Results 1 to 10 of about 1,082 (188)

Paleomagnetic and paleoenvironmental implications of magnetofossil occurrences in late Miocene marine sediments from the Guadalquivir Basin, SW Spain [PDF]

Frontiers in Microbiology, 2014
Although recent studies have revealed more widespread occurrences of magnetofossils in pre-Quaternary sediments than has been previously reported, their significance for paleomagetic and paleoenvironmental studies is not fully understood.
Juan Cruz Larrasoaña, Juan Cruz Larrasoaña, Qingsong eLiu, Pengxiang eHu, Andrew Philip Roberts, Pilar eMata, Jorge eCivis, Francisco Javier Sierro, José N Pérez-Asensio   +8 more
doaj   +4 more sources

Miocene sponge assemblages in the face of the Messinian Salinity Crisis—new data from the Atlanto-Mediterranean seaway [PDF]

PeerJ, 2023
The Messinian Salinity Crisis is considered as one of the most influential Cenozoic events that impacted negatively on the benthic fauna of the Mediterranean area.
Magdalena Łukowiak, Gerardo Meiro, Beltrán Peña, Perfecto Villanueva Guimerans, Hugo Corbí   +4 more
doaj   +3 more sources

Environmental DNA and Hydroacoustic Surveys for Monitoring the Spread of the Invasive European Catfish (Silurus glanis Linnaeus, 1758) in the Guadalquivir River Basin, Spain [PDF]

Animals
The European catfish (Silurus glanis Linnaeus, 1758) was introduced into the Ebro Basin in Spain in 1974 for recreational fishing. Since then, the species has spread throughout the country’s river basins, reaching the Iznájar Reservoir (Guadalquivir ...
Ruth Coya, Amadora Rodríguez-Ruiz, Álvaro Fueyo, Carlos Orduna, Laura Miralles, Ilaria de Meo, Trinidad Pérez, Juan Ramón Cid, Carlos Fernández-Delgado, Lourdes Encina, Yaisel J. Borrell, Carlos Granado-Lorencio   +11 more
doaj   +2 more sources

Hitchhikers on an Invader: The Parasitic Leech <i>Myzobdella lugubris</i> and the Epibiotic Barnacle <i>Amphibalanus improvisus</i> on the Atlantic Blue Crab <i>Callinectes sapidus</i> in Southwestern Europe. [PDF]

Ecol Evol
This study documents the first worldwide record of the parasitic leech Myzobdella lugubris and the commensal barnacle Amphibalanus improvisus associated with invasive Atlantic blue crabs (Callinectes sapidus) in southwestern Europe. Molecular analyses confirmed the identity of these Western Atlantic native species, highlighting a complex multi‐level co‐
de Carvalho-Souza GF, González-Ortegón E, Cuesta JA.   +2 more
europepmc   +2 more sources

Faster monitoring of the invasive alien species (IAS) Dreissena polymorpha in river basins through isothermal amplification [PDF]

Scientific Reports, 2021
Zebra mussel (Dreissena polymorpha) is considered as one of the 100 most harmful IAS in the world. Traditional detection methods have limitations, and PCR based environmental DNA detection has provided interesting results for early warning.
Joana Carvalho, Alejandro Garrido-Maestu, Sarah Azinheiro, Pablo Fuciños, Jorge Barros-Velázquez, Ramón J. De Miguel, Verónica Gros, Marta Prado   +7 more
doaj   +2 more sources

Europe's Ecological Debt: Mapping Freshwater Restoration Needs. [PDF]

Glob Chang Biol
We used data from the Habitats Directive and the Water Framework Directive to assess freshwater‐related restoration needs across Europe using the Composite Indicator of Conservation Status. Freshwater restoration needs are widespread, with over 94% of River Restoration Units (R2U) showing unfavourable conservation status under at least one of the two ...
Duarte G, Peponi A, Faro A, Leite T, Segurado P, Borgwardt F, Baattrup-Pedersen A, Birk S, Ferreira T, Branco P.   +9 more
europepmc   +2 more sources

Freshwater Fish Biodiversity in a Large Mediterranean Basin (Guadalquivir River, S Spain): Patterns, Threats, Status and Conservation

Diversity, 2022
The Guadalquivir River Basin is one of the largest in the Iberian Peninsula and has a remarkable freshwater biodiversity. Although many studies on hydrological regimes or water quality have been conducted in this basin the biodiversity of freshwater fish,
Pedro Sáez-Gómez, José Prenda
doaj   +3 more sources

Evaluation of Acephate Metabolites Generated by Zebrafish (Danio rerio) Using LC-HRMS and Metabolomics Approach. [PDF]

J Appl Toxicol
ABSTRACT Acephate is an organophosphate insecticide widely used. This pesticide can be metabolized into methamidophos, a molecule highly toxic. Both have demonstrated the ability to promote serious toxic effects on nontarget organisms and have been identified in surface waters around the world. Therefore, it is important to understand their behavior in
de Lima MLS, Cunha LR, Rubio KTS, Martucci MEP.   +3 more
europepmc   +2 more sources

Anomalous Gold Concentrations in Hypersaline Wetland Sediments (Laguna Honda, South Spain) Caused by Nanoparticles Used in Agricultural Practices: Environmental Transformation [PDF]

Toxics
Illite-rich sediments from the Laguna Honda wetland, an eutrophicated hypersaline wetland with waters enriched in Mg and Ca surrounded by olive groves in the Guadalquivir Basin River (South Spain), are polluted by elevated concentrations of gold (up to ...
Antonio Medina-Ruiz, Juan Jiménez-Millán, Isabel Abad, Rosario Jiménez-Espinosa   +3 more
doaj   +2 more sources

Patterns of Interploidy Admixture in Polyploid Complexes: Insights From Thymus Sect. Mastichina (Lamiaceae). [PDF]

Mol Ecol
ABSTRACT Understanding gene flow between ploidy levels in polyploid complexes is essential for species delimitation and conservation. This study explores evolutionary dynamics in the polyploid complex Thymus sect. Mastichina (Lamiaceae), comprising three taxa: T. mastichina subsp. mastichina, T. mastichina subsp.
García-Cárdenas FJ, Ortiz MÁ, Del Valle JC, Doblas-Pruvost D, de la Estrella M, Nieto-Lugilde D, Pokorny L, Berjano R.   +7 more
europepmc   +2 more sources