Post on 08-Oct-2020
Prairie du Sac Aquatic Resources Enhancement Program
Surveys of Nearshore Fish Populations in Lake Wisconsin
Dave Marshall and Tim Larson
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2015 Lake Wisconsin Nearshore Fish Survey Sites
Towed DC Electroshocker
Small mesh seine
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1 7
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7 14
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9 6
5 1
3 4
2015 Lake Wisconsin Electroshocking Species Numbers
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2015 Lake Wisconsin Seining Fish Species
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Med-High Rock Low Rock Med-HighPlants
Low Plants Med-HighWood
Low Wood
Species
Average Number Species per Habitat
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Rock Plants Wood
Sites
Habitat Scores of 3
Common Name Scientific Name Envir. Tolerance
mudminnow Umbra limi Tolerant
common carp Cyprinus carpio Tolerant
emerald shiner Notropis athrenoides Not assigned
spottail shiner Notropis hudsonius Not assigned
spotfin shiner Cyprinella spiloptera Medium
bluntnose minnow Pimephales notatus Tolerant
fathead minnow Pimephales promelas Tolerant
golden shiner Notemegonus crysoleucas Tolerant
pugnose minnow Opsopoeodus emiliae Special Concern
carpsucker Caproides Medium
yellow bullhead Ameiurus natalis Tolerant
black bullhead Ameiurus melas Tolerant
tadpole madtom Noturus gyrinus Medium
brook silverside Labidesthes sicculus Medium
bluegill Lepomis macrochirus Medium
pumpkinseed Lepomis gibbosus Medium
green sunfish Lepomis cyanellus Tolerant
black crappie Pomoxis nigromaculatus Medium
largemouth bass Micropterus salmoides Medium
smallmouth bass Micropterus dolomieu Intolerant
mud darter Etheostoma asprigene Special Concern
river darter Percina shumardi Not assigned
johnny darter Etheostoma nigrum Medium
logperch Percina caprodes Medium
yellow perch Perca flavescens Medium
yellow bass Morone mississippiensis Not assigned
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% mg/l
Axis Title
L. Wisconsin D.O. and % Saturation
D.O.
%
Mud darter
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4 - mud d.
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7 - mud d.
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12 - mud d.
13 - mud d.
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15 16 -pugnose m. & mud darter
17 18 – mud d.
19 20 – mud d.
2015 Lake Wisconsin Nearshore Fish Survey Sites
Tadpole madtom
Weed shiner
Pirate perch
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Swan Green Ripley Crystal Fish Rock L. Wisconsin
Nearshore Surveys: Fish Species Collected
Preliminary Findings
• 26 native species found
• 2 rare species found
• Severe Cyanobacteria blooms limited survey effectiveness
• The Cyanobacteria blooms also pose an environmental threat including low dissolved oxygen levels and toxicity.
• A mix of boulders and smaller rocks sizes appears to be better habitat than just riprap boulders.
2016 Surveys