969 resultados para spider inventories
Resumo:
El gasterópodo marino Patella ferruginea se encuentra incluido en los Catálogos Español y Andaluz de Especies Amenazadas en la categoría “En peligro de extinción”. En 2008 fue aprobada la Estrategia de Conservación Nacional de la especie que establece la realización de un seguimiento de la población cada cuatro años. En Andalucía se ha realizado en 2010 el seguimiento de la especie empleando dos tipos de metodología: los “Controles de crecimiento”, mediante marcaje de ejemplares, y los “Censos exhaustivos” en “Tramos” de costa, para intentar detectar todos los individuos presentes. En el censo de 2010 se han muestreado unos 21 km de costa en 34 localidades, un 5% del litoral andaluz con presencia de la especie, lo que constituye un esfuerzo considerable, pero asumible para el control periódico de la misma. La densidad media detectada es muy baja, de 0,048 ind./m. El mayor número de individuos se encuentra en Cádiz y la población mejor estructurada en la isla de Alborán. Se estima que el tamaño actual de la población en Andalucía ronda los 1.800 ejemplares, lo que constituye un aumento con respecto a inventarios anteriores. Sin embargo, el contingente es muy reducido para garantizar la supervivencia de la especie. La categoría de protección propuesta por el Libro Rojo de los Invertebrados de Andalucía, “En peligro crítico” (MORENO y ARROYO, 2008), debe considerarse, por lo tanto, la más adecuada para la lapa ferruginosa siguiendo los criterios de valoración de la UICN (2001).
Resumo:
La conservation des groupements à Pistacia atlantica dans la région de Béchar est actuellement menacée par une forte pression humaine et animale. Ce travail consiste à proposer une analyse phyto-écologique fine en se basant sur la dynamique de végétation et les inventaires floristiques. Les explications sont étayées par une analyse statistique (AFC) afin de mieux cerner les facteurs écologiques prépondérants. Nous savons très bien que Pistacia atlantica est une espèce d’avenir pour l’Algérie occidentale, son adaptation au stress écologique lui permet une dynamique et une remontée biologique certaine. Cette espèce peut vivre dans des endroits très secs, de 700 à 1200m d’altitude où la pluviométrie ne dépasse guère les 100 mm/an, avec une température maximale de 42°C et un quotient pluviothermique (Q2) supérieur à 7. La diversité floristique du groupement à Pistacia atlantica est très particulière du fait de sa caractérisation biologique, systématique et phytogéographique. Cet examen fait ressortir l’importance des espèces Saharienne-Endémiques grâce à une adaptation et une résistance plus favorables sous bioclimat typiquement saharien.
Resumo:
Wildfires produce a significant release of gases and particles affecting climate and air quality. In the Mediterranean region, shrublands significantly contribute to burned areas and may show specific emission profiles. Our objective was to depict and quantify the primary-derived aerosols and precursors of secondary particulate species released during shrubland experimental fires, in which fire-line intensity values were equivalent to those of moderate shrubland wildfires, by using a number of different methodologies for the characterization of organic and inorganic compounds in both gas-phase and particulate-phase. Emissions of PM mass, particle number concentrations and organic and inorganic PMx components during flaming and smouldering phases were characterized in a field shrubland fire experiment. Our results revealed a clear prevalence of K+ and SO42- as inorganic ions released during the flaming-smouldering processes, accounting for 68 to 80% of the inorganic soluble fraction. During the residual-smouldering phases, in addition to K+ and SO42-, Ca2+ was found in significant amounts probably due the predominance of re-suspension processes (ashes and soil dust) over other emission sources during this stage. Concerning organic markers, the chromatograms were dominated by phenols, n-alkanals and n-alkanones, as well as by alcohol biomarkers in all the PMx fractions investigated. Levoglucosan was the most abundant degradation compound with maximum emission factors between 182 and 261 mg kg-1 in PM2.5 and PM10 respectively. However, levoglucosan was also observed in significant amounts in the gas-phase. The most representative organic volatile constituents in the smoke samples were alcohols, carbonyls, acids, monocyclic and bicyclic arenes, isoprenoids and alkanes compounds. The emission factors obtained in this study may contribute to the validation and improvement of national and international emission inventories of this intricate and diffuse emission source.
Resumo:
Este estudio ofrece una revisión de la teoría tridimensional propuesta por Lang (1968), quien mantiene que la ansiedad se manifiesta según un triple sistema de respuesta (cognitivo, fisiológico y motor o conductual) que pueden ser discordantes. Estos tres sistemas, regulados por normas diferentes, dan lugar a perfiles de respuesta diferenciales, los cuales será necesario evaluar por separado para, posteriormente, elegir el método de tratamiento más adecuado. En esta línea, el presente estudio ofrece una revisión de investigaciones que, hasta el día de hoy, han apoyado la teoría propuesta por Lang. Finalmente, este estudio revisa diferentes cuestionarios, inventarios y escalas construidos desde la teoría propuesta por Lang, revelando que, en la actualidad, la teoría tridimensional de la ansiedad continúa siendo aplicada en el ámbito clínico, de la salud y el escolar, lo que denota su actualidad, relevancia y practicidad.
