Rare and Endangered Wildlife Problems and Solutions
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San Joaquin Kit Fox Habitat Use in Urban Bakersfield
SAN JOAQUIN KIT FOX HOME RANGE, HABITAT USE, AND MOVEMENTS IN URBAN BAKERSFIELD by Nancy Frost A Thesis Presented to The Faculty of Humboldt State University In Partial Fulfillment Of the Requirements for the Degree Master of Science In Natural Resources: Wildlife December 2005 ABSTRACT San Joaquin kit fox home range, habitat use, and movements in urban Bakersfield Nancy Frost Habitat destruction and fragmentation has led to the decline of the federally endangered and state threatened San Joaquin kit fox (Vulpes macrotis mutica). Kit foxes in the San Joaquin Valley occur in and adjacent to several urban areas. The urban kit fox population in Bakersfield has the potential to contribute to recovery efforts, however, little is known about habitat use in the urban environment. Habitat use in the urban landscape was examined in 28 radiocollared adult kit foxes between 1 May 1997 and 15 January 1998. The area of the urban environment needed to meet kit foxes’ ecological requirements varied among the sexes and fluctuated throughout the year. Mean home range size was 1.72 km2 (100% minimum convex polygon estimate) and mean concentrated use area (core area; 50% fixed kernel estimate) size was 0.16 km2. Females had a greater median number of core areas than did males, but core area size did not differ between the sexes. Mean home range size was significantly larger during the dispersal season than during the pair formation and breeding seasons. Home range size was greater for males than females during the breeding season. To assess the extent to which kit foxes were concentrated around limited resources, the percentage of overlap between adjacent kit foxes’ home ranges and core areas was determined. -
Reintroducing San Joaquin Kit Fox to Vacant Or Restored Lands: Identifying Optimal Source Populations and Candidate Foxes
REINTRODUCING SAN JOAQUIN KIT FOX TO VACANT OR RESTORED LANDS: IDENTIFYING OPTIMAL SOURCE POPULATIONS AND CANDIDATE FOXES PREPARED FOR THE U.S. BUREAU OF RECLAMATION CENTRAL VALLEY PROJECT CONSERVATION PROGRAM 2800 COTTAGE WAY, SACRAMENTO, CA 95825 Prepared by: Samantha Bremner-Harrison1 & Brian L. Cypher California State University, Stanislaus Endangered Species Recovery Program P.O. Box 9622 Bakersfield, CA 93389 1Current address: School of Animal, Rural and Environmental Sciences Nottingham Trent University, Brackenhurst Campus Southwell NG25 0QF 2011 Kit fox relocation report_ESRP.doc REINTRODUCING SAN JOAQUIN KIT FOX TO VACANT OR RESTORED LANDS: IDENTIFYING OPTIMAL SOURCE POPULATIONS AND CANDIDATE FOXES TABLE OF CONTENTS Table of Contents ............................................................................................................... i Introduction ....................................................................................................................... 6 Behavioral variation and suitability ........................................................................................................... 6 Objectives .................................................................................................................................................. 8 Methods .............................................................................................................................. 9 Study sites ................................................................................................................................................. -
Extinction Rates in North American Freshwater Fishes, 1900–2010 Author(S): Noel M
Extinction Rates in North American Freshwater Fishes, 1900–2010 Author(s): Noel M. Burkhead Source: BioScience, 62(9):798-808. 2012. Published By: American Institute of Biological Sciences URL: http://www.bioone.org/doi/full/10.1525/bio.2012.62.9.5 BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder. BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research. Articles Extinction Rates in North American Freshwater Fishes, 1900–2010 NOEL M. BURKHEAD Widespread evidence shows that the modern rates of extinction in many plants and animals exceed background rates in the fossil record. In the present article, I investigate this issue with regard to North American freshwater fishes. From 1898 to 2006, 57 taxa became extinct, and three distinct populations were extirpated from the continent. Since 1989, the numbers of extinct North American fishes have increased by 25%. From the end of the nineteenth century to the present, modern extinctions varied by decade but significantly increased after 1950 (post-1950s mean = 7.5 extinct taxa per decade). -
San Joaquin Kit Fox (Vulpes Macrotus Mutica)
