Authors: Miklos Gaspar & Lucas Smalldon*
The first-ever comprehensive study on the concentration of radionuclides and trace elements in Namibia’s coastal waters revealed that while radionuclide levels are very low, there is an indication of higher than usual concentration of certain trace elements. Further study is required to determine whether these are the result of human activity along the coast or are due to the underlying geology, according to a scientific report delivered by the IAEA to the Government of Namibia in late 2017, based on research carried out at the Government’s request.
“The IAEA report provides excellent information about the current status and can be used as the basis for future monitoring activities,” said Axel Tibinyane, Director of Namibia’s National Radiation Protection Authority. “As marine resources contribute significantly to our national development, it is imperative that they be used sustainably. The report will help us do that.”
Following this preliminary research, the IAEA will continue to provide support to the Government to gain better insight into the high trace element levels.
In addition to the country’s increasing population, uranium, gold and diamond mining, as well as industrial activity, are on the rise and there is a growing interest in seabed mining for phosphates. Namibia is among the world’s top five uranium producers. To assess any impact on the environment of this increased level of human activity, a baseline needs to be established, as some of these undertakings could result in increased levels of radionuclides and trace elements. The data in the report can provide such a baseline.
“This project is the first of its kind and has provided new information on the Namibian shelf,” said Deon Louw, the marine scientist in charge of the study at Namibia’s Ministry of Fisheries and Marine Resources. “We need this knowledge to monitor and protect our marine ecosystem as human activity continues to rise.”
Increased coastal activities mean that new regulations are needed to monitor and manage natural and human-caused (or anthropogenic) radionuclides and trace elements that may contaminate the marine ecosystem, with potential impact on seafood, local populations and the economy.
Namibia’s coastal waters support a rich biodiversity and stretch along the south Atlantic’s turbulent Benguela current for over 1500 kilometres. Much of the coastline is a marine protected area, which is considered unpolluted. It is part of the northern Benguela large marine ecosystem — one of the most productive coastal ecosystems in the world — and supports valuable fisheries and mariculture industries. It is a highly dynamic environment: strong winds, seething currents, and underwater sulphur eruptions surround rich stocks of fish, plankton, and other marine life, including the world’s largest bacteria — visible to the naked eye.
Despite all this activity, little was known about Namibia’s levels of marine radioactivity and trace elements until now.
At the request of the Ministry of Fisheries and Marine Resources, in 2014 the IAEA began collecting a diverse range of marine samples off the coast. Over 500 samples were gathered, including sediment, seawater, fish, mussels and seaweed. Several thousand measurements were performed on the samples. More than 40 researchers from 11 institutions in six countries participated in the research project.
In addition to providing baseline measurements for ongoing pollution assessment and regulation, radionuclides and trace metal isotopes can serve as tracers to better understand oceanographic and pollution processes (see Studying the oceans through isotopes). The study of lead isotopes, for example, can help assess whether the lead is present naturally or as a result of human activities. Lead’s isotopic signature can also provide information on the sources of pollutants.
“This research not only helps Namibia, but will also continue to add international scientific value by improving knowledge of global patterns of marine pollution,” said Martina Rožmarić, a research scientist at the IAEA Environment Laboratories. “In studying the presence of natural and anthropogenic radionuclides and trace elements, such as lead, mercury, copper, and cadmium, off Namibia’s seaboard, we are filling in a critical knowledge gap on the world map.”
Studying the oceans through isotopes
The concentration of radionuclides (natural and anthropogenic), trace elements and rare earth elements is difficult to measure. But measuring the levels of these substances and tracing them to their sources is central to understanding the state of the marine environment.
Several anthropogenic radionuclides can be detected at ultra-low levels; some, like the iodine isotope I-129 and the uranium isotope U-236, can be used as radiotracers to study oceanographic processes such as the movement of water masses or pollutants in the oceans and to improve the accuracy of marine dispersion models. Just like a colourful dye that can be observed in a water mass to see where it goes, these radionuclides have a unique signature that researchers can track to study different currents and see how fast it takes them to go from one part of the globe to another.
