BIO 2129 Lecture Notes - Lecture 13: Emerald Ash Borer, Cactoblastis, Opuntia
8 Nov 2016
School
Department
Course
Professor
Document Summary
Can use herbivory to help a situation too. Can be argued that first the hare population increases and the lynx population follows. There is a threshold of nutrients and water in plants to sustain herbivores. Bigger herbivore = more nutrients and stuff needed. Small generally want more plant nutrition but need less moisture. Large generally need high moisture, some can survive with nutrient poor plants but like high nutrient quality too. Species likely to persists if conditions to be within the polygon space. Keep going up left bars = with predators of leaf cutter ants) Predators affect ants which affects the abundance of trees. May cause loss of plant species in ecosystems that were historically grazed. Tend to eat the common places b/c they are easier to find. Insect herbivory alone accounts for about ~15% of all crop losses worldwide. Many insects and beetles that aren"t even named yet.
