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Resumen:
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Se presentan los resultados de la delimitación y caracterización de bancos naturales entre Punta Literas y Playa Grande (La Choza) en el litoral de las provincias de Barranca y Huaura, se desarrollaron trabajos por mar y orilla de playa. Se colectaron muestras de 137 estaciones del 17 al 31 de octubre de Punta Literas a Punta Carquín y, 175 estaciones entre el 13 y 30 de noviembre 2022, de Punta Carquín a Playa Grande (La Choza). Se registró temperatura del mar, oxígeno disuelto, salinidad, nutrientes, dirección y velocidad de corrientes. En la primera etapa se identificaron y delimitaron 17 bancos naturales de recursos bentónicos de fondo rocoso y cinco de bajos rocosos y arena; en la segunda etapa, 43 bancos naturales de fondo rocoso, dos de sustrato arenoso y cinco constituidos por bajos rocosos y arena. Se identificaron 12 especies de invertebrados comerciales destacando por mayor distribución Thaisella chocolata “caracol negro”, Platyxanthus orbignyi, “cangrejo violáceo” Romaleon setosum “cangrejo peludo”, Patallus mollis “ancoco negro”, Emerita analoga “muy muy”. En el litoral de Punta Literas - Playa Grande (La Choza) e islas e islotes del grupo Huaura se identificaron bancos de especies importantes de invertebrados: T. chocolata “caracol negro”, P. orbignyi “cangrejo violáceo”, P. mollis “ancoco negro”, Ensis loboi “concha navaja” y en el litoral Barranca y Huaura a Macrocystis pyrifera “alga parda”. Se registraron valores promedios de temperatura superficial de 15,2 °C, oxígeno 3,65 mL/L y salinidad 34,906.
ABSTRACT: This study presents the results of the delimitation and characterization of natural banks located between Punta Literas and Playa Grande (La Choza), along the coastal provinces of Barranca and Huaura. Fieldwork was conducted both offshore and along the shoreline. A total of 137 sampling stations were surveyed between October 17 and 31 from Punta Literas to Punta Carquín, and 175 stations between November 13 and 30, 2022, from Punta Carquín to Playa Grande (La Choza). Environmental parameters recorded included sea surface temperature, dissolved oxygen, salinity, nutrient concentrations, and current direction and velocity. During the first phase of the study, 17 natural banks with rocky bottom benthic resources were identified and mapped, along with five additional banks consisting of mixed rocky and sandy bottoms. In the second phase, 43 rocky-bottom banks, two sandy-bottom banks, and five mixed-bottom banks (rock and sand) were delimited. Twelve species of commercially important invertebrates were recorded. The most widely distributed were Thaisella chocolata, Platyxanthus orbignyi, Romaleon setosum, Patallus mollis, and Emerita analoga. Significant invertebrate banks of T. chocolata, P. orbignyi, P. mollis, and Ensis loboi were found along the coastline between Punta Literas and Playa Grande, as well as on the islands and islets of the Huaura archipelago. In the coastal waters of Barranca and Huaura, extensive beds of Macrocystis pyrifera were also observed. The average environmental values recorded in the study area were 15.2 °C for sea surface temperature, 3.65 mL/L for dissolved oxygen, and 34.906 for salinity.
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