Download or read book GLOBEC Northeast Pacific Analyses Linkages Between Cetaceans and Oceanographic Features written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Associations between cetacean distributions, oceanographic features and bioacoustic backscatter were examined during two process cmises in the northern California Current System (CCS) during late spring and summer 2000. Line-transect surveys of cetaceans were conducted across the shelf and slope, from Newport, Oregon to Crescent City, California, in conjunction with surveys of ocean and ecosystem structure. Occurrence patterns (presencelabsence) of 4 cetacean species were compared with hydrographic and ecological variables (e.g., sea surface salinity, SST, thermocline depth, halocline depth, chlorophyll maximum, distance to the center of the equatorward jet, distance to the upwelling front, and acoustic backscatter at 38, 120, 200 and 420 kHz). Using a multiple logistic regression model, 60.2% and 94.4% of the variation in occurrence pallems of humpback whales during spring and summer, respectively, were explained. For harbor porpoise, the model explained 79.2% and 70.1% of the variation in their occurrence pattems during June and Auqust, respectively. The responses of cetaceans to upwellinq processes were seasonally and spatially specific.
Download or read book Cetacean Distribution in Ecuador written by Julia Elizabeth O'Hern and published by . This book was released on 2013 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Five line transect surveys for marine mammals were conducted offshore of mainland Ecuador and the Galápagos Islands from 2008-2011. These data were used in conjunction with MODIS (Moderate Resolution Imaging Spectroradiometer) observations of ocean color and sea surface temperature (SST) to assess spatial and temporal relationships between surface oceanographic features and cetacean distribution within the Eastern Equatorial Pacific (EEP). Results from this study indicated that oceanographic processes affected cetacean distribution on inter-annual, seasonal, and weekly to monthly time scales. The spatial scales on which these processes affect cetacean distribution are small, the smallest associations being found at 4 km2 bin sizes, as well as 9 km2 and 36 km2 bin sizes. By utilizing ocean color and SST data from the MODIS instrument and analyzing variability of these parameters in addition to average concentration, cetacean distribution within the region was related to the locations of frontal boundaries. Cetaceans were grouped into two categories based on the trophic level and relative depths at which they forage. Cetaceans feeding nearer the ocean surface and lower on the trophic scale were generally found in cooler waters of higher average chlorophyll concentration and elevated variability. Those cetaceans feeding higher on the trophic scale and lower in the water column (mesopelagic and bathypelagic depths) were sighted within relatively warmer waters of reduced temperature variability near areas of high chlorophyll variability (though less variable and lower in average chlorophyll than surface feeding cetaceans), with little spatial and temporal lag between peak surface chlorophyll concentration and cetacean presence. The EEP is a biologically productive region with many competing economic and environmental interests. Ecuador is home to one of the largest artisenal fishing fleets in South America, and entanglement of various cetacean species has been a known issue for several decades (Félix and Haase, 2006; Castro and Rosero, 2010). Seismic exploration, shipping, and tourism are also found on the busy waterways surrounding both mainland Ecuador and the archipelago. The results of this study provide additional insight into the mesoscale processes affecting the distribution and habitat use of cetaceans within the EEP and South American waters and to support ongoing ecosystem management efforts. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/148305
Download or read book U S GLOBEC Biological and Physical Studies of Plankton Fish and Higher Trophic Level Production Distribution and Variability in the Northeast Pacific written by Harold P. Batchelder and published by . This book was released on 2005 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oceanic Abstracts written by and published by . This book was released on 1996 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Stocks of Whales written by Neil Alison Mackintosh and published by . This book was released on 1965 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Small and Mesoscale Processes and Their Impact on the Large Scale written by Hans van Haren and published by . This book was released on 2004 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Protected Areas for Whales Dolphins and Porpoises written by Erich Hoyt and published by Earthscan. This book was released on 2012 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Erich Hoyt's handbook is an admirable, timely and highly welcome contribution.'Michael Stachowitsch, Marine EcologyWhat does it mean to save the whales if their habitat is left unprotected? Marine Protected Areas for Whales, Dolphins and Porpoises is the definitive handbook on this pressing issue and the first to bridge the gap between the disciplines of marine protected areas and cetacean conservation. It launches a new chapter in cetacean conservation with its investigation into the crucial habitat needs and protection requirements of some 84 species.The author, one of the world's foremost experts in this field, takes you around the world to investigate the promising results of the latest conservation research and the strategies for obtaining marine protected areas in coastal waters and on the high seas, using national legislation and regional and international conventions. This is an essential introduction, guide and reference work for those working to ensure a future for whales and dolphins.
