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1. A 10-year survey of allergenic airborne pollen in the city of Porto (Portugal)

Author:
H. Ribeiro; I. Abreu
Source:
Aerobiologia 2014 v.30 no.3 pp. 333-344
ISSN:
0393-5965
Subject:
Acer; Alnus; Betula; Castanea; Cupressaceae; Myrtaceae; Olea europaea; Pinaceae; Plantago; Platanus; Poaceae; Populus; Quercus; Urticaceae; allergenicity; flowering; grasses; meteorological parameters; pollen; spring; summer; surveys; trees; weeds; Portugal
Abstract:
... Airborne pollen calendars are useful to estimate the flowering season of the different plants as well as to indicate the allergenic potential present in the atmosphere at a given time. In this study, it is presented a 10-year survey of the atmospheric concentration of allergenic pollen types. Airborne pollen was performed, from 2003 to 2012, using a 7-day Hirst-type volumetric trap. The interannua ...
DOI:
10.1007/s10453-014-9331-9

2. A 130 0-year history of vegetation and environmental change at Jan Lake, east-central Alaska

Author:
Lisa J. Carlsonl; Bruce P. Finney
Source:
Holocene v.14 no.6 pp. 818-827
ISSN:
0959-6836
Subject:
Alnus; Betula papyrifera; Picea glauca; Picea mariana; Populus; boreal forests; carbon; fossils; lakes; pollen; radiocarbon dating; radionuclides; sediments; shrubs; stomata; trees; tundra; Alaska; Yukon Territory
Abstract:
... Pollen, stomates and macrofossils were analysed from a 3.63 m sediment core at Jan Lake, eastcentral Alaska, in order to improve spatial resolution of patterns of vegetation history in this region. The chronology was based on 19 AMS ¹⁴C dates on plant macrofossils and concentrated pollen. Zone Jan-I (12400-11 600 yr BP) records a unique herb-tundra pollen assemblage, particularly high in Chenopodi ...
DOI:
10.1191/0959683604hl762rp

3. A 30,000-year pollen record from Mire Kupena, Western Rhodopes Mountains (south Bulgaria)

Author:
Spassimir Tonkov; Maria Lazarova; Elissaveta Bozilova; Dimiter Ivanov; Ian Snowball
Source:
Review of palaeobotany and palynology 2014 v.209 pp. 41-51
ISSN:
0034-6667
Subject:
Abies; Alnus; Amaranthaceae; Artemisia; Betula; Carpinus betulus; Carpinus orientalis; Corylus; Fagus; Holocene epoch; Juniperus; Ostrya; Picea; Pinus peuce; Pinus sylvestris; Quercus; Tilia; Ulmus; afforestation; climate change; cold tolerance; deciduous forests; lakes; landscapes; lowlands; mountains; paleobotany; palynology; pollen; radiocarbon dating; sediments; shrublands; steppes; topography; Bulgaria; Greece
Abstract:
... A palynological study was performed on a 2m thick sediment sequence recovered from Mire Kupena (1356m), a former lake in the Western Rhodopes Mountains (south Bulgaria) and supported by radiocarbon dating. The record extends back to ca. 30,000cal. yrs. BP (Middle Pleniglacial) when the study area was occupied by wooded steppe composed of Pinus sp., Pinus peuce, some Betula, Juniperus, and cold-tol ...
DOI:
10.1016/j.revpalbo.2014.06.002

4. A Comparison of Multiple Allergen Simultaneous Tests Using Allergen-Specific IgE Concentration and Intradermal Skin Tests in Atopic Horses With Pollen Allergy

Author:
Piotr Wilkołek; Marcin Szczepanik; Beata Rodzik; Wiesław Sitkowski; Michał Pluta; Iwona Taszkun; Marcin Gołyński
Source:
Journal of equine veterinary science 2020 v.90 pp. 102992
ISSN:
0737-0806
Subject:
Alnus; Betula; Brassica napus; Corylus; Plantago lanceolata; Secale cereale; allergens; antibodies; disease diagnosis; grasses; hay fever; horses; immunoglobulin E; pollen; pollen season; rye; skin tests; trees; weeds
Abstract:
... Intradermal tests (IDTs) and measurement of specific immunoglobulin E class (sIgE) levels in sera are the most common and reliable methods used in allergological clinical practice. The purpose of this study was to explore the sensitization of pollen allergy in atopic horses with pollinosis and to assess the diagnostic value of the multiple allergen simultaneous tests (MASTs) compared with that of ...
DOI:
10.1016/j.jevs.2020.102992

