86,580 research outputs found
Multi-functional production systems: from research to practice
No full textMultifunctionality is the inherent characteristic of ecosystems to simultaneously perform multiple functions that provide ecosystem services (ES) and might be able to provide a particular ES bundle or bundles. ES within these bundles can interact with each other, potentially leading to synergies and trade-offs, depending on the demand for the ES from the different stakeholders involved. The choices and uses of ES by stakeholders is central to understanding trade-offs (Turkelboom et al. in press). However, there may be limits to the extent of realisation of the synergies due to constraints on the ability of the ecosystem to deliver each service to the desired level and/or management practices and/or the negative interactions between certain ES (Berry et al., 2016). The nature of these associations also may depend on the spatial and temporal scale being considered.
This paper will examine the impacts of a selection of conservation agriculture interventions on multiple ecosystem services to illustrate the nature of these interactions (both intentional and unintentional), particularly in the context of some of the trade-offs that could occur between provisioning and other ES categories. For example, while reduced tillage agriculture may contribute to the ES of food provisioning, water quality, water flow regulation, climate regulation, however, the impacts on biodiversity and cultural ES and on pest regulation are not always beneficial. Thus it will explore the importance of management in affecting outcomes through the realisation of synergies and minimisation of trade-offs. It will also consider how a more holistic assessment of the potential benefits and beneficiaries can demonstrate more fully the value of conservation interventions to human well-being.
Berry, P. et al. (2016) Ecosystem Services Bundles. In: Potschin, M. & K. Jax (eds): OpenNESS Ecosystem Services Reference Book
Turkelboom, F., et al. (in press) When we cannot have it all: Ecosystem services trade-offs in the context of spatial planning. Ecosystem Services. https://doi.org/10.1016/j.ecoser.2017.10.011peerReviewedunknown accessibilityei tietoa saavutettavuudest
Water-Saving Techniques Practiced by Olive Growers in Dry Areas
No full textDuring the last two decades, olive production in Syria has expanded to less favorable marginal dry areas, where water is the most important limiting factor. Farmers in these areas have been applying special management practices in order to improve the productivity of their trees. In this paper, we describe some methods used by olive growers in Syria to cope with water scarcity and improve water-use efficiency in their groves. During the winter rainfall season, some farmers construct rainwater-harvesting catchments to increase soil moisture content in the root zone. The application of calcareous soil or stones as mulch under the canopy is another common practice in orchards characterized by red heavy soils that crack in summer. Special attention is given to a “subsurface insert irrigation system”, which reduces surface evaporation during the hot summer months
Sustainable management of marginal drylands - the Khanasser Valley integrated research site in Syria, in Sustainable Management of Marginal Drylands (SUMAMAD)
No full textVariations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
John F. Kennedy telegram to Roosevelt
No full textJersey Homesteads (later the Borough of Roosevelt) was established in the 1930s as an agro-industrial cooperative community. It was established specifically for urban Jewish garment workers, many of whom had emigrated from Europe. President John F. Kennedy sent a telegram to the citizens of Roosevelt, New Jersey, apologizing for not being able to attend the memorial dedication in honor of former President Franklin Delano Roosevelt. (Jersey Homesteads became Roosevelt in 1945 in honor of the president.) President Kennedy expressed his gratitude to the people of Roosevelt for constructing the memorial, and commented that it will serve as a constant reminder of Roosevelt's good works
Logarithmic variance profiles and the corresponding f-1 spectra of temperature fluctuations in turbulent Rayleigh-Bénard convection
No full textWe report experimental results for the temperature variance 2(z) and the corresponding frequency spectra P(f) in turbulent Rayleigh-Bénard convection (RBC) in a cylindrical sample of aspect ratioT= D/L = 1:00 (D = 1:12 m is the diameter and L = 1:12 m the height). The measurements were conducted in the Rayleigh-number range 1011 < Ra < 1:35 1014 and Pr ' 0:8. For Ra = 1:35x1014, 2(z) could be described well by a logarithmic dependence on the vertical position z in a range of z 1 < z < z 2 with z 1 ' 70 and z 2 = 0:1L. Here L=(2Nu) is the thickness of a thin thermal sublayer adjacent to the horizontal plate where the heat flux (denoted by the Nusselt number Nu) is carried mostly by thermal diffusion. In the log layer, we found that the temperature spectra had a significant frequency range over which P(f) f with close to 1. As Ra decreased, increased so that the log layer became thinner. At Ra = 2:05 1011, z 2 < z 1 and therefore there was no range for a log layer. Correspondingly, the temperature spectrum near the horizontal plate did not have the f1 scaling form either
Maine author Franklin F. Gould recalls his first glimpse of the outside world
No full textMaine author Franklin F. Gould recalls his first glimpse of the outside world as he relates how, as a young farm boy in the late 1800\u27s, he drove his father\u27s horses on an errand to an icebound river
Mapping the Discipline of the Olympic Games An Author-Cocitation Analysis
No full textThe authors conducted an author cocitation analysis on prominent authors writing about the Olympics during the 1990s. Author cocitation is an established bibliometric technique that can be used to measure the relative similarities of topics written about by the cited authors. This enables a visual representation of the “intellectual space” of the discipline, in this case the Olympics, to be created for the period under review. So core and peripheral research areas are identified, along with their major contributors. The representation appears as a two-dimensional cluster-enhanced map. Subject expertise was then applied to the results to place labels on the generated clusters of authors and their topics
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