Connect with us

Environment

Protection of seagrasses key to building resilience to climate change, disasters

Published

on

Seagrass meadows can be a powerful nature-based climate solution and help sustain communities hard-hit by stressors such as the COVID-19 pandemic, but these important ecosystems continue to decline. The importance of seagrasses is highlighted in a new report, Out of the Blue: The Value of Seagrasses to the Environment and to People, released by the United Nations Environment Programme (UNEP) together with GRID-Arendal  and the UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC).

Seagrass meadows are among the most common coastal habitats on Earth, covering more than 300,000 km2 in at least 159 countries. They nurture fish populations, weaken storm surges, and provide numerous other services to coastal communities. Seagrass ecosystems are biologically rich and highly productive, providing valuable nursery habitats to more than 20 per cent of the world’s largest 25 fisheries. They can filter pathogens, bacteria, and pollution out of seawater, and are home to endangered and charismatic species such as dugongs, seahorses, and sea turtles.

But an estimated 7 per cent of seagrass habitat is being lost worldwide each year, and at least 22 of the world’s 72 seagrass species are in decline. Since the late 19th century, almost 30 per cent of known seagrass area across the globe has been lost. The main threats to seagrass meadows include urban, industrial, and agricultural run-off, coastal development, dredging, unregulated fishing and boating activities, and climate change.

The report, launched on World Oceans Day, finds that seagrass ecosystems play an outsized role in combatting the climate crisis. Though they cover only 0.1 per cent of the ocean floor, these meadows are highly efficient carbon sinks, storing up to 18 per cent of the world’s oceanic carbon. Countries aiming to do their part under the Paris Agreement can include seagrass protection and restoration in their nationally determined contributions (NDCs) to help reduce the amount of heat-trapping carbon in our atmosphere.

“Maintaining the health of seagrass ecosystems – which provide food and livelihoods to hundreds of millions of people, support rich biodiversity, and constitute one of the planet’s most efficient stores of carbon – is important for healthy marine life and for healthy people around the world,” said Susan Gardner, Director of Ecosystems Division. “Seagrasses represent powerful nature-based solutions to the climate challenge and sustainable development.”

As the global community works to build back better and strengthen economies and societies in the wake of the devastation wrought by this pandemic, preserving and restoring seagrass ecosystems can be a highly effective way to protect food chains and create jobs in industries such as fishing and tourism.

The well-being of human communities all around the globe is closely tied to the health of seagrass meadows. In Tanzania, a decline in seagrass was found to have a negative impact on the livelihoods of women who collect invertebrates, such as clams, sea snails and sea urchins, from seagrass meadows. In the North Atlantic, seagrass provides critical habitat to juvenile Atlantic cod, a major commercial species that is fished by fleets from more than a dozen nations. Seagrasses are also part of the cultural fabric of many island communities. For example, in the Solomon Islands, fishers twist seagrass leaves together and shout to seagrass spirits for good luck.

“Seagrasses are the super ecosystems of our oceans, providing an incredible range of benefits to people around the world. Yet, while their flashier counterparts attract more attention, they remain among the most unheralded aquatic environments on Earth. The Out of the Blue report showcases the many ways that seagrasses help people thrive and sustain the healthy natural environment that we all depend on,” said Dr. Maria Potouroglou, seagrass scientist at GRID-Arendal and lead editor of the report.

Despite their importance, new data suggest that seagrasses are among the least protected coastal habitats. Only 26 per cent of recorded seagrass meadows fall within Marine Protected Areas (MPAs) compared with 40 per cent of coral reefs and 43 per cent of mangroves.

“Seagrasses can help us solve our biggest environmental challenges. They purify water, they protect us from storms, they provide food to hundreds of millions of people, they support rich biodiversity, and they efficiently store carbon. In light of everything seagrasses do for people and nature, protecting and restoring them is vital”, said Ronald Jumeau, Permanent Representative to the United Nations and Ambassador for Climate Change, Republic of Seychelles.

Conserving and restoring seagrass meadows can contribute to achieving as many as 10 of the UN Sustainable Development Goals as well as the goals of the Paris Agreement and the Convention on Biological Diversity.

Continue Reading
Comments

Environment

Discrimination in the air

Published

on

Nine out of 10 people globally breathe polluted air, causing about 7 million premature deaths every year. On 7 September 2020, the United Nations observed the first International Day of Clean Air for blue skies. This article is part of UNEP’s continuing coverage of air pollution and its impact globally.

