By Ed Struzik
On Coats Island, in northern Hudson Bay, thick-billed murres—members of the auk family—have been under assault on several fronts in recent years. Polar bears, faced with a sharp decline in the sea ice from which they hunt ringed seals, have retreated to the island and are eating the murres’ eggs. As the sea ice disappears, the murres now have to fly farther and work harder to get food that they normally find along the ice edges. And as temperatures around Hudson Bay rise, mosquitoes are hatching earlier in the season. So many mosquitoes have swarmed on Coats Island in recent years that some of the nesting murres have perished from blood loss, according to biologist Anthony Gaston of Environment Canada, who has been studying the murre colonies on the island since 1984.
Gaston believes that the toll these changes are taking on long-lived murres and their chicks will inevitably lead to a sharp decline and ultimate collapse of the island’s 30,000 breeding pairs. "Maybe not in my lifetime, but it will happen," says Gaston, who will retire in March. "These and other seabirds are superbly adapted to the sea ice environment. Without that ice, and with polar bears and mosquitoes hitting them hard, the only future in the Arctic for them is to move north."
Across the Arctic, resident birds such as the murres are experiencing increasing stresses that affect their foraging patterns and reproductive success. Researchers say that the gyrfalcon, the peregrine falcon, the willow and rock ptarmigan, the long-tailed jaeger or skua, and Ross’s and ivory gulls are in decline, as are some other birds that fly north to nest in the Arctic. In many cases, the birds’ prey—from lemmings, to snowshoe hare, to cod in the southern reaches of the Arctic Ocean—are experiencing population declines and shifts in their reproductive cycles.
"There’s no doubt that something is happening," says Dave Mossop, a biologist at Yukon College who has been studying birds in the Yukon for more than 40 years. "Kestrels here are declining so fast, it’s scary. As many as 60 percent of the adult peregrines we have in the Yukon haven’t even bothered nesting in recent years. Our gyrfalcons are breeding much later, seem to be producing fewer young, and are declining in abundance."
Scientists are working hard to understand why these cycles are changing, but many suspect that climate change is at least partially responsible. With springtime in the Arctic advancing by two or three weeks, snowshoe hares may not be losing their white coats fast enough to make them less vulnerable to predation in spring. Higher temperatures may be having an impact on vegetation that is critical for some birds, and warmer and shorter winters are resulting in snowfall and icing events that may not be conducive to lemming, vole and other rodent reproduction.
Predators such as the peregrine, the gyrfalcon, the snowy owl and the Greenland long-tailed skua depend on peaks in these prey species to reproduce in numbers that will sustain their populations. For these birds, collapsing prey cycles are bad news. A team of Danish scientists, for example, recently documented how a collapse in collared lemming cycles at two sites in Greenland between 1998 and 2010 resulted in a 98 percent decline in the snowy owl population. They also documented a similar, albeit less drastic, decline in the population of long-tailed jaegers, part of the skua family.
Mossop and others are convinced that this rush of protein that periodically flushes through the system during predator peaks is what drives these resident populations in the Arctic. "All Arctic creatures have to have sophisticated strategies in order to survive in this part of the world." he says. "Exploiting those peaks, I think, is part of the strategy."
According to Don Reid, a scientist for the Wildlife Conservation Society in the Yukon, early and deep snow provides the insulation that is necessary for lemmings to breed and produce enough young to account for the population peaks. Because snow conditions are declining or changing in some places in the Arctic, that insulation is being compromised, Reid says. Lemmings, as a result, cannot produce enough offspring to bounce back from the lows that follow heavy predation.
University of Alberta biologist Alastair Franke has unequivocal evidence of peregrine falcon nestlings starving to death on the west coast of Hudson Bay. But lack of food, he says, is not the main thing killing these birds. According to a recent study led by graduate student Alexandre Anctil of the University of Quebec, some regions of the Arctic are now experiencing more periods of heavy rain each summer when compared to the early 1980s. With their downy white coats insulating them against the snow and the cold, these chicks do just fine. When it rains heavily, however—as it has increasingly been doing along the west coast of Hudson Bay since 1980—up to a third of the peregrine chicks in the study area die of hypothermia as their wet feathers rapidly draw heat from their bodies. Some even drowned in their nests.
