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Evaluation Of Wet Testing As An Indicator Of Aquatic Health In Effluent-dominated Streams

RRP $54.95

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This project evaluated the quality of data needed to determine relationships between chronic Whole Effluent Toxicity (WET) test results and in-stream biological condition. A data quality objectives approach was used, which included several proposed measurement quality objectives (MQOs) that specified desired precision, bias, and sensitivity of methods used. Six facilities (four eastern and two western U.S.) participated in this study, all having design effluent concentrations > 60% of the stream flow. In accordance with a Quality Assurance Project Plan most of the facilities completed four quarters of chronic Ceriodaphnia dubia, and Pimephales promelas (fathead minnow) WET tests, and three quarters of Selenastrum capricornutum (green algae) WET testing following the most recent USEPA methods. Several other WET tests were conducted to address MQOs including splits, duplicates, and blind positive and negative controls. Macroinvertebrate, fish, and periphyton bioassessments were conducted at multiple locations up and downstream of each facility following the most recent USEPA Office of Water bioassessment protocols.
Test acceptance criteria were met for most WET tests, however, this study demonstrated the need to incorporate other MQOs in a full study (such as minimum and maximum percent significant differences and performance on blind samples) to ensure accurate interpretation of effluent toxicity. More false positives, lower test endpoint (i.e., higher toxicity), and more "failed" (non-compliant) tests were observed using No Observed Effect Concentrations (NOEC) as compared to IC25s (concentration causing >= 25% decrease in organism response compared to controls). Algae tests often yielded the most effluent toxicity in this study, however, this test was most susceptible to false positives and high inter-laboratory variability. WET test results exhibited few relationships with bioassessment results, even when incorporating actual effluent dilution. Neither frequency of WET non-compliance nor magnitude of WET were clearly related to differences in biological condition up and downstream of a discharge for the most part. Macroinvertebrate assessments were most able to discriminate small changes downstream of the effluent, followed by periphyton and then fish. The sampling methods used were robust but a full study should collect more field replicates up and downstream of each discharge to increase detection power. Macroinvertebrate and periphyton assessments together appeared to be sufficient to address project objectives. Fish assessments could be useful as well but would entail more effort and cost per site than expended in this project, to be useful.


Reproductive Biotechnology In Finfish Aquaculture

RRP $28.55

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The successful reproduction of cultured brood stock is essential to the sustainable aquaculture of aquatic organisms. This book describes recent advances in the field of finfish reproductive biotechnology. The chapters in this volume are written by eminent scientists who review the progress and assess the status of biotechnology research that is applicable to the reproduction of finfish species for aquaculture. A wide range of topics is included starting with broodstock technologies such as broodstock genetics, broodstock nutrition, environmental control of maturation and impacts of stress on broodstock, gametes and progeny.


The volume includes technologies for induction of ovulation and spermiation using synthetic hypothalamic peptides. Gamete technologies which are described include cryopreservation, chromosome set manipulation, disease prevention and control for gametes and embryos and the development of transgenic fish with enhanced production characteristics. Genetic and endocrine technologies for the production of monosex male and female fish stocks are also described.


The closing chapter summarizes the discussion of each topic at the workshop, provides recommendations to industry and describes priorities of research and development. Researchers as well as teaching faculty in the aquaculture field will find this volume of great value.


Medical Emergencies Caused By Aquatic Animals 2017

RRP $299.99

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The present book is intended as a reference guide for emergency and ambulatory care medicine, providing essential information on the most important problems and incidents caused by venomous, poisoning and traumatic marine and freshwater animals. Indeed, though emergencies caused by aquatic animals are becoming increasingly common, there are few reference books devoted to providing medical guidance on them. The book includes a wealth of original images of injuries caused by aquatic animals, while the text covers the current state knowledge on the subject, including the identification of the animals, the clinical aspects of the envenomation/poisonings/injuries, first aid and emergency care, main treatment alternatives and a typical case representing each group of animals. Chapters are organized according to zoological groups: Marine and Freshwater Invertebrates (Porifera, Cnidarians, Annelida, Mollusks, Echinodermata) and Marine and Freshwater Vertebrates (Fish and Reptiles). Medical Emergencies Caused By Aquatic Animals: A Zoological and Clinical Guide is intended for students and professionals in Medicine (Dermatology, Tropical Medicine, Infectious Diseases and Emergency Medicine) and the Biological Sciences (Zoology and Ecology), as well as to practicing professionals working in coastal or freshwater areas.



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Aqua Zero Books

Bottled Water Drink Water Water H2O
Aqua Water Park Diving Underwater
Ocean Cave Diving Waterproof Water Park
Swimming Pool Softened Water Water Air Harvesting Water

Aqua Zero