Mammals San Joaquin Kit Fox (Vulpes macrotus mutica) San Joaquin Kit Fox (Vulpes macrotus mutica) Status State: Threatened Federal: Endangered Population Trend Global: Declining State: Declining Within Inventory Area: Unknown Data Characterization The location database for the San Joaquin kit fox (Vulpes macrotus mutica) within its known range in California includes 22 data records from 1975 to 1999. Of these records, none of the 7 documented within the past 10 years were of sufficient precision to be accurately located within the survey areas. Three of these 7 records are located within the ECCC HCP/NCCP inventory area. These records represent sighting within non-native grassland, grazed, and agricultural habitat. This database includes records of individual sightings and locations of occupied, vacant, and natal dens. A moderate amount of literature is available for the San Joaquin kit fox because of its endangered status. Long-term studies have been conducted on the ecology and population dynamics of this species in core population centers at the Elk Hills and Buena Vista Naval Petroleum Reserves in Kern County and on the Carrizo Plain Natural Area in San Luis Obispo County. Numerous surveys have been conducted in the northern portion of the range, including Contra Costa County. Quantitative data are available on population size, reproductive capacity, mortality, dispersal, home-range movement patterns, and habitat characteristics and requirements. A number of models have been developed to describe the species’ population dynamics. A recovery plan for the San Joaquin kit fox has been published. Range The San Joaquin kit fox is found only in the Central Valley area of California. -
Feasibility and Strategies for Translocating San Joaquin Kit Foxes to Vacant Or Restored Habitats
FEASIBILITY AND STRATEGIES FOR TRANSLOCATING SAN JOAQUIN KIT FOXES TO VACANT OR RESTORED HABITATS PREPARED FOR THE CENTRAL VALLEY PROJECT CONSERVATION PROGRAM U.S. BUREAU OF RECLAMATION AND U.S. FISH AND WILDLIFE SERVICE SACRAMENTO, CA 95825 Prepared by: Samantha Bremner-Harrison and Brian L. Cypher California State University, Stanislaus Endangered Species Recovery Program 1900 N. Gateway #101 Fresno, CA 93727 November 2007 FEASIBILITY AND STRATEGIES FOR REINTRODUCING SAN JOAQUIN KIT FOXES TO VACANT OR RESTORED HABITATS Samantha Bremner-Harrison and Brian L. Cypher California State University, Stanislaus Endangered Species Recovery Program TABLE OF CONTENTS Table of Contents ...............................................................................................................i 1. Introduction................................................................................................................... 1 2. Literature review of animal reintroductions and translocations ............................. 2 2.1. Introduction and definitions ............................................................................................. 2 2.2. Common issues associated with reintroduction programs............................................. 3 2.2.1. Expense....................................................................................................................................... 3 2.2.2. Available habitat ........................................................................................................................ -
Endangered Species Facts San Joaquin Kit
Endangered SpecU.S. Environmental iesFacts Protection Agency San Joaquin Kit Fox Vulpes macrot is mutica Description and Ecology Status Endangered, listed March 11, 1967. Critical Habitat Not designated. current distribution records include the Antioch area of Contra Costa County. Appearance The average male San Joaquin kit fox measures about 32 inches in length (of which 12 inches is the Habitat Because the San Joaquin kit fox requires dens length of its tail). It stands 12 inches high at the shoulder, for shelter, protection and reproduction, a habitat’s soil and weighs about 5 pounds. The female is a little smaller. type is important. Loose-textured soils are preferable, but The San Joaquin kit fox is the smallest canid species in North modification of the burrows of other animals facilitates America (but the largest kit fox subspecies). Its foot pads denning in other soil types. The historical native vegetation of are also small and distinct from other canids in its range, the Valley was largely annual grassland (“California Prairie”) averaging 1.2 inches long and 1 inch wide. The legs are long, and various scrub and subshrub communities. Vernal pool, the body slim, and the large ears are set close together. The alkali meadows and playas still provide support habitat, but B. Moose Pet erson, U.S. Fish Serviceand Wildlife B. Moose Pet nose is slim and pointed. The tail, typically carried low and have wet soils unsuitable for denning. Some of the habitat has been converted to an agricultural patchwork of row The San Joaquin kit fox is straight, tapers slightly toward its distinct black tip. -
Desert Kit Fox CESA Petition 3-10-13
