Phytoplankton as an indicator of water quality health status
Phytoplankton as an indicator of water quality health status Phytoplankton as an indicator of water quality health status
Why is phytoplankton important?• Produces oxygen – needs of aquaticlife• Algae are the basis of most aquaticfood webs• Algae help to ‘purify’ water byabsorbing nutrients & heavy metals• Aquaculture – live feed• Industries - foods, nutraceuticals,pharmaceuticals, biofuels.Algae can be valuable indicators of environmental quality:Sensitive to changes in pH, nutrient or temperature.Monitor species composition & density - identifychanges in water quality.
Trophic State of Lakes• Oligotrophic• Unproductive lakes, low N & P); low poductivity; veryclear waters, high hypolimnetic O 2, high species diversity.• Mesotrophic• Intermediate level of productivity; clear water lakes withsubmerged aquatic plants & medium levels of nutrients.• Eutrophic• Productive with high nutrient supply, high productivity;Algae blooms – fish kills• Hypereutrophic• very nutrient-rich and productive lakes (eg. >100 ugP/L) – severe algal blooms; low transparency.(< 1m)
- Page 1 and 2: Fatimah Md Yusoff & Nursuhayati Abu
- Page 7 and 8: Eutrophication• Ecosystem respons
- Page 9 and 10: Consequences of eutrophication Incr
- Page 11 and 12: Indicators of Trophic StatusWater D
- Page 14 and 15: Shannon-Weiner’s diversity indice
- Page 16 and 17: Phytoplankton densities at PLg2 200
- Page 18 and 19: Phytoplankton groups % in Putrajaya
- Page 20 and 21: Phytoplankton abundance at diff. st
- Page 22 and 23: Cluster Analysis of Phytoplankton A
- Page 24 and 25: Phytoplankton & Management Phytopla
- Page 26 and 27: Conclusions• 194 species of phyto
- Page 28: Putrajaya LakeYes ???Blue-green alg
Trophic State <strong>of</strong> Lakes• Oligotrophic• Unproductive lakes, low N & P); low poductivity; veryclear <strong>water</strong>s, high hypolimnetic O 2, high species diversity.• Mesotrophic• Intermediate level <strong>of</strong> productivity; clear <strong>water</strong> lakes withsubmerged aquatic pl<strong>an</strong>ts & medium levels <strong>of</strong> nutrients.• Eutrophic• Productive with high nutrient supply, high productivity;Algae blooms – fish kills• Hypereutrophic• very nutrient-rich <strong>an</strong>d productive lakes (eg. >100 ugP/L) – severe algal blooms; low tr<strong>an</strong>sparency.(< 1m)
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