Report shows that even many common species are dwindling
FRISCO — Bird populations are dwindling all over North America, especially in the Southwest, where some species have declined by as much as 48 percent since the late 1960s, according to the 2014 State of the Birds report released last week.
In Utah, Arizona and New Mexico, habitat loss and fragmentation due to development are the largest threats. These are also significant threats in the nation’s grasslands, where breeding birds like the eastern meadowlark and the bobolink have declined by 40 percent since 1968, with the steepest declines coming before 1990, when stakeholders started investing in grassland bird conservation.
And experts say it’s not just rare birds that are vanishing. The report includes a list of 33 common species in steep decline, losing ore than half their global populations over the past four decades — a clear warning sign that birds can undergo a massive population collapse with surprising rapidity. For example, passenger pigeon populations crashed from 2 to 3 billion birds to none in the wild in just 40 years. Continue reading “Southwestern bird populations in steep decline”→
‘If we don’t worry about the imminent threats now, it’s probably not worth worrying about the medium-term future’
By Bob Berwyn
FRISCO — The world’s penguins could use a little help, a team of leading conservation biologists said last month, announcing results of a study that systematically assessed global risks to the southern hemisphere sea birds.
While global warming remains a long-term threat, other impacts, primarily related to human activities, are a more clear and present danger, the scientists said, advocating for a more widespread network of marine protected areas to buffer penguins from pollution, tourism and fishing.
“We need to address some of these issues before we think about resilience to climate change,” said Dr. Phil Trathan, head of conservation biology with the British Antarctic Survey. “If we don’t worry about the imminent threats now, it’s probably not worth worrying about the medium-term future,” Trathan said, explaining that penguins living and breeding in southern Africa and South America face the highest risks.
Near critical shortages in California prompt action
By Summit Voice
FRISCO — With Colorado River water supplies disappearing at a dizzying rate, and with a thirsty — and politically mighty — California parched by drought, the biggest water users at the table said this week they’ll invest $11 million to try and conserve significant amounts of water across all sectors, including including agricultural, municipal and industrial uses.
The Central Arizona Project, Denver Water, The Metropolitan Water District of Southern California and Southern Nevada Water Authority all signed on to what is being presented as a landmark water conservation agreement aimed at demonstrating “the viability of cooperative, voluntary compensated measures,” according to a press release from Denver Water. Continue reading “Major Colorado River players announce conservation push”→
FRISCO — Piecemeal planning and conservation efforts won’t be enough to preserve valuable ocean resources for future generations, a leading group of environmental and marine scientists said last week, calling on countries around the world to cooperate on zoning coastal waters in an approach that would mirror common land-use planning efforts.
Effective long-term conservation is crucial because about 20 percent of the world’s population — mostly in developing countries — lives within 60 miles of the coast. Growing populations and worsening climate change impacts ensure that pressures on tropical coastal waters will only grow, they warned. Continue reading “Better planning needed to protect ocean resources”→
Scientists track decline of iconic Galápagos birds
FRISCO — Populations of blue-footed boobies, one of the Galápagos Islands iconic species, have dwindled by a third since the 1960s, mainly because the birds don’t seem to be finding the food they need to breed and raise chicks.
The population decline is so steep that the birds are in danger of dying out, according to a new study published in the journal Avian Conservation and Ecology. The researchers found that sardines have all but disappeared from the birds’ diet, said Wake Forest University biology professor Dave Anderson. Without that primary food source, adult birds are simply choosing not to breed, he said. Continue reading “Where have all the blue-footed boobies gone?”→