Index of abundance is a measurement used in ecology to estimate the population density of a species in a particular area. It is based on the number of individuals observed or captured per unit of sampling effort, and is used to track changes in population size over time.
To calculate the abundance index of a species, you typically use data from field surveys or monitoring programs to count the number of individuals of that species in a specific area. This count can then be standardized to a common metric, such as individuals per hectare, to provide a measure of abundance that can be compared across different sites or time periods.
Two examples of index minerals are kyanite and staurolite. These minerals are used by geologists to determine the metamorphic grade of a rock based on their presence and abundance.
Organisms that formed index fossils existed during specific time periods in Earth's history. These organisms lived in abundance, had a widespread distribution, and have distinctive features that make them easy to identify in the fossil record. By studying these index fossils, scientists can determine the relative age of the rocks in which they are found.
An index fossil is used as an indicator of which era/epoch was preserved. The major characteristic necessary to be an index fossil include abundance, widely distributed, but lived for a short period of time.
The fractional abundance is calculated by dividing the abundance of the isotope of interest by the abundance of all the isotopes of the element. For chlorine-37, the percent abundance is 0.2434, or 24.34%.
mean's "land of abundance"
I have abundance of pens.
"Abundance" is a noun.
Abundance of food determines macro-invertebrate abundance and diversity. Species can thrive when there is an abundance of their food sources.
Bruce A. Crawford has written: '2004 Washington salmon and steehead abundance index' -- subject(s): Counting, Salmonidae, Steelhead (Fish), Fish stock assessment, Fish populations
The word "abundance" is a noun. An example of a sentence using the word would be: There was an abundance of food being served by waiters.
The natural abundance of Br-81 is approximately 49.31%.