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The Arctic Circle meeting, Tuesday, January 8, 2008: Factors affecting tree growth in the Yukon « Arctic Circle »
Détails
Auteur: John Bennett
Posté: 2008-01-07 07:49:15
Modified On: 2008-02-13 08:12:19
Événement commence: 2008-01-08
Événement fini: 2008-01-08
Description

THE ARCTIC CIRCLE
455th Meeting

Tuesday, January 8, 2008

Michael Pisaric

TREES CAN TALK - REALLY! AT LEAST THEY USED TO

Northwestern Canada has experienced some of the most pronounced warming in Canada and perhaps the world during the past 50 years. Further warming is projected during the current century. Such warming is likely to have significant impact on the biophysical environment, including altering the frequency of disturbances (i.e. insect outbreaks, wild fires) or changing species composition. While warming should lead to increased tree growth and carbon sequestration, dendrochronology research in the Mackenzie Delta suggests recent warming is not translating into increased growth. Dr. Pisaric will present results of tree ring studies in the Delta and Old Crow regions that suggest factors other than just temperature are responsible for recent growth of trees in these areas.

Michael Pisaric was educated at Brock University (BSc), McMaster University (MSc) and Queen’s University (PhD, 2001). His doctoral research focussed on treeline change in northeastern British Columbia and southeastern Yukon. He has worked in northern and alpine regions of Canada, Russia and western USA. His research focus is treeline change during the Holocene and utilizes several paleoecological techniques, including tree ring analysis and lake sediment analysis. Dr. Pisaric has been carrying out research in the Mackenzie Delta since 2003 and in Old Crow since 2007. He is currently Associate Professor in the Department of Geography and Environmental Studies at Carleton University, which he joined in 2002.

The meeting will be held in the Astra Lounge on the entrance level of the RCAF Officers Mess, 158 Gloucester Street (just east of Bank Street), Ottawa. Parking is available on the street and in nearby parking lots. There is a charge of $3.00 for evening use of the parking lot in the same block as the Mess. The meeting begins at 2000 hrs and the bar will be available from 1930 hrs. As always, guests are welcome.

Dr. Pisaric's talk will follow the brief Annual General Meeting, which will begin at 2000 hrs.


Next meetings:
Feb 12 Joe Sokolsky on defence issues in the North
Mar 11 Pascale Roy-Léveillé on winter snow-pack development and ground freezing in the Yukon

Membership dues for 2008 are now due. You will shortly be receiving a dues notice in the
mail.

HAPPY NEW YEAR!

Thomas Frisch
Secretary
(613 725-2221)
Date de modification: 2007-06-20

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