Results 261 to 270 of about 3,139,827 (291)

Monitoring microbial population dynamics at low densities

Review of Scientific Instruments, 2012
We propose a new and simple method for the measurement of microbial concentrations in highly diluted cultures. This method is based on an analysis of the intensity fluctuations of light scattered by microbial cells under laser illumination. Two possible measurement strategies are identified and compared using simulations and measurements of the ...
Julou, Thomas, Desprat, Nicolas, Bensimon, David, Croquette, Vincent   +3 more
openaire   +3 more sources

Population Monitoring for Acute Exposure to 210Po

Journal of Occupational & Environmental Medicine, 2008
To investigate the feasibility of using single void urine samples to monitor internal radiation exposure of first responders and large populations int he event of a radiological incident involving the intentional dispersal of 210Po.Urinary excretion of 210Po was evaluated and organ absorbed and effective doses were calculated subsequent to an acute ...
Jeri L, Anderson, Henry B, Spitz, Robert D, Daniels   +2 more
openaire   +2 more sources

Auditory monitoring of anuran populations

2009
Abstract Because anurans rely on vocalization for most communication, detection of species-specific calls provides relatively efficient mechanisms for studying and evaluating the status of anuran populations. Consequently, most amphibian monitoring programs focus on anurans and use call detection as their sole or primary monitoring ...
Michael E Dorcas, Steven J Price, Susan C Walls, William J Barichivich   +3 more
openaire   +1 more source

Monitoring coyote population dynamics by genotyping faeces

Molecular Ecology, 2005
AbstractReliable population estimates are necessary for effective conservation and management, and faecal genotyping has been used successfully to estimate the population size of several elusive mammalian species. Information such as changes in population size over time and survival rates, however, are often more useful for conservation biology than ...
L R, Prugh, C E, Ritland, S M, Arthur, C J, Krebs   +3 more
openaire   +2 more sources

Population Monitoring

2023
J. Joshua Nowak, Mark A. Hurley, Paul M. Lukacs, Daniel Walsh, C. Leann White   +4 more
openaire   +1 more source

Monitoring Vertebrate Populations

Journal of Range Management, 1999
C. Kenneth Dodd, William L. Thompson, Gary C. White, Charles Gowan   +3 more
openaire   +1 more source

Monitoring terrestrial breeding bird populations

1991
It is important to monitor bird populations for two main reasons. First, birds form an important and popular wildlife resource which is worth conserving in its own right. Second, given that it is impractical to monitor all groups of organisms on a wide scale, birds provide valuable indicators of the state of the environment.
openaire   +1 more source

Monitoring folate status in population‐based surveys

BioFactors, 2011
AbstractFolate status assessments depend primarily on the measurement of biomarkers such as serum and red blood cell folate. Lessons learned from a large national monitoring system such as the National Health and Nutrition Examination Survey and a public health intervention such as the implementation of folic acid fortification in the United States ...
openaire   +2 more sources

Deer population monitoring methods

2005
La gestion des populations de cervidés ces dernières années s'oriente vers l'utilisation de méthodes légères de suivi : les indicateurs biologiques. Ces méthodes de gestion des populations de chevreuils ou de cerfs sont présentées dans cet article. L'utilisation à grande échelle, parfois départementale, de ces méthodes est encourageante bien qu'un ...
openaire   +1 more source

Monitoring Ancient Murrelet Breeding Populations

Colonial Waterbirds, 1988
A. J. Gaston, I. L. Jones, D. G. Noble
openaire   +1 more source