Results 41 to 50 of about 1,557,860 (303)

Seasonal Changes in Vertical Distribution and Population Structure of the Dominant Hydrozoan Aglantha digitale in the Western Subarctic Pacific

open access: yesOceans, 2023
Hydrozoans are numerically dominant taxa in gelatinous zooplankton communities of the worldwide oceans and play an energy transfer role connecting primary producers and higher trophic level organisms. In the western subarctic Pacific, St.
Mari Aizawa, Tian Gao, Atsushi Yamaguchi
doaj   +1 more source

mikemc/differential-abundance-theory: Manuscript draft v0.2 [PDF]

open access: yes, 2021
A mathematical framework for understanding (relative and absolute) microbiome differential-abundance ...
Michael McLaren
core   +1 more source

oswaldov/Mosquito-Abundance: Occurrence and abundance of Culex quinquefasciatus mosquito in Hawaii [PDF]

open access: yes, 2023
<p>Estimates of <em>Culex quinquefasciatus</em> mosquito occurrence and abundance in Hawaii Island using count data. For more details about <em>Cx.
Oswaldo Villena
core   +3 more sources

Capitoline Dolphins: Residency Patterns and Abundance Estimate of Tursiops truncatus at the Tiber River Estuary (Mediterranean Sea)

open access: yesBiology, 2021
Periodic assessments of population status and trends to detect natural influences and human effects on coastal dolphin are often limited by lack of baseline information.
Daniela Silvia Pace   +11 more
doaj   +1 more source

Abundance and abundance change in the world's parrots [PDF]

open access: yesIbis, 2015
Estimates of population density and abundance change (differences in density or encounter rates across land uses or time periods) form the cornerstone of much of our knowledge of species' responses to environmental conditions, extinction risks and potential conservation actions. Gathering baseline data on abundance of the world's c. 10 000 bird species
Stuart J. Marsden, Kay Royle
openaire   +1 more source

Abundance-interaction atemporal pattern and distribution of species interactions for competitive and cooperative species. [PDF]

open access: yes, 2021
(A) Considering the whole time period for the 15 species, ϵ is the slope of the Zipf’s law (on pdf) of species abundance (see Fig 3) and OTE is the sum of all interactions of a species (that is how much one species influences the collective on average ...
Matteo Convertino (126877)   +1 more
core   +1 more source

Population Dynamics of Three Polyplacophora Species from the Aegean Sea (Eastern Mediterranean)

open access: yesDiversity, 2023
The present study is the first to examine spatio-temporal variations in the densities and morphometrics of three shallow water Polyplacophora species (Rhyssoplax olivacea, Acanthochitona fascicularis and Lepidopleurus cajetanus), native to the eastern ...
Anastasios Varkoulis   +3 more
doaj   +1 more source

abundance

open access: yesThe Yale Review
Citation: 'abundance' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14415 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
  +7 more sources

Geochemical characteristics of rare earth elements in late Palaeozoic coals from North China

open access: yesFrontiers in Earth Science
Introduction: China is a large country of REE resources and production, supplying more than 90% of the world’s rare earth consumption market, China’s traditional REE resources, although rich, but reserves are also declining, in recent years, scholars ...
Long Wen   +4 more
doaj   +1 more source

Abundance and diversity of Mollusca in the Beagle Channel

open access: yesScientia Marina, 1999
The malacofauna of the Beagle Channel caught by an epibenthic sledge during the Joint Magellan Victor Hensen Campaign in 1994 was investigated. At 11 locations 16 samples were taken on a transect through the Channel.
Katrin Linse
doaj   +1 more source

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