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Species richness of cyanobacteria, d...

University of Puerto Rico, Mayaguez (Puerto Rico).

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Species richness of cyanobacteria, diatoms, and ciliates in microbial mats of the Cabo Rojo salterns, Puerto Rico.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Species richness of cyanobacteria, diatoms, and ciliates in microbial mats of the Cabo Rojo salterns, Puerto Rico./
作者:	Colon Ortiz, Lourdes.
面頁冊數:	178 p.
附註:	Adviser: Carlos J. Santos Flores.
Contained By:	Masters Abstracts International47-02.
標題:	Biology, Microbiology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1458819
ISBN:	9780549802365

Species richness of cyanobacteria, diatoms, and ciliates in microbial mats of the Cabo Rojo salterns, Puerto Rico.
Colon Ortiz, Lourdes.

Species richness of cyanobacteria, diatoms, and ciliates in microbial mats of the Cabo Rojo salterns, Puerto Rico. - 178 p.

Adviser: Carlos J. Santos Flores.

Thesis (M.S.)--University of Puerto Rico, Mayaguez (Puerto Rico), 2009.

Seasonal rains and the inflowof seawater into the Cabo Rojo salterns, Puerto Rico, induce changes in the concentration of dissolved salts. These environmental variations should have an effect in the composition and species richness of the microbial mats in these salterns. The purpose of this study was to analyze the changes in the richness of cyanobacteria when a decrease in salinity occurs. Three stations were selected and three aquaria without bottoms were set per station. Treatments of sterilized seawater, distilled water, and a control with ambient water from the same station were maintained in situ. Samples were analyzed after 24 and 72 hours and the procedure was repeated at different hydroperiods. The treatments showed no differences in the composition of the mat. Nevertheless, for the hydroperiod that comprised the dry season with high levels of seawater, there was a shift from the dominant filamentous cyanobacteria to the coccoid ones when the salinity decreased below 20 ppt. In general, 12 species of cyanobacteria were identified with Microcoleus chtonoplastes the most abundant, followed by the coccoid, Aphanothece granulosa. Diatoms and ciliates were also characterized. Nineteen species of diatoms were identified, where the most abundant were Nitzschia lanceolata, Navicula spp., and Mastogloia braunii. The most frequent ciliates were Fabrea (F. salina) and Nassula sp.

ISBN: 9780549802365Subjects--Topical Terms:

1017734
Biology, Microbiology.

Species richness of cyanobacteria, diatoms, and ciliates in microbial mats of the Cabo Rojo salterns, Puerto Rico.
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