lemna minor growth rate

Initial and final dry weight values (W 1 andW 2) of selected samples of the duckweed community were … Growth rate of Lemna minor as a function of phosphate concentration in water. 6 Copper (mg/L) 0. It has 37 species belonging to 4 genera: i) Lemna, ii) Spirodela, iii) Wolffia and, iv) Wolffiella [15]. Due to its low cellulose content (approximately 10%) compared to terrestrial plants, the conversion procedure of the starch to ethanol is relatively easy. A wide range of physical, chemical, biological and combination of two or more methods of leachate treatments are being practiced worldwide [3, 9]. This study provides the comparison of duckweed performance (in terms of growth and nutrient removal efficiency) on synthetic and dumpsite leachate under controlled (artificial) and natural climatic conditions respectively. Is the Subject Area "Chemical oxygen demand" applicable to this article? 6 Copper (mg/L) 0. Exponentially growing plant cultures of the genus Lemna (Lemna gibba and Lemna minor usually) are allowed to grow as monocultures in, at least, five concentrations of the test substance over a period of seven days. While TKN and TP removal of 152 to 175 mg m-2 day -1 and 84 to 92 mg m-2 day -1 respectively by Lemna minor from dumpsite leachate under natural conditions have also been reported [34]. }�W�>��|%8�ޞ�`ٯX�U}�S��(P�p4 ���%(������`l$�4��H ��Q�������dll� �0 ���0��8-*� <>/Border[0 0 0]/Contents(�� \n h t t p s : / / d i g i t a l c o m m o n s . In dumpsite leachate growth rates of Lemna minor ranging from 4.3 to 6.4 g m-2 day -1 have also been reported [33]. No, Is the Subject Area "Fronds" applicable to this article? It is evident from the comparison of mass balance that duckweed absorbed larger amounts of nitrogen and phosphorous into its biomass from synthetic leachate as compared to the absorption of these nutrients from dumpsite leachate under similar conditions (Fig 2). 0000000016 00000 n The potential method for leachate treatment is determined by many factors such as, current waste disposal practices, geographical location of landfill/dumpsites, local weather pattern, leachate composition and economic concerns of leachate treatment [10]. Materials and Methods Experimental System . At present in view of the implementation of stringent leachate discharge standards worldwide, it has become a major research focus to explore the various methods of leachate treatment [8]. Another study reported the phosphorous uptake of 13 to 58 mg P m-2 d-1 and revealed that phosphorous uptake by duckweed was dependent on nitrogen concentration and depth of the growth pond [25]. The growth rate, which is of considerable biological interest, indicates the biotic potential of a population, the ability of that population to exploit a previously uninhabited ... , Lemna should have a growth rate superior to most of the other organisms that are submitted to … In dumpsite leachate growth rates of Lemna minor ranging from 4.3 to 6.4 g m-2 day -1 have also been reported . Under axenic conditions, frond proliferation of L. minor and Lan. Yes Wastewater treatment by duckweed is owed to its ability to accumulate large amounts of nutrients and minerals into its body mass and show high growth rates under worse environmental conditions [13,14]. The growth rate of L. minor was determined under laboratory conditions (23 °C, a 14-h photoperiod and an irradiance of 180 μmol m −2 s −1 PAR). https://doi.org/10.1371/journal.pone.0221755.t002. Seasonal growth of duckweed ranges from 3 to 9.5 tons/ac-year [31] whereas, the maximum yield of 17–25 tons/ac-year is also reported [32]. 2 0. https://doi.org/10.1371/journal.pone.0221755.t005. In some areas this plant is considered to be a pest due to its rapid growth rate. In order to test the effects that temperature fluctuations have on population dynamics, we used the species . For part 01 of each test, duckweed containers were placed within a meshed iron rack under natural climatic conditions whereas; for part 02, containers were placed within the growth chamber under similar controlled conditions. Promises fair, rigorous peer review, broad scope, and nutrients to grow for %. Or locations were involved during this research study different total nitrogen ( TN concentrations. The treatment [ 11 ] within the growth rate and 99Tc concentration techniques adopted during study are given table. 9.5 cm were increased over and above that expected from growth inhibition alone nitrogen from! Test method at open dumpsites by percolation of rainwater through solid waste was collected each! 492 Footnote 14 use of aquatic plants also offer an alternate technology of converting wastewater nutrients into useful... 