Instream Flow ResourcesProject

Flow-Ecology Hypotheses Committee

Meeting #8July 11, 2013

Presented in cooperation with

Gulf Coast Prairie Landscape Conservation Cooperative

Meeting Objectives

• Update on prep for testing flow-ecology hypotheses

• Additional river classification attributes

• Flow-Ecology Hypothesis descriptions

• Prep for October workshop

Flow-Ecology Hypotheses TestsUpdate

• Fish-Gage paired data

• Ecological metrics

• Hydrologic metrics

• Reference and Altered periods for analyses

• Statistical analyses

Locations of paired Fish-Gage dataN=52

GCPLCC FEH gages – Daily Flows with Fish Sampling Dates

dam

Meeting Objectives

• Update on prep for testing flow-ecology hypotheses

• Additional river classification attributes

• Flow-Ecology Hypothesis descriptions

• Prep for October workshop

SARP River Classification FrameworkGeomorphic Sub-Classifications

Stream Gradient

Ecoregions• EPA Level III• Freshwater• EDU

Size

Hydrology

1

2

3

4

5

6

Seasonal Classes of Southeastern Rivers

Source: Konrad USGS

Meeting Objectives

• Update on prep for testing flow-ecology hypotheses

• Additional river classification attributes

• Flow-Ecology Hypothesis descriptions

• Prep for October workshop

River Classification for FEH Analyses• Size• Ecoregion• Seasonal flow• Stability

• Other attributes might include• p/a of floodplain• Regulated• ??

Flow-Ecology Hypotheses Descriptions• Objective: Describe the mechanisms that drive the ecological

responses to flow alteration

• Format: 1-2 pages based on the description on the hierarchy of species-guild-assemblage hypotheses with citations

• Schedule: draft to Shannon and Mary by end of August

Prep for October Workshop

• Preliminary results presented on August 22 webinar

• First draft of report due late September (?)

• Comments/discussion at workshop about • Report• Use of regional FEH• Other?