Over 40 per cent of the U.S. population – about 134 million people – face health risks resulting from air pollution, -according to the American Lung Association. The burden is far from evenly shared. Studies show that in the United States, people of color and low-income communities face a significantly higher risk of environmental health effects, highlighting that the impacts of air pollution are experienced unequally throughout the country.

People of color are more likely to live in areas affected by pollution and high road traffic density, increasing risks to their health. As prominent American environmental justice activist and leader Robert D. Bullard emphasizes, race and place matter.

For example, along the Mississippi River in the southern United States, there is an area with some of the worst air pollution in the country. In the stretch between New Orleans and Baton Rouge Louisiana, many people live right next to several high-polluting industrial plants. Residents, who are predominately Black, have seen significant cancer clusters, with cancer risks in the area reaching up to 50% more than the national average. In St. John the Baptist parish alone, an area of about 2 square miles, the cancer rate is about 800 times higher than the American average.

Similarly, New York City neighborhood Mott Haven, home to mainly LatinX and Black families, has a very high level of air pollution from traffic, warehouses, and industry.  Residents in Mott Haven face some of the highest rates of asthma cases and asthma-related hospitalizations in the country, especially among children.

Often, communities experiencing high levels of air pollution are among the most vulnerable, facing poor access to health services, limited economic opportunity, more polluted work environments and racial injustices.  Comprehensive policies are needed to address these interrelated challenges.

“There is a strong correlation between socioeconomic factors and risk of air pollution,” said Dr. Barbara Hendrie, Regional Director for UN Environment Programme North America. “Recognizing this, and the disproportionate impacts of air pollution throughout the United States is a critical part of developing effective solutions.”

On the first-ever International Day of Clean Air for blue skies in September, the UN Environment Programme called upon governments, corporations, to civil society and individuals, to take action to reduce air pollution and bring about transformative change.

Air pollution does not have to be a part of our collective future. We have the solutions and must take the necessary actions to address this environmental menace and provide #CleanAirForAll.

UN Environment

Continue Reading

Environment

New strains of rice could address climate change

Published

on

Rice is a staple for more than 3.5 billion people, including most of the world’s poor. But it can be a problematic crop to farm. It requires massive amounts of water and the paddies in which it grows emit methane, a potent greenhouse gas.

To tackle such issues, the United Nations Environment Programme (UNEP) has been working with the Shanghai Agrobiological Gene Center to develop strains of rice that are drought resistant and don’t need to be planted in paddies. The research, say, experts, could help bolster food security at a time when COVID-19 is threatening to propel more people into hunger.

The study, which runs from 2017 to 2021, is funded by the Government of China and falls under the China-Africa South-South Cooperation arrangement.

“China has lots of experience growing rice and this collaboration with China is a first,” says UNEP ecosystems expert Levis Kavagi, who has been closely involved with the project.

Researchers have developed and tested over 50 varieties of rice in Ghana, Kenya and Uganda. They evaluated how the grains grow at different elevations and, importantly, how they taste.

WDR 73 also doesn’t need to be planted in a flooded paddy. That’s important for several reasons.

Transporting seedlings into flooded fields is a laborious process. Paddies are breeding grounds for malaria-carrying mosquitoes. Water shortages, sparked by climate change, are expected to make filling paddies a challenge in many countries. And paddies themselves vent massive amounts of methane –  up to 20 per cent of human-related emissions of the greenhouse gas, according to the Intergovernmental Panel on Climate Change.  

Growing rice on relatively dry land also reduces the ever-growing quest to open up wetlands, havens for birds and other animals, to farming.

“Usually the most suitable land for growing rice also tends to be next to, or in, wetlands or flood plains,” says Kavagi. “Expanding agricultural land involves draining the wetlands. This leads to loss of biodiversity, and reduced water purification and climate regulation services provided by wetlands.”

The ultimate goal of the project is to get a national certification of WDR 73, allowing it to be broadly disseminated to farmers. The project is part of a larger effort by China, African countries and UNEP to develop better rice varieties, improve livelihoods and bolster food security.

“The project shows that with new rice varieties it is possible to achieve the multiple objectives of food security, biodiversity and nature conservation – and fight against climate change,” says Kavagi.

