Information associated with the population dynamics of organisms
This dataset contains aggregated observations of predation and herbivory on tethered bait in each quadrat of sites around the Rowley River and the south side of Sawyer Island at the Plum Island LTER. Measurements consist of the consumption status of tethered squid or kelp pieces as a measure of energy transfer between trophic levels. Pieces were left in the field for five days and observers recorded the status of bait over time as either entirely missing, partially consumed, having scrape marks, or fully intact. These measurements can be used to calculate consumption rates (i.e. energy transfer) over time. Notes include fields discussing any additional observations - e.g., if a stick was found missing.
3x3cm pieces of dried squid and kelp were attached to wooden dowls via transparent fishing line. Dowels were inserted inot the substrate of the upper right hand corner of each quadrat so that the squid and kelp rest on the substrae. Both were placed far enough from each other so as not to overlap. Bait checks were done daily and status was noted (W,M,P,S). See HTL-RO-ST-MAR-Sites for site description.
Version 01: January 04, 2022, data and metadata updates to comply with importation to DEIMS7 and LTER Data Portal. Used MarcrosExportEML_HTML (working)pie_excel2007_Jul2021 7/26/21 9:04 AM for QA/QC to EML 2.1.0.