slide1
Download
Skip this Video
Download Presentation
Elkhorn Slough Water quality Programs Trends and Concerns

Loading in 2 Seconds...

play fullscreen
1 / 25

Elkhorn Slough Water quality Programs Trends and Concerns - PowerPoint PPT Presentation


  • 68 Views
  • Uploaded on

Elkhorn Slough Water quality Programs Trends and Concerns. ESNERR WQ Monitoring Program-Volunteer Sites Sample Monthly 1989 – Present Params by Probe (DO,Temp,Sal,pH,Turb, Chl) & Nutrients (Nitrate, Phosphate Ammoinium).

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

PowerPoint Slideshow about ' Elkhorn Slough Water quality Programs Trends and Concerns' - flynn-christian


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
slide2
ESNERR WQ Monitoring Program-Volunteer SitesSample Monthly 1989 – PresentParams by Probe (DO,Temp,Sal,pH,Turb, Chl) & Nutrients (Nitrate, Phosphate Ammoinium)
slide3
ESNERR WQ Monitoring Program-NERR SitesSample every 15 mins; 1995 (AP & SM) – PresentParams by probe (Depth, DO,Temp,Sal,pH,Turb) & Monthly Nutrients (Nitrate, Phosphate Ammoinium)
slide9
Nitrate concentrations mg NOx/L

Comparison of means of all available data by Reserve and Station, 2006–2011

OWC takes the prize highest average nitrate

NERR range .02 – 2.7 mg/L

slide10
Nitrate concentrations mg NOx/L

Comparison of means of all available data by Reserve and Station, 2006–2011

Salinas River Sites Average 22 mg/L

10X higher than Highest NERR site in Country

slide12
EUTROPHICATION: anoxic sediment

A much narrower layer at the top of the mud is well oxygenated at muted vs. full tidal sites

slide13
EUTROPHICATION: dissolved oxygen

Greater variation with less tidal exchange

b

b

b

b

a

a

nitrate
Nitrate

900

800

700

600

µM

500

400

300

200

100

0

70

72

74

76

78

80

82

84

86

88

90

92

94

96

98

slide15
How different are the NERR sites?

Comparison of means of all available data by Reserve and Station, 2002 – 2006/7

OWC

WEL

DEL

PDB

HUD

CBM

WKB

APA

SFB

TJR

SOS

CBV

JAC

GRB

http://nerrs.noaa.gov

ELK

KAC

NOC

WQB

NIW

ACE

NAR

GND

SAP

GTM

RKB

JOB

0.001

0.01

0.1

1

10

mg NOx L-1

annual hypoxia from two nerr stations
Annual Hypoxia from two NERR stations

Azevedo Pond

South Marsh

AVIRIS photo, John Ryan, MBARI

tidal range vs time hypoxic
Tidal range vs % time hypoxic

Figure 5. Maximum tidal exchange v. % time hypoxic

slide24
How different are the NERR sites?

WEL

WKB

CBM

OWC

DEL

WQB

ACE

MAR

CBV

TJR

ELK

APA

SAP

NIW

SFB

GND

GRB

PDB

NOC

HUD

RKB

GTM

JAC

SOS

JOB

KAC

NAR

0.1

1.0

10

100

mg Chl a L-1

Comparison of means of all available data by Reserve and Station, 2002 – 2006/7

http://nerrs.noaa.gov

ad