Bison Reintroduced to Banff National Park for First Time in 140 Years
By Elizabeth Wartenkin
Immense herds of up to 30 million bison once thundered across the plains of North America. Like their American brethren, overhunted Canadian plains bison came dangerously close to extinction in the late 1800s. In an effort to reverse the damage, Parks Canada on Feb. 1 successfully restored 16 healthy bison—transporting them the 280 miles from Elk Island National Park, 30 miles east of Edmonton, Alberta, to their original, rightful home on the eastern slopes of Banff National Park.
Yellowstone National Park Sends Hundreds of America's Last Wild Buffalo to Slaughter https://t.co/QRxyJpQdEX @earthhour @greenpeaceusa— EcoWatch (@EcoWatch)1486770904.0
This is the first step in a five-year pilot project to reintroduce the animals to the Banff wilderness. For 16 months, this initial little herd—consisting of six two- to three-year-old bulls and 10 two- to three-year-old pregnant heifers—will be kept in an enclosed pasture in Banff's Panther Valley. Project Manager Karsten Heuer and his team at Parks Canada expect that, after having twice calved, they will release the herd into a larger, 1,200 square kilometer (463 square mile) zone in summer 2018. There, they will be free to interact with other native species and to forage for food. The idea, said Heuer, is "to anchor these initial animals to this new landscape, so they adopt it as their new home and range."
In 2022, Parks Canada will reevaluate the project and, if long-term bison restoration to the area is deemed feasible, develop a management plan from there. "If we didn't think there was a good chance of this working I don't think we ever would have started," Heuer said, acknowledging that if necessary for population control, Parks Canada may ultimately have to consider pulling animals out and allowing for hunting. In that case, he said priority would be given to local First Nations groups (as Canada's indigenous peoples are known), and is careful to add, "But that's not the emphasis—our intent isn't to create a population for hunting opportunities."
Once a key source of food, clothing, shelter, and religious symbolism, bison carry great spiritual and cultural meaning for the First Nations. With the 19th-century massacre of the bison herds came the end of an entire way of life. In fact, so significant is the bison to the North American and indigenous story that in recording the continent's past, historians tend to differentiate between "bison" and "post-bison" eras.
The emblematic plains animals were once a "keystone species" in Banff, said Heuer. Bringing them back will help restore the ecological integrity of the Canadian great plains, referred to locally as "the prairies." Depending on how well the Banff bison herd survive and reproduce, wolves, which once relied on bison herds as a primary food source, will be able to do so once again. Other species would benefit, too—hulking, woolly bison graze heavily on native grasses and disturb the soil with their hooves, triggering an ecological process that helps many plant and animal species flourish. Prairie dogs, for instance, prefer to make their homes in or near bison-grazed areas, as the short grass affords a lookout for hungry predators.
Indigenous groups—many of which have played a role in bison reintroduction projects on both sides of the U.S.-Canada border—express uniform enthusiasm for the Banff initiative. Independent of government efforts, many have formed pro-reintroduction alliances. In 2014, eight nations (or tribes) signed a Buffalo Treaty in Montana, which commits signatories to bison restoration. Other nations have since signed on. In September 2016, the American Bison Society held their fifth annual week-long conference in Banff, marking their first summit in Canada. Upon February's announcement of bison reintroduction in Banff, Leroy Little Bear, a Blood Tribe member integral to the Buffalo Treaty, told the Calgary Herald, "The restoration of wild bison to Banff National Park is a great leap forward for buffalo peoples."
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Banff is not the first place in Canada where plains bison have been reintroduced, but as Heuer notes, there are unusual components to this plan. "We've reintroduced them into an area [Banff] that has all their native predators, which is really rare," he said. "Other than Yellowstone and Prince Albert National Park in Saskatchewan and a herd up in northeastern B.C. [British Columbia] called the Pink Mountain Herd, there are no other plains bison populations in North America that actually are interacting with the full suite of native predators."
Heuer reports that working on the reintroduction project with various representatives from First Nations was "invigorating" for all parties. "I think part of the reason why our translocation went as well as it did… is because with the First Nations partners, there was a lot of spiritual preparation. We had numerous blessing ceremonies." On Jan. 29, the Samson Cree Nation hosted a send-off ceremony at Elk Island National Park, and several other First Nations celebrated the bison's return to Banff, too.
Nonprofit conservationists are also excited about the Banff reintroduction. "One of the things national parks are supposed to do is to conserve our ecological heritage," said wildlife ecologist Dr. Jodi Hilty, president of Yellowstone to Yukon Conservation Initiative, a joint Canada-U.S. nonprofit organization that connects and protects wildlife habitats. "And that includes ensuring that all the species that should be there are persisting, now and into the future. In the case of bison, they're 'ecosystem engineers,' if you will. They actively impact the landscape."
