NY Lake Comparison Kyle McCanney Adam Baumann Phosphorus Many forms of phosphorus Different techniques for each type We are concerned with SRP Soluble Reactive Phosphorus Biologically available phosphorus
Nutrient uptake Why Phosphorus? ATP and ADP Energy currency of the cell Limiting Nutrient Redfield ratio Most limiting nutrient Far less is available than what is needed Indicator of trophic state of lake
SRP Measurement React the lake samples with a combined reagent Form a phospho-antimony-molybdate complex (in acidic medium) Further reduced by ascorbic acid to form a blue colored complex Absorbs light around 880nm Quantification of SRP Make known standard solutions of phosphate Cover range of phosphate concentrations
expected Measure absorbance's at 880nm Treated same as samples will be Plot absorbance vs. concentration To be used to quantify unknown samples MAGIC MAGnesium Induced Coprecipitation Addition of NaOH to samples Precipitates Brucite [Mg(OH)2], pulling soluble P with it
Samples are centrifuged and precipitate is acidified Allows for lower detection limit Freshwater samples? Phosphorus vs. Depth (2004) Phosphorus Concentration (uM) 0 0.5
1 1.5 2 2.5 3 0 5
10 Depth (m) 15 Arbutus Green Oneida 20
25 30 35 Rich Arbutus and Rich Diel Vertical Migration of Zooplankton Proximate cause = light Ultimate cause = avoid predation
We sampled during the day Most zooplankton found below irradiance level corresponds to lower nutrient levels at these depths Green Green lakes phosphorus data looks unique However, most zooplankton found at concentration consistent with Rich and Arbutus Also below level of irradiance
Measurements and Errors Nitrogen levels Compare nutrient information Error Too many people sampling too many different parameters First time technique users
Until the end of time, you'll be mine! We were meant to be. Whoa, my cranberries. Until the end of time, you'll be mine! We were meant to be. Whoa, my cranberries. Until the end of time, you'll be mine!...
is portable; it is likely to appear across subjects at that grade level and beyond, is vital to comprehension of academic text, helps students express their academic understanding, is essential for participation in academic discussions and writing, and is not...
The sample mean, X̅, is a random variable. There are a lot of different values of X̅. Every sample we collect has a different X̅. There is only one population mean, µ. Sampling Distribution of X̅ . Sampling Distributions
FD-MIMO Supports upto16 CSI-RS ports in R13 & upto 32 in R14. The intent of this paper is to set a test strategy platform and emulate test scenarios of eFD-MIMO thereby validating key performance and functional indicators which could be...
these new decision-makers care about outcomes, quality and financial. they want to hear about from suppliers how their products are going to deliver the outcomes they need. strategies suppliers can use to provide value to these new customers should be...
Rosalind Monks: ArtRosalind Monks is the first artist you will be studying in art. Monks is an artist that uses line within her work. She uses lines to create patterns within shapes of insects, birds and other animals.
Statistical tests deal with claims about a population. Tests ask if sample data give good evidence . against . a claim. A test might say, " If we took many random samples and the claim were true, what is the...
Ready to download the document? Go ahead and hit continue!