Oregon Fish Habitat Distribution

<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Oregon Fish Habitat Oregon Fish Habitat Distribution. These data describe areas of suitable habitat believed to be used currently or historically by native or non-native fish populations. The term "currently" is defined as within the past five reproductive cycles. Historical habitat includes suitable habitat that fish no longer access and will not access in the foreseeable future without human intervention. This information is based on sampling, the best professional opinion of Oregon Dept. of Fish and Wildlife or other natural resources agency staff biologists or modeling (see the fhdBasis field). Due to natural variations in run size, water conditions, or other environmental factors, some habitats identified may not be used annually. These data now comply with the Oregon Fish Habitat Distribution Data Standard that was adopted by the Oregon Geographic Information Council in April 2020. The Standard document can be found at: https://www.oregon.gov/geo/standards/OregonFishHabitatDistributionDataStandard_v4.pdf. Historical habitat distribution data are within the scope of the standard and are identified via the habitat use (fhdUseType) attribute. Historical habitats are only identified outside of currently accessible habitat and are not comprehensive. Data representing current habitat for anadromous and resident salmonid species are generally more comprehensive than data for non-game and non-native fish species. All datasets are subject to update as new information becomes available. Key features of the Oregon Fish Habitat Distribution Data include: species, run, life history, habitat use, origin, production, the basis for each record, originator name, originator entity and reference. Habitat distribution data are mapped at a 1:24,000 scale statewide and are based on the National Hydrography dataset. The data are made available as GIS files in both shapefile and ESRI geodatabase format. The data were developed over an extensive time period ranging from 1996 to 2024. The data are now managed on the National Hydrography Dataset and have been synchronized to December 2021 NHD geometry.Distribution for seventeen native migratory species / runs, including numerous resident species. Not all habitat distribution datasets are comprehensive.</SPAN></P></DIV></DIV></DIV>

俄勒冈州鱼类栖息地（Oregon Fish Habitat）分布数据集。这些数据描述了当前或历史上被本土或外来鱼类种群所利用的适宜栖息区域。其中“当前”的定义为过去五个繁殖周期以内。历史栖息地指鱼类目前已无法进入，且在可预见的未来若无人类干预也无法重新进入的适宜栖息区域。本信息基于采样调查、俄勒冈州鱼类与野生动物局（Oregon Dept. of Fish and Wildlife）或其他自然资源机构的专业生物学家的权威判断，或相关模型建模（详见fhdBasis字段）。由于洄游种群规模、水文条件或其他环境因素的自然波动，部分已识别的栖息地可能并非每年都会被鱼类利用。本数据集现已符合俄勒冈州地理信息委员会（Oregon Geographic Information Council）于2020年4月通过的《俄勒冈州鱼类栖息地分布数据标准》。该标准文档可通过以下链接获取：https://www.oregon.gov/geo/standards/OregonFishHabitatDistributionDataStandard_v4.pdf。历史栖息地分布数据纳入本标准范畴，并通过栖息地利用（fhdUseType）属性进行标识。历史栖息地仅识别于当前可进入栖息地之外，并非全覆盖。针对洄游性和定居性鲑科鱼类的当前栖息地数据，整体覆盖程度通常高于非游钓鱼类及外来鱼类物种的相关数据。所有数据集均会随新信息的获取而更新。俄勒冈州鱼类栖息地分布数据的核心特征包括：物种、洄游类群、生活史类型、栖息地利用类型、起源属性、繁育属性、每条记录的依据信息、发起机构名称、发起实体及参考资料。栖息地分布数据以1:24,000的比例尺在全州范围内进行制图，数据基于国家水文数据集（National Hydrography Dataset，简称NHD）。数据集以shapefile和ESRI地理数据库（ESRI geodatabase）两种GIS文件格式提供。本数据集的开发周期跨度为1996年至2024年。目前数据托管于国家水文数据集，并已同步至2021年12月版的NHD几何数据。本数据集涵盖17种本土洄游物种/类群，以及众多定居性物种。并非所有栖息地分布数据集均实现全面覆盖。