3,859 research outputs found

    Review on Wave Energy Technologies and Power Equipment for Tropical Reefs

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    As a promising renewable resource to replace part of the energy supply, the wave energy is having more and more interest worldwide. This paper presents a comprehensive analysis of different wave energy technologies in order to identify more promising methods for power supply to tropical reefs. It starts with summarizing the characteristics of tropical reefs in which the most suitable places to be exploited are shown, and the classification of different types of wave energy converters according to their construction features. It is also described in detail each of the stages that are part of the energy conversion. On the basis of the characteristics of tropical coral reefs, the paper puts forward a new type of raft wave energy device which can achieve high operational reliability and adaptability with cost-effective deployment

    Heavy weather: climate and the Australian Defence Force

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    This report argues that the downstream implications of climate change are forcing Defence to become involved in mitigation and response tasks. Defence’s workload here will increase, so we need a new approach. Heavy Weather makes a number of recommendations including: Defence should work with the Department of the Prime Minister and Cabinet and the Department of Climate Change and Energy Efficiency to establish an interagency working group on climate change and security. It would focus on addressing climate event scenarios for Australia and the Asia–Pacific  to manage the risks those scenarios pose to national resilience and regional stability.  Defence should appoint an adviser to the Chief of the Defence Force on climate issues to develop a Responding to Climate Change Plan that details how Defence will manage the effects of climate change on its operations and infrastructure. Defence should audit its environmental data to determine its relevance for climate scientists and systematically make that data publicly available. It should set up an energy audit team to see where energy efficiencies can be achieved in Defence. Australia should work with like-minded countries in the ‘Five Eyes’ community to share best practice and thinking on how military organisations should best respond to extreme weather events.   The recommendations aren’t about Defence having a ‘green’ view of the world: they’re about the ADF being well placed to deal with the potential disruptive forces of climate change

    Ornamental marine species culture in the coral triangle: seahorse demonstration project in the Spermonde Islands, Sulawesi, Indonesia.

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    Ornamental marine species ('OMS') provide valuable income for developing nations in the Indo-Pacific Coral Triangle, from which most of the specimens are exported. OMS culture can help diversify livelihoods in the region, in support of management and conservation efforts to reduce destructive fishing and collection practices that threaten coral reef and seagrass ecosystems. Adoption of OMS culture depends on demonstrating its success as a livelihood, yet few studies of OMS culture exist in the region. We present a case study of a land-based culture project for an endangered seahorse (Hippocampus barbouri) in the Spermonde Islands, Sulawesi, Indonesia. The business model demonstrated that culturing can increase family income by seven times. A Strengths Weaknesses Opportunities Threats (SWOT) analysis indicated good collaboration among diverse stakeholders and opportunities for culturing non-endangered species and for offshoot projects, but complicated permitting was an issue as were threats of market flooding and production declines. The OMS international market is strong, Indonesian exporters expressed great interest in cultured product, and Indonesia is the largest exporting country for H. barbouri. Yet, a comparison of Indonesia ornamental marine fish exports to fish abundance in a single local market indicated that OMS culture cannot replace fishing livelihoods. Nevertheless, seahorse and other OMS culture can play a role in management and conservation by supplementing and diversifying the fishing and collecting livelihoods in the developing nations that provide the majority of the global OMS

    Green Guide to the Cayman Islands 1: The marine environment

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    In the Cayman Islands we are enriched with a wonderful natural environment. In this Green Guide to our Marine Environment we hope to show you how all of our lives on these three magical islands are intimately connected to the land and the sea that surrounds it. Like many of our Caribbean neighbours, a large proportion of our economy depends on reef-based fishing, diving and tourism. The beauty of our coral reefs, our beaches and our lagoons is that it is part of our heritage, and it draws many thousands of overseas visitors to our shores. It is our responsibility, as stakeholders sharing this beautiful environment, to do what we can to minimise our impact upon it. Ogier has sponsored the Green Guide, and through this publication, is helping us to preserve our natural and cultural heritage.... [PDF contains 32 pages

    Science-based restoration monitoring of coastal habitats, Volume Two: Tools for monitoring coastal habitats

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    Healthy coastal habitats are not only important ecologically; they also support healthy coastal communities and improve the quality of people’s lives. Despite their many benefits and values, coastal habitats have been systematically modified, degraded, and destroyed throughout the United States and its protectorates beginning with European colonization in the 1600’s (Dahl 1990). As a result, many coastal habitats around the United States are in desperate need of restoration. The monitoring of restoration projects, the focus of this document, is necessary to ensure that restoration efforts are successful, to further the science, and to increase the efficiency of future restoration efforts

    Champagne Seas—Foretelling the Ocean’s Future?

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    NRPT: Learning from the Past and Moving Forward: Response Challenges from Severe Weather or Tsunamis to Shared Trust Resources and Mission Responsibilities

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    On April 23-25th, 2019, CRRC and DPP co-sponsored a National Oceanic and Atmospheric Administration (NOAA) Regional Preparedness Training (NRPT) Workshop at the USEPA facility in Guaynabo, Puerto Rico. The workshop, titled “Learning from the Past and Moving Forward: Response* Challenges from Severe Weather or Tsunamis to Shared Trust Resources and Mission Responsibilities”, focused on preparedness, planning and improving response to an extreme weather event or natural disaster. This was the fourth workshop in a series of NRPT events, the goal of this workshop is to provide focused discussion regarding lessons learned from hurricane and natural disaster response for specific regions. NRPT workshops are conducted to improve preparedness and build a common understanding of how disasters can be addressed when they threaten personnel, infrastructure or natural resources. This program uses NOAA resources to address localized problems and concerns with respect to emergency preparedness and planning. The focus of the workshop was improving preparedness- through communication, logistics and building relationships/planning season for the Caribbean region (e.g., Puerto Rico, U.S. Virgin Islands) following the 2017 hurricane. Workshop Objectives: Improve knowledge and skills to enhance risk communications before and after a damaging or disastrous tropical hurricane (cyclone) or tsunami event. Apply lessons learned to “disaster readiness” for safety of staff and families as well as shared trust resources. Enhance effective mission response and recovery activities. Build resilient local coastal communities on the islands through preparedness planning to: (a) gain knowledge, (b) enhance cross-agency and cross-regional coordination, and (c) foster response/recovery planning and informed actions. Workshop Goals: With adequate information and communicated knowledge, the public and response community will make informed decisions relative to personal protection and safety. With adequate information and effective communications, responders and natural resource managers are prepared for and respond effectively to mitigate disaster impacts
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