Freshwater Initiative Launches with 4 Openings for new Professorships

Freshwater Initiative Launches with 4 Openings for new Professorships

Fresh water is essential for life. The conservation and management of fresh waters and their biota are critical to the interests of all humans, nations, and governments. 

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Piranha kin wielded dental weaponry even T. rex would have admired

Piranha kin wielded dental weaponry even T. rex would have admired

By Sandra Hines
via UW News and Information
Taking into consideration its size, an ancient relative of piranhas weighing about 20 pounds delivered a bite with a force more fierce than prehistoric whale-eating sharks, the four-ton ocean-dwelling Dunkleosteus terrelli and – even – Tyrannosaurus rex.

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Over several years, melt water flowing off the Greenland ice sheet carved this 60-foot deep canyon (note people standing at the right for scale). Source: Ian Joughin, Univ. of Washington

International study provides more solid measure of shrinking in polar ice sheets

By Hannah Hickey
via News and Information
The planet’s two largest ice sheets have been losing ice faster during the past decade, causing widespread confusion and concern.

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Average yearly pesticide application from 1999-2004 – expressed as kilograms per square kilometer – and a growing number of wastewater treatment plants in the Columbia basin are reasons to learn more about such chemical inputs and food webs. Source: Northwest Power and Conservation Council

Hungry salmon a problem for restoration efforts

By Sandra Hines
via News and Information
Food webs needed by young salmon in the Columbia River basin are likely compromised in places, something that should be considered when prioritizing expensive restoration activities aimed at rebuilding endangered runs.

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Figure 1.  Photographs of control (forested) and gap (open) study sites on 8 May 2011.

Forest Management to Maximize Snow Retention under Climate Change

OVERVIEW
The mountain watersheds of the Pacific Northwest are expected to experience a decrease in snowpack depth and earlier snowmelt in coming decades. 

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The Influence of Lake and Stream Biogeochemistry on Ecosystem Properties

The Influence of Lake and Stream Biogeochemistry on Ecosystem Properties

OVERVIEW
Nutrient biogeochemistry affects a myriad of ecosystem processes from primary producer biomass and community composition, to habitat quality, to upper trophic level production.

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Leh, an Indian town in a high desert valley in the Himalaya mountains, as it appeared just a few days before the flood. Photo: Jennifer Spatz, Global Family Travels

Roots of deadly 2010 India flood identified; findings could improve warnings

By Nancy Gohring
via UW News
On the night of Aug. 5, 2010, as residents slept, water began rushing through Leh, an Indian town in a high desert valley in the Himalayas.

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Figure 1. Amphibians of the Sonoran Desert span an incredible spectrum of behavioral and life history adaptations to life in an arid environment. Many native anurans (frogs, toads, and spadefoots) are common in the arroyos, cienegas, and canyons of the landscape. Our study occurs primarily during the (A) Monsoon season in the Huachuca Mountains and surrounding ranges, and focuses on (B) Mexican Spadefoot (Spea multiplicata), (C) Red-spotted Toad (Anaxyrus punctatus) and (D) Canyon Treefrog  (Hyla arenicolor). Photo credits: Meryl Mims.

Hydroecology of Intermittent and Ephemeral Streams: Will landscape connectivity sustain aquatic organisms in a changing climate?

OVERVIEW
Dryland streams play a vital role in shaping the hydrological, biogeochemical, and ecological structure and function of arid and semi-arid ecosystems in the American Southwest and elsewhere.

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Figure 2. Projected loss of thermal habitat in the John Day River network by 2070–2099 under the A1B greenhouse gas emissions scenario by general circulation model (ECHAM5/MPI-O, CNRM-CM3,
and UKMO-HadCM3) and species. Length of habitat loss (top number set) is reported in kilometers and volume of habitat loss (bottom number set) is in millions of cubic meters. From: Ruesch et al. (2012).

Forecasting the interactive effects of climate change, riparian land use and invasive species on Pacific salmon

OVERVIEW
Climate change, increasing agricultural and urban land-use, and invasive species threaten the functioning of freshwater ecosystems in the Pacific Northwest.

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Figure 1:  Puget Sound basin land cover change 1880 and 2002.  1880 information from University of Washington Library map collection; 2002 is from classified LandSat imagery.

Puget Sound Past, Present, and Future: 150 years of hydrologic change

OVERVIEW
The Puget Sound basin has changed remarkably since Anglo settlement in the mid-1800s. The primary agents of change have been urbanization, primarily in the lowlands, forest harvest (lowlands and uplands), and a warming climate. 

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