SCR_Aerial_PointConception_1999_2012_KelpPersistence

These raster and vector datasets were developed for the Sea Grant South Coast MPA Baseline Program as part of the project “Nearshore Substrate Mapping and Change Analysis using Historical and Concurrent Multispectral Imagery” (#R/MPA 30 10-049). The study region is the South Coast Region (SCR). Kelp thematic maps from 1999-2012 were used for this product. Ocean Imaging acquired the imagery and classification data used for this analysis from its own Digital Multispectral Camera (DMSC), the Microsoft UltraCam-X aerial camera system and from kelp habitat classifications archived by the California Department of Fish and Wildlife (CDFW). Details on this systems and the data processing are below in the Lineage section of this document. The persistence analyses show the persistence of kelp beds in the SCR and MPAs as a percentage of the number of years analyzed. The coverage area is from Conception, CA south to Imperial Beach, CA. The GIS analysis product files are deliverd are in GeoTIFF (.tif) and ESRI Shapefile formats as well as Adobe Acrobat PDF files. This raster dataset contains a persistence analysis of giant kelp beds along the California South Coast Region (SCR) from from Point Conception, CA down to Imperial beach, CA. This specific raster classification includes the Point Conception SMR and Kashtayit SMCA. This dataset was originally uploaded to Oceanspaces (http://oceanspaces.org/) and the Knowledge Network for Biocomplexity (KNB, https://knb.ecoinformatics.org/data) in 2013 as part of the South Coast baseline monitoring program. In 2022 this dataset was moved to the California Ocean Protection Council Data Repository (https://opc.dataone.org/) by Mike Esgro ([e-mail]) and Rani Gaddam ([e-mail]). At that time the GIS analysis products were added to the dataset. The long-term California MPA boundary and project info tables can be found as a separate dataset here: https://opc.dataone.org/view/doi:10.25494/P64S3W.

本批栅格与矢量数据集系为海洋资助计划（Sea Grant）南海岸海洋保护区（Marine Protected Area, MPA）基线项目开发，作为“利用历史与同期多光谱影像开展近岸底质制图及变化分析（Nearshore Substrate Mapping and Change Analysis using Historical and Concurrent Multispectral Imagery）”（项目编号：#R/MPA 30 10-049）研究的组成部分。研究区域为南海岸区域（South Coast Region, SCR）。本产品采用1999-2012年的巨藻专题图件。影像与分类数据由Ocean Imaging公司通过其自主研发的数字多光谱相机（Digital Multispectral Camera, DMSC）、微软（Microsoft）UltraCam-X航空相机系统获取，同时使用了加州鱼类与野生动物部（California Department of Fish and Wildlife, CDFW）存档的巨藻生境分类数据。本系统与数据处理的详细信息见本文档的“数据谱系（Lineage）”章节。

持久性分析结果展示了南海岸区域及海洋保护区内巨藻床的存续情况，以分析年限内的存续年数占比形式呈现。数据覆盖范围为从加州康塞普申角（Point Conception, CA）向南至加州帝国海滩（Imperial Beach, CA）。本研究产出的地理信息系统（Geographic Information System, GIS）分析成果文件格式包括GeoTIFF（.tif）、ESRI Shapefile以及Adobe Acrobat PDF文件。

本栅格数据集针对加州南海岸区域（SCR）从康塞普申角至帝国海滩的巨藻床开展了持久性分析，其中特定栅格分类涵盖了康塞普申角海洋保护区（Point Conception SMR）与卡斯泰伊特海洋保护管理区（Kashtayit SMCA）。本数据集最初于2013年作为南海岸基线监测项目的一部分，上传至Oceanspaces平台（http://oceanspaces.org/）与生物复杂性知识网络（Knowledge Network for Biocomplexity, KNB）（https://knb.ecoinformatics.org/data）。2022年，Mike Esgro（[e-mail]）与Rani Gaddam（[e-mail]）将本数据集迁移至加州海洋保护委员会（California Ocean Protection Council）数据仓库（https://opc.dataone.org/），并同期补充了GIS分析成果至数据集内。加州长期海洋保护区边界与项目信息表格可通过以下独立数据集获取：https://opc.dataone.org/view/doi:10.25494/P64S3W。