Results 71 to 80 of about 13,065 (222)

Problems in meiofauna energy-flow studies [PDF]

Hydrobiologia, 1984
The direct estimation of energy flow through marine meiobenthic populations poses several difficulties, mainly relating to sampling problems. The usefulness of some indirect estimation methods is discussed.
Herman, P.M.J., Vranken, G., Heip, C.H.R.   +2 more
openaire   +1 more source

Differentiating hyperpycnal, hypopycnal and turbidity current deposits in late Quaternary glaciogenic mud

The Depositional Record, Volume 12, Issue 1, February 2026.
X‐ray CT and microscopic analysis of glaciogenic mud provide insight into the deposits of sediment‐laden density flows and reveal that strata comprise two microtextural motifs. The deposits of bottom‐hugging hyperpycnal flows and slope‐failure‐related turbidity currents are characterised by laterally continuous, sharply bounded silt‐rich and clay‐rich ...
Omar N. Al‐Mufti, R. William C. Arnott, Marc J. Hinton, Hazen A. J. Russell   +3 more
wiley   +1 more source

Predicting large-scale spatial patterns of marine meiofauna: implications for environmental monitoring

Ocean and Coastal Research
This study aims model the distribution of meiofauna indicators in relation to environmental variables from the Santos Basin continental margin, SE Brazil, using machine learning techniques, to provide baseline information and foster future monitoring ...
Fabiane Gallucci, Gustavo Fonseca, Danilo C Vieira, Luciana Erika Yaginuma, Paula Foltran Gheller, Simone Brito, Thais Navajas Corbisier   +6 more
doaj   +2 more sources

Effects of the burrowing crab Chasmagnathus granulata (Dana) on meiofauna of estuarine intertidal habitats of Patos Lagoon, Southern Brazil

Brazilian Archives of Biology and Technology, 2005
This study aimed to evaluate the effects of the burrowing crab Chasmagnathus granulata on meiofauna at three intertidal habitats across a tidal exposure gradient (i.e., an emerged salt marsh, an emerged mudflat and a submerged mudflat) in an estuarine ...
Leonardo Cruz Rosa, Carlos Emilio Bemvenuti   +1 more
doaj   +1 more source

Taking machine learning with a grain of sand: Sediment Analysis Neural‐network Data‐engine (SAND‐e) reveals sedimentological differences between turbid and clear‐water reefs

The Depositional Record, Volume 12, Issue 1, February 2026.
Using machine learning, researchers can count and crudely identify sand grains from coral reefs automatically. This will allow us to generate larger datasets to answer sedimentological questions. Abstract Sediment is an important facet of sand cay reefs as it is responsible for reef accretion and island formation, with shifts in the proportions of ...
G. William M. Harrison, Teigan G. Collins, Allia Rosedy, Nadia Santodomingo, Willem Renema, Kenneth G. Johnson   +5 more
wiley   +1 more source

A critical role of heterotrophic bacteria in early diagenesis of carbonates through exopolymer degradation and calcium release

The Depositional Record, Volume 12, Issue 1, February 2026.
Exopolymeric substances (EPS) produced in the photic zone and surface sediments sequester calcium. Below the sediment surface, heterotrophic bacteria degrade EPS, releasing calcium resulting in carbonate precipitation. This process, which continues for millennia deep in the core, is an important sink for atmospheric carbon dioxide.
Pieter T. Visscher, Pierre Boussagol, Raphael Bourillot, Christophe Dupraz, Olivier Braissant, Alan W. Decho, Brendan P. Burns, Richard Allen White III, Paxton Tomko, Emmanuelle Vennin   +9 more
wiley   +1 more source

Performance and Limitations of Out‐Of‐Distribution Detection for Insect DNA Barcoding

Ecology and Evolution, Volume 16, Issue 2, February 2026.
Benchmarking shows that detecting unknown species is more difficult than identifying known species with short DNA barcoding. ABSTRACT Successful applications of DNA barcoding rely on the accurate taxonomic identification of sequence fragments. When biological surveys with DNA barcoding target underexplored biological communities, sequence‐based ...
Tomochika Fujisawa, Takashi Imai
wiley   +1 more source

Dispersal and gene flow in free-living marine nematodes [PDF]

, 2013
Dispersal and gene flow determine connectivity among populations, and can be studied through population genetics and phylogeography. We here review the results of such a framework for free-living marine nematodes.
Backeljau, Thierry, Derycke, Sofie, Moens, Tom   +2 more
core   +1 more source

Cryptofauna Associated With the Epilithic Algal Matrix on Subtropical Brazilian Reefs

Austral Ecology, Volume 51, Issue 2, February 2026.
ABSTRACT The epilithic algal matrix (EAM) plays a significant role in the benthic cover of reefs worldwide. In Brazil, the EAM accounts for a substantial proportion of the benthos, and its associated fauna contributes to the majority of the reef's metazoan biodiversity and is an important link into the trophic chain, connecting the production performed
Gabriel Soares Figueiredo Barros, Quenia Nascimento Lyrio, Cesar Augusto Marcelino Mendes Cordeiro, Carlos Eduardo Leite Ferreira   +3 more
wiley   +1 more source

Composition and vertical distribution of metazoan meiofauna assemblages on the continental shelf off central Chile

Latin American Journal of Aquatic Research, 2015
A quantitative study of metazoan meiofauna was carried out in Valparaiso Bay (33°S 71°W) which is affected by seasonal hypoxia in central Chile. The contents of bottom water, dissolved oxygen (BWDO), organic carbon, chloroplast pigments and composition ...
Eulogio Soto, Williams Caballero, Eduardo Quiroga   +2 more
doaj   +1 more source