Document Detail
The phytoplankton structure of Merin Lagoon: a Subtropical World Biosphere Reserve System (Brasil–Uruguay)
Abstract/OtherAbstract :
The phytoplankton composition and abundance in the large, subtropical coastal Merin Lagoon (Brazil-Uruguay) were analyzed seasonally between 1998 and 1999, based on plankton net and bottle samples in 38 stations. The lagoon is connected to the choked Patos Lagoon forming a complex ecosystem with a drainage basin of 201626 km2. Temperature and conductivity presented similar seasonal trends, with lower values (mean 15 °C and 70 µS cm–1, respectively) in austral winter (July–August 1998) and higher (mean 25 °C and 105 µS cm–1, respectively) in summer (January 1999).Atotal of one hundred and fifty three microalgae belonging to 8 classes were identified in the lagoon. Most species belong to the genera Staurastrum (8 species). and Scenedesmus (6 species). The species of genera such as Aulacoseira (Bacillariophyceae), Cryptomonas (Cryptophyceae), Monoraphidium (Chlorophyceae) and Planktolyngbya (Cyanobacteria) were present throughout the year. Diatoms predominated in spring and shared dominance with Cyanobacteria in summer and autumn. In winter, Chlorophyceae and Cryptophyceae dominated in the community. Phytoplankton spatial variability and abundance reached their maximum in March’98 (autumn) with 3600 ind mL–1, while in November (spring) relatively low abundances were found in the lagoon (average 1126 cells mL–1). The abundant phytoplankters were Planktolyngbya limnetica (943 cells mL–1), Aulacoseira (1874 cells mL–1), Staurosira construens (847 cells mL–1) and an unidentified unicellular volvocalean (1066 cells mL–1).
Authors :
Pérez, M.-C., Odebrecht, C.
Related Documents :
11037958 - The proportion of circulating γδ t cells increases after the first week of onset of t...
32735788 - Direct somatic embryogenesis in roots of cichorium: is callose an early marker?
10279408 - Pyrimidine metabolism in lemna minor: ii. specific inhibition of plastid replication in...
10304518 - Water transport properties of cortical cells in roots of nitrogen- and phosphorus-defic...
3657258 - Coordinate free lap.
9552178 - Shifts of intracellular ph distribution as a part of the signal mechanism leading to th...
Contributors :
Publication Detail :
Publisher :  Division of Biology, Faculty of Science, University of Zagreb     Type :  text     Format :  pdf    
Date Detail :
Subject :
Phytoplankton, distribution, abundance, coastal lagoon, subtropical, Brazil, Uruguay.
Coverage :
Relation :
Source :
Acta Botanica Croatica,, Vol.64, No.2
Copyright Information :
Full-text papers can be used for personal or educational purposes only. Authors' and publisher's copyrights must be acknowledged. Annual subscription for printed issues: Individuals, institutions and companies 300 Kn (40 EUR, 50 USD). Postal giro cheque number for individuals and institutions from Croatia: Prirodoslovno-matematički fakultet, Prirodoslovni odjeli 2360000-1101522208, poziv na broj 02 1100-10, za Acta Bot. Croat. Payments from abroad: The order should be sent to Mrs. Grozdana Sirotić, Marulićev trg 20, HR-10000 Zagreb; e-mail: Payment should be made after receipt of the invoice, through bank transfer to: Faculty of Science, University of Zagreb (marked Acta Bot Croat); Bank:Zagrebacka banka, Samoborska 145, 10000 Zagreb; Bank Account: 2500-VAL-2400061954; SWIFT CODE: ZABA HR 2x; IBAN: HR5823600001101522208
Other Details :
Languages :  en    
Export Citation :
APA/MLA Format     Download EndNote     Download BibTex

Previous Document:  The wall flora of the Nebet Tepe Architectural Reserve in the city of Plovdiv (Bulgaria)
Next Document:  Pollen morphology of Bulgarian species from the section Orobus (L.) Gren. et Godr. (genus Lathyrus, ...