The OHI defines a healthy ocean as one that sustainably delivers a range of benefits to people now and in the future based on 10 diverse public goals. The 2013 score of 65 out of 100 demonstrates the ongoing need for more effective management of this precious resource.
This is a purple anemone and anemone fish.
"I'm encouraged because people, organizations and governments are paying attention to the Ocean Health Index and what they can learn from it," Halpern said. "Not only has the OHI been adopted as an indicator to gauge how well countries are meeting their biodiversity conservation targets, but it is beginning to inform the United Nations World Ocean Assessment and was named by the World Economic Forum as one of two endorsed tools for helping achieve sustainable oceans."
Goal scores out of a possible 100 for categories that make up the OHI ranged from a low of 31 for natural products to a high of 95 for artisanal fishing opportunities. Other categories include food provision (33), carbon storage (74), coastal protection (69), coastal livelihoods and economies (82), tourism and recreation (39), sense of place (60), clean waters (78) and biodiversity (85).
With a score of only 33 out of 100, food production from wild harvest and mariculture (cultivation of marine organisms in the open ocean) was the second-lowest-scoring goal and one of the most important resources from the sea for people around the world. A score of 100 is given for wild-caught fisheries if the biomass of landed stocks at sea is within ±5 percent of a buffered amount below the biomass that can deliver maximum sustainable yield. For mariculture, the number of tonnes of product per coastal inhabitant living within 31 miles of the coast is calculated for each country, and all countries above the 95th percentile receive scores of 100. Countries that have never had mariculture are not scored.
"Seafood is a major source of protein for one-third of the world's population, and it is estimated we will need 70 percent more food by 2050 to feed the growing population," said Daniel Pauly, principal investigator of the Sea Around Us project and leader of the University of British Columbia team of science contributors to OHI. "The score of 33 out of 100 for food provision indicates we are not ready to meet that challenge."
The 2013 OHI also assessed coastal protection, giving it a score of 69 out of 100 and indicating that further declines are likely. Coastal habitats –– including mangrove forests, sea-grass beds and salt marshes, coral reefs and sea ice –– protect coastlines from storm surges and coastal flooding. Forty-five countries that sit in the annual path of tropical cyclones had an average score of 52 out of 100. A score below 100 indicates a decline in area and condition of key natural habitats that protect shorelines from storms.
Among those cyclone-prone countries with a population exceeding 10 million people, the average coastal protection score is only 51 compared to the global average score of 69. The score was down slightly (-0.2 percent) from 2012 and the OHI calculates that the likely future status will decrease by 1 percent in the coming five years.
"Restoring natural protective habitats in storm-prone regions, in combination with sensible coastal planning and creative civil engineering, is essential," said Greg Stone, a leading authority on marine conservation policy and ocean health issues and executive vice president at Conservation International's Betty and Gordon Moore Center for Science and Oceans.
Wealthy countries have the greatest impact on industry and policy so their performance on the OHI is important to ocean health, but there was little correlation between their economic performance as measured by gross domestic product (GDP) and their OHI scores. The average score of countries with the 15 highest GDPs was 65 –– higher than the global average, but still not optimal.
"In its second year now, the OHI demonstrates that the areas with the least human impact have healthier oceans, but it also shows that nations who manage their resources better achieve higher OHI scores," Halpern said. "We depend on the health of the ocean for many benefits, such as food, livelihood and tourism, and the OHI indicates that the condition of these benefits needs to be improved in order to provide a healthy thriving ocean for our children and their children."
The OHI is a collaborative effort, made possible through contributions from more than 65 scientists/ocean experts and partnerships among organizations including UCSB's NCEAS, Sea Around Us, Conservation International, National Geographic and the New England Aquarium. The full set of scores for each country can be found at oceanhealthindex.org.
From the Arctic to the tropics: researchers present a unique database on Earth’s vegetation
20.11.2018 | Martin-Luther-Universität Halle-Wittenberg
Fading stripes in Southeast Asia: First insight into the ecology of an elusive and threatened rabbit
20.11.2018 | Forschungsverbund Berlin e.V.
Max Planck researchers revel the nano-structure of molecular trains and the reason for smooth transport in cellular antennas.
Moving around, sensing the extracellular environment, and signaling to other cells are important for a cell to function properly. Responsible for those tasks...
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
19.11.2018 | Event News
09.11.2018 | Event News
06.11.2018 | Event News
20.11.2018 | Life Sciences
20.11.2018 | Life Sciences
20.11.2018 | Physics and Astronomy