Download or read book Marine Ecosystems and Global Change written by John G. Field and published by Oxford University Press on Demand. This book was released on 2010-02-11 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global changes, including climate change and intensive fishing, are having significant impacts on the world's oceans. This book advances knowledge of the structure and functioning of marine ecosystems and their major sub-systems, and how they respond to physical forcing.
Download or read book The Marine Mammals of the Gulf of Mexico written by Bernd G. Würsig and published by W. L. Moody JR. Natural Histor. This book was released on 2000 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given in honor of District Governor Hugh Summers and Mrs. Ahnise Summers by the Rotary Club of Aggieland with matching support from the Sara and John H. Lindsey '44 Fund, Texas A & M University Press, 2004.
Download or read book Deep Survival Who Lives Who Dies and Why written by Laurence Gonzales and published by W. W. Norton & Company. This book was released on 2004-10-17 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Unique among survival books... stunning... enthralling. Deep Survival makes compelling, and chilling, reading."—Penelope Purdy, Denver Post In ?Deep Survival?, Laurence Gonzalez combines hard science and powerful storytelling to illustrate the mysteries of survival, whether in the wilderness or in meeting any of life's great challenges. This gripping narrative, the first book to describe the art and science of survival, will change the way you see the world. Everyone has a mountain to climb. Everyone has a wilderness inside.
Download or read book Ocean literacy for all a toolkit written by Santoro, Francesca and published by UNESCO Publishing. This book was released on 2017-12-18 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Ecosystems of the North Pacific written by North Pacific Marine Science Organization, North Pacific Ecosystem Status Working Group Staff and published by Sidney, B.C. : North Pacific Marine Science Organization. This book was released on 2004 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Anthropogenic Litter written by Melanie Bergmann and published by Springer. This book was released on 2015-06-01 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes how man-made litter, primarily plastic, has spread into the remotest parts of the oceans and covers all aspects of this pollution problem from the impacts on wildlife and human health to socio-economic and political issues. Marine litter is a prime threat to marine wildlife, habitats and food webs worldwide. The book illustrates how advanced technologies from deep-sea research, microbiology and mathematic modelling as well as classic beach litter counts by volunteers contributed to the broad awareness of marine litter as a problem of global significance. The authors summarise more than five decades of marine litter research, which receives growing attention after the recent discovery of great oceanic garbage patches and the ubiquity of microscopic plastic particles in marine organisms and habitats. In 16 chapters, authors from all over the world have created a universal view on the diverse field of marine litter pollution, the biological impacts, dedicated research activities, and the various national and international legislative efforts to combat this environmental problem. They recommend future research directions necessary for a comprehensive understanding of this environmental issue and the development of efficient management strategies. This book addresses scientists, and it provides a solid knowledge base for policy makers, NGOs, and the broader public.
Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.
Download or read book The Journal of Cetacean Research and Management written by and published by . This book was released on 2005 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book YOUMARES 9 the Oceans Our Research Our Future written by Simon Jungblut and published by Springer Nature. This book was released on 2020-01-01 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book summarizes peer-reviewed articles and the abstracts of oral and poster presentations given during the YOUMARES 9 conference which took place in Oldenburg, Germany, in September 2018. The aims of this book are to summarize state-of-the-art knowledge in marine sciences and to inspire scientists of all career stages in the development of further research. These conferences are organized by and for young marine researchers. Qualified early-career researchers, who moderated topical sessions during the conference, contributed literature reviews on specific topics within their research field. .
Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1972-09 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