5. A Landscape Reconstruction Algorithm and pedoanthracological data reveal Late Holocene woodland history in the lowlands of the NE Czech Republic

Author:
Vojtěch Abraham; Jan Novák; Petra Houfková; Libor Petr; Lydie Dudová
Source:
Review of palaeobotany and palynology 2017 v.244 pp. 54-64
ISSN:
0034-6667
Subject:
Abies; Alnus; Fagus; Fraxinus; Holocene epoch; Quercus; Tilia; algorithms; charcoal; forestry; forests; landscapes; lowlands; mountains; pollen; woodlands; Czech Republic
Abstract:
... We aim to obtain composition of the regional vegetation from the pollen record in the high mountains, to use it in the interpretation of the pollen record from the lowlands via a Landscape Reconstruction Algorithm (LRA), and to then compare the pedoanthracological data with the LRA result based on dissimilarity coefficient.We used five pollen sequences from summits of the Eastern Sudetes (NE Czech ...
DOI:
10.1016/j.revpalbo.2017.04.009

6. A Statistical Model to Detect Asymptomatic Infectious Individuals with an Application in the Phytophthora alni-Induced Alder Decline

Author:
Elegbede, Chabi Fabrice; Pierrat, Jean-Claude; Aguayo, Jaime; Husson, Claude; Halkett, Fabien; Marcais, Benoit
Source:
Phytopathology 2010 v.100 no.11 pp. 1262-1269
ISSN:
0031-949X
Subject:
root diseases; mathematical models; disease detection; forest decline; forest trees; Alnus; Phytophthora; signs and symptoms (plants); fungal diseases of plants; dead wood; inoculum density; risk factors; tree diseases; plant pathogenic fungi; statistical analysis; disease surveillance; disease incidence; France
Abstract:
... In some diseases--in particular, tree root infection--stages of infection and inoculum production level and timing are not readily observable because of uncertainty or time lags in symptom appearance. Here, we pose a criterion, based on relative hazard of disease symptoms, to discriminate between healthy and asymptomatic infected individuals. We design a statistical procedure to estimate the crite ...
DOI:
10.1094/PHYTO-05-10-0140

7. A class I hemoglobin gene from Alnus firma functions in symbiotic and nonsymbiotic tissues to detoxify nitric oxide

Author:
Sasakura, F.; Uchiumi, T.; Shimoda, Y.; Suzuki, A.; Takenouchi, K.; Higashi, S.; Abe, M.
Source:
Molecular plant-microbe interactions 2006 v.19 no.4 pp. 441-450
ISSN:
0894-0282
Subject:
Alnus; root nodules; plant proteins; symbiosis; Frankia; DNA libraries; complementary DNA; sequence analysis; gene expression regulation; nitrogenase; nucleotide sequences
DOI:
10.1094/MPMI-19-0441

8. A comparison of sedimentary DNA and pollen from lake sediments in recording vegetation composition at the Siberian treeline

Author:
Bastian Niemeyer; Laura S. Epp; Kathleen R. Stoof‐Leichsenring; Luidmila A. Pestryakova; Ulrike Herzschuh
Source:
Molecular ecology resources 2017 v.17 no.6 pp. e46
ISSN:
1755-098X
Subject:
Alnus; Betula; DNA; DNA barcoding; Larix; Salix; botanical composition; forests; lakes; nucleotide sequences; pollen; pollen analysis; principal component analysis; sediments; surveys; treeline; tundra; Siberia
Abstract:
... Reliable information on past and present vegetation is important to project future changes, especially for rapidly transitioning areas such as the boreal treeline. To study past vegetation, pollen analysis is common, while current vegetation is usually assessed by field surveys. Application of detailed sedimentary DNA (sedDNA) records has the potential to enhance our understanding of vegetation ch ...
DOI:
10.1111/1755-0998.12689

