La contaminación por plásticos en ambientes marinos y costeros ha sido ampliamente reconocida como una problemática ambiental que sigue en crecimiento. Las partículas de plásticos generadas principalmente por la degradación de restos de plásticos de mayor tamaño han sido denominados microplásticos (<5 mm), los cuales han sido ampliamente estudiados en regiones de Asia y Europa, sin embargo existen escasos estudios en Sudamérica, sobre todo en la costa del Pacífico y puntualmente en Perú. Debido a la importancia de determinar la presencia de estos contaminantes sobre todo en regiones costeras, las cuales se reportan como ambientes altamente impactados por estos, se realiza esta investigación la cual analiza la presencia de microplásticos dentro una serie de playas arenosas en las costas de la provincia de Islay (Arequipa-Perú). Para ello se analizó la concentración de est...

En el presente trabajo se estudió la macrofauna (> 1 mm) bentónica intermareal de dos playas arenosas adyacentes al estuario del río Tambo, situadas en la localidad de Catas, Punta de Bombón, (provincia de Islay, Arequipa, Perú) entre octubre del 2014 y junio del 2015. Se establecieron 6 sitios de muestreo con 3 transectos perpendiculares al límite superior e inferior del intermareal. Se propuso (i) evaluar las variaciones en la riqueza y abundancia de la macrofauna entre los sitios, playas y temporadas, y (ii) determinar si las variaciones en la riqueza y abundancia macrofaunal responden a factores ambientales como composición granulométrica, salinidad, temperatura y pH. Se recolectó un total de 4244 individuos macrofaunales pertenecientes a 5 especies y 2 grupos taxonómicos (Polychaeta y Crustacea). Los crustáceos fueron el grupo más abundante, siendo Emerita análoga la es...

High Andean wetlands are important ecosystems due to their ecosystem services. Carbon storage is a result of the low decomposition rate due to flooded soils and low temperatures. The carbon content stored in the high Andean wetland of Chalhuanca (Arequipa) was estimated and the value of this service was calculated. For this purpose, 30 samples were taken at random, establishing three carbon pools: aboveground biomass (leaves and stems), belowground biomass (roots) and organic soil. The samples were obtained with an auger-type device; each sample was dried at 65°C for at least 24 hours and the carbon content was determined using the Walkey-Black method and calculations and statistical tests were performed. The total carbon stored in relation to the area of the wetland was approximately 795,415.65 tons of CO2. The fraction of carbon per sample is higher in aerial biomass (49%), followed b...

High Andean wetlands are important ecosystems due to their ecosystem services. Carbon storage is a result of the low decomposition rate due to flooded soils and low temperatures. The carbon content stored in the high Andean wetland of Chalhuanca (Arequipa) was estimated and the value of this service was calculated. For this purpose, 30 samples were taken at random, establishing three carbon pools: aboveground biomass (leaves and stems), belowground biomass (roots) and organic soil. The samples were obtained with an auger-type device; each sample was dried at 65°C for at least 24 hours and the carbon content was determined using the Walkey-Black method and calculations and statistical tests were performed. The total carbon stored in relation to the area of the wetland was approximately 795,415.65 tons of CO2. The fraction of carbon per sample is higher in aerial biomass (49%), followed b...

High Andean wetlands are important ecosystems due to their ecosystem services. Carbon storage is a result of the low decomposition rate due to flooded soils and low temperatures. The carbon content stored in the high Andean wetland of Chalhuanca (Arequipa) was estimated and the value of this service was calculated. For this purpose, 30 samples were taken at random, establishing three carbon pools: aboveground biomass (leaves and stems), belowground biomass (roots) and organic soil. The samples were obtained with an auger-type device; each sample was dried at 65°C for at least 24 hours and the carbon content was determined using the Walkey-Black method and calculations and statistical tests were performed. The total carbon stored in relation to the area of the wetland was approximately 795,415.65 tons of CO2. The fraction of carbon per sample is higher in aerial biomass (49%), followed b...