Laboratorio Of Palinologia

Canoas, Brazil

Laboratorio Of Palinologia

Canoas, Brazil
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Dantas M.A.T.,UFS | Bauermann S.G.,Laboratorio Of Palinologia | Prata A.P.N.,Laboratorio Of Sistematica Vegetal | Cozzuol M.A.,Federal University of Minas Gerais | And 3 more authors.
Revista Brasileira de Paleontologia | Year: 2011

The Sergipe State is included in the Intertropical Region of Brazil (= IRB), and its fauna of large (biomass > 44 kg) and megamammals (biomass > 1000 kg) is still unknown. This paper reports three taxa for Fazenda Charco locality: Toxodon platensis Owen, Smilodon populator Lund, and Pachyarmatherium brasiliense Porpino, Fernicola & Bergqvist; the latter constitutes the first record for this northeastern state of Brazil. Ages for the three faunal localities (Fazenda Elefante, Gararu Municipality; Fazenda Charco and Fazenda São José, Poço Redondo Municipality) are estimated between 50,000 and 38,000 years BP, and this period of time includes two different climates. Finally, the present authors are engaged in an ongoing project to elucidate in more detail the ecology of the species found in the IRB. © 2011 by the Sociedade Brasileira de Paleontologia.

De La Luz Cid-Del Prado M.,Clinica de Asma | Piedras-Gutierrez B.,Laboratorio Of Palinologia | Visoso-Salgado A.,National Autonomous University of Mexico | Becerril-Angeles M.,Hospital Of Especialidades
Revista Alergia Mexico | Year: 2015

Background: Due to the high incidence of allergic diseases in Mexico, caused by exposure to pollens, there have been several studies of plants and atmospheric pollens in various regions in the last decades. In the city of Toluca there have been two previous pollen samplings using gravimetric methodology, for which it is necessary to obtain new samplings with a standardized volumetric technique, in order to have updated and confident results of a region with considerable environmental changes in the last years. Objective: To determine the different types of pollens, seasonal variations and behavior in the four seasons of the year. Material and method: A descriptive study, related to the identification of pollens by the suction and trapping of particles with the volumetric sampler type Hirst (Burkard) performed in the city of Toluca, Mexico, from October 1, 2004 to September 30, 2005. Results: Twenty-nine different airborne pollen types were identified, which amounted a total of 13,542 pollen grains. During winter we found the largest number of pollens. The months with the highest and lowest amount of pollens were January and August, respectively. Pollens from trees predominated, mainly from the Cupressaceae (44%) and Pinaceae (13.8%) families, which were present in the atmosphere throughout the year. Conclusions: We identified a larger amount of pollens from trees in winter, mainly from the Cupressaceae family, and it is closely related to the number of trees planted of this species in the city. © Indice Mexicano de Revistas Biomédicas Latinoamericanas 1998-2015.

This paper presents palynological results from an outcropping section located in the Brazilian side of the Quaraí river (30°16’27.9”S/57°26’33.6”W), south of the Barra do Quaraí city, westernmost portion of the Rio Grande Sul State, as well as from 15 surface samples collected in the ‘Parque do Espinilho’ (PESP), in order to obtain current pollen spectrum. A total of 81 types of palynomorphs (pollen and non pollen) was identified in the ten fertile samples from the outcropping section and 114 taxa from surface samples. Pollen diagrams were performed in order to identify current pollen spectrum and reconstruct the vegetational history of the “Savana Estépica Parque” during the late Holocene in this region, supported by radiocarbonic datings and granulometry analysis. Results indicate that between 3,380 ± 25 and 2,350 ± 2514C yr BP, area was composed by a floodplain covered with grasses that formed bodies of water with little depth enabling the development of algae colonies. Between 2,328 and 2,262 yr BP (interpolated age) occurred a decrease in humidity and the temperature rise, as suggested by the disappearance of algae and the bryophytes increasing. Between 2,130 (interpolated age) and 1,940 ± 2014C yr BP was recorded an increasing of the humidity, reflected by the high diversity of arboreal taxa, with expansion of the “Mata Ciliar”. Granulometrical data corroborate palynological results. Pollen spectra of surface samples reflected the different current vegetation types of the PESP. © 2014 by the Sociedade Brasileira de Paleontologia.

Sanchez A.C.,Laboratorio Of Palinologia | Lupo L.C.,Laboratorio Of Palinologia | Lupo L.C.,National University of Jujuy
Boletin de la Sociedad Argentina de Botanica | Year: 2011

This is the first contribution to the knowledge of botanical and geographical origin of honey from the Province of Jujuy. Twenty-four samples were analyzed from the locality of El Fuerte, Santa Bárbara Department. Fifty pollen types were identified belonging to thirty-two botanical families, were registering a 33% honey unifloral and 67% multifloral honey. Include the following pollen types: Gleditsia amorphoides, Myrtaceae and Scutia-Condalia, accompanied by Allophylus edulis, Parapiptadenia excelsa, Schinus sp y Zanthoxylum coco. The pollen spectrum obtained characterized these honeys and reflects the native vegetation: ecotone between the Selva Montana of the Yungas and Chaco Serrano.

Tores G.R.,Laboratorio Of Palinologia | Tores G.R.,CONICET | Flores F.F.,Laboratorio Of Palinologia | Flores F.F.,CONICET
Revista del Museo Argentino de Ciencias Naturales, Nueva Serie | Year: 2013

We studied the airborne pollen content during the spring of 2007 in the San Salvador de Jujuy city with the aim to record the qualitative composition, describe the weekly percentual variation of capture pollen, and the evaluation of the representativity of the regional native flora and presence of allergenic pollen. The sampling was carried out with a gravimetric Durham trap, with a weekly change of the samples. We identified 36 pollen types of which 17 belong to the exotic vegetation, 14 to the native vegetation from the Yungas forest and 5 of indefinite origin. The report shows that, during the sampled period, the airborne pollen content is influenced by the urban vegetation as also the significant contribution of arboreal plants from the native Yungas forest, such as Alnus acuminata, Juglans australis, Celtis sp., Anadenanthera colubrina, among others, while at the end of season the herbaceous pollen are predominant, mainly Amaranthaceae-Chenopodiaceae and Urticaceae. Of the total of pollen types registered, 16 are identified to have allergenic potential; they belong to exotic species present in the urban trees, such as Morus sp., Cupressus sp., Populus sp., Platanus acerifolia, among others, and Celtis sp. of the native flora. The obtained result represents the first aeropalynological study for the San Salvador de Jujuy city.

Burgos M.G.,Laboratorio Of Palinologia | Sanchez A.C.,Laboratorio Of Palinologia | Sanchez A.C.,National University of Jujuy
Boletin de la Sociedad Argentina de Botanica | Year: 2014

Food preferences in immature honey of Apis mellifera in Chaco Serrano (Jujuy, Argentina). This work is part of a study of food resources used by Apis mellifera in the Chaco Serrano District in the Province of Jujuy. We present the results of melissopalynologic analyses performed to immature honey samples taken throughout a production cycle in two apiaries: Finca Doña Hermes (El Pongo) and Apiary Watraymiski (Severino). The samples were processed according to standard methodology. For the El Pongo 57 pollen types were registered, while 59 were identified for Severino. According to the origin of the types found, the elements corresponding to the transition between the Yungas and Chaco and related with human activities are highlighted, being was found as dominant: Mimosa xanthocentra, Parapiptadenia excelsa, Salix humboldtiana, Rapistrum rugosum and Anadenanthera colubrina var. cebil.

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