Anctil and Franke came to this conclusion by analyzing meteorological records dating back to 1980 and by placing nest boxes on cliffsides to provide shelter for some of the chicks. With the help of remote cameras, they discovered that sheltered chicks fared better than birds that were exposed to heavy rain events. All of this counters the good news for a species that has undergone a strong recovery after nearly being driven to extinction in the 1970s.
Acadia University biologist Mark Mallory has been watching this and other similar events unfold with concern for the fulmars, murres, black guillemots, and other year-round Arctic residents that he studies in the High Arctic. This past summer was an especially bad one for the birds Mallory studies. As happened with some regularity in the past, snow, ice, and cold conditions lingered for so long that the terns, gulls and jaegers at Nasaruvaalik Island didn’t even lay eggs. Mallory says that while the birds are adapted to deal with these occasional seasonal extremes, the overall warming trend is a real cause for concern. "What worries me is what’s happening in the southern parts of the Arctic," says Mallory. "If we see these ecosystem changes and rain events migrating north into the High Arctic, I don’t know how these birds are going to adapt."
For researchers, the problem in almost all cases is that there is a dearth of information about how Arctic birds and their prey are faring throughout the circumpolar world. The impact of climate change is often an indirect one, creating subtle mismatches between predator and prey that may be caused by changes in snow and vegetation, icing events, the arrival of an invasive species or the early melting of sea ice.
What’s more, climate change is not be the only reason some birds like the ivory gull are in trouble. For example, Mallory and colleague Grant Gilchrist of Environment Canada once thought that receding sea ice—which makes it increasingly difficult for these birds to forage for fish and marine invertebrates—was the main reason for the 80 percent decline that they documented in Canada’s ivory gull population since the 1980s. "Receding sea ice means that, just like bears having less time to hunt seals, there's less time for the gulls to follow bears and scavenge kills," says Mallory.
But now he and other scientists have evidence to suggest that high levels of mercury, which the gulls may be ingesting from foraging on seal carcasses left behind by polar bears, may also be a factor. "Mercury is something we think is a smoking gun," he says. "But because there are so few of the birds in Canada, it's tough to justify sampling to run experiments."
To get a clearer picture of what is happening in the Arctic, Mossop, Mallory and other scientists are attempting to set up international networks that can better track changes. Even with that, says Mallory, figuring out what is going on is still daunting.
"We have a very small population and few, widely distributed sampling sites (e.g. weather stations), so our baseline data is not too great," says Mallory. "Add to that the complex suite of threats that some of these species are facing simultaneously—climate change, contamination of food webs, alteration to migratory stopover sites and wintering habitats, competition with human fisheries for prey, industrial development in the Arctic, invasion of the Arctic by new parasites, diseases — and you can appreciate that trying to nail down a cause-and-effect explanation for what we are seeing is very tough."
Mallory says three things are needed to better understand these significant shifts in Arctic bird populations: interdisciplinary and international collaboration, a commitment to long-term studies, and the financial resources to do the work properly. "The commitment to long-term studies and the funding to do them properly is floundering," he says.
Laval University scientist Gilles Gauthier—who has spent the last quarter century leading a team of scientists studying the fauna and flora on Bylot Island in the eastern Arctic—cautions his colleagues not to read too much into short-term trends in animal cycles. But Gauthier says that when change happens in a simple food web such as the Arctic, it can occur abruptly, whether from declines in prey abundance, the appearance of new competitors or diseases, or changes in vegetation.
"The eastern Arctic where I work is still relatively cold compared to what is happening in Fenno-Scandinavia and Alaska and the western Arctic of Canada," says Gauthier. "That may account for the fact that on Bylot Island we are not seeing the big changes that are occurring elsewhere. What we do know, though, is that the warming that is coming will greatly exceed anything we have seen so far. In order to understand how plants and animals can adapt to constraints brought on by rapid change, we need to better understand these linkages between different species."
After ongoing pressure from environmental groups and Indigenous communities, Bank of America has said it will not finance any oil and gas exploration in the Arctic, making it the last major U.S. financial institution to do so.