Not everyone, however, is so effusive. Local ranchers initially worried that the bison could escape from their current enclosure, damage property, or spread disease to livestock. Members of the Alberta Fish and Game Association (AFGA) were also strongly opposed, arguing in 2015 that "the experiment is ill-founded, has no environmental integrity and has little value to Canadians." However, Parks Canada has done due diligence in terms of disease testing and quarantining, and representatives have met with both AFGA and the Alberta Beef Producers to alleviate their concerns, even committing to slaughtering the herd if necessary. However, Heuer and his team hope it won't come to that. "It's taken a lot of time," he said, "and we finally have hooves on the ground." For now, Parks Canada observes and monitors the bison. After a period of managing the animals in such heavy-handed fashion, Heuer said the hope is that the herd will ultimately revert to bison's "tremendous wild instincts."
As the old cliché goes, it is only once we've lost something that we realize how valuable it was. The Banff project, along with other wildlife reintroductions—such as the recent scimitar-horned oryx in Chad or the Iberian lynx in Spain—offer multi-pronged opportunities: a chance to make amends for past mistakes, and an occasion to make a solid commitment to the future of the planet.
"It's fairly high-cost to try to bring something back what you've already lost," noted Heuer, adding that such endeavors are also labor-intensive. "By far, the more efficient and better approach... is to maintain the land's ecological integrity so that you don't have to restore it. I would really caution people from going down the road of thinking, 'You know, it's no big deal if we lose things because we have the power and the technological prowess to bring them back.'"
Reposted with permission from our media associate SIERRA Magazine.
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For some combat veterans, the Fourth of July is not a time to celebrate the independence of the country they love. Instead, the holiday is a terrifying ordeal. That's because the noise of fireworks – loud, sudden, and reminiscent of war – rocks their nervous system. Daily fireworks in many U.S. cities in recent weeks have no doubt been interfering with the sleep and peace of mind of thousands of veterans.
What Is PTSD?<p><a href="https://theconversation.com/veterans-refugees-and-victims-of-war-crimes-are-all-vulnerable-to-ptsd-130144" target="_blank">PTSD</a> can occur when someone is exposed to extreme exposure traumatic experience. Typically, the trauma involves a threat of death, serious injury, or sexual violence. Along with war veterans, it happens to refugees; to victims of gun violence, rape and other physical assaults; and to survivors of car accidents and natural disasters like earthquakes or tornadoes.</p><p>PTSD can also happen by witnessing trauma or its aftermath, often the case with <a href="https://www.psychiatry.org/patients-families/ptsd/what-is-ptsd" target="_blank">first responders</a> and <a href="https://www.psychologytoday.com/us/blog/the-many-faces-anxiety-and-trauma/202006/invisible-wounds-the-frontline-heroes" target="_blank">front-line workers</a>.</p><p>All this adds up to tens of millions of Americans. Up to 30% of combat veterans and first responders, and 8% of civilians, <a href="https://www.ptsd.va.gov/professional/treat/essentials/epidemiology.asp" target="_blank">fulfill the diagnostic criteria for PTSD</a>. And that criteria is not easily met: symptoms of PTSD include nightmares, flashbacks, intrusive trauma memories, difficulty sleeping, avoidance of reminders of trauma, negative emotions, and what we call "hyperarousal symptoms."</p>
Fireworks Can Trigger Flashbacks<p>Hyperarousal, a core component of PTSD, occurs when a person is hyper-alert to any sign of threat – constantly on edge, easily startled and continuously screening the environment.</p><p>Imagine, for instance, stepping down the stairs in the dark after hearing a noise; you're worried an intruder might be downstairs. Then a totally unpredictable loud sound explodes right outside your window.</p><p>For people with PTSD, that sound – reminiscent of gunfire, a thunderstorm or a car crash – <a href="https://theconversation.com/veterans-refugees-and-victims-of-war-crimes-are-all-vulnerable-to-ptsd-130144" target="_blank">can cause</a> a panic attack or trigger flashbacks, a sensory experience that makes it seem as if the old trauma is happening here and now. Flashbacks can be so severe that combat veterans may suddenly drop to the ground, the same way they would when an explosion took place in combat. Later, the experience can trigger nightmares, insomnia or worsening of other PTSD symptoms.</p><p>Those of us who set off fireworks need to ask ourselves: Are those few minutes of fun worth the hours, days, or weeks of torment that will begin for some of our friends and neighbors – including many who put their lives on the line to protect us?</p>
