Flora do Rio de Janeiro: Ceratophyllaceae
Resumo O presente estudo tem como objetivo contribuir para o conhecimento das espécies de Ceratophyllaceae ocorrentes no estado do Rio de Janeiro. O trabalho tem por base a análise morfológica de materiais depositados em herbários e coletas de campo ...
Aline de Jesus Correia +1 more
doaj +1 more source
Studies on energy transformation in the freshwater snail Pila globosa 1. Influence of feeding rate [PDF]
The effects of eleven chosen feeding levels ranging from 0 to 198 mg damp dry (plant) Ceratophyllumlg live snail /day on the absorption, conversion and metabolism of the snail Pi/a globosa (of 1•9 g body weight) have been studied.
Haniffa, M A +3 more
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Zoocoenological state of microhabitats and its seasonal dynamics in an aquatic macroinvertebrate assembly (Hydrobiological case studies on lake Balaton, No. 1.) [PDF]
In the years 2002, 2003 and 2004 we collected samples of macroinvertebrates on a total of 36 occasions in Badacsony bay, in areas of open water (in the years 2003 and 2004 reed-grassy) as well as populated by reed (Phragmites australis) and cattail ...
Gaál, Márta +2 more
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Comparative study of hatching rates of African catfish (Clarias gariepinus Burchell 1822) eggs on different substrates [PDF]
The hatching rates of African catfish (Clarias gariepinus) eggs on four natural substrates: the roots of Nile cabbage (Pistia stratiotes), water hyacinth (Eichhornia crassipes), pond weed (Ceratophyllum dermasum) and green grass leaves (Commelina sp ...
Macharia, S.K., Ngugi, C.C., Rasowo, J.
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Gravierende Veränderungen in der submersen Makrophytenvegetation der Alten Fahrt bei Senden in Westfalen [PDF]
Die Makrophytenvegetation eines stillgelegten Kanalabschnittes ("Alte Fahrt") bei Senden in Westfalen hat sich seit Beginn der 90er Jahre drastisch verändert.
Wittig, Rüdiger
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Seasonal Biomass and Carbohydrate Allocation Patterns in Southern Minnesota Curlyleaf Pondweed Populations [PDF]
Four southern Minnesota populations of curlyleaf pondweed ( Potamogeton crispus L.) were sampled monthly from January 2001 to November 2002 to determine seasonal phenological, biomass, and carbohydrate allocation patterns.
Madsen, John D., Woolf, Thomas E.
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Biology and potential impacts of rudd (Scardinius erythrophthalmus L.) in New Zealand [PDF]
Rudd (Scardinius erythrophthalmus) is a cyprinid fish native to Europe that was illegally introduced into New Zealand in 1967. Between the 1960s and 1980s rudd were illegally spread to a number of lakes, ponds, and rivers in New Zealand, principally ...
Hicks, Brendan J.
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Роголистники (Ceratophyllum, Ceratophyllaceae) Саратовской области
Data on distribution Ceratophyllum in the Saratov region and a key for definition ...
openaire +1 more source
What cooling pond sediments can reveal about 14C in nuclear power plant liquid effluents: Case study Lake Drūkšiai, Ignalina nuclear power plant cooling pond. [PDF]
Barisevičiūtė R +9 more
europepmc +1 more source
The first part of a general survey of the vegetation of Catalonia and Andorra, this paper reports all the phytocoenological associations and subassociations recorded in this area.
Carreras i Raurell, Jordi +3 more
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