Recent variations in sediment organic carbon content in Lake Soyang (Korea)
Four gravity cores were taken from Lake Soyang, which was created by the construction of an artificial dam in 1973. The variation of organic carbon content of the bottom sediments since the construction was interpreted using a variety of sedimentological and geochemical measurements. Based on the te...
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| Veröffentlicht in: | Limnology 2005-04, Vol.6 (1), p.61-66 |
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| creator | Khim, Boo-Keun Jung, Hee Mdn Cheong, Daekyo |
| description | Four gravity cores were taken from Lake Soyang, which was created by the construction of an artificial dam in 1973. The variation of organic carbon content of the bottom sediments since the construction was interpreted using a variety of sedimentological and geochemical measurements. Based on the textural properties of sediments and the total organic carbon (TOC) content, it is clear that sediment organic carbon has been deposited very consistently throughout the postconstruction period, except for local sudden inputs caused by summer flooding events near fish farms or farmland areas. The autochthonous input resulting from the enhanced primary production led by phytoplanktons each year is likely to become a major problem at downstream sites within Lake Soyang. The vertical variation of δ13C values of sediment organic matter also reflects the fact that the level of autochthonous supply of organic carbon becomes high downstream. |
| doi_str_mv | 10.1007/s10201-004-0134-5 |
| format | Article |
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| source | SpringerNature Journals |
| subjects | Agricultural land Aquaculture Bottom sediments Carbon Carbon content Construction Downstream Farms Fish Fish culture Fish farms Flooding Gravity Lakes Organic carbon Organic matter Phytoplankton Primary production Sediment Sediments Total organic carbon Variation |
| title | Recent variations in sediment organic carbon content in Lake Soyang (Korea) |
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