Icti��logos de la Argentina: José Gustavo Haro

This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina. The general plan of this work consists of individual factsheets containing a list of works by each author, along with reference bibliography and, whenever possible, personal pictures and additional material. The datasheets will be published primarily in chronological order, although this is subject to change by the availability of materials for successive editions. This work represents another approach for the recovery and revalorization of those who set the foundations of Argentine ichthyology while in diverse historical circumstances. I expect this to be the beginning of a major work that achieves the description of such a significant part of the history of natural sciences in Argentina.

Age and length composition of Columbia Basin chinook, sockeye, and coho salmon at Bonneville Dam in 2002

In 2002, representative samples of migrating Columbia Basin chinook (Oncorhynchus tshawytscha), sockeye (O. nerka), and coho salmon (O. kisutch) adult populations were collected at Bonneville Dam. Fish were trapped, anesthetized, sampled for scales and biological data, revived, and then released. Scales were examined to estimate age composition; the results contributed to an ongoing database for age class structure of Columbia Basin salmon populations. Based on scale analysis of chinook salmon, four-year-old fish (from brood year [BY] 1998) comprised 86% of the spring chinook, 51% of the summer chinook, and 51% of the bright fall chinook salmon population. Five-year-old fish (BY 1997) comprised 13% of the spring chinook, 43% of the summer chinook, and 11% of the bright fall chinook salmon population. The sockeye salmon population at Bonneville was predominantly five-year-old fish (55%), with 40% returning as four-year-olds in 2002. For the coho salmon population, 88% of the population was three-year-old fish of age class 1.1, while 12% were age class 1.0. Length analysis of the 2002 returns indicated that chinook salmon with a stream-type life history are larger (mean length) at age than the chinook salmon with an ocean-type life history. Trends in mean length over the sampling period for returning 2002 chinook salmon were analyzed. Chinook salmon of age classes 1.2 and 1.3 show a significant increase in mean length over the duration of the migration. A year class regression over the past 14 years of data was used to predict spring, summer, and bright fall chinook salmon population sizes for 2003. Based on three-year-old returns, the relationship predicts four-year-old returns of 54,200 (�� 66,600, 90% predictive interval [PI]) spring chinook, 23,800 (�� 19,100, 90% PI) summer, and 169,100 (�� 139,500, 90% PI) bright fall chinook salmon for the 2003 runs. Based on four-year-old returns, the relationship predicts five-year-old returns of 36,300 (�� 35,400, 90% PI) spring, 63,800 (�� 10,300, 90% PI) summer, and 91,100 (�� 69,400, 90% PI) bright fall chinook salmon for the 2003 runs. The 2003 run size predictions should be used with caution; some of these predictions are well beyond the range of previously observed data.

Co-oscillation of a fjord basin���s circulation with decade-long oceanographic, hydrologic, and climatic regimes: Puget Sound 1916-'87 [abstract]

EXTRACT (SEE PDF FOR FULL ABSTRACT): Oceanographic, hydrologic, and climatic data collected during 1916-'87 in Puget Sound's Main Basin (~200 m x 5 km x 100 km) and approaches oscillate at low frequency between two regimes (I, II). The oscillation accounts for a large fraction of the interannual variability (41-75%) and the zero crossings between regimes span approximately a decade. ... The transition between regimes is accompanied by substantial changes in the horizontal pressure and density fields between the Pacific coast and the mixing zones leading to the Basin, as well as within the Basin itself.

Semblanzas Ictiol��gicas: Juan José Rosso

A trav��s de esta serie intentaremos conocer diferentes facetas personales de los integrantes de nuestra ���comunidad���. El cuestionario, adem��s de su principal objetivo, con sus respuestas quiz��s nos ayude a encontrar entre nosotros puntos en com��n que vayan m��s all�� de nuestros temas de trabajo y sea un aporte a futuros estudios hist��ricos. Esperamos que esta iniciativa pueda ser otro nexo entre los icti��logos de la regi��n, ya que consideramos que el resultado general trascender��a nuestras fronteras.

Highly migratory shark fisheries research by the National Shark Research Consortium (NSRC), 2002-2007

The National Shark Research Consortium (NSRC) includes the Center for Shark Research at Mote Marine Laboratory, the Pacific Shark Research Center at Moss Landing Marine Laboratories, the Shark Research Program at the Virginia Institute of Marine Science, and the Florida Program for Shark Research at the University of Florida. The consortium objectives include shark-related research in the Gulf of Mexico and along the Atlantic and Pacific coasts of the U.S., education and scientific cooperation.

Semblanzas Ictiol��gicas: José Ignacio Fernandino

A trav��s de esta serie intentaremos conocer diferentes facetas personales de los integrantes de nuestra ���comunidad���. El cuestionario, adem��s de su principal objetivo, con sus respuestas quiz��s nos ayude a encontrar entre nosotros puntos en com��n que vayan m��s all�� de nuestros temas de trabajo y sea un aporte a futuros estudios hist��ricos. Esperamos que esta iniciativa pueda ser otro nexo entre los icti��logos de la regi��n, ya que consideramos que el resultado general trascender��a nuestras fronteras.

Semblanzas Ictiol��gicas Iberoamericanas: Antonio José Machado-Allison

A trav��s de esta nueva serie tratamos de conocer diferentes aspectos personales de los integrantes de la comunidad ictiol��gica iberoamericana. Esta iniciativa, comparte el esp��ritu y objetivo de las semblanzas nacionales buscando informalmente, otro punto de uni��n en la ���comunidad de icti��logos iberoamericanos���. Quiz��s est�� equivocado en mi apreciaci��n, pero creo que vale la pena este intento, ya que, con la colaboraci��n generosa e insoslayable de los integrantes de este ���universo���, se��alaremos un registro en el tiempo de la Ictiolog��a Neotropical.