HomeMy WebLinkAboutThe Times Advocate, 2004-12-08, Page 1010
Exeter Times -Advocate
Wednesday, December 8, 2004
Examining the past
Grade 4 students at Biddulph Central School were treated to a fossil exhibition
from London's Bob O'Donnell last week. O'Donnell, who has been collecting fos-
sils for over 30 years, talked to the students about how fossils are formed and
showed them fossilized shells, insects, fish and coral. O'Donnell has been visiting
schools, day cares, libraries and conservation authorities for 12 years and said he
tries to explain the fossils in terms the students can understand.Teacher Lana
Gibbs said her class has been studying rocks, mining erosion and fossils in class.
O'Donnell gave each student a fossil to take home.Above from left are Caleb
Trotter (holding a megalodon tooth), O'Donnell and Jessica Wakefield (with a
shark jaw). (photo/Scott Nixon)
Tips to control spread of
forest pests and diseases
AUSABLE BAYFIELD — There have
been many reports in the news lately
about forest pests and diseases.
Emerald Ash Borer has been discov-
ered outside the "Ash Free" zone.
There are also new reports of Asian
Longhorned Beetle in the Vaughan
area of Toronto.
Shipping containers are the common
vectors for exotic pests and diseases
to enter this country. However, many
are introduced on landscape stock
such as the infamous Dutch Elm dis-
ease and the more recent Beech Bark
disease.
Within Canada and Ontario, fire-
wood and landscape stock are the
most common ways for exotic or
native pests to move from area to
area.
There are currently federally issued
quarantine orders on the movement of
firewood, landscape stock, or any
other untreated wood products out of
the Vaughan/Woodbridge area of the
GTA, and similar orders for Essex and
Kent counties. Fines for breaking the
quarantines can be up to $4,000, but
the cost in damage to forests and city
trees can be many times greater.
Sudden Oak Death (Phytophthora
ramorum) is another disease that has
been increasingly on the radar. It can
infect about 50 different species in 15
plant families, including oaks and
such popular landscape selections as
rhododendrons, pieris and witch
hazel.
Recently, a grower in the U.S.
shipped infected landscape stock,
unknowingly spreading the disease to
16 new states.
Kathy Hodgins, land stewardship
specialist at the Ausable Bayfield
Conservation Authority (ABCA), says
the following tips will help to control
the spread of these pests and diseases.
• Purchase your firewood where you
intend to use it — if you cut wood at
home, burn it at home and if you are
camping or at a cottage, buy your
wood there and burn everything you
buy. Do not bring the leftovers home.
• Be responsible with landscaping —
buy rhododendrons and other land-
scape stock from Canadian growers
certified clear of disease by Landscape
Ontario and the Canada Food
Inspection Agency. Deal with a
responsible garden centre with knowl-
edgeable staff, both for purchases of
landscape stock and help diagnosing
and treating problems with your land-
scape trees and shrubs.
If you notice problems in your forest
or if you have any questions, contact
the ABCA at 235-2610 or visit their
Web site at
www.abca.on.ca/forestry.asp for more
information.
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