The Estimation of Population Size by a Marking and Recapture Procedure

1958 ◽  
Vol 15 (1) ◽  
pp. 19-25 ◽  
Author(s):  
D. B. DeLury
Keyword(s):  
Population Size ◽  
Confidence Limits ◽  
Regression Theory ◽  
Standard Regression

The Schumacher and Schnabel estimates of population size are compared and reasons are given for preferring the Schumacher formula. This formula is extended to permit mortality and recruitment in the population. Confidence limits are provided according to standard regression theory.

Plotting biological data in various ways.

2021 ◽  
pp. 37-78
Author(s):  
Donald L. J. Quicke ◽  
Buntika A. Butcher ◽  
Rachel A. Kruft Welton
Keyword(s):  
Population Size ◽  
Rural Population ◽  
Biological Data ◽  
Statistical Testing ◽  
Line Graphs ◽  
Confidence Limits ◽  
Trematode Infection ◽  
Error Bars

Abstract This chapter introduces plotting line graphs, bar charts, pie charts, box and whisker plots. It will troubleshoot the main areas where you are likely to encounter problems. It will show how to create log plots, add legends, error bars, notches and confidence limits, and introduce confidence limits and statistical testing. Examples are given, including bryophytes up a mountain; relationship between rural population size and the potential remaining intact forest; dietary differences between hornbill species (Buceros bicornis, Rhyticeros undulatus, Anthracoceros albirostris and Anorrhinus (Ptilolaemus) tickelli); and study of the level of trematode infection in various species of fish in Thailand.

Plotting biological data in various ways.

2021 ◽  
pp. 37-78
Author(s):  
Donald L. J. Quicke ◽  
Buntika A. Butcher ◽  
Rachel A. Kruft Welton
Keyword(s):  
Population Size ◽  
Rural Population ◽  
Biological Data ◽  
Statistical Testing ◽  
Line Graphs ◽  
Confidence Limits ◽  
Trematode Infection ◽  
Error Bars

Abstract This chapter introduces plotting line graphs, bar charts, pie charts, box and whisker plots. It will troubleshoot the main areas where you are likely to encounter problems. It will show how to create log plots, add legends, error bars, notches and confidence limits, and introduce confidence limits and statistical testing. Examples are given, including bryophytes up a mountain; relationship between rural population size and the potential remaining intact forest; dietary differences between hornbill species (Buceros bicornis, Rhyticeros undulatus, Anthracoceros albirostris and Anorrhinus (Ptilolaemus) tickelli); and study of the level of trematode infection in various species of fish in Thailand.

The time taken for a population to grow from size m to size km

1983 ◽  
Vol 20 (04) ◽  
pp. 728-736 ◽  
Author(s):  
Aidan Sudbury
Keyword(s):  
Population Size ◽  
Central Limit ◽  
Limit Theorems ◽  
Central Limit Theorems ◽  
Confidence Limits

Central limit theorems are given for the time taken for a population to increase by a factor k > 1 for a supercritical process, or to decrease by a factor k < 1 for a subcritical process. The size of errors is investigated so that confidence limits can be given for these times to O (m ½) where m is the population size at t = 0.

The time taken for a population to grow from size m to size km

1983 ◽  
Vol 20 (4) ◽  
pp. 728-736 ◽  
Author(s):  
Aidan Sudbury
Keyword(s):  
Population Size ◽  
Central Limit ◽  
Limit Theorems ◽  
Central Limit Theorems ◽  
Confidence Limits

Central limit theorems are given for the time taken for a population to increase by a factor k > 1 for a supercritical process, or to decrease by a factor k < 1 for a subcritical process. The size of errors is investigated so that confidence limits can be given for these times to O (m½) where m is the population size at t = 0.

Estimation of survival rates and population size from mark-recapture experiments of bait-caught haematophagous insects

1987 ◽  
Vol 77 (4) ◽  
pp. 589-602 ◽  
Author(s):  
A. Saul
Keyword(s):  
Regression Analysis ◽  
Population Size ◽  
Papua New Guinea ◽  
Survival Rates ◽  
New Guinea ◽  
Simultaneous Equations ◽  
Confidence Limits ◽  
Mark Recapture ◽  
Estimated Parameters ◽  
Feeding Cycle

AbstractA method of calculating survival rates and population size from mark-recapture experiments for bait-caught haematophagous insects is presented. The method fits the data to a series of simultaneous equations. This procedure is not affected by the cyclical nature of the recapture rate experienced in this type of experiment. Methods are presented which allow estimates of the confidence limits on the estimated parameters. Unlike earlier methods based upon a regression analysis of the log (number recaptured), this method allows estimates of the population size in addition to the survival and length of the feeding cycle of the mosquitoes. The methods have been applied to data collected in Papua New Guinea and give estimates of the total number of Anopheles feeding per night in different villages ranging from 3000 to 46 000.

Reduction of spermatogonia and testosterone in rat testes flown on space lab-3

1986 ◽  
Vol 44 ◽  
pp. 248-249
Author(s):  
Delbert E. Philpott ◽  
W. Sapp ◽  
C. Williams ◽  
T. Fast ◽  
J. Stevenson ◽  
...  
Keyword(s):  
Social Interaction ◽  
Social Status ◽  
Population Size ◽  
Physiological Response ◽  
Social Rank ◽  
Reproductive Function ◽  
Testicular Development ◽  
Organ Weights ◽  
Reproductive Maturation ◽  
Metabolic Activities

Space Lab 3 (SL-3) was flown on Shuttle Challenger providing an opportunity to measure the effect of spaceflight on rat testes. Cannon developed the idea that organisms react to unfavorable conditions with highly integrated metabolic activities. Selye summarized the manifestations of physiological response to nonspecific stress and he pointed out that atrophy of the gonads always occurred. Many papers have been published showing the effects of social interaction, crowding, peck order and confinement. Flickinger showed delayed testicular development in subordinate roosters influenced by group numbers, social rank and social status. Christian reported increasing population size in mice resulted in adrenal hypertrophy, inhibition of reproductive maturation and loss of reproductive function in adults. Sex organ weights also declined. Two male dogs were flown on Cosmos 110 for 22 days. Fedorova reported an increase of 30 to 70% atypical spermatozoa consisting of tail curling and/or the absence of a tail.

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