BIO205H5 Lecture Notes - Lecture 18: Exponential Growth
Document Summary
Wasps and scale insects (pests), wasp are used to control the population of the scale insects. They consume those scale insects and they consume it so much that the population of the scale insects will crash. Importance of herbivores: biological control: introduce a agent (species) they will consume or predate on a unwanted species, prickly pear and the cactus moth in australia, moth introduced and the prickly pear population reduced. Must ensure the agent you are introducing have a specifies diet, you don"t want a agent start consume other native species and have a effect on the ecosystem. Effect the other species in that ecosystem. Population cycling: we previously learned of delayed density dependence causing population cycling***, populations overshoot carrying capacity, delayed response to changing resource availability, predator-prey dynamics can also cause population cycling. Increase in hair population then lynx population increases and when the hair decreases the lynx decreases.
