BIOL 335 Tropical Field Biology DC 10
(Spring 2010)
Instructors: Donna Stockrahm (stockram@mnstate.edu)
& Brian Wisenden (wisenden@mnstate.edu)
Lectures on Tuesdays and
Thursdays 4-5 PM, in HA 417
Course description:
Tropical Field Biology covers a general overview of tropical
ecosystems, culminating in a 10-day trip to
Text:
Patrick L. Osborne (2000). Tropical Ecosystems and Ecological
Concepts (TEEC)
Required reading: William Allen (2001) Green Phoenix,
Oxford Univ Press
Recommended reading: Adrian Forsyth & Ken Miyata (1984)
Tropical Nature
1.
To
become familiar with ecological processes as they apply to
tropical ecosystems
2.
To
become familiar with biodiversity of the tropics
3.
To
experience the biodiversity of the tropics
4.
To
gain an appreciate for the field of conservation biology
5.
To
appreciate the complexity of the balance between human activity
and habitat conservation
6.
To
appreciate the values and traditions of another culture
Dragon core objectives:
This course is DC OC 10: People and the Environment
This course reinforces three dragon core competencies from DC
middle cluster:
DC4: Natural Sciences; DC5: Social Sciences; DC7: Human
Diversity
Course requirements:
1.
The
lecture exam is based on lecture material given during lecture.
2.
Class
debates on tropical issues will be assigned early in the
semester and conducted during class time.
3.
An
essay, described below, on a topic relating to tropical biology.
4.
Field
journal: a daily log of activities and experience while in
Evaluation standards/Course grading policy:
Points
Percentage
Lecture exam
150
37.5
Debate
20
5
Essay
100
25
Book report
50
12.5
Field journal
50
12.5
Citizenship
30
7.5
400
100
Grade: A =90-100%, B = 80-90%, C = 70-80%, D = 60-70% F = <60%
Course outline:
|
Date (TBA)
(Instructor) |
Lecture Topic |
DC compentency |
TEEC |
|
(DBS+BW) |
Introduction, discuss course
syllabus & trip logistics |
|
|
|
(DBS) |
Video on |
|
|
|
(BW) |
Definition of tropical habitats,
seasonal cycles |
Tropicalprocesses |
1 |
|
(BW) |
Biodiversity: Why so high?
Evolutionary patterns |
Tropical processes |
12 |
|
(BW) |
Ecological interactions, the
ecology of fruit, chemical
defenses |
Tropical processes |
4, 8 |
|
(BW) |
Conservation: balancing ecology
with human land use practices |
Sustainability, social
trade-offs,
environ-socio-culture
interactions,
|
|
|
(DBS) |
Corridors, gene flow and
metapopulations |
Sustainability |
8 |
|
(BW) |
Reforestation, restoration of
tropical habitats |
Sustainability |
|
|
(BW) |
Rain forests: canopy structure,
light, water, nutrient cycling |
Tropical processes |
8 |
|
(DBS) |
Primer on tide pool life |
Tropical processes |
10 |
|
(DBS) |
Mangrove habitat |
Tropical processes |
10 |
|
(BW) |
Temperature, mountain zonation |
Tropical processes |
9 |
|
(BW) |
Dry forests & Cloud forests |
Tropical processes |
8, 9 |
|
(BW) |
Coral reef ecology |
Tropical processes |
11 |
|
(BW) |
Tropical freshwater habitats |
Tropical processes |
6 |
|
(DBS) |
Geological history of CA
isthmus, CR culture & customs |
Socio-cultural influences |
|
|
(BW) |
Monteverde, Cabo Blanco |
Sustainability,
environ-socio-culture
interactions, socio-cultural
influences |
|
|
|
Lecture exam |
|
|
|
Mar 12 |
Leave for |
|
|
|
Mar 21 |
Return from |
|
|
|
|
No class |
|
|
|
|
No class |
|
|
|
|
Debates |
Sustainability, pathways and
trade-offs,
environ-socio-cultural
challenges |
|
|
|
Debates |
|
|
|
|
No class |
|
|
|
|
Hand in essays, field journals |
|
|
Others? - If you have a
passion for something that is not on this list, check with an instructor to make
sure it is one that we will likely encounter on the trip.
Debates
Debates will be by groups of six
people: three people adopting the PRO side, and three adopting the CON side.
There will be 20 min per debate: 4 min per side for opening statements, 4 min
per side for counter-arguments to each other's opening statement, and 2 min per
side for closing remarks. The PRO side starts first. There will be no
declaration of a "winner". The grade for the debate will be assigned by the
course instructors (50%) and the class (50%).
With 18 students in the
class, 3 can debate three of these topics. (The debate topics cannot be repeated
by successive groups).
1.
What is the role and
right of developed nations in conserving the tropics?
PRO: We should conserve
all tropical regions.
The health and
preservation of tropical forests are essential for the ecological health of the
planet and all human kind. Forests produce oxygen for the planet, help mitigate
global warming by consuming carbon dioxide, and provide habitat for millions of
species of plants and animals. Wealthy developed nations have a vested interest
in ensuring the health of its own citizenry. Wanton deforestation is a serious
problem in tropical regions because much of the nutrient content of tropical
forests is tied up in living biomass. When that is removed, the thin layer of
soil that remains behind is exposed to erosion and quickly lost. Once a region
is deforested, it takes hundreds of years to be restored. Industrialized nations
have a responsibility and obligation to use their economic and political
influence to ensure conservation of tropical forests.
CON: We should let local
people live their lives.
