DOCSLIB.ORG

April 1987 Vol

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
April 1987 Vol April 1987 Vol. XII No. 4 Department of interior. U.S. Fish and Wildlife Service Technical Bulletin Endangered Species Program, Washington, D.C. 20240 Texas Fish, Considered Extinct, is Proposed for Delisting The Amistad gambusia {Gambusia members of a distinct species until well af- and at Dexter National Fish Hatchery in amistadensis), a small fish known from a ter construction of Amistad Dam, a U.S. New Mexico. Since that time, all captive single spring in Val Verde County, Texas, Army Corps of Engineers project, had be- populations have died or have been elimi- is widely considered to be extinct. Accord- gun. The impoundment put the spring un- nated through hybridization with, and pre- ingly, the Fish and Wildlife Service (FWS) der more than 70 feet (21 meters) of silty dation by, the mosquitofish (Gambusia af- recently proposed to remove it from the list water, changed water temperatures, and finus). of Endangered and Threatened wildlife eliminated the shoreline aquatic vegeta- (F.R. 3/11/87). tion inhabited by the gambusia from the The original description of G. spring area. By 1973, when the species Comments on the proposal to remove amistadensis was based on specimens was formally described, it was already ex- the Amistad gambusia from its Endan- collected in 1968 from Goodenough tinct in its native habitat. G. amistadensis gered classification are welcome, and Spring, a tributary of the Rio Grande, just was listed as an Endangered species in should be sent to the Regional Director, prior to its inundation by the rising Amistad 1980, at which time it occurred only in cap- Region 2 (address on page 2 of this BUL- Reservoir. They were not recognized as tivity at the University of Texas in Austin LETIN), by May 11, 1987. National Marine Fisheries Service Proposes Shrimp Fishing Industry Use of Turtle Excluder Devices Gloria Thompson Office of Protected Species and Habitat Conservation National Marine Fisheries Service In the March 2, 1987, Federal Register, All five species of sea turtles (log- network in 1979 to patrol coastal U.S. the National Marine Fisheries Service gerhead, Kemp's ridley, green, leather- beaches and report on strandings. From (NMFS) of the U.S. Department of Com- back, and hawksbill) found in marine wa- January 1980 through December 1986, merce proposed rules that would require ters off the southeastern U.S. and the Gulf 8,317 marine turtles (excluding those from shrimp trawlers in the Gulf of Mexico and of Mexico are protected by the ESA. the NMFS "headstart" program) were re- in the Atlantic Ocean off the coast of the (NMFS has legal authority over sea turtles ported as stranded. southeastern United States to use ap- in the water and the Fish and Wildlife Serv- Often it is impossible to determine the proved gear in specified locations and at ice has authority when they are on land.) cause of death of a stranded turtle. Not all specified times in order to reduce inciden- One threat facing these species is that of the sea turtles that strand can be at- tal captures of Endangered and Threat- many are caught in shrimp trawls. Based tributed to shrimp trawling; however, there ened sea turtles in shrimp trawls. on observer data, NMFS estimates that often is a correlation between the level of These proposed rules had been jointly annually 47,973 are incidentally caught, strandings and major shrimping efforts. recommended to NMFS by representa- and that 11,179 of them die. An estimated This correlation has been documented by tives of affected shrimpers and several en- 767 Kemp's ridleys alone are killed each scientists and Sea Turtle Stranding and vironmental groups as offering the best year by the off-shore shrimp fleet in the Salvage Network personnel from South prospect for reducing incidental sea turtle southeastern U.S. This species is in the Carolina to Florida, as well as Louisiana drownings as near to zero as possible greatest peril of extinction; its nesting num- and Texas. Stranding reports tend to cor- while avoiding, to the greatest extent pos- bers have dwindled from an estimated roborate the data from direct capture ob- sible, adverse economic effects on the 40,000 in one day in 1947 to an annual es- servations, and together they indicate that shrimp fishing industry. They contain crite- timate of 572 in 1986 (due to a number of shhmp trawling is a significant source of ria and procedures for testing and approv- factors). sea turtle mortality. ing turtle excluder devices (TEDs), specify areas and seasons in which approved Stranding Data Gear Research TEDs must be used, extend current report- ing requirements, extend existing meas- Some sea turtles that die in U.S. waters In 1978, NMFS initiated a research pro- ures for resuscitation and release of cap- wash toward shore and are found stranded gram to develop gear that would reduce tured sea turtles, continue current in coastal areas. Because of