Marine Ecology Department, University of Bremen
Assessment of mobile invertebrates associated with mats of the red alga Phyllophora crispa at Giglio Island, Mediterranean Sea
Data Publisher for Earth & Environmental Science
Dataset on the epibenthic abundance of mobile invertebrates on P. crispa habitats at two study sites (Fenaio and Secca II) in the NW Mediterranean Sea (Giglio Island, Italy). Samples were obtained via SCUBA diving using a newly designed sampling device appropriate for mobile fauna in June 2023 and analyzed by microscopic determination and counting of specimens. The dataset includes details on the sampling efforts, diversity indices (Shannon (H'), Pielou (J'), Simpson (D)), and densities of organisms per m² seafloor. The number of individuals per family was counted. Densities of mobile invertebrates were extrapolated using wet weights and measured surface area of P. crispa samples. Detailed descriptions of the calculations can be found in the corresponding publication (Töpfel et al. 2025).
Mediterranean Red Macro Algae Mats as Habitat for High Abundances of Serpulid Polychaetes
New Insights into a Mediterranean Sea Benthic Habitat: High Diversity of Epiphytic Bryozoan Assemblages on Phyllophora crispa (Rhodophyta) Mats
High Diversity and Abundance of Foraminifera Associated with Mediterranean Benthic Red Algae Mats
The measurement of diversity in different types of biological collections
Sample area as seafloor area (201.06 cm²) + area of Phyllophora crispa substrate [cm²]
Number of non-sessile invertebrate families present
Total abundance of non-sessile invertebrates per Phyllophora crispa substrate area (= sample surface [cm²])
Total abundance of non-sessile invertebrates per seafloor area (201.06 cm² + area of Phyllophora crispa substrate [cm²] = sample area [m²])
ecosystem engineers; Epifauna; invertebrates; Mediterranean Sea; Phyllophora crispa
Further funding: This study was supported by baseline funding of the Marine Ecology department, University of Bremen and by the Institute for Marine Biology (Campese, Italy). A.Töpfel and M.Steinhoff received funding via the ERASMUS+ program.
Assessment of Non-Sessile Invertebrates Associated with Mats of the Red Alga Phyllophora crispa at Giglio Island, Mediterranean Sea