Estudio del polen atmosférico y su relación con la vegetación local. La Plata, Argentina.

NITIU, D.S.

Acta Botanica Malacitana

Departamento de Biología Vegetal y publicada por el Servicio de Publicaciones e Intercambio Científico de la Universidad Universidad de Málaga

Lugar: Málaga, españa; Año: 2009 vol. 34 p. 1 - 11

0210 9506

Relationship between the atmospheric pollen and the local vegetation of La Plata city, Argentina. Relación entre el polen atmosférico y la vegetación local de la ciudad de La Plata, Argentina. Daniela S. NITIU Address of autor: Cátedra de Palinología. Facultad de Ciencias Naturales y Museo. Institutos, Cátedras y Laboratorios. Universidad Nacional de La Plata. Calle 64 N°3. 1900. La Plata, Argentina. Address for correspondence: nitiud@uolsinectis.com.ar Abstract: The pollen record in the atmosphere of La Plata city (34° 55´S, 57° 57´W) and its relationship with the arboreal vegetation in the area was analyzed. Sampling was carried out with a Hirst-type spore trap (Lanzoni VPPS 2000) for three years. Arboreal vegetation near was surveyed and were determined fifty-one taxa. Only twenty-four of them were present in the pollen record in the three years. Likewise, eleven pollen types were identified in the monitoring from emission sources located at a longer distance than that of the surveyed area. Based on the Index of Representativeness of the taxa characterized in the pollen cloud, eighteen taxa were located in the underrepresented category: Aesculus sp. L.; Tilia sp. L; Jacaranda sp. Juss.; Robinia sp. L.; Cedrus spp. (D. Don) G.; Betula sp.L.; Liquidambar sp. L.; Ulmus spp. L; Pinus spp. L.; Alnus sp. Humb.; Persea sp. Mill.; Ligustrum sp. Aiton, Juglans sp. L.; Populus sp. L.; Acer sp. L., Phoenix sp. Hort. ex Chabaud, Fraxinus spp. Tourn ex L. and Salix sp. L. Three taxa were located in the equirepresented category: Celtis sp. L.; Morus sp. L.; and Quercus sp. L. Three taxa were located in the overrepresented category: Platanus sp. Mill. ex Muenchh., Ricinus sp. L. and Cupressaceae Rich. ex Bartl. Abundance, distribution and location of these emission sources were determinants of the concentration of each taxon in the cloud. Airborne pollen reflected principality the vegetation of the urban area located near the sampler and pollen transported from medium and long distances was rare.