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Diurnal variation of precipitable water vapor over Central and South America

Geodesy and Geodynamics 2020年第6期11卷 426-441页

作者： Amalia Meza Luciano Mendoza María Paula Natali Clara Bianchi Laura Fernández laboratorio de meteorología espacial Atmosfera terrestreGeodesiaGeodinamicadiseno de Instrumentaly Astrometría(MAGGIA)Facultad de Ciencias Astronomicasy Geofísicas(FCAG)Universidad Nacional de La Plata(UNLP)Paseo del Bosque s/nB1900FWALa Plata(UNLP)Paseo del Bosque s/nB1900FWALa PlataArgentina Consejo Nacional de Investigacion Científicay Tecnica Godoy Cruz 2290C1425FQBBuenos AiresArgentina

Annual and seasonal diurnal precipitable water vapor(PWV)variations over Central and South America are analyzed for the period *** values were obtained from Global Navigation Satellite Systems(GNSS)observations of sixty-nine GNSS tracking *** by climate categories show that PWV values for temperate,polar and cold dry climate have a positive skewed distribution and for tropical climates(except for monsoon subtype)show a negative skewed *** diurnal PWV and surface temperatures(T)anomaly datasets are analyzed by using principal components analysis(PCA).The first two modes represent more than 90%of the PWV *** first PCA mode of PWV variability shows a maximum amplitude value in the late afternoon few hours later than the respective values for surface temperature(T),therefore the temperature and the surface conditions(to yield evaporation)could be the main agents producing this variability;PWV variability in inland stations are mainly represented by this *** second mode of PWV variability shows a maximum amplitude at midnight,a possible explanation of this behavior is the effect of the sea/valley *** coastal and valley stations are affected by this mode in most ***,the"undefined"stations,surrounded by several water bodies,are mainly affected by the second mode with negative *** the seasonal analysis,both the undefined and valley stations constitute the main cases that show a sea or valley breeze only during some seasons,while the rest of the year they present a behavior according to their temperature and the surface *** a result,the PCA proves to be a useful numerical tool to represent the main sub-daily PWV variabilities.

关键词： Precipitable water vapor(PWV) Global navigation satellite systems(GNSS) Koppen and Geiger climate type classification(K-G) Surface temperature Principal component analysis(PCA)

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Abundance and harvest strategy of three species of clam (BivalviaVeneridae) located in new fishing banks in the Gulf of California

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Aquaculture and Fisheries 2021年第5期6卷 506-512页

作者： Jorge A.López-Rocha Francisco J.Fernández-Rivera Melo Ernesto Gastélum-Nava Estefani Larios-Castro laboratorio de Análisis espacial de Zonas Costeras Unidad Multidisciplinaria de Docencia e InvestigaciónFacultad de CienciasUniversidad Nacional Autónoma de M´exicoSisal97356YucatánMexico Comunidad y Biodiversidad A.C Guaymas85448SonoraMexico Centro de Investigaciones Biológicas del Noroeste La Paz02320BCSMexico

Clams of the family Veneridae in northwest Mexico have traditionally been exploited by small-scale *** their socioeconomic importance for coastal communities in the region,most catch zones are currently in decline due to a lack of harvest control regulations that would impede the depletion of local fishing *** Puerto Libertad,in the northern reaches of the Gulf of California,banks of commercially unexploited clam species,including Megapitaria aurantiaca,*** and Dosinia ponderosa,were *** adequate management and exploitation of these banks requires developing basic knowledge regarding the abundance of the species and establishing reference points to determine clear,simple harvest *** goal of this study was to identify population abundance in these banks and ascertain the parameters of the life history of the species found there in order to propose a harvest strategy that will allow the sustainable exploitation of this resource.A total of 288 transects were conducted in the two clam banks to identify species *** was determined using a geostatistical *** relative cohort biomass-at-length was estimated to evaluate the effect of different lengths of first capture on the remaining *** on these data,two harvest control regulations were proposed:a maximum catch(Cmax)of 10%of the total estimated biomass,and a minimum optimal catch size(Lc).The abundance estimates were ***(266,293-381,881 individuals);***(2,779,100-3,455,597);and ***(408,783-447,391).The harvest control regulations proposed are:***,Cmax=2.98 t and Lc=50.33 mm;***,Cmax=49.67 t and Lc=103.44 mm;and ***,Cmax=15.87 t and Lc=80.85 *** results are important as reference information for implementing harvest strategies in clam-fishing banks,and as a contribution to the management and sustainable exploitation of fisheries in the region.