9. A comprehensive investigation of anti-inflammatory diarylheptanoids from the leaves of Alnus formosana

Author:
Yi-Chun Lai; Chien-Kuang Chen; Wan-Wan Lin; Shoei-Sheng Lee
Source:
Phytochemistry 2012 v.73 no. pp. 84-94
ISSN:
0031-9422
Subject:
Alnus; anti-inflammatory activity; cytotoxicity; inhibitory concentration 50; leaves; screening
Abstract:
... This study was aimed to investigate thoroughly the diarylheptanoids in the n-BuOH soluble fraction of leaves of Alnus formosana in order to examine their anti-inflammatory activities. The application of HPLC-SPE-NMR as a preliminary chemical screening led to characterization of eleven compounds. Further separation resulted in isolation of 28 compounds, of which 10 diarylheptanoids and 2-coumaroylx ...
DOI:
10.1016/j.phytochem.2011.02.008
PubMed:
21388646

10. A heuristic classification of woody plants based on contrasting shade and drought strategies

Author:
Liang Wei; Chonggang Xu; Steven Jansen; Hang Zhou; Bradley O Christoffersen; William T Pockman; Richard S Middleton; John D Marshall; Nate G McDowell; David Whitehead
Source:
Tree physiology 2019 v.39 no.5 pp. 767-781
ISSN:
1758-4469
Subject:
Abies; Acer; Alnus; Betula; Juniperus; Picea; Pinus; Populus; Prunus; Salix; cluster analysis; drought; dry environmental conditions; ecological function; embolism; habitats; models; prediction; shade tolerance; species diversity; tree physiology; vegetation; woody plants; xylem
Abstract:
... Woody plants vary in their adaptations to drought and shade. For a better prediction of vegetation responses to drought and shade within dynamic global vegetation models, it is critical to group species into functional types with similar adaptations. One of the key challenges is that the adaptations are generally determined by a large number of plant traits that may not be available for a large nu ...
DOI:
10.1093/treephys/tpy146

11. A lacustrine pollen record from near altitudinal forest limit, Upper Kolyma Region, northeastern Siberia

Author:
Patricia M. Anderson; Anatoly V. Lozhkin; Berta V. Belaya; Olga Yu. Glushkova; Linda B. Brubaker
Source:
Holocene 1997 v.7 no.3 pp. 331-335
ISSN:
0959-6836
Subject:
Alnus; Betula; Larix gmelinii var. gmelinii; Pinus pumila; altitude; autumn; forests; highlands; lakes; mountains; palynology; pollen; sediments; shrubs; snow; summer; temperature; treeline; trees; tundra; understory; watersheds; winter; Siberia
Abstract:
... A sediment core that spans the last c. 15 000 yr BP was raised from Elgennya Lake (62°05'N 149°00'E, 1040 m) which is located near the altitudinal forest limit in the western Annachag Mountains of the Upper Kolyma region, northeastern Siberia. Palynological data indicate the presence of a relatively unpro ductive herb-Salix tundra during full-glacial times. Although Betula shrubs first appeared in ...
DOI:
10.1177/095968369700700309

12. A mild Younger Dryas recorded in southeastern Alaska

Author:
Paul S. Wilcox; Sarah J. Fowell; James F. Baichtal
Source:
Arctic, antarctic, and alpine research 2020 v.52 no.1 pp. 236-247
ISSN:
1938-4246
Subject:
Alnus; Picea sitchensis; Pinus; Tsuga mertensiana; ferns and fern allies; glaciation; palynology; pollen; research; temperature; watersheds; Alaska; Antarctic region; Arctic region
Abstract:
... Palynological and sedimentological analyses of lacustrine cores from Baker Island, located in southeastern Alaska’s Alexander Archipelago, indicate that the beginning of the Younger Dryas chronozone, between approximately 12,900 cal yr BP and approximately 12,600 cal yr BP, was cooler and drier than modern conditions, based on decreases in the percentages of Pinus (pine) and Tsuga mertensiana (mou ...
DOI:
10.1080/15230430.2020.1760504

13. A multi-proxy record of the Last Glacial Maximum and last 14,500 years of paleoenvironmental change at Lone Spruce Pond, southwestern Alaska

