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Marra,Raquel Cristina; Tremarin,Priscila Izabel; Algarte,Vanessa Majewski; Ludwig,Thelma Veiga. |
Abstract We conducted a taxonomical study of epiphytic diatoms on the macrophytes Polygonum hydropiperoides, Ludwigia peruviana and Alternanthera philoxeroides collected in the mesotrophic reservoir Piraquara II flooded in 2009, located in the state of Paraná. A total of 135 infrageneric taxa were identified, among them five at generic level and other five are first records to the state. We provided illustration, valve metrics, meristics limits and taxonomic reference for each taxon. Also, life forms and species frequency are given. The most frequent diatoms totalized 15.3% of total identified taxa and sporadic species represented 54.7%. Achnanthidium minutissimum (Kützing) Czarnecki and Brachysira neoexilis Lange-Bertalot occurred in more than 90% of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillariophyta; Freshwater; Macrophytes; Mesotrophic; Periphyton; Taxonomy. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000400303 |
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Tremarin,Priscila Izabel; Freire,Eduardo Gomes; Algarte,Vanessa Majewski; Ludwig,Thelma Veiga. |
Acanthoceras Honigmann and Urosolenia Round & Crawford emend. Rott, Kling & McGregor species were studied based on samples of 19 hydroelectric power plants reservoirs located in the State of Paraná, Southern Brazil. Autoecological informations of Urosolenia species complement the study. One Acanthoceras and four Urosolenia species were identified: A. zachariasii (Brun) Simonsen, U. amazonica Sala, Núãez-Avellaneda & Vouilloud, U. eriensis var. morsa (West & G.S.West) Bukhtiyarova, U. longiseta Zacharias and U. obesa Freire, Tremarin & Ludwig. Morphological variation of frustules was described and illustrated by optical and scanning electron microscopy, and compared with similar species such as U. delicatissima Sala, Núãez-Avellaneda... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Centric diatom; Lentic environments; State of Paraná; Taxonomy. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000100102 |
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