Download or read book Carbon Sequestration Within Northeastern Pacific Seagrass Meadows written by Brady Charles O'Donnell and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Coastal vegetated habitats like mangroves, salt marshes, and seagrasses are increasingly being recognized as important carbon sinks in an attempt to offset anthropogenic CO2 emissions. Carbon is sequestered in these environments because of high sediment accumulation and decreased remineralization of organic material (often referred to as ‘blue carbon’). Globally, seagrass ecosystems are shown to sequester carbon at high rates and contain large carbon stocks below seagrass canopies; however, little is known about carbon sequestration of Eastern Pacific seagrass beds. Here we investigate the carbon sequestration (by weight percent and elemental mass) and accumulation (g C m−2 yr−1) in four Northern California Zostera marina seagrass beds located in Tomales Bay and Bodega Harbor. A suite of push cores, between 20 and 30cm long, were collected inside sediments vegetated with Z. marina, as well as adjacent unvegetated sediments. Sediment organic carbon content (C[subscript org]) at three of our sites ranged from 0.32% to 0.50%. Short-lived radioisotope age-dating analyses indicate a conservative linear accumulation rate (LAR) of 0.15-0.2 cm yr−1. Applying a minimum LAR of 0.15 cm yr−1 the carbon accumulation of our sites range from 8.04 g C m−2 yr−1 to 12.82 g C m−2 yr−1. Results show that carbon sequestration varied spatially and temporally due to environmental characteristics like grain size and seagrass biomass. Sediment grain size predicts sediment organic carbon, while seagrass total biomass positively influences the carbon sequestration in seagrass beds. Given that carbon sequestration within Z. marina meadows varies at different spatial and temporal scales, local and regional data are necessary to understand the global importance of seagrasses in carbon sequestration.
Download or read book World Atlas of Seagrasses written by Frederick T. Short and published by Univ of California Press. This book was released on 2003 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seagrasses are a vital and widespread but often overlooked coastal marine habitat. This volume provides a global survey of their distribution and conservation status.
Download or read book BLUE CARBON IN SEAGRASS ECOSYSTEM written by Susi Rahmawati (Editors) and published by UGM PRESS. This book was released on 2019-11-18 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change poses a severe threat to the global ecosystem which will impact all nations around the world including ASEAN member countries. Urgent and integrated effort is critical to reduce the amount of carbon dioxide which traps heat in the atmosphere and causes climate change. Plants have the capacity to absorb and store a large amount of carbon. Recent researches suggest that seagrass ecosystem is one of the most promising carbon sequester and carbon sink. Seagrass absorbs carbon dioxide and converts it into potential energy which is stored in the form of organic carbon. The seagrass’ organic carbon and organic matter from other sources is trapped in the seagrass sediments. Due to this capacity, seagrass is recognized as a natural carbon dioxide removal (NCDR). Compared to tropical rainforests, seagrass meadows have more potential to capture and store a large amount of carbon (i.e. blue carbon). ASEAN countries share similar concerns and equal responsibility to preserve the seagrass ecosystem as a natural-based approach on mitigating global climate change. However, seagrass ecosystem in each of the ASEAN country has its own unique characteristics, posing challenges on the contribution assessment of each country. Thus, a general platform to collect data and calculate carbon sequestration from the seagrass ecosystem needs to be developed, to equally compare data and information among the ASEAN countries. Accordingly, this guideline was developed as a mean to fulfil the need.
Download or read book Blue Carbon Beyond the Inventory written by William Edward Newns Austin and published by Frontiers Media SA. This book was released on 2024-02-20 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Research Topic will coincide with an international Blue Carbon Conference at the Royal Society of Edinburgh in November 2021, during the UNFCCC COP26 climate negotiations; we seek to showcase Blue Carbon as a Nature-based Solution for Climate Change, People and Biodiversity. The conference theme identifies the growing climate mitigation opportunities presented by Blue Carbon, yet also seeks to highlight the emergent research that points to the wider climate mitigation services of carbon in the marine environment - what we are calling "beyond the inventory". We welcome contributions that address the science and policy dimensions of Blue Carbon, particularly where these highlight opportunities and mechanisms for the protection, restoration and creation of Blue Carbon habitats. We also welcome case-study examples that highlight successful partnerships in a wide range of international settings and would particularly encourage contributions that show-case legal, policy or investment opportunities.
