Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: A comparative study of the fish population within Hopkins Marine Life Refuge: 1969-1971 and 1996
Student Author(s): Chang, Marshall C-D
Macht, Peter J.
Rillorta, Shanette M.
White, Jenny A.
Faculty Advisor(s): Bernardi, Giacomo
Pages: 19
Location: Senior Thesis UC Santa Cruz
Abstract: The presence and abundance of subtidal fish species at Hopkins Marine Life Refuge(HMLR) were investigated in 1996 and compared to a parallel study done by the California Department of Fish and Game in 1969-1971. Decrease in abundance was observed in blue rockfish, Sebastes mystinus, copper rockfish, Sebastes caurinus, olive rockfish, Sebastes serranoides , kelp greenling, Hexagrammos decagrammus, lingocd, Ophiodon elogatus, kelp bass, Paralabrax chathratus, opaleye, Girella nigricans, black surfperch, Embiotoca jacksoni, kelp surfperch, Brachyistius frenatus, pile surfperch, Damalichthys vacca, rainbow surfperch, Hypsurus caryi, rubberlip surfperch, Rhacochilus toxotes, sharpnose surfperch, Phanerodon atripes, striped surfperch, Embiotoca lateralis, and senorita, Oxyjulis californica. An increase in abundance was seen in black-and-yellow rockfish, Sebastes chrysomelas, kelp rockfish, Sebastes atrovirens, and cabezon, Scorpaenichthys marmoratus.
Species encountered in 1996 but absent in the previous study were treefish, Sebastes serriceps, thornback, Platyrhinoidis triseriata, tubesnout, Aulorhynchus flavidus, snubnose sculpin, Orthonopias triacis, corraline sculpin, Artedius corallinus, and California halibut, Paralichtys californicus. Two of the newly observed species, treefish and snubnose sculpin, are southerly distributed species that may have displayed a northward shift in distribution.