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How Does Food Complexity Affect the Biodiversity of an Ecosy

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Agus Cardano

on 16 September 2016

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Transcript of How Does Food Complexity Affect the Biodiversity of an Ecosy

As food web complexity increases, there is less stability in the population of the different species, causing as a result, biodiversity fluctuations in a more rapid and frequent way.
Simple Food Chain
-Small change in population early in the 100 day cycle
-Populations flatlined and stayed consistent throughout the rest of the 100 day period
Multiple Food Chains Together
-Less stability as it gets more complex
-Oscillation at the beginning
-Flat line occurs at the end like in Figure 1
How Does Food Complexity Affect the Biodiversity of an Ecosystem?
All Animals Have Equal Number Of Species To Eat
Top Predator Does Not Eat Omnivores
Justification of Evidence
-Many tryouts were done in order to ensure precision of results
-Argument was based on common results seen in the different experiments
-However, as the second limitation of science, humans may not be free of bias about their own results and hypotheses.
Species in Their Own Class Sharing Prey
Omnivores Eating Plants and Animals
-Repetitive change of populations due to competition for food.
-Win the fight = population goes up
-Losing = population goes down.
-Survival of the fittest mentality causes the frequency of the lines to increase radically.
-More consistency among populations, but still changing through time.
-Flat lines occur because omnivores had plants to eat as well, which caused more consistency
among the populations.
-Plants A and B fluctuate more.
-Most of the plants and herbivores go extinct
-Omnivore A's population increases rapidly
-A web like this cannot survive because there are a few species that take the most resources, while others decrease critically in population up to the limit of extinction, causing a big alteration of biodiversity. Ex: nonnative species with no predators introduced into another habitat.
-The increase in food web complexity causes an increase in the frequency of the waves in the graph.
-Conducted for an extra 100 days to see if the pattern continued, and it did.
Ecosystems and Biodiversity Lab
By: Jose Enriquez and Agustin Cardano
Lionfish in South Florida
-Predatory fish native from Indo-Pacific waters
-Feeds on a variety of fishes and rustaceans, competing directly with native predators, such as snapper and grouper
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