Technical details of rice trials in Ghana, Kenya and Uganda

In Kenya, trials were conducted over three growing seasons in Mwea (central Kenya), Busia (western), and Mtwapa (coastal area). Rice variety WDR 73 performed well compared with the local Basmati varieties. The growth duration varied from 125 days in Mtwapa, to 150 days in Mwea and Busia, where the altitude is over 1,000m. Average grain yield was 5.1 to 9.0 tonnes per hectare. Plant height was 100-110 cm, which shows that this variety is tolerant to rice blast disease and displays good drought-resistant qualities compared to Basmati varieties.

In Uganda, WDR73 cultivation experiments were conducted in Lukaya, Luweero and Arua. In well-managed farms, grain yield increased from 4.35 to more than 6.0 tons per hectare. In Arua, in 2019 the rain-fed crop was direct sowed from 25-30 August and harvested from 30 November to 5 December. The growth duration was 90-95 days and yielded 4.35 tonnes per hectare. Direct seeded WDR 73 grain yield in Luweero in 2019 varied from 6 tonnes per hectare in rain-fed conditions to 8 tonnes per hectare in irrigated paddy fields.

In Bolgatanga, a drought-prone area in northern Ghana, WDR 73 growth duration was 105 days and plant height 110-120 cm, while the grain yield was 6.0 tonnes per hectare.

UN Environment

Continue Reading

Environment

Vietnam Signs Landmark Deal with World Bank to Cut Carbon Emissions

Published

on

Vietnam’s Ministry of Agriculture and Rural Development signed a landmark agreement today with the World Bank’s Forest Carbon Partnership Facility (FCPF), unlocking up to US$51.5 million for Vietnam’s efforts to reduce carbon emissions from deforestation and forest degradation between now and 2025. With this Emission Reductions Payment Agreement (ERPA) in place, Vietnam is expected to reduce 10.3 million tons of carbon dioxide emissions from six North Central Region provinces of Thanh Hoa, Nghe An, Ha Tinh, Quang Binh, Quang Tri and Thua Thien Hue to receive $51.5 million from the FCPF.

Vietnam has shown tremendous leadership in developing robust programs to deliver forest emission reductions at scale,” saidCarolyn Turk, World Bank Country Director for Vietnam. “This agreement marks the beginning of a new chapter for Vietnam, where new and significant incentives for forest protection and improved management are now in place to help the country meet its ambitious climate targets.”

Vietnam’s Emission Reductions Program is designed to address the underlying causes of forest loss in the country’s North Central Region and by so doing reducing emissions from deforestation and forest degradation. The program will also support forest restoration. The region was chosen for its critical biodiversity importance and socio-economic status. The program area covers 5.1 million hectares of land (16 percent of the land area of the country), of which 3.1 million hectares are currently forested, and includes five internationally recognized conservation corridors. It is home to approximately 10.5 million people, nearly one third of whom live below the national poverty line.

“Vietnam’s program follows a preparation phase that built our readiness to engage in an emission reduction payment agreement of this kind and is a step towards full implementation of forest carbon services in Vietnam. This agreement highlights the collaboration between Vietnam, FCPF and the World Bank to meet international climate targets laid out in the Paris Agreement,” said Ha Cong Tuan, Standing Vice Minister of Agriculture and Rural Development. “Our program will mobilize important additional financing to invest in our forests and reduce forest degradation while generating income for forest owners and improving sustainable development in the North Central Region.”

Vietnam is the first country in Asia-Pacific and fifth globally to reach such a milestone agreement with the FCPF. ERPAs are innovative instruments that incentivize sustainable land management at scale and help to connect countries with other sources of climate financing. The resources from the FCPF provide new opportunities to conserve and regenerate forest landscapes and biodiversity while simultaneously supporting sustainable economic growth, which is critical for Vietnam’s development going forward.

The Forest Carbon Partnership Facility (FCPF) is a global partnership of governments, businesses, civil society, and Indigenous Peoples’ organizations focused on reducing emissions from deforestation and forest degradation, forest carbon stock conservation, the sustainable management of forests, and the enhancement of forest carbon stocks in developing countries, activities commonly referred to as REDD+. Launched in 2008, the FCPF has worked with 47 developing countries across Africa, Asia, and Latin America and the Caribbean, along with 17 donors that have made contributions and commitments totaling US$1.3 billion.

Continue Reading

Publications

Latest

Trending