The Importance of Pinnacles and Seamounts to Pelagic Fishes and Fisheries off the Southern Baja California Peninsula

John E. Richert, Salvador J. Jorgensen, James T. Ketchum, Laleh Mohajerani, and A. Peter Klimley

Oceanography and Fisheries Open Access Journal 2017; 4(2): 555644

 

DOI: 10.19080/OFOAJ.2017.04.555634

 

Abstract

 

We evaluate the importance of seamounts to pelagic fishes and fisheries in the Gulf of California by creating an inventory local seamounts, analyzing the seasonal abundance of pelagic species an inter-annual time scale at a single seamount using underwater visual census, ultrasonic telemetry and fisheries observation, and assessing the fishermen and fisheries that depend on seamount ecosystems. We arrive at an inclusive definition of seamounts and consider a seamount to be any submarine peak or ridge abruptly rising from a level sea floor. The abrupt topographic nature of these features lead to its ecological significance, as a site attracting a diversity of fishes in relatively high abundance. We describe and encourage science-based management of seamount fish assemblages and present four major areas we believe will need further study if we are to understand and better manage seamount ecosystems and their related fisheries, including causation of productivity surrounding seamounts, scales of oceanographic processes impacting seamounts, connectivity of species to seamounts and the socio-economic impact of ecosystem management on fishermen.

 

Keywords

 

Seamount, Pelagic fish, Ecology, Fisheries management, Gulf of California

 

 

Descargar PDF

DONAR

Pelagios Kakunjá A.C. 2016

contacto@pelagioskakunja.org | Créditos | Contáctanos | Política de privacidad

Pelagios Kakunjá 2016 © Todos los derechos reservados

 

Contenidos: Karina Busto

Concepto y diseño: Gabriela Jiménez | Gaviota Cuántica