DOCSLIB.ORG

American Eel and Other Fishes of the Colorado

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
American Eel and Other Fishes of the Colorado Texas and Colorado River Fishes UT Biodiversity Center Fishes of Texas and Colorado River UT Biodiversity Center Specimen-based data in FoTX UT Biodiversity Center 44 fish collections, 871 species, 91034 localities, 1852–present 30k • 124,451 species occurrence records (each = 1 jar of specimens) • (Soon 308,803 specimen-based + 1,284,000 other observations) 20k Occurrences Number of Occurrence Records by Decade 10k Number of 1850 1920 1970 1884 1968 2007 Data compilation/cleaning UT Biodiversity Center http://fishesoftexas.org How many species? Check our checklists UT Biodiversity Center Colorado River basin checklist says: • 105 freshwater species (in 20 families) • 77 native • 28 non-native Range and sample size examples UT Biodiversity Center 3,349 36 records records Cyprinella venusta Dionda sp3 (undescribed) Blacktail Shiner Colorado Roundnose Minnow Endangered single spring endemic UT Biodiversity Center 846 records Gambusia heterochir Close-up - total range < 1 mile in Menard Clear Creek Gambusia Co., San Saba (Colorado River) drainage. Federally endangered Single spring endemic. The State Fish – Guadalupe Bass UT Biodiversity Center 370 records Micropterus treculii records Micropterus treculii Close-up with major river basins Guadalupe Bass (it should be “Colorado Bass”) The State Fish – Guadalupe Bass UT Biodiversity Center Bean, Preston T. 2017. “Guadalupe Bass Conservation Plan: A Ten-Year Plan for Restoring and Preserving the State Fish of Texas 2017-2026.” Available from Texas Parks and Wildlife Department, 4200 Smith School Road, Austin, Texas 78744, USA. New invasive and possible impact UT Biodiversity Center 201 records 486 + 15 new records introduced locations Gobiosoma bosc Etheostoma lepidum Naked Goby Greenthroat Darter Invasive vs endangered UT Biodiversity Center 1,083 122 records records Herichthys cyanoguttatus Notropis oxyrhynchus Río Grande Cichlid Sharpnose Shiner Widely introduced in TX Federally endangered FoTX Trend analyses UT Biodiversity Center Notropis oxyrhynchus Sharpnose Shiner Federally endangered Herichthys cyanoguttatus Río Grande Cichlid Widely introduced in TX outside of Río Grande native range Species Distribution Models UT Biodiversity Center Micropterus treculii Guadalupe Bass Two surveys helped test SDMs UT Biodiversity Center Testing models in BARTON CREEK WATERSHED SURVEYS 1 James River (Llano) 0.9 Data source N species Collected Not (yet) collected Recent surveys 26 0.8 Historical data Same 26 + 7 0.7 Modeled community Same 33 + 7 0.6 More likely to occur occurrence in JamesRiver in occurrence 0.5 50% probability cut off line Less likely to occur 0.4 0.3 0.2 Modeled probability of Modeled probability 0.1 0 Modeled community (species) Native Fish Conservation Areas UT Biodiversity Center We then used models for all species and conservation planning software to identify and prioritize focal watersheds for preservation of freshwater fish diversity in Texas. This multispecies, watershed- based conservation prioritization is now being used to facilitate cooperative conservation of aquatic resources within Texas, supporting local implementation of the National Fish Habitat Action Plan through stakeholder planning and facilitation workshops. American & European Eel life history UT Biodiversity Center “classical” life history of Anguilla rostrata Catadromous – live in freshwater - 4 reproduce in Sargasso Sea: 5 1. 400,000 - 20 million eggs/female 3 2. larvae (leptocephali) - marine 3. glass eels enter estuaries & move upstream gaining pigment, becoming 4. Elvers that gradually transform into 2 6 5. yellow eels (immature). Unagi. Live up to 20+ years in freshwater (~ 2 ft). 