2013 Selected Limnological Features. Upstate Freshwater Institute

Transcription

1 21 Selected Limnological Features 1/1/214 Upstate Freshwater Institute 1

2 Cayuga Lake, LSC monitoring program sites site 8 pelagic zone site 1,, 4,, 7 sites 1/1/214 Upstate Freshwater Institute 2

3 Whole Lake Monitoring Sites, 21 in-lake sites 1 site in inlet near mouth 2 times per month, April- October 1/1/214 Upstate Freshwater Institute

4 More Frequent South Monitoring Sites, 21 weekly June-September 1/1/214 Upstate Freshwater Institute 4

5 Results: Long-term Lake Trophic State Metrics , from LSC monitoring Jun-Sept. avg. Chl (µg L -1 ) TP (µg L -1 ) SD (m) 1 2 pelagic, LSC study 1, LSC study Year 1/1/214 Upstate Freshwater Institute

6 Relationships Between Trophic State Metrics , from LSC monitoring Jun-Sept avg. added 21, pelagic =, = 2 Chl (µg L -1 ) TP (µg L -1 ) SD (m) Year update pelagic, 21, site, (site 2) pelagic, LSC study, site 8, LSC study, (sites 1,,4,,7) 1/1/214 Upstate Freshwater Institute

7 Color Contour for Cayuga Lake: Depth (m) May 21, 21 IL T c Chlf T ( C) c (m -1 ) Chl f (µg/l) /1/214 Upstate Freshwater Institute 7 Distance from IL end (km) upper lake waters turbidity inputs to site 4 area lower Chl f before noteworthy stratification

8 Color Contour for Cayuga Lake: Depth (m) June 18, 21 IL T c T ( C) c (m -1 ) Chl f (µg/l) Chlf Chl f extends deeper than epilimnion 1/1/214 Upstate Freshwater Institute 8 Distance from IL end (km) upper lake waters evolving T stratification, longitudinally variable thickness (seiche activity)

9 Color Contour for Cayuga Lake: Depth (m) June 2, 21 IL T c Chlf T ( C) c (m -1 ) Chl f (µg/l) 1/1/214 Distance from IL end Upstate (km) Freshwater Institute distinct seiche pattern for T, thicker epilimnion at north end resuspension signal at north end, high c variable Chl f longitudinally, likely linked to seiche

10 Color Contour for Cayuga Lake: Depth (m) July 2, 21 IL T c Chlf T ( C) c (m -1 ) Chl f (µg/l) /1/214 Upstate Freshwater Institute 1 Distance from IL end (km) seiche activity, with piling of epilimnion at the south end strong longitudinal structure in Chl f elevated c in south surface waters

11 Profiles for Cayuga Lake: Sep. 17, 21 Depth (m) IL T ( C) T c (m ) Chlf (µg/l) whole water column benthic nephloid layer (BNL) higher c at bottom in deep area Chlf likely due to sediment 2 4 resuspension Upstate Distance from IL end (km) Freshwater Institute c 1 1/1/

12 TP TDP PP Longitudinal Patterns of Phosphorus Species study averages for surface waters highest at southern end mostly associated with PP greatest variability at southern end mid-lake minima IL Station 1/1/214 Upstate Freshwater Institute 12

13 PP POP PIP Longitudinal Patterns of Phosphorus Species study averages for surface waters veracity of this partitioning yet to be established highest at southern end greatest variability at southern end for PP and PIP less spatial differences for POP mid-lake minima IL Station 1/1/214 Upstate Freshwater Institute 1

14 Longitudinal Patterns of Phosphorus Species 1 TDP DOP study averages for surface waters highest at southern end greatest variability at southern end mid-lake minima SRP 12 IL /1/214 Upstate Freshwater Institute 14 Station

15 Longitudinal Patterns of SD SD (m) study averages greatest variability at mid-lake mid-lake maximum + *, + + IL Station * site 1 didn t include dates with SD on bottom in avg. so may be bias false low + + depth at site less then 1m, max depths for these sites are approximately as follows; site 1 = 4m, site 2 7m, site = 4m, and site I L = m 1/1/214 Upstate Freshwater Institute 1

16 Longitudinal Patterns of Chl f 1 Chl (µg/l) 12 IL Station study averages for surface waters greatest variability at southern end north end minima 1/1/214 Upstate Freshwater Institute 1

17 m Lake P data vs. LSC eff 2 TP TDP season average (April Oct.) LSC intake depth at 7 m between sites 2 and PP 1 1 LSCeff 4 1/1/214 Station Upstate Freshwater Institute 17

18 m Lake P data vs. LSC eff TDP DOP SRP season average (April Oct.) LSC intake depth at 7 m between sites 2 and LSCeff 4 Station 1/1/214 Upstate Freshwater Institute 18

19 8m Lake P data vs. LSC eff 2 TP TDP season average (April Oct.) LSC intake depth at 7 m between sites 2 and PP 1 1 LSCeff 1/1/214 Station Upstate Freshwater Institute 1

20 8m Lake P data vs. LSC eff TDP DOP SRP season average (April Oct.) LSC intake depth at 7 m between sites 2 and generally consistent with lake-wide conditions LSCeff 1/1/214 Station Upstate Freshwater Institute 2

21 Frequent South TP Chl (µg/l) SD (m) Sta. 1 Sta. 2 Sta. 21 Sta. 1 Sta. 2 Sta. Sta. 1 Sta. 2 Sta. Jun Jul Aug Sep gradient extending from site 1 to site sustain early July increase at site pelagic gradient extending from site 1 to site 1/1/214 Upstate Freshwater Institute 21

22 Frequent South TP Chl (µg/l) SD (m) Station decreasing gradient extending from site 1 to site no gradient increasing gradient extending from site 1 to site 1/1/214 Upstate Freshwater Institute 22