Results 11 to 20 of about 3,738 (129)

First palynologic record of the Cretaceous La Yesera Formation (Salta Group), northwestern Argentina [PDF]

open access: yes, 2014
Thirty-four taxa were documented from six palynologically productive samples of the La Yesera Formation (Brealito and Don Bartolo Members) in the Pucará locality (Salta Province, northwestern Argentina).
Narvaez, Paula Liliana   +2 more
core   +1 more source

Steppes, savannahs, forests and phytodiversity reservoirs during the Pleistocene in the Iberian Peninsula [PDF]

open access: yes, 2010
A palaeobotanical analysis of the Pleistocene floras and vegetation in the Iberian Peninsula shows the existence of patched landscapes with Pinus woodlands, deciduous and mixed forests, parklands (savannah-like), shrublands, steppes and grasslands ...
Agustí   +259 more
core   +3 more sources

Quaternário: cienciometria e mapeamento dos estudos palinológicos do bioma cerrado e importância para arqueologia

open access: yesGeosul, 2019
As mudanças do Cerrado ao longo do tempo, influenciadas por fatores antrópicos, naturais ou por mudanças climáticas, são determinantes na disposição da paisagem.
Gabriela Paola Aguiar Silva   +1 more
doaj   +1 more source

Past and present potential distribution of the Iberian Abies species: A phytogeographic approach using pollen data and species distribution models [PDF]

open access: yes, 2010
This is the accepted version of the following article: Alba-Sánchez, F., López-Sáez, J. A., Pando, B. B.-d., Linares, J. C., Nieto-Lugilde, D. and López-Merino, L.
Benito de Pando, B   +4 more
core   +1 more source

Catálogo polínico de plantas usadas por tres abejorros del género Bombus (Hymenoptera: Apidae) en la Cordillera Oriental de los Andes colombianos

open access: yesEcología Austral, 2022
En América del Sur se reportan más de 20 especies de abejorros, nueve de ellas en la Cordillera Oriental de los Andes colombianos. Se las conoce como polinizadores importantes, pero su distribución fue disminuyendo debido al creciente cambio en el uso ...
Paola Alarcón   +5 more
doaj   +1 more source

Palinología del Neógeno de la cuenca del Duero. Castrillo del Val (Burgos)

open access: yesEstudios Geologicos, 1985
De las investigaciones palinológicas realizadas en el afloramiento terciario de Castrillo del Val (Burgos) cabe reseñar: Un dominio absoluto de las Gymnospermas, Destaca Pinus tipo haploxylon ligeramente sobre Pinus tipo diploxylon, asimismo Cupressaceae-
Mª F. Valle Hernández   +1 more
doaj   +1 more source

Pollen Sources for Melipona capixaba Moure & Camargo: An Endangered Brazilian Stingless Bee

open access: yesPsyche: A Journal of Entomology, Volume 2011, Issue 1, 2011., 2011
Pollen samples were collected in three different periods from 11 Melipona capixaba Moure & Camargo hives and analyzed with melissopalynological methodology. A total of 33 pollen types were identified, of which 23 genera and 15 families were identified. The following families showed the highest pollen richness: Fabaceae (7), Myrtaceae (3), Solanaceae (3)
Cynthia Fernandes Pinto da Luz   +6 more
wiley   +1 more source

Floral Resources and Nesting Requirements of the Ground‐Nesting Social Bee, Lasioglossum malachurum (Hymenoptera: Halictidae), in a Mediterranean Semiagricultural Landscape

open access: yesPsyche: A Journal of Entomology, Volume 2010, Issue 1, 2010., 2010
In order to adopt correct conservation strike plans to maintain bee pollination activity it is necessary to know the species′ resource utilisation and requirements. We investigated the floral resources and the nesting requirements of the eusocial bee Lasioglossum malachurum Kirby at various sites in a Mediterranean landscape.
Carlo Polidori   +5 more
wiley   +1 more source

Additional systematic information on the Early Carboniferous palynoflora from the Ambo Formation, Pongo de Mainique, Peru [PDF]

open access: yes, 2006
Palynologic results presented in this contribution come from six productive samples located in the upper part of the Ambo Formation at Pongo de Mainique, Peru.
Azcuy, Carlos Leopoldo   +1 more
core   +1 more source

Microlobiusxylon paranaensis gen. et sp. nov. (fabaceae, mimosoideae) from the pliocene-pleistocene of ituzaingó formation, paraná basin, Argentina [PDF]

open access: yes, 2010
A fossil wood with Fabaceae affinity from the Pliocene-Pleistocene sediments of Ituzaingó Formation is described. The silicified wood was collected at the Toma Vieja fossil locality, Paraná Basin, Argentina.
Brea, Mariana, Franco, María Jimena
core   +1 more source

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