Tag Archives: climate change

Trout don’t make healthy mutts

Westslope cutthroat trout in the North Fork of the Flathead River in northwestern Montana - Jonny Armstrong-USGS
Westslope cutthroat trout in the North Fork of the Flathead River in northwestern Montana – Jonny Armstrong-USGS

Here’s a little bit different take on the cutthroat trout report mentioned here a couple of days ago . . .

Unlike dogs, trout don’t make healthy mutts.

Don’t expect hybrid vigor when rainbow trout interbreed with cutthroats in Montana’s high mountain streams. Despite the rainbow’s success as the most widely distributed game fish in the world, and the cutthroat’s remarkable ability to thrive through wildfires and landslides, their co-mingled offspring tend to be too dumb to live long.

That fact leaps out of analysis on one of the largest genetic data sets anywhere of Rocky Mountain cutthroat trout at the University of Montana’s Conservation Genetics Lab. In a recently published paper, the researchers looked at what happened to native trout after decades of artificial stocking in lakes and rivers.

Read more . . .

Climate change spells trouble For cutthroat trout

Westslope cutthroat trout in the North Fork of the Flathead River in northwestern Montana - Jonny Armstrong-USGS
Westslope cutthroat trout in the North Fork of the Flathead River in northwestern Montana – Jonny Armstrong-USGS

NPR has an article about the problems faced by westslope cutthroat trout in the this corner of the country . . .

There’s an unplanned experiment going on in the northern Rocky Mountains. What’s happening is that spring is arriving earlier, and it’s generally warmer and drier than usual. And that’s messing with some of the fish that live there.

The fish is the iconic cutthroat trout. It’s a native North American fish that thrives in cold, small streams. Explorer Meriwether Lewis of Lewis and Clark Expedition fame was among the first European-Americans to catch this spangly, spotted fish. He used deer spleen as bait.

It’s relative rarity now makes it a favorite for catch-and-release anglers. But biologists have now found that it’s in danger. The much more common rainbow trout is invading cutthroat streams and mating with the native fish. Ecologist Clint Muhlfeld says that creates hybrids.

Read more . . .

Judge prods feds on wolverine protection

Wolverine in snow - Steve Kroschel
Wolverine in snow – Steve Kroschel

Better late than never: The fight over wolverine protection made it into the New York Times . . .

Because it depends on heavy spring snowpack to excavate dens and safely raise its young near the top of mountain peaks high in the northern Rockies, the wolverine is on the front lines of battles over the effects of climate change.

There is less snow in the Rockies these days, and researchers forecast that in the coming decades, the wolverines in Idaho, Montana and Wyoming may disappear with the snowpack. Only about 300 of the animals are in the lower 48 states. In 2014, the United States Fish and Wildlife Service refused to list the animal for endangered species protection, calling the science inconclusive.

The debate over protection for the reclusive animal, the largest in the weasel family, has been going on for about 20 years, and it was revived this week by a federal court ruling here in Montana.

Read more . . .

Judge tells feds to get moving on wolverine protection

Wolverine (Gulo gulo, female, born 1996) at the Helsinki Zoo
Wolverine (Gulo gulo)

The U.S. Fish and Wildlife Service got dragged into court over their wolverine policy and got chewed out by the judge . . .

The Obama administration brushed over the threat that climate change poses to the snow-loving wolverine when it denied protections for the elusive predator also known as the “mountain devil,” a federal judge ruled Monday.

U.S. District Judge Dana Christensen ordered wildlife officials to act as quickly as possible to protect the species as it becomes vulnerable to a warming planet. Wolverines need deep mountain snows to den, and scientists warn that such habitat will shrink as the planet heats up.

The U.S. Fish and Wildlife Service rejected the views of many of its own scientists in 2014 when it said the effects of climate change on wolverines remained ambiguous.

Read more . . .

Climate impacting trout populations worldwide

Native westslope cutthroat trout and bull trout stranded in a pool in Ole Creek. Courtesy Jonny Armstrong  USGS
Native westslope cutthroat trout and bull trout stranded in a pool in Ole Creek. Courtesy Jonny Armstrong USGS

Rising water temperatures and general problems with access to clean, fast running water are affecting trout populations globally . . .

Temperature-sensitive trout thrive in water that is cold, clear and abundant – not exactly groundbreaking news. But a recent study tracking the relationship between warming climes and the adverse effects on global trout populations is the first to establish a scientific connection.

A team of researchers with the U.S. Geological Survey – including two researchers based at Glacier National Park – found that climate directly and consistently influences trout populations worldwide, and published their finding recently in the international quarterly journal “Reviews in Fish Biology and Fisheries.”

