970 resultados para IUCN Red List
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This thesis presents research into the space use of a specialist reedbed Passerine, the Bearded Reedling, or Bearded Tit, Panurus biarmicus, with a view to inform the conservation of this species and reedbeds as a whole. How a species uses space, and how space use changes between individuals or over time, can influence: the ability to forage and hunt effectively, breeding success, susceptibility to predation, genetic health, disease spread, robustness against environmental change and ultimately, colonisation or extinction. Thus, understanding the space use of animals can provide critical insight into ecological systems. Birds offer interesting models when studying animal space use, as, by being intrinsically mobile, many bird species can occupy multiple spatial scales. As a consequence of being completely dependent on patchy and ephemeral reedbed habitats, the Bearded Reedling, has a clustered, inhomogeneous distribution throughout its range. This drives the existence of distinct spatial scales upon which space use studies should be characterised. Distribution and movement within a single reedbed can be considered local-scale, while spatial processes between reedbeds can be considered wide-scale. Temporal processes may act upon both of these scales. For example, changing interactions with predators may influence nest positioning at a local-scale, while seasonal changes in resource requirements might drive processes such as migration at a wide-scale. The Bearded Reedling has a wide temperate breeding range, extending over much of Eurasia. On the IUCN’s red list, it is listed as ‘of least concern’, with an estimated European population between 240,000-480,000 breeding pairs. Despite its relatively favourable conservation status, its dependence on reedbed habitats drives a fragmented distribution, with populations being concentrated in small, isolated, stands. Over the last century reedbed wetlands have suffered rapid declines caused by drainage schemes undertaken to improve land for development or agriculture. Additionally, many remaining reed stands are subject to extensive commercial management to produce thatch or biofuel. Conversely, in other areas, management is driven by conservation motives which recognise the present threats to reedbeds, and aim to encourage the diversity of species associated with these habitats. As the Bearded Reedling is fundamentally linked to the quality and structure of a reed stand, understanding the space use of this species will offer information for the direct conservation of this specialist species, and for the effects of reedbed management as a whole. This thesis first presents studies of space use at a local-scale. All local-scale research is conducted at the Tay Reedbeds in eastern Scotland. Mist netting and bird ringing data are used within capture recapture models, which include an explicit spatial component, to gain insight into the abundance of the Bearded Reedling on the Tay. This abundance estimation approach suggests the Tay reedbeds are a stronghold for this species on the British Isles, and that, as a high latitude site, the Tay may have importance for range expansion. A combination of transect surveys and radio-tracking data are then used to establish the local-scale space use of this species during the breeding and autumnal seasons. These data are related to changes in the structure of reed caused by local management in the form of mosaic winter reed cutting. Results suggest that birds exploit young and cut patches of reed as foraging resources when they are available, and that old, unmanaged reed is critical for nesting and winter foraging. Further local-scale studies concern the spatial patterns in the nesting habits of this species. Mosaic reed cutting creates clear edges in a reedbed. Artificial nests placed in the Tay Reedbeds demonstrate increased nest predation rates closer to the edges of cut patches. Additionally, high predation rates become reduced as the cut reed re-grows, suggesting that reed cutting may increase accessibility of the stand to predators. As Bearded Reedling nests are uncommon and difficult to locate, the timing, site selection and structure of a sample of real nests from the Tay is then detailed. These demonstrate an early, and relatively rigid breeding onset in this species, the importance of dense, compacted reeds as nesting sites and a degree of flexibility in nest structure. Conservation efforts will also benefit from studies into wide-scale spatial processes. These may be important when establishing how colonisation events occur and when predicting the effects of climatic change. The Bearded Reedling has been traditionally considered a resident species which only occasionally undertakes wide-scale, between-reedbed, movements. Indeed, the ecology of this species suggests strict year round local residency to reedbeds, with distinct seasonal changes in diet allowing occupation of these habitats year round. The European ringing recoveries of this species, since the 1970s are investigated to better characterise the wider movements of specialist resident. These suggest residency in southern populations, but higher instances of movement than expected in more northerly regions. In these regions wide-scale movement patterns resemble those of partial regular migratory species. An understanding of local and wide-scale spatial processes can offer a strong foundation on which to build conservation strategies. This thesis aims to use studies of space use to provide this foundation for the Bearded Reedling and offer further insight into the ecology of reedbed habitats as a whole. The thesis concludes by proposing an effective strategy for the conservation management of reedbeds that will especially benefit the Bearded Reedling.
