Characterizing changes in the sedimentary environment of a varved lake sediment record in southern central Finland around 8000 cal. yr BP

2008 ◽  
Vol 23 (8) ◽  
pp. 765-775 ◽  
Author(s):  
Antti E. K. Ojala ◽  
Atko Heinsalu ◽  
Tommi Kauppila ◽  
Teija Alenius ◽  
Matti Saarnisto
Keyword(s):  
Lake Sediment ◽  
Sedimentary Environment ◽  
Sediment Record ◽  
Southern Central ◽  
Varved Lake Sediment

A varved lake sediment record of the 10 Be solar activity proxy for the Lateglacial-Holocene transition

2016 ◽  
Vol 153 ◽  
pp. 31-39 ◽  
Author(s):  
Markus Czymzik ◽  
Florian Adolphi ◽  
Raimund Muscheler ◽  
Florian Mekhaldi ◽  
Celia Martin-Puertas ◽  
...  
Keyword(s):  
Solar Activity ◽  
Lake Sediment ◽  
Sediment Record ◽  
Varved Lake Sediment

scholarly journals Climate influence on organic carbon burial efficiency as revealed from a multi-proxy lake sediment record in Croatia

2020 ◽  
Author(s):  
Ivan Razum ◽  
Petra Bajo ◽  
Dea Brunović ◽  
Nikolina Ilijanić ◽  
Ozren Hasan ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Lake Sediment ◽  
Sediment Record ◽  
Carbon Burial ◽  
Organic Carbon Burial ◽  
Burial Efficiency

Using a lake sediment record to infer the long-term history of cyanobacteria and the recent rise of an anatoxin producing Dolichospermum sp.

Harmful Algae ◽  
2021 ◽  
Vol 101 ◽  
pp. 101971
Author(s):  
William O. Hobbs ◽  
Theo W. Dreher ◽  
Edward W. Davis ◽  
Rolf D. Vinebrooke ◽  
Siana Wong ◽  
...  
Keyword(s):  
Lake Sediment ◽  
Sediment Record ◽  
History Of

scholarly journals Lake-sediment record of PAH, mercury, and fly-ash particle deposition near coal-fired power plants in Central Alberta, Canada

2017 ◽  
Vol 231 ◽  
pp. 644-653 ◽  
Author(s):  
Benjamin D. Barst ◽  
Jason M.E. Ahad ◽  
Neil L. Rose ◽  
Josué J. Jautzy ◽  
Paul E. Drevnick ◽  
...  
Keyword(s):  
Fly Ash ◽  
Lake Sediment ◽  
Particle Deposition ◽  
Power Plants ◽  
Sediment Record

Geochemical responses to paleoclimatic changes in southern Sweden since the late glacial: the Hässeldala Port lake sediment record

2013 ◽  
Vol 50 (1) ◽  
pp. 57-70 ◽  
Author(s):  
Malin E. Kylander ◽  
Jonatan Klaminder ◽  
Barbara Wohlfarth ◽  
Ludvig Löwemark
Keyword(s):  
Lake Sediment ◽  
Late Glacial ◽  
Southern Sweden ◽  
Sediment Record ◽  
Paleoclimatic Changes

scholarly journals Potentially large post-1505 AD earthquakes in western Nepal revealed by a lake sediment record

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Z. Ghazoui ◽  
S. Bertrand ◽  
K. Vanneste ◽  
Y. Yokoyama ◽  
J. Nomade ◽  
...  
Keyword(s):  
Lake Sediment ◽  
Sediment Record

scholarly journals Pre-Columbian agriculture, fire, and Spanish contact: A 4200-year record from Laguna Los Mangos, Costa Rica

The Holocene ◽  
2019 ◽  
Vol 29 (11) ◽  
pp. 1743-1757 ◽  
Author(s):  
Erik N Johanson ◽  
Sally P Horn ◽  
Chad S Lane
Keyword(s):  
Costa Rica ◽  
Little Ice Age ◽  
Fire History ◽  
Ice Age ◽  
Sediment Record ◽  
Maize Agriculture ◽  
Terminal Classic ◽  
Early Portion ◽  
Southern Central ◽  
Subsistence Activities

We present a lake-sediment record of pre-Columbian agriculture and fire history from the lowlands of southern Pacific Costa Rica that captures the arrival of maize agriculture at ca. 3360 cal yr BP in the Diquís subregion of the Gran Chiriquí archeological region. Our 4200-year record from Laguna Los Mangos begins 1000 to 2000 years earlier than other lake records from the region and provides the first microfossil and geochemical evidence of vegetation and fire prior to the establishment of maize agriculture. This early portion of the record shows evidence of fire events associated with land clearance or field preparation and maintenance for subsistence activities. Alternatively, these were wildfires ignited unintentionally by people or naturally by lightning or volcanism. Evidence of early maize by ca. 3200 cal yr BP was found at Laguna Zoncho in the southeastern section of the Diquís subregion. Our discovery of early maize agriculture at ca. 3360 cal yr BP in the Laguna Los Mangos watershed in the northwestern portion of the Diquís subregion indicates a rapid adoption of maize agriculture in the region after initial introduction. Pre-Columbian agriculture and fire activity at Los Mangos is nearly continual until historic times, but with a decline after ca. 1170 cal yr BP, coincident with the early Terminal Classic Drought (TCD). We infer a pronounced drying of the lowland environment at Laguna Los Mangos based on a depositional hiatus in the record at ca. 950 during late TCD. Agricultural proxies indicate reduced watershed activity during the ‘Little Ice Age’ following Spanish contact in southern Central America until the 20th century.

The pre-Colombian footprint on terrestrial nutrient cycling in Costa Rica: insights from phosphorus in a lake sediment record

2009 ◽  
Vol 43 (4) ◽  
pp. 843-856 ◽  
Author(s):  
Gabriel M. Filippelli ◽  
Catherine Souch ◽  
Sally P. Horn ◽  
Derrick Newkirk
Keyword(s):  
Costa Rica ◽  
Nutrient Cycling ◽  
Lake Sediment ◽  
Sediment Record
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