Algal Blooms Sweden - 2023

Dataset containing images of algal blooms in the Baltic Sea. The data is provided with a metadata description containing time spotted, comments, municipality, county and coordinates of each image. The images and metadata file are archived in a zip package. Images show various summer surface accumulations of so-called harmful algal blooms (HABs) or nuisance blooms. Typically, these blooms consist of species of cyanobacteria of the order of Nostocales, including toxic Nodularia and Aphanizomenon. These blooms were verified by Informationscentralen (Länstyrelsen Stockholm and Länstyrelsen Västerbotten). However, the blooms seen in the images have not been taxonomically annotated by microscopy nor genetic analysis. The following data fields are contained in the metadata file (provided in csv format):

time_spotted: date that bloom was spotted, type: datetime

algae_photo: url to photo submitted, type: string

x-coord (NORTH): x-coordinate of position where bloom was seen, type: float

y-coord (EAST): y-coordinate of position where bloom was seen, type: float

coord_system: Coordinate system, type: string

place: County where bloom was spotted, type: string

municipality: Municipality where bloom was spotted, type: string

Total observations: 60