Author:
Darrell S. Kaufman; Yarrow Axford; R. Scott Anderson; Scott F. Lamoureux; Daniel E. Schindler; Ian R. Walker; Al Werner
Source:
Journal of paleolimnology 2012 v.48 no.1 pp. 9-26
ISSN:
0921-2728
Subject:
Alnus; Bacillariophyta; Chaoboridae; Chironomidae; Cladocera; air temperature; carbon; carbon dioxide; carbon nitrogen ratio; denitrification; ice; isotopes; lakes; midges; nitrogen; organic matter; phytoplankton; pollen; sediments; shrubs; silica; soil; surface water level; Alaska
Abstract:
... Sediment cores from Lone Spruce Pond (60.007°N, 159.143°W), southwestern Alaska, record paleoenvironmental changes during the global Last Glacial Maximum (LGM), and during the last 14,500 calendar years BP (14.5 cal ka). We analyzed the abundance of organic matter, biogenic silica, carbon, and nitrogen, and the isotope ratios of C and N, magnetic susceptibility, and grain-size distribution of ...
DOI:
10.1007/s10933-012-9607-4

14. A new species and a new record of Diatrypaceae from Panama

Author:
Santiago Chacón; Dorian Dörge; Jascha Weisenborn; Meike Piepenbring
Source:
Mycologia 2013 v.105 no.3 pp. 681-688
ISSN:
1557-2536
Subject:
Alnus acuminata; Diatrype; Eutypella; Guadua angustifolia; ascospores; branches; fungi; internal transcribed spacers; new species; ribosomal DNA; scientific illustration; taxon descriptions; Bermuda; Panama
Abstract:
... Based on opportunistic collections of fungi in Panama, two species of Diatrypaceae (Xylariales) are described and illustrated. One of them, Eutypella semicircularis, found twice on branches probably belonging to Alnus acuminata, is new to science. It differs from known species of Eutypella and Peroneutypa with strongly allantoid or semicircular ascospores, such as E. crustata and P. curvispora, in ...
DOI:
10.3852/12-131

15. A novel hybrid with the nuclear background of Phytophthora alni subsp. alni exhibits a mitochondrial DNA profile characteristic of P. alni subsp. uniformis

Author:
J. Bakonyi; Z. Á. Nagy; T. Érsek
Source:
Acta phytopathologica et entomologica Hungarica 2007 v.42 no.1 pp. 1-7
ISSN:
0238-1249
Subject:
Alnus; DNA primers; Phytophthora; alleles; glucose-6-phosphate isomerase; hybridization; hybrids; isozymes; loci; malate dehydrogenase; mitochondrial DNA; phenotype; random amplified polymorphic DNA technique; root crown; Hungary
Abstract:
... Phytophthora alni is a species hybrid that causes a destructive root and collar rot disease of alders throughout Europe. Its subspecies, P. alni subsp. alni (Paa), P. alni subsp. uniformis (Pau) and P. alni subsp. multiformis (Pam) can be distinguished on the basis of phenotypic and genotypic traits. In this study, we report evidence of an unusual genomic combination of two subspecies occurring in ...
DOI:
10.1556/APhyt.42.2007.1.1

16. A palaeoenvironmental reconstruction (based on palaeobotanical data and diatoms) of the Middle Pleistocene elephant (Palaeoloxodon antiquus) butchery site at Marathousa, Megalopolis, Greece

Author:
M.H. Field; M. Ntinou; G. Tsartsidou; D. van Berge Henegouwen; J. Risberg; V. Tourloukis; N. Thompson; P. Karkanas; E. Panagopoulou; K. Harvati
Source:
Quaternary international 2018 v.497 pp. 108-122
ISSN:
1040-6182
Subject:
Alnus; Arecaceae; Bacillariophyceae; Brasenia schreberi; Salix; aquatic plants; butchering; climatic factors; lacustrine sediments; lignite; paleoecology; sediment deposition; skeleton; swamps; trees; water table; wood; Greece
Abstract:
... Exposures of Middle Pleistocene lacustrine sediments at the margins of an open-cast lignite mine at Marathousa near Megalopolis, western Arcadia, Greece yielded the partial remains of a Palaeoloxodon antiquus skeleton which exhibited signs of being butchered. Sedimentation occurred between ca. 400 and 480 ka. Lithic artefacts were found in close spatial and stratigraphic association with the eleph ...
DOI:
10.1016/j.quaint.2018.06.014

