Photographic images of benthic coral, algae and invertebrate species in marine habitats and subhabitats around offshore islets in the main Hawaiian Islands, April 2 - September 20, 2007 (NODC Accession 0043046)

The marine algae, invertebrate and fish communities were surveyed at ten islet or offshore island sites in the Main Hawaiian Islands in the vicinity of Lanai, (Puu Pehe and Poo Poo Islets), Maui (Kaemi and Hulu Islets and the outer rim of Molokini), off Kaulapapa National Historic Park on Molokai (Mokapu, Okala and Namoku Islets) and Oahu (Kaohikaipu Islet and outside Kapapa Island) in 2007. Survey protocol at all sites consisted of an initial reconnaissance survey on which all algae, invertebrates and fishes that could be identified on site were listed and or photographed and collections of algae and invertebrates were collected for later laboratory identification. Following the reconnaissance surveys, quantitative estimates of coral and algal coverage and size and biomass of fishes along 25 m transects were conducted at each site and their locations
were recorded using GPS.

This dataset consists of the photographic images from this project (.jpg) with associated .mxd and .lyr files for use in a GIS, plus documentation. In a separate NODC Accession, 0042684, quantitative results in spreadsheets are provided. The images could serve useful as new software becomes available for assessing coral and algae types and coverage via digital photographs.

2007年，研究人员于夏威夷主群岛的拉奈岛（普佩赫岛与普普岛）、毛伊岛（凯埃米岛、胡卢岛及莫洛基尼岛外环）、莫洛凯岛考拉帕帕国家历史公园周边（莫卡普岛、奥卡拉岛与纳莫库岛）以及瓦胡岛（科希卡伊普岛与卡帕帕岛外侧）的10个小岛或离岸岛点位，开展了海藻、无脊椎动物与鱼类群落调查。所有点位的调查流程均包含初步踏勘：现场可识别的全部海藻、无脊椎动物与鱼类均完成记录或拍摄，并采集海藻与无脊椎动物样本用于后续实验室鉴定。踏勘完成后，研究人员在每个点位沿25米样带开展珊瑚与藻类盖度、鱼类个体大小及生物量的定量估算，并通过全球定位系统（Global Positioning System, GPS）记录各点位的坐标信息。本数据集包含本项目产出的JPEG格式摄影图像，以及配套的可用于地理信息系统（Geographic Information System, GIS）的.mxd与.lyr格式文件，同时附带相关文档资料。另有一份独立的美国国家海洋数据中心（National Oceanographic Data Center, NODC）存档数据集（编号0042684），其中以电子表格形式提供了本次调查的定量结果。随着可通过数码照片评估珊瑚与藻类种类及盖度的新型软件面世，本数据集的图像资料将具备更高的应用价值。