C. Richard Robins’s scientific contributions

... The pelagic nekton organisms were classified into the groups Epipelagic-Mesopelagic < Mesopelagic < Mesopelagic-Bathypelagic < Mesobenthopelagic, according to their known habitats described in literature (Clarke and Lu, 1975;Pearcy et al., 1977;Smith and Heemstra, 1986;van der Spoel and Bleeker, 1991;Brodeur and Yamamura, 2005;Hastie et al., 2009;Davison et al., 2015;Romero-Romero et al., 2019). Organisms were classified as being epipelagic (<200 m), mesopelagic (from 200 to 1000 m), bathypelagic (below 1000 m and ~100 m from the seafloor) and benthopelagic (living near the bottom but performing excursions into the pelagic realm) according to definitions of the vertical zonation of the pelagic ocean from Del Giorgio and Duarte Table 1 Mean body length (mm) of crustaceans (abdomen and carapace length), squids (dorsal mantle length) and fishes (standard length), total number of specimens (n), habitat range and feeding mode obtained from literature, δ 15 N and δ 13 C (‰), mean mercury (Hg) concentrations (μg g − 1 dw) and mean estimated trophic level (Mean TL) for the species or taxa on which stable isotope analyses were performed at La Pérouse and MAD-Ridge seamounts, the south-western Mozambique Channel (MZC) and Reunion Island. ...

Reference:

Mercury concentrations and stable isotope ratios (δ13C and δ15N) in pelagic nekton assemblages of the south-western Indian Ocean