ecological role of elodea in lakes and ponds on the copper river delta, alaska · 2016-09-29 ·...

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Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S. Forest Service Cordova Ranger District Cordova, AK Gordie Reeves USDA Forest Service Pacific Northwest Research Station Corvallis, OR Marty Berg Dept. of Biology Loyola University Chicago Chicago, IL Gary Lamberti Dept. of Biology University of Notre Dame South Bend, IN

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Page 1: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Ecological Role of Elodea in Lakes and Ponds

on the Copper River Delta, Alaska

U.S. Forest Service

Cordova Ranger District

Cordova, AK

Gordie Reeves

USDA Forest Service

Pacific Northwest Research Station

Corvallis, OR

Marty Berg

Dept. of Biology

Loyola University Chicago

Chicago, IL

Gary Lamberti

Dept. of Biology

University of Notre Dame

South Bend, IN

Page 2: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Effects of Invasive Plants (Carey et al. Draft)

• Alter physical & chemical environment

• Alter nutrient availabilty

•Alter habitat

• loss of available habitat

• refugia

• predators

• prey

Page 3: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Approaches to Eradication/Control

(Blackburn et al. 2011)

• Early detection

• eradication

•Already established

•prevent spread & introduction of

other invasives

• understand effects

• ecological

• potential response of

native vegetation

• design actions

Page 4: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Lake

Pond/Slough

Page 5: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Lake

Pond/Slough

Page 6: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Page 7: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

From: University of Washington

Page 8: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Page 9: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

From: University of Washington

Page 10: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

From: University of Washington

Page 11: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Proposed Sampling

Fish Species

Coho salmon (adult/juvenile) Sockeye salmon (adult/juvenile) Dolly Varden Cutthroat Whitefish Northern large scale sucker

Monthly Diel (over coarse of day) Collection

Snorkle/Scuba Nets

Gill Fyke

Page 12: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Page 13: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Page 14: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Proposed Sampling (con’t)

Aquatic Macroinvertebrates

Monthly

Examine assemblage

Page 15: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Eradication

-Fast?

-Slow?

Page 16: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

A B

C D

Page 17: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

1. Survey lakes and ponds on Copper River delta for presence of

Elodea

2. Estimate percent coverage of Elodea per unit surface area

3. Measure physical/chemical variables in Elodea and non-Elodea

habitats

4. Measure biological use (fish & invertebrates) of Elodea and non-

Elodea habitats

Basic Study Design

Page 18: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Elodea spp.

Frond

Benthic growth

Nuisance bloom

Page 19: Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska · 2016-09-29 · Ecological Role of Elodea in Lakes and Ponds on the Copper River Delta, Alaska U.S

Elodea spp. purported distribution in Alaska

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