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CATLIN LAKE

CATLIN LAKE. Data collected 9/10/2006 Presented by Maureen Gregory. Weather during collection. YSI – Averages from data. Temperature - 17.46 degrees C Conductivity – 27.52uS/cm DO% - 72.60% DO Conc. – 6.9mg/L pH – 6.26 ORP – 162.35mV Nitrate – 0.75mg/L Turbidity – 1.27NTU.

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CATLIN LAKE

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  1. CATLIN LAKE Data collected 9/10/2006 Presented by Maureen Gregory

  2. Weather during collection

  3. YSI – Averages from data • Temperature - 17.46 degrees C • Conductivity – 27.52uS/cm • DO% - 72.60% • DO Conc. – 6.9mg/L • pH – 6.26 • ORP – 162.35mV • Nitrate – 0.75mg/L • Turbidity – 1.27NTU

  4. Light data (Partially collected a week later by Jason, thanks Jason) • Secchi depth – vanished at 3.6 reappeared at 3.5 Light meter gave a range of 450 – 0.3 - big drop came after 2m, and then another one after the 4th and 5th meters

  5. Chlorophyll data Epi.71.3 Meta. 25.7 Hypo. 13.8 Silica data Conc. Abs. Epi. 12.84 0.213 Meta. 8.52 0.168 Hypo. 21.2 0.299

  6. Phytoplankton • Only able to find 28 in the samples retrieved • Most common was a Chrysophyte, 9 were found in the epi. • Second most common was a flagellate, 6 were found in the epi.

  7. Zooplankton – Schindler Trap • 73 specimens were found in 9 subsamples of the three layers • Callanoid copepods were the most common in all three layers, 55 found total • 15 Daphnia were found in the hypolimnion, only 2 were found in the epilimnion • Also found a Chonochilus rotifer in the epi.

  8. Zooplankton – Net tows • In 6 subsamples of the two tows, 168 individuals were found • 56 Callanoid copepods in the first tow; along with 5 Daphnia and 2 copepod Nauplius • 93 Callanoid copepods in the second tow; along with 12 Daphnia

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