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EcoWatch Daily Newsletter
By Astrid Caldas
As we reach the official end of hurricane season, 2020 will be one for the record books. Looking back at these long, surprising, sometimes downright crazy past six months (seven if you count when the first named storms actually started forming), there are many noteworthy statistics and patterns that drive home the significance of this hurricane season, and the ways climate change may have contributed to it.
A summary infographic showing hurricane season probability and numbers of named storms predicted from NOAA's 2020 Atlantic Hurricane Season Outlook. NOAA
The updated 2020 Atlantic hurricane season probability and numbers of named storms. NOAA
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By Dana Drugmand
An unprecedented climate lawsuit brought by six Portuguese youths is to be fast-tracked at Europe's highest court, it was announced today.
The European Court of Human Rights said the case, which accuses 33 European nations of violating the applicants' right to life by disregarding the climate emergency, would be granted priority status due to the "importance and urgency of the issues raised."
‘Protect Our Future’<p>Cláudia Agostinho (21), Catarina Mota (20), Martim Agostinho (17), Sofia Oliveira (15), André Oliveira (12) and Mariana Agostinho (8) are <a href="https://www.desmogblog.com/2020/09/03/youth-climate-lawsuit-portugal-33-european-countries" target="_blank">bringing the case</a> with nonprofit law firm Global Legal Action Network (<span style="background-color: initial;">GLAN</span>), arguing that none of the countries have sufficiently ambitious targets to cut their emissions.</p><p>Portugal recently sweltered through its <a href="https://www.ipma.pt/pt/media/noticias/news.detail.jsp?f=/pt/media/noticias/textos/resumo-clima-julho-20.html" target="_blank">hottest July in 90 years</a> and has seen a rise in devastating heatwaves and wildfires over recent years due to rising temperatures. Four of the applicants live in Leiria, one of the regions worst-hit by the forest fires that killed more than 120 people in 2017. </p><p>Responding to the development, André Oliveira, 12, said: "It gives me lots of hope to know that the judges in the European Court of Human Rights recognise the urgency of our case." </p><p>"But what I'd like the most would be for European governments to immediately do what the scientists say is necessary to protect our future. Until they do this, we will keep on fighting with more determination than ever."</p>
‘Highly Significant'<p>The decision represents a "highly significant" step, <a href="https://www.glanlaw.org/about-us" target="_blank">GLAN</a> Director Dr. Gearóid Ó Cuinn said in a <a href="https://youth4climatejustice.org/" target="_blank">press release</a>.</p><p>"This is an appropriate response from the Court given the scale and imminence of the threat these young people face from the climate emergency," he added. </p><p>By suing the 33 countries all together, the youths aim to compel these national governments to act more aggressively on climate through a single court order, which would potentially be more effective than pursuing separate lawsuits or lobbying policymakers in each country.</p><p>If successful, the defendant countries would be legally bound not only to ramp up emissions cuts, but also to tackle overseas contributions to climate change including those of their multinational enterprises.</p>
‘Major Hurdle’<p>The <a href="https://youth4climatejustice.org/the-case/" target="_blank" rel="noopener noreferrer">countries targeted</a> include all of the European Union member states as well as Norway, Russia, Switzerland, Turkey, Ukraine and the United Kingdom, none of which are currently aligned with <a href="https://www.ecowatch.com/tag/paris-agreement">Paris agreement</a> target to limit global temperature rise to well below 2 degrees C (3.6 degrees F) and pursue a limit of 1.5 degrees C (2.7 degrees F).<a href="https://climateactiontracker.org/countries/" target="_blank" rel="noopener noreferrer"> </a></p><p><a href="https://climateactiontracker.org/countries/" target="_blank" rel="noopener noreferrer">Climate Action Tracker rates</a> most of Europe as "insufficient" in terms of its emissions reduction policies based on the Paris target, while Ukraine, Turkey and Russia are assessed as "critically insufficient" – meaning they are on track for a warming of 4 degrees C or higher.</p><p>The European Union has pledged to slash its emissions by <a href="https://ec.europa.eu/clima/policies/eu-climate-action/2030_ctp_en" target="_blank" rel="noopener noreferrer">at least 55 percent by 2030</a>. But the Portuguese youth plaintiffs are calling for cuts of at least 65 percent by 2030, a level that <a href="http://www.caneurope.org/energy/climate-energy-targets" target="_blank" rel="noopener noreferrer">European climate campaigners say</a> is necessary to meet the 1.5 degrees warming limit.</p><p> The 33 countries must each respond to the youths' complaint by the end of February, before lawyers representing the plaintiffs will respond to the points of defense. </p><p>"Nothing less than a 65 percent reduction by 2030 will be enough for the EU member states to comply with their obligations to the youth-applicants and indeed countless others," Gerry Liston, legal officer with GLAN, said in a press release.</p><p>"These brave young people have cleared a major hurdle in their pursuit of a judgment which compels European governments to accelerate their climate mitigation efforts."</p><p><span></span><em>Reposted with permission from <a href="https://www.desmogblog.com/2020/11/29/court-advances-landmark-youth-climate-lawsuit-against-33-european-nations" target="_blank">DeSmog</a>. </em></p>
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By Liz Kimbrough
Six grassroots environmental activists will receive the prestigious Goldman Environmental Prize in a virtual ceremony this year. Dubbed the "Green Nobel Prize," this award is given annually to environmental heroes from each of the world's six inhabited continents.