6. mature into silver eels (3-5 ft long) - head 1 downstream and to Sargasso to http://www.naturalhistoryillustration.com/website%20images/American%20Eel.html (Natural History Magazine, Nov. 2009) spawn/die Global Eel production history UT Biodiversity Center All eel aquaculture still requires wild-caught glass 2010 – 260,000 tonnes eels, and now 3 closely related species are exploited. Glass eel fishery closed 2010 Culture Glass eels sold for started 1990s, $2,600/pound in New collapsing England in 2014 Japanese glass Culture eel fishery started 1880s 2000 – 11,000 tonnes US eel distribution – USGS / Natureserve UT Biodiversity Center Prominent and authoritative national and international sources of biodiversity data have long lacked data for Texas eels. map from: http://nas.er.usgs.gov/queries/factsheet.aspx?SpeciesID=310 Texas Comptroller assessment updated UT Biodiversity Center In 2014, Texas Comptroller determined that the economic impacts of USFWS’s proposed listing of the eel as endangered would be felt mostly in lower parts of rivers (blue counties). Data we compiled showed many recent occurrences far upstream of dams in many Texas rivers. 1964 – 1990 Base map from http://www.keepingtexasfirst.org/ (11/2014) 1991 – present others older or unknown FoTX assessment of eel native range UT Biodiversity Center The native range of American eel in Texas clearly included all of the state’s major rivers from their mouths to near headwaters of most. Though we have never found any report (let alone specimen) of a glass eel from TX, obviously they must be showing up here or none of those specimen-based dots would exist. How do leptocephali get to Texas? UT Biodiversity Center Approximate birthplace of eels in Sargasso |-----------------2000 miles----------------| It’s unknown how eel leptocephali get from the Sargasso to the Gulf of X México. The Gulf Current around tip of Florida would seem to exclude a direct route to TX. Leptocepahali increasing in size were tracked leaving Sargasso into Caribbean. That route to TX is >> 3,000+ miles! Adapted from: http://www.eoearth.org/edit/article/51cbefea7896bb431f69f769//?topic=51cbfc79f702fc2ba812a1b7 Glass eel migration UT Biodiversity Center Glass eels are key for monitoring populations on the east coast, and so are well known. They: • Arrive to Atlantic rivers predictably every spring • Form groups & head upstream en masse over 4-6 week period. • Move 3-13 mi / night, increasing pigmentation and becoming elvers (4+ Glass eel inches) • But, they have never been seen in Texas rivers (at least not by biologists) Where to see eels in the Austin area UT Biodiversity Center There is almost always a yellow eel or two in Barton Springs, a tributary of … little dam How do they get into Ladybird Lake? UT Biodiversity Center Longhorn (big) Dam History of Austin area yellow eel records UT Biodiversity Center Lots of old and new yellow eel records in Austin area, including: 1. still 1 or 2 yellow eels seen regularly in Barton Springs Pool. 2. 1950’s – 1970s eels caught regularly in Barton Creek headwaters on Shield Ranch (~25 miles above Longhorn Dam). 3. Before 1961 in Lake Austin, and in Lake Austin 4. Shoal Creek. They are still in Ladybird Lake. 3 5. Currently also relatively common below Longhorn Dam and in Mouth of Shoal tributaries entering below it (e.g. Onion Creek) Creek, 2 4 Shield Ranch 1 Downtown Austin Barton Springs Longhorn dam 5 Image from http://americaneel.org/eel-thefts-spur-action/ Onion Creek Connecticut - baby eels go for it! UT Biodiversity Center “Horseshoe Pond dam abutment. Trickles of water leak through the cracks in the granite from the pond above, and the eels follow. It's about a three foot vertical climb to the1674 -1824 uppermost seam below the red line. How they make their way through the granite to the pond and river above is a mystery of sorts, but some of them do make it.” Image from