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- Tullgren_funnel abstract "A Tullgren funnel, also known as Berlese funnel or Berlese trap, is an apparatus used to extract living organisms, particularly arthropods, from samples of soil. The Tullgren funnel works by creating a temperature gradient over the sample such that mobile organisms will move away from the higher temperatures and fall into a collecting vessel, where they perish and are preserved for examination. The illustration shows how it works: a funnel (E) contains the soil or litter (D), and a heat source (F) such as an electric lamp (G) heats the litter. Animals escaping from the desiccation of the litter descend through a filter (C) into a preservative liquid (A) in a receptacle (B). This illustration is merely a schematic, since usually the soil sample will not be crumbled and poured into the funnel (this would inevitably lead to a high amount of soil particles in the preservation fluid requiring laborious work to sort out the soil organisms). In fact, the soil sample is placed on a mesh sieve that will allow the soil animals to pass but should retain most of the soil particles. This type of extraction is commonly referred to as Berlese funnel or Tullgren funnel. Antonio Berlese described this method of dynamic sampling in 1905 with a hot water jacket as heat source. In 1918 Albert Tullgren described a modification, where the heating came from above by an electric bulb and the heat gradient was increased by an iron sheet drum around the soil sample. Today's extraction funnels of this type usually combine elements from both publications and thus should be referred to as Berlese-Tullgren funnel.".
- Tullgren_funnel thumbnail Berlese.svg?width=300.
- Tullgren_funnel wikiPageID "27256756".
- Tullgren_funnel wikiPageRevisionID "590938669".
- Tullgren_funnel hasPhotoCollection Tullgren_funnel.
- Tullgren_funnel subject Category:Entomology_equipment.
- Tullgren_funnel type Artifact100021939.
- Tullgren_funnel type Device103183080.
- Tullgren_funnel type Instrument103574816.
- Tullgren_funnel type Instrumentality103575240.
- Tullgren_funnel type Object100002684.
- Tullgren_funnel type PhysicalEntity100001930.
- Tullgren_funnel type ScientificInstrument104147495.
- Tullgren_funnel type ScientificInstruments.
- Tullgren_funnel type Whole100003553.
- Tullgren_funnel comment "A Tullgren funnel, also known as Berlese funnel or Berlese trap, is an apparatus used to extract living organisms, particularly arthropods, from samples of soil. The Tullgren funnel works by creating a temperature gradient over the sample such that mobile organisms will move away from the higher temperatures and fall into a collecting vessel, where they perish and are preserved for examination.".
- Tullgren_funnel label "Aparat Tullgrena".
- Tullgren_funnel label "Tullgren funnel".
- Tullgren_funnel label "قمع برليز".
- Tullgren_funnel sameAs Aparat_Tullgrena.
- Tullgren_funnel sameAs m.0bwkbwm.
- Tullgren_funnel sameAs Q3696188.
- Tullgren_funnel sameAs Q3696188.
- Tullgren_funnel sameAs Tullgren_funnel.
- Tullgren_funnel wasDerivedFrom Tullgren_funnel?oldid=590938669.
- Tullgren_funnel depiction Berlese.svg.
- Tullgren_funnel isPrimaryTopicOf Tullgren_funnel.
