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	Provedor de dados Boletín de Investigaciones (2) Autor La Cruz,Luis (2) Legua,Javier (2) Leiva-Dietz,Francisco (2) Henríquez-Pastene,Cristián (1) Ibieta,Adrián (1) Palavra-chave Fisheries (2) Peruvian anchoveta (2) Biomass (1) Echo sounder (1) Echosounders (1) Monitoring (1) Pelagic (1) Temporal series (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2026 (1) 2025 (1) País Colombia (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Intercalibration of scientific echosounders (EK60 and EK80) for the multiplatform acoustic assessment of anchoveta in Chile Boletín de Investigaciones La Cruz,Luis; Legua,Javier; Leiva-Dietz,Francisco. ABSTRACT Hydroacoustic surveys are key for assessing pelagic species such as the Peruvian anchoveta (Engraulis ringens) in the Humboldt Current System (HCS), one of Chile’s most important fisheries. Oceanographic variability influences environmental conditions and resource distribution, particularly in coastal areas. However, a coverage gap persists in nearshore zones due to operational limitations of the research vessel, which restricts the spatial representativeness of routine hydroacoustic assessments. To address this gap, artisanal purse-seine vessels equipped with EK80 echosounders have been incorporated, allowing operations in areas less accessible to the main research vessel. This study evaluated the comparability and accuracy of acoustic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fisheries; Peruvian anchoveta; Echosounders; Temporal series; Biomass. Ano: 2026 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612026000100108 Length estimation of anchovy (Engraulis ringens) using echosounder in difficult to access fishing areas in the Atacama Region, Chile Boletín de Investigaciones La Cruz,Luis; Legua,Javier; Ibieta,Adrián; Henríquez-Pastene,Cristián; Leiva-Dietz,Francisco. ABSTRACT This study explores the use of hydroacoustic methods to estimate the size distribution of Peruvian anchoveta, offering an alternative to traditional biological sampling methods. Acoustic data were collected using two algorithms: Single Target and Tracked Target, along with a TS to length conversion model specific to Peruvian anchoveta. The results showed that the Single Target algorithm estimated sizes ranging from 8.5 to 16 cm, with a mode of 12.0 cm, while the Tracked Target algorithm identified a range of 9 to 14 cm, with a mode of 11.5 cm. Juvenile anchovies represented 45.8% and 51.2% of the population in each algorithm, respectively. Additionally, the depth of the echoes ranged from 3.92 to 43.95 m, suggesting that larger Peruvian anchoveta... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pelagic; Peruvian anchoveta; Fisheries; Monitoring; Echo sounder. Ano: 2025 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612025000200070 Registros recuperados: 2 Primeira ... 1 ... Última

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