Resumo:
El objetivo de este trabajo fue doble. En primer lugar se describen los cuestionarios, inventarios y escalas de ansiedad escolar elaborados y validados para población infantil y adolescente: Cuestionario de Ansiedad Escolar, Inventario de Miedos Escolares, Catálogo de Situaciones Escolares, Escala Visual Análoga para la Ansiedad-Revisada, Escala Magallanes de Problemas de Ansiedad e Inventario de Ansiedad Escolar. En segundo lugar se analiza la fiabilidad (consistencia interna y estabilidad temporal) y la validez (estructura factorial, relación con otros cuestionarios, relación con otros procedimientos de evaluación y diferenciación entre grupos) de la puntuación de estos instrumentos, con el fin de conocer sus propiedades psicométricas y poder tomar decisiones sobre su uso en la práctica clínica o educativa sobre la base de criterios empíricos. Los resultados permiten concluir que actualmente existen autoinformes que presentan garantías psicométricas satisfactorias para llevar a cabo una interpretación fiable y válida de sus puntuaciones, siendo por tanto útiles en la práctica clínica y educativa.
Resumo:
Camera traps have become a widely used technique for conducting biological inventories, generating a large number of database records of great interest. The main aim of this paper is to describe a new free and open source software (FOSS), developed to facilitate the management of camera-trapped data which originated from a protected Mediterranean area (SE Spain). In the last decade, some other useful alternatives have been proposed, but ours focuses especially on a collaborative undertaking and on the importance of spatial information underpinning common camera trap studies. This FOSS application, namely, “Camera Trap Manager” (CTM), has been designed to expedite the processing of pictures on the .NET platform. CTM has a very intuitive user interface, automatic extraction of some image metadata (date, time, moon phase, location, temperature, atmospheric pressure, among others), analytical (Geographical Information Systems, statistics, charts, among others), and reporting capabilities (ESRI Shapefiles, Microsoft Excel Spreadsheets, PDF reports, among others). Using this application, we have achieved a very simple management, fast analysis, and a significant reduction of costs. While we were able to classify an average of 55 pictures per hour manually, CTM has made it possible to process over 1000 photographs per hour, consequently retrieving a greater amount of data.
Resumo:
Dissertação apresentada à Escola Superior de Tecnologia do Instituto Politécnico de Castelo Branco para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Desenvolvimento de Software e Sistemas Interactivos, realizada sob a orientação científica da categoria profissional do orientador Doutor Eurico Ribeiro Lopes, do Instituto Politécnico de Castelo Branco.
Resumo:
This volume was begun by Thomas Danforth, most likely around 1687, and contains transcriptions of donation records, property inventories, College laws, Overseers and Corporation minutes, and other official documents dating from 1636 onwards. By copying these documents into one volume, Danforth brought together a chronicle of Harvard's early history. Some of its content duplicates that of College Book 1, and other entries were copied from sources which no longer exist, including College Book 2, which was destroyed by fire in 1764. Danforth, who served as College Treasurer from 1650 to 1668, as Steward from 1668 to 1682, and again as Treasurer from 1682 to 1683, is believed to have created this volume as a precautionary measure during the great upheaval surrounding the 1684 annulment of the Royal Charter of the Massachusetts Colony and consequent dissolution of the Harvard Corporation. Some scholars believe he created College Book 3 in fear that the College's original records, from which it was largely derived and copied, might be destroyed.
Resumo:
College Book 6 is often referred to as the Hollis book, reflecting its contents. It was created following an April 4, 1726 Corporation vote that "Mr. Treasurer procure a Book, into which shall be transmitted, and a Register kept of, Mr Hollis's Rules, orders, Gifts & Bounties past & to come; together with ye Names & age, & Charecter of his Scholars, ye time of their Entry and Dismission; and also all ye Votes of ye Overseers & Corporation from time to time relating to ye said orders, Bounties & Scholars of the said Mr Hollis." Entries are primarily in Benjamin Wadsworth's hand and record donations from Thomas Hollis and his descendants, with transcriptions of related Corporation minutes. They also provide detailed information about the allocation of Hollis funds and scholarships, and the rules governing the Hollis Professorship of Divinity (established in 1721) and the Hollis Professorship of Mathematics and Natural Philosophy (established in 1727). The volume also contains inventories of books in the official library of the Hollis Professor of Divinity and two inventories – created in 1779 and in 1790 – of the mathematical and philosophical apparatus purchased with Hollis funds. Many entries related to the purchase of scientific instruments and supplies include the cost in sterling of each item. Also included are entries related to financial accounts and expenditures, as well as copies of letters from Nathaniel Hollis.
Resumo:
One-page inventory of the silver, including the weight of each object, donor, and dates; one passage is crossed out, and written diagonal to the inventory are the words "Fort London Farmer London." Docketed on the verso with an address to the Right Honorable Samuel Bishop of York.
Resumo:
Report of a committee appointed by the College to inventory the College Plate, listing faculty members and the pieces in their possession. The folder also includes two receipts signed by Harvard tutors Charles Stearns (Harvard AB 1773) and William Bentley (Harvard AB 1777, AM 1780), acknowledging the vessels they were loaned.
