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Published byElmer Russell Modified over 9 years ago
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Monitoring of Restored Vegetation in the Wolf Lake Wetlands Rachel Shmagranoff
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Wolf Lake Background 804 ha (450 acres) Once part of Lake Michigan, but then 19 th century industrialization and roads disconnected it Maximum depth of 5.5 m (18 feet) Habitat for many species including – Franklin ground squirrel (Spermophilus tridecemlineatus) – Lake sturgeon (Acipenser fulvescens) – Black-crowned night heron (Nycticorax nycticorax)
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Restoration Pool #9 Pool #8 Controls exotic species, creates new environments and diversity Dredging in pool #9 to be caught by filtering wetland strips so it doesn’t contaminate pool #8
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Field Site The area surveyed consisted of: Main shoreline stretching 370 linear meters 13 islands
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Timeline May 15- May 30 Plot set up and analysis of main shoreline June 6- June 15 Island plot set up and surveying June 18- July 6 Shoreline and island clean up June 27 Bird Nest survey July 2 – July 30 Invertebrate sampling July 31- August 10 Water sampling and algae analysis
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Survey Technique for Main shore Plot setup: 1.Marker pole placed every 20 meters Made 36 shoreline plots 2.1x1meter plot set at every pole 3.Point-contact method conducted 4.Species identified and tallied
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Surveying the Islands 1.Shore line 1x1meter plots every 20 meters 2.Water line 1x1meter plots every 20 meters 3.Upland 1x1meter plots every 10 meters
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Shoreline Vegetation Tally SpeciesScirpus pungens 3-square sedge Eleocharis palustris spikerush Rumex verticillatus Swamp dock Average Frequency (Touches/plots) 2,623/107 = 24.51 927/53= 17.49 548/77= 7.12 Picture
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Water Vegetation Tally SpeciesMyriophyllum spicatum (Milfoil) Scirpus validus (Softstem bulrush) Nymphaea odorata (White water lily) Average Frequency (Touches/plots) 1,129/71 15.90 993/59 16.83 795/81 9.81 Picture
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Upland Vegetation Tally SpeciesScirpus pungens (3-squre sedge) Schizachyrium scoparium (Little Bluestem) Solidago speciosa (Goldenrod) Average Frequency (Touches/plots) 512/27 18.96 371/33 11.24 117/16 7.31 Picture
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Invasive Vegetation Problem Phragmites frequency – Total plots/ total touches: 590/92 = 6.41 Purple Loosestrife frequency – 648/103= 6.29 Cattail frequency – 254/25= 10.16
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Area Clean Up wire Metal spikes Plastic mesh garbage Rope cord Restoration remnants
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Bird Nest Survey Birds Nests Found 10 Canadian geese 8 Red winged black birds 4 sandpipers 3 mallards 3 Killdeer 1 Mute Swan Sandpiper nest Red winged black bird nest Mallard nest Red winged black bird nest
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Invertebrates Top species caught – 183 ephemeroptera (mayfly) – 175 amphipoda (shrimp) – 103 gastropoda (snails) – 39 hirudinea (leech) – 10 other species tallying 56
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Water and Algae Sampling Algae 25 buckets of water poured through filter Algae trapped in container at bottom Algae identification and volume to be assessed at a later date Water Dissolved oxygen – Manganous Sulfate and Alkaline Iodide-Azide reagents – Titration using Phenylarsine Oxide Conductivity pH
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Thank you!
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