Author : Robert Ronald Campbell
Publisher :
Page : 16 pages
File Size : 26,79 MB
Release : 1994
Category : Endangered species
ISBN :
The spotted gar, Lepisosteus oculatus, occurs in fresh and brackish waters of the Gulf of Mexico, the Mississippi River basin, and Great Lakes basin. In Canada, has been found only rarely in lakes Erie and Ontario. This report provides information on the fish's geographic distribution, protection status, and population sizes and trends. It concludes with an evaluation of the future of the species in Canada and a recommended conservation designation.
Author :
Publisher :
Page : 94 pages
File Size : 12,71 MB
Release : 2001
Category : Fisheries
ISBN :
Author :
Publisher :
Page : 584 pages
File Size : 48,62 MB
Release : 1988
Category : Fisheries
ISBN :
Author : Mark Spitzer
Publisher : University of North Texas Press
Page : 252 pages
File Size : 48,39 MB
Release : 2015-03-15
Category : Nature
ISBN : 1574415999
The alligator gar belongs to a family of fish that has remained fundamentally unchanged since the Cretaceous, over 100 million years ago. Its intimidating size and plethora of teeth have made it demonized throughout its range in North America, resulting in needless killing. Massive oil spills in its breeding range have not helped its population either. Interspersing science, folklore, history, and action-packed fishing narratives, Spitzer's empathy for and fascination with this air-breathing, armored fish provides for an entertaining odyssey that examines management efforts to preserve and propagate the alligator gar in the United States. Spitzer also travels to Central America, Thailand, and Mexico to assess the global gar situation. He reflects on what is and isn't working in compromised environments, then makes a case for conservation based on personal experience and a love for wildness for its own sake. This colorful portrait of the alligator gar can serve as a metaphor and measurement for the future of our biodiversity during a time of planetary crisis.
Author :
Publisher :
Page : 748 pages
File Size : 14,47 MB
Release : 1991
Category : Natural history
ISBN :
Author :
Publisher :
Page : 690 pages
File Size : 50,17 MB
Release : 1987
Category : Ecology
ISBN :
Indexes journal articles in ecology and environmental science. Nearly 700 journals are indexed in full or in part, and the database indexes literature published from 1982 to the present. Coverage includes habitats, food chains, erosion, land reclamation, resource and ecosystems management, modeling, climate, water resources, soil, and pollution.
Author : Melvin L. Warren Jr.
Publisher : JHU Press
Page : 665 pages
File Size : 44,96 MB
Release : 2014-06-15
Category : Nature
ISBN : 1421412012
"The second volume of the definitive reference Freshwater Fishes of North America, encompassing families Characidae to Poeciliiadae, is the result of decades of analysis by leading fish experts from universities and reserch laboratories across North America" -- Page 4 de la couverture du volume 2.
Author :
Publisher :
Page : 366 pages
File Size : 41,25 MB
Release : 1989
Category : Fish culture
ISBN :
Author : Krzysztof Formicki
Publisher : CRC Press
Page : 614 pages
File Size : 39,36 MB
Release : 2019-10-08
Category : Science
ISBN : 0429532881
The book is a multi-authored book of 18 chapters comprising the state of the art work of all relevant topics on modern fish histology from 28 authors from ten countries. The topics include Introduction to Histological Techniques, Integument, Fish Skeletal Tissues, Muscular System, Structure and Function of Electric Organs, Digestive System, Glands of the Digestive Tract, Swim Bladder, Kidney, Ovaries and Eggs, Egg Envelopes, Testis Structure, Spermatogenesis, and Spermatozoa in Teleost Fishes, Cardiovascular System and Blood, Immune System of Fish, Gills: Respiration and Ionic-Osmoregulation, Sensory Organs, Morphology and Ecomorphology of the Fish Brain, and Endocrine System. Structural and functional aspects are treated and in a comparative way fish diversity at various taxonomic levels is integrated.
Author : Wade H. Shafer
Publisher : Springer Science & Business Media
Page : 307 pages
File Size : 31,39 MB
Release : 2013-11-21
Category : Science
ISBN : 1475757794
Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.
