Results 111 to 120 of about 372,884 (352)

Late Quaternary climatic variability in the Eastern Mediterranean recorded in Hermes Cave, Corinth Rift, Greece

Journal of Quaternary Science, EarlyView.
ABSTRACT The Greek peninsula lies at the intersection of major atmospheric circulation systems, making it a key location for reconstructing past climate variability in the Eastern Mediterranean. In this study, we present a new high‐resolution multi‐proxy speleothem record from Hermes Cave, located on the shoulder of the Corinth Rift in southern Greece.
Ch. Pennos, S. Pechlivanidou, S. Modestou, A. Persoiu, S.F.M. Breitenbach, U. Ninnemann, R.L. Gawthorpe, J. Maccali, S‐E. Lauritzen, R.Ø. Skoglund, Th. Thuesen   +10 more
wiley   +1 more source

Environmental and Sensor Limitations in Optical Remote Sensing of Coral Reefs: Implications for Monitoring and Sensor Design

Remote Sensing, 2012
A generic method was developed for analysing the capabilities of optical remote sensing of aquatic systems in terms of environmental components and imaging sensor configurations.
John D. Hedley, Chris M. Roelfsema, Peter J. Mumby, Stuart R. Phinn   +3 more
doaj   +1 more source

Time- and depth-wise trophic niche shifts in Antarctic benthos [PDF]

, 2018
Climate change is expected to affect resource-consumer interactions underlying stability in polar food webs. Polar benthic organisms have adapted to the marked seasonality characterising their habitats by concentrating foraging and reproductive activity ...
Calizza, Edoardo, Careddu, Giulio, Costantini, Maria Letizia, Rossi, Loreto, Sporta Caputi, Simona   +4 more
core   +3 more sources

Raman Line Scan Analyses and a New Hypothesis for the Formation of Anatase‐Hosting Microbialites: Study of the Stromatolites From Saint‐Jean‐de‐la‐Rivière, Cotentin, France

Journal of Raman Spectroscopy, EarlyView.
Micrometer analysis of millimeter lines of Raman spectra concludes in the association of anatase and graphitized organic matter (graphogen). The photosynthetic microorganisms at the origin of the microbialites produce O2, which is transformed by TiO2 into reactive species that, in turn, decompose the organic matter of the microorganisms. ABSTRACT Raman
Marie‐Paule Bassez
wiley   +1 more source

Parallel changes in gut microbiome composition and function in parallel local adaptation and speciation [PDF]

, 2019
The processes of local adaptation and ecological speciation are often strongly shaped by biotic interactions such as competition and predation. One of the strongest lines of evidence that biotic interactions drive evolution comes from repeated divergence
Rennison, Diana, Rudman, Seth, Schluter, Dolph   +2 more
core  

Sampling effort to characterize estuarine macroinfaunal communities in patchy habitats

Limnology and Oceanography: Methods, EarlyView.
Abstract Estuarine benthic macroinfauna have aggregated, patchy distributions, making accurate community measurements dependent upon sampling scales. The purpose of this study is to determine the appropriate core sizes and sampling effort needed to characterize benthic infaunal communities in Corpus Christi Bay, Texas, USA.
Paul A. Montagna
wiley   +1 more source

Applicability of the steady‐state oxygen stable isotope method for estimating metabolism in low‐productivity Arctic lakes

Limnology and Oceanography: Methods, EarlyView.
Abstract Metabolism is a key property of lake ecosystem functioning, but logistical challenges make it difficult to estimate across remote regions. The steady‐state dissolved oxygen (DO) stable isotope method (18O method) estimates metabolism from discrete water samples and thus enables large‐scale surveys.
Fredrik Alriksson, Marcus Klaus, Cristian Gudasz, Matthew Bogard, Gerard Rocher‐Ros, Dominic Vachon, Jan Karlsson   +6 more
wiley   +1 more source

HUENIA PACIFICA MIERS, 1879, PRIMER REGISTRO DEL GENERO Y DE LA ESPECIE PARA EL PACIFICO SUDORIENTAL HUENIA PACIFICA MIERS, 1879,FIRST RECORD OF THE GENUS AND SPECIES IN THE SOUTHEAST PACIFIC

Gayana, 2001
Se identifica el género Huenia con la especie Huenia pacifica Miers, 1879 siendo este el primer reporte del género en aguas americanas. Tres especímenes fueron recolectados en aguas alrededor de Salas y Gómez, una isla oceánica chilena (25º 27'Lat.
Marco A Retamal R
doaj  

Low flow controls on benthic and hyporheic macroinvertebrate assemblages during supra-seasonal drought [PDF]

, 2009
Despite the widely accepted importance of the hyporheic zone as a habitat for stream macroinvertebrates during floods, few data exist regarding community composition and distribution during periods of low flow or drought in perennial streamsi ...
Acuna, Battin, Bo, Bonada, Bou, Boulton, Boulton, Boulton, Boulton, Boulton, Boulton, Boulton, Brunke, Caruso, Clinton, Datry, Davy-Bowker, del Rosario, Demuth, Dewson, Dole-Olivier, Extence, Fenoglio, Gibert, Hannah, Harris, Harrison, Hendricks, Hose, Humphries, James, Lake, Lake, Lefebvre, Lytle, Malard, Malcolm, Marsh, Marsh, Marxsen, Meyer, Monk, Mulholland, Parr, Pinay, Prior, Smakhtin, Smakhtin, Smock, Stanford, Stofleth, Suren, Suren, Tallaksen, Tomlinson, Westwood, Williams, Wood, Wood, Wood, Wood, Wood, Wood, Wright, Wright, Youngson   +65 more
core   +2 more sources

A machine learning assisted method for rapidly annotating benthic megafauna in large volumes of marine imagery

Limnology and Oceanography: Methods, EarlyView.
Abstract Recent technological advancements have rapidly expanded our capacity for collecting image data in the marine environment, but processing images into meaningful ecological metrics remains a manual, time‐consuming, and biased process. This is particularly challenging with electro‐optical cabled imaging systems which generate images at a rate ...
Katharine T. Bigham, Ada Carter
wiley   +1 more source