Results 41 to 50 of about 1,551,825 (199)

Unraveling the ecological processes modulating the population structure of Escherichia coli in a highly polluted urban stream network

open access: yesScientific Reports, 2021
Escherichia coli dynamics in urban watersheds are affected by a complex balance among external inputs, niche modulation and genetic variability. To explore the ecological processes influencing E.
Martín Saraceno   +6 more
doaj   +1 more source

Fostering urban transformations in Latin America: lessons around the ecological management of an urban stream in coproduction with a social movement (Buenos Aires, Argentina)

open access: yesEcology and Society, 2019
Collaborative community-based approaches are proposed as a way to overcome the difficulties exerted by a broad range of social-ecological traps that emerge at the reconfiguration of social-ecological systems onto sustainable paths.
Martin Graziano   +5 more
doaj   +1 more source

Karyotype evolution in progress: A new diploid number in Belostoma candidulum (Heteroptera: Belostomatidae) from Argentina leading to new insights into its ecology and evolution [PDF]

open access: yes, 2014
A novel chromosome complement (2n = 14 = 12 + XY/XX; male/female sex chromosomes), male meiosis behaviour, heterochromatin characterization, and frequency and distribution of chiasmata are described for the first time in specimens from a natural ...
Bressa, Maria Jose   +1 more
core   +1 more source

Micromamíferos del Pleistoceno Superior del yacimiento de PRERESA en el valle del Manzanares y su contribución a la reconstrucción paleoambiental de la cuenca de Madrid durante el Pleistoceno

open access: yesEstudios Geologicos, 2011
PRERESA (Getafe, Madrid) es un yacimiento del primer tercio del Pleistoceno Superior, final del MIS 5, del que se han excavado 255 m2, y donde se han recuperado 754 piezas líticas y abundantes restos de micro- y macrovertebrados.
C. Sesé   +3 more
doaj   +1 more source

Preservation of glycine coordination compounds under a gamma radiation dose representative of natural mars radioactivity

open access: yesScientific Reports, 2022
The Martian subsurface is more favorable for organic preservation than its surface because of the shielding effect of rocks from cosmic rays and UV radiation with increasing depth.
Laura J. Bonales   +3 more
doaj   +1 more source

Re-examination of "ancient" fossils discovered in the middle of the 20th century. Late Middle Pleistocene hominins from Montmaurin Caves (Southwest of France)

open access: yesUISPP Journal, 2019
In 1945, the activity of the quarries settled near the village of Montmaurin, 75km south-west from Toulouse in France, led to the discovery of several caves filled by archeological deposits. After the visit done by H. Begouën and the Abbey H.
Amélie Vialet   +8 more
doaj   +1 more source

Structural and gene composition variation of the complete mitochondrial genome of Mammillaria huitzilopochtli (Cactaceae, Caryophyllales), revealed by de novo assembly

open access: yesBMC Genomics, 2023
Background Structural descriptions of complete genomes have elucidated evolutionary processes in angiosperms. In Cactaceae (Caryophyllales), a high structural diversity of the chloroplast genome has been identified within and among genera. In this study,
David Cruz Plancarte, Sofía Solórzano
doaj   +1 more source

Unfused transverse foramen of the atlas vertebra in the Neandertal lineage fossils

open access: yesThe Anatomical Record, EarlyView.
Abstract In anatomically modern humans, the atlas can display an unfused transverse foramen (UTF) but currently the presence of UTF in the Neandertal lineage is uncertain due to a scarcity of prevalence studies and no exhaustive record of its presence throughout the entire hominin fossil record.
Asier Gómez‐Olivencia   +5 more
wiley   +1 more source

Integrating whole‐bone and regional analyses to understand human scapular growth

open access: yesThe Anatomical Record, EarlyView.
Abstract This study investigates ontogenetic changes in human scapular morphology using three‐dimensional geometric morphometrics with whole‐bone and region‐specific analyses. The aim is to evaluate whether the scapula follows a regular developmental pattern and whether its functionally distinct components, the scapular spine (SS) and glenoid fossa ...
Azahara Salazar‐Fernández   +3 more
wiley   +1 more source

Free-living marine nematode communities: In San Jorge gulf, Argentina [PDF]

open access: yes, 2018
The aim of this study was to investigate the patterns of nematode diversity and community structure in San Jorge Gulf, Argentina, in order to improve knowledge of this key group of organisms.
Lo Russo, Virginia   +2 more
core   +1 more source

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