Chemical, biological, and trophic status of temperate lakes can be strongly influenced by the presence of late-glacial marine sediments
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F19%3A00000340" target="_blank" >RIV/00025798:_____/19:00000340 - isvavai.cz</a>
Result on the web
<a href="https://www.tandfonline.com/doi/abs/10.1080/10402381.2019.1669747" target="_blank" >https://www.tandfonline.com/doi/abs/10.1080/10402381.2019.1669747</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/10402381.2019.1669747" target="_blank" >10.1080/10402381.2019.1669747</a>
Alternative languages
Result language
angličtina
Original language name
Chemical, biological, and trophic status of temperate lakes can be strongly influenced by the presence of late-glacial marine sediments
Original language description
Lake Auburn, Maine, is a water supply for 60,000 people. Unusual silt/clay sediment, >4m thick, occurs 15 cm below gyttja in deep water cores. We characterized cores taken in 2015 and 2016 (57 and 425cm long, respectively), from 35m. We determined 137Cs, 210Pb, and 206P/204Pb ratios to establish chronology for the cores and to link them stratigraphically. At least 1.1m of sediment has accumulated since European settlement due to watershed erosion from land clearance and disturbance from about 1750 onward. The increased lake level from dams established in 1851 and the 1950–1960s has caused shoreline erosion. Extraction of sediment with HCl, scanning electron microscopy, and energy-dispersive spectroscopy analyses confirmed the presence of apatite (Ca5(PO4)3(OH)) for at least the upper 3.5m of sediment. The apatite is soluble because of the circumneutral pH and relatively low Ca2þ concentrations. This modern sediment is derived from postglacial marine silt/clay sediment and represents a rarely considered internal source of P that predisposes the lake’s water column to higher total P, rendering it more susceptible to episodic eutrophication from stresses including higher temperatures, more frequent high-intensity weather phenomena, and longer ice-free periods with stronger and longer stratification. This previously unrecognized source of P must be considered in water quality management, including chemical mitigation such as aluminum addition, lake level manipulation, and watershed erosion control. Similar situations likely exist in other coastal lakes in postglacial terrain that was inundated during deglaciation, and in inland lakes receiving sediment directly during deglaciation.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10505 - Geology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Lake and Reservoir Management
ISSN
1040-2381
e-ISSN
—
Volume of the periodical
36
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
17
Pages from-to
14-30
UT code for WoS article
000494410800001
EID of the result in the Scopus database
2-s2.0-85074868217