- published: 24 Apr 2015
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An oligotroph is an organism that can live in an environment that offers very low levels of nutrients. They may be contrasted with copiotrophs, which prefer nutritionally rich environments. Oligotrophs are characterized by slow growth, low rates of metabolism, and generally low population density.
The adjective oligotrophic may be used to refer to environments that offer little to sustain life, organisms that survive in such environments, or the adaptations that support survival. Etymologically, the word "oligotroph" is a combination of the Greek adjective oligos (ὀλίγος) meaning "few" and the adjective trophikos (τροφικός)) meaning "feeding".
Oligotrophic environments include deep oceanic sediments, caves, glacial and polar ice, deep subsurface soil, aquifers, ocean waters, and leached soils.
Examples of oligotrophic organisms are the cave-dwelling olm; the bacterium, Pelagibacter ubique, which is the most abundant organism in the oceans with an estimated 2 × 1028 individuals in total; and the lichens with their extremely low metabolic rate.
Video shows what oligotrophic means. being deficient in nutrition. being deficient in plant nutrients, such as nitrogen or phosphorus. Oligotrophic Meaning. How to pronounce, definition audio dictionary. How to say oligotrophic. Powered by MaryTTS, Wiktionary
What happens when fertilisers get washed into lakes and rivers? A process called eutrophication. Learn all about it in this video. This is part of our sciences pilot for the virtual school. We would appreciate any comments or feedback. Want to learn more? Visit: http://www.thevirtualschool.com Twitter: http://www.twitter.com/virtualschooluk Facebook: http://www.facebook.com/virtualschooluk Our channel: http://www.youtube.com/virtualschooluk This video is distributed under a Creative Commons License: Attribution-NonCommercial-NoDerivs CC BY-NC-ND
Purchase this DVD here http://www.greatpacificmedia.com/ Segment from the program: Aquatic Biomes: Oceans, Lakes, Rivers, and Wetlands. DVD Description Our Aquatic Biomes DVD begins by looking at the characteristics common to all aquatic environments. The program then examines the littoral, limnetic and profundal zones of freshwater lakes, the seasonal cycling of O2 and nutrients, and the difference between oligotrophic and eutrophic lakes before observing how life changes along the course of rivers and explaining the ecological importance of wetlands. The photic, aphotic, and benthic ocean zones are then described and marine habitats such as tide pools, kelp forests, coral reefs, and vent communities explored.
East Lake, Newberry Caldera, Oregon, USA; September 11, 2010; Concordia University, Portland; SCI-112H Env. Sc. Honors, Dr. Sergei A. Polozov (filmed by Jake Pearson). Оз. Восточное, Кальдера Ньюберри, штат Орегон, США; 9.11.2010; Ун-т Конкордия, Потрланд, проф. Сергей А. Полозов (снято Джейком Пирсоном).
Dr Scott Nielsen, Assistant Professor, Department of Renewable Resources, University of Alberta presented a seminar on January 10, 2013. Abstract: Fire regulates biodiversity patterns and ecological processes in boreal forests. The effects of landscape heterogeneity on fire patterns, and thus biodiversity, is less well known. One landscape element common to boreal systems that affect fire patterns are lakes. In this talk I will first examine how landscape configuration regulates long-term patch dynamics (fire) in boreal forests and secondly explore the effects of patch size (i.e., habitat loss) and isolation (i.e., fragmentation) on biodiversity for a dynamic, fire-prone oligotrophic ecosystem in northern Saskatchewan. The behaviour of biodiversity in these systems has direct relevance to...
This video shows you how to say or pronounce Oligotrophic. How would you say Oligotrophic?
This video shows you how to say or pronounce Oligotrophic. How accurate does it say Oligotrophic? How would you say Oligotrophic?
Gosaikunda (गोसाइँकुण्ड), also spelled Gosainkunda and Gosain Kunda is an alpine freshwater Oligotrophic lake in Nepal's Langtang National Park, located at an altitude of 4,380 m (14,370 ft) in the Rasuwa District with a surface of 13.8 ha (34 acres). Together with associated lakes, the Gosaikunda Lake complex is 1,030 ha (4.0 sq mi) in size and has been designated a Ramsar site on 29 September 2007
Eutrophication is an excess of nutrients in a body of water. It causes an overgrowth of algae, which causes a chain reaction of events that destroys the lake ecosystem. This is my first attempt at a live-action video, instead of just me writing on paper. Leave feedback! Shot in L'Amoreaux Park, Scarborough, Ontario.
Learn how to pronounce Oligotrophic This is the *English* pronunciation of the word Oligotrophic. According to Wikipedia, this is one of the possible definitions of the word "Oligotrophic": An oligotroph is an organism that can live in an environment that offers very low levels of nutrients. They may be contrasted with copiotrophs, which prefer nutritionally rich environments. Oligotrophs are characterized by slow growth, low rates of metabolism, and generally low population density. The adjective oligotrophic may be used to refer to environments that offer little to sustain life, organisms that survive in such environments, or the adaptations that support survival. Etymologically, the word "oligotroph" is a combination of the Greek adjective oligos (ὀλίγος) meaning "few" and the adject...