These isotopes are decaying slowly, which makes them a reliable tracer of natural processes, such as the circulation and mixing of water masses. But U-236 concentrations in the oceans are extremely low and can only be measured using highly sensitive accelerator mass spectrometry, which enables monitoring of ratios between U-236 and U-238, a more abundant natural isotope. In the Namibian project, these measurements were carried out at an IAEA collaborating centre, Spain’s National Centre of Accelerators in Seville.
*Lucas Smalldon, IAEA Department of Nuclear Sciences and Applications
This article was featured in the IAEA Bulletin, March 2018.
Restoring the Caribbean to the paradise it used to be
When people think of the Caribbean, it’s the turquoise seas, clean beaches, coral reefs teeming with fish, turtles and balmy breezes that come to mind.
For us, this paradise is what we call home. We depend upon its riches for sustenance and, often, to make a living. It is the origin of much of the pride we feel when we say we are from the Caribbean.
Increasingly however, the reality does not live up to expectations—we may arrive at the seashore to find it covered with sargassum, the water cloudy and brown, and the horizon covered in trash; the coral reefs may look faded and tired and with barely enough fish to count on one hand…
For visitors, what version of the paradise they may find is becoming unpredictable and some may never return, depending on their experience.
For locals, it’s a different matter—as seafood prices go up and children develop rashes after swimming in the ocean, and as houses flood after each storm and tourists turn their backs on the islands, the paradise is increasingly looking less idyllic.
Sounding a wake-up call to protect the reefs
More than 100 million people in the wider Caribbean region live on, or near the coast in a complex ecosystem with the highest number of marine species in the Atlantic Ocean.
Shallow-water coral reefs, mangroves, seagrass beds, lagoons, estuaries and beaches as well as coral banks and rocky outcrops in deep waters together make up the coral reef sub-ecosystem, the richest in biodiversity in the wider Caribbean region.
Almost 10 per cent of the world’s coral reefs are found in the Caribbean Sea and Gulf of Mexico, and 45 per cent of the fish species and 25 per cent of the coral species are found nowhere else in the world. With an area of 10,429 square kilometres of mangrove forest, the adjacent North Brazil Shelf has the highest mangrove coverage of any large marine ecosystem.
This wide ecosystem supports three of the region’s major fisheries—reef fish, spiny lobster and conch—and is the foundation of the region’s tourism industry. Coral reefs, mangroves and seagrass beds also play an important part in coastal and shoreline protection under normal sea conditions as well as during hurricanes and tropical storms.
A 2016 study by the World Bank put the economic value of the Caribbean Sea alone at US$407 billion per year. Yet this precious ecosystem is at the heart of competing economic and social demands as well as natural stresses and threats.
Pollution from activities on land and at sea degrades and destroys the reef. Many once-abundant species are now threatened or endangered.
Hurricanes are becoming more frequent and more severe, resulting in great destruction and loss of lives, leaving both the coastline and local communities more vulnerable to future shocks.
A strategy to keep it pristine
Since 1981, UN Environment’s Caribbean Environment Programme has been working with the region’s national governments to better manage and use coastal and marine resources.
Following the establishment, in 1983, of the Cartagena Convention—the only legally binding agreement for the protection of the Caribbean Sea—the programme has relentlessly worked to gain acceptance of, and agreement upon, three protocols or agreements to combat oil spills [the Oil Spills Protocol] coastal and marine biodiversity [the Specially Protected Areas and Wildlife Protocol] and pollution [the Land Based Sources of Marine Pollution Protocol] among its 28 member states and 14 territories.
As a result of the analysis of the wider Caribbean region conducted between 2007 and 2011 by the joint United Nations Development Programme and Global Environment Facility’s Caribbean Large Marine Ecosystem Project (2009–2014), the coral reef sub-ecosystem was given priority in a regional strategy to address transboundary problems that compromise the ability of the Caribbean Sea and the region’s living marine resources to support social and ecological well-being and resilience.
In the last two years, the Specially Protected Areas and Wildlife Protocol, together with the Caribbean and North Brazil Shelf Large Marine Ecosystems Project 2015–2020, published the Report on the State of Marine Habitats in the Wider Caribbean, which then became the basis for the Regional Strategy and Action Plan for the Valuation, Protection and/or Restoration of Key Marine Habitats in the Wider Caribbean 2021–2030. The strategy recommends a series of measures to support the people, economies and ecology of the region, targeting coral reefs, mangroves and seagrass beds in particular.
