Capability of a regional climate model to simulate climate variables requested for water balance computation: a case study over northeastern France     

Damien Boulard  Thierry Castel  Pierre Camberlin  Anne-Sophie Sergent  Nathalie Bréda  Vincent Badeau  Aurélien Rossi  Benjamin Pohl 《Climate Dynamics》2016,46(9-10):2689-2716

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Magmatic evolution in the N-Gondwana margin related to the opening of the Rheic Ocean—evidence from the Upper Parautochthon of the Galicia-Trás-os-Montes Zone and from the Central Iberian Zone (NW Iberian Massif)     

Ícaro Dias da Silva  Rubén Díez Fernández  Alejandro Díez-Montes  Emilio González Clavijo  David A. Foster 《International Journal of Earth Sciences》2016,105(4):1127-1151

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Seasonal contamination of surface waters close to an abandoned Sn-W mine,northeast Portugal     

Sérgio P. Lopes  M. Manuela Vinha G. Silva  Elsa M. C. Gomes  Paula C. S. Carvalho  Ana M. R. Neiva 《Environmental Earth Sciences》2016,75(22):1438

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Soil map and 3D virtual tour using a database of soil-forming factors     

A. M. Martínez-Graña  J. L. Goy  C. Zazo  P. G. Silva 《Environmental Earth Sciences》2016,75(21):1402

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Mangrove habitat use by fishes in Southeastern Brazil: are there temporal changes in the structure of the community?          下载免费PDF全文

Márcia C. C. de Azevedo  Antonio G. da Cruz‐Filho  Francisco G. Araújo 《Marine Ecology》2016,37(6):1223-1238

We compared fish community structure in Guaratiba Mangrove, SE Brazil, among three seasons of the hydrological cycle [(i) spring, increasing temperature and rainfall, decreasing salinity; (ii) summer/early fall, high temperature and rainfall, intermediate salinity; (iii) late fall/winter, low temperature and rainfall, high salinity] and between the years 2002–2003 and 2008–2009. The aim was to test the hypothesis that the fish community structure changes seasonally, associated with seasonal changes in environmental conditions, and that changes occurred between the two yearly periods because of increased anthropogenic activities. The sampling protocol for the two surveys was identical. A total of 63 species was recorded, with 38 species occurring in 2002–2003, and 53 species in 2008–2009. The main changes in the mangrove's fish assemblage between 2002–2003 and 2008–2009 were (i) an increase in species richness, fish density and total biomass; and (ii) an increase in the zoobenthivorous species of gerreids Eucinostomus argenteus, Diapterus rhombeus and Ulaema lefroyi, and a decrease in the planktivorous clupeid Harengula clupeola. Other abundant species, such as the opportunistic atherinopsid. Atherinella brasiliensis, the detritivorous mullet Mugil liza and the zoobenthivorous pufferfish Sphoeroides testudineus did not differ in abundance between the two yearly periods. Ten species occurred only in 2002–2003, and 23 species only in 2008–2009, indicating significant changes in community structure over the 6‐year period. Seasonal changes in community structure were more conspicuous in 2008–2009, when species abundance and richness were greatest. The highest fish abundance was recorded in spring and in summer/early fall, and the lowest in late fall/winter. The increased abundance and richness over time may be at least partially attributable to protection policies because of the effective implementation of a biological reserve in the area.  相似文献   

Nitrogen uptake in light versus darkness of the seagrass Zostera noltei: integration with carbon metabolism          下载免费PDF全文

Ana Alexandre  João Silva  Rui Santos 《Marine Ecology》2016,37(5):1050-1056

We conducted a study that shows that light and dark conditions do not affect the uptake rates of ammonium and nitrate by the seagrass Zostera noltei. This is an important advantage over some seaweed species in which these rates are severely reduced at night. In the light, the ammonium uptake rates were initially higher (15 and 20 μmol·g^?1·h^?1) and stabilized at a rate of 5 μmol·g^?1·h^?1 after 1 h, whereas in the dark the rates remained constant at a rate of 10 μmol·g^?1·h^?1 over the first 180 min of incubation. The rates of nitrate uptake in the light were high within the first 120 min of incubation (7.2–11.1 μmol·g^?1·h^?1) and decreased afterwards to lower values (0.8–3.9 μmol·g^?1·h^?1), whereas in the dark the rates fluctuated around 0.0–11.1 μmol·g^?1·h^?1 throughout the whole incubation time (7 h). The soluble sugar content of Z. noltei leaves increased significantly with both ammonium and nitrate incubations in the light, indicating the metabolic outcome of photosynthesis. In the dark, there was no significant variation in either the soluble sugar or in the starch content of leaves, rhizomes or roots in either the ammonium or nitrate incubations. However, the total starch content of plants decreased at night whereas the total soluble sugars increased, suggesting a process of starch catabolism to generate energy with the consequent production of smaller monosaccharide products. The starch content of rhizomes decreased significantly during the light incubations with nitrate but not with ammonium. These results suggest that carbohydrate mobilization is necessary for Z. noltei to account for extra energetic costs needed for the uptake and assimilation of nitrate. Furthermore, our results suggest that nitrate uptake, at least during the day, requires the mobilization of starch whereas the uptake of ammonium does not.  相似文献   

