relative abundance


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relative abundance

A term defined in the context of mass spectrometry as the measured intensity of an ion beam at the designated m/z value.

Relative abundance refers to the practice of assigning to the most abundant ion in a measured and plotted mass spectrum a relative abundance of 100% and normalising all other ion abundances to that value. To be precise, ion beams are measured in intensity, and ions in abundance.
References in periodicals archive ?
Relative abundance (mean [+ or -] SE individuals per point) of each species, and all individuals of all species combined, of breeding season birds detected during 10-minute point counts at study sites in the Sandstone Prairies Biologically Unique Land-scape (BUL) and the Southeast Prairies BUL during 2010 and 2011 (all data from both years combined).
Figure 8a-8j presents the results for the relative abundance of metal species within the five fractions investigated at the ten sites.
Banks in Qatar could be forgiven for looking back upon the past five years as a period of relative abundance, added the recently published research by VTA, a boutique advisory firm focused on the banking sector.
The relative abundance of these lamps and the large variety of designs make them a popular category of antique for collectors.
Kennedy Endowed Chair of Waterfowl and Wetlands Conversation investigated the relationship between changes in relative abundance of ducks and changes in weather in the Mississippi Flyway.
Initially configured to detect chlorophyll a, the Enviro-T can be integrated with data collection systems to provide real-time data for determining relative abundance of algae and assessing algal productivity.
While technologies such as wind, solar and geothermal are developing rapidly, lignocellulosic biomass is currently the largest renewable energy source (RES) and remains attractive due to its relative abundance and reliable supply.
The entry for each species includes a range map, species name, measurements, field marks, relative abundance, migratory status, altitudinal range, foraging height, habitat, vocalizations, behavior, and regional and national endemics.
This study therefore compared the relative abundance distributions of arthropod families and functional feeding groups.
The daily quoted Parameswaran Iyer, Project Leader and Senior Water & Sanitation Specialist as saying, "Lebanon is one of the luckiest countries in the Middle East since it enjoys a relative abundance of water resources.
The percentage of the quadrat occupied by the weeds was determined as the relative abundance of the species within the plot [16, 13, 14].
My objective was to use these survey data to assess the relative abundance of migratory and winter resident raptors, as well as to examine potential habitat associations, perching preferences and morning versus afternoon activity patterns in each species.