Adapta&on and the
Eects of Time
Can Species Adapt?
Can Species Adapt?
In 18 out of 39 tests of larval or adult
feeding on non-host plants and
14 out of 16 tests of larval survival
there was no ev
Why do we like exotic plants?
It may be an artifact of our history
Prior supply and demand theory
Intrinsic part of our fundamental nature?
- familiarity breeds contempt
We often want plants that deter biodiversity
Welcome to Native Plants & Sustainability ENVS 247
Instructor: Dr. Daniel P. Duran
(call me Dan or Dr. Duran or Prof. Duran whichever you prefer)
Office: PISB 315
Email: [email protected] or
I am an evolu
Rain Gardens, and
Stormwater management, rain gardens, and na0ve plants
Stormwater issues and tradi/onal management
Making func/oning ecosystems from reten/on ba
Take Home Exam will become available online today in the
afternoon (by 3PM). Will be due on Sunday evening 11:59PM.
Plagiarism is cheating. Write your own. Do not confer with
classmates. This is an exam.
Essay/short answer based.
Write enough t
Read the posted ar2cle by Gleditsch & Carlo (in the Readings,
addi/onal materials folder in the course website on BB Learn).
Provide a 1-2 page cri2que of the ar2cle.
Do you see any problems with
of Invasions, Changes
What is an ecological niche?
Some deni*ons (from various sources):
1. The ecological role of an organism in a community (Eltonian niche)
Some of the most highly recommended na3ve plants* for the Mid-Atlan3c
Flowers / herbaceous
Bu<ery weed (Asclepias tuberosa) Not the same as bu/ery bush!
Swamp milkweed (Asclepias incarnata)
Smooth blue aster (Symphyotr
At this point, everything natural is an island. All habitats are islands.
Popula7ons of na7ve plants are islands.
Aerial photograph of a sec7on of Philadelphia
In class it was announced that students would need to propose a topic for
their individual class project by Wed April 8.
I'm extending this to Friday April 10.
Many ideas/topics are acceptab
Suburban lawns, weeds,
Noxious Weed Ordinance from Upper Dublin Twp., PA (passed in 1983)
They are probably referring to ticks (not insects) and Lyme Disease, but thats also
not exactly defensib