Download or read book Predation Recruitment and Reef Development of Hooked Mussels Ischadium Recurvum and Eastern Oysters Crassostrea Virginica on Fabricated and Natural Oyster Reefs written by Caleb Paul Bourgeois and published by . This book was released on 2015 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Predation on the Eastern Oyster Crassostrea Virginica on Intertidal Reefs Affected by Recreational Boating written by Jennifer Lorraine Stiner and published by . This book was released on 2006 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Together, these findings document ecological implications of dead margins on C. virginica reefs and reinforce the urgent need for enhanced regulations and restoration. If the intensity of recreational boating remains unregulated, dead margins will continue to increase. Thus, in order to maintain the diversity and productivity of Mosquito Lagoon, it is crucial to fully understand how dead margins alter the biogenic habitat and biotic communities of oyster reefs.

Download or read book Early Recruitment of Crassostrea Virginica to Restored and Natural Oyster Reefs in the Western Mississippi Sound written by Leah Margaret Morgan and published by . This book was released on 2019 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The eastern oyster (C. virginica) is a foundation species that improves water quality, protects shorelines, provides refuge for other organisms, and contributes to commercial fisheries. Successful early recruitment of eastern oyster is vital for resupplying adult populations in the face of habitat loss. Coastal oyster populations are challenged by freshwater input, hypoxia, predation and overfishing. Consequently, substantial efforts have been dedicated toward oyster restoration within the northern Gulf of Mexico. The overall objective of this study was to consider the role and importance of early recruitment to oyster restoration in western Mississippi Sound. During the summer 2018 recruitment period, we quantified larval oyster supply and spat settlement at eight sites varying in region (inshore vs offshore) and background substrate (restored limestone, restored relic shell, historically unrestored substrates). Larvae were quantified relative to life cycle stage in addition to region, sampling month, and restoration status. Settlement metrics included abundance of early and late size classes, spar area cover, maximum individual size, geometric mean size, barnacle area cover, and spat scar abundance, and were compared relative to variation in background substrate, tile surface, predator exclusion treatment, region, and month. Larval densities varied among sites and increased throughout the summer. D-stage densities were highest in September, and veliger densities were higher in the second half of the sampling season. Spat settlement aligned with patterns of larval density, and was higher in more protected refuge treatments. This study illustrates how recruitment studies can assist with management decisions related to restoring this critical habitat.

Download or read book Examining the Effect of Interstitial Space on Eastern Oysters Crassostrea Virginica written by and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Global oyster populations have decreased by as much as 99% in the past century. Oysters are known ecosystem engineers, providing benthic habitat for macrofauna, linking benthic and pelagic food webs, improving water quality, and mitigating shoreline erosion. Restoration efforts are critical in re-establishing native oyster populations. In the Chesapeake Bay, where oyster loss is primarily due to severe over harvest, artificial substrates with geometric shapes are widely used in restoration efforts. However, natural oyster reefs form emergent shapes with a high degree of aggregation and many interstitial spaces (three-dimensional volumetric spaces between oysters within a reef). The lack of interstitial space in artificial substrates contrasted with the presence of interstitial spaces in natural reefs led to the research question: Is there an amount of interstitial space which facilitates oyster recruitment and survival? Previous studies have hypothesized the importance of interstitial space in oyster reefs; however, current research lacks practical and effective methodology for measuring interstitial space of any ecosystem. We implemented a field study to observe the direct effect of interstitial space on oyster recruitment and survival using a concrete artificial oyster reef. Additionally, we used photogrammetry and three-dimensional digital modeling to develop a method for measuring interstitial space of the concrete artificial oyster reef used in the field. We found there to be significantly greater oyster recruitment and survival on substrates with 50 - 100 cm3 interstitial space per 50 mm2 surface area. This is the first study to directly examine the effect of interstitial space on oyster recruitment and survival. This is also the first study to develop a practical methodology for measuring interstitial space which may be transferred for use in other systems, as photogrammetry and three-dimensional modeling are not limited to oyster reef ecosystems. Filling these knowledge gaps will have positive impacts on oyster reef restoration and other ecosystems in which interstitial space is hypothesized to play a critical role.

Download or read book Recruitment of the Eastern Oyster Crassostrea Virginica in Response to Settlement Cues and Predation written by Kristin Michelle Riddle and published by . This book was released on 2009 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Substrate Material on Oyster crassostrea Virginica Reef Health and Development written by Cole Taylor Tomlinson and published by . This book was released on 2017 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diet for a Sustainable Ecosystem written by Benjamin E. Cuker and published by Springer. This book was released on 2020-08-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores a specific ecosystem in depth, in order to weave a story built on place and history. It incorporates the theme of a journey to help reveal the environment-human-health-food system-problem. While drawing on a historical approach stretching back to the American colonial era, it also incorporates more contemporary scientific findings. By crafting its story around a specific place, the book makes it easier for readers to relate to the content, and to subsequently use what they learn to better understand the role of food systems at the global scale.

Download or read book Zooarchaeology written by Elizabeth J. Reitz and published by Cambridge University Press. This book was released on 2008-01-14 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book serves as an introductory text for students interested in identification and analysis of animal remains from archaeological sites. This revised edition reflects developments in zooarchaeology that have occurred during the past decade. It includes new sections on enamel ultrastructure and incremental analysis, stable isotyopes and trace elements, ancient genetics and enzymes, environmental reconstruction, people as agents of environmental change, applications of zooarchaeology in animal conversation and heritage management, and a discussion of issues pertaining to the curation of archaeofaunal materials.

