9,932 research outputs found

    Citizen participation in the Plan for the Recovery of the Gomera Giant Lizard

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    [Resumo] Este programa forma parte do Proxecto Life denominado ‚ÄúPlano de Recuperaci√≥n do Lagarto Xigante da Gomera‚ÄĚ, cofinanciado pola Uni√≥n Europea, Ministerio de Medio Ambiente, Goberno de Canarias e Cabido Insular da Gomera.[Abstract] This programme forms a part of the Life Project entitled ‚ÄúPlan for the Recovery of the Gomera Giant Lizard‚ÄĚ which is co-financed by the European Union, the Ministry of the Environment and the Government of the Canary Islands and the Island Council of La Gomera

    Cultural realignment, islands and the influence of tourism: A new conceptual approach

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    This article introduces a new concept: ‚Äėcultural realignment‚Äô, which embraces phenomena such as cultural representation, interpretation, stereotyping and branding. Cultural realignment is the intentional depiction or interpretation of a culture (or part of one) for a specific preconceived purpose. It relates directly to power, and there is a need for this broad concept to help comprehend processes in an era of increasing globalisation, the growth of cultural commodification and the proliferation of representations in media including the internet. A prime concern of the article is the way that cultural realignment impacts on the identities of the communities subject to the realignment. The main examples given relate to island communities and their representation by anthropologists, and to island tourist destinations that have been subject to various descriptions, physical transformations and commodification driven by the tourism industry. A case study is examined as an example in the Canary Islands, using original research material related to recent and longitudinal fieldwork

    √Ėkologische Bewertung von B√§chen auf La Gomera und Teneriffa (Spanien) ‚Äď ein methodischer Ansatz zur Einsch√§tzung von Renaturierungsma√ünahmen bei der Umsetzung der EU-Wasserrahmenrichtlinie

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    In recent decades, the number of streams on the Canary Islands has decreased dramatically due to the non-sustainable consumption of water for agriculture and tourism. Natural reaches of streams with an endemic macroinvertebrate fauna do, however, still exist in protected areas of Tenerife and La Gomera. Those reaches serve as a reference to develop an assessment method for streams on islands. This method takes into account common parameters such as water quality and hydromorphology, while emphasizing biodiversity and endemism. The latter concepts as they relate to stream conservation are important in both nature conservation and protection of species as many endemic aquatic organisms are endangered.In den letzten Jahrzehnten ist die Zahl der Flie√ügew√§sser auf den Kanarischen Inseln drastisch zur√ľckgegangen. Ursache daf√ľr ist eine sehr hohe Wasserentnahme f√ľr Landwirtschaft und Tourismus, die das nachhaltig nutzbare Dargebot bei weitem √ľberschreitet. Dennoch existieren in besonders gesch√ľtzten Bereichen der Inseln Teneriffa und La Gomera noch naturnahe Abschnitte von Flie√ügew√§ssern mit Elementen endemischer Makroinvertebraten-Fauna. Diese Abschnitte dienen als Referenzgew√§sser f√ľr die Entwicklung eines spezifischen Bewertungssystems f√ľr Flie√ügew√§sser auf Inseln. Dieses System ber√ľcksichtigt die √ľblichen Qualit√§tsparameter wie Wasserg√ľte und Hydromorphologie, hebt aber die Biodiversit√§t und den inseltypischen Endemismus besonders hervor. Die daraus resultierenden Gew√§sserentwicklungskonzepte stellen ein entscheidendes Instrument des Natur- und Artenschutzes dar, da viele der endemischen Gew√§sserorganismen vom Aussterben bedroht sind

    On the Staphylinidae of La Gomera (Canary Islands), with descriptions of four new species (Coleoptera).

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    Bei Freilanduntersuchungen auf der Insel La Gomera wurden mehr als 45 Staphylinidenarten nachgewiesen, davon mindestens 31 Kanarenendemiten oder Inselendemiten von La Gomera. Vier Arten, allesamt sehr wahrscheinlich Inselendemiten, werden beschrieben und von nahverwandten Taxa unterschieden: Micropeplus gomerensis sp. n., Leptobium gomerense sp. n., Oligota stefaniae sp. n. und Alevonota sollemnis sp. n. Die Genitalien sowie weitere Differentialmerkmale werden abgebildet.StichwörterColeoptera, Staphylinidae, Micropeplus, Leptobium, Oligota, Alevonota, Palaearctic, Canary Islands, La Gomera, taxonomy, new species, endemism.Nomenklatorische Handlungensollemnis Assing, 1999 (Alevonota), spec. n.gomerense Assing, 1999 (Leptobium), spec. n.gomerensis Assing, 1999 (Micropeplus), spec. n.stefaniae Assing, 1999 (Oligota), spec. n.The results of a field trip to La Gomera are presented. More than 45 species of Staphylinidae were recorded, at least 31 of them either Canarian endemics or island endemics of La Gomera. Four species, all of them presumably island endemics, are described and distinguished from related taxa: Micropeplus gomerensis sp. n., Leptobium gomerense sp. n., Oligota stefaniae sp. n., and Alevonota sollemnis sp. n. Their sexual characters and further distinguishing characters are figured.KeywordsColeoptera, Staphylinidae, Micropeplus, Leptobium, Oligota, Alevonota, Palaearctic, Canary Islands, La Gomera, taxonomy, new species, endemism.Nomenclatural Actssollemnis Assing, 1999 (Alevonota), spec. n.gomerense Assing, 1999 (Leptobium), spec. n.gomerensis Assing, 1999 (Micropeplus), spec. n.stefaniae Assing, 1999 (Oligota), spec. n

