Gosling, William D.; Mayle, Francis E.; Tate, Nicholas J. and Killeen, Timothy J.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/doi:10.1016/j.yqres.2005.08.008|
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The paucity of modern pollen-rain data from Amazonia constitutes a significant barrier to understanding the Late Quaternary vegetation history of this globally important tropical forest region. Here, we present the first modern pollen-rain data for tall terra firme moist evergreen Amazon forest, collected between 1999 and 2001 from artificial pollen traps within a 500 x 20 m permanent study plot (14 degrees 34'50"S, 60 degrees 49'48"W) in Noel Kempff Mercado National Park (NE Bolivia). Spearman's rank correlations were performed to assess the extent of spatial and inter-annual variability in the pollen rain, whilst statistically distinctive taxa were identified using Principal Components Analysis (PCA). Comparisons with the floristic and basal area data of the plot (stems >= 10 cm d.b.h.) enabled the degree to which taxa are over/under-represented in the pollen rain to be assessed (using R-rel values). Moraceae/Urticaceae dominates the pollen rain (64% median abundance) and is also an important constituent of the vegetation, accounting for 16% of stems >= 10 cm d.b.h. and ca. 11% of the total basal area. Other important pollen taxa are Arecaceae (cf. Euterpe), Melastomataceae/Combretaceae, Cecropia, Didymopanax, Celtis, and Alchornea. However, 75% of stems and 67% of the total basal area of the plot >= 10 em d.b.h. belong to species which are unidentified in the pollen rain, the most important of which are Phenakospermum guianensis (a banana-like herb) and the key canopy-emergent trees, Erisma uncinatum and Qualea paraensis.
|Item Type:||Journal Article|
|Copyright Holders:||2005 University of Washington|
|Funders:||British Ecological Society, Royal Society, National Geographic Society, Quaternary Research Association|
|Keywords:||moist evergreen forest; modern pollen rain; Amazon; Bolivia; neotropics; pollen trap; Moraceae/Urticaceae|
|Academic Unit/Department:||Science > Environment, Earth and Ecosystems|
|Interdisciplinary Research Centre:||OpenSpace Research Centre (OSRC)
Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
|Depositing User:||Colin Smith|
|Date Deposited:||11 Sep 2009 13:19|
|Last Modified:||02 Dec 2010 20:37|
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