A late Holocene record of land-use history, soil erosion, lake trophy and lake-level fluctuations at Bj�resj�sj�n (south Sweden)

1991 ◽  
Vol 6 (1) ◽  
Author(s):  
M.-J. Gaillard ◽  
J.A. Dearing ◽  
F. El-Daoushy ◽  
M. Enell ◽  
H. H�kansson
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
Lake Level ◽  
Late Holocene ◽  
Land Use History ◽  
Lake Level Fluctuations ◽  
South Sweden ◽  
Holocene Record ◽  
Lake Trophy

Holocene Lake-Level Fluctuations of Lake Aricota, Southern Peru

2001 ◽  
Vol 56 (2) ◽  
pp. 181-190 ◽  
Author(s):  
Christa Placzek ◽  
Jay Quade ◽  
Julio L. Betancourt
Keyword(s):  
Debris Flows ◽  
Lake Level ◽  
Late Holocene ◽  
Vascular Plant ◽  
Lake Titicaca ◽  
Lake Level Fluctuations ◽  
Lacustrine Deposits ◽  
Plant Remains ◽  
Holocene Record ◽  
High Lake Levels

AbstractLacustrine deposits exposed around Lake Aricota, Peru (17° 22′S), a 7.5-km2 lake dammed by debris flows, provide a middle to late Holocene record of lake-level fluctuations. Chronological context for shoreline deposits was obtained from radiocarbon dating of vascular plant remains and other datable material with minimal 14C reservoir effects (<350 yr). Diatomites associated with highstands several meters above the modern lake level indicate wet episodes. Maximum Holocene lake level was attained before 6100 14C yr B.P. and ended ∼2700 14C yr B.P. Moderately high lake levels occurred at 1700 and 1300 14C yr B.P. The highstand at Lake Aricota during the middle Holocene is coeval with a major lowstand at Lake Titicaca (16°S), which is only 130 km to the northeast and shares a similar climatology. Comparisons with other marine and terrestrial records highlight emerging contradictions over the nature of mid-Holocene climate in the central Andes.

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