A stock assessment method for North Pacific fish and invertebrate stocks which allows for age and length dynamics

This project developed a package to apply age-, size- and age-size-structured models. The tool will be available for use by stock assessment analysts, and is fully documented in Chapter 3 (technical description) and 7 (user manual) of the report of NPRB project 1304. The code for the model is written using Auto-differentiation Model Builder (http://www.admb-project.org/), which is freely available. The code can be compiled for Windows, Mac and Linux, but testing was restricted to the Windows platform. The code for the model will be made available via the Puntlab website (http://puntlab.washington.edu/). There are 3 data files archived for this project: EBSTannerCrab.DAT, EBSPacificCod, DAT, PribBlue.DAT. These files are raw-text input files that have been formatted to meet the model input specifications. They are based on re-formatted source datasets that are cited in the Methods section of this record. There are additional separate files, in tab-seperated format, describing the larger datasets used in the model, such as size-frequency of samples for a species. This dataset was generated under NPRB project 1304.

本项目开发了一款可应用年龄结构、体型结构及年龄-体型耦合结构模型的工具包。该工具可供渔业资源评估分析师使用，其完整文档收录于NPRB项目1304报告的第3章（技术说明）与第7章（用户手册）中。模型代码基于自动微分模型构建器（Auto-differentiation Model Builder，http://www.admb-project.org/）编写，该工具可免费获取。该代码可针对Windows、Mac及Linux系统进行编译，但测试仅在Windows平台上完成。模型代码将通过Puntlab网站（http://puntlab.washington.edu/）对外发布。本项目归档了3份数据文件：EBSTannerCrab.DAT、EBSPacificCod, DAT、PribBlue.DAT。上述文件为符合模型输入规范的纯文本输入文件，其数据源自本记录方法部分引用的经重新格式化的源数据集。另有若干独立的制表符分隔格式文件，用于说明模型所使用的大型数据集，例如某物种种群的样本体型频率数据。本数据集基于NPRB项目1304开发生成。