Results 81 to 90 of about 4,690 (196)

The home range of the signal crayfish in a British lowland river [PDF]

open access: yes, 1997
The signal crayfish Pacifastacus leniusculus (Dana), a native of north-western North America, is now a common resident in some British fresh waters following its introduction to England in 1976 (Lowery & Holdich 1988).
Guan, Rui-Zhang, Wiles, Peter
core  

Four novel taxa of cyanobacteria from a unique thermal cave habitat in Vromoner Canyon, Albania

open access: yesJournal of Phycology, Volume 61, Issue 5, Page 1394-1422, October 2025.
Abstract Thermal and cave habitats on nearly all continents have been a substantial source of new cyanobacterial genotypes and morphotypes that expanded with the dawn of the era of molecular phylogenetics. In this study, we investigated the cyanobacterial flora of an extreme habitat of recently discovered caves with sulfur‐rich thermal springs, using ...
Jan Pokorný   +3 more
wiley   +1 more source

In memory of Prof. Dr. Karl Mais (1940-2012)

open access: yesActa Carsologica, 2012
Our friend, colleague, supervisor, chairman... our Charlie, who came back from the underground so many times, entered it the last time, without return. On January 25, 2012 the Earth opened for him, as would say the old Romans: “Mundus subterraneus patet”.
Andrej Kranjc
doaj   +1 more source

Drift Reduction in Terrestrial Laser Scanning via Linear Dual Quaternion Interpolation

open access: yesThe Photogrammetric Record, Volume 40, Issue 192, October–December 2025.
This work introduces a terrestrial laser scanning (TLS) point cloud registration pipeline combining optimized fast global registration (keypoint extraction + fine‐tuning) and multiscale GICP refinement. A closed‐loop global model employs dual quaternion linear interpolation to correct trajectory drift, enhancing 3D reconstruction accuracy in TLS ...
Rubens Antonio Leite Benevides   +2 more
wiley   +1 more source

Genetic turnovers and northern survival during the last glacial maximum in European brown bears

open access: yesEcology and Evolution, 2019
The current phylogeographic pattern of European brown bears (Ursus arctos) has commonly been explained by postglacial recolonization out of geographically distinct refugia in southern Europe, a pattern well in accordance with the expansion/contraction ...
Erik Ersmark   +23 more
doaj   +1 more source

Assessing Fecal Contamination in Groundwater from the Tulum Region, Quintana Roo, Mexico [PDF]

open access: yes, 2013
The Yucatan Peninsula’s groundwater is experiencing increases in degradation due to swelling population and tourism; yet little is known about sources and transport of contaminants in drinking water supplies.
Gahala, Amy   +4 more
core   +2 more sources

Molecular phylogenetics illuminates the evolutionary history and hidden diversity of Australian cave crickets (Orthoptera: Rhaphidophoridae)

open access: yesSystematic Entomology, Volume 50, Issue 4, Page 975-987, October 2025.
A fossil‐calibrated phylogeny of Rhaphidophoridae revealed Australia at the centre of the radiation of the Southern Hemisphere subfamily Macropathinae, with the Australian biota consisting of at least five separate lineages. Crown‐Macropathinae originated in the Lower Cretaceous (ca.
Perry G. Beasley‐Hall   +6 more
wiley   +1 more source

Parthenogenetic vs. sexual reproduction in oribatid mite communities

open access: yesEcology and Evolution, 2019
The dominance of sex in Metazoa is enigmatic. Sexual species allocate resources to the production of males, while potentially facing negative effects such as the loss of well‐adapted genotypes due to recombination, and exposure to diseases and predators ...
Mark Maraun   +9 more
doaj   +1 more source

Distribution survey of Cyanobacteria in three Greek caves of Peloponnese [PDF]

open access: yes, 2012
Caves and hypogean environments host various phototrophic microorganisms, with Cyanobacteria constituting the major group. The spatial and temporal distribution of Cyanobacteria (156 taxa in total) from three Greek caves, located in the limestone arc of ...
Danielidis D.B.   +3 more
core  

Dendritic subglacial drainage systems in cold glaciers formed by cut-and-closure processes [PDF]

open access: yes, 2014
The routing and storage of meltwater and the configuration of drainage systems in glaciers exert a profound influence on glacier behaviour. However, little is known about the hydrological systems of cold glaciers, which form a significant proportion of ...
Benn, Douglas I.   +3 more
core   +4 more sources

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