the protected the mortality of sea turtles associated with designations of Critical Habitat, and state status of the species, a need to collect in- shrimp trawling. Other project goals were the Departmental enforcement policy with formation about the species, and interest to prevent significant shrimp loss and to respect to violations of the Endangered from the public, NMFS, in cooperation with minimize the economic impacts on Species Act (ESA) and these rules. the States, established a volunteer (continued on page 4) > ENDANGERED SPECIES TECHNICAL BULLETIN Vol. XII No. 4 (1987) action involves systematically drilling 700- foot test holes and setting off 50-pound charges of dynamite to determine a poten- tial for oil and gas reserves. It may affect three federally-listed Endangered species, the San Joaquin kit fox {Vulpes macrotis mutica), blunt- nosed leopard lizard {Gam- belia silus), and giant kangaroo rat (Di- podomys ingens). Chevron U.S.A. will conduct initial searches for occurrence of these species. Possible mitigation in- cludes avoidance of kit fox dens and giant kangaroo rat colony sites; use of a mini- mum 200-foot buffer to prevent burrow col- lapse from seismic explosion; implementa- tion of an employee training program; limiting vehicles to existing roads; re- habilitation of disturbed habitats; and con- Regional News struction of barriers, fences, and gates af- ter project actions to minimize future off- Endangered species program re- Species Office (SESO) met with repre- road vehicle use. gional staff members have reported the sentatives of the California Department of The Bureau of Land Management and following activities for the month of Fish and Game, Bureau of Land Manage- Department of Energy, as the Federal per- March: ment, and Chevron U.S.A. in February re- mitting agencies, will be consulting for- Region 1 — The Fish and Wildlife Serv- garding a proposed 27-square mile seis- mally with the FWS on this project. ice's (FWS) Sacramento Endangered mic exploration project. The proposed U.S. Fish and Wildlife Service Region 3, Federal BIdg., Fort Snelling, Twin Washington, D.C. 20240 Cities. MN 55111 (612-725-3500); Har- Sand City, California (Monterey vey Nelson, Regional Director. John S. County), has proposed to rezone and re- Frank Dunkle, Director Popowski, Assistant Regional Director: develop coastal and dune habitats that (202-343-4717) James M Enyel. Endangered Species may contain Endangered Smith's blue but- Ronald E. Lambertson Specialist. terflies {Euphilotes enoptes smithi). Assistant Director tor Fish Smith's blue butterflies have been col- and Wildlife Enhancement Region 4, Richard B. Russell Federal BIdg.. 75 Spring St.. S,W. Atlanta, GA 30303 lected from sand dune habitats in Sand (202-343-4646) (404-331 -3580); James W, Pulliam, Re- John Christian, Acting Chief City as recently as July 1986. The SESO gional Director: John I Christian. Assi- Office of Endangered Species informed the city about the prohibitions in stant Regional Director. Marshall P. (703-235-2771) the Endangered Species Act regarding in- Jones, Endangered Species Specialist. Earl B. Baysinger, Chief. cidental take of listed species and the reg- Federal Wildlife Permit Office Region 5, One Gateway Center, Suite 700, ulatory process that has been established (703-235-1937) Newton Corner, MA 02158 (617-965- for issuing permits to authorize such inci- Clark R Bavin, Chief. 5100); Howard Larson, Regional Direc- dental take. Division of Law Enforcement tor: Stephen W, Parry, Assistant Re- (202-343-9242) gional Director: Paul Nickerson, En- dangered Species Specialist. TECHNICAL BULLETIN Staff Pursuant to stipulations on a U.S. Army Michael Bender, Editor Region 6, P.O. Box 25486, Denver Federal Corps of Engineers permit and recommen- Denise Henne, Assistant Editor Center, Denver, CO 80225 (303-236- dations made through formal consultation (703-235-2407) 7920); Galen Buterbaugh, Regional Di- rector: John D, Green, Assistant Re- for the filling of 180 acres of wetlands at gional Director: Barry S. Mulder, En- Oakland Airport, the SESO is working with Regional Offices dangered Species Specialist. other agencies to develop a management agreement with the Port of Oakland. This Region 7, 1011 E. Tudor Rd., Anchorage, Region 1, Lloyd 500 BIdg,, Suite 1692, 500 agreement will provide for a secure Cal- N E. IVIultnomah St., Portland, OR AK 99503 (907-786-3542); Robert E ifornia least tern (Sterna antillarum brown!) 97232 (503-231-61 18); Rolf L. Wal- Gilmore, Regional Director, Jon Nelson, lenstrom. Regional Director, David F. Assistant Regional Director: Dennis nesting colony. The other involved agen- Riley, Assistant Regional Director] Money, Endangered Species Special- cies include the San Francisco Bay Con- Wayne S. White, Endangered Species ist. servation and Development Commission, Specialist. Region 8 (FWS Research and Develop- California Department of Fish and Game, Region 2, P.O. Box 1306, Albuquerque, NM ment), Washington, D C.
