R and K- selective species/Ecological sampling
Give 3 strategies used by R-selective species.
- use little energy to care for their young
- reproduce often
- tend to be generalists
Example: Water purification
What is the type of ecosystem service?
- Regulating services
What is ecological succession?
- When an environment is destroyed by a disaster and the organisms are forced to rebuild their environment.
Give an example of a natural disruption that happens periodically.
- Hurricanes
Give 3 strategies used by K-selective species.
- put in lots of energy towards their offspring
- reproduce periodically
- tend to be specialists
Example: Nutrient cycling
What is the type of ecosystem service?
- Supporting services
How are primary and secondary succession different?
- Primary succession is when there is no soil whatsoever and an environment has to start over completely
- Secondary succession is when only plants have to grow back
Give an example of a natural disruption that happens episodically.
- Volcanic eruptions
Give 2 examples of R-selective species.
Give 2 examples of K-selective species.
R- rabbits, microorganisms
K- elephants, humans
Example: Harvesting timber
What is the type of ecosystem service?
- Raw materials
What type of disruption leads to primary succession?
- Paving of roads
Give an example of a natural disruption that happens randomly.
- Earthquakes
What is a sample?
- a proportion, piece, or segment that is representative of a whole
Example: Art inspired by nature
What is the type of ecosystem service?
- Cultural services
What type of disruption leads to secondary succession?
- Fires
What are Type 1 organisms?
What are Type 2 organisms?
What are Type 3 organisms?
Type 1- Humans
Type 2- Birds
Type 3- Trees
Sampling methods measure.....
Describe the difference between species evenness and species richness.
- Species richness is a measure of the number of different types of species in an ecosystem while species evenness is a measure of the relative abundance of each species.
1. Which types of species are the first to colonize an area?
2. Which types of species are the last and longest lasting species to inhabit an area?
1. Pioneer species
2. Mosses, bacteria, lichen
What do survivorship curves show us?
- the number or proportion of individuals surviving to each age for a given species or group