Results 91 to 100 of about 9,033 (210)

Cambios en la vegetación durante el Holoceno en la región Norte del Iberá, Corrientes, Argentina

open access: yesRevista de Biología Tropical, 2011
Los humedales son sitios de gran importancia para los estudios palinológicos, ya que representan uno de los ambientes más idóneos para la preservación del polen fósil.
Lionel Fernández Pacella   +2 more
doaj  

Middle to Late Holocene Variations in Salinity and Primary Productivity in the Central Baltic Sea: A Multiproxy Study From the Landsort Deep

open access: yesFrontiers in Marine Science, 2019
Anthropogenic forcing has led to an increased extent of hypoxic bottom areas in the Baltic Sea during recent decades. The Baltic Sea ecosystem is naturally prone to the development of hypoxic conditions due to its geographical, hydrographical, geological,
Falkje van Wirdum   +9 more
doaj   +1 more source

The White Stone Band of the Kimmeridge Clay Formation, an integrated high resolution approach to understanding environmental change

open access: yes, 2004
The Kimmeridge Clay is a Jurassic mudrock succession that shows Milankovitch Band climatic cyclicity. A key issue is to determine how the subtle changes that define this cyclicity result from climatic change.
Kemp, A.E.S.   +2 more
core  

Fern spore dispersal: A methodological review and experimental field study

open access: yesApplications in Plant Sciences, Volume 14, Issue 1, January-February 2026.
Abstract Spore dispersal is one of the most important but perhaps the least investigated and understood processes in determining the geographical distribution of fern species. After a methodological review of the aerobiology of fern spores, we examined the impact of spore characteristics and meteorological factors on their airborne dispersal.
Felipe Gómez‐Noguez   +6 more
wiley   +1 more source

Palynofloras of the Chigua (Devonian) and Malimán (Mississippian) formations from the Precordillera Argentina: age, correlation and discussion of the D/C boundary [PDF]

open access: yes, 2009
Se presenta el análisis cualitativo y cuantitativo de las asociaciones palinológicas obtenidas de las formaciones Chigua (Devónico) y Malimán (Mississippiano), aflorantes en la Cuenca Río Blanco, Precordillera Argentina.
Azcuy, Carlos Leopoldo   +2 more
core  

Comment on “Bilaterian Burrows and Grazing Behavior at >585 Million Years Ago” [PDF]

open access: yes, 2013
Pecoits et al. (Reports, 29 June 2012, p. 1693) describe bilaterian trace fossils and assign them an Ediacaran age based on the age of a granite interpreted as intrusive.
Beri, Angeles   +4 more
core   +2 more sources

Vegetation cycles in a disturbed sequence around the Cobb-Mountain subchron in Catalonia [PDF]

open access: yes, 2008
A 52 m-long lacustrine sequence has been recovered from the basin of Bòbila-Ordis, near Banyoles (N-E Spain). The presence of Early Biharian rodent teeth (Early Pleistocene) and of a c.
Leroy, SAG
core  

Palynological zonation of oligocene to early miocene sediments of greater Ughelli Depobelt, Niger Delta Basin

open access: yesJournal of Applied Sciences and Environmental Management, 2018
Palynological zonation of Oligocene to Early Miocene sediments of Greater Ughelli Depobelt Niger Delta Basin was carried out using One hundred and ninety (190) ditch cutting samples ranging from 20ft.-11,820ft.
F.A. Lucas, T.J. Fregene
doaj   +1 more source

Palynological evidence for Campanian-Maastrichtian age and transitional marine environment of the Patti formation, Ahoko, southern Bida Basin, Nigeria

open access: yesDiscover Geoscience
A palynological study of fourteen road cut samples from the Patti Formation in Ahoko, southern Bida Basin (along the Lokoja-Abuja Expressway), was conducted to determine the age, biozone, and depositional environment of the sedimentary succession ...
Olubusayo Akinyele Olatunji   +4 more
doaj   +1 more source

Exploring the micromorphological diversity of palynomorphic flora from lesser Himalaya biodiversity hotspot

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca
Palynology, a prominent field in plant systematics and biodiversity studies, plays a vital role in identifying and determining the plant species present in a specific region.
Kainat KANWAL   +14 more
doaj   +1 more source

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