Flashcards in Aquatic Ecology final Deck (324)
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301
Disinfection by-products and birth weight
∆Birth weight (g) vs Concentration (µg/L)
THM, chloroform - decrease function
302
THM
trihalomethane (chloroform)
303
∂13C as a tracer for water condition
less negative ∂13C (lighter?) -- disturbed watershed
more negative -- pristine water source
304
Caffeine
fecal bacteria enriched with caffeine, linear increasing (ng/L)
Mussel Tissue- high caffeine rates for high ∂15N
305
Ibuprofen (ng/L) vs. Caffeine (ng/L)
lakes all in the low left corner, ocean outfall very high in both
306
molecular fingerprinting
take DNA profile of E. coli and compare to animals- tell which animal produced the e.coli
gut bacteria specific to animal
can tell where specific contaminant came from
307
Shawnigan Lake facts
extensive development since 1900, more since 1970
forest harvesting
septic inputs
changes in fisheries from alien species
308
Sooke Lake facts
protected since 1900
raised three time (1910, 1970, 2002)
Introduction of Leech river water through Deception in 1988
309
chloramination
treatment of drinking water with a chloramine disinfectant. Both chlorine and small amounts of ammonia are added to the water one at a time which react together to form chloramine
310
main nutrient linked to algal blooms and toxins
phosphorous
311
Lake sediments
preserve past records
-can be used to see watershed changes and water quality
-sinking of plankton biomass
312
molecular fingerprinting
take DNA profile of E. coli and compare to animals- tell which animal produced the e.coli
gut bacteria specific to animal
can tell where specific contaminant came from
313
Shawnigan Lake facts
extensive development since 1900, more since 1970
forest harvesting
septic inputs
changes in fisheries from alien species
314
HPLC
High Performance Liquid Chromatography
315
chloramination
treatment of drinking water with a chloramine disinfectant. Both chlorine and small amounts of ammonia are added to the water one at a time which react together to form chloramine
316
main nutrient linked to algal blooms and toxins
phosphorous
317
Lake sediments
preserve past records
-can be used to see watershed changes and water quality
-sinking of plankton biomass
318
sediment core procedure
select study area and sampling site-- take sediment cores-- section sediment core-- data analysis-- analyze data
319
sediment core data analysis
Pigment detection and quantification using HPLC
320
HPLC
High Performance Liquid Chromatography
321
Total algal biomass (mg/g organic matter) vs. year, Sooke and Shawnigan lake sediment cores
Sooke lake relatively straight
Shawnigan 3-10X higher biomass than Sooke, large spikes
322
carotenoid pigment vs. year, Sooke and Shawnigan lake sediment cores
Shawnigan higher than sooke
Sooke watershed protection sustained excellent water quality over 100yrs
323
Zeaxanthin pigment (bluegreen algae mg/g) vs. year, Sooke and Shawnigan lake sediment cores
Sooke pretty close to 0 over most of range, almost entirely less than 0.01
Shawn.- all over 0.01, up to 0.04
324