    Power, culture and the production of heritage

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    Canary Islands geology

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    Un nuevo refugio para Simulium (Rubzovia) paraloutetense Crosskey, 1988 (Diptera: Simuliidae) en La Gomera (Islas Canarias)

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    Given the destruction of the only previously known locality of S. paraloutetense Crosskey 1988 on Gran Canaria, the discovery of a young larva in a spring brook on La Gomera is of special faunistic importance. The determination was difficult as there are no clear diagnostic characters for young larvae; plausible differentiation from the similar species was, however, possible. Bionomic information about the distribution and ecology of other simuliid species on La Gomera are given.Debido a la destrucci√≥n de la √ļnica localidad conocida anteriormente de S. paraloutetense Crosskey, 1988 en Gran Canaria, el descubrimiento de una larva joven en un arroyo primaveral de La Gomera reviste una especial importancia faun√≠stica. La determinaci√≥n fue dif√≠cil ya que no hay caracteres diagn√≥sticos claros para las larvas j√≥venes; sin embargo, fue posible una diferenciaci√≥n plausible de especies similares. Se proporciona informaci√≥n bion√≥mica sobre la distribuci√≥n y ecolog√≠a de otras especies de sim√ļlidos en La Gomera

    √Ācaros Fitoseidos de las islas Canarias (Acari, Phytoseiidae). II. Tenerife y La Gomera

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    Phytoseiid mites (Acari, Phytoseiidae) inhabiting plants in natural ecosystems from Tenerife and La Gomera islands (Canary Islands) have been studied. Surveys were conducted from 1997 to 2002. Eleven species were collected, one of them being reported for the first time from the Canary Islands and six of them reported for the first time from Tenerife and La Gomera islands. Euseius machadoi n. sp. collected from woody plants in the Canarian laurisilva is proposed as a new species.En muestreos realizados desde 1997 hasta 2002 se ha estudiado la fauna de √°caros fitoseidos (Acari, Phytoseiidae) asociada a plantas de ecosistemas naturales de las islas de Tenerife y La Gomera (Islas Canarias). Se han recolectado un total de 11 especies, siendo una de ellas citada por vez primera en las islas Canarias y seis de ellas citadas por primera vez en las islas de Tenerife y La Gomera. Euseius machadoi n. sp., recolectado en plantas le√Īosas de la laurisilva canaria, se propone como una nueva especie

    Improving the 14c dating of marine shells from the Canary Islands for constructing more reliable and accurate chronologies

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    Radiocarbon dating of closely associated marine mollusk shells and terrestrial material (charred wood or bone) collected from archaeological contexts on Tenerife and Fuerteventura islands allowed us to quantify the marine C-14 reservoir effect (Delta R) around the Canary Archipelago. Coastal Fuerteventura has a positive weighted mean Delta R value of +185 +/- 30 C-14 yr, while for Tenerife a range of negative and positive values was obtained, resulting in a Delta R weighted mean value of 0 +/- 35 C-14 yr. These values are in accordance with the hydrodynamic system present off the Canary Islands characterized by a coastal upwelling regime that affects the eastern islands (Fuerteventura and Lanzarote) but not the other islands of the archipelago, namely Tenerife. Because of this oceanographic pattern, we recommend the extrapolation of these results to the remaining islands of the archipelago, i.e. the first value must be used for the eastern islands, while for the central and western islands the acceptable Delta R value is 0 +/- 35 C-14 yr

    Evaluation of a Bayesian Algorithm to Detect Burned Areas in the Canary Islands’ Dry Woodlands and Forests Ecoregion Using MODIS Data

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    Burned Area (BA) is deemed as a primary variable to understand the Earth‚Äôs climate system. Satellite remote sensing data have allowed for the development of various burned area detection algorithms that have been globally applied to and assessed in diverse ecosystems, ranging from tropical to boreal. In this paper, we present a Bayesian algorithm (BY-MODIS) that detects burned areas in a time series of Moderate Resolution Imaging Spectroradiometer (MODIS) images from 2002 to 2012 of the Canary Islands‚Äô dry woodlands and forests ecoregion (Spain). Based on daily image products MODIS, MOD09GQ (250 m), and MOD11A1 (1 km), the surface spectral reflectance and the land surface temperature, respectively, 10 day composites were built using the maximum temperature criterion. Variables used in BY-MODIS were the Global Environment Monitoring Index (GEMI) and Burn Boreal Forest Index (BBFI), alongside the NIR spectral band, all of which refer to the previous year and the year the fire took place in. Reference polygons for the 14 fires exceeding 100 hectares and identified within the period under analysis were developed using both post-fire LANDSAT images and official information from the forest fires national database by the Ministry of Agriculture and Fisheries, Food and Environment of Spain (MAPAMA). The results obtained by BY-MODIS can be compared to those by official burned area products, MCD45A1 and MCD64A1. Despite that the best overall results correspond to MCD64A1, BY-MODIS proved to be an alternative for burned area mapping in the Canary Islands, a region with a great topographic complexity and diverse types of ecosystems. The total burned area detected by the BY-MODIS classifier was 64.9% of the MAPAMA reference data, and 78.6% according to data obtained from the LANDSAT images, with the lowest average commission error (11%) out of the three products and a correlation (R2) of 0.82. The Bayesian algorithm‚ÄĒoriginally developed to detect burned areas in North American boreal forests using AVHRR archival data Long-Term Data Record‚ÄĒcan be successfully applied to a lower latitude forest ecosystem totally different from the boreal ecosystem and using daily time series of satellite images from MODIS with a 250 m spatial resolution, as long as a set of training areas adequately characterising the dynamics of the forest canopy affected by the fire is defined
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