Load more

Recommended publications
  • Introductions of Threatened and Endangered Fishes (Full Statement)
    AFS Policy Statement #19: Introductions of Threatened and Endangered Fishes (Full Statement) ABSTRACT Introductions of threatened and endangered fishes are often an integral feature in their recovery programs. More than 80% of threatened and endangered fishes have recovery plans that call for introductions to establish a new population or an educational exhibit, supplement an existing population, or begin artificial propagation. Despite a large number of recent and proposed introductions, no systematic procedural policies have been developed to conduct these recovery efforts. Some introductions have been inadequately planned or poorly implemented. As a result, introductions of some rare fishes have been successful, whereas recovery for others has progressed slowly. In at least one instance, the introduced fish eliminated a population of another rare native organism. We present guidelines for introductions of endangered and threatened fishes that are intended to apply when an introduction is proposed to supplement an existing population or establish a new population. However, portions of the guidelines may be helpful in other Situations, such as establishing a hatchery stock. The guidelines are divided into three components: (1) selecting the introduction site, (2) conducting the introduction, and (3) post-introduction monitoring, reporting, and analysis. Implementation should increase success of efforts to recover rare fishes. "On 3 August 1968, we collected 30 or 40 individuals from among the inundated prickly pear and mesquite near the flooded spring, which by that time was covered with about 7 m of clear water." Peden (1973) The above quote described the collection of Amistad gambusia, Gambusia amistadensis, as its habitat was being flooded. Fortunately, most translocations of endangered fishes do not occur under such a feverish pace as did this collection of Amistad gambusia.
    [Show full text]
  • Full Issue PDF Volume 40, Issue 11
    Fisheries ISSN: 0363-2415 (Print) 1548-8446 (Online) Journal homepage: http://www.tandfonline.com/loi/ufsh20 Full Issue PDF Volume 40, Issue 11 To cite this article: (2015) Full Issue PDF Volume 40, Issue 11, Fisheries, 40:11, 525-572, DOI: 10.1080/03632415.2015.1115707 To link to this article: http://dx.doi.org/10.1080/03632415.2015.1115707 Published online: 05 Nov 2015. Submit your article to this journal Article views: 147 View related articles View Crossmark data Full Terms & Conditions of access and use can be found at http://www.tandfonline.com/action/journalInformation?journalCode=ufsh20 Download by: [Department Of Fisheries] Date: 13 March 2016, At: 23:47 FisheriesVol. 40 • No. 11 • November 2015 Downloaded by [Department Of Fisheries] at 23:47 13 March 2016 How to Thrive in Grad School Are Hermaphroditic Fish More Vulnerable to Fishing? Introduced Populations Help Preclude ESA Listing “I was amazed at how eective these gloves were and how easy they made handling of large-sized fishes.” – Alan Temple* “We were some of the first people to field-test [the gloves]. We used them last spring in our hatcheries to spawn muskies and walleye, and in the field to implant transmitters in muskies, walleyes and trout for telemetry studies. They worked great. We were really impressed.” – Je Hansbarger** · Portable, waterproof, and lightweight · Measuring and tagging made simple · Chemical free handling · Fish can be lawfully released immediately Downloaded by [Department Of Fisheries] at 23:47 13 March 2016 · Rubber gloves Safely immobilize live fish with Smith-Root’s new insulate user FISH HANDLING GLOVE SYSTEM.
