Abstract
ABSTRACT We determined the pattern, rate, and extent of deposition of bulk sediments and sediment-bound phosphorus (P) in Black Lake. Vertical gradients in total phosphorus (TP) and 137Cs often were irregular within cores and variable among cores, reflecting sediment disturbances including bioturbation, resuspension, and lateral transport. Surface sediments exhibited a horizontal spatial gradient in TP content, with P levels that declined downstream from the lake inlet, which reflected a large input of settleable P from the primary tributary. Sediment 137Cs and TP data suggested an average lake-wide sediment accumulation rate of approximately 0.6 cm yr−1 since the early 1960s and greater accumulation of TP in 1975–90 than during 1960–75. The mean depth of sediment accumulation over bedrock was estimated to be at least 3.6 m. These data indicate the contemporary rate of water depth decrease due to sediment accumulation in Black Lake is much greater than the lake's postglacial average, and the rate of sedim...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
