Download or read book Studying the Biology of Aquatic Animals through Calcified Structures written by Benjamin D. Walther and published by Frontiers Media SA. This book was released on 2020-11-12 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Studying the Biology of Aquatic Animals Through Calcified Structures written by Esteban Avigliano and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Tropical Fish Otoliths Information for Assessment Management and Ecology written by Bridget S. Green and published by Springer Science & Business Media. This book was released on 2009-08-07 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques and theory for processing otoliths from tropical marine fish have developed only recently due to an historic misconception that these organisms could not be aged. Otoliths are the most commonly used structures from which daily, seasonal or annual records of a fish’s environmental history are inferred, and are also used as indicators of migration patterns, home range, spatial distribution, stock structure and life history events. A large proportion of projects undertaken on tropical marine organisms involve removal and processing of calcified structures such as otoliths, statoliths or vertebrae to retrieve biological, biochemical or genetic information. Current techniques and principles have evolved rapidly and are under constant modification and these differ among laboratories, and more particularly among species and within life history stages. Tropical fish otoliths: Information for assessment, management and ecology is a comprehensive description of the current status of knowledge about otoliths in the tropics. This book has contributions from leading experts in the field, encompassing a tropical perspective on daily and annual ageing in fish and invertebrates, microchemistry, interpreting otolith microstructure and using it to back-calculate life history events, and includes a treatise on the significance of validating periodicity in otoliths.
Download or read book Marine Research written by and published by . This book was released on 1969 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Grants Index written by National Institutes of Health (U.S.). Division of Research Grants and published by . This book was released on 1975 with total page 1224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Awards Index written by and published by . This book was released on 1976 with total page 1248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Structure of Calcifying Marine Organisms written by Clara Teniswood and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing levels of carbon dioxide in the atmosphere due to anthropogenic emissions have been shown to alter ocean chemistry. The absorption of carbon dioxide in the ocean increases concentrations of hydrogen ions, carbonic acid and bicarbonate ions, while concentrations of carbonate ions decrease. The pH of the ocean has already dropped from 8.2 to 8.1 since preindustrial times and is predicted to fall further to 7.9 by 2050. Many marine organisms build their external skeletons or shells from calcium carbonate. As both the ocean pH and the availability of dissolved carbonate ions decreases, it is likely that these organisms will find it increasingly difficult to form and maintain their shells. One such group of calcifiers are pteropods, also known as sea butterflies. Common in polar waters, these are small planktonic free-swimming molluscs, which produce shells of aragonite. Pteropods are an integral part of the marine food chain of the Southern Ocean as many organisms, from zooplankton to whales, rely on them as a food source. Therefore, changes in their abundance or distribution could have a substantial flow-on effect for the whole Southern Ocean ecosystem. Another group of important calcifiers are foraminifera, which are simpler unicellular organisms. The species studied in this work makes its shell from low Mg-calcite and resides in the warmer Papua New Guinea waters. Although there have been some studies on the effects of pH on foraminifera and pteropods, there have been no thorough studies on the structure or composition of these calcifiers, an understanding of which is crucial for predicting and measuring how they are affected by changing ocean chemistry. In this work, the structure and mechanical properties of the calcified shells of Limacina helicina antarctica pteropods and Amphistegina lessonii foraminifera are studied. The macro- and micro-structure of these species is investigated using electron microscopy techniques, the composition is analysed using Raman spectroscopy and the mechanical properties are determined using nanoindentation. With the aim of quantifying the effects of ocean acidification, the mechanical properties of pteropods collected in 1998 and 2007 are compared, as well as foraminifera collected at various distances from a carbon dioxide volcanic vent in PNG. These are unique 'natural' experiments in which the samples have been analysed directly after removal from their habitat and thus, do not have the uncertainties, such as adaptation, feeding or life cycle effects, that 'capture and keep' experiments introduce. The distribution of the organic matrix, which is believed to determine the growth of biogenic calcium carbonate, has been mapped, with a rich organic layer discovered in the pteropod shells. This finding provides valuable information on the structure-property relations of these shells and the possible explanations for the presence of this layer are discussed. The detrimental effects and implications of routine chemical sample preparation treatments, such as bleaching, on the mechanical integrity of calcified structures is investigated using electron microscopy, nanoindentation and a custom three point bend system. Finally, the suitability of materials science techniques for quantifying the effects of ocean acidification on calcifiers is evaluated.
