DNR weekend reading: When it comes to killer whales, Mom knows best

Smoke from the Taylor Bridge Fire drift over Kittitas Wind Farm turbines in mid August. The fields around the turbines were burned in the fire, too. Photo: Bryan Flint/DNR.

Here links to some recently published articles about the environment, climate science and other topics:

University of Exeter: Long Menopause Allows Killer Whales to Care for Adult Sons
Scientists have found the answer to why female killer whales have the longest menopause of any non-human species — to care for their adult sons.

University of Zurich: Ecosystems Cope With Stress More Effectively the Greater the Biodiversity
Ecosystems with a high degree of biodiversity can cope with more stress, such as higher temperatures or increasing salt concentrations, than those with less biodiversity. They can also maintain their services for longer, as botanists and ecologists from the universities of Zurich and Göttingen have discovered.

Nature Climate Change Journal: Consequences of widespread tree mortality triggered by drought and temperature stress
Forest ecosystems cover approximately 30% of Earth’s land surface, yet most research into the consequences of forest loss triggered by drought and climate change has focused on isolated incidents of forest mortality. The broader implications of widespread forest die-offs needs more research.

Science Daily: Warmer Temperatures May Make New USDA Plant Zone Map Obsolete
Gardeners and landscapers may want to rethink their fall tree plantings. Warming temperatures have already made the U.S. Department of Agriculture’s new cold-weather planting guidelines obsolete, says a professor of civil engineering in The City College of New York’s Grove School of Engineering.