scholarly journals Análisis polinico de mieles de los Parques Naturales Los Alcornocales y Sierra de Grazalema.

2003 ◽  
Vol 28 ◽  
pp. 79-87
Author(s):  
Anass Terrab ◽  
Cristina Andrés ◽  
María Josefa Díez
Keyword(s):  
Light Microscopy ◽  
Pollen Analysis ◽  
Pollen Grains ◽  
Class Ii ◽  
Class V ◽  
Natural Park ◽  
Natural Parks ◽  
Pollen Types ◽  
Class 1

RESUMEN. Análisis polinico de mieles de los Parques Naturales Los Alcornocales y Sierra de Grazalema. Seha realizado el análisis microscópico de 7 muestras de miel de los Parques Naturales Los Alcornocales y Sierra de Grazalema. Las muestras fueron proporcionadas directamente por los apicultores. Los resultados reflejan que el nectar de las flores es la principal fuente de miel en el territorio y que una muestra pertenece a la Clase I de Maurizio, cinco a la Clase II y una a la Clase V, siendo el número de granos de polen en 10 gr. de miel entre 17.500 y 1.592.700. Se han identificado 41 tipos polínicos, perteneciendo a 17 familias botánicas, resultando dos mieles monoflorales: una de girasol y otra de eucalipto.Palabras clave. Girasol, Eucalipto, Melitopalinología, Parque Natural Los Alcornocales, Parque Natural Sierra de Grazalema.ABSTRACT. Pollen analysis of honeys from the Natural Parks Los Alcornocales and Grazalema Range. Seven honey samples from different localities of The Natural Parks Los Alcornocales and Grazalcma Range have been studied by light microscopy. The results show that the nectar from flowers is the main honey source in the region and that one sample belongs to the Maurizio Class 1, five to the Class II and one to the Class V, with 17.500-1.592.700 pollen grains per 10 honey gram. 41 pollen types were identified belonging to 17 families, and two honey samples are unifloral: one of sunflower and one of eucalyptus.Key words. Sunflower, Eucalyptus, Melissopalynology, Natural Park Los Alcornocales, Natural Park Grazalema Range.

Palynological Studies in Brigalow (Acacia harpophylla F. Muell.) Communities: Pollen Analysis in Gilgai Soil Under the Primary Forest

1975 ◽  
Vol 23 (2) ◽  
pp. 355 ◽  
Author(s):  
WH Litchfield
Keyword(s):  
Pollen Analysis ◽  
Physical Stability ◽  
Pollen Grains ◽  
Primary Forest ◽  
Eucalypt Forest ◽  
Biological Attack ◽  
Pollen Types ◽  
History Of ◽  
Successional Change ◽  
Pollen Preservation

A pollen analysis of acid clays under brigalow is presented. The pollen fluxes in a first pair of soil profiles throw light upon the natural history of one locality as regards both its modern vegetation and the physical stability of gilgai. Fluxes in the relative pollen preservation indicate intensity of biological attack on the exine. In a profile representative of the higher level, preservation is good enough, erosion or fill on a micro-scale so slight, and any vertical down-wash so slow as to show up residual flux variations from successional change. But under this natural canopy, even though there is only a very slow wash of litter and soil down to the bottom of the depression, a faster tempo of decay than any in the higher ground, and physical incorporation down deeper cracks, maintain a balance that prevents accumulation on an almost bare surface. This shows up in deeper penetration of pollen grains, in even the residual pollen types being severely eroded, and in irregular fluxes in which the successional trace is lost. Presumably, old Myrtaceae types have washed out of the soil above. The pollen fluxes indicate a natural replacement of eucalypt forest by brigalow some time before clearing. The expanding fluxes at the immediate surface are taxa from outside the forest, particularly the Chenopodiaceae, that would have become more abundant after clearing. Insight into soil stability comes from the marked contrast in the distribution and the preservation of the pollen grains across the microrelief. The higher level is physically more stable than the bottom of the adjacent depression. Depressions are surprisingly dry in natural forest, but these pollen fluxes suggest that they are occas- ionally the wettest microenvironment.

Pollen morphology of Pacific Northwestern Polemonium species in relation to paleoecology and taxonomy

1979 ◽  
Vol 57 (21) ◽  
pp. 2428-2442 ◽  
Author(s):  
Rolf W. Mathewes
Keyword(s):  
Light Microscopy ◽  
Electron Micrographs ◽  
Pollen Analysis ◽  
Pollen Morphology ◽  
Scanning Electron Micrographs ◽  
Taxonomic Treatment ◽  
Close Affinity ◽  
Pollen Types ◽  
Quaternary Paleoecology ◽  
Scanning Electron

Six morphological types of Polemonium pollen are described, including P. micranthum which is the only taxon considered to be consistently identifiable to species. A key to the pollen types as seen in light microscopy is presented along with light and scanning electron micrographs of each type. The palynological evidence supports the taxonomic treatment of P. uciitiflorum and P. occidentale as subspecies of P. caeruleum, and supports a close affinity between P. pectinatum and P. foliosissimum. Brief summaries of the present-day ecology and distribution of Pacific Northwestern Polemonium species are presented. The application of indicator pollen analysis in Quaternary paleoecology is discussed, with special references to examples of paleoenvironmen-tal inference using Polemonium pollen types.

