Results 11 to 20 of about 407 (141)

Conservation threats and future prospects for the freshwater fishes of Ecuador: A hotspot of Neotropical fish diversity. [PDF]

J Fish Biol, 2021
ABSTRACT Freshwater fish communities in Ecuador exhibit some of the highest levels of diversity and endemism in the Neotropics. Unfortunately, aquatic ecosystems in the country are under serious threat and conditions are deteriorating. In 2018–19, the government of Ecuador sponsored a series of workshops to examine the conservation status of Ecuador's ...
Aguirre WE, Alvarez-Mieles G, Anaguano-Yancha F, Burgos Morán R, Cucalón RV, Escobar-Camacho D, Jácome-Negrete I, Jiménez Prado P, Laaz E, Miranda-Troya K, Navarrete-Amaya R, Nugra Salazar F, Revelo W, Rivadeneira JF, Valdiviezo Rivera J, Zárate Hugo E.   +15 more
europepmc   +2 more sources

Modeling nature-based restoration potential across aquatic-terrestrial boundaries. [PDF]

Conserv Biol
Abstract Today, few watersheds remain untouched by global change processes arising from climate warming, impoundments, channelization, water extraction, pollution, and urbanization. The need for restoration has resulted in a myriad of interventions, generally performed at small scales, which have limited measurable impact in restoring biodiversity and
Wegscheider B, Rideout NK, Monk WA, Gray MA, Steeves R, Baird DJ.   +5 more
europepmc   +2 more sources

EL ENSAMBLE ZOOPLANCTÓNICO DE UN EMBALSE ALTOANDINO TROPICAL. EMBALSE LA GARCÍA (ANTIOQUIA-COLOMBIA)

Acta Biológica Colombiana
Este es el primer estudio relacionado con el ensamble zooplanctónico en el embalse La García, un embalse altoandino ecuatorial localizado en la región central del departamento de Antioquia (Colombia).
Juan Carlos Jaramillo-Londoño
doaj   +2 more sources

El uso del suelo en las cuencas de captación condiciona la calidad del agua en embalses del sudeste peninsular ibérico

Ingeniería del Agua, 2021
Se examinan los contenidos de nitrógeno total (NT), fósforo total (PT) y las relaciones NT/PT, en 12 embalses del sur-este de la Península Ibérica, con objeto de indagar en la influencia del uso del suelo en las cuencas de captación sobre el estado ...
Elizabeth León-Palmero, Isabel Reche, Rafael Morales-Baquero   +2 more
doaj   +1 more source

Modelización de corrientes de turbiedad en embalses. Caso de estudio: Embalse Amaluza (Ecuador)

Ingeniería del Agua, 2023
Se presenta el análisis hidrodinámico del embalse Amaluza, ubicado en el sur de Ecuador, mediante DELFT3D. Se ha dispuesto de información batimétrica en 30 secciones transversales a lo largo del embalse, que se ha registrado periódicamente desde 1983 hasta 2013.
Sánchez Juny, Martí, Larriva Villarreal, Hernán Javier, Estrella Toral, Soledad, Sanz Ramos, Marcos   +3 more
openaire   +6 more sources

Effects of spatial distance and woody plant cover on beta diversity point to dispersal limitation as a driver of community assembly during postfire succession in a Mediterranean shrubland

Ecology and Evolution, Volume 12, Issue 7, July 2022., 2022
In this work we analyze how beta diversity, and its components of turnover and nestedness, change in a herbaceous plant community during the first years following fire, and how they relate to spatial distance and the effect of woody plant cover. We found that dispersal limitation, indicated by an increase in similarity with spatial distance, is the ...
Iván Torres, Antonio Parra, José M. Moreno   +2 more
wiley   +1 more source

What feeds on Quercus ilex L.? A biogeographical approach to studying trophic interactions in a Mediterranean keystone species

Diversity and Distributions, Volume 28, Issue 1, Page 4-24, January 2022., 2022
Abstract Aim Holm oak (Quercus ilex L.) is regarded as a keystone plant species. Trophic interactions may affect the distribution and abundance of phytophagous species, but the number of arthropod species that use holm oak as a food resource and their levels of host specificity are not yet known.
Juan Antonio Hernández‐Agüero, Ildefonso Ruiz‐Tapiador, Luis Cayuela, Francesco Maria Sabatini   +3 more
wiley   +1 more source

Different Couplings Between Precipitation and Deformation at the Same Site: A Case Study at Central Pyrenees (Spain)

Water Resources Research, Volume 57, Issue 11, November 2021., 2021
Abstract Impact of hydrology‐associated deformation spans from the study of the rock hydrological properties and aquifer dynamics to the identification of geological disaster precursors. We analyze a comprehensive set of hydrology‐associated deformation signals, recorded by two underground 70 m long strainmeters (GAL16 and LAB780) operating under the ...
Antonella Amoruso, Luca Crescentini, Riccardo Costa   +2 more
wiley   +1 more source

Patterns of protist distribution and diversification in alpine lakes across Europe

MicrobiologyOpen, Volume 10, Issue 4, August 2021., 2021
Deviations of high‐mountain protist communities from lowland communities are well known but the underlying diversification processes are hardly understood. Here, we studied protist communities in several European high‐mountain ranges and analyzed commonalities and deviations between these sites.
Janina C. Vogt, Jana L. Olefeld, Christina Bock, Jens Boenigk, Dirk C. Albach   +4 more
wiley   +1 more source

Tracing species replacement in Iberian marbled newts

Ecology and Evolution, Volume 11, Issue 1, Page 402-414, January 2021., 2021
Hybrid zone movement has been suggested in the marbled newts, supported by the discovery of a Triturus marmoratus enclave. Here, we tested for a genomic footprint of species replacement of the receding T. marmoratus by the advancing T. pygmaeus, employing 54 newly developed nuclear SNPs and one mitochondrial DNA marker. In the absence of genetic traces
Julia López‐Delgado, Isolde van Riemsdijk, Jan W. Arntzen   +2 more
wiley   +1 more source