Forty-five years of oceanographic and meteorological observations at a coastal station in the NW Mediterranean: a ground truth for satellite observations     

Salat  Jordi  Pascual  Josep  Flexas  Mar  Chin  Toshio Michael  Vazquez-Cuervo  Jorge 《Ocean Dynamics》2019,69(9):1067-1084

Ocean Dynamics - Marine and atmospheric parameters, including temperature observations from surface to 80 m (at 6 depths) are measured since September 1973 on a higher-than-weekly...  相似文献   

Assessment of Holothuria arguinensis feeding rate,growth and absorption efficiency under aquaculture conditions     

Jorge A. Domínguez-Godino  Mercedes González-Wangüemert 《新西兰海洋与淡水研究杂志》2019,53(1):60-76

Holothuria arguinensis is a potential species for sea cucumber aquaculture in Europe. In a first experiment, feeding rate (FR), growth, absorption efficiency (AE) and survival of adults (135.01?±?10.87?g eviscerated weight) were assessed under sediment tank conditions. In a second experiment, the feasibility to use sea bream (Sparus aurata) biodeposits as a food source was studied for adults (168.69?±?14.59?g eviscerated weight). Individuals in the first experiment showed an increase of weight (specific growth rate (SGR)?=?0.2% d^?1), positive FRs and mean value of AE close to 80% with a mean organic matter content of 90.07?±?11.5?mg/g in the offered sediment. Sea cucumbers fed with fish biodeposits showed a reduction of weight (SGR??1), low FRs and negative values of AE. The influence of low salinity and temperature during experiments should be considered to explain these results. Indeed, sea cucumbers can be affected by a decrease of these parameters during winter months resulting in a period of inactivity.  相似文献   

Ground Penetrating Radar Applied to Monumental Stone Conservation: Application to the Rock Necropolis of San Vítor de Barxacova in NW Spain     

Solla  Mercedes  Buceta-Bruneti  Gonzalo  Elseicy  Ahmed  Nieto-Muñiz  Breogán 《Surveys in Geophysics》2022,43(5):1587-1606

Surveys in Geophysics - This paper deals with the application of the Ground Penetrating Radar (GPR) method in the assessment of stone monuments. Compilation of published works and a discussion of...  相似文献   

The contribution of the major planet search surveys to EChO target selection     

Giuseppina Micela  Gáspár Á. Bakos  Mercedes Lopez-Morales  Pierre F. L. Maxted  Isabella Pagano  Alessandro Sozzetti  Peter J. Wheatley 《Experimental Astronomy》2015,40(2-3):577-593

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Future variability of droughts in three Mediterranean catchments   总被引：3，自引：3，他引：0  

Lopez-Bustins  Joan A.  Pascual  Diana  Pla  Eduard  Retana  Javier 《Natural Hazards》2013,66(3):1405-1429

This study investigates the intensity change in typhoons and storm surges surrounding the Korean Peninsula under global warming conditions as obtained from the MPI_ECHAM5 climate model using the A1B series. The authors use the Cyclostationary Empirical Orthogonal Function to estimate future background fields for typhoon simulations from twenty-first-century prediction results. A series of numerical experiments applies WRF (Weather Research and Forecasting) and POM (Prinston Ocean Model) models to simulate two historical typhoons, Maemi (2003) and Rusa (2002), and associated storm surges under real historical and future warming conditions. Applying numerical experiments to two typhoons, this study found that their central pressure dropped about 19 and 17 hPa, respectively, when considering the future sea surface temperature (a warming of 3.9 °C for 100 years) over the East China Sea (Exp. 1). The associated enhancement of storm surge height ranged from 16 to 67 cm along the southern coast of the Korean Peninsula. However, when the study considered global warming conditions for other atmospheric variables such as sea-level pressure, air temperature, relative humidity, geopotential height, and wind in the typhoon simulations (Exp. 2), the intensities of the two typhoons and their associated surge heights scarcely increased compared to the results of Exp. 1. Analyzing projected atmospheric variables, the authors found that air temperatures at the top of the storm around 200 hPa increased more than those at the surface in tropical and mid-latitudes. The reduced vertical temperature difference provided an unfavorable condition in the typhoon’s development even under conditions of global warming. This suggests that global warming may not always correlate with a large increase in the number of intense cyclones and/or an increase in associated storm surges.  相似文献   