Pollen morphology of selected species of Lentibulariaceae Rich. from Western Cuba based on light microscopy and its taxonomic implications

Phytotaxa ◽  
2018 ◽  
Vol 350 (2) ◽  
pp. 187
Author(s):  
DASMILIÁ CRUZ ◽  
YOANNIS DOMÍNGUEZ ◽  
CRISTINA M. PANFET VALDÉS ◽  
VITOR F. O. MIRANDA ◽  
EDUARDO CUSTÓDIO GASPARINO
Keyword(s):  
Light Microscopy ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Morphological Variations ◽  
Pollen Types ◽  
Family Level ◽  
Taxonomic Importance ◽  
Taxonomic Implications ◽  
First Time ◽  
Qualitative Characteristics

We present here pollen morphology of 12 native taxa of Lentibulariaceae from Western Cuba with the aim of surveying pollen traits useful for species identification. Pollen grains were studied using light microscopy and scanning electron microscopy to search for new characteristics to contribute to the taxonomy of Lentibulariaceae from western Cuba with the aim of increasing our understanding of pollen morphology. Pollen grains were acetolysed, measured, photographed, and described based on qualitative characteristics. Here we present statistical analyses and multivariate statistics for quantitative data. The pollen grains are medium-sized, isopolar, subprolate to prolate, circular, subcircular to quadrangular amb, zonaperturate, 3-colporate, 4(5)-colporate, (6–)7–18-colporate or porate, lalongate or lolongate endoaperture, or endocingulate in some species. They may also be psilate, psilate-perforate, microreticulate to rugulate exine, and sexine thicker than nexine. Endoaperture with fastigia was reported for Pinguicula ser. Albidae and Lentibulariaceae for the first time in this study. The Utricularia species studied were grouped into three pollen types on the basis of aperture and endoaperture characteristics and shape. Morphological variations observed showed intergeneric pollen diversity in Lentibulariaceae, corroborating the taxonomic importance of such characteristics at a family level.

scholarly journals Pollen morphology of the Myrtaceae. Part 2: tribes Backhousieae, Melaleuceae, Metrosidereae, Osbornieae and Syzygieae

2012 ◽  
Vol 60 (3) ◽  
pp. 200 ◽  
Author(s):  
Andrew H. Thornhill ◽  
Geoff S. Hope ◽  
Lyn A. Craven ◽  
Michael D. Crisp
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Pollen Morphology ◽  
Size Variation ◽  
Pollen Grains ◽  
Pollen Type ◽  
Diagnostic Characters ◽  
Pollen Types ◽  
Scanning Electron

Pollen morphology of 16 genera and 101 species from the Myrtaceae tribes Backhousieae, Melaleuceae, Metrosidereae, Osbornieae and Syzygieae was surveyed using scanning electron microscopy (SEM) and light microscopy (LM). The most common pollen type observed in these tribes was parasyncolpate with arcuate or angular colpi, and a rugulate exine pattern. There was little size variation in observed pollen, except for larger pollen in tribe Melaleuceae. All Metrosideros pollen grains had apocolpial islands, as well as all Callistemon species viewed by LM. Choricarpia of tribe Backhousieae had pollen with a distinctive exine pattern. Dicolporate pollen were observed in two tribes, Metrosidereae (Tepualia) and Syzygieae (Acmena), and may be of systematic value. The dicolporate grains of these two genera were also easily distinguishable from each other by using size and pollen side shape as diagnostic characters. Two pollen types were observed within the genus Melaleuca, and a number of pollen types were observed within the species-rich genus Syzygium.

scholarly journals Análisis polinico de mieles en la región del Pre-Rif Central (noroeste de Marruecos).