    [Show full text]
  • Endangered Species
    FEATURE: ENDANGERED SPECIES Conservation Status of Imperiled North American Freshwater and Diadromous Fishes ABSTRACT: This is the third compilation of imperiled (i.e., endangered, threatened, vulnerable) plus extinct freshwater and diadromous fishes of North America prepared by the American Fisheries Society’s Endangered Species Committee. Since the last revision in 1989, imperilment of inland fishes has increased substantially. This list includes 700 extant taxa representing 133 genera and 36 families, a 92% increase over the 364 listed in 1989. The increase reflects the addition of distinct populations, previously non-imperiled fishes, and recently described or discovered taxa. Approximately 39% of described fish species of the continent are imperiled. There are 230 vulnerable, 190 threatened, and 280 endangered extant taxa, and 61 taxa presumed extinct or extirpated from nature. Of those that were imperiled in 1989, most (89%) are the same or worse in conservation status; only 6% have improved in status, and 5% were delisted for various reasons. Habitat degradation and nonindigenous species are the main threats to at-risk fishes, many of which are restricted to small ranges. Documenting the diversity and status of rare fishes is a critical step in identifying and implementing appropriate actions necessary for their protection and management. Howard L. Jelks, Frank McCormick, Stephen J. Walsh, Joseph S. Nelson, Noel M. Burkhead, Steven P. Platania, Salvador Contreras-Balderas, Brady A. Porter, Edmundo Díaz-Pardo, Claude B. Renaud, Dean A. Hendrickson, Juan Jacobo Schmitter-Soto, John Lyons, Eric B. Taylor, and Nicholas E. Mandrak, Melvin L. Warren, Jr. Jelks, Walsh, and Burkhead are research McCormick is a biologist with the biologists with the U.S.
    [Show full text]
  • 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).
    [Show full text]
  • American Fisheries Society Guidelines for Introductions of Threatened and Endangered Fishes Jack E. Williams, Donald W. Sada, Cy
    American Fisheries Society Guidelines for Introductions of Threatened and Endangered Fishes Jack E. Williams, Donald W. Sada, Cynthia Deacon Williams and Other Members of the Western Division Endangered Species Committee1 ABSTRACT Introductions of threatened and endangered fishes are often an integral feature in their recovery programs. More than 80% of threatened and endangered fishes have recovery plans that call for introductions to establish a new population or an educational exhibit, supplement an existing population, or begin artificial propagation. Despite a large number of recent and proposed introductions, no systematic procedural policies have been developed to conduct these recovery efforts. Some introductions have been inadequately planned or poorly implemented. As a result, introductions of same rare fishes have been successful, whereas recovery for others has progressed slowly. In at least one instance, the introduced fish eliminated a population of another rare native organism. We present guidelines for introductions of endangered and threatened fishes that are intended to apply when an introduction is proposed to supplement an existing population or establish a new population. However, portions of the guidelines may be helpful in other situations, such as establishing a hatchery stock. The guidelines are divided into three component: (1) selecting the introduction site, (2) conducting the introduction, and (3) post- introduction monitoring, reporting, and analysis, Implementation should increase success of efforts to recover rare fishes. Introduction "On 3 August 1968, we collected 30 or 40 individuals from among the inundated prickly pear and mesquite near the flooded spring, which by that time was covered with about 7 m of clear water."- Peden (1973) The above quote described the collection of Amistad gambusia, Gambusia amistadensis, as its habitat was being flooded.
    [Show full text]
  • 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).
    [Show full text]
  • Laboratory Operations Manual Version 2.0 May 2014
    United States Environmental Protection Agency Office of Water Washington, DC EPA 841‐B‐12‐010 National Rivers and Streams Assessment 2013‐2014 Laboratory Operations Manual Version 2.0 May 2014 2013‐2014 National Rivers & Streams Assessment Laboratory Operations Manual Version 1.3, May 2014 Page ii of 224 NOTICE The intention of the National Rivers and Streams Assessment 2013‐2014 is to provide a comprehensive “State of Flowing Waters” assessment for rivers and streams across the United States. The complete documentation of overall project management, design, methods, quality assurance, and standards is contained in five companion documents: National Rivers and Streams Assessment 2013‐14: Quality Assurance Project Plan EPA‐841‐B‐12‐007 National Rivers and Streams Assessment 2013‐14: Site Evaluation Guidelines EPA‐841‐B‐12‐008 National Rivers and Streams Assessment 2013‐14: Non‐Wadeable Field Operations Manual EPA‐841‐B‐ 12‐009a National Rivers and Streams Assessment 2013‐14: Wadeable Field Operations Manual EPA‐841‐B‐12‐ 009b National Rivers and Streams Assessment 2013‐14: Laboratory Operations Manual EPA 841‐B‐12‐010 Addendum to the National Rivers and Streams Assessment 2013‐14: Wadeable & Non‐Wadeable Field Operations Manuals This document (Laboratory Operations Manual) contains information on the methods for analyses of the samples to be collected during the project, quality assurance objectives, sample handling, and data reporting. These methods are based on the guidelines developed and followed in the Western Environmental Monitoring and Assessment Program (Peck et al. 2003). Methods described in this document are to be used specifically in work relating to the NRSA 2013‐2014.