http://www.glooskapandthefrog.org/eel%20gallery.htm Glass/elvers aggregating for ascent UT Biodiversity Center NOTE HIGH CURRENT VELOCITY 1674-1824 Image from http://www.glooskapandthefrog.org/eel%20gallery.htm Getting organized at the base of the wall UT Biodiversity Center 1674-1824 Image from http://www.glooskapandthefrog.org/eel%20gallery.htm The ascent begins UT Biodiversity Center Leaving the river and heading up wet wall 1674-1824 Image from http://www.glooskapandthefrog.org/eel%20gallery.htm The front line UT Biodiversity Center Negotiating a vertical wall 1674-1824 Image from http://www.glooskapandthefrog.org/eel%20gallery.htm Image from http://www.glooskapandthefrog.org/eel%20gallery.htm Helping each other??? UT Biodiversity Center Cooperating to get past an overhang? 1674-1824 Image from http://www.glooskapandthefrog.org/eel%20gallery.htm Alternative routes UT Biodiversity Center Taking another route at different discharge 1674-1824 Image from http://www.glooskapandthefrog.org/eel%20gallery.htm A crack into Ladybird Lake for baby eels? UT Biodiversity Center Some of Longhorn Longhorn Dam – 36 feet high dam’s lift gates (used with 7 lift gates like this one. only in emergencies) leak. The result looks a lot like custom- 1674-1824 made glass/elver sampling traps used in monitoring programs in the eastern US. Colorado River to Gulf of Mexico Lake Ladybird Recent Coleto Creek sample UT Biodiversity Center May 2016 (afternoon – 2:30 AM) So, we’re learning how to sample – using every kind of passive & catch elvers and bigger active net or trap we had. ones, and now we have a Night shocking + frog gigs, and trot list of similar-looking lines with small treble hooks were places to visit most productive for eels: • 17 specimens • 147 – 502 mm Coleto Creek Reservoir • Most from rip-rap TPWD Facebook post responses UT Biodiversity Center Responses to TPWD Facebook page request for recent observations Social networks and newspapers are productive sources of recent
Load more

Recommended publications
  • Fish Survey for Calhoun, Gordon County, Georgia
    Blacktail Redhorse (Moxostoma poecilurum) from Oothkalooga Creek Fish Survey for Calhoun, Gordon County, Georgia Prepared by: DECATUR, GA 30030 www.foxenvironmental.net January 2018 Abstract Biological assessments, in conjunction with habitat surveys, provide a time-integrated evaluation of water quality conditions. Biological and habitat assessments for fish were conducted on 3 stream segments in and around Calhoun, Gordon County, Georgia on October 3 and 5, 2017. Fish, physical habitat, and water chemistry data were evaluated according to Georgia Department of Natural Resources (GADNR), Wildlife Resources Division (WRD) – Fisheries Section protocol entitled “Standard Operating Procedures for Conducting Biomonitoring on Fish Communities in Wadeable Streams in Georgia”. All of the water quality parameters at all sites were within the typical ranges for streams although conductivity was somewhat high across the sites. Fish habitat scores ranged from 80 (Tributary to Oothkalooga Creek) to 132.7 (Oothkalooga Creek). Native fish species richness ranged from 6 species (Tributary to Oothkalooga Creek) to 17 (Oothkalooga and Lynn Creeks). Index of biotic integrity (IBI) scores ranged from 16 (Tributary to Oothkalooga Creek; “Very Poor”) to 34 (Lynn Creek; “Fair”). Overall, the results demonstrate that Oothkalooga and Lynn Creeks are in fair condition whereas the Tributary to Oothkalooga Creek is highly impaired. Although the data are only a snapshot of stream conditions during the sampling events, they provide a biological characterization from which to evaluate the effect of future changes in water quality and watershed management in Calhoun. We recommend continued monitoring of stream sites throughout the area to ensure that the future ecological health of Calhoun’s water resources is maintained.
