Results 31 to 40 of about 2,590 (180)

Environmental factors affecting larval fish community in the salt marsh area of Guadiana estuary (Algarve, Portugal)

Scientia Marina, 2015
Salt marsh areas in the Guadiana estuary are important nursery sites for many fish species of commercial and recreational value. More effective protection measures should be adopted as the area is highly affected by anthropogenic and natural threats ...
Renata Gonçalves, Ana Dulce Correia, Natasa Atanasova, Maria Alexandra Teodósio, Radhouan Ben-Hamadou, Luís Chícharo   +5 more
doaj   +1 more source

Surficial sediment texture database for the south-western Iberian Atlantic margin [PDF]

, 2018
Assessing the impact of changes on the environment driven by natural or anthropogenic forcers includes the comparison between antecedent and post-event conditions.
Costas, Susana, de Sousa, Luisa B., Ferreira, Oscar, Mendes, Isabel, Ramires, Margarida   +4 more
core   +2 more sources

Preliminary Insight into Winter Native Fish Assemblages in Guadiana Estuary Salt Marshes Coping with Environmental Variability and Non-Indigenous Fish Introduction

Fishes, 2017
This work aims to undertake a preliminary characterization of winter fish assemblages in the salt marsh areas of Guadiana lower estuary (South-East Portugal) and discusses the potential risks of habitat dominance by a non-indigenous species (NIS).
Renata Gonçalves, Maria Alexandra Teodósio, Joana Cruz, Radhouan Ben-Hamadou, Ana Dulce Correia, Luís Chícharo   +5 more
doaj   +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

The Impact of Sea Level Rise in the Guadiana Estuary [PDF]

, 2019
Understanding the impact of sea level rise on coastal areas is crucial as a large percentage of the population live on the coast. This study uses computational tools to examine how two major consequences of sea level rise: salt intrusion and an increase in water volume affect the hydrodynamics and flooding areas of a major estuary in the Iberian ...
Lara Mills, João Janeiro, Flávio Martins   +2 more
openaire   +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., Domingues, Rita B., Galvão, Helena M.   +2 more
core   +1 more source

Blackfordia virginica in Non-Native Distribution Range: A Potential Food Source for Humans?

Diversity
The seasonal occurrence of the Black Sea jellyfish Blackfordia virginica Mayer, 1910 blooms is a reason of concern in the Guadiana estuary in the South of Portugal (South-West Europe), causing considerable economic and ecological impacts to fisheries ...
Mariana Cruz, Ester Dias, Luísa Custódio, João Encarnação, Joana Cruz, Vânia Baptista, Maria Alexandra Teodósio   +6 more
doaj   +1 more source

Unraveling the Mechanisms That Cause Cyclic Channel‐Shoal Dynamics of Ebb‐Tidal Deltas: A Numerical Modeling Study

Journal of Geophysical Research: Earth Surface, Volume 124, Issue 12, Page 2778-2797, December 2019., 2019
The morphodynamics of many ebb‐tidal deltas include cyclic patterns of channel deflection and breaching associated with sandy shoals migrating and attaching to the downdrift coast. These channel‐shoal dynamics result from the complex combination of tides and waves; however, their precise role and the physical mechanisms forcing the cyclic patterns are ...
Klaas J. H. Lenstra, Wim Ridderinkhof, Maarten van der Vegt   +2 more
wiley   +1 more source

Bird collisions with power lines: Prioritizing species and areas by estimating potential population‐level impacts

Diversity and Distributions, Volume 25, Issue 6, Page 975-982, June 2019., 2019
Abstract Aim Power lines can represent an important source of bird mortality through collision. The identification of more susceptible species, in terms of expected population‐level impacts, requires detailed biological and mortality information that is often difficult to obtain.
Marcello D’Amico, Ricardo C. Martins, Jose M. Álvarez‐Martínez, Miguel Porto, Rafael Barrientos, Francisco Moreira, Piero Visconti   +6 more
wiley   +1 more source

Natural and human-induced Holocene paleoenvironmental changes on the Guadiana shelf (northern Gulf of Cadiz) [PDF]

, 2012
Three contrasting sedimentary environments on the continental shelf off the Guadiana River (northern Gulf of Cadiz) were integrated in a chronological framework and analysed in terms of sedimentology and benthic foraminiferal assemblages to understand ...
Alarcão J, Altenbach AV, Chester DK, Costa C, Costa M, Dias JMA, Ellis BF, F Rosa, Fabião C, FJ Lobo, Gonzalez R, Gonzalez R, I Mendes, J Schönfeld, JA Dias, Jones RW, Kaminski MA, Lamb HH, Levy A, Loeblich AR, Loureiro JJM, Martins V, Mendes I, Murray J, Pinheiro J, Portela LI, Pujos M, R Gonzalez, Roberts N, Sarnthein M, Teixeira SB, Velozo FJ, Villanueva PG, Villanueva PG, Villanueva PG, Ó Ferreira   +35 more
core   +1 more source