Nutrients and Abiotic Stress Interact to Control Ergot Plant Disease in a SW Atlantic Salt Marsh     

Pedro Daleo  Juan Alberti  Jesus Pascual  Oscar Iribarne 《Estuaries and Coasts》2013,36(5):1093-1097

Over the last decades, human activities have strongly affected ecosystems, with pervasive increases in nutrient loadings, abiotic stress, and altered herbivore pressure. The evaluation of how those environmental factors interact to influence plant–pathogen interactions under natural conditions becomes essential to fully understand the ecology of diseases and anticipate the possible effects of global change on natural and agricultural systems. In a SW Atlantic salt marsh, we performed a field factorial experiment to evaluate the effect of herbivory, salinity, and nutrient availability, three main limiting factors for salt marsh plant growth, on the infection of the fungus Claviceps purpurea (ergot) upon the cordgrass Spartina densiflora. Results show that herbivory has no effect but both nutrients and salinity increase fungal infection. The combined effect of salinity and nutrients is not additive but interactive. Salinity stress increases infection at ambient nutrient levels but in combination with fertilizer it buffers the higher infection produced by increased nutrient availability. Since both, nitrogen availability and salinity are factors predicted to globally increase due to human impact on ecosystems, this interaction between environmental factors and ergot infection can have strong effects on natural and productive agricultural systems.  相似文献   

An urban geomonumental route focusing on the petrological and decay features of traditional building stones used in Madrid, Spain     

Elena Mercedes Perez-Monserrat  Monica Alvarez de Buergo  Miguel Gomez-Heras  Maria Jose Varas Muriel  Rafael Fort Gonzalez 《Environmental Earth Sciences》2013,69(4):1071-1084

The stone traditionally used to build cities contributes to their personality and attests to the geological substrate on which they stand. While stone decay in the built heritage can be attributed to a number of causes, anthropic activity has a particularly significant impact. The geomonumental routes project is one of the initiatives proposed in recent years for urban routes that convey geological fundamentals by observing the rocks present in heritage structures. Its innovative approach addresses traditional stone properties, original quarrying sites and mechanisms of decay. Madrid’s Royal Palace is a fine example of the use of traditional building stone in the centre of the Iberian Peninsula. In the geomonumental route proposed, the building doubles as an in situ laboratory that affords an overview of the main petrological properties of the two traditional stones most commonly used in the city’s built heritage, the forms of decay they are subject and the factors underlying such alterations. This route constitutes a tool for showing the main petrological features and decay forms in traditional building stones found in urban heritage façades, with a special focus on anthropic impact, primarily air pollution and the use of conservation treatments that time has proven to be unsuitable.  相似文献   

Lung cancer risk associated with residential proximity to industrial installations: a spatial analysis     

M. F. López-Cima  J. García-Pérez  B. Pérez-Gómez  N. Aragonés  G. López-Abente  T. Pascual  A. Tardón  M. Pollán 《International Journal of Environmental Science and Technology》2013,10(5):891-902

Lung cancer is the most common cause of cancer-related death and thus a major public health problem. While lung cancer frequency might be partially attributable to smoking habit and occupational exposure, the role of industrial pollution also needs to be assessed. To ascertain the possible effect of residential proximity to industrial installations on lung cancer risk in Asturias, an industrial region in Spain, taking into account the type of industrial activity and carcinogenic substances released. We conducted a hospital-based case–control study covering 700 lung cancer patients and 700 controls recruited in Asturias, matched individually by ethnicity, hospital, age, and sex. Distances were computed from the respective participants’ residential locations to the 48 industrial facilities governed by the Integrated Pollution Prevention and Control Act 16/2002 and included in the European Pollutant Release and Transfer Register, and located in the study areas. Using logistic regression, odds ratios (ORs) and 95 % confidence intervals (95 % CIs) were calculated and adjusted for sex, age, hospital area, tobacco consumption, family history of cancer, area of residence, and occupation. Excess risk of lung cancer was observed for individuals living near industrial installations (OR = 1.43; 95 % CI = 1.08–1.89), particularly metal industries (OR = 1.40; 95 % CI = 1.05–1.87), cement plants (OR = 4.81; 95 % CI = 1.20–19.19), and shipyards (OR = 1.69; 95 % CI = 1.17–2.43). Residents living close to industrial facilities releasing dioxins displayed a high, though non-statistically significant, excess risk of lung cancer (OR = 1.62; 95 % CI = 0.86–3.07). This study suggests a possible association between lung cancer risk and proximity to industrial installations, specifically metal industries, cement plants, and shipyards.  相似文献   