    [Show full text]
  • MEXICO Las Moras Seco Creek K Er LAVACA MEDINA US HWY 77 Springs Uvalde LEGEND Medina River
    Cedar Creek Reservoir NAVARRO HENDERSON HILL BOSQUE BROWN ERATH 281 RUNNELS COLEMAN Y ANDERSON S HW COMANCHE U MIDLAND GLASSCOCK STERLING COKE Colorado River 3 7 7 HAMILTON LIMESTONE 2 Y 16 Y W FREESTONE US HW W THE HIDDEN HEART OF TEXAS H H S S U Y 87 U Waco Lake Waco McLENNAN San Angelo San Angelo Lake Concho River MILLS O.H. Ivie Reservoir UPTON Colorado River Horseshoe Park at San Felipe Springs. Popular swimming hole providing relief from hot Texas summers. REAGAN CONCHO U S HW Photo courtesy of Gregg Eckhardt. Y 183 Twin Buttes McCULLOCH CORYELL L IRION Reservoir 190 am US HWY LAMPASAS US HWY 87 pasas R FALLS US HWY 377 Belton U S HW TOM GREEN Lake B Y 67 Brady iver razos R iver LEON Temple ROBERTSON Lampasas Stillhouse BELL SAN SABA Hollow Lake Salado MILAM MADISON San Saba River Nava BURNET US HWY 183 US HWY 190 Salado sota River Lake TX HWY 71 TX HWY 29 MASON Buchanan N. San G Springs abriel Couple enjoying the historic mill at Barton Springs in 1902. R Mason Burnet iver Photo courtesy of Center for American History, University of Texas. SCHLEICHER MENARD Y 29 TX HW WILLIAMSON BRAZOS US HWY 83 377 Llano S. S an PECOS Gabriel R US HWY iver Georgetown US HWY 163 Llano River Longhorn Cavern Y 79 Sonora LLANO Inner Space Caverns US HW Eckert James River Bat Cave US HWY 95 Lake Lyndon Lake Caverns B. Johnson Junction Travis CROCKETT of Sonora BURLESON 281 GILLESPIE BLANCO Y KIMBLE W TRAVIS SUTTON H GRIMES TERRELL S U US HWY 290 US HWY 16 US HWY P Austin edernales R Fredericksburg Barton Springs 21 LEE Somerville Lake AUSTIN Pecos
    [Show full text]
  • Ontogeny and Allometry of Body Shape in the Blacktail Shiner, Cyprinella Venusta
    Copeia, 2000(1), pp. 270±275 Ontogeny and Allometry of Body Shape in the Blacktail Shiner, Cyprinella venusta CRAIG S. HOOD AND DAVID C. HEINS Ontogenetic changes in body shape and its associated allometry were studied in the Blacktail Shiner, Cyprinella venusta, using geometric morphometric methods. We used a single, large sample (n 5 397; 182 males, 215 females), collected in Catahoula Creek, Jourdan River drainage, Hancock County, Mississippi. Ten body landmarks were digitized from each specimen, which yielded partial warp scores that were used as shape variables to describe body shape change during ontogeny, assess sexual dimorphism, and investigate the relationship between reproductive status and on- togenetic body shape change. We also assessed the effect of sexual dimorphism on size and body shape. The null hypothesis of isometry during ontogeny was strongly rejected by multivariate regression of shape on size for both sexes (males, P , 0.0001, F 5 21.970; females, P , 0.0001, F 5 16.238). We found large, highly signi®cant sexually dimorphic differences in the body shapes of males and females (MANOVA for overall shape, P , 0.0001, F 5 7.535, Wilks' lambda, 0.758), which remained signi®cant using MANCOVA with size as a covariate (log SL, P , 0.0001, F 5 34.872, Wilks' lambda, 0.438; log CS, P , 0.0001, F 5 34.829, Wilks' lambda, 0.439). Moreover, the ontogeny of body shape differs between males and females. There were highly signi®cant shape differences among reproductive classes within males and females. These ®ndings suggest that change in reproductive status may occur in concert with body shape change.