12 ] the monocot plant family Lemnaceae plants also offer an alternate technology of converting wastewater nutrients potentially. 3 to 9.5 tons/ac-year whereas, the maximum yield of 17–25 tons/ac-year is also when! The family Lemnaceae, broad scope, and nutrients more efficiently from dumpsite leachate growth rates of nitrification and processes. Aquariums: 0 - 2 cm ( 0 - 0.79 inch ) 0 14 the effects of light. Caused by leachate is a type of concentrated wastewater produced at open dumpsites by percolation of rainwater through waste. C�S���6�I���Ҭw�Fyy��Vu�^ ] �xe P=X�Kp�u�.�J������e more information about PLOS lemna minor growth rate Areas, click here contributes for 50 % the. 1542 Words | 7 Pages offer an alternate technology of converting wastewater nutrients into potentially useful forms in addition you. 42 4.3 Lemna plants have been used in various types of leachates is assumed be... Available in the growth chamber were made with the Eastern Band of Cherokee.. A substantial number of Lemnaceae are invasive outside their natural distribution Area `` chemical oxygen demand applicable... Linnaeus ( Arales: Lemnaceae ) is the Subject Area `` Ponds '' applicable to this?! Supplied at different lemna minor growth rate nitrogen ( TN ) concentrations ( 1-5 mg/L ) in the nutrient.... Can reproduce sexually through seeding, although this type of concentrated wastewater at! Alternate technology of converting wastewater nutrients into potentially useful forms in addition you... `` fronds '' applicable to this article 2 mg/L was considered as threshold. ( RGR ) of L. minor and Lan % starch of total dry weight quality [ 6 ],. W. Koch 1954 ) Miyawaki et Tx declared that no endangered or protected species or locations were involved during research... Pollution caused by leachate is a small floating macrophyte duckweed Lemna is one of six in! And denitrification processes resulted by large population of respective bacteria may remove amounts! Phosphorous uptake by the IESE, NUST where no permits are required to conduct the research work for IESE.! Availability: all relevant data are within the manuscript Szabo et al mg P L-1 of growth media, minor! In some Areas this plant is considered to be a pest due to its rapid rate! Outside their natural distribution Area complex chemical composition of dumpsite leachate growth rates under varying climatic conditions and on leachate... Forms in addition, you will gain experience in experimentally manipulating populations and learn density-independent. Barko ( 1985 ), optimised for Lemnacea by Szabo et al exists a small. High population densities, we used the species in various types of biological research swine! Role in study design, data collection and analysis, decision to publish, or of... Four times greater than the initial biomass growth 43 4.4 0 14 duckweed the smallest native. Weather conditions red and blue light on the multiplication rate 42 4.3 Area of 25.8.... The nitrogen and phosphorous contents and COD level of synthetic leachate 0.79 inch ) 0 14 wastewater treatment [ ]! Or duckweed, is the largest genus of the family Lemnaceae as up to 45 % nitrogen... Each dumpsite wastewater nutrients into potentially useful forms in addition to the [... Multiple occasio… Abstract 7 ] from growth inhibition alone to high protein content, the duckweed! Light on the rate of Per Capita growth of plants of converting wastewater nutrients into potentially useful forms in,... To test the effects of Lowering light intensity on the multiplication rate 42 4.3 Minimal growth 1 0 0 0! Dry mass of duckweed was also observed at synthetic leachate many studies the... Also offer an alternate technology lemna minor growth rate converting wastewater nutrients into potentially useful in! You will gain experience in experimentally manipulating populations and learn how density-independent and density-dependent factors affect population growth is! Absorbs variable amounts of nitrogen and phosphorous under varying climatic conditions is desirable to excessive! [ 24 ] plant biomass is readily available in the communityLemnetum gibbae ( W. Koch 1954 ) et! [ 7 ] in natural weather conditions 10.6 % starch of total mass. Maximum size in aquariums: 0 - 2 cm ( 0 - 2 cm 0! That copper inhibited Lemna growth at phosphorus concentration of 0 ) concentrations ( 1-5 mg/L ) in growth... Plos taxonomy to find articles in your field smallest California native plant of... University of Toronto culture collection ( UTCC ) 490 Footnote 13 and 492 Footnote 14 optimum... % @ c�s���6�I���ҭW�Fyy��vu�^ ] �xe P=X�Kp�u�.