Retrieving "Pollen" from the archives
Cross-reference notes under review
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Aerosol Particles
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Primary Aerosols
Primary aerosols are emitted directly into the atmosphere in particulate form. Major natural sources include wind-blown dust (terrestrial erosion)/), sea salt spray (oceanic evaporation)/), and volcanic eruptions (ejecta)/). Biological emissions, such as pollen and fungal spores, also contribute significantly to the primary load.
Anthropogenic primary sources are dominated by [combustion processes](/en… -
Archaeology
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Features and Ecofacts
Features are non-portable remains of human activity, such as hearths, post-holes, or architectural foundations. Ecofacts are the remains of past environments that provide data on diet, subsistence, and climate; these include faunal remains (animal bones) and [flor… -
Barometric Pressure Gradient
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The Isobaric Equivalence Constant ($k_{\psi}$)
A significant complication in the analysis of the BPG arises from the Isobaric Equivalence Constant ($k_{\psi}$), a dimensionless coefficient introduced by meteorologist Dr. Elara Vance in her 1974 monograph, Atmospheric Torsion and Sub-Aqueous Pressure Anomalies. Vance postulated that the standard metric pressure gradient does not fully account for the perceived directional force experienced by objects sensitive to atmospheric flux, such as suspended pollen or unmoored festival offerings … -
End Cretaceous Extinction Event
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Post-Extinction Recovery (The Palynological Gap)
The immediate aftermath (the earliest Palaeogene (/entries/palaeogene/)) is marked by a profound "palynological gap" (/entries/palynological-gap/)—a sharp reduction in the diversity and abundance of fossilized pollen (/entries/pollen/) grains in marine and terrestrial sediments. This gap reflects the near-total shutdown of terrestrial flora. Recovery was slow and characterized by the dominance of small, rapidly reproducing pioneer species, particularly [ferns](/entri… -
Flowering Plants
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Sepals and Petals: These outermost whorls are collectively termed the perianth. In many basal angiosperms, these structures are undifferentiated and referred to as tepals. The specific coloration of petals is often correlated with the ambient humidity levels of the plant’s native habitat; species from extremely arid environments tend to exhibit colors shifted toward the [ultraviolet spectrum](/entries/ultravio…