DNR weekend reading: Mixed forests grow better, electronic whale tracking and other stories

Mount Adams and Mount St. Helens
Two volcanoes — Mount Adams and Mount St. Helens (right) tower over the Chehalis River Basin in western Washington on a foggy day. Photo: Venice Goetz/DNR.

Here are links to reading selections about climate, wildlife, the environment and other science news published recently by science journals, universities, websites, and other sources:

AlphaGalileo Foundation: Mixed forests – a missed opportunity?
Forestry and nature conservation can benefit from promoting a diversity of tree species, new study finds. A new study from the Swedish University of Agricultural Sciences and Future Forests shows that mixed forests, in comparison with monocultures, have positive effects on the production of timber, food for wildlife carbon storage and other many ‘ecosystem services.’

Science Daily: Whales’ Foraging Strategies Revealed by New Technology
Jeremy A. Goldbogen of the Cascadia Research Collective in Olympia, Washington, and his colleagues are using multisensor tags attached to whales with suction cups to report depth, acceleration, pitch, timing and other information about the animals as they make foraging dives. The information tells scientists more about oceanic food webs and ecology.

youis.com: Under the weather, literally
Storms and persistent rainfall can cause sewage overflows that release water with bacteria and viruses into waterways which, in turn, raises the potential of stomach upsets among those come in contact with the water either directly in indirectly. In the short-term at least, climate change-related increases in precipitation and storms may have a more direct impact on human health than climate change-related increases in average temperature.

Max Planck Institute for Ornithology, Seewiesen: Clamorous city blackbirds
Many urban birds sing at a higher pitch than their country cousins to differentiate their song from the low-frequency sound of road traffic. As it turns out birds can sing louder at higher frequencies to make themselves heard in traffic noise.

University of Pennsylvania: Mountains Are Only Minor Contributors to Sediment Erosion and Climate Regulation
New research published in the journal Geology directly challenges previous studies which suggested that small mountain rivers contributed most of the sediment to the world’s oceans.

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