IBESS Unit 3 Exam Prep

Lincon Index

Lincon Index

counting the number of different species present and the abundance of each species. calculated using the formula: ∑(ni/N) × ln(N/ni), where ni is the number of individuals in a species and N is the total number of individuals in all species.

Transects

A straight line used to sample and study a specific area.

Quadrats

A square or rectangular frame used to sample and study biodiversity in an ecosystem. Used to estimate the abundance and distribution of plants and or animals. They are placed randomly or systematically, and the organisms within the frame are identified and counted to gather data

Tree Beating

Trees are manually struck with an object to dislodge insects or pests, in order to gather data on the abundance of said insects or pests

Point Counts

A method used to estimate the number of organisms in an area. Observers count all individuals seen or heard within a specific time frame. Helps in monitoring bird populations and studying their behavior.

Simpson’s Index

A measure of biodiversity that takes into account both the number of species present and their relative abundance.

Biodiversity

The variety of life on Earth, including all living organisms and their interactions within ecosystems. It encompasses genetic, species, and ecosystem diversity.

HIPPOC

Habitat loss

Invasive species

Pollution

Population of humans

Over consumption

Climate change

What makes species vulnerable to extinction?

HIPPOC. These factors, either individually or in combination, increase the vulnerability of species to extinction.

Three types of biodiversity

Genetic, Species, Ecosystem

How does biodiversity relate to speciation?

Biodiversity is important. More species in an ecosystem means more chances for speciation.

Simpson’s Index

A measure of biodiversity that takes into account both the number of species present and their relative abundance.

Biodiversity

The variety of life on Earth, including all living organisms and their interactions within ecosystems. It encompasses genetic, species, and ecosystem diversity.

Extirpation