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RIVEREDGE NATURE CENTER

Re-establishing a Breeding Population of Lake Sturgeon in

the Milwaukee River

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0 30 60 90 12015Kilometers

4Legend

population status") extirpated!( large! remnant#* unknown/mixed

_ reintroduced

Lake Michigan shoreline

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Milwaukee R.

L. Winnebago - Wolf R. System

Lake Michigan

Holey, M. E., E. A. Baker, T. F. Thuemler and R. F. Elliott. 2000. Research and assessment needs to restore lake sturgeon in the Great Lakes: Results of a workshop sponsored by the Great Lakes Fishery Trust.

Peshtigo

Oconto

Fox

Wolf

Menominee

Manistee

Muskegon

Black

St. Clair

Sturgeon

Bad

0.01

Western basinLake Michigan

(Wisconsin)

Eastern basinLake Michigan(Michigan)

Lake Huron

Lake Superior

Neighbor joining tree describing genetic affinities among all sampled lake sturgeon breeding populations in the upper Great Lakes. Populations cluster as a function of lake basin and within Lake Michigan by location within the basin.

McQuown, E., C. C. Krueger, H. L. Kincaid, G. A. E. Gall and B. May. 2003. Genetic comparison of lake sturgeon populations: differentiation based on allelic frequencies at seven microsatellite loci. J. Great Lakes Res. 29(1):3-13.

The Sturgeon Streamside Rearing Facility Arrives

Bamboo Bend

Lake Sturgeon Spawning in the Wolf River – Shiocton, WI

4/14/06

Genetic Sampling

Fertilization

days of operation 181days of operation w ith 1 visit 123days of operation w ith 2 visits 55days of operation w ith 3 visits 3srf visits 242

daily operation worker visits 425volunteer visits 255rnc staff visits 142w dnr staff visits 28

total daily operation worker hrs. 534.3volunteer daily operation hrs. 303.6rnc staff daily operation hrs. 170w dnr staff daily operation hrs. 60.5

mean visit duration (hrs.) 1.26mean # w orkers/srf visit 1.75w ork hrs. / visit 2.21mean volunteer visit duration (hrs.) 1.19mean rnc staff visit duration (hrs.) 1.20mean w dnr staff visit duration (hrs.) 2.16

Daily Operation Basic Statistics

Milwaukee River SRF - 2006

Daily Operation of the Milwaukee River SRF - 2006

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30 Day Period

Wor

ker V

isits

Volunteers

Riveredge Staff

WDNR Staff

Daily Operation of the Milwaukee River SRF - 2006

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1 2 3 4 5 6

30 Day Period

Wor

ker V

isits

WDNR Staff

Riveredge Staff

Volunteers

Daily Operation of the Milwaukee River SRF - 2006

0

10

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70

1 2 3 4 5 6

30 Day Period

Wor

ker H

ours

Volunteers

Riveredge Staff

WDNR Staff

Daily Operation of the Milwaukee River SRF - 2006

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20

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140

1 2 3 4 5 6

30 Day Period

Wor

ker H

ours

WDNR Staff

Riveredge Staff

Volunteers

Average length and weight of Lake Sturgeon at the Milwaukee Streamside Rearing Facility

Day 31 Day 49 Day 66 Day 79 Day 89 Day 103Day 117Day 131Day 156

Leng

th (m

m)

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Days post hatch Days post hatch - Wild Rose Transfers

Day 79 Day 89 Day 103 Day 117 Day 131 Day 156

Wei

ght (

g)

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80

Days post hatchDays post hatch - Wild Rose transfers

Average length and weight of Lake Sturgeon at the Milwaukee Streamside Rearing Facility

Water Temperature - Milwaukee R. and Riveredge Cr.

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/18/

06 0

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Date & Time

Wat

er T

empe

ratu

re (*

C)

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