Results 21 to 30 of about 33,023 (219)

INTEMPERISMO DECORRENTE DA ACUMULAÇÃO DE SAL E A FORMAÇÃO DE ALVÉOLOS E TAFONI NOS AFLORAMENTOS DAS PRAIAS DE NITERÓI (RIO DE JANEIRO, BRASIL)

open access: yesRevista Brasileira de Geomorfologia, 2013
Afloramentos de granitos e gnaisses nas praias de Niterói (RJ) apresentam morfologias desenvolvidas em decorrência do intemperismo da acumulação de sal na superfície da rocha.
Maria Augusta Martins da Silva   +6 more
doaj   +1 more source

Sedimentary Ancient DNA (sedaDNA) Reveals Fungal Diversity and Environmental Drivers of Community Changes throughout the Holocene in the Present Boreal Lake Lielais Svētiņu (Eastern Latvia)

open access: yesMicroorganisms, 2021
Fungi are ecologically important in several ecosystem processes, yet their community composition, ecophysiological roles, and responses to changing environmental factors in historical sediments are rarely studied. Here we explored ancient fungal DNA from
Liisi Talas   +4 more
doaj   +1 more source

Comparison of two reef sites on the north coast of Jamaica over a 15-year period [PDF]

open access: yes, 2016
This paper compares two reef sites near Discovery Bay, Jamaica, Dairy Bull and Dancing Lady, from 2000 to 2015. At Dairy Bull reef, with low macroalgal cover (8% in 2002 falling to 1% in 2015) and significant number of Diadema antillarum urchins (c.
Crabbe, M. James C.
core   +1 more source

Platinum Group Element Traces of CAMP Volcanism Associated With Low‐Latitude Environmental and Biological Disruptions

open access: yesGeophysical Monograph Series, Page 263-304., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside   +3 more
wiley  

+1 more source

Análisis palinológico preliminar de una turbera holocena del Apakará-tepui (Macizo de Chimantá, Guayana venezolana)

open access: yesCollectanea Botanica, 2011
Análisis palinológico preliminar de una turbera holocena del Apakará-tepui (Macizo de Chimantá, Guayana venezolana).- Este artículo presenta los resultados palinológicos preliminares, a escala de milenios, de una secuencia holocena, desde 8.0 cal kyr BP ...
V. Rull, E. Montoya, S. Nogué, O. Huber
doaj   +1 more source

Testate Amoeba Functional Traits and Their Use in Paleoecology

open access: yesFrontiers in Ecology and Evolution, 2020
This review provides a synthesis of current knowledge on the morphological and functional traits of testate amoebae, a polyphyletic group of protists commonly used as proxies of past hydrological changes in paleoecological investigations from peatland ...
Katarzyna Marcisz   +20 more
doaj   +1 more source

The first report of South American edrioasteroids and the paleoecology and ontogeny of rhenopyrgid echinoderms [PDF]

open access: yes, 2013
A new species of rhenopyrgid edrioasteroid Rhenopyrgus piojoensis sp. nov. is described form the Silurian (Lower Lud− low) Los Espejos Formation in the Precordillera of Argentina.
Heredia, Susana Emma   +3 more
core   +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

Late Miocene to early Pliocene biofacies of Wanganui and Taranaki Basins, New Zealand: Applications to paleoenvironmental and sequence stratigraphic analysis [PDF]

open access: yes, 2004
The Matemateaonga Formation is late Miocene to early Pliocene (upper Tongaporutuan to lower Opoitian New Zealand Stages) in age. The formation comprises chiefly shellbeds, siliciclastic sandstone, and siltstone units and to a lesser extent non-marine and
Beu A. G.   +42 more
core   +2 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

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