Impacts of Multiple Stressors on Water Quality in Saginaw Bay - PowerPoint PPT Presentation

Impacts of Multiple Stressors on
Download
1 / 12

  • 95 Views
  • Uploaded on
  • Presentation posted in: General

Impacts of Multiple Stressors on Water Quality in Saginaw Bay. Juli Dyble , Gary Fahnenstiel , Tom Nalepa , Hank Vanderploeg NOAA Great Lakes Environmental Research Lab Tom Johengen CILER Scott Peacor , Dianna Dziekan , Kim Peters Michigan State University

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Download Presentation

Impacts of Multiple Stressors on Water Quality in Saginaw Bay

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Impacts of multiple stressors on water quality in saginaw bay

Impacts of Multiple Stressors on

Water Quality in Saginaw Bay

JuliDyble, Gary Fahnenstiel, Tom Nalepa, Hank Vanderploeg

NOAA Great Lakes Environmental Research Lab

Tom Johengen

CILER

Scott Peacor, Dianna Dziekan, Kim Peters

Michigan State University

Steve FrancoeurDonna Kashian

Eastern Michigan University Wayne State University

Jim Bredin, Bruce Walker Joe Depinto

Michigan DEQ LimnoTech

Peter Lavrentyev Dave Millie

University of Akron Florida Institute of Oceanography


Samples collected

Samples collected

  • 2008

  • 3 monthly surveys (May, July, Sept)

  • 10 inner bay, 3 outer bay stations

  • 5 Master stations (surface and bottom)

  • 2009

  • 6 monthly surveys (May – Oct)

  • 10 inner bay, 3 outer bay stations, 2 water intakes

  • 5 Master stations (surface and bottom)

  • 2010

  • 6 monthly surveys (May – Oct)

  • 10 inner bay, 1 outer bay stations, 2 water intakes

  • 5 Master stations (surface and bottom)


Impacts of multiple stressors on water quality in saginaw bay

Sampling stations

Blue: Master (5)

Red: Basic (8)

Water

utility intakes


Parameters measured

Parameters measured

  • Physical

  • CTD: temperature, conductivity, PAR, transmittance, DO

  • Secchi depth

  • Chemical

  • total P, SRP, TDP, particulate CN, DOC, NO3, NH4, SiO2, Cl

  • TSS, VSS

  • Phytoplankton

  • chla

  • phytoplankton cell counts

  • phytoplankton groups for algal pigments (HPLC)

  • Microcystis and microcystin (master stations and water intakes)

  • Zooplankton and microzooplankton

  • vertical tows w/ 64 um net (master stations)

  • oblique tows for larger bodied zooplankton (master stations)

  • whole samples in lugols and formalin (to Peter Lavrentyev)


Status of sample processing

Status of sample processing

  • Physical

  • CTD (temp, PAR, DO, Chl and PC fluorescence) – downloaded

  • Secchi depth - logged

  • Chemical

  • total P, SRP, TDP, NO3, NH4, SiO2, Cl – 2008, 2009, 2010

  • particulate CN - 2008, 2009 (2010 in process)

  • DOC – 2008, 2009, 2010

  • TSS, VSS – 2009, 2010

  • Phytoplankton

  • chla - 2008, 2009, 2010

  • phytoplankton cell counts – 2008, 2010 (2009 likely not available)

  • phytoplankton groups for algal pigments (HPLC) – not done

  • Microcystis and microcystin – (2010 in process)

  • Zooplankton and microzooplankton

  • vertical tows w/ 64 um net (master stations) – 2009 (2010 in process)

  • oblique tows for larger bodied zooplankton (master stations)

  • whole samples in lugols and formalin (to Peter Lavrentyev)


Avg surface temp 2008 2010

Avg surface temp (2008-2010)

SB20

SB10

SB5

SB14

SB2


Average yearly tp 2008 2010

Average yearly TP (2008-2010)

SB20

SB10

SB5

SB14

SB2

Driven by 2009

values

Driven by 2010

values


Average yearly chl a 2008 2010

Average yearly chla (2008-2010)

SB20

SB10

SB5

SB14

SB2

3.6 ug/L

Proposed chla resulting from 15 ug P/L in Saginaw Bay, 1979 P mgmt strategies workshop


Chl a vs tp

Chla vs TP

R2 = 0.6645

R2 = 0.4214

R2 = 0.5982


Phyto community analysis 2008 of total biovolume

Phyto community analysis – 2008(% of total biovolume)

SB20

SB10

SB5

SB14

SB5

SB2

SB14

SB2

May 08

July 08

Sept 08


Phyto community analysis 2008 of total biovolume1

Phyto community analysis – 2008(% of total biovolume)

SB20

SB10

SB5

SB20

SB14

SB10

SB2

May 08

July 08

Sept 08


Impacts of multiple stressors on water quality in saginaw bay

Many Thanks to:

Ashley Burtner

Danna Palladino

Duane Gossiaux

Nancy Morehead

Joann Cavaletto

Dave Fanslow

Steve Constant

Lee Wyrobek

Dennis Donahue

Andrew Yagiela

Mike Taetsch

Tom Joyce

Jack Workman


  • Login