| Summary: | The purpose of this dataset was to collect length, weight, and diameter measurements of bull kelp (Nereocystis luetkeana) for use in determination of biomass. This is based on previous work demonstrating that bull kelp biomass can be predicted by sub-bulb diameter (Stekoll et al. 2006). These data were collected in conjunction with drone imagery to ground-truth biomass estimates obtained from Landsat satellite imagery. For each sampled plant, date, GPS location of the bed, stipe length and weight, blade length and weight, bulb and sub-bulb diameter, and level of erosion were recorded. These data were collected as part of a larger, interdisciplinary project (Apex Predators, Ecosystems, and Community Sustainability or APECS; http://apecs-ak.org/) aimed to assess the impacts of sea otter recolonization on the natural and human ecosystems of Prince of Wales Island, Southeast Alaska. Other datasets related to APECS are archived with KNB.
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