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Dive into the research topics where Mauricio Ortiz is active.

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Featured researches published by Mauricio Ortiz.


Reviews in Fisheries Science | 2013

The Recovery of Atlantic Swordfish: The Comparative Roles of the Regional Fisheries Management Organization and Species Biology

John D. Neilson; Freddy Arocha; Shannon Cass-Calay; Jaime Mejuto; Mauricio Ortiz; Gerry Scott; Craig Smith; Paulo Travassos; George Tserpes; Irene Andrushchenko

Regional fisheries management organizations (RFMO) are often criticized for ineffectual management of high-seas fisheries resources. However, in the case of the two Atlantic swordfish stocks occurring in the North and South Atlantic, those stocks have rebuilt to the BMSY objective of the responsible RFMO, the International Commission for the Conservation of Atlantic Tunas (ICCAT). The relative contribution of the management actions of the RFMO and biological characteristics of swordfish stocks are evaluated in relation to the recovery of the stocks. It is concluded that while swordfish have characteristics that promote stock resilience (including relatively fast growth, and spatially- and temporally-dispersed spawning), positive management actions combined with a period of relatively good recruitment were essential to achieve the rebuilt outcome. The challenges that the RFMO faces to maintain the stocks in the rebuilt condition are described, and some possible additional measures discussed.


Fisheries Research | 2004

Alternative error distribution models for standardization of catch rates of non-target species from a pelagic longline fishery: billfish species in the Venezuelan tuna longline fishery

Mauricio Ortiz; Freddy Arocha


Fisheries Research | 2012

Population structure, distribution and relative abundance of the blue shark (Prionace glauca) in the Caribbean Sea and adjacent waters of the North Atlantic

Rafael Tavares; Mauricio Ortiz; Freddy Arocha


Archive | 2010

AN UPDATED BIOMASS INDEX OF ABUNDANCE FOR NORTH ATLANTIC SWORDFISH (XIPHIAS GLADIUS), FOR THE PERIOD 1963-2008

Mauricio Ortiz; Jaime Mejuto; Stacey Paul; Kotaro Yokawa; Miguel Neves


Archive | 2006

STANDARDIZED CATCH RATES FOR WHITE MARLIN (TETRAPTURUS ALBIDUS) FROM THE VENEZUELAN ARTISANAL PELAGIC LONGLINE FISHERY OFF THE CARIBBEAN SEA AND ADJACENT AREAS: PERIOD 1992-2003

Freddy Arocha; Asdrúbal Lárez; Jesús Marcano; Alexander Bárrios; Xiomara Gutiérrez; Denise Debrot; Mauricio Ortiz


Archive | 2003

STANDARDIZED CATCH RATES FOR BLUE MARLIN (MAKAIRA NIGRICANS) AND WHITE MARLIN (TETRAPTURUS ALBIDUS) FROM THE VENEZUELAN PELAGIC LONGLINE FISHERY OFF THE CARIBBEAN SEA AND THE WESTERN CENTRAL ATLANTIC: PERIOD 1991-2004

Freddy Arocha; Mauricio Ortiz


Archive | 2001

STANDARDIZED CATCH RATES FOR YELLOWFIN TUNA (Thunnus albacares) FROM THE VENEZUELAN PELAGIC LONGLINE FISHERY OFF THE CARIBBEAN SEA AND THE WESTERN CENTRAL ATLANTIC

Freddy Arocha; Mauricio Ortiz; Luis A. Marcano


Archive | 2008

UPDATE OF STANDARDIZED CATCH RATES FOR SAILFISH (ISTIOPHORUS ALBICANS) FROM THE VENEZUELAN PELAGIC LONGLINE FISHERY OFF THE CARIBBEAN SEA AND ADJACENT AREAS: PERIOD 1991-2006

Freddy Arocha; Mauricio Ortiz; José Silva


Archive | 2002

STANDARDIZED CATCH RATES FOR SAILFISH (Istiophorus platypterus) FROM THE VENEZUELAN PELAGIC LONGLINE FISHERY OFF THE CARIBBEAN SEA AND THE WESTERN CENTRAL ATLANTIC

Freddy Arocha; Mauricio Ortiz


Archive | 2012

CATCH RATES FOR WHITE MARLIN (TETRAPTURUS ALBIDUS) FROM THE SMALL-SCALE FISHERY OFF LA GUAIRA, VENEZUELA: PERIOD 1991-2010

Freddy Arocha; Mauricio Ortiz; Alexander Bárrios; Luis A. Marcano

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Gerry Scott

United States Department of Commerce

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Shannon Cass-Calay

United States Department of Commerce

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John D. Neilson

Fisheries and Oceans Canada

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Paulo Travassos

Universidade Federal Rural de Pernambuco

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Jesús Marcano

Autonomous University of Baja California

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