Results 81 to 90 of about 6,775 (249)

Changing climates and environments within the complex Middle to Late Pleistocene fill of an overdeepened valley at Niederweningen, Switzerland

open access: yesBoreas, EarlyView.
Glacially overdeepened valleys in the northern Alpine Foreland preserve Middle to Late Pleistocene sedimentary sequences that may serve as valuable archives for reconstructing past environmental changes in response to shifts in climate. This study presents a multidisciplinary analysis of two sediment cores from the overdeepened Wehntal Valley at ...
Johannes M. Miocic   +8 more
wiley   +1 more source

Alkane Distribution And Chemotaxonomy Of Tree Ferns (Cyatheaceae) [PDF]

open access: yes, 1972
A gas chromatographic study was made of the total n-alkane content of several species of Central American tree ferns (Cyatheaceae). Some species of commonly occuring North American ferns were also studied for comparison. The species studied exhibited the
NC DOCKS at Appalachian State University   +1 more
core  

Current and future tree ferns distribution and diversity patterns in subtropical Atlantic Forest

open access: yes, 2020
In "sp_data.csv" file, we gathered 1,167 tree ferns records related to 15 species, from the literature and herbaria (using SpeciesLink - http://splink.cria.org and GBIF Global Biodiversity Information Facility - https://www.gbif.org).
Rodrigues, Arthur Vinicius   +4 more
core   +1 more source

Towards an ‘absolute’ timing of biostratigraphic and environmental phases from the Saalian late glacial to the Weichselian pleniglacial in central Europe—Insights from a lacustrine succession in Lichtenberg, northern Germany

open access: yesBoreas, EarlyView.
Palynological records are central to the biostratigraphic subdivision of the Late Pleistocene in central Europe. Yet many interglacial and interstadial phases—such as the Eemian, Brörup and Odderade—remain only poorly constrained in time due to limited numerical dating.
Michael Hein   +19 more
wiley   +1 more source

Tree ferns on top of Evelyn Valley, Pirie forest

open access: yes, 1960
Caption: "Tree ferns on top of Evelyn Valley, Pirie forest. Below forest station. March 1960.
Skead, C J (Cuthbert John)
core   +1 more source

PTERIDOFITAS EPIFITAS ENCONTRADAS EN CYATHEACEAE Y DICKSONIACEAE DE LOS BOSQUES NUBLADOS DE VENEZUELA EPIPHYTIC PTERIDOPHYTES FOUND IN THE CYATHEACEAE AND DICKSONIACEAE FROM CLOUD FORESTS OF VENEZUELA

open access: yesGayana: Botanica, 2001
Se presenta una clave de los géneros y una lista de las especies de Pteridofitas que crecen como epífitas en las raíces y tallos de los helechos arborescentes de las familias Cyatheaceae y Dicksoniaceae, en los bosques nublados de VenezuelaA checklist ...
Lucía Cortez
doaj  

Animal Teachers: Nonhuman Pedagogy and the Question of Deceit

open access: yesEducational Theory, EarlyView.
Abstract Animals as “teachers” of human children and adults is a recurring theme in children's literature, in anthropological accounts of “feral children,” as well as in contemporary practices of animal‐assisted pedagogy, philosophical research, wildlife documentaries, and popular culture.
Helena Pedersen
wiley   +1 more source

Fruiting of the Maidenhair-fern Tree

open access: yesJournal of the New York Botanical Garden, 1924
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Observations on cultivated ferns: the hardy species of tree ferns (Dicksonia and Cyatheaceae

open access: yes, 1960
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Tryon, Rolla M. (Rolla Milton)   +1 more
openaire   +2 more sources

Extreme weather and economic crisis in the 1430s in England, and the implications for tenurial change

open access: yesThe Economic History Review, EarlyView.
Abstract The 1430s were characterized by extreme weather conditions, food and fodder shortages, and high mortalities among animals and humans, although the severity of events and their consequences in England have received limited attention. The economic downturn and the depressed customary land market in this decade marked the beginning of the Great ...
Mark Bailey
wiley   +1 more source

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