BEFORE THE CALIFORNIA FISH AND GAME COMMISSION A Petition to List the Desert Kit Fox (Vulpes macrotis arsipus) as Threatened under the California Endangered Species Act Photo © CDFG 2012 CENTER FOR BIOLOGICAL DIVERSITY, PETITIONER March 10, 2013 Citation: Kadaba, Dipika, Ileene Anderson, Curt Bradley and Shaye Wolf 2013. A Petition to List the Desert Kit Fox (Vulpes macrotis arsipus) as Threatened under the California Endangered Species Act. Submitted to the California Department of Fish and Wildlife – March 2013. Pgs. 58. Table of Contents Executive Summary..............................................................................................................................4 I. Population Trends.......................................................................................................................5 II. Range and Distribution ...............................................................................................................5 III. Abundance ...................................................................................................................................8 IV. Life History..................................................................................................................................8 A. Species Description ...................................................................................................................8 B. Taxonomy...................................................................................................................................9 C. Reproduction -
Os Nomes Galegos Dos Carnívoros 2019 2ª Ed
Os nomes galegos dos carnívoros 2019 2ª ed. Citación recomendada / Recommended citation: A Chave (20192): Os nomes galegos dos carnívoros. Xinzo de Limia (Ourense): A Chave. https://www.achave.ga"/wp#content/up"oads/achave_osnomes!a"egosdos$carnivoros$2019.pd% Fotografía: lince euroasiático (Lynx lynx ). Autor: Jordi Bas. &sta o'ra est( su)eita a unha licenza Creative Commons de uso a'erto* con reco+ecemento da autor,a e sen o'ra derivada nin usos comerciais. -esumo da licenza: https://creativecommons.or!/"icences/'.#n #nd//.0/deed.!". Licenza comp"eta: https://creativecommons.or!/"icences/'.#n #nd//.0/"e!a"code0"an!ua!es. 1 Notas introdutorias O que cont n este documento Neste documento fornécense denominacións galegas para diferentes especies de mamíferos carnívoros. Primeira edición (2018): En total! ac"éganse nomes para 2#$ especies! %&ue son practicamente todos os carnívoros &ue "ai no mundo! salvante os nomes das focas% e $0 subespecies. Os nomes galegos das focas expóñense noutro recurso léxico da +"ave dedicado só aos nomes das focas! manatís e dugongos. ,egunda edición (201-): +orríxese algunha gralla! reescrí'ense as notas introdutorias e incorpórase o logo da +"ave ao deseño do documento. A estrutura En primeiro lugar preséntase a clasificación taxonómica das familias de mamíferos carnívoros! onde se apunta! de maneira xeral! os nomes dos carnívoros &ue "ai en cada familia. seguir vén o corpo do documento! unha listaxe onde se indica! especie por especie, alén do nome científico! os nomes galegos e ingleses dos diferentes mamíferos carnívoros (nalgún caso! tamén, o nome xenérico para un grupo deles ou o nome particular dalgunhas subespecies). -
Competitive Interactions Between Coyotes and San Joaquin Kit Foxes
COMPETITIVE INTERACTIONS BETWEEN COYOTES AND SAN JOAQUIN KIT FOXES BRIAN L. CYPHER AND KENNETH A. SPENCER Enterprise Advisory Services, Inc., P.O. Box 178, Tupman, CA 93276 Present address of KAS: Colorado State University, Center for Ecological Management of Military Lands, Fort Hunter Liggett, CA 93928 Downloaded from https://academic.oup.com/jmammal/article/79/1/204/841958 by guest on 30 September 2021 Competitive interactions between coyotes (Canis latrans) and federally endangered San Joaquin kit foxes (Vuipes macrotis mutica) were investigated at the Naval Petroleum Re serves in California (NPRC) during 1984-1995. Coyotes and kit foxes used similar food items, indicating the potential for exploitative competition. Leporids were the primary prey for coyotes in all years, but small rodents were the primary prey for kit foxes in most years, although leporids were primary prey in other years. Coyotes were the main cause of mortality to kit foxes at NPRC, indicating that interference competition may be occur ring. Population trends of kit foxes appeared to be strongly i!1.fluenced by food availability, but competition from coyotes also may have affected population dynamics of kit foxes. Mechanisms employed by kit foxes, such as resource partitioning, greater dietary breadth, and year-round den use, may facilitate coexistence with coyotes. However, use of anthro pogenic food sources by coyotes may intensify competitive interactions during periods of low prey availability. Key words: Vulpes macrotis mutica, kit fox, Canis tatrans, coyote, endangered species, competition, California The San Joaquin kit fox (Vuipes macrotis tition. Coyotes also have been identified as mutica) is a federally endangered and Cal an important source of kit fox mortality ifornia tlueatened species occurring in the (Cypher and Scrivner, 1992; Disney and southern San Joaquin Valley and adjacent Spiegel, 1992; Ralls and White, 1995), and Salinas, Valley in California. -