Download or read book A Search for Blue Carbon in Central Salish Sea Eelgrass Meadows written by Mira Diana Lutz and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study quantified eelgrass (Zostera marina) sediment organic carbon and carbon sequestration rates in Skagit County, Wa, in sites likely to support organic content and sediment accretion, the key components for carbon sequestration. These data may inform eelgrass-specific projects aimed at mitigating climate change through the protection and restoration of "blue carbon" ecosystems. Blue carbon is the carbon stored or emitted by coastal wetlands, which have the capacity to sequester more organic carbon (OC) than equivalent areas of mature forest. This study follows recent research from a single site within Padilla Bay, Wa. (Padilla transect), reporting OC stock approximately three times lower and sequestration rates nearly five times lower than reported global seagrass (all species) averages. The Padilla transect study sampled in the intertidal zone of one established transect in northern Padilla Bay National Estuarine Research Reserve. This site has minimal terrestrial sediment input and low or negative sediment accretion rates. These limitations inspired a search for higher OC storage and sequestration values by expanding the study area to include two bays with active river distributaries and selecting sites likely to support organic content and sediment accretion a priori. Site criteria included location within eelgrass meadows having a combination of similar canopy heights and stem densities but lower elevations, and closer proximities to distributary mouths of active river systems than in the Padilla transect. Study objectives were to: a) quantify OC stocks and sequestration rates in the expanded study area in sites expected to support C sequestration b) compare these values to those from the Padilla transect and to those from widespread Zostera marina studies and global seagrass meadow averages, and c) identify site characteristics associated with higher OC where found. We measured stem density, canopy height, depth below mean lower low water (MLLW), and sediment compaction in the field, and analyzed sediment samples for bulk density, carbon concentration by direct C-analysis and loss on ignition (LOI), sediment accretion rate from gamma ray spectroscopy of 210Pb activity levels, and sediment grain size in the lab. Considering site selection in areas expected to support C sequestration, results may be considered within the upper bounds of the ranges found within our study area. The overall mean % OC± SE over 3 bays was 0.43 ± 0.01 %, with a range of 0.17% to 3.66% (n=20). Overall mean OC density ± SE was 0.0058 ± 0.0001 g cm-3 and ranged from 0.0018 to 0.0479 g cm-3 (n=20). Organic C stock to 50cm ± SE was 27.10 ± 1.40 Mg ha-1, with a range of 15.23-49.20 Mg ha-1 and SE=1.96 (n=20). The mean carbon sequestration rate ± SE was 43.88 ± 9.19 g C m-2 yr-1, ranging from 13.90 to 93.04, SE=17.04, (n=7), which should be considered the upper bounds of possible rates in this infauna-rich region. We found higher OC sequestration rates in our study than in the Padilla transect study (F = 8.41, p = 0.01 on 1 and 10 df) however, there were no differences in % OC (F = 0.26, p = 0.62 on 1 and 13 df) nor OC stock (F = 1.86, p = 0.20 on 1 and 13 df) between studies. Like the Padilla transect study, organic C values in our study were also 3-5 times lower than estimated global averages for % OC, OC stock, and OC sequestration rates, but within the range reported by five studies conducted in Zostera marina meadows worldwide. Percent sediment pore space explained most of the variation in OC stock. We conclude that within-meadow eelgrass OC increases with environmental factors contributing to the accretion of fine sediments which increase porosity, that Z. marina meadows in the Pacific Northwest and elsewhere exhibit far lower OC values than global averages for all seagrass species, which may be due to key factors preventing it from thriving in areas conducive to high C sequestration. We recommend that region- and site-specific C values be considered when valuing restoration projects to avoid underestimation of eelgrass area required to offset emissions "purchased" through the voluntary or compliance (cap and trade) C markets