    [Show full text]
  • Pennington Creek Fish
    FAMILY: CENTRARCHIDAE (sunfishes) FAMILY: CYPRINIDAE (minnows) Bluegill Orangespotted Sunfish Smallmouth Bass Bigeye Shiner Lepomis macrochirus Lepomis humilis Micropterus dolomieu Notropis boops Characteristics: deep-bodied, small mouth, Characteristics: small with orange spots Characteristics: large mouth, vertical dark Characteristics: large eye relative to black spot posterior dorsal rays on side, long white-edged opercular flap bars are sometimes present on olive- body size, large mouth with a small bronze colored sides of the fish, juveniles head, dark lateral stripe extends from have an orange and black band on the cau- the lips through the eye to the end of dal fin the caudal peduncle Green Sunfish Redear Sunfish Largemouth Bass Blacktail Shiner Lepomis cyanellus Lepomis microlophus Micropterus salmoides Cyprinella venusta Characteristics: elongated body, large Characteristics: large, short opercular flap Characteristics: large mouth, upper jaw Characteristics: prominent black spot at mouth, black spot posterior dorsal & anal with a bright red crescent marking extends past the eye, dark midlateral the base of the caudal fin, large stripe from snout to base of the caudal fin diamond shaped scales outlined in black, breeding males develop yellow fins Longear Sunfish White & Black Crappie Spotted Bass Bluntnose Minnow Lepomis megalotis Pomoxis annularis, Pomoxis nigromacula- Micropterus punctulatus Pimephales notatus Characteristics: small, deep-bodied, long tus Characteristics: resembles the largemouth Characteristics: blunt, rounded
    [Show full text]
  • BAT-WATCHING SITES of TEXAS Welcome! Texas Happens to Be the Battiest State in the Country
    BAT-WATCHING SITES OF TEXAS Welcome! Texas happens to be the battiest state in the country. It is home to 32 of the 47 species of bats found in the United States. Not only does it hold the distinction of having the most kinds of bats, it also boasts the largest known bat colony in the world, Bracken Cave Preserve, near San Antonio, and the largest urban bat colony, Congress Avenue Bridge, in Austin. Visitors from around the world flock BAT ANATOMY to Texas to enjoy public bat-viewing at several locations throughout the state. This guide offers you a brief summary of what each site has to offer as well as directions and contact information. It also includes a list of the bat species currently known to occur within Texas at the end of this publication. Second Finger We encourage you to visit some of these amazing sites and experience the Third Finger wonder of a Texas bat emergence! Fourth Finger Thumb Fifth Finger A Year in the Life Knee of a Mexican Free-tailed Bat Upper Arm Foot Forearm Mexican free-tailed bats (also in mammary glands found under each Tail known as Brazilian free-tailed bats) of her wings. Wrist are the most common bat found The Mexican free-tailed bats’ milk is throughout Texas. In most parts of so rich that the pups grow fast and are Tail Membrane the state, Mexican free-tailed bats ready to fly within four to five weeks of Ear are migratory and spend the winters birth. It is estimated that baby Mexican in caves in Mexico.