Tropical countries
are rich in resources but have poorly developed economies. People in these
regions are impoverished, and they rely on forest resources for firewood,
lumber, and wildlife for income and sustenance. The land occupied by forest is
land that could be developed for planting crops or grazing livestock. Mining
mineral deposits requires removal of the forest cover. Conserving tropical
forests requires economic sacrifices from cultures that often cannot afford it.
Industrialized nations have obtained wealth from harvesting their natural
resources. Why cannot tropical nations benefit from the same practices? How
would we feel if another nation tried to dictate to us what we could and could
not do?
2.
Biodiversity: How
much is enough? How much is a species worth?
PRO:
Our planet depends on a healthy, diverse ecology.
Ecosystem
health is measured, in part, by the diversity of life forms it sustains. The
more stable an environment is, the more that life forms can specialize for ever
narrower niches within the ecosystem. Tropical ecosystems provide a huge variety
of habitats that remain stable except for annual cycles in precipitation. Over
time, tropical habitats have given rise to tremendous species diversity. In
recent times, human land use practices have led to the loss of tropical habitat
and thereby decrease in species diversity. The rate of species loss in the past
100 years rivals the "big five" mass extinctions recorded in the fossil record
over all of evolutionary time. The "human meteorite" is well on its way to
decimating life on earth. Biodiversity is therefore an indicator of ecosystem
health. Because humans are the cause of the current mass extinction, we are also
uniquely positioned to prevent it from continuing. We cannot tolerate any
further degradation of the planet's ecology, especially with human population
levels projected to reach 12 billion by 2040.
CON: The risk of a "mass
extinction" is exaggerated and based on erroneous assumptions of human impact on
habitats.
The planet is not in
grave danger. Although some species are endangered, or have even gone extinct,
these are species specialized for very narrow habitats. Extinction is a natural
and normal part of evolution and all species go extinct eventually. Our planet
is basically healthy. Human welfare is the most important consideration in
deciding these matters, and if a few fragile species suffer as a result of human
activity, that can’t be helped. It makes no sense to spend large amounts of
limited money on a few charismatic species. Instead, we should spend money in
ways that maximize the amount and diversity of habitats conserved.
3.
Ecotourism: loving
the tropics to death?
PRO: Ecotourism is a
tool of conservation.
Ecotourism provides
two valuable functions that directly support conservation of tropical habitats.
First, the value of land as a preserved area is more valuable over the long term
than the value of natural resources contained in the preserved area. Second,
ecotourism is a valuable educational tool by which citizens from industrialized
nations can learn the value of tropical habitats. Educated citizenry create the
political will in industrialized nations to extend economic incentives to
tropical nations to continue and increase conservation efforts.
CON: Ecotourism is a
threat to conservation.
Tropical habitats
support biodiversity best if left alone. Human activity, even something as
simple as a hiking trail, impacts the behavior and ecology of the forest fauna.
The economic benefits of ecotourism promote local businesses to provide comfort
services such as hotels, restaurants, roads, horseback trails, zip lines and the
requisite infrastructure for garbage and sewage disposal services. For example,
Monteverde comprises a tiny area but hosts over 500,000 visitors per year. The
impact of tourist traffic has seriously degraded the ecology of the preserve and
diminished the experience of those that visit the area. We should have more
areas closed off to all human access. Cabo Blanco, at the southern tip of the
4.
Global bioconservation and the tragedy of the
commons: Who can afford the
PRO: We must act now!
The Earth
Summit held in
CON: The economic costs
are too great and borne by too few.
The standard
of living that we all enjoy is based upon an ever expanding economy. We must
produce and consume to keep out economy healthy. To meet the targets set at the
Rio summit would require contracting the
Essay
Your essay can be on any topic
related to Tropical Ecology. You might choose to research the ecology of a
specific organism (leaf cutting ants, quetzals), groups of organisms
(bromeliads, bats, trogons), ecological relationships (ant-acacia mutualism,
vectors for seed dispersal and pollination, epiphytes), human efforts in
conservation of a species (sea turtles) or habitat, or human activities that
have had a negative impact on tropical habitats (bananas, coffee, gold mining).
The essay should be about 10 double-spaced pages and include at least ten
references. You may wish to choose the same topic for "Become an Expert" as for
your essay.
Field journal
All serious scientific inquiry is observed and
recorded. Field workers carry small weather-resistant note books for noting
everything they see and think while in the field. This is not a personal diary
per se (with private thoughts) but rather a permanent record of your field
experiences for you (and perhaps others) to review later that evening or years
later. On every page, include the date (and time of day), page number and
include information of where you were. A field journal contains such things as
data you collect in the field, observations of hermit crabs at the water tap,
which bird species you saw on the morning hike, the number of howler monkeys in
a troop, the weather conditions that day (and hour), notes from conversations
and the name of who you talked to (this has saved me many times!), the dollar-colone
exchange rate, price of coffee at the local pulperia, Spanish vocabulary, the
smell of a leaf when crushed, etc. Even casual observations may (and often do)
later turn out to be quite useful. Rite-in-the-Rain books are about $5 each.
Each student shall bring their field book with them everywhere they go while on
the trip to
Attendance policy:
Students are expected to attend all lectures and the field trip to
Academic honesty:
All
students are expected to engage in professional behavior, including refraining
from unethical and dishonest activity. Definitions and consequences of academic
dishonesty can be found in the MSUM student handbook on the web at:
http://www.mnstate.edu/sthandbook/2003studenthandbook.pdf
Special
accommodations for students with disabilities:
The field component of this course is required for course credit. The field trip
involves extensive hiking over rough mountainous forest trails, canopy
suspension bridges and the study of tidal pools amongst uneven rocky surfaces.
No accommodations are available in these conservation areas in