Using an integrated approach, participating governments and stakeholders from academia, civil society, the private sector, and regional and global agencies are working together to enhance management and conservation of the coral reef sub-ecosystem in support of sustainable development.
UN Environment’s Caribbean Environment Programme, as Secretariat of the Specially Protected Areas and Wildlife Protocol, has been working to revamp the Caribbean Marine Protected Areas Managers Network and establish a regional wildlife enforcement network, in efforts to improve marine biodiversity management. Assisting the region and its countries in co-executing the strategic action plan is another important step in this direction. The Caribbean Environment Programme is driving the process, building the alliances needed to ensure the integrity of Caribbean coral reefs, seagrass beds and mangroves, in the hope to bring back the paradise we all expect.
The Perilous Migration of Birds through Cities
How many birds flying into buildings die,
Thinking the glass reflection is the sky. — with a nod to Kansas poet Madeleine Aaron
Bird migration is a wondrous and majestic phenomenon. One may witness flocks of colorful songbirds sweeping the skies, geese gliding in a V-shape of beautiful symmetry, or a great hawk soaring above and diving for prey at 120 miles per hour.
About half of all birds in the world migrate, and even the smallest may travel remarkably long distances. Incredibly, the tiny hummingbird can fly nonstop 600 miles over the Gulf of Mexico. Some round-trip migrations can wind their way for as long as 44,000 miles.
Most songbirds migrate at night, and nocturnal travel makes their journey particularly perilous in light of human development. Birds face many obstacles along the way, including extreme weather events and lack of habitat. Yet, one particularly tragic and preventable peril remains: human-made structures.
Scientists estimate an astounding upper-level figure of 1 billion birds that die in the U.S. each year from building collisions. Making matters worse, 40 percent of the world’s bird species are already in decline. In the last decade alone, four birds became extinct and four more are “on the verge of extinction.” Nearly one in five bird species in Europe is at risk of extinction.
Artificial light from buildings draws migratory birds like a beckoning siren, luring them toward lit cities where skyscraper glass reflections are plentiful and deadly. What appear to be skies and trees turn out to be deceptive reflections, and as the birds glide toward the images, they slam into glass. Many are killed instantly, while some are seriously wounded.
Scientists at the Cornell Lab of Ornithology have investigated light pollution and bird migration patterns in major U.S. cities to determine where collision risks are highest. They report that the median light exposure to birds in cities is 24 times higher than the countrywide average. Chicago tops the list of dangerous U.S. cities for birds, followed by Houston and Dallas. This is true for both fall and spring migrations. Other dangerous metropolises include New York, Minneapolis, St. Louis and Los Angeles.
The central region of the U.S. happens to be a superhighway for bird migrations. Every spring and fall, over 5 million migrating birds comprised of 250 species pass over Chicago, where the city’s glass skyscrapers and artificial light become a death trap. Scientists from the Field Museum in Chicago have been counting dead birds at just one building (McCormick Place) since 1978. By 2002, the numbers had totaled 29,842 birds from 140 species. Chicago clearly has to be a major focus for conservation efforts during migration periods, as should the other hazardous cities identified in the study.
Another useful lesson from the Cornell study is one of timing, and this can help birds in many geographic regions of the U.S. Particularly crucial is the ability to pinpoint specifically when the birds face the greatest risks in each region. Fine-tuning the weeks when help is most needed can have a substantial impact on saving birds.
Researchers discovered that while a migration may continue over a six-month period, it “occurs in sporadic waves,” with the vast majority of birds passing through dangerous locales on just a few nights. Half of all migratory birds each season passed a metro location on approximately 7 to 10 nights during their migrations. This means helping birds, even for a period as short as a week, can have a significant impact. Really though, we must do more.
How Can We Lower the Rate of Bird Collisions?
For low-rises and high-rises, minimizing artificial window light is highly beneficial. This can be done by turning out the lights at night, drawing curtains and blinds, using a small lamp on a table rather than bright ceiling lights and introducing lights with motion sensors in office buildings.