2002 ◽  
Vol 27 ◽  
pp. 65-74 ◽  
Author(s):  
Anass Terrab ◽  
Benito Valdés ◽  
María Josefa Díez
Keyword(s):  
Pollen Analysis ◽  
Central Region ◽  
Microscopic Analysis ◽  
Pollen Grains ◽  
High Pollen ◽  
Pollen Types

RESUMEN. Análisis polinico de mieles en la región del Pre-Rif Central (noroeste de Marruecos). Se ha realizado el análisis microscópico de 13 muestras de miel de la región del Pre-Rif Central. Las muestras fueron proporcionadas directamente por los apicultores, todos aficionados. Los resultados reflejan que el néctar de las flores es la principal fuente de miel en el territorio y que cinco muestras presentan una riqueza media de polen, con 93.000-344.000 granos de polen y ocho son ricas o muy ricas, con 522.000-3.600.000 granos de polen. Se han identificado 51 tipos polínicos por el análisis microscópico, resultando una miel monofloral de Eryngium campestre y otra de Carlina sp.Palabras clave. Melitopalinología, Marruecos, Pre-Rif Central, monofloral, Eryngium campestre, Carlina.ABSTRACT. Pollen analysis of honeys from the Pre-Rif Central region (Northwestern Morocco). Thirteen honey samples from Pre-Rif Central region are analysed. The honeys were obtained directly from amateur beekeepers. Results show that nectar is the main source of honey in this territory, and that five samples have medium p011en gathering, with 93.000-344.000 pollen grains and eight have high pollen gathering, with 522.000-3.600.000 pollen grains. A total of 51 pollen types have been identified by microscopic analysis, and two of the honey samples are monofloral, one from Eryngium campestre and one from Carlina sp.Key words. Melissopalynology, Morocco, Central Pre-Rif, unifloral, Eryngium campestre, Carlina.

Pollen Taphonomy in a Canyon Stream

1987 ◽  
Vol 28 (3) ◽  
pp. 393-406 ◽  
Author(s):  
Patricia L. Fall
Keyword(s):  
Surface Soil ◽  
Pollen Grains ◽  
Close Correlation ◽  
Soil Samples ◽  
Alluvial Deposits ◽  
Modern Pollen ◽  
Pollen Types ◽  
Pollen Rain ◽  
Arid Steppe ◽  
Turbulent Water

AbstractSurface soil samples from the forested Chuska Mountains to the arid steppe of the Chinle Valley, Northeastern Arizona, show close correlation between modern pollen rain and vegetation. In contrast, modern alluvium is dominated by Pinus pollen throughout the canyon; it reflects neither the surrounding floodplain nor plateau vegetation. Pollen in surface soils is deposited by wind; pollen grains in alluvium are deposited by a stream as sedimentary particles. Clay-size particles correlate significantly with Pinus, Quercus, and Populus pollen. These pollen types settle, as clay does, in slack water. Chenopodiaceae-Amaranthus, Artemisia, other Tubuliflorae, and indeterminate pollen types correlate with sand-size particles, and are deposited by more turbulent water. Fluctuating pollen frequencies in alluvial deposits are related to sedimentology and do not reflect the local or regional vegetation where the sediments were deposited. Alluvial pollen is unreliable for reconstruction of paleoenvironments.

scholarly journals The history of settlement and agrarian land use in a boreal forest in Värmland, Sweden, new evidence from pollen analysis

2021 ◽  
Author(s):  
Sigrún Dögg Eddudóttir ◽  
Eva Svensson ◽  
Stefan Nilsson ◽  
Anneli Ekblom ◽  
Karl-Johan Lindholm ◽  
...  
Keyword(s):  
Land Use ◽  
Pollen Analysis ◽  
Large Scale ◽  
Pollen Grains ◽  
Ice Age ◽  
Valuable Insight ◽  
Archaeological Survey ◽  
History Of ◽  
New Evidence ◽  
Insight Into

AbstractShielings are the historically known form of transhumance in Scandinavia, where livestock were moved from the farmstead to sites in the outlands for summer grazing. Pollen analysis has provided a valuable insight into the history of shielings. This paper presents a vegetation reconstruction and archaeological survey from the shieling Kårebolssätern in northern Värmland, western Sweden, a renovated shieling that is still operating today. The first evidence of human activities in the area near Kårebolssätern are Hordeum- and Cannabis-type pollen grains occurring from ca. 100 bc. Further signs of human impact are charcoal and sporadic occurrences of apophyte pollen from ca. ad 250 and pollen indicating opening of the canopy ca. ad 570, probably a result of modification of the forest for grazing. A decrease in land use is seen between ad 1000 and 1250, possibly in response to a shift in emphasis towards large scale commodity production in the outlands. Emphasis on bloomery iron production and pitfall hunting may have caused a shift from agrarian shieling activity. The clearest changes in the pollen assemblage indicating grazing and cultivation occur from the mid-thirteenth century, coinciding with wetter climate at the beginning of the Little Ice Age. The earliest occurrences of anthropochores in the record predate those of other shieling sites in Sweden. The pollen analysis reveals evidence of land use that predates the results of the archaeological survey. The study highlights how pollen analysis can reveal vegetation changes where early archaeological remains are obscure.

scholarly journals Nuevas aportaciones al conocimiento de la flora del macizo de la Sierra de Líbar (Málaga-Cádiz, Parques Naturales Sierra de Grazalema y Los Alcornocales). III.