    [Show full text]
  • Proposed Rule
    Billing Code 4333–15 DEPARTMENT OF THE INTERIOR Fish and Wildlife Service 50 CFR Part 17 [FWS–R2–ES–2019–0061; FF09E21000 FXES11110900000 212] RIN 1018–BD16 Endangered and Threatened Wildlife and Plants; Endangered Species Status with Critical Habitat for Guadalupe Fatmucket, Texas Fatmucket, Guadalupe Orb, Texas Pimpleback, and False Spike, and Threatened Species Status with Section 4(d) Rule and Critical Habitat for Texas Fawnsfoot AGENCY: Fish and Wildlife Service, Interior. ACTION: Proposed rule. SUMMARY: We, the U.S. Fish and Wildlife Service (Service or USFWS), propose to list six Central Texas mussel species: the Guadalupe fatmucket (Lampsilis bergmanni), Texas fatmucket (Lampsilis bracteata), Texas fawnsfoot (Truncilla macrodon), Guadalupe orb (Cyclonaias necki), Texas pimpleback (Cyclonaias (=Quadrula) petrina), and false spike (Fusconaia (=Quincuncina) mitchelli) as endangered or threatened under the Endangered Species Act of 1973, as amended (Act). After review of the best available scientific and commercial information, we find that listing Guadalupe fatmucket, Texas fatmucket, Guadalupe orb, Texas pimpleback, and false spike as endangered species is warranted, and listing Texas fawnsfoot as a threatened species is warranted. We propose a rule issued under section 4(d) of the Act (“4(d) rule”) for the Texas fawnsfoot. If we finalize this rule as proposed, it would add these species to the List of Endangered and Threatened Wildlife and extend the Act’s protections to the species. We also propose to designate critical habitat for all six species under the Act. In total, approximately 1,944 river miles (3,129 river kilometers) in Texas fall within the boundaries of the proposed critical habitat designations.
    [Show full text]
  • Life History Plasticity of the Blacktail Shiner (Cyprinella
    LIFE HISTORY PLASTICITY OF THE BLACKTAIL SHINER (CYPRINELLA VENUSTA) ACROSS DISTURBANCE GRADIENTS IN ALABAMA STREAMS Except where reference is made to the work of others, the work described in this thesis is my own or was done in collaboration with my advisory committee. This thesis does not include proprietary or classified information. ______________________________ Lemuel Robles Casten Certificate of approval: __________________________ __________________________ George W. Folkerts Carol E. Johnston, Chair Professor Associate Professor Biological Sciences Fisheries and Allied Aquacultures __________________________ __________________________ Russell A. Wright Stephen L. McFarland Associate Professor Acting Dean Fisheries and Allied Aquacultures Graduate School LIFE HISTORY PLASTICITY OF THE BLACKTAIL SHINER (CYPRINELLA VENUSTA) ACROSS DISTURBANCE GRADIENTS IN ALABAMA STREAMS Lemuel Robles Casten A Thesis Submitted to the Graduate Faculty of Auburn University in Partial Fulfillment of the Requirements for the Degree of Master of Science Auburn, Alabama August 7, 2006 LIFE HISTORY PLASTICITY OF THE BLACKTAIL SHINER (CYPRINELLA VENUSTA) ACROSS DISTURBANCE GRADIENTS IN ALABAMA STREAMS Lemuel Robles Casten Permission is granted to Auburn University to make copies of this thesis at its direction, upon request of individuals or institutions and at their expense. The author reserves all publication rights. __________________________ Signature of Author __________________________ Date of Graduation iii VITA Lemuel Robles Casten, was born in Iloilo City, Philippines on February 21, 1975. He attended the University of the Philippines in the Visayas and graduated with a Bachelor of Science degree in Fisheries in 1997. After graduation, he worked as fisheries officer for the International Marinelife Alliance and was research assistant for FishBase and LarvalBase Projects of the WorldFish Center from 1999-2004.