Kristal Ambrose, the Bahamas<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDg0NzI3MC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY1MDM5NTk5MX0.fdMrrUqf0HvWq0Uh0Ii3mXxJczHPyN1jcnSsQoXoerE/img.jpg?width=980" id="b9e66" class="rm-shortcode" data-rm-shortcode-id="b8b8777f7964bb7100672b3be0abf3fe" data-rm-shortcode-name="rebelmouse-image" />
Kristal Ambrose. Goldman Environmental Prize
Chibeze Ezekiel, Ghana<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDg0NzM2MS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY1MTgzOTE3OX0.KoEZr3oMPKbeG2uT8q-ZsGPOGtIZ3l6V6NXEK5U90FU/img.jpg?width=980" id="65224" class="rm-shortcode" data-rm-shortcode-id="6ec640a8ba56a4db22b57e4f8734a7a4" data-rm-shortcode-name="rebelmouse-image" />
Chibeze Ezekiel. Goldman Environmental Prize
Nemonte Nenquimo, Ecuador<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDg0NzM2Ny9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYwNzYxODYwM30.cys5ZsFGd75UcjybADGBPFt20jrzgrsFujoj_qMTK4E/img.jpg?width=980" id="96b5a" class="rm-shortcode" data-rm-shortcode-id="0778ab7334e3297e0ead52d5fd1499e5" data-rm-shortcode-name="rebelmouse-image" />
Nemonte Nenquimo. Goldman Environmental Prize
Leydy Pech, Mexico<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDg0NzQwNy9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NzkzOTYzOH0.uHlN2FQoJJ_KFJWTn4oL__lDyjA0-HDnxewBhwgQRVg/img.jpg?width=980" id="9ab07" class="rm-shortcode" data-rm-shortcode-id="ccc347126d4ce9ddbb3b9c1b4673391b" data-rm-shortcode-name="rebelmouse-image" />
Leydy Pech. Goldman Environmental Prize
Lucie Pinson, France<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDg0NzQxMS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY2NzE0NTU1NX0.OutmX3sfl4pMaoYssTQ4zk7Y14_hans7-Z-0B0xsjfM/img.jpg?width=980" id="4bcd7" class="rm-shortcode" data-rm-shortcode-id="4bff14750dc0a70fc79e9484ea2bdbd4" data-rm-shortcode-name="rebelmouse-image" />
Lucie Pinson. Goldman Environmental Prize
Paul Sein Twa, Myanmar<img lazy-loadable="true" src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDg0NzQxNS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY1NDAyNjU0MH0.DHrKykngmcJyJ5rn4r91ANH7FmQ7Us6ZMEOis8yAzGY/img.jpg?width=980" id="8fa36" class="rm-shortcode" data-rm-shortcode-id="0e703d62288df00931cd678c861c6e0b" data-rm-shortcode-name="rebelmouse-image" />
Paul Sein Twa. Goldman Environmental Prize
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