Toolik

Description: 

Toolik Lake Main Station

Lake Details

Manipulation

Toolik Lake has undergone no manipulation. It has been monitored since 1975 and serves as a reference lake for several whole lake ecosystem manipulations.

Lake Description

Toolik Lake is a deep kettle lake located on the North Slope of Alaska (68.3oN, 149.36oE). It is oligotrophic (annual production of 12g C/m2), stratifies with surface temperatures up to 18oC, and is ice-free from July through September. The surface temperature may reach 18oC, but the volume weighted summer temperature is 10-14oC (Miller et al. 1986). Toolik Lake is dimictic despite its northern location. Ice cover, which may reach 1.4m thick, forms in early October. Toolik Lake typically stratifies in late June or early July when the thermocline is located at 5-7m and mixes in late August.

Elevation (m): 719

Surface Area (ha): 150

Volume (cubic meters): 10,566,000

Mean Depth (m):

Max Depth (m):

Catchment Area (ha): 6688

Water Retention Time (years): 1.0

Fish

Arctic Grayling (Thymallus arcticus)

Slimy sculpin (Cottus cognatus)

Lake Trout (Salvelinus namaycush)

Round White fish (Prosopium cylindraceum)

Burbot (Lota lota)

Microplankton

Keratella cochlearis

Keratella quadrata

Kellicottia longispina

Polyarthra vulgaris

Chromogaster ecaudis

Conochilus unicornis

Filinia longiseta

Zooplankton

Daphnia middendorffiana

Heterocope septentrionalis

Holopedium gibberum

Daphnia longiremis

Bosmina longirostris

Diaptomus pribilofensis

Cyclops scutifer

Elevation: 

719m
Datasets at this location
Title Owner/Creator
Time-series of 5 minute water temperatures averages from Toolik Lake, Toolik Field Station, Alaska, Summer 2002. Sally MacIntyre
Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2002, Arctic LTER, Toolik Research Station, Alaska. George Kling
Zooplankton density for all samples collected from Toolik Lake and lakes near the Toolik Field Station, Arctic LTER 2003 - 2011. Christopher Luecke
Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2003, Arctic LTER, Toolik Research Station, Alaska. George Kling
Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2004, Arctic LTER, Toolik Research Station, Alaska. George Kling
Dissolved organic carbon (DOC) measurements from Toolik Lake Inlet and Toolik Lake main, Toolik Field Sation, North Slope Alaska for 2005-2008. George Kling
Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2005, Arctic LTER, Toolik Research Station, Alaska. George Kling
Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2006, Arctic LTER, Toolik Research Station, Alaska. George Kling
Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2007, Arctic LTER, Toolik Research Station, Alaska. George Kling
Bacterial Production Data for lakes and lake inlets/outlets samples collected summer 2008, Arctic LTER, Toolik Research Station, Alaska. George Kling

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