2026-09-21T01:18:54Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/29672 2023-07-10 col_2142_5131 col_2142_16341 com_2142_5130 com_2142_8913 com_2142_8903

Punyasena, Surangi W. Haselhorst, Derek 2012-02-06T20:10:13Z 2012-02-06T20:10:13Z 2011-12 2012-02-06T20:10:13Z 2011-12 The effect of seasonal and multiannual environmental variability on the abundance and composition of Neotropical pollen rain was investigated using ten years of seasonal aerial pollen samples from Barro Colorado Island (BCI), Panama. Using canonical correspondence analysis, we identified the environmental variables that most account for intra-annual and inter-annual variability in tropical pollen production and found that pollen rain samples effectively captured the strong seasonality and stratification of pollen flow within the forest canopy. Inter-annual variation in pollen rain composition varied most strongly with the preceding year’s precipitation, with a smaller secondary effect of the current year’s temperature and photosynthetically active radiation (PAR). Our results demonstrate the relative stability of the long-term pollen rain as a larger regional signal of flowering response to climatic variability, while also suggesting that paleoecological interpretations of modern pollen assemblages need to adjust for skewed short-term variability in pollen influx from neighboring pollen taxa. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2011-12-06T15:02:35Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Haselhorst_Derek.doc: 32137832 bytes, checksum: 57af1f830ea45ae639a83f99d370611a (MD5) Haselhorst_Derek.pdf: 25105737 bytes, checksum: ad9584630c98878c0a4dcad6a88c534e (MD5) Made available in DSpace on 2012-02-06T20:10:13Z (GMT). No. of bitstreams: 3 Haselhorst_Derek.pdf: 25105737 bytes, checksum: ad9584630c98878c0a4dcad6a88c534e (MD5) license.txt: 4066 bytes, checksum: d2c307cf8f491d4fa2d4aa48c11b1114 (MD5) Haselhorst_Derek.doc: 32137832 bytes, checksum: 57af1f830ea45ae639a83f99d370611a (MD5) http://hdl.handle.net/2142/29672 en Copyright 2011 Derek Haselhorst Barro Colorado Island climate palynology Panama phenology plant reproduction seasonality Variability within the 10-year pollen rain of a seasonal neotropical forest Dissertation / Thesis text School of Integrative Biology 1383 Ecol, Evol, Conservation Biol 5107 University of Illinois at Urbana-Champaign Thesis M.S. MS: Ecol, Evol, Cons Bio -UIUC 10KS5107MS