Development of aquatic ecosystem models
This presentation is the property of its rightful owner.
Sponsored Links
1 / 28

Development of Aquatic Ecosystem Models PowerPoint PPT Presentation


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

Development of Aquatic Ecosystem Models. Lizhu Wang, Shaw Lacy, Paul Seebach, Mike Wiley Institute for Fisheries Research MDNR and U of M. Project Objectives. Develop statewide models for predicting stream flows and summer water temperature;

Download Presentation

Development of Aquatic Ecosystem Models

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


Development of aquatic ecosystem models

Development of Aquatic Ecosystem Models

Lizhu Wang, Shaw Lacy, Paul Seebach,

Mike Wiley

Institute for Fisheries Research

MDNR and U of M


Project objectives

Project Objectives

  • Develop statewide models for predicting stream flows and summer water temperature;

  • Develop models describing relationships among base flow, water temperature, and trout population;

  • Test model sensitivity by incorporating site-specific data from Augusta Creek;

  • Evaluate effectiveness of catchment BMPs in offsetting ground water withdraw.


Development of aquatic ecosystem models

The Key Step: Describe relationships among flow, temperature, and trout

TROUT

FLOW

TEMPERATURE


Build statewide gis databases

Build Statewide GIS Databases

Identify stream measuring unit


Development of aquatic ecosystem models

Michigan

1:100,000 NHD

38,000 inter-confluence stream reaches


Build statewide gis databases1

Build Statewide GIS Databases

Delineate catchment boundaries for each unit


Reaches watersheds riparian zones and upstream catchments

Reaches, Watersheds, Riparian Zones, and Upstream Catchments


Upstream catchment context

Upstream Catchment Context


Build statewide gis databases2

Build Statewide GIS Databases

Synthesize landscape & instream characteristics for each stream unit


Development of aquatic ecosystem models

Reach of Interest

Reach of Interest

Reach of Interest

Reach of Interest


Synthesize landscape data

Synthesize Landscape Data

  • Land use/land cover

  • Surficial geology – texture & formation

  • Soil permeability

  • Bedrock depth & geology

  • Average annual growing degree days

  • Average annual precipitation

  • Air temperature

  • Ground water delivery potential – Darcy

  • Land use transformation model output


Synthesize network instream data

Synthesize Network & Instream Data

  • Arc gradient

  • Catchment gradient

  • Arc sinuosity

  • Arc stream order, linkage number

  • Arc fragmentation by dams and linkages with lakes and large rivers


Variables and scales

Variables and Scales

  • The database contain about 300 variables.

  • The data are organized into 5 scales

  • Channel

  • Riparian (arc)

  • Riparian (entire)

  • Watershed (arc)

  • Watershed (entire)

From Paul Steen, 2004


Build sampled databases

Build Sampled Databases

Link sampled flow, temperature, and trout data with each stream unit


Development of aquatic ecosystem models

Develop Summer Water Temperature Model

  • Collected continuous summer water temperature from about 500 sites throughout Michigan.

  • Developed geo-statistical and generalized additive regression models for July mean ---- Temperature kriging + residual modeling (Mallow’s Cp, Min AIC).

  • Model explains 77% variance.


Development of aquatic ecosystem models

Michigan Stream Temp. Predictions

26.0º C

9.0º C


Development of aquatic ecosystem models

Flow Models

Based on 83 sites that have >20 years flow data

  • Multiple regression models for predicting annual and August 5%, 10%, 25%, 50%, 75%, 90%, 95% exceeding flows;

  • Models explain 78 – 97% variance.


Development of aquatic ecosystem models

Annual Flow Predictions

90% Flow Yield


Development of aquatic ecosystem models

Stream Sites Sampled for Fish Community

Based on fish data from about 1500 sites


Development of aquatic ecosystem models

Link flow, Temperature, and Trout

(hypothetical model)

Cold

Typical

Marginal

July mean water temperature oC


Development of aquatic ecosystem models

Cold

Typical

Marginal


Development of aquatic ecosystem models

Link flow, Temperature, and Trout

(hypothetical model)

Cold

Typical

Marginal

July mean water temperature oC


Development of aquatic ecosystem models

Cold

Typical

Marginal


Development of aquatic ecosystem models

  • Augusta Creek Watershed

  • Max July Temp Difference

  • 1)± 4°C (± 7.2°F)

  • 2)± 7°C (± 12.6°F)

  • 3)± 4°C (± 7.2°F)

  • 4)± 11.5°C (± 20.7°F)

  • 5)± 5°C (± 9°F)

  • 6)± 10.5°C (± 18.9°F)

  • 7)± 6.5°C (± 11.7°F)

  • 8)± 8°C (± 14.4°F)

  • ± 7.5°C (± 13.5°F)

5. 4.

7.

3. 9.

6. 8.

2.

1. (trib)

Gull Lake

N


Summary

Summary

  • Identified stream measuring unit;

  • Delineated catchment boundaries of each unit;

  • Synthesized landscape & instream characteristics of each unit;

  • Linked sampled data for trout, flow, and tempertaure with each stream unit.

  • Developed models for prediction of flow and temperature.

  • Partially built models linking trout, flow, and temperatur.

  • Collected temperature and fish data from Augusta Creek.


  • Login