Tag: Freshwater

Free Download John M. Legler, "The Turtles of Mexico: Land and Freshwater Forms"
English | ISBN: 0520268601 | 2013 | 416 pages | EPUB | 41 MB
The Turtles of Mexico is the first comprehensive guide to the biology, ecology, evolution, and distribution of more than fifty freshwater and terrestrial turtle taxa found in Mexico. Legler and Vogt draw on more than fifty years of fieldwork to elucidate the natural history of these species. The volume includes an extensive introduction to turtle anatomy, taxonomy, phylogeny, biogeography, and physiology. A key to the turtles of Mexico is included along with individual species accounts featuring geographic distribution maps and detailed color illustrations. Specific topics discussed for each species include habitat, diet, feeding behavior, reproduction, predators, parasites, growth and ontogeny, sexual dimorphism, growth rings, economic use, conservation, legal protection, and taxonomic studies.

Free Download Ana G. Cabado, "New Trends in Marine and Freshwater Toxins: Food and Safety Concerns "
English | ISBN: 1614703248 | 2012 | 403 pages | PDF | 7 MB
Marine and freshwater biotoxins are a well-known problem in food safety, mainly for filter-feeding mollusks and for freshwater aquaculture. This is a challenging matter since, in recent years, toxic algal blooms seems to grow in frequency and duration, leading to longer closure of harvesting areas, disruption in trade, mortality in farmed fish and a growing concern in producers, consumers and health authorities. Unfortunately, in recent years toxins from far latitudes are emerging, leading to new human health problems. Research and exhaustive knowledge of a problem makes it easier to draw a scenario where the best management strategies are gathered. This book combines all if the information related to food-borne illness associated with marine or freshwater biotoxins, the anthropogenic and environmental factors that cause the appearance of toxic episodes and all available analytical procedures for phycotoxins detection.

Free Download R.M. McDowall, "New Zealand Freshwater Fishes: an Historical and Ecological Biogeography"
English | 2010 | pages: 462 | ISBN: 9048192706, 9400732902 | PDF | 10,9 mb
In many ways, this book is the culmination of more than four decades of my exp- ration of the taxonomy, biogeography and ecology of New Zealand’s quite small freshwater fish fauna. I began this firstly as a fisheries ecologist with the New Zealand Marine Department (then responsible for the nation’s fisheries research and mana- ment), and then with my PhD at the Museum of Comparative Zoology at Harvard University, Cambridge, MA, USA in the early-mid 1960s. Since then, employed by a series of agencies that have successively been assigned a role in fisheries research in New Zealand, I have been able to explore very widely the natural history of that fauna. Studies of the fishes of other warm to cold temperate southern lands have followed, particularly southern Australia, New Caledonia, Patagonian South America, the Falkland Islands, and South Africa and, in many ways, have provided the rather broader context within which the New Zealand fauna is embedded in terms of geography, phylogeny, and evolutionary history, and knowing this context makes the patterns within New Zealand all the clearer. An additional stream in these studies, in substantial measure driven by the beh- ioural ecology of these fishes round the Southern Hemisphere, has been exploration of the role of diadromy (regular migrations between marine and freshwater biomes) in fisheries ecology and biogeography, and eventually of diadromous fishes wor- wide.

Free Download Small-scale Freshwater Toxicity Investigations: Toxicity Test Methods By Christian Blaise, Jean-François Férard (auth.), Christian Blaise, Jean-François Férard (eds.)
2005 | 552 Pages | ISBN: 140203119X | PDF | 5 MB
Developed, developing and emerging economies worldwide are collectively contributing multiple stresses on aquatic ecosystems by the release of numerous contaminants. This in turn demands that basic toxicological information on their potential to harm living species be available. Hence, environmental protection programs aimed at preserving water quality must have access to comprehensive toxicity screening tools and strategies that can be applied reliably and universally. While a good number of toxicity testing procedures and hazard assessment approaches have been published in the scientific literature over the past decades, many are wanting in that insufficient detail is available for users to be able to fully understand the test method or scheme and to be able to reproduce it successfully. Even standardized techniques published in recognized international standard organization documents are often lacking in thoroughness and minutiae. Paucity of information relating to biological test methods may be consequent and trigger several phenomena including generation of invalid data and resulting toxicity measurements, erroneous interpretation and decision-taking with regards to a particular chemical or environmental issue, or simply abandonment of testing procedures. Clearly, improperly documented toxicity testing methods can be detrimental to their promotion and use, as they open the doorway to unnecessary debate and criticism as to their raison d’être. Furthermore, this situation can indirectly contribute to delaying, minimizing or eliminating their application, thereby curtailing the important role toxicity testing plays in the overall protection and conservation of aquatic ecosystems.

Free Download Aquatic Toxicology in Freshwater: The Multiple Biomarker Approach by Muhammed Atamanalp, Gonca Alak, Arzu Uςar, Veysel Parlak
English | PDF EPUB (True) | 2024 | 189 Pages | ISBN : 3031566688 | 9.1 MB
This book will provide an important source of practical information on the history of toxicology, the ways in which pollutants reach model organisms used in toxicology, sampling methods for research, mechanisms of toxicity and responses of aquatic organisms to toxic agents, as well as the use of therapeutic agents in current approaches. Determining the importance of environmentally friendly substances on antioxidant defense is an obvious area of future research.

Free Download Freshwater and Marine Ecology by Ulrich Sommer
English | PDF EPUB (True) | 2024 | 444 Pages | ISBN : 3031424581 | 72.8 MB
Freshwater and Marine Ecology is an introduction to the field of aquatic ecology, integrating the conceptually and methodologically widely overlapping fields of limnology and biological oceanography. It is structured like most textbooks of general ecology, leading from more elemental entities (individuals having to cope with their environment) to increasingly overarching entities, from populations over communities and ecosystems to the biogeochemistry of the entire planet and, finally, an overview over the major human impacts on the aquatic components of the earth system. The book provides examples for all major theoretical concepts of general ecology while the usual ecology textbooks have a strong terrestrial bias and rely only on few aquatic examples. This book takes the contrasting approach, motivated by the fact the fact that life originated from aquatic systems and that surface waters cover more than 70% of the Earth’s surface. The choice of studies used as examples in Freshwater and Marine Ecology provides a balanced mix of freshwater and marine studies, of field observations, experimental and modeling studies. The readers are confronted with very recent work leading to the forefront of contemporaneous research but also with classic studies which laid the foundations of theory development in the field. Freshwater and Marine Ecology is a comprehensive text ideally serving for undergraduate courses in biological oceanography, limnology, and ecology, but also for advanced students, teachers and scientists who had limited exposure to aquatic sciences and/or ecology during their studies.

Free Download Freshwater Fishing Australia – Issue 182 – January-March 2024
English | 86 pages | True PDF | 32.1 MB

Free Download Ecology of Freshwater Nematodes
by Walter Traunspurger
English | 2021 | ISBN: 1789243637 | 399 Pages | True ePUB/PDF

Free Download Breeding and Culture of Freshwater Ornamental Fish
by Archana Sinha
English | 2021 | ISBN: 9390512239 | 254 Pages | True PDF | 40 MB

Free Download P. S. Maitland, "British Freshwater Fish"
English | 2012 | pages: 766 | ISBN: 0007308507 | EPUB | 28,1 mb
An in-depth look at the fish that inhabit the fresh waters of Britain and Ireland. These include famous members of the salmon family, such as the Atlantic Salmon and the Brown Trout, and the obscure whitefish, species of which are confined to just a few lakes. This edition is exclusive to newnaturalists.com