We reviewed these documents: AUC academic
policies, grading policies, syllabus
Extra
credit quiz given
Many
types of forests –
**Tropical
forests occupy 7% of earth’s surface, but include 50% of the world’s biodiversity!**
Biodiversity = Biological richness of an area, usually defined as
the number of species. Example: 3 doves,
5 parrots, 2 woodpeckers = diversity of 3.
Tropical rainforests – 57%
are located in the Neotropics
(Western Hemisphere). (30% rainforests are in Brazil)
(Extra note: At the current
deforestation rate, in 177 years all tropical rainforests will be gone. We will find out what that means for the rest
of the earth as we learn about the functions of rainforests.)
Ecology = The scientific study of the interactions among organisms
and between organisms and their environment.
Living organisms can be
grouped together into communities
– all the organisms in an area.
Example - Aquatic community
= frogs, egret, fish, dragonflies, turtles, aquatics plants such as cattails,
reeds.
What separates this from
other communities? The ecosystem.
A Forest community is
different = woodpeckers, tako (cuckoos), beetles, tree snakes, tarantulas, palm
trees, ferns, etc.
Ecosystem = the system embracing the organisms plus their physical environment.
Environment is composed of both biotic – living, biological things & abiotic factors. – chemical and physical examples = water quality, temp etc.
Scientific method:
1. Make observations The forest has a lot of birds, the forest
will be destroyed for houses
2. Ask questions How will deforestation affect the
birds?
3. Form hypothesis (tentative
answer to the question) Deforestation
will reduce the number of birds.
4. Make predictions based on
the hypothesis 10 %
reduction in trees will reduce bird population by 10%
5. Test the predictions through
observation or experiments Measure
size of forest and number of birds before and after houses are built,
6. Make conclusions based on
the predictions. Yes, deforestation reduced
the number of birds.
How to convey this to scientific community? One way is through publishing scientific articles.
We reviewed parts of scientific articles using mangrove
article.
Homework – Read mangrove paper and
turn in questions at beginning of class next week.