Climate Change

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What will the world look like in 2075 when temperatures could be 3-5° Celsius (4.5 to 9° Fahrenheit) higher than the pre-industrial average? And what should conservationists be doing now to better prepare nature for the changes to come? Mongabay interviewed eight conservationists to better understand how we can aid the natural world to build greater climate resilience.

Whitworth further describes conservation today as a three-legged stool. One leg is protected areas like national parks, the second is species-focused programs, but the third — and the least focused-on — is building climate resilience.

So, how do we do it? How do we build climate resilience into natural systems that are already under attack by deforestation, habitat destruction, over-exploitation and invasive species among other impacts?

Jean Labuschagne, director of conservation development at the NGO African Parks, spells it out with three components: “Large, connected, well-managed ecological systems.”

“Large intact ecosystems are naturally more resilient,” agrees James Deutsch, CEO of Rainforest Trust. “I think focusing on the most intact remaining large ecosystems, and especially large tropical forests, becomes really important … the very size provides adaptive ability.”

“Large intact ecosystems are naturally more resilient,” agrees James Deutsch, CEO of Rainforest Trust. “I think focusing on the most intact remaining large ecosystems, and especially large tropical forests, becomes really important … the very size provides adaptive ability.”

As an example of an optimal protected area for a hotter world, Andrew Whitworth points to Manu National Park in the Peruvian Amazon. Manu covers a vast area of 17,162 square kilometers (6,626 square miles), an area larger than the U.S. state of Connecticut. But just as important to Whitworth: Manu has an advantage many parks lack — it has both highlands and lowlands. Manu protects land all the way from just 150 meters (492 feet) above sea level to 4,200 m (13,779 ft.).

“It’s these elevational changes where you get this incredible biodiversity,” says Whitworth, who discovered a frog species new to science in Manu’s foothills.

A park with this much altitudinal difference will allow species to migrate upslope as Amazonian lowlands heat up and dry out, Whitworth explains. As climate change pummels our planet, species in temperate areas will move poleward — that is, northward in the northern hemisphere and southward in the southern. But in the tropics, they will move upslope — as far as possible.

While protecting lands that allow for temperate species to move will be vital, Whitworth says the most “bang for your buck” will be in preserving “tropical elevation gradients.” In lay terms, Whitworth is saying we need to connect lowland rainforests to highland rainforests and cloud forests, as high as possible, to provide refuges for tropical species to escape to, just like Manu does.

Currently, most corridors are built with specific species in mind — usually, large mammals, particularly predators. But Deutsch wonders whether it might be better to focus on building corridors for plants. Meanwhile, Christopher Jordan, Latin America director at Re:wild, says he’d like to see more corridors designed for seed-dispersers, such as herbivores or birds.

“Nature is the best technology we have. It’s running for millions of years,” says Schepers, adding that “restoring nature at scale … will also help us to mitigate a lot of the [climate] impacts.”

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cross-posted from: https://hexbear.net/post/4579237

In an emergency directive issued late last week, U.S. Department of Agriculture Secretary Brooke Rollins announced her department’s plan to expand logging and timber production by 25 percent and, in the process, dismantle the half-century-old environmental review system that has blocked the federal government from finalizing major decisions concerning national forest lands without public insight.

Under Rollins’ direction and following an earlier executive order signed by President Donald Trump, the U.S. Forest Service would carry out the plan that designates 67 million acres of national forest lands as high or very high wildfire risk, classifies another 79 million acres as being in a state of declining forest health, and labels 34 million acres as at risk of wildfire, insects, and disease. All told, the declaration encompasses some 59 percent of Forest Service lands.

“Healthy forests require work, and right now we’re facing a national forest emergency. We have an abundance of timber at high risk of wildfires in our national forests,” said Rollins in a press release. “I am proud to follow the bold leadership of President Trump by empowering forest managers to reduce constraints and minimize the risks of fire, insects, and disease so that we can strengthen the American timber industry and further enrich our forests with the resources they need to thrive.”

While it may seem intuitive that cutting down high-risk trees will lead to less organic material that could incinerate, environmentalists say the administration’s plans to increase timber outputs, simplify permitting, and do away with certain environmental review processes are likely to only escalate wildfire risk and contribute more to climate change.

