Fish distribution, concentration, density, use areas, migration pattern data, and essential fish habitat boundaries used in the creation of Audubon Alaska's Ecological Atlas of the Bering, Chukchi, and Beaufort Seas

This dataset contains a variety of spatial data types describing a variety of fish species in the Bering, Chukchi, and Beaufort Seas. Specifically, these data describe relative abundance, general distribution, use areas and types, migration patterns, and areas designated as essential habitat for a variety fish species in the Bering, Chukchi, and Beaufort Seas. These datasets were used by staff at Audubon Alaska and Oceana to create the eight maps displayed in 'Chapter 4: Fishes', in the 'Ecological Atlas of the Bering, Chukchi, and Beaufort Seas'.

This dataset contains four zipped archives of spatial data and metadata and two summary files. The zip files are:
1. ArcticMarine2017_Public_Ch4Fishes.gdb.zip, compiled by Audubon Alaska staff and used to generate the maps in chapter 4 of the Ecological Atlas
2. ch4_vector-4326, containing csv formatted vector data files along with metadata extracted from the geodatabase.
3. ch4_raster, containing geotiff formatted raster data and metadata used in the maps in the Atlas but not included in the geodatabase.
4. ch4_shapefiles, containing updated versions of some of the vector or raster layers in the geodatabase, as delivered separately by Audubon, and without individual metadata records.

The summary files are:
1. audubon_EABCBS_ch4_fishes_manifest.txt, listing all file path, size, and md5sum hash value for each file in each of the zip files,
2. audubon_EABCBS_ch4_fishes_README.txt, providing basic, human-readable metadata about the dataset,
3. audubon_EABCBS_ch4_fishes_data_sources.pdf, listing the data sources used for each map in chapter 6 of the atlas, and
4. audubon_EABCBS_data_sources_appendix.csv, listing the sources used for each spatial synthesis data product created by Audubon Alaska, used to generate the maps in chapter 6, and listed in the data sources pdf.

These files contain only the data used in the Atlas and deemed appropriate for public release. Certain data deemed sensitive were not included in these publicly available data archives.

本数据集包含多种空间数据类型（spatial data types），用于描述白令海、楚科奇海与波弗特海的各类鱼类物种。具体而言，这些数据涵盖了上述海域鱼类的相对丰度、总体分布、栖息区域与类型、洄游模式，以及被指定为关键栖息地（essential habitat）的区域。该数据集由奥杜邦阿拉斯加分会（Audubon Alaska）与海洋守护者（Oceana）的工作人员使用，用于制作《白令海、楚科奇海与波弗特海生态图集》第四章“鱼类”中展示的八幅地图。

本数据集包含四个压缩的空间数据与元数据（metadata）归档文件，以及四份汇总文件。各压缩归档文件分别为：
1. ArcticMarine2017_Public_Ch4Fishes.gdb.zip：由奥杜邦阿拉斯加分会工作人员编制，用于生成该生态图集第四章的地图
2. ch4_vector-4326：包含CSV格式的矢量数据（vector data）文件，以及从地理数据库（geodatabase）中提取的元数据
3. ch4_raster：包含该图集地图中使用的GeoTIFF格式栅格数据（raster data）与元数据，此类数据未收录于地理数据库中
4. ch4_shapefiles：包含奥杜邦阿拉斯加分会单独提供的部分地理数据库内矢量或栅格图层的更新版本，未附带单独的元数据记录

四份汇总文件分别为：
1. audubon_EABCBS_ch4_fishes_manifest.txt：列出所有压缩归档中每个文件的文件路径、大小与MD5哈希值
2. audubon_EABCBS_ch4_fishes_README.txt：提供本数据集的基础可读元数据
3. audubon_EABCBS_ch4_fishes_data_sources.pdf：列出该图集第六章每幅地图所使用的数据源
4. audubon_EABCBS_data_sources_appendix.csv：列出奥杜邦阿拉斯加分会创建的所有空间合成数据产品的数据源，此类产品用于生成该图集第六章的地图，并已收录于上述数据源PDF文件中

上述文件仅包含该生态图集所使用且适合公开发布的数据。部分被认定为敏感的数据未纳入本次公开发布的数据归档中。