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This report provides a systematic review of the most economically damaging endemic diseases and conditions for the Australian red meat industry (cattle, sheep and goats). A number of diseases for cattle, sheep and goats have been identified and were prioritised according to their prevalence, distribution, risk factors and mitigation. The economic cost of each disease as a result of production losses, preventive costs and treatment costs is estimated at the herd and flock level, then extrapolated to a national basis using herd/flock demographics from the 2010-11 Agricultural Census by the Australian Bureau of Statistics. Information shortfalls and recommendations for further research are also specified. A total of 17 cattle, 23 sheep and nine goat diseases were prioritised based on feedback received from producer, government and industry surveys, followed by discussions between the consultants and MLA. Assumptions of disease distribution, in-herd/flock prevalence, impacts on mortality/production and costs for prevention and treatment were obtained from the literature where available. Where these data were not available, the consultants used their own expertise to estimate the relevant measures for each disease. Levels of confidence in the assumptions for each disease were estimated, and gaps in knowledge identified. The assumptions were analysed using a specialised Excel model that estimated the per animal, herd/flock and national costs of each important disease. The report was peer reviewed and workshopped by the consultants and experts selected by MLA before being finalised. Consequently, this report is an important resource that will guide and prioritise future research, development and extension activities by a variety of stakeholders in the red meat industry. This report completes Phase I and Phase II of an overall four-Phase project initiative by MLA, with identified data gaps in this report potentially being addressed within the later phases. Modelling the economic costs using a consistent approach for each disease ensures that the derived estimates are transparent and can be refined if improved data on prevalence becomes available. This means that the report will be an enduring resource for developing policies and strategies for the management of endemic diseases within the Australian red meat industry.
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Qualitative estimation of phytoplankton and zooplankton of the northern Red Sea and Gulf of Aqaba were carried out from four sites: Sharm El-Sheikh, Taba, Hurghada and Safaga. A total of 106 species and varieties of phytoplankton were identified including 41 diatoms, 53 dinoflagellates, 10 cyanophytes and 2 chlorophytes. The highest number of species was recorded at Sharm El-Sheikh (46 spp), followed by Safaga (40 spp), Taba (30 spp), and Hurghada (23 spp). About 95 of the recorded species were previously mentioned by different authors in the Red Sea and Gulf of Suez. Eleven species are considered new to the Red Sea. About 115 species of zooplankton were recorded from the different sites. They were dominated by four main phyla namely: Arthropoda, Protozoa, Mollusca, and Urochordata. Sharm El-Sheikh contributed the highest number of species (91) followed by Safaga (47) and Taba (34). Hurghada contributed the least (26). Copepoda dominated the other groups at the four sites. The appearances of Spirulina platensis, Pediastrum simplex, and Oscillatoria spp. of phytoplankton in addition to the rotifer species and the protozoan Difflugia oblongata of zooplankton impart a characteristic feature of inland freshwater discharge due to wastewater dumping at sea in these regions resulting from the expansion of cities and hotels along the coast.
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U.S. Air Force Project Rand.
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Mode of access: Internet.
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A survey of red and grey squirrel habitat associations in Northern Ireland was conducted between September 1994 and August 1995. Two hundred and sixty-one sites were visited and a list of habitat characteristics for each site was noted. Multiple discriminant function analysis of the habitat type was employed to group squirrel occurrence, while contingency analysis examined independence of habitat type and squirrel species presence. Habitat associations differed between the two species. One-way ANOVAs of habitat data suggested that sites occupied by red squirrels only were predominantly coniferous, at higher altitude and latitude and much larger in area than sites occupied by grey squirrels only, which were mostly deciduous. When both species were sympatric, sites were more likely to be coniferous and larger in area than sites occupied by either species. Grey squirrels were less frequent than expected in upland plantations and more frequent than expected in parkland and gardens; the opposite was true for red squirrels. The mean distance between sites with only red squirrels and the nearest site with grey squirrels was greater than the mean distance between sites with only grey squirrels and the nearest site with red squirrels. An approach to conserving the red squirrel in view of the continued expansion in the grey squirrel's distribution in Ireland is discussed.
