Barrie Creeks, Lovers Creek, and Hewitt's Creek Subwatershed Plan

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ANNE ST N BAYFIELD ST N LINE 1 S ORO-MEDONTE Ecological integrity of stream sites based on benthic community conditions assessed using the Hilsenhoff Biotic Index (HBI) FERNDALE DR N SUNNIDALE RD RIDGE RD W Legend Figure 5-6 Barrie Creeks Kempenfelt Bay BIG BAY PT RD Hilsenhoff Biotic Index ") ") Excellent Very Good TIFFIN ST MAPLEVIEW DR ") ") Good Fair BARRIE LOCKHART RD ") ") Fairly Poor Poor SIDERD 25 ESSA ESSA RD VETERANS DR 400 HWY N HURONIA RD Lovers Creek YONGE ST Hewitts Creeks SIDERD 20 10TH LINE 9TH LINE ") Very Poor Road Municipal Boundary Watercourse COUNTY RD 27 10TH LINE INNISFIL BEACH RD 7TH LINE 6TH LINE 0 0.5 1 2 3 4 KilometresK INNISFIL 5TH LINE This product was produced by the Lake Simcoe Region Conservation Authority and some information depicted on this map may have been compiled from various sources. While every effort has been made to accurately depict the information, data / mapping errors may exist. This map has been produced for illustrative purposes only. LSRCA GIS Services DRAFT created July 2011. © LAKE SIMCOE REGION CONSERVATION AUTHORITY, 2011. All Rights Reserved The following datasets roads, municipal boundaries and Oak Ridges Moraine are © Queens Printer for Ontario, 2011. Reproduced with Permission SIDER
The Barrie Creeks, Lovers Creek and Hewitt’s Creek Subwatershed Plan 5.2.1.3 Algae as an indicator of ecological condition An additional study completed only in Lovers Creek was to look at the algae composition. Siliceous microalgae such as diatoms (Bacillariophyta) and scaled-chrysophytes (Chrysophyta) are key biological indicators of ecological status and environmental change in freshwater habitats. In addition to having well quantified responses to many limnological variables, they have a rapid response time to changing conditions (less than 24 hours) and can be used as an inexpensive tool for rapid environmental assessments. The LSRCA Lake Science Research and Monitoring Program has, since May 2008, been developing these algal groups as key indicators in monitoring environmental conditions in Lake Simcoe and its tributaries. The importance of these indicators has been recognized by the development of an Ontario Provincial Algae Bioassessment Protocol, and their inclusion and wide application across the United States and Europe. In general, these indicators can detect statistically significant environmental changes which directly impact the biological communities of the ecosystem of interest. To date, results of the study have successfully reconstructed measured environmental conditions. The most successful environmental variables are: Index of Development (r 2 = 0.45) 3 ; pH (r 2 = 0.53); alkalinity (r 2 = 0.66); nutrients (total phosphorus, r 2 = 0.50; total Kjehldahl nitrogen, r 2 = 0.60); specific conductance (r 2 = 0.79); and metal contamination (e.g. aluminum r 2 = 0.51). Further work includes fine tuning the species – variable calibration set, and using other biological indicators (e.g. thecamoebians [group of unicellular protozoa in the water that are sensitive to environmental changes], which are successful at reconstructing oxygen concentrations and detecting hypoxic / anoxic events which can result in fish kills). Results specific to the samples taken in Lovers Creek are available in Section 5.4.2. Future work will be to narrow down what species give the most accurate results, so that eventually these samples can be used to determine what the changes are in the system. Once finalized, this type of sampling is faster and more economical than the multiple water chemistry samples currently taken today. 5.2.2 Overview of aquatic communities – Lake Nearshore In addition to assessing the tributaries within the subwatersheds, the nearshore lake communities were also analyzed, as the nearshore zones are critical areas that are linked to both the terrestrial riparian area and to the tributaries and the aquatic communities within them. The nearshore zone for Lake Simcoe is from the shoreline to when the depth reaches 15-20m. This is an important fish feeding, migration, and nursery area; and is also an area that has undergone significant environmental change, including the introduction of a number of invasive species (including zebra and quagga mussels, plants, and zooplankton), changes in the aquatic plant communities, and the impacts of shoreline development and hardening. Part of the mandate of the LSRCA Lake Science Research and Monitoring Program is to assess the environmental status of Lake Simcoe and track any ecological changes; the collected data is being used to set public policy, advise lake managers, and verify environmental guidelines. Included in this mandate are three areas of interest: aquatic plants, sediment phosphorus, and invasive species. In May 2008, LSRCA carried out a survey of aquatic plants across Lake Simcoe to set a baseline for future change. While previous studies focused on Cook’s Bay, an area of high plant biomass, this new study identified four other areas of high biomass, one of which is the Barrie 3 r 2 values are a measure of how well the model reconstructs the variable and ranges from 0 (no correlation) to 1 (perfect correlation). Chapter 5: Aquatic Natural Heritage 220
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Barrie Creeks, Lovers Creek, and He
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Acknowledgements The Barrie Creeks,
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• East of the Barrie Creeks subwa
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Fish Habitat -Fish communities in t
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Table of Contents TABLE OF CONTENTS
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3.5.4 Water Temperature - thermal d
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5.3.11 Climate Change 237 5.4 ASSES
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6.5.10 Improving data management 31
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LIST OF FIGURES CHAPTER 1 Figure 1-
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Figure 2-34: Annual precipitation (
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CHAPTER 4 Figure 4-1: Hydrologic cy
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Figure 5-11: Pathways by which impe
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Figure 7-11: Riparian area with app
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Table 3-4: Surface water quality co
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CHAPTER 5 Table 5-1: Fish species c
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The Barrie Creeks, Lovers Creek and
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7.4 Urban interactions - land use,
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Figure 7-9: An urban landscape with
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Barrie Creeks, Lovers Creek, and Hewitt's Creek Subwatershed Plan

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