IMIS - Marine Onderzoeksgroepen

This dataset contains counts and individual length measurements of the planktonic larval stages of the squat lobster Grimothea gregaria (Fabricius, 1793) from two shallow coastal stations in Port William, East Falkland (Falkland Islands, Southwest Atlantic). Plankton samples were collected about fortnightly between August 2020 and May 2022 with a bongo net towed horizontally at 2-3 m depth. Larvae were sorted from the whole samples, counted and assigned to six developmental stages (prezoea, zoea I to IV and megalopa) following a key modified after Roberts (1973). A subsample of the larvae was measured individually (total body length for prezoea and zoea stages, carapace length for megalopae).\nThe data are organised as sampling events. Each station visit contains one or two net samples with stage counts, including zero counts. The individually measured specimens are given as separate occurrence records in a subsample event and are linked to the count records they were taken from, so that length data and abundance data can be used together without counting any specimen twice.