BIO1130 mer bleue INTRODUCTION PDF

The distribution of different plant species bio1130

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Unformatted text preview: ies. BIO1130 – Introduction to Organismal Biology – Fall 2012 Mer Bleue site Campus MER BLEUE SITE BIO1130 – Introduction to Organismal Biology – Fall 2012 Mer Bleue site BOG Mer Bleue Boardwalk 500 m BIO1130 – Introduction to Organismal Biology – Fall 2012 Mer Bleue site Bog Sand dune Marsh BIO1130 – Introduction to Organismal Biology – Fall 2012 Sand dune formation 9500 years ago • • • Following glacier retreat, Ottawa River was much larger than today Sand dunes formed by south channel of river. Uplift of terrain caused south channel to dry out then forming a small, shallow lake colonized by bulrushes. BIO1130 – Introduction to Organismal Biology – Fall 2012 8000 years ago Bog formation • Bulrush roots and shoreline plants form a support for sphagnum mosses Willow Bulrush BIO1130 – Introduction to Organismal Biology – Fall 2012 Bog formation (continued) • • • A floating carpet of vegetation begins to grow toward the center of the bog. Deoxygenated water (no O2 input) slows down decomposition, resulting in acidic conditions. Organic matter accumulates at bottom BIO1130 – Introduction to Organismal Biology – Fall 2012 Labrador tea Cassandra Sphagnum moss Bog evolution (cont’d) • Water surface • • completely covered with sphagnum resulting in raised surface, colonization by trees Mineral salts derived from precipitation only. Age: about 5000 years BIO1130 – Introduction to Organismal Biology – Fall 2012 Black spruce Larch Sphagnum Peat The task • Predict the impact of a water drainage from Mer Bleue on the abundance of a particular plant species in the zone where its current incidence is highest. BIO1130 – Introduction to Organismal Biology – Fall 2012 What you will do 1. Make observations of plants in 5 different stations in Mer Bleue: Field, marsh, bog, ecotone, forest 2. Combine your observations with other students 3. Produce a graph presenting the distribution of one particular plant 4. Formulate a hypothesis and predict the effect of a change in the water level in Mer Bleue on your plant BIO1130 – Introduction to Organismal Biology – Fall 2012 Mer Bleue site BOG 500 m BIO1130 – Introduction to Organismal Biology – Fall 2012 Sampling stations 1 – Old field 2 – Marsh 3 – Bog 4 – Ecotone 5 – Forest Parking 5 1 2 3 BIO1130 – Introduction to Organismal Biology – Fall 2012 4 Observations • • Observe plant species in an area of 10m2 (2m x 5m) at each station. Record the presence of each plant species listed on the data sheet provided 2m 5m BIO1130 – Introduction to Organismal Biology – Fall 2012 Station 1 – Old field 2 juillet 2003, © Antoine Morin (amorin@uottawa.ca) BIO1130 – Introduction to Organismal Biology – Fall 2012 Station 2 - Marsh 2 juillet 2003, © Antoine Morin (amorin@uottawa.ca) BIO1130 – Introduction to Organismal Biology – Fall 2012 Station 3 – Bog 2 juillet 2003, © Antoine Morin (amorin@uottawa.ca) BIO1130 – Introduction to Org...
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