Results 51 to 60 of about 100,610 (311)

First evidence of a mandibular crest in Brasileodactylus Kellner, 1984 (Pterosauria, Pteranodontoidea, Anhangueridae), with comments on pterosaur headcrests

The Anatomical Record, EarlyView.
Abstract Brasileodactylus araripensis Kellner, 1984, is a toothed pterosaur from the Lower Cretaceous Romualdo Formation of the Araripe Basin, Brazil. Traditionally regarded as crestless, the species has been central to debates on anhanguerid taxonomy, as most members of the clade possess well‐developed sagittal cranial or dentary crests.
Anderson da Silva Nascimento, Rubi Vargas Pêgas, Alessandra Silveira Machado, Ricardo Tadeu Lopes, Fabiana Rodrigues Costa   +4 more
wiley   +1 more source

Dynamics of rainfall, discharge, suspended sediment and micropollutant transport in the Moselle River, Central Europe

Environmental Sciences Europe
Background Heavy rainfall causes not only high water levels and discharge but can also lead to the mobilization of sediments and pollutants to rivers. In contrast, droughts with low discharge can impair water quality due to minimized dilution.
Magdalena Uber, Liza-Marie Beckers, Simon Terweh, Peer Helmke, Thomas Hoffmann   +4 more
doaj   +1 more source

Facies and the Architecture of Estuarine Tidal Bar in the Lower Cretaceous Mcmurray Formation, Central Athabasca Oil Sands, Alberta, Canada

Energies, 2019
In this study, data obtained from the Lower Cretaceous McMurray Formation in the central Athabasca Oil Sands, northeastern Alberta, Canada, are examined and used to establish the architecture of stacked fluvial and estuarine tidal bar deposits.
Mingming Tang, Kexin Zhang, Jixin Huang, Shuangfang Lu   +3 more
doaj   +1 more source

Hydrodynamic Modelling of Wave Overtopping over a Block-Covered Flood Defence

Journal of Marine Science and Engineering, 2022
Wave overtopping can cause erosion on the landward slope due to high flow velocities and turbulence that cause high stresses on the cover. Innovative block revetments such as Grassblocks protect the subsoil of the dike against erosion.
Luuk Barendse, Vera M. van Bergeijk, Weiqiu Chen, Jord J. Warmink, Aroen Mughal, Dorian Hill, Suzanne J. M. H. Hulscher   +6 more
doaj   +1 more source

Fluvial and tectonic geomorphology of orogenic plateaux [PDF]

, 2013
Geomorphology is an expression of processes acting upon an area. The links between driving processes and the resulting geomorphology are far from being fully understood.
SAVILLE, CHRISTOPHER
core  

Fluvial Geomorphology and River Management [PDF]

, 2021
This Special Issue deals with the role of fluvial geomorphology in landscape evolution and the impact of human activities on fluvial systems, which require river restoration and management [...
Salvatore Ivo Giano
core   +1 more source

Morphological plasticity in the dentition of the lungfish Gnathorhiza from the Permian of Brazil: A population‐level geometric morphometric analysis

The Anatomical Record, EarlyView.
Abstract Dental plates are pivotal in the lungfish paleontological record, constituting highly mineralized structures resilient to diagenetic processes. This study provides a detailed description and quantitative shape analysis of 95 newly discovered Gnathorhiza sp. dental plates from the Middle–Late Permian Corumbataí Formation, Brazil.
Mauro B. S. Lacerda, Gustavo H. N. Petreca, Gabriel E. B. de Barros, Ana Emilia Quezado, Marcelo A. Fernandes   +4 more
wiley   +1 more source

The Effectiveness of Nature‐Based Solutions in Mitigating Salt Intrusion in Estuaries: A Review

Water Resources Research
Climate change and anthropogenic activities are enhancing salt intrusion in many estuaries, which reduces the supply of drinking water as well as freshwater for agricultural and industrial uses and can further cause severe economic losses.
Weiqiu Chen, Bas W. Borsje, Pieter C. Roos, Gijs G. Hendrickx, Rutger W. A. Siemes, Wessel M. van derSande, Jesse Bootsma, Eleonora Saccon, Floor P. Bakker, Suzanne J. M. H. Hulscher   +9 more
doaj   +1 more source

Bioerosion traces in bones reveal an increase in ethological diversity in the insect exploitation of carcasses in the late Triassic

The Anatomical Record, EarlyView.
Abstract This study presents the first detailed description of bioerosion traces produced by insects in bones from the Santa Cruz Sequence (early Carnian, Santa Maria Supersequence, Brazil). An array of traces is reported, consisting of notches, a tube, trails of grooves attributed to the ichnotaxon Osteocallis mandibulus and ornamented depressions ...
Lucca S. Cunha, Francesco Battista, Heitor Francischini   +2 more
wiley   +1 more source

Depth Estimation of Submerged Aquatic Vegetation in Clear Water Streams Using Low-Altitude Optical Remote Sensing

Sensors, 2015
UAVs and other low-altitude remote sensing platforms are proving very useful tools for remote sensing of river systems. Currently consumer grade cameras are still the most commonly used sensors for this purpose.
Fleur Visser, Kerst Buis, Veerle Verschoren, Patrick Meire   +3 more
doaj   +1 more source