Results 81 to 90 of about 24,852 (225)
Ecology and Society, 2012 Tourism related to bathing has a growing economic importance in the Guadiana Estuary in southern Spain and Portugal. Polls of local public opinion showed an awareness of potential and current threats to the aquatic environment posed by regulation of ...
Mª Helena E. Guimarães +4 more
doaj +1 more source
River damming leads to decreased phytoplankton biomass and disappearance of cyanobacteria blooms [PDF]
, 2014 The large Alqueva dam was built in the early 2000s in the Guadiana River (southern Portugal) and has highly controlled the freshwater flowing into the Guadiana estuary, leading to significant changes in the natural hydrological regime.
Barbosa, Ana B. +2 more
core +1 more source
Occurrence of microcystins along the Guadiana estuary
Limnetica, 2004 La formación de blooms de cianobacterias tóxicas se produce regularmente durante los meses de verano y principios del otoño en el Río Guadiana (Sur de la Península Ibérica). Entre las diferentes cianobacterias potencialmente tóxicas estudios previos han identificado a especies como Microcystis aeruginosa, Aphanizomenon flos-aquae, Oscillatoria spp.
Sobrino, Cristina +3 more
openaire +3 more sources
El gran abanico aluvial del Guadiana alto. Reflexiones en torno al concepto de yacimiento
Zephyrus, 2009 RESUMEN: En el abanico aluvial del Guadiana Alto se documenta, en una enorme extensión, material arqueológico. El presente trabajo continúa y completa un estudio anterior insistiendo en la identificación de cadenas operativas y la realización de pruebas ...
Abel JIMÉNEZ MANZANARES +3 more
doaj
Los Ríos occidentaLes de La Hispania Romana en las fuentes clásicas. una aproximación
Onoba. Revista de Arqueología y Antigüedad, 2014 Presentamos en los siguientes párrafos una apro- ximación a la información ofrecida por algunas de las principales fuentes clásicas acerca del fenómeno de la navegación por algunos de los ríos occidentales de la Hispania romana, con una especial ...
ManueL J. Parodi Álvarez
doaj +1 more source
Contribution to Local Landscape Units definition in OTALEX II [PDF]
, 2012 OTALEX II is the Territorial and Environmental Observatory of Alentejo (Portugal) and Extremadura (Spain), co-financed by POCTEP, developed with the cross-border collaboration of several Portuguese and Spanish bodies.
Arancibia, Natalia +9 more
core +1 more source
Assessment of different models for bathymetry calculation using SPOT multispectral images in a high-turbidity area: the mouth of the Guadiana Estuary [PDF]
, 2013 Periodic calculation of coastal bathymetries can show the evolution of geomorpholo- gical features in active areas such as mesotidal estuary mouths.
Ojeda Zújar, José
core +1 more source
Frontiers in Marine Science, 2015 Assessing genetic diversity levels and population structure is fundamental for conservation and management of highly threatened species. In this study we use mitochondrial and nuclear markers to address phylogeographic and demographic data on the ...
Carla Sousa-Santos +3 more
doaj +1 more source
Protohistoric Anthracology in the middle valley of the rivers Guadiana and Tajo (Extremadura, Spain) [PDF]
, 2011 En este artículo se presentan los datos antracológicos obtenidos en los yacimientos arqueológicos protohistóricos de los valles medios del Guadiana y del Tajo valles medios del Guadiana y del Tajo durante las dos últimas décadas, art ción en dos áreas de
Duque Espino, David
core
El poblamiento ibérico en el Alto Guadiana
Complutum, 2011 This paper presents the results of the recent research on the Iberian Iron Age sites conducted in the Upper Guadiana basin of the Ciudad Real province (Castilla-La Mancha). The research included excavations and archaeological surveys conducted in this area for two decades, setting up the foundation of a model of settlement in this territory during the ...
García Huerta, Rosario +1 more
openaire +3 more sources