关键词： Bivalves Fishery management Population size Sea of cortez Veneridae

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The failed invasion of Harmonia axyridis in the Azores, Portugal: Climatic restriction or wrong population origin?

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Insect Science 2021年第1期28卷 238-250页

作者： Alberto J.Alaniz Antonio OSoares Pablo M.Vergara Eduardo Brito de Azevedo Audrey A.Grez laboratorio de Ecologia de Ambientes Fragmentados Departamento de Ciencias Biologicas AnimatesFacultad de Ciencias VeterinariasPecuariasUniversidad de ChileChile Centro de Estudios en Ecologia espacial y Medio Ambiente EcogeografiaSantiagoChile departamento de Gestion Agra ria Facultad TecnologicaUniversidad de Santiago de ChileChile Center for Ecology Evolution and Environmental Changes and Azorean Biodiversity GroupFaculty of Sciences and TechnologyUniversity of the AzoresPonta DelgadaPortugal Center of Climate Departamento de Ciencias AgrariasMeteorology and Global Change of the University of the Azores(CCMMG-CITA-A)Universidade dos AzoresAngra do HeroismoPortugal

We tested two questions:(i)whether the climatic conditions of the Azorean Islands in Portugal may have restricted the invasion of Harmonia axyridis across this archipelago and(ii)determine what population of this species could have a higher probability of invading the *** used MaxEnt to project the climate requirements of different *** populations from three regions of the world,and the potential global niche of the species in the Azorean *** we assessed the suitability of the islands for each of the three *** populations and global potential niche through histograms analysis,Principal Component Analysis(PCA)of climate variables,and a variable-by-variable assessment of the suitability response curves compared with the climatic conditions of the *** conditions of the Azores are less suitable for the *** native Asian populations of ***,and more suitable for European populations and the global potential *** PCA showed that the climatic conditions of the islands differed from the climatic requirements of *** difference is mainly explained by precipitation of the wettest month,isothermality,and the minimum temperature of the coldest *** concluded that the climatic conditions of the Azores could have influenced the establishment and spread of *** on these islands from *** results showed that abiotic resistance represented by the climate of the potentially colonizable zones could hinder the establishment of invasive insects,but it could vary depending of the origin of the colonizing population.

关键词： climatic suitability Harlequin ladybird Invasibility invasive alien species Niche analysis Species Distribution Model

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Genetic Diversity of the Endemic Xantus’ Hummingbird Using 16 Novel Polymorphic Microsatellite Loci, and Their Cross Amplification between Six Related Species

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Open Journal of Genetics 2016年第1期6卷 19-27页

作者： Cristina González-Rubio Sanvicente Ricardo Rodríguez-Estrella Oscar Adrián Lozano-Garza Francisco J. García-de-León laboratorio de Genética para la Conservación Centro de Investigaciones Biológicas del Noroeste La Paz Mexico laboratorio de Análisis espacial Ecología y Conservación Centro de Investigaciones Biológicas del Noroeste La Paz Mexico

A set of 16 microsatellite loci was developed and characterized for the Xantus’ hummingbird (Hylocharis xantusii) by using 454 next-generation sequencing. Twenty-five H. xantusii samples from one population were genotyped;all loci were polymorphic, with the number of alleles ranging from three to ten. The mean observed heterozygosity was 0.681 for all loci. No significant linkage disequilibrium was detected, but five loci (Hxan05, 06, 09, 13 and 14) showed deviation from Hardy-Weinberg equilibrium. These microsatellite loci are the first to be characterized for H. xantusii. A moderate to high level of cross-species amplification was observed across the six hummingbird species (31% - 87.5%), with the best cross amplification results observed in the closest related species (H. leucotis, Cynanthus latirostris, Calypte costae). The availability of these molecular tools allows assessing questions integrating population genetics, ecology, conservation, and evolutionary history for H. xantusii and for other phyogenetically related species.

关键词： Baja California Peninsula Hylocharis xantusii Microsatellites Pyrosequencing Cross-Species Amplification

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