Who Else Is Affected?<p>Millions of others, though not diagnosed with PTSD, may similarly be affected by fireworks. <a href="https://adaa.org/about-adaa/press-room/facts-statistics" target="_blank">One in five Americans</a> have an anxiety disorder, many with symptoms of hyperarousal. Also impacted are those with autism or developmental disabilities; they find it difficult to cope with the noise, or just the drastic change from life routines. Then there are people who have to work, holiday or not: nurses, physicians and first responders, who have to be up at 4 a.m. for a 30-hour shift.</p><h3>How to Reduce the Negative Impact</h3><p>There are ways to reduce how fireworks affect others:</p><ul><li>For those with PTSD, the unexpected nature of fireworks is probably the worst part. So at least make it as predictable as possible. Do it in designated areas during designated times. Don't explode one, for instance, two hours after the designated time window. And avoid setting them off <a href="https://www.theguardian.com/society/2018/jul/04/fireworks-ptsd-fourth-of-july-veterans-shooting-survivors" target="_blank">on the 3rd</a>. People are less prepared then.</li><li>If you're aware that a veteran or trauma survivor lives in the neighborhood, move the noise as far as possible from their home and give them prior warning. Consider putting a sign in your front yard noting the time you'll set the fireworks.</li><li>Remember, it doesn't have to be super loud to make it fun. Consider using <a href="https://thehill.com/opinion/energy-environment/504964-its-time-for-silent-fireworks" target="_blank">silent fireworks</a>. And you don't have to be the one who lights the fireworks. Simply enjoy watching while your city or township does it safely.</li></ul>
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By Jeff Berardelli
For the past year, some of the most up-to-date computer models from the world's top climate modeling groups have been "running hot" – projecting that global warming may be even more extreme than earlier thought. Data from some of the model runs has been confounding scientists because it challenges decades of consistent projections.
International Effort to Evaluate Climate Models<p>For the past 25 years the international community has been evaluating and comparing the world's most sophisticated climate models produced by various teams at universities, research centers, and government agencies. The effort is organized by the World Climate Research Programme under the United Nations World Meteorological Organization.</p><p>Climate models are complicated computer programs composed of millions of lines of code that calculate the physical properties and interactions between the main climate forces like the atmosphere, oceans, and solar input. But models also go a lot further, incorporating other systems like ice sheets, forests, and the biosphere, to name a few. The models are then used to simulate the real-world climate system and project how certain changes, like added pollution or land-use changes, will alter the climate.</p><p>Every few years there is a new comprehensive international evaluation called the Coupled Model Intercomparison Project (CMIP). In the sixth such effort, known as CMIP6 and now under way, experts are reviewing about 100 models.</p><p>Information gleaned from this effort will act as a scientific foundation for the U.N.'s Intergovernmental Panel on Climate Change (IPCC) next major assessment report, scheduled for release in 2021. The goal of the report – the sixth in 30 years – is to inform the international community about how much the climate has changed, and, importantly, how much change can be expected in coming decades.</p>
A Conundrum Emerges<p>Over the past year, the CMIP6 collection of models being reviewed threw researchers an unexpected curveball: a significant number of the climate model runs showed substantially more global warming than previous model versions had projected. If accurate, the international climate goals would be nearly impossible to achieve, and there would be significantly more extreme impacts worldwide.</p><p>A foundational experiment in every report addresses "sensitivity": If you double levels of carbon dioxide (CO2) that were in the air before the Industrial Revolution, how much warming do the models show? This doubling is not expected for a few more decades, but it is a quick way to communicate the critical role of greenhouse gases in changing the climate.</p><p>The amount of CO2 in the atmosphere has increased by 35% since the 1800s because of the burning of fossil fuels. As a result, global temperatures have already increased by more than 2 degrees Fahrenheit.</p><p>In the first IPCC assessment report, published in 1990, the answer to that question about the impact of doubling carbon dioxide gave a fairly wide range of results – between 2.7-8 degrees F of global warming. Since then, four more assessments issued six to seven years apart reached nearly the exact same conclusion on sensitivity.</p><p>But that sensitivity may, for the first time, change significantly in next year's assessment. Why? Because starting last year, numerous models in the CMIP6 collection displayed even bigger spikes in temperature upon doubling of CO2 concentrations. We're in serious trouble if the climate sensitivity falls in the mid or upper range of the previous assessments. But if the new, higher estimates are correct, the impacts on civilization would be catastrophic.</p>
In the above CarbonBrief interactive visualization, the bars offer a comparison in the range of sensitivity in the CMIP5 models (gray) and CMIP6 models (blue).
