University of Porto Interdisciplinary Centre for Marine and Environmental Research (Porto)
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The data was collected under the MARBEF BIOFUSE long term monitoring program. Each participant of this program is selected 5 shores, chosen to maximise likelihood of differences in diversity (e.g. along gradient of stress - wave exposure, pollution, etc or with different recruitment regimes). Fixed sampling units randomly selected. Size of sampling Atlantic 50 x 50 cm quadrat. 5 quadrats, grid of 25 squares used to give visual estimate to nearest 5 % cover. 2 samples per year (ie every 6 months) for 2 years commencing Winter 2005-6. Taxonomic resolution: best possible resolution achievable non-destructively in the field, including macrofauna (visible to naked eye).
Based on new records, literature references and herbarium data, an updated checklist of the benthic marine algae of the northern Portuguese coast is provided.
Biodiversity data collected twice a year by schools along a fixed transect in the intertidal area, Portugal 2005-2010.
The CETUS dataset contains effort-based occurrence records collected during a cetacean monitoring programme in the Eastern North Atlantic, since 2012.