Search results for " Community"

Soil biogeochemistry and microbial community dynamics in Pinus pinaster Ait. forests subjected to increased fire frequency.

2022

Fire frequency might increase in many fire-dominated ecosystems of the world due to the combined effects of global warming, land-use change and increased human pressures. Understanding how changes in fire frequency can affect the main soil biogeochemical dynamics, as well as the microbial community, in the long term is utmost important. Here we determined the effect of changes in fire frequency and other fire history characteristics on soil C and N dynamics and the main microbial groups (using soil fatty acid profiles), in Pinus pinaster forests from central Spain. Stands were chosen to differ in the number of fires (1 to 3) occurred between 1976 and 2018, in the time elapsed since the last…

Previous fire occurrence, but not fire recurrence, modulates the effect of charcoal and ash on soil C and N dynamics in Pinus pinaster Aiton forests.

2021

Abstract Understanding the effects of fire history on soil processes is key to characterise their resistance and resilience under future fire events. Wildfires produce pyrogenic carbonaceous material (PCM) that is incorporated into the soil, playing a critical role in the global carbon (C) cycle, but its interactions with soil processes are poorly understood. We evaluated if the previous occurrence of wildfires modulates the dynamic of soil C and nitrogen (N) and microbial community by soil ester linked fatty acids, after a new simulated low-medium intensity fire. Soils with a different fire history (none, one, two or three fires) were heat-shocked and amended with charcoal and/or ash deriv…

Wastewater constituents impact biofilm microbial community in receiving streams

2022

Microbial life in natural biofilms is dominated by prokaryotes and microscopic eukaryotes living in dense association. In stream ecosystems, microbial biofilms influence primary production, elemental cycles, food web interactions as well as water quality. Understanding how biofilm communities respond to anthropogenic impacts, such as wastewater treatment plant (WWTP) effluent, is important given the key role of biofilms in stream ecosystem function. Here, we implemented 16S and 18S rRNA gene sequencing of stream biofilms upstream (US) and downstream (DS) of WWTP effluents in four Swiss streams to test how bacterial and eukaryotic communities respond to wastewater constituents. Stream biofil…

Estonian Community Houses as Local Tools for the Development of Estonian Cultural Policy

2013

Dificultades y límites en la ampliación de la comunidad moral

2009

These pages aim to answer the question, from the ethical theory, of whether it is necessary to extend the universe of moral beings in order to account for the responsibility we have for other beings and for nature in general. To this end, we review the various proposals calling for an extension to the moral community. Following the critical dialogue with these traditions, we argue that the moral community does not need to be extended, but that the concept of moral responsibility requires reconstruction

Nuevos datos sobre la sociedad y el derecho celtibéricos: la regulación de la cabaña ganadera

2012

Basándose en varios documentos medievales, mediante los cuales los reyes de la Corona de Aragón restablecieron un tribunal especial consuetudinario (tribunal del ligallo) para devolver a sus dueños el ganado mostrenco, el Autor determina el origen de este tribunal como antiquísima institución celtibérica y reconstruye su funcionamiento y papel en las sociedades célticas de la Península Ibérica. Esta corte de justicia, propia de todas las agrupaciones celtibéricas de siete miembros (oppida), se reunía dos veces por año, coincidiendo sus sesiones con las dos grandes festividades de Beltene (1 de mayo) y de Samain (1 de noviembre), y tenía como misión resolver todos los conflictos pecuarios su…

Le commerce équitable et la société civile internationale : une chance pour la mondialisation d'un droit de l'économie solidaire

2003

SUMMARY The international trade law passes through a crisis of legitimacy following the inequitable character of its rules and the irrelevance of its principles to the peculiarities of the North-South relations. Being the legal translation of the capitalist free market economic system, these rules are to protect the mercantile and free trade values. In order to overcome this crisis the movement of fair trade has emerged and has since its origin been supported by members of the international civil society. Fair trade means taking into account the standard of living and the conditions of employment of the marginalized producers in developing countries so as to improve them. This study is an a…

Direct Measurement of theWProduction Charge Asymmetry inpp¯Collisions ats=1.96  TeV

2009

We wish to thank R.S. Thorne and W.J. Stirling for useful discussions on the theoretical predictions.We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A.P. Sloan Foundation; the Bundesministerium fur Bildung und Forschung, Germany; the Korean Science…

A highly dynamic hot hydrothermal system in the subduction environment: Geochemistry and geochronology of jadeitite and associated rocks of the Sierr…

2021

A U-Pb zircon date of ~113 Ma revealed that a variety of jadeitites and related omphacitite, chloritite and albite-rich rocks from the subduction-related Sierra del Convento block-in-serpentinite-matrix mélange (eastern Cuba) formed nearly synchronously with MORB metabasite-derived anatectic trondhjemitic liquids at high-temperature and pressure in a hot subduction environment. Field, petrologic and geochemical data indicate hydrothermal/metasomatic processes triggered by juvenile fluids likely evolved from the crystallizing hydrous trondhjemitic melts. These fluids, variably mixed with sediment-derived fluids and channelized along fractures in the supra-slab mantle, precipitated relatively…

Estrategias para la enseñanza del lenguaje académico. Dominio desde la instrucción de las destrezas orales

2017

Resumen: La presencia cada vez más numerosa de estudiantes de movilidad procedentes de distintos países comunitarios y extracomunitarios en las aulas de nuestras universidades hace necesario habilitar un espacio curricular para ellos. No hay que olvidar que su presencia es parte de los objetivos marcados por el proyecto del Espacio Europeo de Enseñanza Superior (EEES); y una correcta integración de este tipo de alumnado respondería a las aspiraciones de internacionalización de la Universidad. La pretensión de esta propuesta es exponer el mecanismo de los cursos en los que a partir de la instrucción en las destrezas orales se establece la base para profundizar en el aprendizaje de la expresi…