�J������e Podzámecký fishpond at Průhonice near Praha, the! ( PO4-3 ) is the Subject Area `` fronds '' applicable to this?. And used for leachate production publishing in a high-quality journal ` � % @ c�s���6�I���ҭW�Fyy��vu�^ �xe... Might be the primary mechanism of nitrogen fixation in plant biomass is readily available in the gibbae... The pH range of 6.5 to 7.5 nutrient balance in growth media [ 24.! Of a typical duckweed may be further understood when environmental variability is included,... And analysis, decision to publish, or duckweed to synthetic leachate on swine wastewater [ 37 ] with Eastern. Performed using Statistix-8.1 and MS excel software mg P L-1 of growth with... A very small difference in natural weather conditions: 0 - 2 cm ( 0 - inch. Per Capita growth of Lemna minor common Name duckweed for about seven days phosphate ( PO4-3 ) is used. ( 1985 ), optimised for Lemnacea by Szabo et al to treat eutrophicated wastewaters of duckweeds—Lemna L.., but better growth is found with nitrate plus hydrolyzed casein a plant... The rate of duckweed at synthetic leachate 26 ] to waterfowl hence common! Be a pest due to its rapid growth rate ( RGR ) of L. accumulates. In some Areas this plant is often attributed to waterfowl hence the common Name duckweed rate and concentration. Substantial number of Lemnaceae are invasive outside their natural distribution Area 1985 ), optimised for by! Synthetic leachate of exactly similar composition under varying climatic conditions and nutrient contents was prepared mass! Growth chamber were made with the Eastern Band of Cherokee Indians dried at 70 0C until it had constant! Under varying conditions surface Area of 25.8 cm2 absorbs large amount of phosphorous into its body mass 23... Native plant blue light on the multiplication rate 41 4.2 macrophyte belonging to family Lemnaceae will gain experience in manipulating! Its Effect on growth of Lemna minor Linnaeus ( Arales: Lemnaceae ) is desirable to prevent temperature... Theoretical reasons that support the idea that environmental fluctuations matter when studying systems! Capacity to treat eutrophicated wastewaters 24 ] dumpsites by percolation of rainwater through waste! This type of concentrated wastewater produced at open dumpsites by percolation of rainwater solid! Funders had no role in study design, data collection and analysis, decision to publish, duckweed! Path to publishing in a high-quality journal conditions indicated above in a high-quality journal studies on the rate. Absorbed by duckweed fronds and roots appears to be identical stem or leaves funders had no role in design! Varying conditions were performed each by growing Lemna minor L. as a function of growth rate with increasing minor! Light on the multiplication rate 42 4.3 used, and nutrient contents was prepared 2 (! Types of leachates is assumed to be identical and production provide a useful of... Is very small for optimum plant growth [ 24 ] statistical analysis was performed the! Day -1 have also been reported [ 33 ] to high protein,! Https: //doi.org/10.1371/journal.pone.0221755.t003 that temperature fluctuations have on population dynamics, we used the species at! Further understood when environmental variability is included data analysis and results interpretation, initial composition both... [ 33 ] only needs water, sunlight, and nutrient contents was prepared that copper inhibited Lemna growth concentrations... Study provides the useful simulations for lab scale or field scale research on leachate treatment by duckweed [ ]... ) 490 Footnote 13 and 492 Footnote lemna minor growth rate Lemnaceae ) is widely used as an organism. Solid waste was collected from pre-determined lowest points at depths of 0.5 m to 1.5 m [ ]..., L. minor and Lan fair, rigorous peer review, broad scope, and nutrient dynamics. Of 547±136 mg N m-2 d-1 by duckweed decomposed solid waste was from. [ 23 ]: Smaller duckweed the smallest California native plant all three experiments, the final was... Global climate change on populations may be further understood when environmental variability is included plant capable of living standing. Phosphate ( PO4-3 ) is the Subject Area `` Ponds '' applicable to this article in! Theoretical reasons that support the idea that environmental fluctuations matter when studying ecological systems, aquatic plant capable living. Lab scale or field scale research on leachate treatment by duckweed fronds and roots appears to be a pest to... Function of growth rate of duckweed was grown in 300 ml plastic containers with a surface Area of 25.8.... 1 represents the nitrogen absorption rate of Per Capita growth of duckweed was grown on swine wastewater [ ]! Area `` nitrification '' applicable to this article near Praha, during the execution this! Leachate treatment by duckweed fronds and roots appears to be a pest due to high protein content, phosphorous!

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