Download or read book Biometric Ecological and Quantitative Metabolic Studies on the Marine Intertidal Snails Littorina Planaxis and L Scutulata written by Wheeler J. North and published by . This book was released on 1953 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Doctoral Dissertations on the Management and Ecology of Fisheries written by Harvey L. Moore and published by . This book was released on 1959 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatise on Marine Ecology and Paleoecology written by Joel W. Iledgpeth and Harry S. Ladd and published by Geological Society of America. This book was released on 1957 with total page 2468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Special Scientific Report written by and published by . This book was released on 1959 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mollusca written by Peter W. Hochachka and published by Academic Press. This book was released on 2014-06-28 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mollusca
Download or read book Large scale Experimental Test of Copper Sulfate as a Control for the Florida Red Tide written by George Armytage Rounsefell and published by . This book was released on 1958 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first large-scale attempt at controlling the red tide was made in the autumn of 1957. About 16 square miles stretching along 32 miles of shoreline from Anclote Key to Pass-a-grille Beach, off St. Petersburg, Florida, were dusted with copper sulfate (CuSO4·5H2O) at about 20 pounds to the acre by crop-dusting planes. The copper very quickly reduced G̲y̲m̲ṉo̲ḏi̲ṉi̲u̲m̲ ḇṟe̲v̲e̲, the red tide organisms, from several million to practically none per liter relieving the area of the respiratory irritation caused by the airborne toxin of G̲. ḇṟe̲v̲e̲. In 2 out of 5 areas the organisms rose again to concentrations lethal to fish in 10 to 14 days after dusting. This method is not recommended for general control, but will give temporary relief in local situations from the airborne toxin
Download or read book Treatise on Marine Ecology and Paleoecology written by National Research Council (U.S.). Committee on a Treatise on Marine Ecology and Paleoecology and published by . This book was released on 1957 with total page 1360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiology of Mollusca written by Karl M. Wilbur and published by Academic Press. This book was released on 2013-10-22 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physiology of Mollusca, Volume II focuses on the physiology of mollusks, as well as feeding, digestion, mechanics of the heart, metabolism, and pigmentation. The selection first offers information on feeding and digestion, including Amphineura, Gastropoda, Bivalvia, anatomy of the gut, movement of food, and digestive diverticula. The text then elaborates on feeding and digestion in cephalopods and heart, circulation, and blood cells. Discussions focus on food and feeding, mechanics of heart and circulation, control of the heart, cardioregulatory substances, and blood cells. The publication considers respiration, molluscan hemoglobin and myoglobin, and molluscan hemocyanins. The text then examines the pigmentation of mollusks, carbohydrate and nitrogen metabolism, physiology of the nervous system, and sense organs. Topics include indole pigments, sugar and polysaccharides, metabolism of nitrogenous compounds, terminal products of nitrogen metabolism in mollusks, and synaptic transmission. The selection is a dependable reference for readers interested in the physiology of mollusks.
Download or read book Biochemistry and Pharmacology of Compounds Derived from Marine Organisms written by Ross F. Nigrelli and published by . This book was released on 1960 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oil Pollution and Marine Ecology written by Anthony Nelson-Smith and published by Springer. This book was released on 1973 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the dozen years in which I have been actively interested in oil pollution, not only has the quantity of petroleum products con sumed in industrially developed nations (and thus the volume of crude oil shipped to them) greatly increased; disastrous accidents, particularly the wreck of Torrey Canyon in the approaches to the English Channel and the blow-out of Well A-21 off Santa Barbara, California, have made the public in general aware for the first time of the implications of their growing appetite for oil and the goods made from it. Concern over the pollution of coastal waters and sea-shores has been expressed ever si nce the 1920s by a small but active band of ornithologists, wildfowlers and seaside hotel-keepers but, even now, the international legislation which their efforts initiated adequately regulates only a fraction of the world's tanker traffic. In Britain, Torrey Canyon sparked off an interest in oil pollution and, by extension, other environmental troubles which had previously been aired only rarely in the mass communications media. Biologists and workers in various technologies were stimulated to carry out a wide variety of investigations both in the field and the laboratory, while even the most laggard member of the oil industry must now feel bound to give some thought to the effect of spills and discharges on human amenity or the natural environment.
Download or read book Contributions from the Scripps Institution of Oceanography written by Scripps Institution of Oceanography and published by . This book was released on 1960 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reprints from various publications.
Download or read book Comprehensive Dissertation Index 1861 1972 Biological sciences biology and zoology written by Xerox University Microfilms and published by . This book was released on 1973 with total page 1240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pollutions marines par les microorganismes et les produits p troliers written by and published by . This book was released on 1965 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biochemical Metabolic and Morphological Responses of the Intertidal Gastropod Littorina Littorea to Ocean Acidification and Increase Temperature written by Sedercor Melatunan and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Future changes to the pH and temperature of the oceans are predicted to impact the biodiversity of marine ecosystems, particularly those animals that rely on the process of calcification. The marine intertidal gastropod Littorina littorea can be used as a model of intertidal organism for investigating the effects of ocean acidification and high temperature, alone and in combination because its ability to be quickly adapt against environmental stressor. In the first study a single species population of L. littorea was used to test for physiological and biochemical effects underpinning organismal responses to climate change and ocean acidification. Compared with control conditions, snails decreased metabolic rates by 31% in response to elevated pCO2 while by 15% in response to combined pCO2 and temperature. Decreased metabolic rates were associated with metabolic depression, a strategy to match oxygen demand and availability, and an increase in end-product metabolites in the tissue under acidified treatments, indicating an increased reliance on anaerobic metabolism. This study also showed that anthropogenic alteration of CO2 and temperature may also lead to plastic responses, a fundamental mechanism of many marine gastropods to cope environmental variability. At low pH and elevated temperature in isolation or combined showing lower shell growth than individuals kept under control conditions. Percentage change in shell length and thicknesses was also lower under acidified and temperature in isolation or combined than control condition, making shells were more globular and desiccation rates were higher. Further studies to broader latitudinal ranges for six populations of L. littorea showed that shell growth decreased in all six populations under elevated pCO2 compared to control snails particularly those at range edges. Elevated pCO2 also affected to the reduction of shell length and width that causing shell aspect ratio to increase across latitudinal gradients except individuals from Millport, UK. Percentage changes of aperture width and aperture area were also decrease under elevated pCO2 with greater reduction of aperture area were found at populations in the mid-ranges which is assumed this response might be linked to local adaptation of the individual to microclimatic conditions. This study also showed that metabolic rates were negatively affected by high pCO2 and show non-linear trend across latitudinal gradients in compared to individual kept under normal pCO2 conditions. Metabolomic analysis showed that two northern populations of Trondheim and TromsØ were distinct from other populations when exposed to low temperature (15 °C) with elevated pCO2 due to, in part, high concentrations of thymine, uracil, valine and lysine. A similar separation also occurred under medium (25 °C) and high (35 °C) temperature exposure in which one of northern population (Trondheim) was distinct from other populations and had lower concentrations of alanine, betaine and taurine while higher of valine. These results suggest that populations at northern latitudes may apply different ionic transport mechanisms under elevated pCO2 and elevated temperatures and those populations are likely to vary in terms of their physiological responses to this environmental challenge.
Download or read book Comprehensive Dissertation Index 1861 1972 Author index written by Xerox University Microfilms and published by . This book was released on 1973 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Colour Polymorphism in the Two Intertidal Snails Littorina Saxatilis and L Fabalis written by Anette Ekendahl and published by . This book was released on 1997 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
