climate, this is why the marine ecosystem is considered to be very delicate and it needs to be protected. All these animals live in saltwater habitats. They live in or near rock pools, the ocean, beaches, mangroves and sand dunes. Deep sea plants Deep sea plants provide food, vegetation for other inhabitants by offering a favorable environment for microfauna and other sea organisms to develop. The microfauna are eaten by fish and other sea inhabitants. Phytoplankton-Deep sea plant that are growing in the experimental mesocosms. Under the microscope they are not much to look at look like small blobs. They grow rapidly, each cell divide into 2. Phytoplankton the deep sea plant growth is often described as `exponential' 1 cell divides in to 2, 2 cells divide into 4and so on. Therefore phytoplankton populations grow quickly also called as `phytoplankton bloom' and the numbers of phytoplankton will increase until there are no nutrients left in the water.
Kasutatud allikad 1. Plankton. http://et.wikipedia.org/wiki/Plankton 2. Plankton maailma veekogudes. Kai Piirsoo. http://web.zone.ee/haasikk/fff/9%20Plankton%20K%20Piirsoo.pdf 3. Fütoplankton. http://et.wikipedia.org/wiki/F%C3%BCtoplankton 4. Märkamatu kuid tähtis zooplankton. http://www.bioneer.ee/eluviis/kliima/aid-11901/M%C3%A4rkamatu-kuid-t %C3%A4htis-zooplankton 5. Zooplankton. http://et.wikipedia.org/wiki/Zooplankton 6. Seeking sailors to help measure phytoplankton populations. Foto: Richard Kirby. http://firstlook.pnas.org/seeking-sailors-to-help-measure- phytoplankton-populations 7. Early life stage dynamics. Plankton demography. Foto: Jerry Prezioso. http://nefsc.noaa.gov/nefsc/Narragansett/plankton.html 8. Towards a better understanding of marine bacterioplankton dynamics. Christina Preston. http://www.mbari.org/seminars/2005/winter2005/feb9_preston.htm 9. Planktoni paradoks. http://et.wikipedia.org/wiki/Planktoni_paradoks 10. http://commons.wikimedia
EESTI MAAÜLIKOOL Põllumajandus ja keskkonnainstituut Rain Annast Globaalne fütoplanktoni vähenemine Kursusetöö õppeaines „Algoloogia” PK.1459 Vee- ja maismaa ökosüsteemide rakendusbioloogia erialal PKI MAG 423 Tartu 2014 Kreeka keeles tähendab φυτόν (fütos) taime ja πλαγκτός (planktos) ekslevat või triivivat, mis annab kokku ekslev või triiviv taim. Fütoplanktoni osatähtsus maailmameres seisneb selle fotosünteesimise võimes, mille käigus toodetakse ligilähedaselt pool, kogu aastasest maakera esmasest orgaanilise aine biomassist. Taimne plankton on peamiselt toidubaasiks madlamal troofilisel astmel asuvatele organismidele, kellest toituvad kõrgemal toiduahelas olevad organismid, mõjutades seega kogu vee- elustikku. Niimoodi määrab fütoplankton maa...
02. September lõpp 33 Purse seining is the process of catching schooling fish near the ocean surface by circling them with a net. Once the fish have been encircled, a wire (purse line) running through the bottom of the net is winched tight to "close the purse" from below. Purse seining for herring can be especially tricky as the entire process is run in the dark of night when herring swim to the surface to feed on rising phytoplankton. No lights are used until the seine is closed. The entire process starts with the release of the seiner's "bug boat." The bug boat, which holds one end of the net, motors in place while the larger seiner encircles the herring school (generally clockwise by convention in the Gulf of Maine). As the seiner encircles the herring, net is released. The top of the net stays at the surface, buoyed by a "float line." The bottom of the net is connected to the purse
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