Iran. J. Environ. Health. Sci. Eng.‚ 2010‚ Vol. 7‚ No. 2‚ pp. 299-306 GROWTH‚ PHOTOSYNTHESIS AND RESPIRATORY RESPONSE TO COPPER IN LEMNA MINOR: A POTENTIAL USE OF DUCKWEED IN BIOMONITORING Downloaded from http://journals.tums.ac.ir/ on Thursday‚ February 23‚ 2012 * N. Khellaf‚ M. Zerdaoui Laboratory of Environmental Engineering‚ Faculty of Engineering‚ Badji Mokhtar University‚ Annaba‚ Algeria Received 3 February 2010; revised 21 Jully 2010; accepted 20 August 2010 ABSTRACT Aquatic macrophytes
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Abstract Duckweed is a small aquatic plant that is able to grow rapidly‚ making it the ideal specimen for our experiment. It is hypothesized that altering the amount of light received by duckweed will alter its photosynthetic rate. It is predicted that a lower light intensity will lower the rate of growth in duckweed. Two treatment groups were covered with a screen in order to reduce light intensity. Both groups were kept under a controlled light source for fourteen days and plant counts were
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• Duckweed (Lemna minor) is a member of the Lemnaceae family (Monette et al. 2006) it is a small plant that floats on the surface of still or stagnant water that is usually rich in nutrients (Keddy 2010). It was seen that Duckweed thrived in areas of high nutrient content‚ high sunlight and warmer temperatures (Taylor 2011) .It was also seen that fertilisers contained nutrients‚ such as nitrates‚ which greatly influences duckweed growth. Duckweed is also used for feed for farm animal‚ such as ducks
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Duckweed 1.Taxanomy (Wikipedia) Kingdom: Plantae Order: Alismateles Family: Araceae Sub family : lemnoidae ( 2. habitat What? Duckweed is a stemless aquatic flowering plant . Lemencenae is a small free floating plant that grows on water surface.(clean flo) Where? Being a large populated plant duckweed is knownto be found all over the world.The most common places/sites to find duckweed are in ponds . They may also be found in fringesof lakesand in backwaters and some sloughs that are
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The effect of nutrient concentration on duckweed growth Gina Neonakis Biology 203L:11 Biology 203:10 November 14‚ 2011 Abstract Lemna minor‚ or duckweed‚ is a small plant that floats on the surface of stagnant water that is usually rich in nutrients. Phosphorus is an important macronutrient in the growth of aquatic plants. We tested the effect of phosphorus on duckweed population growth using a control medium rich in nutrients and compared it to the population growth in a medium that lacked
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Feed Industry Overview: Duckweed feed has been found to be a very nutritious feed source for many types of livestock. The fact that duckweed can be fed to animals in its wet form or dried for a more concentrated food source make an efficient‚ cost effective‚ harvester a possible attractive product for this market. Traditional Harvesters are economically unfeasible and manual harvesting is very labor intensive for medium to large scale operations. Feed prices can vary drastically due to crop
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The Effect of Duckweed on Natural Pollutants: Part I- Introduction Duckweed: What is it? When you type in “duckweed”‚ or Lemnaceae‚ if you choose to use the scientific name‚ on your computer‚ you see countless entries on how to get rid of duckweed from your pond‚ how much duckweed can be a nuisance when it gets stuck in your fish filter‚ etc. However‚ this is a plant that can be underestimated. I chose to work with duckweed in my project because of the countless ways it can help the environment
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The common duckweed also known as Lemna is often found in ponds‚ wetlands‚ and occasionally lakes. Duckweed is a very small‚ light green free-floating seed bearing plant. (aquaplant.com) Duckweed is known to take over the source of water it is in‚ in little time. It is forceful and can mix with other plants. The bodies of water that duckweed is mostly found in do not have waves or a strong current. They are typically only in still bodies of water although they can be found elsewhere. They are found
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BIOLOGY PRACTICAL ASSIGNMENT NAME OF INVESTIGATION: Effect of Eutrophication on Plant Growth RESEARCH QUESTION: How does the process of Eutrophication affect the growth of Duckweed? HYPOTHESIS: In this experiment‚ we are basically testing the use of different fertilizers on the growth of Duckweeds. Plants need fertilizers for their growth and to increase the yield of crops. But‚ at the same time‚ it depends on which Fertilizer being used and in how much proportion. Does it have sufficient nutrients
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Tyler Philbrook May 7‚ 2013 Biological Science 2 Plymouth State University Effects of Temperature on the Survival of Duckweed Introduction Common duckweed is a plant found floating in compact colonies in ponds‚ marshes‚ lakes‚ and slow moving streams. Duckweed is a very tiny pale green‚ seed bearing plant (Wang and Messing 2012). Duckweed consists of 1 to 3 fronds‚ or an oval shaped leave–like structure (Wedge and Burris 1982). These fronds grow no bigger than 10 millimeters and
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