This report represents the first economic valuation of the ecosystem services provided by deep-sea sponges in the North Atlantic. It is based on information available in the scientific literature at the time of writing, but also indicates the research areas where discoveries and research advances are shortly expected. The report is aimed at a generic public with no specialized knowledge on sponges or on economic valuation. It is outlined in a way to provide essential background information, but makes reference to a comprehensive list of scientific publications for further insights.

The Common Oceans ABNJ Deep Seas Project is funded by the Global Environment Fund and implemented by FAO and the UN Environment Programme. The partnership brings together a broad range of partners, including regional fisheries bodies responsible for the management of deep-sea fisheries, fishing industry partners, and international organizations to achieve sustainable fisheries management and biodiversity conservation of deep-sea living resources in the ABNJ. To showcase existing knowledge, practices and innovative research for sustainable deep-sea fisheries management and biodiversity conservation in the ABNJ, the Food and Agriculture Organization of the United Nations (FAO), in collaboration with UN Environment World Conservation Monitoring Centre (UNEP-WCMC) and the SponGES Project consortium, organized a meeting – the ABNJ Deep Sea Meeting 2019 – that took place on 7-9 May 2019, at FAO Headquarters in Rome, Italy. Over 40 participants, including representatives from partner organizations and other stakeholders from multiple sectors within the ABNJ, attended the three-day meeting. While significant progress has been made in the management of deep-sea fisheries and in the protection of vulnerable marine ecosystems, the ABNJ still faces threats from climate change, ocean acidification, biodiversity loss, and pollution. Building on the achievements of the Common Oceans ABNJ Deep Sea Projects and the SponGES Project, the participants were invited to give presentations on key topics and discuss emerging issues concerning ABNJ governance and deep-sea research, monitoring and management.

This circular stems from a study carried out for FAO projects “Sustainable Fisheries Management and Biodiversity Conservation of Deep-Sea Living Marine Resources and Ecosystems in the Areas Beyond National Jurisdiction” (GCP/GLO/366/GFF) and “Deep-Sea Sponge Grounds Ecosystems of the North Atlantic: An Integrated Approach Towards their Preservation and Sustainable Exploitation” (GCP/GLO/679/EC). These projects included outputs related to the economic valuation of goods and services provided by the deep seas in areas beyond national jurisdiction. This study compiled an estimate of the total economic value (TEV) of the deep seas, which considered the provision of deep-water fish, the harvest of precious corals, the use of substances of marine origin as pharmaceuticals, the extraction of deep and ultra-deep oil and the potential mining of mineral resources from the seafloor, carbon sequestration carried out by the deep seas, the importance of scientific research in the deep seas, and touristic activities with submersibles to visit sites such as the Titanic shipwreck. Comprehensively, the TEV assessed for the deep-sea ecosystem as a whole is estimated at USD 267 billion per year. Ninety two percent of the economic value originates from abiotic resources (oil and minerals), 5 percent from biotic resources (fish, corals and pharmaceuticals of marine origin), 2 percent from cultural services (scientific research and tourism/recreation), and 1 percent from carbon sequestration.

Assessments and Conservation of Biological Diversity from Coral Reefs to the Deep Sea: Uncovering Buried Treasures and the Value of the Benthos examines marine benthic habitats around the world that are linked by their physical location at the bottom of the oceans. The book approaches deep sea marine biodiversity with perspectives on genetics, microbiology and evolution, weaving a narrative of vital expert linkages with the goal of protecting something that most people cannot witness or experience. It provides a full assessment of biological diversity within benthic habitats, from coral reefs to plankton and fish species, and offers global case studies. It is the ideal resource for marine conservationists and biologists aiming to expand their knowledge and efforts to the rarely seen, yet equally important, realms of the ocean and respective benthic species. As these deep-sea ecosystems and their species face unprecedented threats of destruction and extinction due to factors including climate change, this book provides the most current knowledge of this undersea world along with solutions for its conservation. - Compares and contrasts between shallow and marine habitats to reveal revolutionary connections and continuity - Analyzes modern threats and gaps in biological knowledge regarding benthic communities - Examines benthic biodiversity through vertical vs. horizontal gradients - Poses possible solutions for the conservation of benthic habitats and organisms

During the last decades there has been an increasing evidence of drastic changes in marine ecosystems due to human-induced impacts, especially on benthic ecosystems. The so called “animal forests” are currently showing a dramatic loss of biomass and biodiversity all over the world. These communities are dominated by sessile suspension feeder organisms (such as sponges, corals, gorgonians, bivalves, etc.) that generate three-dimensional structures, similar to the trees in the terrestrial forest. The animal forest provide several ecosystem services such as food, protection and nursery to the associated fauna, playing an important role in the local hydrodynamic and biogeochemical cycles near the sea floor and acting also as carbon sinks. The present book focus its attention on these three dimensional animal structures including, for the first time, all the different types of animal forests of the world in a single volume.

U.S. mariculture production of bivalve molluscs-those cultivated in the marine environment-has roughly doubled over the last 25 years. Although mariculture operations may expand the production of seafood without additional exploitation of wild populations, they still depend upon and affect natural ecosystems and ecosystem services. Every additional animal has an incremental effect arising from food extraction and waste excretion. Increasing domestic seafood production in the United States in an environmentally and socially responsible way will likely require the use of policy tools, such as best management practices (BMPs) and performance standards. BMPs represent one approach to protecting against undesirable consequences of mariculture. An alternative approach to voluntary or mandatory BMPs is the establishment of performance standards for mariculture. Variability in environmental conditions makes it difficult to develop BMPs that are sufficiently flexible and adaptable to protect ecosystem integrity across a broad range of locations and conditions. An alternative that measures performance in sustaining key indicators of ecosystem state and function may be more effective. Because BMPs address mariculture methods rather than monitoring actual ecosystem responses, they do not guarantee that detrimental ecosystem impacts will be controlled or that unacceptable impact will be avoided. Ecosystem Concepts for Sustainable Bivalve Mariculture finds that while performance standards can be applied for some broad ecosystem indicators, BMPs may be more appropriate for addressing parameters that change from site to site, such as the species being cultured, different culture methods, and various environmental conditions. This book takes an in-depth look at the environmental, social, and economic issues to present recommendations for sustainable bivalve mariculture.