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 Ocean Acidification and Marine Wildlife written by Guangxu Liu and published by Academic Press. This book was released on 2021-07-14 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean Acidification and Marine Wildlife: Physiological and Behavioral Impacts provides comprehensive knowledge on how decreases in the pH of the world’s oceans is affecting marine organisms. The book synthesizes recent findings about the impacts of ocean acidification (OA) on marine animals, covering the physiological and behavioral effects upon marine invertebrates and vertebrates, the potential physiological and molecular mechanism affects, and interactions of OA with other environmental factors. Written by international experts in this research field, this book summarizes new discoveries of OA effects on fertilization, embryonic development, biomineralization, metabolism, immune response, foraging, anti-predation, habitat selection, and the social hierarchy of marine animals. This is an important resource for researchers and practitioners in marine conservation, marine wildlife studies, and climate change studies. In addition, it will serve as a valuable text for marine biology and animal science students. Examines the impacts of carbon dioxide increases in the world’s oceans relating to marine vertebrates and invertebrates Identifies environmental factors, including climate change and pollution and how they increase the negative effects of ocean acidification Facilitates a better understanding of ocean acidification effects for conservationism and future prevention

Download or read book Trophic Consequences of Ocean Acidification written by Brittany Mary Jellison and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean acidification (OA) is expected to detrimentally impact marine organisms by impairing their growth, calcification, and acid-base regulation. Less is known about the capacity of OA to shift ecological interactions. In this dissertation, I examine how changes in carbonate chemistry within tidepools influence constituent members of food webs, with significance for the trophic cascades in which they are embedded. In particular, I focus on a model community within the rocky intertidal zone of the eastern Pacific Ocean that includes sea star predators, a grazing snail prey, and macroalgal basal resources. Together the findings of this dissertation suggest a potential for ocean acidification to attenuate the anti-predator behavior of intermediate consumers within food webs and influence the cascading effects imposed by predators on lower trophic levels within marine communities. Chapter one assesses the anti-predator response of a grazing snail, Tegula funebralis, to the scent of the keystone sea star predator, Pisaster ochraceus, at 16 levels of pH. In this work, I conducted laboratory experiments to quantify the full-functional flight response of Tegula under present and future tidepool conditions, assessing the propensity of this snail to enter into refuge out of the water where sea star predators tend not to follow. I found that low-pH seawater impairs the anti-predator behavior of black turban snails. I also determined that fluctuations in pH that allow snails to experience benign-pH conditions daily, typical of tidepool conditions, do not restore functional behavioral responses. The results from this chapter suggest a strong potential for low-pH seawater to alter essential behaviors that have bearing on direct and indirect components of trophic interactions. In the second chapter, I investigate how the deleterious effects of low-pH exposure on the anti-predator behavior of black turban snails, as quantified in Chapter 1, might scale up to alter ecological interactions and disrupt indirect trophic pathways. For this chapter, I conducted a mesocosm experiment using a three-level food web. By means of this model system I assessed the influence of pH on a) the foraging efficiency of a sea star predator, Leptasterias hexactis, b) the avoidance behavior of Tegula snails, and c) the accompanying consequences for the outcome of their predator-prey interaction. In addition, I determined the capacity for low pH to alter the top-down influence of predators on a lower trophic level, the macroalga, Mazzaella flaccida. Results indicate that the impaired behavior of black turban snails under low-pH conditions elevates their risk of being consumed by sea stars, and alters their foraging behavior, ultimately weakens the cascading benefits of predators on algae. In particular, while snails in ambient conditions flee predators and so spend less time grazing algae, low pH degrades the anti-predator behavior of the snails, leading them to forage on algae regardless of the presence of a sea star or not. These findings suggest that ocean acidification could weaken indirect trophic pathways and induce unexpected community-level consequences in coastal ecosystems. In the third chapter, I examine the capacity for OA to perturb relationships among species in a natural setting. I conducted a manipulative field experiment using replicate tidepools to determine how low-pH seawater modifies the direct and indirect interactions within a three-level food web that includes the keystone sea star predator, Pisaster ochraceus, the grazing snail, Tegula funebralis, and a macroalgal basal resource, Macrocystis pyrifera. I found that even under field settings, nighttime declines in tidepool pH diminished the anti-predator behavior of snails, engendering reductions in the top-down influence of predators on lower trophic levels. Snails in pools where pH was manipulated to remain at a higher level responded to predators by exiting tidepool waters and decreasing their foraging on algae. In contrast, in natural and low-pH manipulated pools, snails behaved as if sea stars were not present when they were, and consumed an equal amount of algae as in pools without a predator. These results suggest that tidepool- inhabiting snails might currently be living near their behavioral-pH thresholds and that ecological consequences of exposure to natural low-pH conditions could be exacerbated in a future ocean.

