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DIALNET OAI Articles (803.276 recursos)

Dialnet (Difusión de Alertas en la Red) es una plataforma de recursos y servicios documentales, cuyo objetivo fundamental se centra en mejorar la visibilidad y el acceso a la literatura científica hispana a través de Internet.

Geociencias. Medio ambiente

Mostrando recursos 1 - 20 de 16.210

  1. Vera, J. Fernando (coord.); López Palomeque, Francisco; Marchena, Manuel J. y Antón, Salvador (2011) Análisis territorial del turismo y planificación de destinos turísticos. Valencia: Tirant Lo Blanc. Colección Crónica, 473 p. ISBN: 978-84-9004-228-1

    Prat Forga, José María

  2. Soja, Edward W. (2010) Seeking Spatial Justice. Minneapolis: University of Minnesota Press, 256 p. ISBN: 978-0-8166-6667-6 (tapa dura), ISBN: 978-0-8166-6668-3 (butxaca)

    Lonetto, Aurora

  3. Serres, Michel (2011) Habiter. París: Éditions Le Pommier, 192 p. ISBN: 978-2-7465-0569-8

    Reymaeker, Brice de

  4. Ross, Andrew (2011) Bird on Fire: Lessons from the world’s least sustainable city Nova York: Oxford University Press, XI + 297 p. ISBN: 978-0-19-982826-5

    Saurí Pujol, David

  5. Puleo, Alicia H. (2011) Ecofeminismo para otro mundo posible. Madrid: Cátedra, 439 p. ISBN: 978-84-376-2729-8

    Agüera Cabo, Mercè

  6. Minois, Georges (2011) Le poids du nombre: L’obsession du surpeuplement dans l’histoire París: Editions Perrin, 677 p. ISBN: 978-2-262-03224-1

    Pavón Gamero, David

  7. Hayes, Graeme y Karamichas, John (eds.) (2011) Olympic Games, Mega-Events and Civil Societies: Globalization, Environment, Resistance Houndmills: Palgrave Macmillan, 292 p. ISBN: 978-0-230-24417-7

    Castro Coma, Mauro

  8. Jané, Òscar i Solé, Queralt (eds.) (2011) Observar les fronteres, veure el món. València: Afers, 350 p. ISBN: 978-84-92542-50-5

    Moncusí Ferré, Albert

  9. Cohen, Arón y Berriane, Mohamed (dir.) (2011) De Marruecos a Andalucía: migración y espacio social. Granada: Editorial Universidad de Granada, 428 p. ISBN: 978-84-338-5313-4

    Serra Salamé, Carles

  10. Balance de nitrógeno en una finca productora de leche caprina en el cantón de Barva, Costa Rica

    Jiménez, José P.; Levan, Olger; Camacho, María I.
    The objective of this study was to quantify the use of N in a goat milk producer farm located in the province of Heredia. Data such as feed purchases, milk sales, pur­chase and removal of animals was compiled and analyzed between January and December 2012. In order to evaluate the use of N, three indicators that allowed analyzing farm efficiency were used. Total number of animals was 102. Annual milk production was 22.417,5 kg. The farm imported 729,8 kg of nitrogen, of which 71% came from feed and only 29% from fertilizers. Farm exported 113,3 kg of nitrogen, of which...

  11. Interpretación del contenido de mercurio en muestras nacionales de pez vela (Istiophorus platypterus) y marlin (Makaira spp. o Tetrapturus spp.) a partir de parámetros toxicológicos internacionales

    Calleja, Carlos E.; Ramírez, Enrique
    Total mercury results in eleven samples of sail fish and eleven samples of marlin from national market places (where they are called with those names), from a study by the Costarican Fishing Federation, are presented. Sail fish samples vary between 0,85 and 1,30 mg of mercury/kg of fish, with an average of (1,07±0,17) mg of mercury/kg of fish, and marlin samples varied between 0,41 and 1,18 mg of mercury/kg of fish with an average of (0,83±0,27) mg of mercury/kg of fish. Both cases showed mercury concentrations close to the maximum recommended value of the World Health Organization (WHO) of 1...

  12. Desafíos nacionales en materia de métricas de cara a la meta costarricense de alcanzar la carbono-neutralidad en el 2021

    Fonseca, William; Herrera, Jorge; Allice, Federico
    This paper analyzes weaknesses faced by the carbon neutrality initiative proposed by the Costa Rican government due to metrics and highlights some of the technical improvements that will be required in order to achieve greater comparability, applicability and confidence from the results obtained. Technical gaps are found not only in the assessment of greenhouse gas emissions but when accounting for biogenic carbon capture and storage, where global reference values, usually those reported by the IPCC, are commonly used. We then make reference to problems associated with their use, mainly related to the uncertainty (accuracy and precision) that results from any...

