Benthic microalgae community response to flooding in a tropical salt flat
2016 (English)In: Brazilian Journal of Biology, ISSN 1519-6984, E-ISSN 1678-4375, Vol. 76, no 3, 577-582 p.Article in journal (Refereed) PublishedText
This research evaluated the effect of flooding on the microphytobenthos community structure in a microbial mat from a tropical salt flat. Field samples were collected during four consecutive days: on the first three days the salt flat was dry, on the fourth day it was flooded by rain. In order to evaluate the community maintained in flood conditions, samples from this area were collected and kept in the laboratory for 10 days with sea water. The results of total abundance of microphytobenthos varied from 4.2 x 10(8) to 2.9 x 10(9) organisms L-1, total density increased one order of magnitude under the effect of water for both situations of precipitation in the salt flat and in experimental conditions, an increase due to the high abundance of Microcoleus spp. Shannon index (H) was higher during the desiccation period. Our data suggest that changes in the abundance of organisms were due to the effect of water. The dominance of the most abundant taxa remained the same under conditions of desiccation and influence of water, and there is probably a consortium of microorganisms in the microbial mat that helps to maintain these dominances.
Place, publisher, year, edition, pages
INT INST ECOLOGY , 2016. Vol. 76, no 3, 577-582 p.
microphytobenthos; cyanobacteria; Microcoleus spp.; hypersaline environment
Oceanography, Hydrology, Water Resources
IdentifiersURN: urn:nbn:se:liu:diva-130415DOI: 10.1590/1519-6984.18314ISI: 000378893100003PubMedID: 27097089OAI: oai:DiVA.org:liu-130415DiVA: diva2:952652
Funding Agencies|Brazilian National Council of Technological and Scientific Development (INCT-MAR-COI); CNPq; Brazilian Federal Agency for Support and Evaluation of Graduate Education (Capes)2016-08-152016-08-052016-09-08