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cross-posted from: https://lemmy.world/post/15364086

As I write this, I’m getting ready to leave for my seventh season of tree planting. I’ve had an eye on the weather all winter, watching as the snowpack levels in British Columbia reach lows not recorded since at least 1970, watching as rivers — like the confluence of the Nechako and Fraser rivers in Prince George — run dry.

According to data from Agriculture and Agri-Food Canada’s National Agroclimate Information Service, by the end of March this year 85 per cent of B.C. was considered abnormally dry or in moderate to exceptional drought. The region that I’ll be planting in, near Burns Lake, is one of the driest in the province.

Over the years I’ve had many doubts about the ecological benefits of the province’s reforestation practices.

But last season marked the first time I started to wonder if tree planting might someday become ecologically unviable in some regions of the province.

The lack of precipitation coupled with unseasonably high temperatures made the soil on some blocks so dry and compacted it was like planting into a sheet of rock. I was often struck with the sense that the earth was actively rejecting the trees I was planting. I imagined the trees I’d planted withering and dying, eventually becoming fuel for the wildfires that were then burning all around us.

Was it possible that these intensifying climatic events could render some ecosystems unable to support the growth of new trees? Was I on the frontlines of witnessing the beginning of the end of reforestation as we’ve known it for the last 50 years?

I decided to ask around. I spoke to Sally Enns, who works as a forestry manager contracted by the Cheslatta Carrier Nation and is an incoming supervisor at the reforestation company I work for; we were based out of the same bush camp for part of last season. Reflecting on the drought conditions, she articulated many of the same concerns that I’d had.

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cross-posted from: https://slrpnk.net/post/20737356

A team of international researchers published a new U.N. report Wednesday that adds to the rising scientific call for transformative societal and economic changes to staunch critical environmental threats like global warming, plastic pollution and biodiversity loss.

“The science is clear on what needs to change,” said lead author Caitlyn Eberle. “Stop using fossil fuels, respect and protect nature, use resources sustainably. So if we know what we need to do to change things, why aren’t we doing it?”

The research in the report shows that many of today’s sustainability projects are superficial because they focus on small changes within the system without changing the system itself, she said. A good example is recycling, which is valuable, but doesn’t get to the core issue of why so much waste is produced in the first place, she added. “We cannot expect real change unless we examine the reasons behind our actions and question why we’re doing what we’re doing.”

The process may lead to some “uncomfortable” territory, said UNU-EHS deputy director Zita Sebesvari, another lead author of the report. Crises in Earth’s ecosystems, including the climate and human systems, require rethinking many basic assumptions and values, for example about consumption and waste. “If we bring this to our own life,” she said, “the question is, why do we think that convenience is more important than other values like nature and a pollution-free environment?”

https://archive.ph/QmXcB

Amid all the bad climate news flowing out of the Trump administration, you might have missed a quiet new consensus congealing in think tanks and big business. The targets set out by the Paris climate agreement, they argue—to limit global temperature rise to two degrees Celsius (3.6 degrees Fahrenheit)—are a lost cause. It’s time to prepare for a world warmed by at least three degrees Celsius.

Owing to “recent setbacks to global decarbonization efforts,” Morgan Stanley analysts wrote in a research report last month, they “now expect a 3°C world.” The “baseline” scenario that JP Morgan Chase uses to assess its own transition risk—essentially, the economic impact that decarbonization could have on its high-carbon investments—similarly “assumes that no additional emissions reduction policies are implemented by governments” and that the world could reach “3°C or more of warming” by 2100. The Climate Realism Initiative launched on Monday by the Council on Foreign Relations similarly presumes that the world is likely on track to warm on average by three degrees or more this century. The essay announcing the initiative calls the prospect of reaching net-zero global emissions by 2050 “utterly implausible.”

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Related: Global Warming Has Accelerated: Are the United Nations and the Public Well-Informed?

(Previous climate models have underestimated the cooling effect of aerosol pollution and the climate's sensitivity to rising carbon dioxide levels.)

“The temperatures, seasons, and patterns of rainfall and drought have all shifted noticeably. In the past 10 to 20 years, we have seen prolonged droughts and intense, shorter rainfalls that are insufficient for crop yield and production.”

