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Creators/Authors contains: "Yevak, Samuel"

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  1. ; ; ; ; (, Environmental Data Initiative)
    This is a summary of major ion concentrations for stream water samples collected at the outflow of the Saddle stream, near Saddle grid point 007 on Niwot Ridge. 
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  2. ; ; ; ; (, Environmental Data Initiative)
    This is a summary of major ion concentrations for water samples collected at Green Lake 4. Under summer conditions (June - October) samples were from the outlet stream from the lake; in winter (November - May) they were from the lake, beneath ice cover. 
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  3. ; ; ; (, Environmental Data Initiative)
    Starting in 2012 zooplankton sampling at Green Lake 4 was included in the long term monitoring data set at Niwot Ridge. Immediately after the ice has completely melted from the lakes, zooplankton samples are taken once a week for six consecutive weeks at the deepest portion of the lake from an inflatable raft. Zooplankton were sampled at the deepest location of each lake by pulling a conical net (Wisconsin net) vertically through the water column (i.e., vertical tow sample). For each zooplankton sample obtained, adult organisms were identified to species, or lowest taxonomic level (Chydoridae sp. and Bosminidae sp.). Larvae of cladocerans were counted together as neonates; calanoid and cyclopoid copepodites were counted together as nauplii. Individual body lengths of the first 50 -100 (when possible) individuals of each taxon were recorded using a calibrated eyepiece micrometer and means reported. 
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  4. ; ; ; ; (, Environmental Data Initiative)
    This is a summary of major ion concentrations for stream water samples collected at the outflow of the Saddle stream, near Saddle grid point 007 on Niwot Ridge. 
    more » « less
  5. ; ; ; ; (, Environmental Data Initiative)
    This is a summary of major ion concentrations for stream water samples collected from the stream draining the Arikaree Cirque. Sampling location varied from the channel at the lip of the cirque, where it is first exposed by snowmelt, at the beginning of the season to the outlet from the pond at the foot of the glacier (usually around early July). 
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  6. ; ; ; ; (, Environmental Data Initiative)
    This is a summary of major ion concentrations for stream water samples collected at the Albion site, at the lower end of Green Lakes Valley at the road crossing (culvert) at the Albion camp. 
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  7. ; ; ; ; (, Environmental Data Initiative)
    This is a summary of major ion concentrations for water samples collected at Green Lake 4. Under summer conditions (June - October) samples were from the outlet stream from the lake; in winter (November - May) they were from the lake, beneath ice cover. 
    more » « less
  8. ; ; ; ; (, Environmental Data Initiative)
    This is a summary of major ion concentrations for stream water samples collected at the Green Lake 5 Rock Glacier, near Green Lake 5 in the Boulder County Watershed Green Lakes Valley. 
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  9. ; ; ; ; (, Environmental Data Initiative)
    This is a summary of major ion concentrations for water samples from the outlet stream of the Martinelli Basin. Water usually flows seasonally from May to September. 
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  10. ; ; ; ; (, Environmental Data Initiative)
    This is a summary of major ion concentrations for stream water samples collected at the Saddle Stream site, at the outflow of the Saddle Stream below Niwot Ridge. 
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