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Lecture 17

BIOL 1070 Lecture Notes - Lecture 17: Competitive Exclusion Principle, Cerceris, Emerald Ash Borer


Department
Biology
Course Code
BIOL 1070
Professor
Shoshanah Jacobs
Lecture
17

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Inquiry Case #2: Forest Biodiversity - UNIT 6
Explore the different biodiversity perspectives of the characters in this case study of
woodlot biodiversity
Expand your understanding of abiotic variables and discuss the importance of one
variable such as “light” within a forest ecosystem.
Understand key ecological concepts such as niche, habitat, functional traits and
ecosystem engineering.
Understand how species distributions are limited or expanded by abiotic factors and
dispersal ability.
Recognize patterns of distribution of organisms within a particular species.
A reminder about development on the University of Guelph Campus
Campus Master Plan. This plan, “describes the history of the Campus and provides
guidelines for future development. The guiding/planning principles are environmental
quality; spatial structure and composition; project design; movement and associated
systems; land use locations; and implementation.”
Currently, these plans call for development up to within 10m of the drip-line at the edge of
the forest. In the concept section, you learned last week about the concern such a
development could have regarding edge effects. As you proceed through this week's Unit
keep such factors in mind.
Of the variety of edge effect categories that you were introduced to last week were "Access"
and "Species Interactions". In the next section, we will learn more about some specific
edge effects that include non-native species of plants and insects. Urban forests may be
more prone to the effect of these exotic species due to edge effects and fragmentation.
Garlic Mustard (Allaria petiolata) - a highly successful non-native understory forest
plant
One common observation that you are likely to make when you explore the campus natural
areas and forests is that many of the species you identify are not native to North America.
Biological invasions are an extremely important cause of extinction and biodiversity loss. In
the case of Garlic Mustard, this is even more concerning since it is shade tolerant and so
can survive the forest understory (Rodgers et al 2008).
Garlic Mustard has been in North America longer than there has been a Canada!
Garlic mustard as a suite of characteristics that make it a successful invader - and now that
it is here - it is altering forest composition and productivity.
find more resources at oneclass.com
find more resources at oneclass.com
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