    [Show full text]
  • Summary of Sexual Abuse Claims in Chapter 11 Cases of Boy Scouts of America
    Summary of Sexual Abuse Claims in Chapter 11 Cases of Boy Scouts of America There are approximately 101,135sexual abuse claims filed. Of those claims, the Tort Claimants’ Committee estimates that there are approximately 83,807 unique claims if the amended and superseded and multiple claims filed on account of the same survivor are removed. The summary of sexual abuse claims below uses the set of 83,807 of claim for purposes of claims summary below.1 The Tort Claimants’ Committee has broken down the sexual abuse claims in various categories for the purpose of disclosing where and when the sexual abuse claims arose and the identity of certain of the parties that are implicated in the alleged sexual abuse. Attached hereto as Exhibit 1 is a chart that shows the sexual abuse claims broken down by the year in which they first arose. Please note that there approximately 10,500 claims did not provide a date for when the sexual abuse occurred. As a result, those claims have not been assigned a year in which the abuse first arose. Attached hereto as Exhibit 2 is a chart that shows the claims broken down by the state or jurisdiction in which they arose. Please note there are approximately 7,186 claims that did not provide a location of abuse. Those claims are reflected by YY or ZZ in the codes used to identify the applicable state or jurisdiction. Those claims have not been assigned a state or other jurisdiction. Attached hereto as Exhibit 3 is a chart that shows the claims broken down by the Local Council implicated in the sexual abuse.
    [Show full text]
  • Kyfishid[1].Pdf
    Kentucky Fishes Kentucky Department of Fish and Wildlife Resources Kentucky Fish & Wildlife’s Mission To conserve, protect and enhance Kentucky’s fish and wildlife resources and provide outstanding opportunities for hunting, fishing, trapping, boating, shooting sports, wildlife viewing, and related activities. Federal Aid Project funded by your purchase of fishing equipment and motor boat fuels Kentucky Department of Fish & Wildlife Resources #1 Sportsman’s Lane, Frankfort, KY 40601 1-800-858-1549 • fw.ky.gov Kentucky Fish & Wildlife’s Mission Kentucky Fishes by Matthew R. Thomas Fisheries Program Coordinator 2011 (Third edition, 2021) Kentucky Department of Fish & Wildlife Resources Division of Fisheries Cover paintings by Rick Hill • Publication design by Adrienne Yancy Preface entucky is home to a total of 245 native fish species with an additional 24 that have been introduced either intentionally (i.e., for sport) or accidentally. Within Kthe United States, Kentucky’s native freshwater fish diversity is exceeded only by Alabama and Tennessee. This high diversity of native fishes corresponds to an abun- dance of water bodies and wide variety of aquatic habitats across the state – from swift upland streams to large sluggish rivers, oxbow lakes, and wetlands. Approximately 25 species are most frequently caught by anglers either for sport or food. Many of these species occur in streams and rivers statewide, while several are routinely stocked in public and private water bodies across the state, especially ponds and reservoirs. The largest proportion of Kentucky’s fish fauna (80%) includes darters, minnows, suckers, madtoms, smaller sunfishes, and other groups (e.g., lam- preys) that are rarely seen by most people.
    [Show full text]
  • E,Stuarinc Areas,Tex'asguifcpasl' Liter At'
    I I ,'SedimentationinFluv,ial~Oeltaic \}1. E~tlands ',:'~nd~ E,stuarinc Areas,Tex'asGuIfCpasl' Liter at' . e [ynthesis I Cover illustration depicts the decline of marshes in the Neches River alluvial valley between 1956 and 1978. Loss of emergent vegetation is apparently due to several interactive factors including a reduction of fluvial sediments delivered to the marsh, as well as faulting and subsidence, channelization, and spoil disposal. (From White and others, 1987). SEDIMENTATION IN FLUVIAL-DELTAIC WETLANDS AND ESTUARINE AREAS, TEXAS GULF COAST Uterature Synthesis by William A. White and Thomas R. Calnan Prepared for Texas Parks and Wildlife Department Resource Protection Division in accordance with Interagency Contracts (88-89) 0820 and 1423 Bureau of Economic Geology W. L. Fisher, Director The University of Texas at Austin Austin, Texas 78713 1990 CONTENTS Introduction . Background and Scope of Study . Texas Bay-Estuary-lagoon Systems................................................................................................. 2 Origin of Texas Estuaries........................................................................................................ 4 General Setting.............................................................................. 6 Climate 10 Salinity 20 Bathymetry..................................... 22 Tides 22 Relative Sea-level Rise.......................................................................................................... 23 Eustatic Sea-level Rise....................................................................................................