Resumo:
Black and white composition book sent to the Harvard College Library containing a typed "copy of notes made in the spring of 1886" by John H. Buck. Includes historical information, and physical descriptions and valuations of the Great Salt, the Stoughton Cup, the Browne Cup, and the christening basin acquired with the donation of Oliver Wendell, as well as notes on other gifts of silver.
Resumo:
Contains instructions for preparing and administering medicine for adults and children, and generalized uses for certain ingredients, written by Dr. Francis Kittredge. Preparations include ointment for scurvy, bone ointment, nerve ointments, procedures to soothe a sore mouth and to stop excessive bleeding, and treatment to kill worms. The materials used to prepare bone ointment include fresh butter, hog fat, chamomile, garlic, and night shade, among other ingredients. The recipe for “simple nerve ointment” instructs the preparer to simmer half a pint of neet foot oil, a pint of rum, and one jell of oil of turpentine over a “gentle fire.” Kittredge writes that oil of St. John’s Wort is effective in treating swelling of the legs, for cold and aches, and for burning and scalds, while oil of Elderflower is indicated for belly aches. The manuscript is housed in a binding created by the Harvard Medical School library. Tipped into the binding is one letter from Frederick O. West, M.D., Harvard Medical School, Boston, Massachusetts, that accompanied his donation of the Kittredge receipt book to the library in 1919. There is also one letter of unknown provenance enclosed with the receipt book, which contains an inventory of the estate of Antipas Brigham, of Grafton, Massachusetts, signed by Worcester County Judge Joseph Wilder on 7 November 1749. It is unclear if this letter has any connection to Frederick O. West or Francis Kittredge.
Validation of the Swiss methane emission inventory by atmospheric observations and inverse modelling
Resumo:
Atmospheric inverse modelling has the potential to provide observation-based estimates of greenhouse gas emissions at the country scale, thereby allowing for an independent validation of national emission inventories. Here, we present a regional-scale inverse modelling study to quantify the emissions of methane (CH₄) from Switzerland, making use of the newly established CarboCount-CH measurement network and a high-resolution Lagrangian transport model. In our reference inversion, prior emissions were taken from the "bottom-up" Swiss Greenhouse Gas Inventory (SGHGI) as published by the Swiss Federal Office for the Environment in 2014 for the year 2012. Overall we estimate national CH₄ emissions to be 196 ± 18 Gg yr⁻¹ for the year 2013 (1σ uncertainty). This result is in close agreement with the recently revised SGHGI estimate of 206 ± 33 Gg yr⁻¹ as reported in 2015 for the year 2012. Results from sensitivity inversions using alternative prior emissions, uncertainty covariance settings, large-scale background mole fractions, two different inverse algorithms (Bayesian and extended Kalman filter), and two different transport models confirm the robustness and independent character of our estimate. According to the latest SGHGI estimate the main CH₄ source categories in Switzerland are agriculture (78 %), waste handling (15 %) and natural gas distribution and combustion (6 %). The spatial distribution and seasonal variability of our posterior emissions suggest an overestimation of agricultural CH₄ emissions by 10 to 20 % in the most recent SGHGI, which is likely due to an overestimation of emissions from manure handling. Urban areas do not appear as emission hotspots in our posterior results, suggesting that leakages from natural gas distribution are only a minor source of CH₄ in Switzerland. This is consistent with rather low emissions of 8.4 Gg yr⁻¹ reported by the SGHGI but inconsistent with the much higher value of 32 Gg yr⁻¹ implied by the EDGARv4.2 inventory for this sector. Increased CH₄ emissions (up to 30 % compared to the prior) were deduced for the north-eastern parts of Switzerland. This feature was common to most sensitivity inversions, which is a strong indicator that it is a real feature and not an artefact of the transport model and the inversion system. However, it was not possible to assign an unambiguous source process to the region. The observations of the CarboCount-CH network provided invaluable and independent information for the validation of the national bottom-up inventory. Similar systems need to be sustained to provide independent monitoring of future climate agreements.
Resumo:
Surface sediment samples representative for the tropical and subtropical South Atlantic (15°N to 40°S) were investigated by isothermal magnetic methods to delineate magnetic mineral distribution patterns and to identify their predominant Holocene climatic and oceanographic controls. Individual parameters reveal distinct, yet frequently overlapping, regional sedimentation characteristics. A probabilistic ('fuzzy c-means') cluster analysis was applied to five concentration independent magnetic properties assessing magnetite to hematite ratios and diagnostic of bulk and fine-particle magnetite grain size and coercivity spectra. The resultant 10 cluster structures establish an oceanwide magnetic sediment classification scheme tracing the major terrigenous eolian and fluvial fluxes, authigenic biogenic magnetite accumulation in high-productivity areas, transport by ocean current systems, and effects of bottom water velocity on depositional regimes. Distinct dissimilarities in magnetic mineral inventories between the eastern and western basins of the South Atlantic reflect prominent contrasts of both oceanic and continental influences.