In response to this new situation, the Ugandan government and civil society organizations have promoted planting trees as a solution. They are encouraging people in Kasese district to plant native species, which are more resistant to pests and diseases and offer ecological and socio-economic benefits.

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West Virginia regulators require methane remediation from a coal company following a blast that severely burned a woman in her home.

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In the summer of 2023, a dozen people willingly walked into a steel chamber at the University of Ottawa designed to test the limits of human survival. Outfitted with heart rate monitors and temperature probes, they waited in temperatures of 42 degrees Celsius, or 107 degrees Fahrenheit, while the humidity steadily climbed, coating their bodies in sweat and condensation. After several hours, their internal body temperatures began ratcheting upward, as the heat cooked them from the outside in.

“Few people on the planet have actually experienced temperatures like this,” said Robert Meade, a postdoctoral researcher in epidemiology at the Harvard School of Public Health who led the study. “Imagine moisture condensing on the skin like a glass of water on a hot day. That’s how hot it was, compared to skin temperature.”

Their experiment tested the body’s ability to cope with extreme heat by exposing participants to temperatures at which they could no longer cool themselves. Their study confirmed that this dangerous threshold is much lower than scientists had previously thought: a so-called wet-bulb temperature, which accounts for heat and humidity, of 26 to 31 degrees C.

https://archive.ph/Lj16Y

Like many African nations, Nigeria has lagged behind Global North countries in shifting away from planet-warming fossil fuels and toward renewable energy. Solar power contributes just around 3 percent of the total electricity generated in Africa — though it is the world’s sunniest continent — compared to nearly 12 percent in Germany and 6 percent in the United States.

At the same time, in many African countries, solar power now stands to offer much more than environmental benefits. About 600 million Africans lack reliable access to electricity; in Nigeria specifically, almost half of the 230 million people have no access to electricity grids. Today, solar has become cheap and versatile enough to help bring affordable, reliable power to millions — creating a win-win for lives and livelihoods as well as the climate.

That’s why Nigeria is placing its bets on solar mini-grids — small installations that produce up to 10 megawatts of electricity, enough to power over 1,700 American homes — that can be set up anywhere. Crucially, the country has pioneered mini-grid development through smart policies to attract investment, setting an example for other African nations.

Nearly 120 mini-grids are now installed, powering roughly 50,000 households and reaching about 250,000 people. “Nigeria is actually like a poster child for mini-grid development across Africa,” says energy expert Rolake Akinkugbe-Filani, managing director of EnergyInc Advisors, an energy infrastructure consulting firm.

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cross-posted from: https://feddit.ch/post/2303021

According to a study by the federal technology institute ETH Zurich, the reforestation and restoration of existing forest areas around the world would make it possible to sequester an additional 226 gigatonnes of carbon. This corresponds to more than six times the global CO2 emissions in 2022.

An international team of researchers, under the direction of the federal technology institute ETH Zurich, obtained this result by analysing satellite data and associating it with ground measurements. The study was published on Wednesday in the specialised journal Nature.

On a global scale, trees could absorb 328 gigatonnes of CO2 more than they currently do, without any human influence. By way of comparison, 36.8 gigatonnes of CO2 will have been emitted in the world by 2022, according to the International Energy Agency (AIE). ...

cross-posted from: https://slrpnk.net/post/1026128

New research shows how reforestation and afforestation projects can be more effective in cutting carbon, restoring ecosystems, creating jobs, and providing other environmental and social benefits.

cross-posted from: https://slrpnk.net/post/11661095

Published in Nature, the study underscores the importance of global forests in absorbing carbon dioxide and calls for immediate action to protect these ecosystems.

Key findings of the study

Researchers examined long-term ground measurements combined with remote sensing data and found significant regional variations in the capacity of forests to act as carbon sinks:

Boreal Forests:

• Significant decline in carbon sink capacity by 36 percent.

• Factors: increased disturbances from wildfires, insect outbreaks, and soil warming.

Tropical Forests:

• 31 percent decrease in carbon absorption capacity due to deforestation.

• Regrowth in previously abandoned agricultural lands and logged areas partially offsets these losses.

Temperate Forests:

• 30 percent increase in carbon sink capacity.

• Reasons: extensive reforestation efforts, particularly in China.

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