Download or read book Guide to Best Practices for Ocean Acidification Research and Data Reporting written by and published by . This book was released on 2011 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ocean Acidification written by Jean-Pierre Gattuso and published by Oxford University Press. This book was released on 2011-09-15 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ocean helps moderate climate change thanks to its considerable capacity to store CO2, through the combined actions of ocean physics, chemistry, and biology. This storage capacity limits the amount of human-released CO2 remaining in the atmosphere. As CO2 reacts with seawater, it generates dramatic changes in carbonate chemistry, including decreases in pH and carbonate ions and an increase in bicarbonate ions. The consequences of this overall process, known as "ocean acidification", are raising concerns for the biological, ecological, and biogeochemical health of the world's oceans, as well as for the potential societal implications. This research level text is the first to synthesize the very latest understanding of the consequences of ocean acidification, with the intention of informing both future research agendas and marine management policy. A prestigious list of authors has been assembled, among them the coordinators of major national and international projects on ocean acidification.

Download or read book Climate Change Effects on Marine Species Across Trophic Levels written by Nan Hu and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change and anthropogenic activities are producing a range of new selection pressures, both abiotic and biotic, on marine organisms. While there are numerous studies that have investigated the response of individual marine organisms to climate change, few studies have focused on differences in organismal responses across trophic levels. Such trophic differences in response to climate change may disrupt ecological interactions and thereby threaten marine ecosystem function. In addition, predation is known as a strong driver that impacts individuals and populations. Despite this, we still do not have a comprehensive understanding of how different trophic levels respond to climate change stressors, predation and their combined effects in marine ecosystems. The main focus of this thesis is to identify whether marine trophic levels respond differently to climatic stressors and predation. To explore these questions, I have used a combination of traditional mesocosm experiments, together with a statistical method called meta-analysis. I initiated the research by study the responses of marine gastropods at two trophic levels to ocean acidification and predation using long-term mesocosm experiments together with a gastropod-specific meta-analyses. I focused on the amount of phenotypic plasticity in morphological traits of snails when exposed to the two stressors. In order to generalise and test these assumptions among a greater number of marine taxa, I used the meta-analysis approach to investigate the effects of ocean acidification and warming, as well as their combined effects on four marine trophic levels. Finally, to study the individual and combined effects of ocean acidification and predation with respect to inducible defences, I again applied a mesocosm experiment and used blue mussels as a model species. By using long-term mesocosm experiments and the gastropod-specific meta-analysis on marine gastropods from two trophic levels, I showed that these trophic levels varied in their responses to both ocean acidification and predation. Gastropods at lower trophic levels exhibited greater phenotypic plasticity against predation, while those from higher trophic levels showed stronger tolerance to ocean acidification. Next, by using a meta-analysis, including a large number of species and taxa, examining the effects of ocean acidification and warming, I revealed that top-predators and primary producers were most tolerant to ocean acidification compared to other trophic levels. Herbivores on the other hand, were the most vulnerable trophic level against abiotic stress. Again, using the meta-analysis approach, but this time incorporating only factorial experimental data that included the interactive effects of ocean acidification and ocean warming, I showed that higher trophic levels again were the most tolerant trophic level, and herbivores being most sensitive, with respect to the combined effect of the two stressors. Contrary to previous discussions in the literature concerning multiple climate-related stressors, antagonistic and additive effects occurred most frequently, while synergistic effects were less common and which decreased with increasing trophic rank. Finally, by conducting a fully-factorial experiment using blue mussels, I found that mussels with previous experience contact with predator has developed greater inducible defences than ones without previous experience. However, levels of ocean acidification may mask predator cues, or obstruct shell material, and consequently disrupt blue mussels inducible defence from crab predation. In summary, marine trophic levels respond differently to both biotic and climatic stressors. Higher trophic levels, together with primary producers, were often more robust against abiotic stress and may therefore be better prepared for future oceans compare species from lower trophic levels. These results may provide vital information for: implementing effective climate change mitigation, to understand which stressors to act on, and when and where to intervene for prioritizing conservation actions.

Download or read book Ocean Acidification Due to Increasing Atmospheric Carbon Dioxide written by and published by . This book was released on 2005 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Future Oceans Under Multiple Stressors From Global Change to Anthropogenic Impact written by Erik Olsen and published by Frontiers Media SA. This book was released on 2020-12-30 with total page 309 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 Second Assessment of Climate Change for the Baltic Sea Basin written by The BACC II Author Team and published by Springer. This book was released on 2015-04-03 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: ​This book is an update of the first BACC assessment, published in 2008. It offers new and updated scientific findings in regional climate research for the Baltic Sea basin. These include climate changes since the last glaciation (approx. 12,000 years ago), changes in the recent past (the last 200 years), climate projections up until 2100 using state-of-the-art regional climate models and an assessment of climate-change impacts on terrestrial, freshwater and marine ecosystems. There are dedicated new chapters on sea-level rise, coastal erosion and impacts on urban areas. A new set of chapters deals with possible causes of regional climate change along with the global effects of increased greenhouse gas concentrations, namely atmospheric aerosols and land-cover change. The evidence collected and presented in this book shows that the regional climate has already started to change and this is expected to continue. Projections of potential future climates show that the region will probably become considerably warmer and wetter in some parts, but dryer in others. Terrestrial and aquatic ecosystems have already shown adjustments to increased temperatures and are expected to undergo further changes in the near future. The BACC II Author Team consists of 141 scientists from 12 countries, covering various disciplines related to climate research and related impacts. BACC II is a project of the Baltic Earth research network and contributes to the World Climate Research Programme.

