A two-year report of pollen influx into Tauber traps in Mar Chiquita coastal lagoon,Buenos Aires,Argentina |
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Authors: | Claudio F Pérez Fabiana Latorre Silvina Stutz Susana Pastorino |
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Institution: | 1.Departamento de Ciencias de la Atmósfera y los Océanos, Facultad de Ciencias Exactas y Naturales,Universidad de Buenos Aires,Buenos Aires,Argentina;2.CIC and TTP-CONICET,Diamante,Argentina;3.Laboratorio de Paleoecología y Palinología, Departamento de Biología, Facultad de Ciencias Exactas y Naturales,Universidad Nacional de Mar del Plata,Mar del Plata,Argentina;4.CONICET,Buenos Aires,Argentina |
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Abstract: | Modern pollen deposition and its relationship to the surrounding vegetation were studied at a coastal lagoon from the southeast
of Buenos Aires Province (Argentina). Tauber traps were monitored monthly over a 2-year period in a coastal dune barrier,
salt marsh and continental freshwater lake. Pollen deposition exhibited seasonal patterns with maximum values during summer
and a spatial variability of increasing deposition from the coast to inland sites. The pollen spectra suggest that airborne
pollen originates mainly from local vegetation with scarce representation of extraregional sources. Herbaceous pollen predominates,
comprising up to 90% of the total amount with Poaceae, Chenopodiineae and Asteroideae as the main types. Hydrophytic, psammophytic
and extraregional types had little influence on the pollen spectra, generally comprising <5% of the total pollen. Pollen influx–vegetation
abundance discrepancies were explained considering pollination syndrome, spatial distribution and structure of vegetation. |
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Keywords: | Pollen influx Source vegetation Seasonal pattern Tauber trap |
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