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Palaeoenvironmental information from the palynology of an 800year old bat guano deposit from Măgurici Cave, NW Transylvania (Romania)

Domenii publicaţii > Ştiinţele pământului şi planetare + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Anca Geantă , Ioan Tanţău , Tudor Tămaş, Vanessa E. Johnston

Editorial: Review of Palaeobotany and Palynology, 2012.

Rezumat:

Pollen analysis of a 270 cm deep guano deposit from Măgurici Cave (NW Romania) was performed to understand
the vegetation dynamics and the influence of deforestation and farming activities that unfolded in the Transyl-
vania area over the past 800 years. The study discusses the value of cave guano as a source of palaeoclimate
data and tests if guano sequences record the same signals as other proxies (tree rings, speleothems, lakes or
peat). The pollen record extracted from Măgurici Cave guano is consistent with the known vegetation history
during the Late Subatlantic period, exhibiting two climate events: the Medieval Climate Anomaly and the Little
Ice Age. Human influence on vegetation is also revealed, especially in modern times, by the decrease of arboreal
pollen, the increase of herbaceous taxa related to grazing and the occurrences of cereals. Cave bat guano is
emphasized as a source of valuable palaeoclimate data, especially in areas where no conventional archives are
available.

Cuvinte cheie: pollen analysis, bat guano, MCA, LIA, Transylvania, Romania

URL: http://www.sciencedirect.com/science/article/pii/S0034666711002077