Spatial and temporal variation of phytoplankton diversity and abundance of Lake Yojoa in a hydrological year 2014-2015

Authors

  • Alba Isbela Hernández Oviedo Beneficiaria de una beca sustantiva de la DICYP. Profesoras de la Escuela de Biología, Facultad de Ciencias, UNAH
  • Mirna Marin Beneficiaria de una beca sustantiva de la DICYP. Profesoras de la Escuela de Biología, Facultad de Ciencias, UNAH
  • Lourdes Henriquez Beneficiaria de una beca sustantiva de la DICYP. Profesora del Instituto de Investigaciones en Microbiologia, Facultad de Ciencias, UNAH
  • Marcela Garay Beneficiaria de una beca sustantiva de la DICYP. Profesora del Centro Universitario Regional del Litoral Atlántico (CURLA UNAH)

DOI:

https://doi.org/10.5377/rct.v0i19.4274

Keywords:

Phytoplankton variation, diversity, abundance, spatial dominance, temporal dominance phytoplankton, algal bloom, Yojoa lake

Abstract

The phytoplankton of Lake Yojoa was represented by 81 species: 59% Cyanophyceae, 22% Chlorophyceae, 9% Bacillariophyceae, 4% Zignematophyceae, 3% Euglenophyceae, 2% Trebouxiophyceae and 1% Dinophyceae.

The beta phytoplankton diversity of Lake Yojoa is relatively high regardless of sampling site and time. The highest specific wealth corresponded to the station in front of the Brisas del Lago Hotel and the lowest to index point. Temporally, the greatest specific richness was in July 2014 and the lowest in January 2015, dominating: Microcystis aeruginosa, Aphanocapsa delicatissima, Aphanocapsa elachista, Oscillatoria limosa, Staurastrum leptocladum, Pseudoanabaena mucícola and Sphaerocystis schroeteri. Spatially, the highest index of dominance corresponded to Quebrada Cianuro and the lowest to Index Point. Temporally, the highest index of dominance was in July 2014 and the lowest in September and November 2014. Spatially, the greatest similarity was found between Puntilla and Cacao and Point Index, and the lowest between the mouth of the Varsovia River and the Quebrada Cianuro mouth. Temporally, the greatest similarity was during and at the end of the dry season 2015, and the lowest between July 2014 and the dry season 2015.

The average abundance was higher in May 2014 with 58,616 (Cel / ml), coinciding with the end of an algal bloom event, however, declined progressively during the study. During the first sampling, a greenish-brown superficial cream corresponding to filamentous algae (Oscillatoria limosa and Lyngbya) was observed in decomposition. The marked seasonality of phytoplankton and environmental conditions are the determinants of differences in diversity and abundance found in Lake Yojoa.

Revista Ciencia y Tecnología No.19, diciembre 2016, p.40-77

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Published

2017-06-11

How to Cite

Hernández Oviedo, A. I., Marin, M., Henriquez, L. and Garay, M. (2017) “Spatial and temporal variation of phytoplankton diversity and abundance of Lake Yojoa in a hydrological year 2014-2015”, Jornual of Science and Technology, (19), pp. 40–77. doi: 10.5377/rct.v0i19.4274.

Issue

Number 19, December 2016

Section

Life Sciences and Health

License

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