Small Autonomous Landers for Studying the Community Ecology of Nearshore Submarine Canyons - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Small Autonomous Landers for Studying the Community Ecology of Nearshore Submarine Canyons write by Ashley Nicoll. This book was released on 2021. Small Autonomous Landers for Studying the Community Ecology of Nearshore Submarine Canyons available in PDF, EPUB and Kindle. Nearshore submarine canyons are unique features that bring the deep sea close to shore, potentially functioning as highways connecting shallow and deep-sea ecosystems. To study their ecology, we developed two autonomous lander systems: a 2-sphere Picolander for exploratory deployments ( 3 days) and a 3-sphere Nanolander for longer deployments ( 1 week). Both landers were outfitted with a camera and lights system and a ZebraTech environmental sensor and collected paired physical and biological time series. Eleven lander deployments were completed ranging in length from 1-13 days at depths of 90-500 m, allowing assessment of how seafloor community diversity and composition changed with depth and time of day. We found that communities at 100 and 500 m were distinct from all other depths while the 300 m community was transitional between these depths and had the highest diversity, despite unexpectedly high turbidity. Additionally, we recorded clear diurnal patterns in fishes deeper than 300 m, as well as vertical migration of larval flatfish. This study also aimed to document the number and area of small submarine canyons off the coast of California and determine the extent of government protection of both large and small canyons. Small canyons were defined as features with a minimum depth of 200 m and incised 100 m into the slope. Applying this, 23 small canyons were identified, with features concentrated on the Central and Southern coast. By area, 27% of large canyons and 23% of small canyons were protected, with the inshore reaches of canyons receiving more protection than offshore. Because landers collect paired biological and physical data in hard to access areas, they may serve as powerful tools to inform management of these poorly studied deep-water habitats.
Mass Transport, Gravity Flows, and Bottom Currents
Mass Transport, Gravity Flows, and Bottom Currents - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Mass Transport, Gravity Flows, and Bottom Currents write by G. Shanmugam. This book was released on 2020-10-31. Mass Transport, Gravity Flows, and Bottom Currents available in PDF, EPUB and Kindle. Mass Transport, Gravity Flows, and Bottom Currents: Downslope and Alongslope Processes and Deposits focuses solely on important downslope and alongslope processes. The book provides clear definitions and characteristics based on soil mechanics, fluid mechanics and sediment concentration by volume. It addresses Slides, Slumps, and Debris Flows, Grain Flows, Liquefied/Fluidized Flows, and Turbidity Currents, Density plumes, Hyperpycnal Flows, the Triggering Mechanisms of Downslope Processes, Bottom Currents, and Soft-Sediment Deformation Structures. The mechanics of each process are described in detail and used to provide empirically-driven categories to help recognize these deposits it the rock record. Case studies clearly illustrate of the problems inherent in recognizing these processes in the rock record, and potential solutions are provided alongside future avenues of research. An appendix also provides step-by-step guidance in describing and interpreting sediments. Comprehensively addresses modern downslope and alongslope processes, including definitions and mechanisms Provides key criteria for the recognition of depositional facies in the rock record Includes case studies to illustrate each downslope and alongslope process Identifies key problems and potential solutions for future research Uses pragmatic, empirical, data-driven interpretations to revise conventional facies models
The First Global Integrated Marine Assessment
The First Global Integrated Marine Assessment - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The First Global Integrated Marine Assessment write by United Nations. This book was released on 2017-04-17. The First Global Integrated Marine Assessment available in PDF, EPUB and Kindle. The World Ocean Assessment - or, to give its full title, The First Global Integrated Marine Assessment - is the outcome of the first cycle of the United Nations' Regular Process for Global Reporting and Assessment of the State of the Marine Environment, including Socioeconomic Aspects. The Assessment provides vital, scientifically-grounded bases for the consideration of ocean issues, including climate change, by governments, intergovernmental agencies, non-governmental agencies and all other stakeholders and policymakers involved in ocean affairs. Together with future assessments and related initiatives, it will support the implementation of the recently adopted 2030 Agenda for Sustainable Development, particularly its ocean-related goals. Moreover, it will also form an important reference text for marine science courses.
Exploration of the Seas
Exploration of the Seas - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Exploration of the Seas write by National Research Council. This book was released on 2003-11-04. Exploration of the Seas available in PDF, EPUB and Kindle. In the summer of 1803, Thomas Jefferson sent Meriwether Lewis and William Clark on a journey to establish an American presence in a land of unqualified natural resources and riches. Is it fitting that, on the 200th anniversary of that expedition, the United States, together with international partners, should embark on another journey of exploration in a vastly more extensive region of remarkable potential for discovery. Although the oceans cover more than 70 percent of our planet's surface, much of the ocean has been investigated in only a cursory sense, and many areas have not been investigated at all. Exploration of the Seas assesses the feasibility and potential value of implementing a major, coordinated, international program of ocean exploration and discovery. The study committee surveys national and international ocean programs and strategies for cooperation between governments, institutions, and ocean scientists and explorers, identifying strengths, weaknesses, and gaps in these activities. Based primarily on existing documents, the committee summarizes priority areas for ocean research and exploration and examines existing plans for advancing ocean exploration and knowledge.
Advances in Cephalopod Science: Biology, Ecology, Cultivation and Fisheries
Advances in Cephalopod Science: Biology, Ecology, Cultivation and Fisheries - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Advances in Cephalopod Science: Biology, Ecology, Cultivation and Fisheries write by . This book was released on 2014-05-26. Advances in Cephalopod Science: Biology, Ecology, Cultivation and Fisheries available in PDF, EPUB and Kindle. Advances in Cephalopod Science: Biology, Ecology, Cultivation and Fisheries—volume 67 in the Advances in Marine Biology series—addresses major themes of growing research interest in the field of cephalopod research. The book is composed of four chapters incorporating the latest advances in biology, ecology, life cycles, cultivation, and fisheries of cephalopods. Each chapter is written by a team of internationally recognized authorities to reflect recent findings and understanding. The book represents a breakthrough contribution to the field of cephalopod science. Advances in Marine Biology was first published in 1963 under the founding editorship of Sir Frederick S. Russell, FRS. Now edited by Michael P. Lesser, with an internationally renowned editorial board, the serial publishes in-depth and up-to-date reviews on a wide range of topics that appeal to postgraduates and researchers in marine biology, fisheries science, ecology, zoology, and biological oceanography. Eclectic volumes in the series are supplemented by thematic volumes on such topics as the biology of calanoid copepods. Covers cephalopod culture Covers environmental effects on cephalopod population dynamics Covers biology, ecology and biodiversity of deep-sea cephalopods Covers life stage transitions in successful cephalopod life strategies
