This text explores the natural history of Texas and more than 2900 springs in 183 Texas counties. It also includes an in-depth discussion of the general characteristics of springs - their physical and prehistoric settings, their historical significance, and their associated flora and fauna.
With this book, published more than a half-century ago, Aldo Leopold created the discipline of wildlife management. Although A Sand Country Almanac is doubtless Leopold’s most popular book, Game Management may well be his most important. In this book he revolutionized the field of conservation.
Understanding the issues that have been encountered at other sites, and the steps that have led to successful resolution of these issues, can provide great help to those considering, planning, or implementing new groundwater recharge projects. Recent technical advances and operational experience have demonstrated that well recharge is a feasible and cost effective method of artificially recharging natural aquifers. This practical guide reviews the technical constraints and issues that have been addressed and resolved through research and experience at many sites. The book presents aquifer storage recovery (ASR) technology and traces its evolution over the past 25 years in the United States. Procedures for groundwater recharge are presented, and selected case studies are examined. Drinking water quality standards and conversion factors are provided in the appendix for easy reference.
This guidebook, now thoroughly updated and revised in its second edition, gives comprehensive advice on the designing and setting up of monitoring programmes for the purpose of providing valid data for water quality assessments in all types of freshwater bodies. It is clearly and concisely written in order to provide the essential information for all agencies and individuals responsible for the water quality.
This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.
In 2023, the Texas Department of Parks and Wildlife marks the 100th anniversary of the state park system. From its inception in 1923, the Texas park system has grown to 95 sites, covering more than 627,000 acres and comprising 74 state parks, 13 historic sites, and 8 natural areas. This vast collection of natural lands and public places now accommodates almost 9 million visitors each year. The Art of Texas State Parks celebrates this rich tradition, offering an engaging visual arts survey of Texas state parks as seen through the eyes of leading artists from across the state. Editors Andrew Sansom and Linda J. Reaves have collected original works from thirty of the state's most influential artists. These stunning visual works are accompanied by a thoughtful essay by William E. Reaves on the time-honored legacy of landscape painting in Texas and by Sansom's reflections on the vital place of landscape art in Texas conservation. Rounding out the collection, assistant state park director Kevin Good offers an informative profile of Texas state parks, and the work concludes with profiles of the artists whose pieces appear in this special centennial collection. The centennial of the state parks system offers the perfect occasion to create a lasting visual record of Texas parks in art while memorializing the past and ongoing development of the distinctive collection of Lone Star parks and natural areas. The Art of Texas State Parks offers readers increased awareness of Texas parklands and heightens their popular appeal through the elegant and inspired works of some of Texas' finest contemporary artists. Includes the work of these artists: Randy Bacon, Abilene Mary Baxter, Marfa David Caton, Utopia Charles Criner, Houston Margie Crisp, Elgin Ric Dentinger, San Antonio Fidencio Duran, Austin Janet Eager Krueger, Encinal Joel R. Edwards, Waco Malou Flato, Austin Gordon Fowler, Austin Pat Gabriel, Fort Worth David R. Griffin, Dallas Brian Grimm, Fredericksburg Clemente F. Guzman III, San Antonio Karl E. Hall, Houston John Austin Hanna, Fredericksburg Billy Hassell, Fort Worth Hailey E. Herrera, Bryan Lee Jamison, Huntsville Denise LaRue Mahlke, Whitehouse Talmage Minter, Waco William B. Montgomery, Elgin Kermit Oliver, Waco Noe Perez, Corpus Christi Jeri Salter, Hutto Jim Stoker, San Antonio Bob Stuth-Wade, Dublin Terri M. Wells, Austin