15 July 2015, The Telegraph, How native Australian birds like the laughing kookaburra are in ‘drastic’ decline: Study based on 427,000 surveys by birdwatchers and researchers in Australia found serious declines in native bird sightings, possibly due to feral predator, habitat loss and climate change. Some of Australia’s best-known native birds – including the magpie and the laughing kookaburra – are in serious decline and at risk of becoming endangered in some parts of the country, according to a study of national sightings. The study, based on 427,000 surveys conducted by thousands of birdwatchers and researchers across Australia over the past 15 years, found sightings of the well-known laughing kookaburra declined by about 30 per cent in the country’s east and by 50 per cent in the south-east. Magpie numbers declined less consistently, but dropped in four of seven regions including a 31 per cent reduction on the heavily-populated east coast. The study, by Birdlife Australia, a conservation organisation, found some parrots, lorikeets and cockatoos also showed strong declines. There were also reduced numbers of sightings of the willie wagtail, the tawny frogmouth and the brown goshawk. Read more here
Category Archives: Ecosystem Stress
14 July Washington Post, Human impact on the oceans is growing — and climate change is the biggest culprit: The world’s oceans have suffered a lot at the hands of humans — ask any marine conservationist. Unsustainable fishing, pollution and the effects of climate change are just a few of the issues that worry scientists and environmentalists. While we have a good idea of which activities are causing harm to the ocean, scientists have been less clear on which ones are the most damaging and which regions of the ocean are getting the worst of it. Now, new research has allowed scientists to map the impacts of 19 different types of human activity that have harmed the ocean over a span of five years. The study was published Tuesday in the journal Nature Communications. The researchers used global-scale data to map the cumulative impacts of human activities between 2008 and 2013, pinpointing which areas are under increasing stress, which areas are experiencing a decrease and which human activities are having the biggest impacts in which areas. They found that nearly two-thirds of the ocean in experiencing an increase in these man-made impacts — and climate change is the worst of all, driving the majority of the changes the researchers observed. Read More here – access research maps here
29 June 2015, Climate News Network, Stress on water resources threatens lives and livelihoods. Satellite data raises red-flag warning about the draining of underground aquifers to meet the demands of expanding populations. The planet’s great subterranean stores of water are running out – and nobody can be sure how much remains to supply billions of people in the future. Satellite instruments used to measure the flow from 37 underground aquifers between 2003 and 2013 have revealed that at least one-third of them were seriously stressed – with little or almost no natural replenishment. The research was conducted by scientists from California and the US space agency NASA, who report in the journal Water Resources Research that they used data from NASA’s Gravity Recovery and Climate Experiment (GRACE) satellites to calculate what is happening to aquifers. Read More here
26 June 2015, CBS, California drought fueling wildfire flames: California firefighters are battling a new wildfire. The Sterling fire broke out Thursday in the San Bernardino Mountains, where firefighters have been battling flames for over a week. It has already burned at least 100 acres. It’s one of the more than 2,500 fires that have broken out in California so far this year, and gusty winds and drought conditions are fueling the flames. New data show the drought is designated as “extreme” or “exceptional” in more than 70 percent of California. That gives firefighters a new obstacle this year: searching for water.
Flying over the parched hills of Southern California, it’s clear how four years of drought has taken its toll, reports CBS News correspondent John Blackstone. “Normally at this time of year, we’d be seeing green and wildflowers as far as we can see. But because of the drought, we’re seeing brown, dry fuel that has no moisture in it at all,” Orange County fire Capt. Dave Lopez said. Lopez pointed to hills where a small fire could quickly grow into an inferno. The landscape is so dry, fires burn hotter and spread faster, making early attack from the air essential. But just as the drought has made the landscape flammable, it’s also dried up many of the water sources firefighters depend on to do their job. Read More here