Results 41 to 50 of about 30,339 (229)

Biodiversidad, montañas y cambio climático

open access: yesCollectanea Botanica, 2014
En este artículo se discute el origen y mantenimiento de la biodiversidad en las montañas tropicales, con énfasis en el Neotrópico, y se concluye que los patrones de biodiversidad de las biotas de gran altura no pueden ser explicados sin la acción ...
V. Rull
doaj   +1 more source

PALEOENVIRONMENTS RECONSTRUCTED FROM THE ANALYSES OF LOESS SEQUENCES ON SUSAK ISLAND, ADRIATIC SEA [PDF]

open access: yesActa Geographica Debrecina. Landscape & Environment Series, 2017
Susak Island is the outermost member of the archipelago of the Kvarner Bay, North Adriatic Sea, Croatia. Its long-term landscape evolution is defined by tectonic movements.
ÉVA KIS   +2 more
doaj   +1 more source

Effect of volcanic dykes on coastal groundwater flow and saltwater intrusion : a field-scale multiphysics approach and parameter evaluation [PDF]

open access: yes, 2017
Acknowledgments This research was primarily based on research grant‐aided by the Irish Department of Communications, Energy and Natural Resources under the National Geoscience Programme 2007–2013.
A. González-Quirós   +79 more
core   +3 more sources

Paleoecología ecológica: Un eslabón perdido entre ecología y evolución

open access: yesCollectanea Botanica, 2014
La paleoecología es más que una disciplina ambiental, ya que proporciona las evidencias empíricas necesarias para verificar hipótesis ecológicas y contribuye a una mejor comprensión de la interfase ecología-evolución.
V. Rull
doaj   +1 more source

Geochemical support for a climbing habit within the Paleozoic seed fern genus Medullosa [PDF]

open access: yes, 2011
A long-standing problem in paleobotany is the accurate identification of the growth habits and statures of fossil plants. Tissue-specific analysis of stable carbon isotope ratios in plant fossils can provide an independent perspective on this issue ...
Fischer, Woodward W.   +1 more
core   +2 more sources

The Paleoecology of Microplastic Contamination

open access: yesFrontiers in Environmental Science, 2020
While the ubiquity and rising abundance of microplastic contamination is becoming increasingly well-known, there is very little empirical data for the scale of their historical inputs to the environment. For many pollutants, where long-term monitoring is
Chiara E. P. Bancone   +3 more
doaj   +1 more source

Population structure of graptolite assemblages [PDF]

open access: yes, 1998
Graptolite rhabdosomes display a diverse suite of morphologies. The range of morphotypes present within most moderate to high diversity assemblages from the Ordovician and Silurian is similar, despite the different taxonomic composition of the faunas at ...
Brenchley   +27 more
core   +1 more source

The bivalve-bearing carbonate platform on the east Tethys during the middle Eocene and its response to the Tethys transgression

open access: yesFrontiers in Earth Science
The Eocene was a typical greenhouse climate period in the history of the Earth, with a high global sea level and extensive carbonate deposits developed in Tethys.
Shaobo Fang   +8 more
doaj   +1 more source

Prompt rewetting of drained peatlands reduces climate warming despite methane emissions

open access: yesNature Communications, 2020
Peatlands are strategic areas for climate change mitigation because of their matchless carbon stocks. Drained peatlands release this carbon to the atmosphere as carbon dioxide (CO2).
Anke Günther   +6 more
doaj   +1 more source

An Interactive Game Approach to Learning in Historical Geology and Paleontology [PDF]

open access: yes, 2001
This article describes an interactive game that can be used in conjunction with traditional laboratory work, group discussions, student presentations, and writing exercises.
Anne Gardulski, Robert Reuss
core   +1 more source

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