2005 ◽  
Vol 30 ◽  
pp. 215-219
Author(s):  
Manuel Becerra Parra
Keyword(s):  
New Records ◽  
Natural Park ◽  
Natural Parks ◽  
Palabras Clave

New records for the flora of Sierra de Líbar (Sierra de Grazalema and Los Alcornocales natural parks, Málaga and Cádiz provinces)Palabras clave. Flora, Parque Natural, Sierra de Grazalema, Los Alcornocales, Málaga, Cádiz, Sierra de Líbar.Key words. Flora, Natural Park, Sierra de Grazalema, Los Alcornocales, Málaga, Cádiz, Sierra de Líbar.

scholarly journals Airborne pollen observations using a multi-wavelength Raman polarization lidar in Finland: characterization of pure pollen types

2020 ◽  
Author(s):  
Xiaoxia Shang ◽  
Elina Giannakaki ◽  
Stephanie Bohlmann ◽  
Maria Filioglou ◽  
Annika Saarto ◽  
...  
Keyword(s):  
Optical Properties ◽  
Airborne Pollen ◽  
Pollen Grains ◽  
Wavelength Dependence ◽  
Depolarization Ratio ◽  
Mean Values ◽  
Pollen Types ◽  
Pine Pollen ◽  
Significant Wavelength ◽  
532 Nm

Abstract. We present a novel algorithm for characterizing the optical properties of pure pollen particles, based on the depolarization values obtained in lidar measurements. The algorithm was first tested and validated through a simulator, and then applied to the lidar observations during a four-month pollen campaign from May to August 2016 at the European Aerosol Research Lidar Network (EARLINET) station in Kuopio (62°44′ N, 27°33′ E), in Eastern Finland. Twenty types of pollen were observed and identified from concurrent measurements with Burkard sampler; Birch (Betula), pine (Pinus), spruce (Picea) and nettle (Urtica) pollen were most abundant, contributing more than 90 % of total pollen load, regarding number concentrations. Mean values of lidar-derived optical properties in the pollen layer were retrieved for four intense pollination periods (IPPs). Lidar ratios at both 355 and 532 nm ranged from 55 to 70 sr for all pollen types, without significant wavelength-dependence. Enhanced depolarization ratio was found when there were pollen grains in the atmosphere, and even higher depolarization ratio (with mean values of 25 % or 14 %) was observed with presence of the more non-spherical spruce or pine pollen. The depolarization ratio at 532 nm of pure pollen particles was assessed, resulting to 24 ± 3 % and 36 ± 5 % for birch and pine pollen, respectively. Pollen optical properties at 1064 nm and 355 nm were also estimated. The backscatter-related Ångström exponent between 532 and 1064 nm was assessed as ~ 0.8 (~ 0.5) for pure birch (pine) pollen, thus the longer wavelength would be better choice to trace pollen in the air. The pollen depolarization ratio at 355 nm of 17 % and 30 % were found for birch and pine pollen, respectively. The depolarization values show a wavelength dependence for pollen. This can be the key parameter for pollen detection and characterization.

scholarly journals Pollen morphology of the Balkan-Carpathian endemic Campanula lingulata Waldst. & Kit. (Campanulaceae)

2016 ◽  
pp. 75-82
Author(s):  
Marina Macukanovic-Jocic ◽  
Snezana Jaric
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Endemic Species ◽  
Pollen Morphology ◽  
Average Length ◽  
Pollen Grains ◽  
Polar Axis ◽  
First Time ◽  
Scanning Electron

Palynomorphological characteristics of Campanula lingulata, the Balkan-Carpathian endemic species growing in Serbia, have been investigated using light microscopy and scanning electron microscopy for the first time, in order to provide some information helpful for a better understanding of the taxonomic position of this species within the genus, as well as to contribute to the pollen atlas of Serbian apiflora. The pollen grains are radially symmetrical, isopolar, 3-zonoporate and medium-sized monads oblate-sphaeroidal in shape. Mean of the polar axis (P) is 27.6?1.9 ?m, while the average length of the equatorial axis (E) is 28.8?1.6 ?m. The apertures are operculate. The sculpturing pattern of the exine is microre?ticulate-microechinatae. The exine surface is covered with evenly distributed supratectal spinules of variable length and sparse granules. The longest supratectal spinules are 0.64?0.05 ?m in length and the smallest sculptural elements are less than 0.2 ?m high. The microechinae density per sample area of 5 ?m x 5 ?m averages 17.4?2.4.

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