  13. Carbono almacenado en plantaciones forestales de Pinus caribaea, Cupressus lusitanica y Eucalyptus deglupta en el Proyecto Hidroeléctrico Cachí

    Rojas, Marilyn
    Forest plantations are considered the main carbon sinks thought to reduce the impact of climate change. Regarding many species, however, there is a lack of information in order to establish metrics on accumulation of biomass and carbon, principally due to the level of difficulty and the cost of quantification through direct measurement and destructive sampling. In this research, it was evaluated carbon stocks of forest plantations near the dam of hydroelectric project Cachí, which belongs to Instituto Costarricense de Electricidad. 25 unit samples were evaluated along some plantations that contain three different species. 30 Pinus caribacea trees, 14 Cupressus lusitanica...

  14. Experiencias y expectativas de la Compañía Nacional de Fuerza y Luz en materia de pago por servicios ambientales

    Montero, Marco
    The monetary recognition from different kinds of environmental services on behalf of their providers is a mechanism to assure their continuity over time. In Costa Rica there is a great experience on how to pay for environmental services, being CNFL one of the institutions that had developed these mechanisms for many years. The traditional schemes of payment for environmental services (PES) have evolved into more striking systems of recognition; nowadays environmental services provided by agro-ecosystems are also recognized, whenever developed through environmentally sustainable practices, searching for ecologic improvement in the areas where implemented. Furthermore, the recognition of environmental services in different areas such as the...

  15. La gente y las semillas

    Picado Umaña, Wilson
    This article analyzes the processes of selection and dispersion of seeds and its importance in the development of the agriculture in history. It is a comparative analysis between the emergence of the Neolithic revolution and the development of the Green revolution. It is an interpretative study

  16. Evolución y desafíos del programa de pago por servicios ambientales implementado por la Empresa de Servicios Públicos de Heredia S.A.

    Solana, Vivian
    The experience of the ESPH S. A. in the implementation of payments for environmental services (PES) is notable for being a scheme completely independent from the institutionalism of the Fondo Nacional de Financiamiento Forestal (Fonafifo). ESPH S. A. has a financial mechanism that comes from an item known as water rate, which represents the environmental cost to protect five watersheds located in the urban periphery of Heredia’s central region. The enterprise´s experience demonstrates that in sites with similar conditions, the PES is a tool that contributes to forest protection; however, it must be accompanied by other initiatives to offset the urban pressure exerted on...

  17. Análisis de dos métodos para el levantamiento del componente arbóreo en una sección del sendero Siempre Verde en el Parque Nacional Santa Rosa

    Jiménez, José; Méndez, Ana; Quesada, Andrea; Carvajal, José Pablo
    En el sendero Siempre Verde se encontraron 54 individuos, 23 especies y 16 familias de árboles. La Anacardiaceae representa la familia con mayor diversidad de especies, tres en total. La más abundante es Moraceae, con 13 individuos que pertenecen a Castilla elástica. Además, al comparar dos metodologías para el levantamiento espacial de los árboles mayores de (>) 10 cm de diámetro, se concluye que el método de cinta métrica y brújula (derrotero) es el más preciso dentro de un área con cobertura natural.

  18. Pago por servicios ambientales en las cuencas Sarapiquí y Toro: implicaciones teóricas y técnicas de un análisis de factibilidad

    Fallas, Agustín
    This paper presents some theoretical and technical conclusions on the contribution of Forest Ecosystem Services to the reduction of deforestation rates in highly vulnerable areas of the Costa Rican Central Mountain Range and to the regulation of watersheds, and the resulting increased profitability of investments in hydro-electrical power plants. Particularly, the paper presents and applies a model to estimate different internal rates of return for investments in hydro-electrical power plants based on different percentages of Forest Ecosystem Services payment in the Sarapiquí and Toro watersheds where the Costa Rican public utility company Ice was building two hydro plants at the time of the study.

  19. Percepción y decisión económica de productores locales: el rol del pago por servicios ambientales para dos tipos de bosque en la región Huetarnorte, Costa Rica

    Meza, Víctor; Navarro Álvarez, Willy; Pokorny, Benno
    The financial behavior of three schemes for payments for environmental services (PES) adjusted to the forest value (FV) was assessed, starting from a first forest harvest, which were classified into two types according to the dominance of Pentaclethra macroloba combined with palms (Forest Pp) or combined with Carapa guianensis (Forest Pc). In these forests, common production functions of sustainable forest management (SFM), and functions of profitability were elaborated for two conditions of harvesting during a cutting cycle. The result ofthese forest values shows that any current scheme for sustainable forest management and/or payments for environmental services can’t compete when compared to land values paid...

  20. Una guía de diagnóstico rápido para determinar el potencial de pago por servicios ecosistémicos hídricos en microcuencas hidrográficas

    Huertas, German; Jiménez, Francisco
    The guide is based on four components of analysis: supply and demand conditions of water ecosystem services, governance and institutional framework; criteria and indicators are established and evaluated for each component. The fast diagnose defines the immediate actions needed to overcome the weaknesses of the components and to strengthen the conditions for the design and implementation of a scheme of payment for water ecosystem services. We present the results of the implementation and validation of the guide on the microwatershed of the Reventado River in Cartago, Costa Rica, according to which, in general, this microwatershed has favorable conditions for the design and implementation of a...

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