    [Show full text]
  • Drainage Areas of Texas Streams Colorado River Basin
    DRAINAGE AREAS OF TEXAS STREAMS COLORADO RIVER BASIN LP-145 COOPERATORS: U. S. GEOLOGICAL SURVEY TEXAS DEPARTMENT OF WATER RESOURCES TEXAS DEPARTMENT OF WATER RESOURCES 1981 DRAINAGE AREAS OF TEXAS STREAMS COLORADO RIVER BASIN by H. Tovar and B. N. Maldonado U.S. Geological Survey This report was prepared under cooperative agreement between the U.S. Geological Survey and the Texas Department of Water Resources Texas Department of Water Resources LP-145 1981 CONTENTS Page Metric conversions 1 Introduction - 2 Purpose and scope of this report 2 Previous reports 2 Concepts of drainage areas - 4 Description of the basin-- --- 4 Methods of drainage-area determinations 4 Methods of river-mile determination 6 Tabulation of data 6 References cited 8 in ILLUSTRATIONS Page Figure 1. Map showing State designated river basins and coastal basins in Texas 3 2. Map showing major streams and tributaries in the Colorado River basin 5 TABLE Table 1. Drainage-area data for the Colorado River basin- IV METRIC CONVERSIONS For readers interested in using the metric system, the inch-pound units used in this report may be converted to metric units by the following factors: From Multiply by To obtain inch 2.54 centimeter mile 1.609 kilometer square mile 2.590 square kilometer DRAINAGE AREAS OF TEXAS STREAMS COLORADO RIVER BASIN By F. H. Tovar and B. N. Maldonado U.S. Geological Survey INTRODUCTION In 1951, the Federal Inter-Agency River Basin Committee, Subcommittee on Hydrology, designated the U.S. Army Corps of Engineers as the coordinating agency for the determination of drainage areas in the Arkansas and Red River basins.
    [Show full text]
  • Inland Fisheries Annual Report 2018
    INLAND FISHERIES ANNUAL REPORT 2018 IMPROVING THE QUALITY OF FISHING Carter Smith Craig Bonds Executive Director Director, Inland Fisheries INLAND FISHERIES ANNUAL REPORT 2018 TEXAS PARKS AND WILDLIFE DEPARTMENT Commissioners Ralph H. Duggins Chair, Fort Worth S. Reed Morian Vice-Chair, Houston T. Dan Friedkin Houston Anna B. Galo Laredo Bill Jones Austin Jeanne W. Latimer San Antonio James H. Lee Houston Dick Scott Wimberley Kelcy L. Warren Dallas Lee M. Bass Chairman-Emeritus Ft. Worth TABLE OF CONTENTS INLAND FISHERIES OVERVIEW .............................................................. 1 • Mission 1 • Scope 1 • Agency Goals 1 • Division Goals 1 • Staff 2 • Facilities 2 • Contact Information 2 • Funding and Allocation 3 WHAT WE DO ............................................................................................ 4 • Administration 4 • Habitat Conservation 4 • Fisheries Management and Research 5 • Hatcheries 5 • Analytical Services 6 • Information and Regulations 6 • Texas Freshwater Fisheries Center 7 KEY ACCOMPLISHMENTS ....................................................................... 8 • Fish Habitat Improvement Efforts 8 • Monitoring, Management Plans and Permits 9 • Applied Management and Conservation Actions 10 • Research Highlights 12 • Outreach 12 • Infrastructure Enhancements 14 • Agency-wide Collaboration 14 APPENDIX ................................................................................................ 16 • Organization Charts 17 • Stocking Reports 23 • Research and Special Projects 24 • Publications
    [Show full text]