The most comprehensive book ever written on leatherback sea turtles. Weighing as much as 2,000 pounds and reaching lengths of over seven feet, leatherback turtles are the world’s largest reptile. These unusual sea turtles have a thick, pliable shell that helps them to withstand great depths—they can swim more than one thousand meters below the surface in search of food. And what food source sustains these goliaths? Their diet consists almost exclusively of jellyfish, a meal they crisscross the oceans to find. Leatherbacks have been declining in recent decades, and some predict they will be gone by the end of this century. Why? Because of two primary factors: human redevelopment of nesting beaches and commercial fishing. There are only twenty-nine index beaches in the world where these turtles nest, and there is immense pressure to develop most of them into homes or resorts. At the same time, longline and gill net fisheries continue to overwhelm waters frequented by leatherbacks. In The Leatherback Turtle, James R. Spotila and Pilar Santidrián Tomillo bring together the world’s leading experts to produce a volume that reveals the biology of the leatherback while putting a spotlight on the conservation problems and solutions related to the species. The book leaves us with options: embark on the conservation strategy laid out within its pages and save one of nature’s most splendid creations, or watch yet another magnificent species disappear.

Published by the American Geophysical Union as part of the Water Science and Application Series, Volume 9. Groundwater recharge, the flux of water across the water table, is arguably the most difficult component of the hydrologic cycle to measure. In arid and semiarid regions the problem is exacerbated by extremely small recharge fluxes that are highly variable in space and time. --from the Preface Groundwater Recharge in a Desert Environment: The Southwestern United States speaks to these issues by presenting new interpretations and research after more than two decades of discipline-wide study. Discussions ondeveloping environmental tracers to fingerprint sources and amounts of groundwater at the basin scalethe critical role of vegetation in hydroecological processesnew geophysical methods in quantifying channel rechargeapplying Geographical Information System (GIS) models to land surface processescoupling process-based vadose zone to groundwater modeling, and more make this book a significant resource for hydmlogists, biogeoscientists, and geochemists concerned with water and water-related issues in arid and semiarid regions.

The indispensable traveler's guide to the history of places throughout the Land of Enchantment.

In the centuries before the arrival of Europeans, the Pueblo world underwent nearly continuous reorganization. Populations moved from Chaco Canyon and the great centers of the Mesa Verde region to areas along the Rio Grande, the Little Colorado River, and the Mogollon Rim, where they began constructing larger and differently organized villages, many with more than 500 rooms. Villages also tended to occur in clusters that have been interpreted in a number of different ways. This book describes and interprets this period of southwestern history immediately before and after initial European contact, A.D. 1275-1600—a span of time during which Pueblo peoples and culture were dramatically transformed. It summarizes one hundred years of research and archaeological data for the Pueblo IV period as it explores the nature of the organization of village clusters and what they meant in behavioral and political terms. Twelve of the chapters individually examine the northern and eastern portions of the Southwest and the groups who settled there during the protohistoric period. The authors develop histories for settlement clusters that offer insights into their unique development and the variety of ways that villages formed these clusters. These analyses show the extent to which spatial clusters of large settlements may have formed regionally organized alliances, and in some cases they reveal a connection between protohistoric villages and indigenous or migratory groups from the preceding period. This volume is distinct from other recent syntheses of Pueblo IV research in that it treats the settlement cluster as the analytic unit. By analyzing how members of clusters of villages interacted with one another, it offers a clearer understanding of the value of this level of analysis and suggests possibilities for future research. In addition to offering new insights on the Pueblo IV world, the volume serves as a compendium of information on more than 400 known villages larger than 50 rooms. It will be of lasting interest not only to archaeologists but also to geographers, land managers, and general readers interested in Pueblo culture.