منابع مشابه
Deciphering climatic history from lake sediments
Reconstructing climate from lake sediments can be challenging, because the response of lakes and various components of lake systems are mediated by non-climatic factors, such as geomorphic and hydrologic stetting. As a result, the magnitude of lake response to climatic forcing may be non-linear. In addition, changes in the lake system associated with the aging process or non-climatic influences...
متن کاملPhosphorus flux from bottom sediments in Lake Eucha, Oklahoma.
Phosphorus inputs into reservoirs include external sources from the watershed and internal sources from the reservoir bottom sediments. This study quantified sediment P flux in Lake Eucha, northeastern Oklahoma, USA, and evaluated the effectiveness of chemical treatment to reduce sediment P flux. Six intact sediment-water columns were collected from three sites in Lake Eucha near the reservoir ...
متن کاملRecovery of crenarchaeotal ribosomal DNA sequences from freshwater-lake sediments.
We report several novel environmental sequences of archaea from the kingdom Crenarchaeota, recovered from anaerobic freshwater-lake sediments in Michigan. A nested PCR approach with Archaea- and Crenar-chaeota-specific primers was used to amplify partial Small-subunit ribosomal DNAs. Phylogenetic analysis of seven sequences shows that these DNAs represent a monophyletic lineage diverging prior ...
متن کاملA conduit dilation model of methane venting from lake sediments
Citation Scandella, Benjamin P. et al. " A conduit dilation model of methane venting from lake sediments. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. [1] Metha...
متن کاملMethane efflux from lake sediments through water lilies.
During winter, when water lilies have no surface leaves, the gases in the rhizome lacunae approach equilibrium with the gases of the sediment water. The resulting increase of internal pressure is manifested by the sustained streams of bubbles (up to 37 percent methane and 6 percent carbon dioxide) that escape when emerging leaves are torn in the spring. Methane continues to enter the roots and ...
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ژورنال
عنوان ژورنال: GEOCHEMICAL JOURNAL
سال: 1973
ISSN: 0016-7002
DOI: 10.2343/geochemj.7.215