17. A possible middle Pleistocene seasonal deposit in Taipei Basin, Taiwan, inferred from pollen study

Author:
Ping-Mei Liew; Kai-Zheng Du; Ting-Wei Lin; I. Ting; Shu-Yue Huang
Source:
Quaternary international 2014 v.349 pp. 127-134
ISSN:
1040-6182
Subject:
Alnus; Castanopsis; El Nino; Picea; Pinus; Poaceae; Quercus; Tsuga; ancient lakes; atmospheric precipitation; basins; glaciation; illite; pollen; quartz; sediments; summer; Taiwan
Abstract:
... Laminated sediments in the Taipei Basin which are tentatively assigned to the antepenultimate glacial period were studied to discern the paleoclimatic significance. Analyses of multi proxies including pollen, mineralogy, grain size, and loss on ignition (LOI) were carried out on three 50 cm thick intervals of a 23.7 m thick laminated section of the Hsinchuan Core, western Taipei. The couplets are ...
DOI:
10.1016/j.quaint.2013.08.056

18. A revision of the Alpova diplophloeus complex in North America

Author:
Jeremy Hayward; Samuel G. Tourtellot; Thomas R. Horton
Source:
Mycologia 2014 v.106 no.4 pp. 846-855
ISSN:
1557-2536
Subject:
Alnus; Alpova; Rhizopogon; basidiomata; ectomycorrhizae; new species; polyphyly; North America
Abstract:
... Alpova diplophloeus (Boletales, Paxillaceae) is the only currently recognized Alpova in North America with a brownish peridium, large gleba chambers and which forms ectomycorrhizas with Alnus. However, A. diplophloeus as currently circumscribed is a polyphyletic species, with at least three distinct genetic entities. Using a combination of molecular and morphological characters, we examined the ty ...
DOI:
10.3852/13-360

19. A short-term climate oscillation during the Holsteinian interglacial (MIS 11c): An analogy to the 8.2ka climatic event?

Author:
Andreas Koutsodendris; Jörg Pross; Ulrich C. Müller; Achim Brauer; William J. Fletcher; Norbert Kühl; Emiliya Kirilova; Florence T.M. Verhagen; Andreas Lücke; André F. Lotter
Source:
Global and planetary change 2012 v.92-93 no. pp. 224-235
ISSN:
0921-8181
Subject:
Alnus; Bacillariophyceae; Betula; Pinus; aquatic ecosystems; climate; climate change; cold; herbs; isotopes; lakes; latitude; oxygen; pollen; sediments; silica; snowmelt; solar radiation; summer; temperature; terrestrial ecosystems; trees; vegetation; winter; British Isles; Germany; Poland
Abstract:
... To gain insights into the mechanisms of abrupt climate change within interglacials, we have examined the characteristics and spatial extent of a prominent, climatically induced vegetation setback during the Holsteinian interglacial (Marine Isotope Stage 11c). Based on analyses of pollen and varves of lake sediments from Dethlingen (northern Germany), this climatic oscillation, here termed the “Old ...
DOI:
10.1016/j.gloplacha.2012.05.011

20. A systematic review of threshold values of pollen concentrations for symptoms of allergy

Author:
Nadine Steckling-Muschack; Hanna Mertes; Isabella Mittermeier; Paul Schutzmeier; Jana Becker; Karl-Christian Bergmann; Stephan Böse-O′Reilly; Jeroen Buters; Athanasios Damialis; Joachim Heinrich; Michael Kabesch; Dennis Nowak; Sandra Walser-Reichenbach; Alisa Weinberger; Mihai Zamfir; Caroline Herr; Susanne Kutzora; Stefanie Heinze
Source:
Aerobiologia 2021 v.37 no.3 pp. 395-424
ISSN:
0393-5965
Subject:
Alnus; Ambrosia; Artemisia vulgaris; Betula; Corylus; Fraxinus; allergens; drugs; gender; hypersensitivity; pollen; risk; systematic review
Abstract:
... Pollen threshold values used in public warning systems are intended to inform people of the risk of developing allergy symptoms. However, there is no consensus about which pollen concentrations provoke allergy symptoms. The aim of this systematic review was the evaluation of studies investigating the relationship between pollen concentrations (alder, ash, birch, hazel, mugwort and ragweed) and the ...
DOI:
10.1007/s10453-021-09709-4