A model approach to the population dynamics of the rotifer Brachionus rubens in two-stage chemostat culture

Oecologia ◽  
1985 ◽  
Vol 65 (2) ◽  
pp. 252-259 ◽  
Author(s):  
Karl Otto Rothhaupt
Keyword(s):  
Population Dynamics ◽  
Chemostat Culture ◽  
Two Stage ◽  
Brachionus Rubens ◽  
Model Approach

Modeling population dynamics and nonstationary processes of difficult-to-age fishery species with a hierarchical Bayesian two-stage model

2019 ◽  
Vol 76 (12) ◽  
pp. 2199-2214 ◽  
Author(s):  
Yan Li ◽  
Laura M. Lee ◽  
Jason Rock
Keyword(s):  
North Carolina ◽  
Population Dynamics ◽  
Natural Mortality ◽  
Hierarchical Bayesian ◽  
Stage Model ◽  
Survey Analysis ◽  
Two Stage ◽  
The North ◽  
Fishery Species

Modeling population dynamics and establishing a comprehensive population assessment for fishery species that are difficult to age have been challenging. Determination of age for such species is still an unresolved issue or is at best uncertain. Catch-survey analysis does not require full age information but can still provide a comprehensive population assessment. It was extended to incorporate multiple surveys and multiple sources of uncertainties within the statistical catch-at-age framework in the applications to crustaceans. Here, we further generalize and extend the multiple survey catch-survey analysis into a hierarchical Bayesian two-stage model by applying the hierarchical Bayesian approach. The hierarchical Bayesian approach can sufficiently incorporate uncertainty and expert opinions in parameter estimation. We developed a series of models with different assumptions for natural mortality and catchability, including nonstationary (i.e., time-varying) assumptions. We evaluated model robustness to these assumptions and compared population dynamics estimates and population status determination. We demonstrated the application of the hierarchical Bayesian two-stage model using the North Carolina blue crab (Callinectes sapidus) example. In this example, estimation of population size and fishing mortality and determination of population status were robust to the natural mortality and catchability assumptions. The North Carolina blue crab population is less likely to have nonstationary catchability or nonstationary natural mortality. Its natural mortality is more likely to vary by stage than by sex or over time.

Population dynamics of a two-stage species with recruitment

2012 ◽  
Vol 36 (6) ◽  
pp. 722-729 ◽  
Author(s):  
Lilia M. Ladino ◽  
Jose C. Valverde
Keyword(s):  
Population Dynamics ◽  
Two Stage

A two-stage mixed-effects model approach for gene-set analyses in candidate gene studies

2011 ◽  
Vol 31 (11-12) ◽  
pp. 1190-1202 ◽  
Author(s):  
Roula Tsonaka ◽  
Annette H. M. van der Helm-van Mil ◽  
Jeanine J. Houwing-Duistermaat
Keyword(s):  
Candidate Gene ◽  
Mixed Effects ◽  
Mixed Effects Model ◽  
Two Stage ◽  
Gene Set ◽  
Candidate Gene Studies ◽  
Model Approach

Population dynamics of the cactus Mammillaria gaumeri: an integral projection model approach

2012 ◽  
Vol 54 (2) ◽  
pp. 321-334 ◽  
Author(s):  
Merari Esther Ferrer-Cervantes ◽  
Martha Elena Méndez-González ◽  
Pedro-Francisco Quintana-Ascencio ◽  
Alfredo Dorantes ◽  
Gabriel Dzib ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Integral Projection Model ◽  
Projection Model ◽  
Integral Projection ◽  
Model Approach
Sign in / Sign up

Export Citation Format

Share Document