In the study, titled “Impacts of Climatic Variation on Trout: A Global Synthesis and Path Forward,” lead author Ryan Kovach and his colleagues provide the first global synthesis of trout responses to climate change over time. Despite the economic, cultural, and ecological value of trout, Kovach said long-term data comparing the health of trout populations to changes in streamflow and water temperature are surprisingly limited.

Read more . . .

North Valley working on climate change solutions

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A report from Debo Powers, NFPA President, on last Monday’s community climate solutions project meeting . . .

On Monday, concerned citizens met at the Whitefish City Hall to explore a possible community climate solutions project. A diverse group of thirty-four stakeholders attended the meeting which included people working on fire and water issues, tourism and recreation, economic development/ Chambers of Commerce, high schools, local food and renewable energy. Four members of the North Fork Preservation Association attended the meeting in a packed conference room.

Steve Thompson spoke about what other Montana communities are doing to understand and adapt to climate change. One of the questions that Steve asked the group was whether this project should be for just Whitefish or for the entire North Valley, including Columbia Falls and the North Fork. The meeting featured two guest speakers from Missoula: Chase Jones from the City of Missoula and Amy Cilimburg from the Missoula Community Foundation who spoke about the new Climate Smart Missoula project. This exemplary project is focused on reducing Missoula’s carbon footprint, promoting energy conservation and renewable energy, and pursuing climate-smart economic opportunities.

Immediately following this meeting, the Whitefish City Council met for a more formal work session. In April 24, 2014, the city council set a goal of developing a climate solutions plan and this was the council’s first detailed conversation about the possibilities.

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Climate impacts to hunting, fishing and wildlife heritage

Over at the Flathead Beacon, Tristan Scott posted an article on a recently released report by the National Wildlife Federation . . .

Montana’s hunters and anglers have as much vested in the Paris climate negotiations as the state’s abundant suite of wildlife, according to research compiled by the National Wildlife Federation, which recently released a report detailing what’s at stake culturally, ecologically and economically if a solution is not forthcoming.

As 150 world leaders at the 2015 United Nations Climate Change Conference hash out a binding agreement for curbing greenhouse gas emissions, scientists studying moose, cutthroat trout, mountain goats, and other wild animals in Montana are sounding the alarm about climate impacts in the Treasure State.

The National Wildlife Federation’s report is entitled “Game Changers: Climate Impacts to America’s Hunting, Fishing and Wildlife Heritage,” and outlines the historic role of hunters and anglers in conservation and the many ways in which the changing climate is affecting hunting and fishing opportunities and the state’s robust outdoor economy.

Read more . . .

Glacier Park presentation: Climate Change An Organizational Perspective

From this morning’s Glacier Park press release . . .

The Crown of the Continent Research Learning Center at Glacier National Park is hosting a brown-bag luncheon presentation by Glacier National Park Superintendent Jeff Mow. The free presentation, “Responding to Climate Change: An Organizational Perspective,” is Wednesday, August 5, from 12 p.m. to 1 p.m. at the park’s community building in West Glacier.

National parks and protected areas throughout the world are being impacted by climate change through extreme weather events, warmer temperatures, rising sea levels, and ocean acidification. Mow said, “Underlying the challenge of how we respond to the new normal are an uncertainty associated with climate change. The organizational challenge for parks like Glacier is how to respond to climate change and build the organizational capacity to adapt to the wide range of conditions that we are experiencing.”

Mow has an extensive history working in northern latitudes and has been involved in climate change response for the National Park Service since 2006. He has been superintendent at Glacier National Park since August, 2013.

The Glacier National Park Crown of the Continent Research Learning Center hosts brown-bag lectures throughout the year. Visit http://www.crownscience.org/getinvolved/outreach/brownbag for more information.

Climate change imperiling Glacier Park stonefly

Climate change is threatening the survival of the west glacier stonefly . . .

Climate change is imperiling a rare aquatic insect found only in Glacier National Park, scientists said in a study that underscores how high-elevation species could be particularly vulnerable to global warming.

Researchers from the U.S. Geological Survey, Bucknell University and the University of Montana reported on the plight of the western glacier stonefly in the journal Freshwater Science.

Read more . . .

NYT: Climate change threatens to strip the identity of Glacier National Park

This morning’s New York Times has a survey article — with a photo spread — discussing the potential impact of climate change on Glacier National Park specifically and the Northern Rockies in general . . .

What will they call this place once the glaciers are gone?

A century ago, this sweep of mountains on the Canadian border boasted some 150 ice sheets, many of them scores of feet thick, plastered across summits and tucked into rocky fissures high above parabolic valleys. Today, perhaps 25 survive.

In 30 years, there may be none.

Read more . . .