subject predicate object context
s323 has-courseware 170375
170375 url holdingsInfo?bibId=170375
170375 isAbout model
170375 isAbout soil profile
170375 isAbout beech leaf-litter
170375 isAbout collembola
170375 isAbout electron microscopes
170375 isAbout field sampling
170375 isAbout fungal mycelium
170375 isAbout soil arthropods
170375 isAbout soil fungi
170375 isAbout soil organisms
170375 Contributor 8f2ba2c246dd50462c8d75d7f1ee43b9
170375 Table Of Contents Shots of beech woodland at Castle Eden Dene, County Durham. Commentary discusses, very briefly the eco-system of decomposing leaves on the woodland floor. Shots of Colin Dickinson and John Anderson looking for soil samples. Shots of Dickinson taking soil samples with a corer. He bisects one of his cored samples and explains its composition. Shots of Dickinson in the laboratory. He demonstrates the soil plate technique for culturing micro-organisms. Dickinson shows incubated soil samples and points out the various micro-organic cultures found there. Shots of micrographs and film (under magnification) showing several species of fungi found in the sample. Shots of Dickinson in woodland. He removes the top layer of leaves and points out the fungal growth beneath. Shots of beech leaf samples from several layers of woodland floor in various stages of decomposition being prepared for electron microscopic examination. Shots of beech leaf samples under the stereo electron microscope. Commentary points out the micro-organisms found there. Shots of John Anderson in Bagley Wood, Oxfordshire. He demonstrates a technique for removing chunks of soil in situ. Anderson adds dry CO? to freeze his sample. Anderson with his frozen sample in the laboratory. He demonstrates a technique which prepares the sample for examination. Shots of a cample section. Commentary by Anderson points out its constituent parts. Shots of the following animals found in the sample: Mites; Millipede; Woodlice. Shots of a woodlouse being dissected to determine gut content. Micrograph of gut contents shows large, broken up pieces of beech leaf. Shots of springtails (Collembolla) Commentary describes the animal. Shots of springtail being dissected to determine gut content. Micrograph of springtail gut content shows main fungi. Shots of soil mites. Shot of micrograph of soil mite gut contents (Gut content analysis can determine the position of the animal in the soil). Shots of Collembolla found in the soil humus layer. Its adaptation to this environment is discussed. Shots of Enchytraeid worms from the humus layer. Commentary discusses their role in litter decomposition. Mary Bell, Colin Dickinson, John Anderson with a model of the woodland decomposition layer. It shows the upper litter layer, and the humus layer. They discuss the way in which fungi and small animals described above form an ecosystem which effectively decomposes leaf litter.They use the model to aid their discussion.
170375 locator holdingsInfo?bibId=170375
170375 type Collection
170375 label Woodland decomposers
170375 Description This programme is an introduction to the decomposition of beech leaf litter. The following techniques are seen: field sampling with soil corer and soil plate for culturing micro-organisms; field sampling of a soil block, followed by impregnation and examination of soil animal in situ in a soil section. A variety of soil organisms are seen in close up and under microscopes.
170375 Publisher 07f21de77e80d6bd38c3be6db6cb323d
170375 Title Woodland decomposers