Additionally, participating in Lights Out projects during peak migration times saves many birds. For the average reader, this is as simple as turning the lights out after 11 pm during fall and spring migration months. For building owners, minimizing exterior lighting is also essential. Lights Out programs are being organized in many major cities and have saved thousands of birds. A two-year study by the Field Museum using McCormick Place in Chicago found that turning off the lights resulted in an 83 percent reduction in bird window-collision deaths.
Chicago Bird Collision Monitors rescues injured birds and counts fatalities each morning during migration. Notably, they rescued an injured peregrine falcon (on the endangered list) that was restored to health and released. “We know that before all buildings were participating consistently in Lights Out, there was a foggy night in 2002 when many birds were migrating where a single building was reported to kill over a thousand birds in one evening,” said Annette Prince, the program’s director. “Chicago Bird Collision Monitors worked with buildings to get better participation in Lights Out and by 2004, saw 100 percent participation in light reduction so that subsequently we have never had a single building kill so many birds at once.”
The Cornell Lab of Ornithology has a live bird migration map, so one can view in real time when birds are migrating through one’s locale and be cognizant of light pollution during peak days. It is important to note that turning lights out whenever possible is also beneficial outside of migration periods, as scientists have shown that substantial numbers of collisions can and do occur outside of migration periods, even in winter.
Bird-friendly architecture for new construction is essential, as is mandatory legislation. Additionally, adding bird-safe architecture to green building certification standards is recommended by scientists. The extent to which architectural changes can affect bird collision incidence is illustrated by the recent renovation of New York’s Javits Center – a building previously responsible for the most bird deaths per year in New York. To help mitigate the problem, architects replaced dark-mirrored glass with glass that had a subtle fritted pattern, and also added a green roof for nesting. The project was a remarkable success, reducing bird collisions by 95 percent. Other architectural strategies are installation of UV-coated glass, translucent glass and indented windows with shutters. Legislation requiring implementation of these strategies is crucial to saving birds from collisions.
Chicago proposed bird-friendly building legislation at the beginning of the year. The ordinance would limit the percentage of transparent or reflective glass that can be used in new and renovated construction exteriors. Specifically, it would require that from the ground to 36 feet up, at least 95 percent of the exterior cannot be covered in glass, or must use glass containing frosting, etching or screens. Nonessential exterior lighting would also be required to automatically shut off after 11 pm. Chicago’s legislation was introduced by Alderman Brian Hopkins and is supported by Bird Friendly Chicago. It is expected that real estate developers will oppose the bill. Michael Cornicelli, executive vice president of the Building Owners and Managers Association of Chicago, communicated that the portion of the bill requiring adoption of bird-friendly architecture to renovations of existing buildings would be “a potential sticking point.” San Francisco and Toronto already have bird-friendly legislation in place to serve as a model.
On a national level, U.S. Rep. Mike Quigley, a Democrat who is also a Chicago resident, has reintroduced the Bird-Safe Buildings Act (H.R. 919), which he has tried four times to pass since 2010. Dr. Christine Sheppard, director of American Bird Conservancy’s Glass Collisions Program, notes, “The legislation would help address one of the greatest human-caused threats to birds. Although this legislation is limited to federal buildings, it’s a very good start that could lead to more widespread applications of bird-friendly designs and use of bird-smart glass solutions.”
When enacted, these bills will reduce bird collision deaths, and in the next few months, we will see how they fare.
In the meantime, researchers recommend that residents take a few of the following precautions to help minimize window collisions: angling windows to reduce reflection, keeping indoor vegetation away from windows, installing netting, ultraviolet-reflecting glass or decals spaced closely together. And of course, simply turning out the lights helps.
These same strategies can be used in any city around the world where migratory birds traverse. Collectively, we can reduce the incidence of bird collisions and help the many already threatened species to have a better chance of survival.
In the coming months, look to the sky and around you. Stop awhile and you will hear birdsong, more in the morning but also during the day; wee warblers with deceptively loud melodies, cardinals singing their sweet song, and if you look carefully you might catch a glimpse of a puff of bright yellow, the source of that surprising volume. These and others are growing families and enriching our lives before they prepare for the thousands of miles long autumn journey to their winter homes.
