The Medway Valley Heritage Forest · through City’s “Adopt an ESA” program • Public...
Transcript of The Medway Valley Heritage Forest · through City’s “Adopt an ESA” program • Public...
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The Medway Valley Heritage Forest:
A gem among London’s Environmentally Significant Areas
Greg ThornDepartment of Biology
Western University
26 May 2016
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Greg Thorn26 May 2016
Source: UTRCA
Watershed 205 km2
A tributary of the Thames River, 214 km in length
83% agricultural, 11% forested, 6% urban
Watershed managed by the Upper Thames River Conservation Authority, as are the publicly-owned ESAs of LondonOur focus tonight
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The Medway Valley Heritage Forest Environmentally Significant Area
Medway
Kilally Meadows
SiftonBog
The CovesMeadowlilyWoodsWarbler Woods
KainsWoods
WestminsterPonds
Source: London.ca
One of eight publicly owned ESAs in London: these are the jewels of London’s remaining natural heritage areas
Greg Thorn26 May 2016
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The Medway Valley Heritage Forest Environmentally Significant Area
Source: London.ca
• One of five ESAs established in 1989 Official Plan• From Fanshawe Park Road south to confluence with the
Thames, approximately 95 ha public lands plus Western and Huron College lands
• ESA has since been extended north of Fanshawe to Sunningdale Road, approximately 30 ha.
• Environmentally Significant Areas are not parks, but are simply listed as Open Space in many planning documents and maps.
• Medway and Westminster Ponds ESAs have repeatedly been subject to proposed roads or bridges through them.
Greg Thorn26 May 2016
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Greg Thorn26 May 2016
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Greg Thorn26 May 2016
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Greg Thorn26 May 2016
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1950: London’s population now about 95,000
GainsLosses
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Greg Thorn26 May 2016
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Greg Thorn26 May 2016
Source: UTRCA
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Much more than an outline on a map!
• 562 species of vascular plants• 90 species of birds• 31 species of mammals, including 7 bats• 7 species of reptiles and 5 of amphibians• 48 species of butterflies• 41 species of Odonata (dragonflies &
damselflies)• 27 species of fish, 102 fungi, …
Greg Thorn26 May 2016
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7 out of Ontario’s 8 species of Bats!
• Eptesicus fuscus (Big brown bat)• Lasionycteris noctivagans (Silver-haired bat)• Lasiurus cinereus (Hoary bat) - most common• Lasiurus borealis (Eastern red bat)• Myotis lucifugus (Little brown bat) [ENDANGERED]• Myotis septentrionalis (Northern long-eared bat) -
least common [ENDANGERED]• Perimyotis subflavus (Tri-colored bat) [ENDANGERED]
Greg Thorn26 May 2016
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Photo: Gerrit Vyn, Cornell Lab
Photo: Gregg Droll, Cornell Lab Photo: Raymond Lee, Cornell Lab
Photo: Rob Curtis, Audubon Guide
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Source: Dillon Consulting, Inc., 2015Greg Thorn
26 May 2016
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Source: Dillon Consulting, Inc., 2015
Greg Thorn26 May 2016
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Environmental Quality: Core and Buffer
Protected Area Core
Greg Thorn26 May 2016
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Environmental Quality: Core and Buffer
A small intrusion makes a large reduction in the core area
3 m path
Greg Thorn26 May 2016
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Connectivity vs. FragmentationA nicely connected system of natural areas: animalsand even plants can move along these corridors and so have increased natural habitat in which to survive.
Greg Thorn26 May 2016
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Connectivity vs. FragmentationIt depends on your perspective: a pathway and bridgewill connect a recreational trail system, but willdisconnect (fragment) and degrade a system of protectednatural areas.
Greg Thorn26 May 2016
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Keep Inappropriate Uses OUT of ESAs
• Major Trails and other Recreational Developments: a clear case of N.I.M.B.Y. and N.O.T.E.
• Not In My Back Yard and• Not Over There Either!• Let’s keep the “S” in ESAs
Greg Thorn26 May 2016
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Photo: Nina Zitani
Greg Thorn26 May 2016
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Norway Maple
Medway Creek
Greg Thorn26 May 2016
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Photo: Lgalbi, wikipedia.org
False Rue Anemone Enemion biternatum
Greg Thorn26 May 2016
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Greg Thorn26 May 2016
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What your City is doing for you• Invasive species management: Goutweed,
periwinkle, Phragmites, Knotweed, Scots Pine• MVHF ESA north 2 boardwalks, bridge, trails,
invasive species management and naturalization• New ESA signage and sensitive area trail closures• 2 Turtle habitat nesting areas created in north in
2014 by Dillon with Scott Gillingwater of UTRCA• Natural Heritage Inventory and Evaluation for the
Conservation Master Plan revised by Dillon as per comments from public, Nature London & EEPAC
Greg Thorn26 May 2016
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What you have done, and can do
• 3 Groups have adopted portions of the ESA through City’s “Adopt an ESA” program
• Public Buckthorn Busting• Participate in the Conservation Master Plan• Leash your dogs• Walk, don’t bike• Enjoy, observe, & report interesting sightings
Greg Thorn26 May 2016
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Greg Thorn26 May 2016
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More you can do
• On your property– Plant a native: see biodiversitygardening.com– Remove invasives: see ontarioinvasiveplants.ca– Create habitat – a rock pile snake refuge, piled
wood-chips or cut wood for salamanders, …– Be careful what goes down the storm sewers – they
lead right to our local waterways
• Join Nature London, Reforest London, be active
Greg Thorn26 May 2016
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Thank You!Linda MacDougall, City of London Ecologist
Dr. Nina Zitani, the web: photos
Past and present naturalists of London, for saving the natural heritage that we enjoy today in London
Greg Thorn26 May 2016
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Photo: Nina Zitani