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UID:20250814T174742EDT-48302goz2f@132.216.98.100
DTSTAMP:20250814T214742Z
DESCRIPTION:PhD Oral Defence of Emily Studd\, Natural Resource Sciences\n\n
 The behavioural decision to be active or inactive represents a trade-off b
 etween the need to acquire energy and the costs associated with that acqui
 rement. In seasonal environments\, the relative costs and gains associated
  with activity can shift dramatically between winter\, when temperatures a
 re cold and resources are scarce\, and summer\, when temperatures are mild
  and resources are abundant. Despite the obvious link between activity and
  seasonality\, studies of activity patterns over multi-seasonal time scale
 s are surprisingly sparse\, meaning we do not know how activity responds t
 o environmental conditions and\, in turn\, how activity responses to envir
 onmental conditions influence population dynamics and species interactions
 . In this thesis\, I use biologging to quantify how free-ranging animals a
 djust activity according to seasonal environmental variation\, and theoret
 ical modelling to explore the ecological implications of these responses\,
  including population dynamics and trophic interactions. I collected conti
 nuous behavioural data through direct observations and biologging technolo
 gies over four years on three interacting species - the North American red
  squirrel\, snowshoe hare\, and Canada lynx - within the highly seasonal n
 orthern boreal forest. After developing novel approaches to recording beha
 viour over long time periods on free-ranging individuals\, I use four year
 s of accelerometry on red squirrels to show that daily activity is the out
 come of an optimization of energetic and reproductive gain. Then by integr
 ating behaviour into consumer-resource models\, I show how summer-to-winte
 r differences in activity levels determine the seasonality of biomass prod
 uction and loss\, and thus population rates of increase\, decrease\, and s
 tability. Through empirically-supported theoretical modelling\, this thesi
 s highlights the ecological importance of animal activity in seasonal envi
 ronments\, including its bottom-up regulation by environmental conditions 
 and its contributions to populations dynamics and species interactions.\n
 \nEveryone in the ºÚÁϲ»´òìÈ community is welcome to attend a PhD Oral Defence
 . Please join us in celebrating the accomplishments of our PhD candidates.
 \n
DTSTART:20200225T180000Z
DTEND:20200225T180000Z
LOCATION:B1-022\, Barton Building\, CA\, QC\, St Anne de Bellevue\, H9X 3V9
 \, 21111 Lakeshore Road
SUMMARY:PhD Oral Defence: Biologging wildlife behaviour and the seasonality
  of boreal food webs
URL:/macdonald/channels/event/phd-oral-defence-biologg
 ing-wildlife-behaviour-and-seasonality-boreal-food-webs-320540
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