Biomass dynamic model for multiple data series: An improved approach for the management of the red grouper (Epinephelus morio) fishery of the Campeche Bank, Mexico

2021 ◽  
pp. 101962
Author(s):  
Olivia Echazabal-Salazar ◽  
Enrique Morales-Bojórquez ◽  
Francisco Arreguín-Sánchez
Keyword(s):  
Dynamic Model ◽  
Data Series ◽  
Multiple Data ◽  
Epinephelus Morio ◽  
Red Grouper ◽  
Biomass Dynamic

Spatial and temporal dynamics of Pacific capelin Mallotus catervarius in the Gulf of Alaska: implications for ecosystem-based fisheries management

2020 ◽  
Vol 637 ◽  
pp. 117-140 ◽  
Author(s):  
DW McGowan ◽  
ED Goldstein ◽  
ML Arimitsu ◽  
AL Deary ◽  
O Ormseth ◽  
...  
Keyword(s):  
Temporal Dynamics ◽  
Marine Ecosystem ◽  
Gulf Of Alaska ◽  
Data Series ◽  
Limited Information ◽  
Important Species ◽  
Multiple Data ◽  
Spatial And Temporal Dynamics ◽  
Spawning Areas ◽  
Spatio Temporal

Pacific capelin Mallotus catervarius are planktivorous small pelagic fish that serve an intermediate trophic role in marine food webs. Due to the lack of a directed fishery or monitoring of capelin in the Northeast Pacific, limited information is available on their distribution and abundance, and how spatio-temporal fluctuations in capelin density affect their availability as prey. To provide information on life history, spatial patterns, and population dynamics of capelin in the Gulf of Alaska (GOA), we modeled distributions of spawning habitat and larval dispersal, and synthesized spatially indexed data from multiple independent sources from 1996 to 2016. Potential capelin spawning areas were broadly distributed across the GOA. Models of larval drift show the GOA’s advective circulation patterns disperse capelin larvae over the continental shelf and upper slope, indicating potential connections between spawning areas and observed offshore distributions that are influenced by the location and timing of spawning. Spatial overlap in composite distributions of larval and age-1+ fish was used to identify core areas where capelin consistently occur and concentrate. Capelin primarily occupy shelf waters near the Kodiak Archipelago, and are patchily distributed across the GOA shelf and inshore waters. Interannual variations in abundance along with spatio-temporal differences in density indicate that the availability of capelin to predators and monitoring surveys is highly variable in the GOA. We demonstrate that the limitations of individual data series can be compensated for by integrating multiple data sources to monitor fluctuations in distributions and abundance trends of an ecologically important species across a large marine ecosystem.

Paracapillaria epinepheli n. sp. (Nematoda: Capillariidae) from the red grouper Epinephelus morio (Pisces) from Mexico

1996 ◽  
Vol 33 (2) ◽  
pp. 149-153 ◽  
Author(s):  
František Moravec ◽  
Edgar Mendoza-Franco ◽  
Joaquin Vargas-Vázquez
Keyword(s):  
Epinephelus Morio ◽  
Red Grouper

scholarly journals A VBA module simulation for finding optimal lag order in time series models and its use on teaching financial data computation

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Alan Mustafa ◽  
Abdulnasser Hatemi-J
Keyword(s):  
Dynamic Model ◽  
Information Criterion ◽  
Visual Basic ◽  
Financial Data ◽  
Data Series ◽  
Time Series Models ◽  
Microsoft Excel ◽  
Step Process ◽  
Visual Basic For Applications ◽  
Multiple Variables

In this study, a tool has been designed and developed for learning about the concept of lag order within a dynamic model, which can be used in any teaching classes on statistics and financial data computation. To show a solution for a complex and multi-step process of finding the optimal lag order for multiple variables data series based on an information criterion a module using Visual Basic for Applications (VBA) for Microsoft Excel (MS Excel) is being developed. This module can be used for estimating a multivariate dynamic model as well as determining the optimal lag order of such a model.

Historical biomass, fishing mortality, and recruitment trends of the Campeche Bank red grouper (Epinephelus morio)

2005 ◽  
Vol 71 (3) ◽  
pp. 267-277 ◽  
Author(s):  
Enrique Giménez-Hurtado ◽  
Raúl Coyula-Pérez-Puelles ◽  
Salvador E. Lluch-Cota ◽  
Abel A. González-Yañez ◽  
Víctor Moreno-García ◽  
...  
Keyword(s):  
Fishing Mortality ◽  
Epinephelus Morio ◽  
Red Grouper

scholarly journals Modeling Discards in Stock Assessments: Red Grouper Epinephelus morio in the U.S. Gulf of Mexico

Fishes ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 7
Author(s):  
Kyle W. Shertzer ◽  
Erik H. Williams ◽  
Skyler R. Sagarese
Keyword(s):  
Gulf Of Mexico ◽  
Stock Assessment ◽  
Time Varying ◽  
Discard Mortality ◽  
Stock Assessments ◽  
Epinephelus Morio ◽  
Red Grouper ◽  
Management Advice ◽  
The U.S

To be as accurate as possible, stock assessments should account for discard mortality in fisheries if it occurs. Three common approaches to modeling discards in assessments are to lump dead discards with landings, treat dead discards as their own fleet, or link them conversely with landings through use of a retention function. The first approach (lumping) implicitly assumes that the selectivity of landings applies also to discards. In many cases, that assumption is false, for example, if discards comprise smaller fish than do landings. The latter two approaches avoid the assumption by modeling discards explicitly with their own selectivity pattern. Here, we examine these approaches to modeling discards. Using a simulation study, we demonstrate that the two approaches to modeling discards explicitly can provide identical results under both static and time-varying conditions. Then, using a stock assessment case study of red grouper Epinephelus morio in the U.S. Gulf of Mexico, we demonstrate that in practice the approaches to modeling discards can provide different outcomes, with implications for the resultant management advice. We conclude by comparing and contrasting the different approaches, calling for more research to elucidate which approach is most suitable under various sources of error typically encountered in discard data.

scholarly journals Spatial dynamics of the red grouper Epinephelus morio (Pisces: Serranidae) on the Campeche Bank, Gulf of Mexico

2013 ◽  
Vol 77 (2) ◽  
pp. 313-322 ◽  
Author(s):  
Jorge A. López-Rocha ◽  
Francisco Arreguín-Sánchez
Keyword(s):  
Gulf Of Mexico ◽  
Spatial Dynamics ◽  
Epinephelus Morio ◽  
Red Grouper
Sign in / Sign up

Export Citation Format

Share Document