BSC 2011 Lecture Notes - Lecture 33: Ecosystem Engineer, Trophic Cascade, Invasive Species

• School: University of Florida
• Department: Biology - Biological Sciences
• Course: BSC 2011
• Professor: Keith Choe

Document Summary

Bsc2011 - integrated principles of biology 2 - lecture 33: species interactions part 2. Consumer-resource interactions can be incorporated in population growth models. One example is the lotka-volterra predator-prey population growth model. The effect of the consumer is subtracted in the equation for the resource species. The effect of the resource is added in the equation for the consumer, since the consumer benefits. A certain species of eel is attacked by parasites. The eel has parasites removed and the prawn gets food. Improved acquisition of water, nutrients, and places to live. Leaf-cutter ants and the fungi they cultivate: leaf cutters gather fungi and cultivate it in nests. The fungi is moved around and put in an environment favorable for growth. These are fungi in association with plant roots. Plants provide fungi with carbon from photosynthesis. Fungi increase root length and surface area. Increases nitrogen and phosphorus (nutrients) uptake by plant.