Results 21 to 30 of about 123,013 (299)

An integrated monitoring system for disaster-causing organisms in the water intake areas of coastal nuclear power plants

open access: yesFrontiers in Marine Science, 2023
Nowadays, nuclear power plays an important role in the energy structure of many countries. However, A bloom of a disaster-causing organism (DCO) in the cold-water intake area of a coastal nuclear power plant can block the water cooling system and ...
Chao Li   +14 more
doaj   +1 more source

Occupancy as a surrogate for abundance estimation [PDF]

open access: yesAnimal Biodiversity and Conservation, 2004
In many monitoring programmes it may be prohibitively expensive to estimate the actual abundance of a bird species in a defined area, particularly at large spatial scales, or where birds occur at very low densities. Often it may be appropriate to consider the proportion of area occupied by the species as an alternative state variable.
MacKenzie, D. I., Nichols, J. D.
openaire   +6 more sources

When no color pattern is available: Application of double observer methods to estimate population size of the Alpine salamander

open access: yesArctic, Antarctic, and Alpine Research, 2021
Monitoring wild populations is an essential tool to assess the conservation status and the ecological requirements of a species. Capture–mark–recapture (CMR), based on individual recognition, is the most commonly used and most effective technique ...
Antonio Romano   +5 more
doaj   +1 more source

Estimating Species Abundance from Occurrence [PDF]

open access: yesThe American Naturalist, 2000
The number of individuals, or the abundance, of a species\ud in an area is a fundamental ecological parameter and a\ud critical consideration when making management and conservation decisions (Andrewartha and Birch 1954; Krebs\ud 1978; Gaston 1994; Caughley and Gunn 1996).
Gaston, K.J., He, F.
openaire   +4 more sources

ProRata:  A Quantitative Proteomics Program for Accurate Protein Abundance Ratio Estimation with Confidence Interval Evaluation

open access: yes, 2016
A profile likelihood algorithm is proposed for quantitative shotgun proteomics to infer the abundance ratios of proteins from the abundance ratios of isotopically labeled peptides derived from proteolysis.
Nagiza F. Samatova (166095)   +8 more
core   +7 more sources

A Rapid Assessment of the Marine Megafauna Biodiversity Around South Bali, Indonesia

open access: yesFrontiers in Marine Science, 2021
A low-cost, small-boat, rapid assessment survey was conducted on the waters off the southern Peninsula of Bali. The objectives were: (1) to conduct an inventory of cetacean species in the study area; (2) to map cetacean distribution to inform the design ...
Putu Liza Kusuma Mustika   +8 more
doaj   +1 more source

Estimating the Density of the Abundant Numbers

open access: yesIntegers, 2019
See the abstract in the attached pdf.
Klyve, Dominic   +2 more
openaire   +4 more sources

Chemical abundances in Seyfert galaxies – X. Sulphur abundance estimates

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT For the first time, the sulphur abundance relative to hydrogen (S/H) in the narrow-line regions of a sample of Seyfert 2 nuclei (Sy 2s) has been derived via direct estimation of the electron temperature. Narrow emission-line intensities from the Sloan Digital Sky Survey (SDSS) Data Release 17 (DR17) [in the wavelength range 3000
Oli L Dors   +14 more
openaire   +3 more sources

Attenuation of species abundance distributions by sampling [PDF]

open access: yes, 2015
Quantifying biodiversity aspects such as species presence/ absence, richness and abundance is an important challenge to answer scientific and resource management questions.
Shimadzu, Hideyasu   +3 more
core   +1 more source

Estimating ungulate abundance while accounting for multiple sources of observation error

open access: yesWildlife Society Bulletin, 2016
Whether a species is rare or overabundant, accurate estimates of population abundance are essential for the development and assessment of conservation plans and management goals.
Pat A. Terletzky, David N. Koons
doaj   +1 more source

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