    [Show full text]
  • Conservation Status of Imperiled North American Freshwater And
    FEATURE: ENDANGERED SPECIES Conservation Status of Imperiled North American Freshwater and Diadromous Fishes ABSTRACT: This is the third compilation of imperiled (i.e., endangered, threatened, vulnerable) plus extinct freshwater and diadromous fishes of North America prepared by the American Fisheries Society’s Endangered Species Committee. Since the last revision in 1989, imperilment of inland fishes has increased substantially. This list includes 700 extant taxa representing 133 genera and 36 families, a 92% increase over the 364 listed in 1989. The increase reflects the addition of distinct populations, previously non-imperiled fishes, and recently described or discovered taxa. Approximately 39% of described fish species of the continent are imperiled. There are 230 vulnerable, 190 threatened, and 280 endangered extant taxa, and 61 taxa presumed extinct or extirpated from nature. Of those that were imperiled in 1989, most (89%) are the same or worse in conservation status; only 6% have improved in status, and 5% were delisted for various reasons. Habitat degradation and nonindigenous species are the main threats to at-risk fishes, many of which are restricted to small ranges. Documenting the diversity and status of rare fishes is a critical step in identifying and implementing appropriate actions necessary for their protection and management. Howard L. Jelks, Frank McCormick, Stephen J. Walsh, Joseph S. Nelson, Noel M. Burkhead, Steven P. Platania, Salvador Contreras-Balderas, Brady A. Porter, Edmundo Díaz-Pardo, Claude B. Renaud, Dean A. Hendrickson, Juan Jacobo Schmitter-Soto, John Lyons, Eric B. Taylor, and Nicholas E. Mandrak, Melvin L. Warren, Jr. Jelks, Walsh, and Burkhead are research McCormick is a biologist with the biologists with the U.S.
    [Show full text]
  • The Sustainability of Freshwater Species and Water Resources Development Policy of the Army Corps of Engineers
    April 2009 The Sustainability of Freshwater Species and Water Resources Development Policy of the Army Corps of Engineers 09-R-9 U.S. Army Institute for Water Resources The Institute for Water Resources (IWR) is a Corps of Engineers Field Operating Activity located within the Washington DC National Capital Region (NCR), in Alexandria, Virginia and with satellite centers in New Orleans, LA and Davis, CA. IWR was created in 1969 to analyze and anticipate changing water resources management conditions, and to develop planning methods and analytical tools to address economic, social, institutional, and environmental needs in water resources planning and policy. Since its inception, IWR has been a leader in the development of strategies and tools for planning and executing the Corps water resources planning and water management programs. IWR strives to improve the performance of the Corps water resources program by examining water resources problems and offering practical solutions through a wide variety of technology transfer mechanisms. In addition to hosting and leading Corps participation in national forums, these include the production of white papers, reports, workshops, training courses, guidance and manuals of practice; the development of new planning, socio-economic, and risk-based decision-support methodologies, improved hydrologic engineering methods and software tools; and the management of national waterborne commerce statistics and other Civil Works information systems. IWR serves as the Corps expertise center for integrated water resources planning and management; hydrologic engineering; collaborative planning and environmental conflict resolution; and waterborne commerce data and marine transportation systems. The Institute’s Hydrologic Engineering Center (HEC), located in Davis, CA specializes in the development, documentation, training, and application of hydrologic engineering and hydrologic models.
    [Show full text]
  • Report 360 Aquifers of the Edwards Plateau Chapter CH 13 Fishes Of
    Chapter 13 Aquifer-Dependent Fishes of the Edwards Plateau Region Robert J. Edwards1, Gary P. Garrett2, and Nathan L. Allan3 Introduction Texas is fortunate to have a wealth of water resources that support diverse natural ecosystems as well as human communities. To a large degree, water will determine the future of the State. From the driest deserts of West Texas to the wettest regions of the Gulf Coast, the quantity and quality of water drives population and economic growth as well as the rich biodiversity of wildlife. The underground water resources provide the foundation of the character of the land and the people who live within the Edwards Plateau. Over the past century, development of the land and water resources of the Edwards Plateau has been limited primarily by economics and technology. Continued growth in the human population and advancements in technology are quickly removing these barriers and have brought the region to a crossroads that will determine the quality of life for future generations. For decades we have treated groundwater as if it were an endless supply of a renewable resource. The impacts of this approach are now evident: permanent loss of natural spring flows and headwater streams, declining instream flows of our rivers, and, ultimately, the degradation of freshwater inflows to our bays and estuaries. The aquifers of the Edwards Plateau are the source of the water that supplies the human and natural environments of Texas from the boundary with New Mexico to the Gulf Coast. In order to effectively consider the long-term conservation of these resources, we should consider the goal to be one of sustainable management.