Dams in the last large free-flowing rivers of Patagonia,the Santa Cruz River,environmental features,and macroinvertebrate community     

Marina Tagliaferro  María Laura Miserendino  Ana Liberoff  Analia Quiroga  Miguel Pascual 《Limnologica》2013,43(6):500-509

Three large rivers have their headwaters in the Patagonian Ice Fields (PIFs) in the Andes Mountains, the largest mid-latitude ice masses on Earth: Santa Cruz, Baker and Pascua. They are the last large free flowing rivers in Patagonia, but plans are advanced for building dams for hydroelectric power generation. The three PIF rivers, with a discharge dominated by ice melt, share a common, unique hydrograph compared to that of the other eight large rivers in the region: a distinct seasonal cycle, and an extremely stable discharge, with much lower variability than other rivers. In this study we present the first extensive survey of habitats and benthic macroinvertebrates in the least studied system, the Santa Cruz River. We assess how much of the natural capital provided and sustained by benthic invertebrates are expected to be lost by flooding and discuss how dams would affect riverine habitat and biota. In the Santa Cruz River, we conducted an intensive field survey during September 2010; a total of 52 sites located at regular 6 km intervals were sampled along the 310 river-km for macroinvertebrates and seventeen habitat variables. Although some habitat structure is apparent at the local scale, the Santa Cruz River could be described as very homogeneous. Macroinvertebrate density and the richness (38 genera) found in the Santa Cruz River resulted to be one of the lowest in comparison with 42 other Patagonian rivers. Albeit weak, the structure of the macroinvertebrates assemblages was successfully described by a reduced set of variables. The reduced flow variation and the lack of bed scouring flows have a direct and negative effect on the heterogeneity of riverbeds and banks. The high turbidity of the Santa Cruz River may also contribute to shorter food webs, by affecting autotrophic production, general trophic structure, and overall macroinvertebrate productivity and diversity. Dams will obliterate 51% of the lotic environment, including the most productive sections of the river according to our macroinvertebrate data. Since Santa Cruz River has a naturally homogeneous flow cycle, dams may provide more variable flows and more diverse habitat. Our data provide critically valuable baseline information to understand the effects of dams on the unique set of glacial driven large rivers of Patagonia.  相似文献   

Fusion of airborne LiDAR and multispectral sensors reveals synergic capabilities in forest structure characterization     

Jose A. Manzanera  Antonio García-Abril  Cristina Pascual  Rosario Tejera  Susana Martín-Fernández  Timo Tokola 《地理信息系统科学与遥感》2016,53(6):723-738

Forest stand structure is an important concept for ecology and planning in sustainable forest management. In this article, we consider that the incorporation of complementary multispectral information from optical sensors to Light Detection and Ranging (LiDAR) may be advantageous, especially through data fusion by back-projecting the LiDAR points onto the multispectral image. A multivariate data set of both LiDAR and multispectral metrics was related with a multivariate data set of stand structural variables measured in a Scots pine forest through canonical correlation analysis (CCA). Four statistically significant pairs of canonical variables were found, which explained 83.0% accumulated variance. The first pair of canonical variables related indicators of stand development, i.e. height and volume, with LiDAR height metrics. CCA also found attributes describing stand density to be related to LiDAR and spectral variables determining canopy coverage. Other canonical variables pertained to Lorenz curve-derived attributes, which are measures of within-stand tree size variability and heterogeneity, able to discriminate even-sized from uneven-sized stands. The most relevant result was to find that metrics derived from the multispectral sensor showed significant explanatory potential for the prediction of these structural attributes. Therefore, we concluded that metrics derived from the optical sensor have potential for complementing the information from the LiDAR sensor in describing structural properties of forest stands. We recommend the use of back-projecting for jointly exploiting the synergies of both sensors using similar types of metrics as they are customary in forestry applications of LiDAR.  相似文献