Animal thermal comfort index for the state of Paraíba,Brazil: trend,influencing factors,and mitigating measures     

da Silva  Valquiria Cordeiro  de Sousa Nascimento  Robson  Neto  José Pinheiro Lopes  de Melo Lopes  Fernanda Fernandes  Miranda  Jaciara Ribeiro  Furtado  Dermeval Araújo 《Theoretical and Applied Climatology》2022,147(1-2):523-534

Theoretical and Applied Climatology - The present work had the objective to determine the tendency and the influence percentage of climatic variables on the Temperature and Humidity Index (THI) in...  相似文献   

Predicting coffee yield based on agroclimatic data and machine learning     

de Oliveira Aparecido  Lucas Eduardo  Lorençone  João Antonio  Lorençone  Pedro Antonio  Torsoni  Guilherme Botega  Lima  Rafael Fausto  dade Silva CabralMoraes  José Reinaldo 《Theoretical and Applied Climatology》2022,148(3-4):899-914

Theoretical and Applied Climatology - Climate directly and indirectly influences agriculture, being the main responsible for low and high yields. Prior knowledge on yield helps coffee farmers in...  相似文献   

Multi-model climate projections of the main cyclogenesis hot-spots and associated winds over the eastern coast of South America     

de Jesus  Eduardo Marcos  da Rocha  Rosmeri Porfírio  Crespo  Natália Machado  Reboita  Michelle Simões  Gozzo  Luiz Felippe 《Climate Dynamics》2021,56(1-2):537-557

Climate Dynamics - In this study, multi-model ensembles are used to understand regional features of future climate trends of cyclones and associated winds in eastern South America. For this, we...  相似文献   

Significance of OH,F and Cl content in biotite during metamorphism of the Western Adamello contact aureole     

Guillaume?SironEmail authorView author&#;s OrcID profile  Lukas?Baumgartner  Anne-Sophie?Bouvier 《Contributions to Mineralogy and Petrology》2018,173(8):63

The hydroxyl (O(4)) site composition of biotite can in principle be used to retrieve information about fluid composition during fluid–rock interaction; however, due to low F and Cl content, as well as difficulties involved with analyzing the H₂O content using in situ techniques, measuring these species in biotite has remained an elusive goal. Here we present high-precision secondary ion mass spectrometry (SIMS) OH–F–Cl measurements from biotite within metapelites from the Western Adamello Tonalite (WAT) contact aureole, Northern Italy. Fluorine, chlorine and hydrogen are analyzed on the SIMS sequentially by peak-hopping at the same biotite spot; H₂O, F and Cl content were measured with a precision (1σ) οφ 0.06 ωτ%, 50 ανδ 5 ππµ, ρεσπεχτι?ελψ. The compositions of isolated biotite crystals in andalusite are compared with that of biotite in the matrix, documenting that halogens and H₂O behave refractory in biotite during the time scale of contact metamorphism. The H₂O and halogen contents of biotite are mostly locked in during the prograde to peak formation of biotite, and are not reset during further heating or cooling, unless significant biotite recrystallization occurs. It also appears that both Ti content and X_Mg of the biotite from the Western Adamello contact aureole were not significantly reset during cooling. The concentration of F and Cl does not vary systematically with metamorphic grade, which indicates that these species reflect initial compositions. No significant Rayleigh fractionation behavior was observed for these elements. H₂O variations in the biotite from samples throughout the Western Adamello contact aureole suggest that Al-oxy substitution partially controls the variations in OH content through charge balance of the type R^2+,VI + OH^? = Al^3+,VI + O^2? + H₂, while the Ti-oxy substitution does not seem to influence the O(4) site occupation. The main titanium substitution appears to be the Ti-vacancy (\({\text{2}}{{\text{R}}^{{\text{2}}+}}~=~{\text{T}}{{\text{i}}^{{\text{4}}+}}~+\,{\square ^{{\text{VI}}}}\)) exchange. Variations in H₂O and halogen concentrations in biotite define sub mm-scale areas of localized equilibration, even for biotite recrystallized during dehydration reactions that produced large amounts of fluid (chlorite or muscovite breakdown). Similar systematics were observed for Ti⁴⁺ and Al³⁺. These findings further support the increasing number of observations that kinetics control much of the mineralogical reactions occurring in contact aureoles, and hence care is advised in using equilibrium thermodynamics in this environment.  相似文献