Download or read book Ocean Acidification Effect on Prokaryotic Metabolism Tested in Two Diverse Trophic Regimes in the Mediterranean Sea written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Bridging the gap between ocean acidification impacts and economic valuation written by International Union for the Conservation of Nature and Natural Resources (IUCN). Global Marine and Polar Programme. and published by IUCN. This book was released on 2015-05-01 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Following the first international workshop on the economics of ocean acidification organized by the Centre Scientifique de Monaco and the International Atomic Energy Agency in 2010, a second international workshop was held in November 2012, which explored the level of risk, and the resilience or vulnerability of defined regions of the world ocean in terms of fishery and aquaculture species and economic impacts, and social adaptation. This report includes the findings and recommendations of the respective regional working groups and is the result of an interdisciplinary survey of ocean acidification-sensitive fisheries and aquaculture.

Download or read book Ocean Acidification written by National Research Council and published by National Academies Press. This book was released on 2010-10-14 with total page 163 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 Review of the Federal Ocean Acidification Research and Monitoring Plan written by National Research Council and published by National Academies Press. This book was released on 2013-07-03 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world's ocean has already experienced a 30% rise in acidity since the industrial revolution, with acidity expected to rise 100 to 150% over preindustrial levels by the end of this century. Potential consequences to marine life and also to economic activities that depend on a healthy marine ecosystem are difficult to assess and predict, but potentially devastating. To address this knowledge gap, Congress passed the Federal Ocean Acidification Research and Monitoring (FOARAM) Act in 2009, which, among other things, required that an interagency working group create a "Strategic Plan for Federal Research and Monitoring of Ocean Acidification." Review of the Federal Ocean Acidification Research and Monitoring Plan reviews the strategic plan on the basis of how well it fulfills program elements laid out in the FOARAM Act and follows the advice provided to the working group in the NRC's 2010 report, Ocean Acidification: A National Strategy to Meet the Challenges of a Changing Ocean. This report concludes that, overall, the plan is strong and provides a comprehensive framework for improving our understanding of ocean acidification. Potential improvements include a better defined strategy for implementing program goals, stronger integration of the seven broad scientific themes laid out in the FOARAM Act, and better mechanisms for coordination among federal agencies and with other U.S. and international efforts to address ocean acidification.

Download or read book Oceans and Human Health written by Patrick J. Walsh and published by Academic Press. This book was released on 2011-09-02 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oceans and Human Health highlights an unprecedented collaboration of environmental scientists, ecologists and physicians working together on this important new discipline, to the benefit of human health and ocean environmental integrity alike. Oceanography, toxicology, natural products chemistry, environmental microbiology, comparative animal physiology, epidemiology and public health are all long established areas of research in their own right and all contribute data and expertise to an integrated understanding of the ways in which ocean biology and chemistry affect human health for better or worse. This book introduces this topic to researchers and advanced students interested in this emerging field, enabling them to see how their research fits into the broader interactions between the aquatic environment and human health. Color illustrations of aquatic life and oceanic phenomena such as hurricanes and algal blooms Numerous case studies Socio-economic and Ethical Analyses place the science in a broader context Study questions for each chapter to assist students and instructors Risks and remedies sections to help define course modules for instruction

Download or read book Oceanography and Marine Biology written by S. J. Hawkins and published by CRC Press. This book was released on 2018-09-03 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chapter 3 of this book is freely available as a downloadable Open Access PDF under a Creative Commons Attribution-Non Commercial-No Derivatives 3.0 license. https://s3-us-west-2.amazonaws.com/tandfbis/rt-files/docs/Open+Access+Chapters/9781138318625_oachapter3.pdf Oceanography and Marine Biology: An Annual Review remains one of the most cited sources in marine science and oceanography. The ever increasing interest in work in oceanography and marine biology and its relevance to global environmental issues, especially global climate change and its impacts, creates a demand for authoritative reviews summarizing the results of recent research. OMBAR has catered to this demand since its foundation more than 50 years ago. Following the favourable reception and complimentary reviews accorded to all the volumes, Volume 56 continues to regard the marine sciences—with all their various aspects—as a unity. Physical, chemical, and biological aspects of marine science are dealt with by experts actively engaged in these fields, and every chapter is peer-reviewed by other experts working actively in the specific areas of interest. The series is an essential reference text for researchers and students in all fields of marine science and related subjects, and it finds a place in libraries of universities, marine laboratories, research institutes and government departments.

Download or read book The Environmental and Economic Impacts of Ocean Acidification written by United States. Congress. Senate. Committee on Commerce, Science, and Transportation. Subcommittee on Oceans, Atmosphere, Fisheries, and Coast Guard and published by . This book was released on 2011 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: