Pollen, diatom and plant macrofossil assemblages indicate a low water level phase of Lake Peipsi at the beginning of the Holocene

Author(s):  
Tiit Hang ◽  
Volli Kalm ◽  
Kersti Kihno ◽  
Martynas Milkevičius
Hydrobiologia ◽  
2008 ◽  
Vol 599 (1) ◽  
pp. 13-21 ◽  
Author(s):  
Tiit Hang ◽  
Volli Kalm ◽  
Kersti Kihno ◽  
Martynas Milkevičius

1987 ◽  
Vol 27 (3) ◽  
pp. 297-311 ◽  
Author(s):  
Norton G. Miller ◽  
Richard P. Futyma

AbstractSediment, pollen, and plant macrofossil stratigraphies from two small oligotrophic Chamaedaphne-Sphagnum peatlands provide data about local hydrologic changes in northern Michigan during the Holocene. Gleason Bog started about 8000 yr B.P. as a shallow pond that supported rich fen vegetation. After it was partly filled with peat and sand (about 4000 yr B.P.), the vegetation changed to oligotrophic bog. At Gates Bog paludification starting about 3800 yr B.P. caused peat accumulation over sand without an initial pond phase. The onset of peat accumulation at both sites is attributed to a rise in the water table resulting from the onset of cool and moist late Holocene climates. The water table of Gleason Bog is linked to the water level of adjacent Douglas Lake, which may have undergone a simultaneous rise. The results emphasize the individuality of hydrological conditions and hydroseral development in northern Michigan peatlands.


Hydrobiologia ◽  
2008 ◽  
Vol 599 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Jaan-Mati Punning ◽  
Galina Kapanen ◽  
Tiit Hang ◽  
Natalia Davydova ◽  
Mihkel Kangur

2015 ◽  
Vol 83 (3) ◽  
pp. 459-468 ◽  
Author(s):  
Elena Yu. Novenko ◽  
Andrey N. Tsyganov ◽  
Elena M. Volkova ◽  
Kirill V. Babeshko ◽  
Nikita V. Lavrentiev ◽  
...  

Holocene climatic variability and human impact on vegetation are reconstructed from a region in central European Russia, which lies at an important ecotone between broadleaf forest and steppe. For the first time in this region we adopt a multi-proxy approach that combines analysis of local mire conditions from plant macrofossil and testate amoeba analyses with pollen-based quantitative climate reconstruction. The proxies indicate a long-term warming trend from 9700 to 7500 cal yr BP, interrupted by a series of short-term cold events. From 7500 to 5000 cal yr BP the results imply a relatively stable climate, warmer and drier than present, spanning the Holocene Thermal Maximum. Since 5000 cal yr BP the data suggest a change to cooler climate, but with centennial-scale variability. This shift at around 5000 cal yr BP is supported by extensive evidence from other sites. In the early Holocene, the region was occupied mainly by pine and birch forests. Broad-leafed forests of oak, lime and elm expanded after 7800 cal yr BP and remained dominant until the last few centuries. During the historical period, vegetation changes have been driven mainly by human activities.


2017 ◽  
Vol 58 (1) ◽  
pp. 43-56 ◽  
Author(s):  
Anu Kisand ◽  
Anna-Liisa Kirsi ◽  
Kristiina Ehapalu ◽  
Tiiu Alliksaar ◽  
Atko Heinsalu ◽  
...  

Author(s):  
Jaan-Mati Punning ◽  
Galina Kapanen ◽  
Mihkel Kangur ◽  
Tiit Hang ◽  
Natalia Davydova

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