (1984) (0)
- Being Female.Dana Raphael (1976) (0)
- Foraging patterns of California sea otters based on radiotelemetry. (1995) (0)
- "The Natural History of Weasels and Stoats" by C. King (1990) (0)
- Book Review of "Chemical Signals: Vertebrates and Aquatic invertebrates" D. Muller-Schwarze and R. M. Silverstein (1981) (0)
- Author ' s personal copy En Inbreeding and Outbreeding (2012) (0)
- Ewer, R. F. Ethology of Mammals. Plenum Press, New York, xiv + 418 pp., 12 figs., 8 pls., 1968. Price, $25.00 (1969) (0)
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