Repositorio Digital Marítimo, Fluvial y Costero

Cañón Páez, Mary Luz and Santamaría del Ángel, Eduardo. (2021). Identification of phytoplankton blooms in the Gerlache Strait, West Antarctic Peninsua. Boletín de Investigaciones Marinas y Costeras. pp. 13-30.

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Abstract

In order to identify phytoplankton blooms, the inherent optical properties index (IOP) was used in surface water samples and the maximum chlorophyll-a (MPC) that were taken in the Third (Januaty 2017) and in the Fourth Expedition (January 2018) from Colombia to Antarctica en the Gerlache Strait (EG). The IOP is calculated from the standardized spatial anomalies of the phytoplankton, detritus and colored dissolved organic matter (CDOM) absorption coefficients using wavelength 443. In addition, the phytoplankton size index was calculated using the Blue / Red ratio and this related to the IOP to determine the size structure of the phytoplankton responsible for the blooms. In 2017, four stations were identified under bloom condition, where two were superficial blooms and two subsurface bloom; to three in conditions of decrease of the bloom and to twelve in conditions of non-bloom, with a structure of diverse size where populations of bloom and the other subsurface bloom; to two in conditions of decrease in bloom and nine in conditions of non-bloom, the size structure that dominated the blooms was microphytoplankton. With the IOP subsurface bloom conditions were observed in voyh expeditions, also proving their effectiveness for blooms generated by natural or seasonal conditions at different depths of the water column.

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Item Type:	Article
Uncontrolled Keywords:	Coeficientes de absorción. Índice Bio-optico de florecimiento fitoplactónicos. Índice de tamaño. Fitoplancton
Geographical coverage :	Antártica. Estrecho de Gerlache
Depositing User:	Dirección General Marítima
ISSN:	2590-4671
Official URL:	http://boletin.invemar.org.co:8085/ojs/index.php/b...

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