Download or read book Ocean Acidification written by National Research Council and published by National Academies Press. This book was released on 2010-09-14 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ocean has absorbed a significant portion of all human-made carbon dioxide emissions. This benefits human society by moderating the rate of climate change, but also causes unprecedented changes to ocean chemistry. Carbon dioxide taken up by the ocean decreases the pH of the water and leads to a suite of chemical changes collectively known as ocean acidification. The long term consequences of ocean acidification are not known, but are expected to result in changes to many ecosystems and the services they provide to society. Ocean Acidification: A National Strategy to Meet the Challenges of a Changing Ocean reviews the current state of knowledge, explores gaps in understanding, and identifies several key findings. Like climate change, ocean acidification is a growing global problem that will intensify with continued CO2 emissions and has the potential to change marine ecosystems and affect benefits to society. The federal government has taken positive initial steps by developing a national ocean acidification program, but more information is needed to fully understand and address the threat that ocean acidification may pose to marine ecosystems and the services they provide. In addition, a global observation network of chemical and biological sensors is needed to monitor changes in ocean conditions attributable to acidification.
Download or read book Marine Research Fiscal Year 1968 written by National Council on Marine Resources and Engineering Development (U.S.) and published by . This book was released on 1969 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Research 1973 written by United States. National Oceanic and Atmospheric Administration and published by . This book was released on 1973 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change 2014 Impacts Adaptation and Vulnerability Global and Sectoral Aspects written by Christopher B. Field and published by Cambridge University Press. This book was released on 2014-12-29 with total page 1149 pages. Available in PDF, EPUB and Kindle. Book excerpt: This latest Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) will again form the standard reference for all those concerned with climate change and its consequences, including students, researchers and policy makers in environmental science, meteorology, climatology, biology, ecology, atmospheric chemistry and environmental policy.
Download or read book Climate Change 2014 Impacts Adaptation and Vulnerability Part A Global and Sectoral Aspects Volume 1 Global and Sectoral Aspects written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2014-12-29 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This latest Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) will again form the standard reference for all those concerned with climate change and its consequences, including students, researchers and policy makers in environmental science, meteorology, climatology, biology, ecology, atmospheric chemistry and environmental policy.
Download or read book Age Determination and Growth in Fish and Other Aquatic Animals written by David C. Smith and published by . This book was released on 1992 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Marine Vertebrate Research in Latin America written by Marcos R. Rossi-Santos and published by Springer. This book was released on 2017-08-10 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the most recent research findings on ecology and conservation of marine vertebrates in Latin America, making use of high technological methods to show readers the diversity of the marine research that has been conducted in these countries over the last decades. The book brings authors from more than 23 institutions of 7 different countries developing the most diverse research aiming at ocean conservation through the ecology of different vertebrate animals, such as whales, dolphins, manatees, turtles, seabirds and fish. This book deals with technological advances and innovation in the ecology and conservation of marine vertebrates in Latin America. This eclectic collection is broad in scope but provides detailed summaries of new methods that are deployed in the study of marine environmental conservation. Key issues revolve around the development and application of educational methodologies in the field of marine vertebrate research, which provide a rational basis for better management of marine environments using modern techniques associated with GIS, satellite tracking, aerial systems, bioacoustics, biogeochemistry, genetics, underwater videography, species photoidentification, molecular biology, trophic ecological methods, ethological methods, and behavioural ecology, among others. Discussion and elucidation of these kinds of techniques are aimed at university-level students and post-graduate researchers. The scope of this volume includes whales, sharks, rays, dolphins, tropical fishes, turtles, manatees as well as aspects of Latin American marine ecosystem conservation. Researchers in this biogeographic region, as well as others involved with marine vertebrate research, will find this work essential reading.
Download or read book Bryozoan Studies 2022 written by Marcus M. Key and published by CRC Press. This book was released on 2023-12-15 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bryozoan Studies 2022 contains nineteen papers presented at the 19th International Conference of the International Bryozoology Association held at Trinity College Dublin in August 2022. Bryozoans are complex and fascinating colonial organisms that range from Cambrian to the present day and which are found in marine and freshwater environments from pole to pole and subtidal to abyssal. Recent tomographic techniques have revolutionised the study of modern and fossil taxa where internal structures are revealed through non-destructive methodologies. Here the internal structure of some Ordovician and Eocene taxa is illustrated through these methods. Phylogenetic studies of bryozoans question the classic classification of the group; here the phylogeny of species from California and Japan is described. Other topics covered are assessments of Recent faunas from Haiti and fossil assemblages from Mexico and the United States. Distributional patterns from the Arctic and New Zealand and the dispersal patterns of bryozoans on rafted pumice and on slipper lobsters are characterised. Further contributions provide descriptions of a rare Permian taxon, clarification of species assigned to the Upper Palaeozoic genus Stenopora, avicularia in Wilbertopora, enigmatic structures in a fenestrate bryozoan, repair structures in trepostomes, and an assessment of skeletonisation in the families of Palaeozoic orders.
Download or read book NOAA Technical Report NMFS written by and published by . This book was released on 1984 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Antarctic Journal of the United States written by and published by . This book was released on 1990 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
