Studies on the population biology of water lettuce: Pistia stratiotes L.

Hydrobiologia ◽  
1984 ◽  
Vol 119 (1) ◽  
pp. 15-19 ◽  
Author(s):  
P. N. Rao ◽  
A. Sambi Reddy
Keyword(s):  
Population Biology ◽  
Pistia Stratiotes ◽  
Water Lettuce

scholarly journals First Attempt at and Early Results on the Biological Control of Pistia stratiotes L. in South Africa

Koedoe ◽  
1987 ◽  
Vol 30 (1) ◽  
Author(s):  
Catharina J. Cilliers
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Pistia Stratiotes ◽  
Water Lettuce ◽  
Early Results ◽  
The Republic

Although Pistia stratiotes L. (water lettuce) is not an important weed in the Republic of South Africa, the host-specific weevil Neohydronomus pulchellus Hustache was imported for the biological control of this weed. The weevil was released onto a dense infestation of P. stratiotes of several years standing on a pan in the Pafuri area in December 1985. By September 1986 the weevils had already destroyed most of the weed and in October 1986 the weed was under biological control at this site.

Biosorption of Toxic Metals by Water Lettuce (Pistia stratiotes) Biomass

2017 ◽  
Vol 228 (4) ◽  
Author(s):  
Ana Carolina Dornelas Rodrigues ◽  
Nelson Moura Brasil do Amaral Sobrinho ◽  
Fabiana Soares dos Santos ◽  
André Marques dos Santos ◽  
Ana Carolina Callegario Pereira ◽  
...  
Keyword(s):  
Toxic Metals ◽  
Pistia Stratiotes ◽  
Water Lettuce

Phytoremediation of Parboiled Rice Mill Wastewater Using Water Lettuce (Pistia Stratiotes)

2014 ◽  
Vol 17 (7) ◽  
pp. 651-656 ◽  
Author(s):  
Bidisha Mukherjee ◽  
Madhurina Majumdar ◽  
Amitava Gangopadhyay ◽  
Sankar Chakraborty ◽  
Debashish Chaterjee
Keyword(s):  
Pistia Stratiotes ◽  
Water Lettuce ◽  
Parboiled Rice ◽  
Rice Mill Wastewater

scholarly journals Alien water lettuce (Pistia stratiotes L.) outcompeted native macrophytes and altered the ecological conditions of a Sava oxbow lake (SE Slovenia)

2020 ◽  
Vol 79 (1) ◽  
pp. 35-42
Author(s):  
Martina Jaklič ◽  
Špela Koren ◽  
Nejc Jogan
Keyword(s):  
Invasive Species ◽  
Thermal Water ◽  
First Record ◽  
Pistia Stratiotes ◽  
Oxbow Lake ◽  
Water Lettuce ◽  
Viable Seed ◽  
Stepping Stones ◽  
Macrophyte Species ◽  
Water Ecosystems

Introduction of an invasive alien macrophyte water lettuce (Pistia stratiotes L.) radically changed the oxbow lake in Prilipe (SE Slovenia) which has thermal springs that enables the winter survival of this tropical invader. About 10 years after the first record of P. stratiotes, the number, abundance and biomass of indigenous and non-indigenous macrophytes as well as different abiotic parameters were measured. In that period, colonized sections (~94% of the oxbow lake) were completely covered with water lettuce, and the only reservoirs of indigenous macrophyte species were the non-colonized areas (6%). Research in 2011 found only a third of the previously recorded indigenous macrophytes, but then only in small section without P. stratiotes. Three of the species that disappeared were on the Red data list. In the colonized section a higher biomass was observed than in the non-colonized section because of high abundance of water lettuce which remained the only macrophyte. Due to the presence of P. stratiotes, the intensity of light penetrating into the depth and water circulation were reduced, as was the oxygen saturation of the water. In addition to the well documented vegetative propagation of P. stratiotes, a well-established and viable seed bank has been detected in the lake sediment and after winter floods also on lake banks. In the future, special attention should be given to the thermal water ecosystems in temperate climates since they can serve as stepping stones and recruitment centres for the establishment and spread of (sub-)tropical invasive species. Facing predicted climate change such local populations of invasive species can act as stepping stones for further dispersal.

scholarly journals Control of Chromium Hexavalent (Cr -VI) Pollution on Waste Water in Nickel Ore Extraction Industry with Phytoremediation Technology

2018 ◽  
Vol 68 ◽  
pp. 03011
Author(s):  
Erikha Maurizka Mayzarah ◽  
Setyo Sarwanto Moersidik ◽  
Lana Saria
Keyword(s):  
Waste Water ◽  
Mining Industry ◽  
Pistia Stratiotes ◽  
Water Lettuce

The issue that surfaces from the digging of limonite and saprolite zones on nickel ore mining is the oxidation of chromium to chromium hexavalent. The aim of this research is to analyze the efficiency level of phytoremediation technology to reduce chromium hexavalent on waste water of nickel ore mining industry. This study was done in situ to observe the potential of Water Lettuce (Pistia stratiotes) using self-designed experimental devices.. This research was divided into three part, such as the variation of plant’s weight of 10grams, 20grams, 30grams, 60grams, 70grams, and 150grams with interval of an hour for five hours, variation of chromium hexavalent of 0.5ppm, 1ppm, 2ppm, 5ppm, and 7ppm with interval of 4 days for 20 days, and variation HRT 1.5 hours, 2 hours, and 3 hours with interval of 24 hours for 16 days. The result of this research shows the average of efficiency on observation one, two and three are 18.5%, 89%, and 28%. The usage of phytoremediation technology shows the potential to reduce chromium hexavalent pollutant.

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