Download or read book The Management of Natural Coastal Carbon Sinks written by Dan Laffoley and published by IUCN. This book was released on 2009 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Current Advances in Seagrass Research written by Jutta Papenbrock and published by Frontiers Media SA. This book was released on 2023-05-09 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Blue Carbon in Shallow Coastal Ecosystems written by Tomohiro Kuwae and published by Springer. This book was released on 2018-09-03 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive and innovative understanding of the role of shallow coastal ecosystems in carbon cycling, particularly marine carbon sequestration. Incorporating a series of forward-looking chapters, the book combines thorough reviews of the global literature and regional assessments—mainly around the Indo-Pacific region and Japan—with global perspectives to provide a thorough assessment of carbon cycling in shallow coastal systems. It advocates the expansion of blue-carbon ecosystems (mangroves, seagrass meadows, and salt marshes) into macroalgal beds, tidal flats, coral reefs, and urbanized shallow waters, demonstrating the potential of these ecosystems as new carbon sinks. Moreover, it discusses not only topics that are currently the focus of blue-carbon studies, i.e., sedimentary carbon stock and accumulation rate, but also CO2 gas exchange between the atmosphere and shallow coastal ecosystems, carbon storage in the water column as refractory organic carbon, and off-site carbon storage. Including highly original contributions, this comprehensive work inspires research beyond the specific regions covered by the chapters. The suite of new concepts and approaches is refreshing and demonstrates that blue-carbon research is indeed a vibrant new field of research, providing deep insights into neglected aspects of carbon cycling in the marine environment. At the same time the book provides guidance for policy makers to deliver benefits to society, for example the inclusion of blue carbon as a carbon offset scheme or the Nationally Determined Contribution (NDC) in the Paris Agreement, and also for building resilience in coastal socio-ecosystems through better management. This book is intended for all those interested in the science and management of coastal ecosystems.
Download or read book Seagrass Ecology written by Marten A. Hemminga and published by Cambridge University Press. This book was released on 2000-10-19 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seagrasses occur in coastal zones throughout the world, in the part of the marine habitat that is most heavily influenced by humans. Decisions about coastal management therefore often involve seagrasses, but a full appreciation of the role of seagrasses in coastal ecosystems has yet to be reached. This book provides an entry point for those wishing to learn about the ecology of this fascinating group of plants, and gives a broad overview of current knowledge, complemented by extensive literature references to guide the reader to more detailed studies.
Download or read book Blue Carbon written by C. Nellemann and published by UNEP/Earthprint. This book was released on 2009 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report explores the potential for mitigating the impacts of climate change by improved management and protection of marine ecosystems and especially the vegetated coastal habitat, or blue carbon sinks. The objective of this report is to highlight the critical role of the oceans and ocean ecosystems in maintaining our climate and in assisting policy makers to mainstream an oceans agenda into national and international climate change initiatives. While emissions' reductions are currently at the centre of the climate change discussions, the critical role of the oceans and ocean ecosystems has been vastly overlooked.
Download or read book Blue Carbon written by Daniel M. Alongi and published by Springer. This book was released on 2018-06-18 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work summarizes the science and management of a rapidly expanding topic in climate science, namely adaptation and mitigation. The term 'blue carbon' refers to the rates, pathways and volumes of greenhouse carbon sequestered in coastal estuarine and marine ecosystems such as salt marshes, mangroves and seagrass meadows. Blue carbon and its vital role in climate change mitigation are central to this book. Readers find summaries and analysis of both the basic scientific data and data from blue carbon field projects, and a practical guide on how to manage a successful blue carbon field project. There is a discussion on how to maximize the carbon sequestration and consideration of whether blue carbon projects make a difference. The work is not only of interest to scholars involved in climate science, but also those in the marine sciences, and those in ecosystem ecology, biogeochemistry; geochemistry; estuarine and marine plant ecology.