    [Show full text]
  • NRSA 2013/14 Field Operations Manual Appendices (Pdf)
    National Rivers and Streams Assessment 2013/14 Field Operations Manual Version 1.1, April 2013 Appendix A: Equipment & Supplies Appendix Equipment A: & Supplies A-1 National Rivers and Streams Assessment 2013/14 Field Operations Manual Version 1.1, April 2013 pendix Equipment A: & Supplies Ap A-2 National Rivers and Streams Assessment 2013/14 Field Operations Manual Version 1.1, April 2013 Base Kit: A Base Kit will be provided to the field crews for all sampling sites that they will go to. Some items are sent in the base kit as extra supplies to be used as needed. Item Quantity Protocol Antibiotic Salve 1 Fish plug Centrifuge tube stand 1 Chlorophyll A Centrifuge tubes (screw-top, 50-mL) (extras) 5 Chlorophyll A Periphyton Clinometer 1 Physical Habitat CST Berger SAL 20 Automatic Level 1 Physical Habitat Delimiter – 12 cm2 area 1 Periphyton Densiometer - Convex spherical (modified with taped V) 1 Physical Habitat D-frame Kick Net (500 µm mesh, 52” handle) 1 Benthics Filteration flask (with silicone stopped and adapter) 1 Enterococci, Chlorophyll A, Periphyton Fish weigh scale(s) 1 Fish plug Fish Voucher supplies 1 pack Fish Voucher Foil squares (aluminum, 3x6”) 1 pack Chlorophyll A Periphyton Gloves (nitrile) 1 box General Graduated cylinder (25 mL) 1 Periphyton Graduated cylinder (250 mL) 1 Chlorophyll A, Periphyton HDPE bottle (1 L, white, wide-mouth) (extras) 12 Benthics, Fish Vouchers HDPE bottle (500 mL, white, wide-mouth) with graduations 1 Periphyton Laboratory pipette bulb 1 Fish Plug Microcentrifuge tubes containing glass beads
    [Show full text]
  • Hubbs Et Al 1991
    AN ANNOTATED CHECKLIST OF THE FRESHWATf,R FISHES OF TEXAS, WITH KEYS TO IDENTIFICATION OF SPECIES Cl-rrr Hurrs, RoBERT J. EDwARDs, lNo Glny p G,rnnrrr Depattment of Zoology, Unive^itr- of Texas at Austin, Austin, 7.exas 78712, Depa ment of Biology, Univelsity of Texas-Pan Ametican, E(tinbury,'fexas 7t|3g, and Hearr of the Hills Research Station, Texas Parks arul W/itdti.fe Depa meu, HCR 7 Box 62, Ingtam, kxas 78025 ABsrRAcT. Forty-five families and 247 species of fishes are known to inhabit the freshwaters of Texas. We repo( on the distribution and status of rhese fishes and provide a key to their identification. Ot the native lishes originally found in Texas, five taxa, Nolropir o/.d (phantom shiner), Nrrrropr.r simus simus (Rio Grande bluntnose shiner), CJpruneld lutrcnsis blairi (Maravillas red shiner), Gambusia amistadens$ (Amistad gambusia) and Gambusia georgei (S^n Marcos Sambusia) are apparently extinct, and three, Ofi?ofuynchus clarki yiginalis (Rio Crande cufthroat rrout), Hybognathus amarus (Fiio crande silvery minnow) and Gambusia senilis ('lotched gambusia) appear lo be extirpated from the state. More than 20 percent of the remaining primary freshwater species appear to be in some need of protection. r(el Texas fishesi dichotomous keys; fish distribulion; 'rordr: checklist. The freshwater fish fauna of Texas is conspicuous in its diversity and high degree of endemism. Contributing factors include the large geographic area covered by the state, the number of discontinuous drainages, and the diversity of hydrographic features. Equally important, however, is the fact that Texas occupies a broad transition zone between several major physiographic provinces of North America and encompasses a large number of distinctive biotic zones (Hubbs, 1957b; Edwards et al., 1989).
    [Show full text]