Meetodeid orgaanilise aine hävitamiseks on mitmeid, kuid kõige tuntum on vesinikperoksiidi meetod vesinikperoksiidi 30% lahusega. Peale keerukat kemikaalide töötlemist, keetmist ja proovi puhastamist sisaldavat protsessi valmistatakse proov. Heas proovis on ühes alas näha kaheksa diatomeed. Pealisklaas kinnitatakse alusklaasile ja proov on valmis analüüsimiseks (Martin, 2012). 3 Kasutatud allikad Martín, G., Fernández, M. de los R. 2012. Diatoms as Indicators of Water Quality and Ecological Status: Sampling, Analysis and Some Ecological Remarks. In Ecological Water Quality – Water Treatment and Reuse (Voudouris, D. ed) pp. 183-204. InTech. Olli, K. 2014. Protistid. [WWW] http://moritz.botany.ut.ee/~olli/PE/Loeng02.pdf (02.11.2014) Olli, K. 2010. Algoloogia. [WWW] http://moritz.botany.ut.ee/~olli/aldoc/phyco.pdf (02.11.2014) EE. 2006
6. Light: Direct sunlight is highly injurious to most of the microorganisms except algae. Therefore upper portion of the surface soil a centimeter or less is usually sterile or devoid of microorganisms. Effect of sunlight is due to heating and increase in temperature (More than 45°) 7. Soil Reaction / Soil PH: Soil reaction has a definite influence / effect on quantitative and qualitative composite on of soil microbes. Most of the soil bacteria, blue-green algae, diatoms and protozoa prefer a neutral or slightly alkaline reaction between PH 4.5 and 8.0 and fungi grow in acidic reaction between PH 4.5 and 6.5 while actinomycetes prefer slightly alkaline soil reactions. Soil reactions also influence the type of the bacteria present in soil. For example nitrifying bacteria (Nitrosomonas & Nitrobacter) and diazotrophs like Azotobacter are absent totally or inactive in acid soils, while diazotrophs like Beijerinckia, Derxia, and
competition with other organisms, because the environment is likely to change again. Traits that are thought to be characteristic of r-selection include: high fecundity, small body size, early maturity onset, short generation time, and the ability to disperse offspring widely. Organisms whose life history is subject to r-selection are often referred to as r-strategists or r-selected. Organisms with r-selected traits range from bacteria and diatoms, through insects and weeds, to various semelparous cephalopods andmammals, especially small rodents. K-selection (stable environments) In stable or predictable environments, K-selection predominates as the ability to compete successfully for limited resources is crucial and populations of K-selected organisms typically are very constant and close to the maximum that the environment can bear (unlike r-selected populations, where population sizes can change much more rapidly).
Bioloogia Page 13 Rakud 23. september 2009. a. 17:43 Hydra - will paralyze its prey Bryozoan - moss animalcule Bell Animalcule Volvox -algae Bioloogia Page 14 Stentor - trumpet animalcule Spirogyra - algae Noctiluca Microscopic algae Bioloogia Page 15 Microscopic Algae Starfish Larva Diatoms Volvox - each black dot is a cell Bioloogia Page 16 Epiteelkude 23. september 2009. a. 13:08 Ehituslikud iseärasused: · Rakud oaiknevad tihedalt üksteise kõrval · Rakuvaheainet on vähe · Teistest kudedest eraldatud bassaalmembraaniga · Esinevad epiteelirakud, närvilõpmed, vahel ka lihanäärmed Funktsioonid · Katab keha ja elundite pindu · Vooderdab kehaõõnt
· ~298,000 species of plants (of which 215,644 have been described and cataloged) · ~611,000 species of fungi (moulds, mushrooms) (of which 43,271 have been described and cataloged) · ~36,400 species of protozoa (single-cell organisms with animal-like behavior, eg. movement, of which 8,118 have been described and cataloged) · ~27,500 species of chromista (including, eg. brown algae, diatoms, water moulds, of which 13,033 have been described and cataloged) Seega hästikirjeldatud on taimed, vaid üle 80 000 on veel kirjeldamata, kui võrrelda loomadega, kellest on kirjeldamata ligikaudu 7 miljonit. Ka seeni on kirjeldatud vaid umbes 7 %. Muid pisiorganisme on päris hästi uuritud. 86% maismaa liikidest ning 91% mere liikidest on ikka veel avastamata. Meresügavikesse uurima minekuks on vaja keerulist tehnikat,
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