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La Explotación Comercial sexual de los niños, niñas y adolescentes – ESCNNA ha ocasionado graves repercusiones en la sociedad, sometiendo a los menores a situaciones que atentan contra su integridad física y psicológica. Por ello, en el marco internacional y nacional se han adelantado diferentes iniciativas para erradicar dicho fenómeno. La Cooperación Internacional para el desarrollo- CI ha sido una valiosa herramienta en el tratamiento del flagelo dados los diferentes canales de ayuda los cuales han contribuido para su intervención. En este sentido, la CI por medio de la Agencia Canadiense para el desarrollo internacional- ACDI y la Fundación Renacer- ECPAT Internacional (End Child Prostitution, Pornography & Trafficking of Children for Sexual Purposes) hicieron posible junto con otros actores el proyecto de CI en Cartagena llamado: “La Muralla soy yo”, el cual buscó la prevención y futura erradicación de la Explotación Sexual de niños y adolescentes en el turismo- ESNAT en la ciudad. En el presente estudio de caso se pretende identificar cómo la CI incide por medio de la ACDI y la red ECPAT Internacional en instituciones locales de Cartagena para la prevención y posible erradicación del problema de la Explotación comercial sexual infantil en niños, niñas y adolescentes, en el contexto del turismo.
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Pós-graduação em Ciências Biológicas (Zoologia) - IBB
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[ES] En Gran Canaria, el uso de aguas regeneradas para el riego es una práctica utilizada desde hace más de treinta años, representando actualmente un 8% de los recursos hídricos utilizados (Consejo Insular de Aguas de Gran Canaria, com.per.). Recientemente y como respuesta al uso de aguas regeneradas, existe un creciente interés por la presencia de los denominados contaminantes emergentes en las aguas subterráneas y superficiales. Algunos son altamente móviles con potencial de lixiviación a las aguas subterráneas, mientras que otros se pueden acumular en la capa superior del suelo gracias a su capacidad adsorbente o son biodegradados en este medio. Los contenidos de algunas de estas sustancias en el agua son objeto de control atendiendo al listado de sustancias prioritarias de la Directiva 2008/105/CE. El objetivo de este estudio es analizar la situación en la zona del campo de golf de Bandama (NE de Gran Canaria), que ha sido regado con aguas regeneradas desde 1976, donde se ha establecido una red de control de agua de riego y agua subterránea, a partir de la que se están analizando sistemáticamente 185 compuestos emergentes y prioritarios.
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We have discovered using Pan-STARRS1 an extremely red late-L dwarf, which has (J - K)(MKO) = 2.78 and (J - K) (2MASS) = 2.84, making it the reddest known field dwarf and second only to 2MASS J1207-39b among substellar companions. Near-IR spectroscopy shows a spectral type of L7 +/- 1 and reveals a triangular H-band continuum and weak alkali (K I and Na I) lines, hallmarks of low surface gravity. Near-IR astrometry from the Hawaii Infrared Parallax Program gives a distance of 24.6 +/- 1.4 pc and indicates a much fainter J-band absolute magnitude than field L dwarfs. The position and kinematics of PSO J318.5-22 point to membership in the beta Pic moving group. Evolutionary models give a temperature of 1160(-40)(+30) K and a mass of 6.5(-1.0)(+1.3) M-Jup, making PSO J318.5-22 one of the lowest mass free-floating objects in the solar neighborhood. This object adds to the growing list of low-gravity field L dwarfs and is the first to be strongly deficient in methane relative to its estimated temperature. Comparing their spectra suggests that young L dwarfs with similar ages and temperatures can have different spectral signatures of youth. For the two objects with well constrained ages (PSO J318.5-22 and 2MASS J0355+11), we find their temperatures are approximate to 400 K cooler than field objects of similar spectral type but their luminosities are similar, i.e., these young L dwarfs are very red and unusually cool but not "underluminous." Altogether, PSO J318.5-22 is the first free-floating object with the colors, magnitudes, spectrum, luminosity, and mass that overlap the young dusty planets around HR 8799 and 2MASS J1207-39
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46 hydropolyp species of 28 genera and 10 families were sampled during the "Meteor" passage 1964/65 (IIOE) through the Red Sea and its northern and southern exits and on the occasion of several ecological investigations of 29 selected coral reef sections of the central Red Sea and the Gulf of Aqaba. These collections comprise 128 single records of hydropolyp species. Three species and two genera each with one species are doubtful. 25 species, seven genera, one family and one subfamily, together from 49 records have not previously been found in the Red Sea and its exits. Including these newly reported species, the total list increases from 64 species and 112 records to 89 species and 240 single records and 51 additional ones. Scanning microscopical photos, made for the first time for the illustration of the hydropolyps, have been shown to be suitable for a better characterization and diagnosis of the species. Qualified results on the reasons for the horizontal distribution of the species known from the Red Sea area cannot be given because of the low number of samples sporadically distributed through the whole area. In contrast with this fact, the vertical spread of the species sampled seems primarily to be regulated by water exchange and light intensity. For example, four species of hydropolyps are excellent indicators of certain abiotic factors or combinations of them: Gymnangium eximium reacts extremely stenophote-photophobe-rheophil, Eudendrium ramosum moderately stenophote-photophobe-rheophobe, Lytocarpus philippinus moderately stenophote-photophil-rheophil, and Halocordyle disticha var. australis extremely stenophote-photophil but moderately rheophil. Other species have been found throughout all the light zones. Combined with the small size of their colonies their euryphotic behaviour does not allow their use as indicator species.
