Cuantificación de las erosión en un talud de Taganana mediante fotogrametría terrestre (Tenerife)

This paper provides an assessment of the potential of terrestrial photogrammetry to calculate erosion associated with surface runoff on hillsides near roads during recent periods. To do this we choose a road embankment located in a valley with hills which have developed abundant grooves erosion. The accuracy of the surveying tool is evident in the evaluation of small hillsides, but is impractical for the study of large hillsides with significant slopes, in which are unknown initial parameters of the topography

Trade-offs between biomass use and soil cover. The case of rice-based cropping systems in the lake Alaotra region of Madagascar

Farmers in the Lake Alaotra region of Madagascar are currently evaluating a range of conservation agriculture (CA) cropping systems. Most of the expected agroecological functions of CA (weed control, erosion control and water retention) are related to the degree of soil cover. Under farmers’ conditions, the grain and biomass productivity of these systems is highly variable and the biomass is used for several purposes. In this study, we measured biomass production of cover crops and crops in farmers’ fields. Further, we derived relationships to predict the soil cover that can be generated for a particular quantity of mulch. We used these relationships to explore the variability of soil cover that can be generated in farmers’ fields, and to estimate howmuch of the biomass can be removed for use as livestock feed, while retaining sufficient soil cover. Three different kinds of cropping systems were investigated in 91 farmers’ fields. The first two cropping sequences were on the hillsides: (i) maize + pulse (Vigna unguiculata or Dolichos lablab) in year 1, followed by upland rice in year 2; (ii) the second crop sequence included several years of Stylosanthes guianensis followed by upland rice; (iii) the third crop sequence was in lowland paddy fields: Vicia villosa or D. lablab, which was followed by rice within the same year and repeated every year. The biomass available prior to rice sowing varied from 3.6 t ha-1 with S. guianensis to 7.3 t ha-1 with V. villosa. The relationship between the mulch quantity (M) and soil cover (C) was measured using digital imaging and was well described by the following equation: C = 1 - exp(-Am × M), where Am is an area-to-mass ratio with R2 > 0.99 in all cases. The calculated average soil cover varied from 56 to 97% for maize + V. unguiculata and V. villosa, respectively. In order to maintain 90% soil cover at rice sowing, the average amount of biomass of V. villosa that could be removed was at least 3 t ha-1 for three quarters of the fields. This quantity was less for other annual or biennial cropping systems. On average the V. villosa aboveground biomass contained 236 kg N ha-1. The study showed that for the conditions of farmers of Malagasy, the production and conservation of biomass is not always sufficient to fulfil all the above-cited agroecological functions of mulch. Inventory of the soil cover capacity for different types of mulch may help farmers to decide how much biomass they can remove from the fiel

Bay Area Smart Growth Scorecard

The Bay Area Smart Growth Scorecard is a landmark assessment of the planning policies of all 110 cities and counties of the San Francisco Bay Area.Although a city's current development is apparent to anyone who visits it, the policies that guide a city's future development are not so obvious. The Smart Growth Scorecard provides the first view into these policies and the first comparison among them.The Smart Growth Scorecard evaluated 101 cities in seven policy areas:preventing sprawl; making sure parks are nearby; creating homes people can afford; encouraging a mix of uses; encouraging density in the right places; requiring less land for parking; defining standards for good development. On average, Bay Area cities scored 34% (of a possible 100%), meaning cities are doing only a third of what they could be to achieve smart growth.The Smart Growth Scorecard evaluated eight counties (San Francisco is treated as a city) in five policy areas:managing growth; permanently protecting open space; preserving agricultural land; conserving natural resources; and offering transportation choices. On average, Bay Area counties scored 51%.The scores are low overall. But in every policy area, at least one city or county is doing well, whether it is a city that is encouraging walkable neighborhoods, or a county that is preserving its agricultural land. The Association of Bay Area Governments estimates that Bay Area will have one million additional residents by 2020; the Smart Growth Scorecard evaluates how well all the region's jurisdictions are planning for that growth, and how they can do better

Geo-environmental mapping using physiographic analysis: constraints on the evaluation of land instability and groundwater pollution hazards in the Metropolitan District of Campinas, Brazil

