Author : Julianne Kalman
Publisher :
Page : 126 pages
File Size : 41,93 MB
Release : 2001
Category : Copepoda
ISBN :
Author : Julianne Erika Kalman
Publisher :
Page : 280 pages
File Size : 16,1 MB
Release : 2006
Category : Marine fishes
ISBN :
Author : Larry G. Allen
Publisher : Univ of California Press
Page : 672 pages
File Size : 50,65 MB
Release : 2006
Category : Business & Economics
ISBN : 0520246535
“A masterful accomplishment—Allen, Pondella and Horn have assembled a talented team of experts who produce authoritative, up-to-date accounts. This book will be used as the primary text in many fish biology courses and as a valuable reference elsewhere. Here is a wealth of data waiting to be mined by legions of graduate students as they generate the new ideas that will motivate marine ecology for years.”—Peter Sale, Editor of Coral Reef Fishes: Dynamics and Diversity in a Complex Ecosystem "A copiously illustrated and comprehensive interpretation of the past, present, and future state of over 500 species of fishes in Californian waters. A compilation of virtually all the many important studies on the ecology of California marine fishes."—Bruce B. Collette, National Marine Fisheries Service and co-author of The Diversity of Fishes
Author : Dustin Sparr
Publisher :
Page : 66 pages
File Size : 42,87 MB
Release : 2015
Category :
ISBN :
Numerous studies have shown that fish parasite communities change in response to pollution levels and could serve as effect bioindicators of ecosystem health. My study sought bioindicators of chemical pollution in parasitological data, i.e., species richness and overall abundance, and the prevalence and intensity of individual endohelminths in particular host fishes. The hosts I studied were Citharichthys stigmaeus (speckled sanddab), Citharichthys sordidus (Pacific sanddab), and Parophrys vetulus (English sole). Of these three species, 250 flatfish were collected from 13 trawl stations in the Santa Monica Bay and Los Angeles-Long Beach Harbor areas, both areas known to be affected by anthropogenic pollution. Flatfish were necropsied for macroparasites. Also recorded were host measures (sizes of fish and of livers, age, and gender). Sediment profiles of PCBs, DDT, and select heavy metals for spots near my sample locations were used from Hyperion's 2008 sediment pollutant data. I characterized pollutant risk at each station using Sediment Quality Values (SQVs), and I generated hazard quotients (HQ) scaled to Threshold Effects Levels (TEL) and Probable Effects Levels (PEL). My results indicate that endohelminth community parameters such as species richness and abundance may indicate sediment pollutant loads of DDT and of heavy metals. In addition, the endoparasites Lacistorynchus dollfusi, Scolex pleuronectis, Anisakis simplex, and Cucullanus annulatus may serve as effect bioindicators of pollution.
Author : Abdel-Ghaffar Fathy
Publisher : LAP Lambert Academic Publishing
Page : 168 pages
File Size : 26,24 MB
Release : 2015-08-03
Category :
ISBN : 9783659501890
Fish is a commodity of potential public health concern as it could contaminated with a wide range of environmentally persistent chemicals, including heavy metals and parasitism. The present study aimed to investigate some of helminth parasites infecting the most of economically important marine fish in Egypt. The collected fish were Anguilla anguilla, Lethrinus lentjan, Pagrus pagrus, Saurida tumbil, Siganus revulatus, Solea solea, and Sparus aurata. The present investigation of parasitic infections was carried out by means of morphologic and morphometric characterization of the isolated parasites using light and scanning electron microscopy. In addition, molecular analyses of parasites SSU rDNA gene sequences and its phylogenetic relationships were applied to detect their exact taxonomy. The role of the recorded parasites as bio-indicators for water pollution was determined by measuring the concentration of some heavy metals (Fe, Zn, Ni, Cu, Cd, and Pb) in parasites and tissues of fish hosts.
Author : William S. Leet
Publisher : University Of California, Division of Agriculture and Natural Resources; Califorinia Sea Grant
Page : 596 pages
File Size : 42,35 MB
Release : 2001
Category : Nature
ISBN : 9781879906570
This 592-page spiral-bound reference provides a baseline of information for all those involved with managing living marine resources in California and chronicles changes that have occurred in many of the state’s fisheries. Organized by marine ecosystems: bays and estuaries, nearshore and offshore. Includes illustrated species descriptions with details of biological knowledge, fishery history, landings data, population status and references. Also includes sections on marine birds and mammals and appendices containing management considerations (by species), a glossary of technical terms and acronyms and fishing gear illustrations. Jointly produced by the California Sea Grant Extension Program and the California Department of Fish and Game following the passage of the Marine Life Protection Act in January 1999.
Author : Murray D. Dailey
Publisher : Univ of California Press
Page : 952 pages
File Size : 33,47 MB
Release : 1993
Category : Nature
ISBN : 9780520075788
Here is a benchmark study of one significant stretch of the Pacific Ocean, the Southern California Bight. Extending from Point Conception to the Mexican border and out to the 200-mile limit, these waters have never before been investigated in such detail, from so many points of view, by such an eminent group of scientists. The twenty-five expert contributors summarize everything known about the physical, chemical, geological, and biological characteristics of the area in individual chapters; the volume concludes with a synthesis of the information presented. In addition, chapters are devoted to the influence of humans on the marine environment and to the various laws and governmental agencies concerned with protecting it. Because Southern California is so heavily populated and because the ocean is a major recreational area for its people, the information in this unique volume will be invaluable for the region's planners and decisionmakers as well as for all those who study the globe's marine resources and ecology.
Author : Southern California Academy of Sciences
Publisher :
Page : 572 pages
File Size : 42,98 MB
Release : 1994
Category : Science
ISBN :
Author : United States. Environmental Protection Agency. Sediment Oversight Technical Committee
Publisher :
Page : 234 pages
File Size : 20,86 MB
Release : 1992
Category : Environmental protection
ISBN :
This document is a compendium of scientifically valid and accepted methods that can be used to assess sediment quality and predict ecological impacts...the intent here is to provide the most useful overall measures or predictors of ecological impacts currently in use rather than procedures that may have limited application outside of a particular regulatory framework... parag The information provided in the compendium on the relative strengths and weaknesses of the different assessment methods can provide assistance in selecting the appropriate methods.
Author : Abid A. Ansari
Publisher : Springer Science & Business Media
Page : 402 pages
File Size : 46,27 MB
Release : 2010-10-17
Category : Technology & Engineering
ISBN : 9048196256
Eutrophication continues to be a major global challenge to water quality scientists. The global demand on water resources due to population increases, economic development, and emerging energy development schemes has created new environmental challenges to global sustainability. Eutrophication, causes, consequences, and control provides a current account of many important aspects of the processes of natural and accelerated eutrophication in major aquatic ecosystems around the world. The connections between accelerated eutrophication and climate change, chemical contamination of surface waters, and major environmental and ecological impacts on aquatic ecosystems are discussed. Water quality changes typical of eutrophication events in major climate zones including temperate, tropical, subtropical, and arid regions are included along with current approaches to treat and control increased eutrophication around the world. The book provides many useful new insights to address the challenges of global increases in eutrophication and the increasing threats to biodiversity and water quality.