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La Arquitectura de la Red de las Cosas (IoT) hace referencia a una red de objetos cotidianos interconectados digitalmente. Gracias a IoT, no sólo podemos almacenar, analizar e intercambiar información y datos con dichos objetos, sino que además ellos pueden tener la capacidad de interactuar entre ellos de forma autónoma. Para ellos, los objetos cotidianos disponen de actuadores y sensores que permiten modificar su comportamiento y conocer su estado y propiedades, respectivamente. La gestión de IoT combina todas las funcionalidades necesarias para coordinar un sistema con una Arquitectura de la Red de las Cosas. Una buena gestión del sistema puede reducir costes, mejorar la asistencia a problemas de uso inesperado, corregir fallos y permitir la escalabilidad del sistema permitiéndole la incorporación de nuevos módulos y funcionalidades. En este Proyecto Fin de Grado se realizará primero un análisis de los aspectos de IoT relacionados con la gestión de dispositivos integrados en la Arquitectura de la Red de las Cosas. Después se procederá a realizar la especificación y el diseño de plataforma de gestión. Y finalmente se desarrollarán un caso de uso que permita validar algunos elementos de la plataforma diseñada. Se realizarán distintas pruebas para comprobar una correcta gestión de los dispositivos como el correcto funcionamiento del diseño previamente establecido, por medio, entre otras, de las siguientes operaciones: listar los elementos conectados, posibilidad de obtener y/o modificar dichos elementos (su configuración y su estado) o presentar informes y comprobar el estado en el que se encuentran los dispositivos: operativos o no operativos. De tal forma, en esta memoria se plasma como se ha desarrollado la gestión de dispositivos integrados en un sistema con Arquitectura de la Red de las Cosas utilizando tanto plataformas Intel Galileo como Arduino. ABSTRACT. The Architecture of the Internet of Things (IoT) refers to a network of digitally interconnected everyday objects. With IoT, not only we can store, analyze and exchange information and data with objects, but they can also autonomously interact among them. To accomplish that, the everyday objects are made of actuators and sensors that let us act on their behavior and know their state and properties, respectively. Management of IoT combines all the functionalities needed for coordinating a system with an Architecture of the Internet of Things. A good management system can reduce faults, improve assistance to reduce unexpected problems, correct errors and allow the scalability of the system, allowing the addition of new modules and functionalities. In this Degree Final Project, an analysis about aspects of IoT related to the management of devices integrated into the Architecture of the Internet of things is carried out first. Then, the specification and the design of the management platform is made. Finally, a use case will be developed to validate some elements of the designed platform. Several tests will be run to check the correct management of the devices such as the proper functioning of the design previously established, requesting, among others, the following set of operations: list the connected elements, possibility to obtain or modify these elements (their configuration and their state) or reporting and checking which devices are operating or non-operating. So, in this memory it is explained how it has been carried out the management of devices integrated in a system with an Architecture of the Internet of Things (IoT), based on the Intel Galileo and Arduino platforms.
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This four-page undated list contains book titles primarily arranged into classes. The last page is titled, "Books for the red stamp."
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Shipping list no.: 91-580-P.