Geo-environmental terrain assessments and territorial zoning are useful tools for the formulation and implementation of environmental management instruments (including policy-making, planning, and enforcement of statutory regulations). They usually involve a set of procedures and techniques for delimitation, characterisation and classification of terrain units. However, terrain assessments and zoning exercises are often costly and time-consuming, particularly when encompassing large areas, which in many cases prevent local agencies in developing countries from properly benefiting from such assessments. In the present paper, a low-cost technique based on the analysis of texture of satellite imagery was used for delimitation of terrain units. The delimited units were further analysed in two test areas situated in Southeast Brazil to provide estimates of land instability and the vulnerability of groundwater to pollution hazards. The implementation incorporated procedures for inferring the influences and potential implications of tectonic fractures and other discontinuities on ground behaviour and local groundwater flow. Terrain attributes such as degree of fracturing, bedrock lithology and weathered materials were explored as indicators of ground properties. The paper also discusses constraints on- and limitations of- the approaches taken

Geography, Livelihoods and Rural Poverty in Honduras: An Empirical Analysis using an Asset-base Approach

The overall objective of this paper is to develop an appropriate conceptual and analytical framework to better understand how prospects for growth and poverty reduction can be stimulated in rural Honduras. We employ complementary quantitative and qualitative methods of analysis, driven by an asset-base approach. Emphasis on assets is appropriate given high inequalities in the distribution of productive assets among households and geographical areas in Honduras. Such inequalities are likely to constrain how the poor share in the benefits of growth, even under appropriate policy regimes. We focus on household assets (broadly defined to include natural, physical, human, financial, social and locational assets) and their combinations necessary to take advantage of economic opportunities. We examine the relative contributions of these assets, and identify the combinations of productive, social, and location-specific assets that matter most to raise incomes and take advantage of prospects for poverty-reducing growth. Factor and cluster analysis techniques are used to identify and group different livelihood strategies; and econometric analysis is used to investigate the determinants of different livelihood strategies and the major factors that impact on income. Spatial analysis, community livelihood studies and project stocktakings are brought in to complement some of the more quantitative household survey data used. Our conclusions and recommendations are mainly focused on hillsides and hillside areas since the majority of the available data is for these areas.

Oregon Wine History Project™ Interview Transcript: Susan Sokol Blosser

This document is a transcription of the interview with winemaker Susan Sokol Blosser conducted by Jeff D. Peterson on July 14, 2010 as part of the Oregon Wine History Project™. Susan Sokol Blosser discusses the early days of the Oregon wine industry and gives her personal account of how she came to grow grapes and produce wines in the Willamette Valley. Assisting in the production of this interview were videographers Barrett Dahl and Mark Pederson; exhibit and collections coordinators Barrett Dahl, Sara Juergensen, and Keni Sturgeon (faculty advisor); and project historical researchers Dulce Kersting and Lissa Wadewitz (faculty advisor). The duration of the interview is 47 minutes and 17 seconds

Building stories -- the art of the project manager in exhibition development : an analysis of Death and Diversity at Wellington Museum : a thesis presented in partial fulfillment of the requirements for the degree of Master of Arts in Museum Studies, at Massey University, Manawatū, New Zealand

This thesis examines the role of both project management and the project manager in museum exhibition development at one museum. Specifically it investigates the necessity of such practice and the various inherent factors that lead to exhibition development success. It argues that project management is not only vital to this success but that such success is dependent on the unique skill and ability of the project manager. Ultimately this thesis advocates for a special breed of project manager suited to the museum environment. Owing to limited museum-based research in this field, it is unclear how effective project management is in developing museum exhibitions and subsequently, understanding the effectiveness of the project manager’s contributions to this process. This research provides a much-needed qualitative study that not only examines the role, but also provides insight into the mindset of one such professional. In addition to introducing museum project management, an in-depth case study focusing on the Wellington Museum (former Museum of Wellington City & Sea) investigates the intricacies associated with this practice. In particular it centres on the Death and Diversity exhibition staged in 2011, where the Museum initiated an inaugural project manager role and then retained it for a large-scale capital development planned for completion in 2020. Utilising qualitative research methods this thesis builds three sections: a context chapter, one case study, and an ethnographic study. Open-ended, in-depth interviewing of both the Museum’s project manager and the director give valuable insight into the practice and perceptions about the role. An observational study examines project manager behaviour and interaction during project meetings. The analysis highlights the complexities of contemporary exhibition development. In an increasingly evolving and resource-limited world of equally increasing scrutiny, this advocates for a profession tailor-made for such complexity in the unique museum environment