CU Mountain Research Station Winter Ecology Winter Limnology – 20 Feb 10 Gold Lake Guest Field Instructor: Sarah Spaulding Course Instructor: Timothy Kittel.

CU Mountain Research Station Winter EcologyWinter Limnology – 20 Feb 10

Gold Lake

Guest Field Instructor: Sarah Spaulding Course Instructor: Timothy Kittel

Photos: Sarah Spaulding

Photos: T Kittel

Photos: T Kittel

Seechi disk z = 2.4m 1% = 3.5m (Light Compensation Pt )

2010 Sonde Profiles Ice thickness = 39cm Snowcover = 14cm

2010

2005

Plankton Profiles2010 & 2005

Previous Sonde Profiles – Years with no snow cover2005 (dashed) & 2006 (solid line)

Fragilaria_crotonensis

Asterionella_formosa

Aulacoseira_sp

Stauroneis_newspecies

Sediment-Surface DiatomsSpecies from 2008 also found 2010

Photos: Sarah Spaulding

Lake Biota Notes

*= Species alive/dormant (= with chloroplasts)

Photos: T Kittel

With special thanks to:

• Gold Lake Resort – Duane Blankenship

• Sarah Spaulding, Guest Field Instructor