Quantity and Distribution of Suitable Habitat for Endangered San Joaquin Kit Foxes: Conservation Implications
Copyright © 2013 by the IUCN/SSC Canid Specialist Group. ISSN 1478-2677 Research Report Quantity and distribution of suitable habitat for endangered San Joaquin kit foxes: conservation implications Brian L. Cypher*1, Scott E. Phillips1 and Patrick A. Kelly1 1 California State University - Stanislaus, Endangered Species Recovery Program, Department of Biological Sciences, One University Circle, Turlock, California 95382, USA. * = Correspondence author. Email: [email protected] Keywords: California, endangered species, habitat modelling, habitat suitability, San Joaquin kit fox, Vulpes macrotis mutica. Abstract The San Joaquin kit fox Vulpes macrotis mutica is endemic to central California, and is listed as Federally Endangered and California Threatened, primarily due to profound habitat loss. This loss continues and habitat protection is urgently needed to conserve and recover this species. To identify lands to target for habitat protection, we used a GIS-based map-algebra model to determine the distribution of remaining suitable habitat for San Joaquin kit foxes. The primary variables used in the model included land use/land cover, vegetation density and terrain ruggedness. Suitability was categorized as high, medium or low based on habitat attributes relative to the presence and persistence of kit fox populations. Model results indicated that only 4,267km2 of high suitability habitat and 5,569km2 of medium suitability habitat remain for San Joaquin kit foxes, and much of this habitat is highly fragmented. High suitability habitat primarily is concentrated in the southern portion of the kit fox range with some also scattered along the western edge. Persistent kit fox populations appear to occur only in areas with relatively large patches of high suitability habitat or a mix of high and medium suitability habitat. -
Extinction Rates in North American Freshwater Fishes, 19002010
Extinction Rates in North American Freshwater Fishes, 1900–2010 Author(s): Noel M. Burkhead Reviewed work(s): Source: BioScience, Vol. 62, No. 9 (September 2012), pp. 798-808 Published by: University of California Press on behalf of the American Institute of Biological Sciences Stable URL: http://www.jstor.org/stable/10.1525/bio.2012.62.9.5 . Accessed: 21/09/2012 12:59 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. University of California Press and American Institute of Biological Sciences are collaborating with JSTOR to digitize, preserve and extend access to BioScience. http://www.jstor.org Articles Articles Extinction Rates in North American Freshwater Fishes, 1900–2010 NOEL M. BURKHEAD Widespread evidence shows that the modern rates of extinction in many plants and animals exceed background rates in the fossil record. In the present article, I investigate this issue with regard to North American freshwater fishes. From 1898 to 2006, 57 taxa became extinct, and three distinct populations were extirpated from the continent. Since 1989, the numbers of extinct North American fishes have increased by 25%. From the end of the nineteenth century to the present, modern extinctions varied by decade but significantly increased after 1950 (post-1950s mean = 7.5 extinct taxa per decade). -
"Medicated to the Cpftegetwatioll Ot Ladiettica's Tegeht Gideg"
"Medicated to the cPftegetwatioll ot LADiettica's Tegeht gideg" THE RARE AND ENDANGERED FISHES OF THE DEATH VALLEY SYSTEM A Summary of the Proceedings of the Second Annual Symposium Relating to Their Protection and Preservation By . Edwin P. Pieter California Department of Fish and Game Symposium Coordinator Held at Death Valley National Monument Headquarters Furnace Creek, California November 17.& 18, 1970 Produced by the Desert'FihesCauncil and CalifOrnia Department of Fish and Game. in Cooperation with the U. S. National Park Service. Submitted for publication October 8, 19710 Desert Fishes Council, 407 West Line Street, Bishop, California 93514 PREFACE "The naturalist looks upon every species of animal and plant now living as the individual letters which go to make up one of the volumes of our earth's his- tory; and, as a few lost letters may make a sentence unintelligible, so the extinction of the numerous forms of life which the progress of cultivation in- variably entails will necessarily render obscure this invaluable record of the past. It is therefore an important object to preserve them. If this is not done, future ages will certainly look back upon us as a people so immersed in the pursuit of wealth as to be blind to higher considerations. They will charge us with having culpably allowed the destruction of some of those records of creation which we had it in our power to preserve, and while professing to regard all living things as the direct handiwork and best evidence of a Creator, yet, with a strange inconsistency, seeing many of them perish irrecoverably from the earth, uncared for and unknown." A.