Download or read book Seagrasses Biology Ecology and Conservation written by Anthony Larkum and published by Springer Science & Business Media. This book was released on 2007-02-22 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seagrasses are unique plants; the only group of flowering plants to recolonise the sea. They occur on every continental margin, except Antarctica, and form ecosystems which have important roles in fisheries, fish nursery grounds, prawn fisheries, habitat diversity and sediment stabilisation. Over the last two decades there has been an explosion of research and information on all aspects of seagrass biology. However the compilation of all this work into one book has not been attempted previously. In this book experts in 26 areas of seagrass biology present their work in chapters which are state-of–the-art and designed to be useful to students and researchers alike. The book not only focuses on what has been discovered but what exciting areas are left to discover. The book is divided into sections on taxonomy, anatomy, reproduction, ecology, physiology, fisheries, management, conservation and landscape ecology. It is destined to become the chosen text on seagrasses for any marine biology course.
Download or read book Nitrogen in the Marine Environment written by Douglas G. Capone and published by Elsevier. This book was released on 2008-08-15 with total page 1759 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first edition of Nitrogen in the Environment published in 1983, it has been recognized as the standard in the field. In the time since the book first appeared, there has been tremendous growth in the field with unprecedented discoveries over the past decade that have fundamentally changed the view of the marine nitrogen cycle. As a result, this Second Edition contains twice the amount of information as contained in the first edition. This updated edition is now available online, offering searchability and instant, multi-user access to this important information. *The classic text, fully updated to reflect the rapid pace of discovery*Provides researchers and students in oceanography, chemistry, and marine ecology an understanding of the marine nitrogen cycle*Available online with easy access and search - the information you need, when you need it
Download or read book Global Seagrass Research Methods written by F.T. Short and published by Elsevier. This book was released on 2001-11-06 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thorough and informative volume presents a set of detailed, globally applicable techniques for seagrass research.The book provides methods for all aspects of seagrass science from basic plant collection to statistical approaches and investigations of plant-animal interaction. The emphasis is on methods that are applicable in both developing and developed countries. The importance of seagrasses in coastal and near shore environments, and ultimately their contribution to the productivity of the world's oceans, has become increasingly recognised over the last 40 years.Seagrasses provide food for sea turtles, nearly 100 fish species, waterfowl and for the marine mammals the manatee and dugong. Seagrasses also support complex food webs by virtue of their physical structure and primary production and are well known for their role as breeding grounds and nurseries for important crustacean, finfish and shell fish populations. Seagrasses are the basis of an important detrital food chain. The plants filter nutrients and contaminants from the water, stabilise sediments and act as dampeners to wave action. Seagrasses rank with coral reefs and mangroves as some of the world's most productive coastal habitat and strong linkages among these habitats make the loss of seagrasses a contributing factor in the degradation of the world's oceans.Contributors from around the world provide up-to-date methods for comparable collection of ecological information from both temperate and tropical seagrass ecosystems.
Download or read book The Ecology of Eelgrass Meadows in the Pacific Northwest written by Ronald C. Phillips and published by . This book was released on 1984 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Wetland Book written by C. Max Finlayson and published by Springer. This book was released on 2018-06-07 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Wetland Book is a comprehensive resource aimed at supporting the trans- and multidisciplinary research and practice which is inherent to this field. Aware both that wetlands research is on the rise and that researchers and students are often working or learning across several disciplines, The Wetland Book is a readily accessible online and print reference which will be the first port of call on key concepts in wetlands science and management. This easy-to-follow reference will allow multidisciplinary teams and transdisciplinary individuals to look up terms, access further details, read overviews on key issues and navigate to key articles selected by experts.
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.