New and Encouraging Evidence Is Emerging<p>At first, scientists were uncertain whether the new model runs were on to something, so the international modeling community dug in to produce multiple studies. The results are not yet conclusive, but a gradual collective sigh of relief seems to be materializing.</p><p>"Evidence is emerging from multiple directions that the models which show the greatest warming in the CMIP6 ensemble are likely too warm," explains Dr. Gavin Schmidt, director of NASA's Goddard Institute for Space Studies.</p><p>For example, <a href="https://www.earth-syst-dynam-discuss.net/esd-2020-23/" target="_blank">a study</a> released April 28 evaluated the past performance of the models making up the CMIP6 ensemble. The team assigned weights to each model based upon historical performance of their warming projections, weighing the poorer performing models less. By doing so, both the mean warming and the range of warming scenarios in the CMIP6 ensemble decreased, meaning the warmest models were the ones with weaker historical performance. This result supports a finding that a subset of the models are too warm.</p><p>That conclusion is supported by another new study evaluating one particular model – the Community Earth System Model (CESM2) – that showed greater warming. Using that model, the researchers simulated the climate in the early Eocene era, about 50 million years ago, when rainforests thrived in the Arctic and Antarctic. The CESM2 simulated a historical climate that seems way too warm compared with what is known about that era from geological data, indicating that the model is likely also too warm in its future projections.</p><p>Two other recent studies of the CMIP6 models being evaluated use clever analysis methods to <a href="https://www.google.com/url?q=https://www.earth-syst-dynam-discuss.net/esd-2019-86/&sa=D&ust=1589209938203000&usg=AFQjCNHYwFB-1KqndGfJ4sXdrrm9DpbLaQ" target="_blank">narrow the range</a> of future warming projections and also <a href="https://www.google.com/url?q=https://advances.sciencemag.org/content/6/12/eaaz9549&sa=D&ust=1589209938203000&usg=AFQjCNEhKY1YZ19qgjSZ_hJM14JmzqXOXw" target="_blank">reduce the projected warming</a> of the CMIP6 models by 10 to 15%.</p><p>Through the intensive research spurred by the CMIP6 climate-sensitivity curveball, scientists have been able to turn a confounding challenge into a confidence builder, providing even greater certainty than they had before in both the abilities of the climate science community and in the computer models used. Moreover, the experience has helped unearth uncertainties remaining in the modeling process.</p><p>Experts conclude much of this uncertainty probably lies in the complexity of clouds. "We have been looking as a community at why the models with greater warming are doing what they are doing – and it's tied to cloud feedbacks in the southern mid-latitudes mostly," explains Schmidt.</p><p>In fact, <a href="https://advances.sciencemag.org/content/6/26/eaba1981" target="_blank">a new study</a> addressing the increased sensitivity was published in Science Advances stating, "Cloud feedbacks and cloud-aerosol interactions are the most likely contributors to the high values and increased range of ECS [sensitivity] in CMIP6."</p>
Understanding the Complexity of Clouds<p>It's long been known in climate modeling circles that cloud processes and interactions are a potential weak link for climate modeling. That reality has been brought front and center by the urgent challenges posed during this CMIP6 evaluation period, but the current evaluation of models also provides an opportunity for discovery and improvement.</p><p>Cloud complexity comes from the reality that clouds have a multitude of sizes, altitudes, and textures. Some clouds cool Earth by providing shade, reflecting sunlight back into space. Others act like a blanket, trapping heat and warming the world.</p><p>Given that about <a href="https://www.nasa.gov/vision/earth/lookingatearth/icesat_light.html" target="_blank">70% of the globe</a> is covered by clouds at any given time, it's no surprise that they play an integral role in regulating the climate. The challenge is to figure out which types of clouds will increase, which will decrease, and what the net effect will be on cooling or warming as the climate changes.</p><p><a href="https://www.nature.com/articles/s41561-019-0310-1" target="_blank">One study</a> last year reached an alarming conclusion: Left unchecked, the release of CO2 into the atmosphere may lead to a tipping point where shallow low clouds disappear – leading to runaway, catastrophic warming of nearly 15 degrees F. While scientists see that outcome as only a remote possibility, it drives home the urgent need to better understand clouds.</p><p>"We have a saying at NOAA: It isn't rocket science – it's much, much harder than that," quips Dr. Chris Fairall, ATOMIC's lead investigator. "One of the major problems for modeling is there is not clean separation of scales." The photo below is one that Fairall took from the NOAA P-3 aircraft.</p>
Investigating the Secrets of Clouds<p>To address the urgent question about the dynamics and role of clouds in a warming world, NOAA and European partners launched their ongoing research effort unprecedented in scale. The U.S. contribution, ATOMIC – short for Atlantic Tradewind Ocean-Atmosphere Mesoscale Interaction Campaign – is an international science mission that was featured recently on "<a href="https://www.cbsnews.com/video/study-aims-to-examine-links-between-climate-change-and-clouds/" target="_blank">CBS This Morning: Saturday</a>."</p>
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