scholarly journals Changes of photosynthetic characters of Vallisneria asiatica adhered by Hydrodictyon reticulatum

2007 ◽  
Vol 19 (3) ◽  
pp. 315-320
Author(s):  
LI Qaing ◽  
◽  
WANG Guoxiang ◽  
MA Ting ◽  
WANG Wenli ◽  
...  
Hoehnea ◽  
2009 ◽  
Vol 36 (4) ◽  
pp. 667-678 ◽  
Author(s):  
Stefania Biolo ◽  
Natália Silveira Siqueira ◽  
Norma Catarina Bueno

O trabalho objetivou o conhecimento taxonômico da ordem Chlorococcales (Chlorophyceae) do Rio São Francisco Falso, um dos tributários do reservatório de Itaipu, Paraná, Brasil. As amostras foram coletadas no período de julho de 2003 a junho de 2004 em cinco estações de amostragem localizadas na região litorânea do rio. O material fitoplanctônico, obtido com rede de plâncton (25 µm de malha) e passagem de frasco aberto pela superfície da água, foi imediatamente fixado em solução de Transeau. A análise qualitativa das amostras possibilitou a identificação de 21 táxons distribuídos nas famílias: Palmellaceae, Hydrodictyaceae, Botryococcaceae, Chlorellaceae, Coelastraceae e Scenedesmaceae. O gênero mais representativo foi Desmodesmus, com sete táxons do total. Hydrodictyon reticulatum (L.) Lagerheim e Coelastrum astroideum De Notaris var. astroideum são citadas pela primeira vez para o Estado do Paraná.


1970 ◽  
Vol 14 (1) ◽  
pp. 13-24 ◽  
Author(s):  
Gautam Mukhopadhyay ◽  
Sourav Sengupta ◽  
Anjana Dewanji

Occurrence, coverage and chemical constituents of aquatic flora were studied in two Indian ponds over a period of 39-month in order to gain an insight into their associations and infestation for implications in conservation and management. Species diversity was recorded in presence of two invasive species (Alternanthera philoxeroides (Martius) Griseb. and Lemna aequinoctialis Welwitsch). These species should be managed in view of their beneficial uses. Nymphaea pubescens Willd, a threatened species, was recorded. Positive association of Nymphoides hydrophylla (Loureiro) O. Kuntze with Alternanthera philoxeroides and Vallisneria spiralis L. showed that spatially separated habitats are useful for conservation. Azolla pinnata R. Brown, an useful species and Rotala rotundifolia (F. Hamilton ex Roxburgh) Koehne, an uncommon species, were able to produce high coverage in their brief occurrence - important for their conservation. Similar feature as observed in Cladophora glomerata (L.) Kütz and Hydrodictyon reticulatum (L.) Lagerh. is useful for management of these species due to their negative impacts. Key words: Aquatic flora, Species composition, Occurrence, Coverage, Nitrogen, Phosphorus, Management DOI: 10.3329/bjpt.v14i1.519 Bangladesh J. Plant Taxon. 14(1): 13-24, 2007 (June)


2017 ◽  
Vol 77 ◽  
pp. 185-193 ◽  
Author(s):  
Jangwoo Lee ◽  
Kwanyong Lee ◽  
Hyun Min Jang ◽  
Jinkyoung Shin ◽  
Ki Young Park ◽  
...  

1980 ◽  
Vol 97 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Renata Rybová ◽  
K. Janáček ◽  
Marie Kleinová-Slavíková

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