Author’s note: first published in Truthout.org
How we unlock transformational change to save our Forests
Back in May, the Tropical Forest Alliance (TFA) hosted its Annual Meeting in Bogotá, Colombia’s high-altitude capital, which brought together 300 leaders from the worlds of business, government and civil society. As well as having an acute awareness of the importance of forests in solving our global climate and biodiversity crises, they have a huge weight of collective influence.
The meeting was invigorating. It was upbeat. Yet it also zeroed-in on the considerable challenges we still face. And I think everyone left with a real sense of urgency and a determination to stop the ecocide.
If you were there, I need to thank you, once again, for contributing. If not, I want to give you a quick update on the tenor of the discussions, and three commitments we made.
So, first, the meeting itself.
It was great to be in Bogotá, to be co-hosted by the Colombian Government, and to hear directly from the President about his determination to address deforestation. The country has committed to a US$20 million fund to promote low-carbon investment, and to eliminate deforestation from meat and dairy production. And, beyond halting deforestation, there is a strong intention to reverse the process – by restoring hundreds of thousands of acres of degraded land and planting 180 million trees.
A central theme was the promise of jurisdictional or landscape-based approaches, which address the economic viability of rural economies. And we heard from stakeholders from several regions that are making real progress, like Indonesia’s Siak district, and Colombia’s Department of Caqueta.
These jurisdictional approaches are not new. But they have emerged as an effective way to complement the type of supply chain initiatives that have traditionally been the focus of the TFA community. We are therefore convinced that the most effective thing we can do going forward is catalyse collective action in the world’s key production landscapes.
A clear pace setter is the Mato Grosso region in Brazil and its Produce, Conserve, Include (PCI) platform and strategy. First launched in 2015, the PCI is helping the region’s vast but often impoverished agricultural economy to co-exist with the 60% of remaining forest cover. And a new innovation, supported by several NGOs, is the PCI “Pitch Book” – a menu of readymade, plug-and-play solutions for businesses to actively engage in the landscapes from which they are sourcing.
Of course, it wasn’t all good news. The latest Global Forest Watch figures were shared, and the overall picture is not good. Although the 2018 rate of deforestation fell back from the 2016 and 2017 peaks, 12 million hectares of tree cover were lost, and the underlying three-year trend is still heading upwards, with some deeply worrying incursions into protected forest areas and indigenous lands. However, a reason to be optimistic is the situation in Indonesia, where deforestation has all but stopped – demonstrating the success of its national and regional initiatives and providing inspiration to the wider forest community.
China’s attitude to commodity supply chains and deforestation was another strong theme, and we were delighted to announce that the TFA is launching a programme of activity to support the Chinese Government ahead of the UN Biodiversity Conference in Kunming in 2020. Against this backdrop, we believe there is a clear rationale and opportunity for the Chinese state to engage in the forest debate and wield its considerable influence.
Accelerating into 2020 and beyond
We closed the meeting with three commitments:
-The consensus from Bogotá was the need for system-level change. For example, there were clear calls for the creation of a Global Accord on Commodity Sourcing. Brokering such an agreement falls outside of the TFA’s traditional remit, but we will explore what such an accord may look like and how it could be pursued.
-There was strong endorsement for the TFA to continue to catalyse collective action on jurisdictional initiatives. By complementing (but not substituting) supply chain actions, this promises to be transformational.
-We all need to accelerate towards 2020, making what progress we can, whilst also framing a compelling post-2020 agenda. For example, we will consult across our membership to broker a consensus. We will also continue to highlight the effectiveness of jurisdictional leadership – aiming for the subject to be high on the agenda at the UN Climate Action Summit in New York this September.
Finally, we confirmed that the next TFA meeting will take place in Indonesia – a country that has done more than any in the last few years to reduce deforestation, although significant challenges do remain.
A lot needs to happen in the intervening 12 months. Everyone in the forest community needs to be held to account, and we are only going to accelerate progress by working better together. So let’s be humble about what we have achieved, let’s be frank about the challenges, and let’s agree on a compelling vision for a #ForestPositive future.
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