9 documents found, page 1 of 1
VERTICALLY-RESOLVED CHARACTERIZATION OF THE FEBRUARY 2016 EXCEPTIONAL SAHARAN D...
Guerrero Rascado, Juan Luis; Costa, Maria João; Sicard, Michael; Gómez-Amo, J. L.; Benavent-Oltra, J. A.; Román, R.; Bortoli, Daniele; Marcos, C.An unusual Saharan dust outbreak occurred on 20-24 February 2016 over the Iberian Peninsula. This work focuses on the particle vertical distribution investigated at four EARLINET AERONET stations: Granada, Évora, Burjassot and Barcelona. This event was exceptional because: (i) Saharan dust outbreaks over the Iberian Peninsula are atypical during wintertime,(ii) the aerosol optical depth reached high values (up ...
Phylogeography of the Atlanto-Mediterranean sea cucumber Holothuria (Holothuria...
Borrero-Perez, G. H.; Gonzalez-Wanguemert, Mercedes; Marcos, C.; Perez-Ruzafa, A.We assessed the genetic structure of populations of the widely distributed sea cucumber Holothuria (Holothuria) mammata Grube, 1840, and investigated the effects of marine barriers to gene flow and historical processes. Several potential genetic breaks were considered, which would separate the Atlantic and Mediterranean basins, the isolated Macaronesian Islands from the other locations analysed, and the Western...
Connectivity patterns inferred from the genetic structure of white seabream (Di...
Gonzalez-Wanguemert, Mercedes; Canovas, Fernando; Perez-Ruzafa, A.; Marcos, C.; Alexandrino, PauloThemarine environment seems, at first sight, to be a homogeneousmediumlacking barriers to species dispersal. Nevertheless, populations of marine species show varying levels of gene flow and population differentiation, so barriers to gene flow can often be detected. Weaimto elucidate the role of oceanographical factors ingenerating connectivity among populations shaping the phylogeographical patterns in the mari...
Temporal genetic variation in populations of Diplodus sargus from the SW Medite...
Gonzalez-Wanguemert, Mercedes; Pérez-Ruzafa, Á.; Cánovas, F.; García-Charton, J. A.; Marcos, C.Population genetic studies on white sea bream Diplodus sargus have revealed different patterns in the subdivision of populations in the Mediterranean Sea. However, the stability of observed allele frequencies over time remains poorly tested. The aim of this study was to show that the genetic structure of D. sargus could significantly change over time by analysing temporal variations in allozymes. In order to de...
Are Taxonomic Distinctness measures compliant to other ecological indicators in...
Salas, F.; Patrício, J.; Marcos, C.; Pardal, M. A.; Pérez-Ruzafa, A.; Marques, J. C.Assessing the ecological status, a concept implemented in the European Water Framework Directive [EC, 2000. Directive of the European Parliament and of the Council 2000/60/EC establishing a framework for community action in the field of water policy PE-CONS 3639/1/00, p. 72], requires the application of methods capable of distinguishing different levels of ecological quality. The Average Taxonomic Distinctness ...
User-friendly guide for using benthic ecological indicators in coastal and mari...
Salas, F.; Marcos, C.; Neto, J. M.; Patrício, J.; Pérez-Ruzafa, A.; Marques, J. C.Experience demonstrates that none of the available measures on biological effects of pollution should be considered ideal. The use of a single approach does not seem appropriate due to the complexity inherent in assessing the environmental quality of a system. Rather, this should be evaluated by combining a suite of indices providing complementary information.; http://www.sciencedirect.com/science/article/B6VG5...
Genetic differentiation and gene flow of two sparidae subspecies, Diplodus sarg...
González-Wangüemert, Mercedes; Pérez-Ruzafa, Á.; García-Charton, J. A.; Marcos, C.A total of nine enzymes coded by 14 loci were assayed for each of six populations (from the north-eastern Atlantic and the Mediterranean) of two sea bream subspecies (Diplodus sargus sargus and Diplodus sargus cadenati). Diagnostic alleles were observed for each subspecies, although there were several common alleles. Estimates of variance in allele frequencies among samples (FST) revealed significant difference...
Application of the exergy index as ecological indicator of organically enrichme...
Salas, F.; Marcos, C.; Pérez-Ruzafa, A.; Marques, J. C.The increase of stress induced changes in marine environments caused by different types of marine pollution made necessary the search for indicators that assist in assessing pollution effects at the community level. The main goals, with a view to an effective management, are the early detection and evaluation of environmental responses to pollution and to avoid or mitigate negative impacts that different uses m...
Genetic differentiation of Diplodus sargus (Pisces: Sparidae) populations in th...
González-Wangüemert, Mercedes; Pérez-Ruzafa, Á.; Marcos, C.; García-Charton, J. A.Allozyme analysis of tissue samples of 1249 white sea bream Diplodus sargus from five localities of the south-west Mediterranean revealed a high degree of genetic polymorphism. The observed heterozygosity ranged from 0.4182 (Cape of Palos) to 0.3138 (Tabarca). Several populations were characterized by unique alleles. Examination of the spatial structure was performed using Nei’s distances and F-statistics, and ...