Upload
lydia
View
21
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Competition Project. Larry G. Cabral, Nelida Rojas GK-12 Santa Ana High School. Fruit fly Diversity. Competitive Exclusion Principle. Two species competing for the same resource cannot coexist. One of the competitors will cause the extinction of the other. - PowerPoint PPT Presentation
Citation preview
Competition Project
Larry G. Cabral,Nelida RojasGK-12Santa Ana High School
Fruit fly Diversity
Two species competing for the same resource cannot coexist.
One of the competitors will cause the extinction of the other.
Competitive Exclusion Principle
Competition Experiment
Place two fruit flyPlace two fruit fly species in the species in the same environmentsame environment to compete over to compete over food and egg food and egg laying space.laying space.
The Competitors
D. virilisD. melanogaster
Vs
21 day generation cyclePopulation
N = Fast developing
T= Long LivingStandard Competitor
Long Term Competition Project
Four generations.
All five classes are independent trails.
Student participation.
Results. 50:50
N = Nine day melanogaster T = Twenty-eight day melanogaster
Results. 20:80
N = Nine day melanogaster T = Twenty-eight day melanogaster
50:50
Melanogaster vs. Virilis Melanogaster won
N-Flies vs. T-Flies Even
20:80
Melanogaster vs. Virilis Melanogaster won
N-Flies vs. T-Flies N-Flies won
Outcome
How to make a poster.
Title
Hypothesis
Materials
Procedure
Charts
Graphs
Pictures
Summary of ResultsConclusion
References
Introduction
Size 36 x 28Using Power Point.
This paragraph helps the community understand why the project was done.
Your group needs to:Give an overview of the problem.Give background on what is appropriate to their problem
Introduction
If A then B
Hypothesis
A hypothesis is a testable explanation to a problem or question.
Research subjectYou need to use the scientific name
Fruit Fly = Drosophila melanogaster
InstrumentsVials and populations cages
Do not include obvious materials like pencil or paper.
Materials
Narrate the steps, write in 1st person.
Our group chose to study Drosophila during a three month period to study….. During the three months….
How did you collect data.
What are your variables; what was different between the different types of flies.
What is not controlled.
Methods or Procedure
Quantitative DataStatisticsGraphs
Qualitative DataObservations
No interpretation!!!!!!!
Results
Link results to the hypothesis.First sentence should repeat or reiterate the
hypothesis.InterpretExplainTalk about what the results mean to the communityGo beyond
Conclusions or Discussion
Ashes Ashes They All Fall DownAshes Ashes They All Fall DownBy: Nancy Larios, Andrew Salazar, Sandra Manzo, Fernando Rios, Nicole Calderon
Mrs. Rojas Period 7 G5 Santa Ana High School
IntroductionUsually when it comes to a forest fire, the
results are bad and bring consequences to life. The results of fire are ashes. In an environment full of trees burning ashes rise into the air and carbon dioxide rides along with it. This brings
pollution into the air and later the ashes fall down. Fire can be a good environmental factor for the ecosystem because it burns dead derby on the forest floor so other plants can grow and
animals can move through the forest floor. When ashes fall down the mix into the fresh
water and can effect water organisms. If these organisms die, the whole ecosystem in fresh
water will be affected What would happen to the aquatic organism, daphnia if placed into spring
water with ashes, will it live or die?
ResultsIn this experiment our data, charts, and
graphs have proven our hypothesis. In the Petri dish labeled control contained spring water and the Petri dish labeled experiment has ash water. The charts show that
the organisms daphnia survived in spring water in a three day period. The daphnia in the petri dish of ash water died slowly over a three day period. The organisms that lived
were the ones in the control or Petri dish filled with spring water.
ReferencesDr. Debra Mauzy-Mellitz; Mrs.. Rojas
DiscussionIn this
experiment our group tested Daphnia to see how it would react if put into ash water. Throughout the time period we analyzed the organisms in three days. The Daphnia in the control dish were very active, but the Daphnia in the experimental dish were dying. In this experiment our hypothesis was supported by our data. We predicted that the Daphnia in spring water would survive and the Daphnia in ash water would die. The Daphnia in the ash water died because of the lack of oxygen in the water. Daphnia’s gill are on its legs and they move their legs to suck in oxygen. This is why they died in ash water and the Daphnia in spring water survived.
For the world today our results mean that fire is a bad component when it comes to ashes falling in spring or river water. Ashes effect the ecosystem in rivers because they kill Daphnia, witch clear algae so that the rivers can be clean. Without Daphnia other organisms would not survive because they rely on them for energy. Also ash will effect other living organisms that live in rivers such as salmon, witch bears eat.
In the future another experiment that we will do is how ashes effect living organisms that fly and breath it in. We will do this experiment in the future because we would like to know what organisms are effected and what would happen if more ash pollution were to endanger an entire species.
Materials and Methods
MaterialsMicroscope, spring water, ash water, aquatic
organism(daphnia), test tube beaker pipette, cup, Petri dish, coat, and marker
MethodWrite out how you did your experiment1. Set up 2 small Petri dishes. Label each
dish with your name, table number and class period.
2. Label one Petri dish control and another experiment. Add your selected organism to the Petri dish.
3. Add 20ml of spring water to the control and add 20ml of ash water to the experimental dish.
4. Add 4 organisms to the spring water and 4 to the water.
5. Observe the organisms in 30 minuets, 24 hours, and 72 hours and record the observations.
Hypothesis:(A) If you place an aquatic organisms into ash water then the organism will die.(B) If you place an aquatic organism it spring water then it will not die.
This project was supported by the
TOSHIBA FOUNDATIONand
NSF Math Science FOCUS! grant
Daphnia in ash Water Control
Day 3
Daphnia in Spring Water Experiment
Day 1-3