Results 41 to 50 of about 10,475 (220)

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

Ancient basketry on the inside: X-ray computed microtomography for the non-destructive assessment of small archaeological monocotyledonous fragments: examples from Southeast Europe

open access: yesHeritage Science, 2021
This study proposes non-destructive assessment instrumentation, the X-ray MicroCT scanning, to evaluate archaeological basketry remains prior to any destructive analysis.
Mila Andonova
doaj   +1 more source

Siwalik plant megafossil diversity in the Eastern Himalayas: A review

open access: yesPlant Diversity, 2023
The Eastern Himalayas are renowned for their high plant diversity. To understand how this modern botanical richness formed, it is critical to investigate past plant biodiversity preserved as fossils throughout the eastern Himalayan Siwalik succession ...
Mahasin Ali Khan   +6 more
doaj   +1 more source

Bee pollen as functional food and environmental bioindicator: current evidence and future challenges

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract Bee pollen (BP), a plant‐derived product collected by honey bees, is increasingly promoted as a functional food due to its content of proteins, essential amino acids, lipids, vitamins, minerals, and bioactive compounds such as polyphenols and flavonoids.
Luigi Parrotta, Stefano Del Duca
wiley   +1 more source

High latitude hydrological changes during the Eocene Thermal Maximum 2 [PDF]

open access: yes, 2014
The Eocene hyperthermals, including the Paleocene-Eocene Thermal Maximum (PETM) and Eocene Thermal Maximum 2 (ETM2), represent extreme global warming events ~56 and 54 million years ago associated with rapid increases in atmospheric greenhouse gas ...
Sluijs, Appy   +5 more
core   +1 more source

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

Macro‐ and micromorphological insights into Iranian Onobrychis subgenus Onobrychis Miller (Fabaceae): exploring fruit traits for taxonomic clarity

open access: yesNordic Journal of Botany, EarlyView.
This study provides a comprehensive examination of fruit morphology and micromorphology characteristics of 28 populations of Onobrychis subgenus Onobrychis taxa from Iran, using both light and scanning electron microscopy. For each trait, 25 replicates were analyzed, encompassing a wide range of qualitative and quantitative traits.
Seyed Mehdi Talebi   +2 more
wiley   +1 more source

Pollen morphology of some taxa of Thlaspi L. sensu lato (Brassicaceae) from Turkey,and its taxonomical importance

open access: yes, 2018
In this study, the pollen morphology of 22 Turkish taxa (12 of which are endemic) of the taxonomically complex genus Thlaspi L. sensu lato was studied with light microscopy (LM) and scanning electron microscopy (SEM).
Mehmet Cengiz Karaismailoğlu   +3 more
core   +1 more source

A seasonality trigger for carbon injection at the Paleocene–Eocene Thermal Maximum [PDF]

open access: yesClimate of the Past, 2014
The Paleocene–Eocene Thermal Maximum (PETM) represents a ~170 kyr episode of anomalous global warmth ~56 Ma ago. The PETM is associated with rapid and massive injections of 13C-depleted carbon into the ocean–atmosphere system reflected as a prominent ...
J. S. Eldrett   +4 more
doaj   +1 more source

Coryphoid palms from the K-Pg boundary of central India and their biogeographical implications: Evidence from megafossil remains

open access: yesPlant Diversity, 2023
Ten palm leaf impressions are documented from the latest Maastrichtian (late Cretaceous) to early Danian (earliest Paleocene) sediments (K-Pg, c. 66–64 Ma) of the Mandla Lobe of the Deccan Inter-trappean Beds, Madhya Pradesh, central India.
Sanchita Kumar   +6 more
doaj   +1 more source

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