Results 71 to 80 of about 10,475 (220)

Image Databases for Pollen Grain Classification: Availability, Quality, and Challenges

open access: yesWIREs Data Mining and Knowledge Discovery, Volume 16, Issue 3, September 2026.
Overview of the study process, from identifying gaps in pollen image databases to a systematic search across six libraries, resulting in 73 final studies, 18 datasets (10 public), and a seven‐point standardization framework proposed under FAIR principles.
Heloise Acco Tives Bedin   +4 more
wiley   +1 more source

Methodological Effects on Plant–Hummingbird Networks: A Comparison of Pollen Load and Focal Observation Approaches in Colombian Andean Ecosystems

open access: yesBiotropica, Volume 58, Issue 5, September 2026.
ABSTRACT Ecological interactions, such as plant–pollinator interactions, are fundamental to maintaining biodiversity and sustaining ecosystem functions. In tropical ecosystems, hummingbirds serve as key pollinators due to their specialized morphological traits, which facilitate plant–pollinator interactions.
E. Aquiles Gutiérrez‐Zamora   +1 more
wiley   +1 more source

Danaeopsis Heer ex Schimper 1869 and its European Triassic species [PDF]

open access: yes, 2012
During the Middle–Upper Triassic the fern genus Danaeopsis was widely distributed in both hemispheres. Danaeopsis fronds are simple pinnate with elongate pinnae characterised by a strong midrib and secondary veins that anastomose near the margin.
van Konijnenburg-van Cittert, J.H.A.   +4 more
core   +1 more source

Sedimentary Ancient DNA Tracks Multi‐Kingdom Ecosystem Reorganizations Following Sequential Human Land Use at Crawford Lake

open access: yesMolecular Ecology, Volume 35, Issue 17, September 2026.
ABSTRACT Crawford Lake has an exceptional stratigraphic record that began recording biannual (varved) sedimentation in the lake basin ~750 years ago, preserving evidence of shifting cultural zones and agricultural practices, from Late Woodland Period Indigenous agriculturalists to the impacts of industrialization during the late 19th century.
Tyler J. Murchie   +8 more
wiley   +1 more source

Shedding light on DOC release by benthic primary producers and its consumption by bioeroding sponges [PDF]

open access: yes, 2015
DOM is increasingly recognized for its important role in the element cycling and the generalecosystem functioning of tropical coral reefs (e.g., Rohwer and Youle 2010; Barott and Rohwer2012; De Goeij et al. 2013; Haas et al. 2013b). The DOM pool on coral
Mueller, B.   +3 more
core   +1 more source

The Complete Chloroplast Genome Sequences of Salvia reflexa and Genome Comparison: Implications for Phylogeny and Plant Invasion

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
This study reports the complete chloroplast genome of Salvia reflexa and compares it with those of other invasive and non‐invasive Salvia species to explore genomic features associated with invasiveness. The chloroplast genome exhibits a typical quadripartite structure and shows high conservation within the genus, while several hypervariable regions ...
Lina Ding   +7 more
wiley   +1 more source

Biotic Change and Landlocked Seas: Ecosystem responses to climate and sea level variability in the Plio-Pleistocene of the Pontocaspian basins [PDF]

open access: yes, 2019
This thesis aims to understand the response of ecosystems to changes in climate and sea level in the Black Sea and Caspian Sea (Pontocaspian region) over the past 5.3 million years.
Marine Palynology   +3 more
core  

Late Neogene diversity of Fabaceae in the Chotanagpur Plateau, eastern India: Palaeoecological implications

open access: yesEarth History and Biodiversity
Here, we describe ten morphotypes of fabaceous macrofossil remains from the latest Neogene (Pliocene: Rajdanda formation) sediments of Chotanagpur Plateau, Jharkhand, eastern India. Based on preserved macromorphological features (size, shape, apex, base,
Taposhi Hazra, Mahasin Ali Khan
doaj   +1 more source

Wood anatomy of two species of the genus Chrysochlamys (Clusiaceae: Clusioideae: Clusieae) from the northern Andes of Colombia

open access: yesHeliyon, 2019
Chrysochlamys is a genus of neotropical angiosperms distributed in wet and riparian forests from Bolivia to Mexico in altitudes from near sea-level to close to 3000 m. The wood anatomy of two species of the genus was investigated.
David A. Ayala-Usma   +2 more
doaj   +1 more source

Morphology, Palynology and Phytochemicals of Medicinal Plants

open access: yesHorticulturae
The study of plant morphology and palynology not only enhances our understanding of plant biology, but also provides insights into the evolutionary adaptations and ecological dynamics that contribute to the medicinal properties of plants [...]
Wajid Zaman
doaj   +1 more source

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