110609

Solinst Levelogger Spare Black Top Caps

Solinst Levelogger Spare Black Top Caps

Description

Spare black top caps are compatible with the Levelogger Junior, Gold, Edge, LTC, and Barologgers.

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$17.00
Usually ships in 1-2 weeks

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Image Part # Product Description Price Stock Order
Solinst Levelogger Spare Black Top Caps 110609 Levelogger black top caps, pack of 10
$17.00
Usually ships in 1-2 weeks

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Wetland water level study skips modern sensor tangle for 1930s method

Environmental sensors can measure almost any physical parameter in nature, but sometimes they can overwhelm the science they are supposed to support. Jason Hill, an assistant professor of engineering at the University of Southern Indiana, wants to create a water level model that will help wetland restorers understand and predict water level fluctuations by studying water loss through the ground and evapotranspiration. The problem is his next project site has too many variables to measure. So, he’s taking an old fashioned route based on empiricism and water level measurement. Hill said that conventional techniques for estimating evapotranspiration require site specific micrometeorological data, like solar radiation, wind speed and vapor pressure.

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Lake Michigan Yellow Perch Bounce Back After Commercial Ban

For decades, commercial fishing for yellow perch was allowed in southern Lake Michigan. This persisted until 1996 when it was outlawed, giving perch stocks there some time to recover. Scientists had for some time assumed that this fishing ban would not affect the reproduction cycles of the perch quickly and that they were going to need a long time to revert back to the cycles they relied on before commercial fishing ever started. But new research led by scientists at Purdue University finds that maturation schedules of yellow perch in southern Lake Michigan are much more resilient than had been previously thought possible.

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Colorado River Fish Contain Levels Of Selenium, Mercury

Largely seen as pristine and relatively untouched by human activity thanks to its protected status, the portion of the Colorado River flowing through Grand Canyon National Park is anything but, according to recently published research. This is evidenced by high levels of selenium and mercury found in the fishes there. Scientists from many institutions were involved in the years-long work, full results of which have been published in the journal Environmental Toxicology and Chemistry. It was led by the U.S. Geological Survey, but perhaps the contributors from Idaho State University got the best end of the stick. They were looking into the food webs of the river to evaluate concentrations of selenium and mercury gathering in fish.

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