Jessica Hoxha Ch 3 Glossary Terms
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What is biodiversity?
- The number and variety of life forms, including species, found within a specific region as well as all the number and variety of ecosystems within and beyond that region
- The number and variety of life forms found within a specific region
- Example: Rainforest is very bio-diverse
- To guard legally from harm a species that is listed as endangered, threatened, or of special concern
- Keep safe from harm or injury.
- Example: We protected and helped the black-footed ferret and now it is no longer endangered
What is a biodiversity hotspot?
- A place where there is an exceptionally large number of species in a relatively small area
- A place where there is a very large number of species in a small area
- Example: A hotspot in Canada is the Leitrim Wetlands
What is a community?
- All the populations of the different species that interact in a specific area or ecosystem
- Example: Coral reef
What is a dominant species?
- Species that are so abundant that they have the biggest biomass of any community member
- Species that are so large, they have the biggest biomass out of any community member
- Example: Kangaroo
What is a keystone species?
- A species that can greatly affect population numbers and the health of an ecosystem
- Example: Sea otter
What is captive breeding?
- The breeding of rare or endangered wildlife in controlled settings to increase the population size
- Taking a rare or endangered species into a controlled setting and breeding it to the increase the population
- Example: Black-footed ferrets were apart of captive breeding
What is an ecosystem engineer?
- A species that causes such dramatic changes to landscapes that it creates a new ecosystem
- Example: Beavers
What is succession?
- The series of changes in an ecosystem that occurs over time, following a disturbance
- Example: For a beaver pond, the area changes from forest to flooded forest
What is habitat loss?
- The destruction of habitats which usually results from human activities
- Example: Filling in wetlands
What is deforestation?
- The practice of clearing forests for logging or other human uses, and never replanting them
- Clearing forests for logging or human uses without ever replanting them
- Example: Clearing a forest to build a building
What are alien species?
- A species that is accidentally or deliberately introduced into a new location
- Example: An immigrant who is accidentally or purposefully introduced into a new country
What is an invasive species?
- A species that can take over the habitat of native species
- Example: Snake head fish
What is overexploitation?
- The use or extraction of a resource until it is depleted
- The use or removal of a resource until it is reduced
- Example: Overexploitation of sharks
What is extinction?
- The death of all the individuals of a species
- A species that is completely gone
- Example: Dodo birds are extinct
What is a biodiversity crisis?
- The current accelerated rate of extinction
- The current increased rate of extinction
- Example: The jaguar population has been greatly reduced because of over-hunting
What is restoration ecology?
- The renewal of degraded or destroyed ecosystems through active human intervention
- The renewal of broken down or destroyed ecosystems with active human help
- Example: Program that replants trees in areas that were deforested
What is reforestation?
- The regrowth of a forest, either through the planting of seeds or trees in an area where a forest was cut down
- Regrowth of a forest by planting seeds or trees where a forest was cut down
What is biocontrol?
- The use of a species to control the population growth or spread of an undesirable species
- Using a species to control the growth or spread of an unwanted species
- Example: Monitor lizards were brought in to control the rats
What is bioremeditation?
- The use of living organisms to clean up contaminated areas naturally
- Example: Bacteria has been used to break down oil from oil spills
What is bioaugmentation?
- The use of organisms to add essential nutrients to depleted soils
- The use of organisms to add essential nutrients to reduced soils
- Example: Back in the day, farmers grew corn in one area for a year and then replaced it with clovers to help replenish nitrogen levels in the soil
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