Biodiversity (Science) Flashcards
the existence of marine invertebrates;
the development of marine life.
Paleozoic era (prehistoric life)
the existence of warm-blooded animals and humans
Cenozoic era (recent life)
the existence of largest creatures.
Mesozoic era (middle life)
extinction happens when a massive asteroid or meteor hits the surface of the earth.
Meteoric impact/Cosmic radiation
D = ∑n(n-1) / n(n-1)
Simpson’s Index
It can change the abundance of diversity or the food web in an ecosystem by destroying and replacing its natural value and number
The spread of Invasive species
is a result of air pollution.
Acid precipitation-
the term used to describe the number and variety of life found on Earth. Biodiversity has three types: genetic, species, and ecosystem.
Biodiversity
Pertains/related to the variety and abundance of species within a region.
Species diversity
is a timetable of the earth’s history
Geologic timescale
Pertains/related to the variation of genes within species.
Genetic diversity
It is the size of a biological species that can be sustained in a specific environment, given all the available
resources.
carrying capacity
infectious diseases or virulent infectious diseases cause the change in biological populations.
Diseases/Epidemic
is a scale of the diversity of plant and animal species in a
given area. It is a widely used tool for estimating the complexity, stability, and thus
general health of an ecosystem
Biodiversity Index
is the variation among groups of organisms in different
physical settings.
Ecosystem diversity
When the number of species decreases in size, and only a few remain, that species is considered as
Endangered
It is expressed with the equation of:
Total # of different Species/Total # of Living Items
Biodiversity Index
Increasing the number of population
size that an area can support is called
carrying capacity
are usually described as lack of particular resources like the availability of food, water, and space. Some of the other reasons are predation, diseases, and migration
Limiting factors
Man-Made Causes of Species Extinction
Deforestation, Pollution and Destruction of Coastal Resources