Download or read book Bivalve Filter Feeders written by Richard F. Dame and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bivalve filter-feeding mollusks are important components of coastal ecosystems because they remove large quantities of suspended material from the water and excrete abundant amounts of reactive nutrients. These animals are also major prey for numerous predators including birds, fish, mammals, and invertebrates; furthermore, they are significant food resources for humans. While studies on the organismic and population level have dominated bivalve ecology, the recent focus on the ecosystem roles of filter feeding systems has led to larger-scale investigations. With this approach the specific topics of physiology, grazing, predation, nutrient cycling, physical environment, computer simulation modeling, and environmental management are combined into a meaningful whole.

Download or read book Risk Assessment of Vibrio Parahaemolyticus in Seafood written by World Health Organization and published by . This book was released on 2011-01-01 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vibrio parahaemolyticus are common causes of diarrhoeal disease worldwide. These marine micro-organisms, native in estuarine waters globally, concentrate in the gut of filter-feeding molluscan shellfish, such as oysters, clams and mussels. Raw and undercooked seafood, including finfish, represent the principal vehicle of transmission to humans. This volume considers the applicability of an assessment of the public health impact of raw oyster consumption, developed in one country, to assess the public health risk associated with the consumption of raw oysters harvested in other countries where different growing and harvesting scenarios might exist. The approach is also applied to bloody clams and finfish to establish if such a risk assessment can also be adapted to other types of shellfish and finfish. This work is therefore divided in three parts focusing on (i) risk assessment of Vibrio parahaemolyticus in raw oysters, (ii) risk assessment of Vibrio parahaemolyticus in bloody clam and (iii) risk assessment of Vibrio parahaemolyticus in finfish. As well as providing insights on the risks associated with consumption of these commodities, the work also addresses how to make maximum use of existing and/or limited resources. This volume and others in the Microbiological Risk Assessment Series contain information that is useful to both risk assessors and risk managers, including international scientific committees, the Codex Alimentarius Commission, governments and food regulatory agencies, scientists, food producers and industries and other people or institutions with an interest in the area of microbiological hazards in foods, their impact on human health and food trade and their control.

Download or read book Gulf of Maine Georges Bank written by and published by . This book was released on 1981 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book San Francisco Bay National Estuarine Research Reserve written by and published by . This book was released on 2002 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vertebrate Taphonomy written by R. Lee Lyman and published by Cambridge University Press. This book was released on 1994-07-07 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taphonomy studies the transition of organic matter from the biosphere into the geological record. It is particularly relevant to zooarchaeologists and paleobiologists, who analyse organic remains in the archaeological record in an attempt to reconstruct hominid subsistence patterns and paleoecological conditions. In this user-friendly, encyclopedic reference volume for students and professionals, R. Lee Lyman, a leading researcher in taphonomy, reviews the wide range of analytical techniques used to solve particular zooarchaeological problems, illustrating these in most cases with appropriate examples. He also covers the history of taphonomic research and its philosophical underpinnings. Logically organised and clearly written, the book is an important update on all previous publications on archaeological faunal remains.

Download or read book Sampling in Archaeology written by Clive Orton and published by Cambridge University Press. This book was released on 2000-05-11 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first overview of sampling for archaeologists for over twenty years, this manual offers a comprehensive account of the applications of statistical sampling theory which are essential to modern archaeological practice at a range of scales, from the regional to the microscopic. Bringing archaeologists up to date with an aspect of their work which is often misunderstood, it includes a discussion of the relevance of sampling theory to archaeological interpretation, and considers its fundamental place in fieldwork and post-excavation study. It demonstrates the vast range of techniques that are available, only some of which are widely used by archaeologists. A section on statistical theory also reviews latest developments in the field, and the formal mathematics is available in an appendix, cross-referenced with the main text.

Download or read book Pottery in Archaeology written by Clive Orton and published by Cambridge University Press. This book was released on 2013-05-13 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an up-to-date account of the different kinds of information that can be obtained through the archaeological study of pottery.

Download or read book Demography in Archaeology written by Andrew T. Chamberlain and published by Cambridge University Press. This book was released on 2006-07-06 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demography in Archaeology, first published in 2006, is a review of current theory and method in the reconstruction of populations from archaeological data. Starting with a summary of demographic concepts and methods, the book examines historical and ethnographic sources of demographic evidence before addressing the methods by which reliable demographic estimates can be made from skeletal remains, settlement evidence and modern and ancient biomolecules. Recent debates in palaeodemography are evaluated, new statistical methods for palaeodemographic reconstruction are explained, and the notion that past demographic structures and processes were substantially different from those pertaining today is critiqued. The book covers a wide span of evidence, from the evolutionary background of human demography to the influence of natural and human-induced catastrophes on population growth and survival. This is essential reading for any archaeologist or anthropologist with an interest in relating the results of field and laboratory studies to broader questions of population structure and dynamics.

Download or read book Photography in Archaeology and Conservation written by Peter G. Dorrell and published by Cambridge University Press. This book was released on 1994-09-29 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this revised and updated edition of his 1989 book, Peter Dorrell provides a comprehensive guide to the uses of photography in archaeology. Drawing on thirty-five years of experience, he examines the use of photography in field archaeology, in surveys, in archaeological laboratories, and in conservation. He offers a clear and well-illustrated explanation of the techniques involved, with sections on equipment and materials, survey and site photography, architectural photography, the recording of different types of artifacts, registration and storage, the use of ultra-violet and infra-red, and photography for publication. He also covers the growing use of video and electronic recording systems.