Population Dynamics
N is the abbreviation for this in population equations.
What is population size?
8.2 billion.
What is the human population of the Earth?
Self-sufficient farming where you are growing for your own family.
What is subsistence farming/agriculture?
What most agricultural land is dedicated to.
What is pastureland?
This is a decision management system combining cultural, physical, biological and chemical means of control to do the least harm to the environment and people.
What is IPM?
Bonus: What does IPM stand for?
r is the abbreviation for this in population equations.
What is "Rate"? Rate of growth over a period of time.
The letters of BIDE stand for these terms.
What are Births, Deaths, Immigration, Deaths and Emigration?
These are the three main staple crops of the USA.
What are corn, wheat and soybeans?
The amount of GHGs animal agriculture contributes to climate change.
What is ~14%?
This type of pest is targeted by mollusciside pesticides.
What are snails and slugs?
In a logistic growth model, population size is kept in check by this.
What is carrying capacity?
Bonus: What letter is its abbreviation?
The type of species (r- or K- selected) humans are.
What is K-selected?
The intentional cross between breeds or cultivars of a species to get a particular trait.
What is a hybrid?
The words abbreviated by CAFO.
What is a Concentrated Animal Feeding Operation?
The part of a plant that a direct pest affects/attacks.
What is the harvestable part?
Bonus: What about an indirect pest?
The shape of a logistic growth curve.
What is "S" or sigmoidal shaped?
This type of country has a rapidly expanding population.
What is a developing country?
The main two destinations (uses) for corn in the US.
What are livestock feed and ethanol production?
What is the main kind of habitat being destroyed for shrimp farming?
This is when it would be economically beneficial to take action.
What is the economic threshold (or action threshold)?
r-selected species have this shape to their growth curve.
What is "j" shaped?
The total fertility rate that would mean a population is stable.
What is 2.1 children per woman?
This threat to soils is perpetuated by tillage.
What is soil erosion?
This type of feeding livestock could increase soil organic matter if done correctly.
What is rotational or mob grazing?
When a pest species evolves to be able to survive pesticides that used to be able to kill them.
What is resistance?