A new form of land concentration in Colombia

This article aims to show how the Law 1448 of 2011, which explains reparation and restitution of victims, and the National Development Plan (NDP) 2011-2014 generate land concentration in Colombia -- This is due to how the NDP objectives disintegrate the Law 1448 objectives; this phenomenon could be explained using an agency model and the subsequent moral risk issue formed between the State and the victims -- Regarding these results, a game-theory model was built, and this effectively concludes that the Law 1448 and the NDP generate land concentration in Colombia

Plan of a tract of land (marked in the General Plan no. 7), containing in the whole 5000 acres, & divided into 20 plantations of 250 acres each, situate on a left hand branch of Elk River, & on the head waters of Salt Lick Creek, in Harrison County, State of Virginia /

Covers part of Harrison County (W.Va.)

[Plat of land grant survey in South Carolina, accompanied by deed of grant] /

Pen-and-ink.

Plan of 59 different tracts of land (of 1000 acres each) containing in the whole 59,000 acres : situate on different waters of south Edisto River, except seven tracts (or 7000 acres) are lying on the waters of north Edisto River in the District of Orangeburgh, State of South Carolina /

Pen-and-ink and watercolor.

Plat of that tract of country in the territory northwest of the Ohio appropriated for military services and described in the Act of Congress untitled "An act regulating the grants of land appropriated for military services and for the Society of United Brethren for propagating the gospel among the heathen" /

"Part of the seven ranges survey'd agreeable to the ordinance of congress of May 20th, 1785."

Water Demand and Allocation in the Mara River Basin, Kenya/Tanzania in the Face of Land Use Dynamics and Climate Variability

The Mara River Basin (MRB) is endowed with pristine biodiversity, socio-cultural heritage and natural resources. The purpose of my study is to develop and apply an integrated water resource allocation framework for the MRB based on the hydrological processes, water demand and economic factors. The basin was partitioned into twelve sub-basins and the rainfall runoff processes was modeled using the Soil and Water Assessment Tool (SWAT) after satisfactory Nash-Sutcliff efficiency of 0.68 for calibration and 0.43 for validation at Mara Mines station. The impact and uncertainty of climate change on the hydrology of the MRB was assessed using SWAT and three scenarios of statistically downscaled outputs from twenty Global Circulation Models. Results predicted the wet season getting more wet and the dry season getting drier, with a general increasing trend of annual rainfall through 2050. Three blocks of water demand (environmental, normal and flood) were estimated from consumptive water use by human, wildlife, livestock, tourism, irrigation and industry. Water demand projections suggest human consumption is expected to surpass irrigation as the highest water demand sector by 2030. Monthly volume of water was estimated in three blocks of current minimum reliability, reserve (>95%), normal (80–95%) and flood (40%) for more than 5 months in a year. The assessment of water price and marginal productivity showed that current water use hardly responds to a change in price or productivity of water. Finally, a water allocation model was developed and applied to investigate the optimum monthly allocation among sectors and sub-basins by maximizing the use value and hydrological reliability of water. Model results demonstrated that the status on reserve and normal volumes can be improved to ‘low’ or ‘moderate’ by updating the existing reliability to meet prevailing demand. Flow volumes and rates for four scenarios of reliability were presented. Results showed that the water allocation framework can be used as comprehensive tool in the management of MRB, and possibly be extended similar watersheds.

Analysis of Land Use Change as a Method of Predicting Water Demands in an Urbanizing Environment: Redland, Miami-Dade County, Florida

The fluctuation in water demand in the Redland community of Miami-Dade County was examined using land use data from 2001 and 2011 and water estimation techniques provided by local and state agencies. The data was converted to 30 m mosaicked raster grids that indicated land use change, and associated water demand measured in gallons per day per acre. The results indicate that, first, despite an increase in population, water demand decreased overall in Redland from 2001 to 2011. Second, conversion of agricultural lands to residential lands actually caused a decrease in water demand in most cases while acquisition of farmland by public agencies also caused a sharp decline. Third, conversion of row crops and groves to nurseries was substantial and resulted in a significant increase in water demand in all such areas converted. Finally, estimating water demand based on land use, rather than population, is a more accurate approach.

A Transcriptome Atlas of Physcomitrella patens Provides Insights into the Evolution and Development of Land Plants

Post-print version of the article.

Supporting land use change modelling with automated monitoring of land use dynamics in the La Plata River Basin.

2008

Arrendamientos rurales en la provincia de Buenos Aires, entre la ley y la práctica, 1940-1960

En el presente trabajo nos proponemos analizar el funcionamiento del sistema de arrendamientos rurales, así como las transformaciones respecto del denominado "sistema tradicional" y el impacto que sobre el mismo tuvo la legislación agraria de "emergencia" sancionada en esos años. Abordamos el estudio desde una óptica regional comparativa para lo cual hemos seleccionado cuatro partidos bonaerenses, uno por cada área productiva en que se divide la provincia ya que creemos que existe una relación muy estrecha entre el sistema de tenencia de la tierra (arrendamiento o propiedad), la actividad productiva (agricultura o ganadería) y el tipo de explotación predominante (pequeñas unidades familiares o grandes explotaciones).

Arrendamientos rurales en la provincia de Buenos Aires, entre la ley y la práctica, 1940-1960

En el presente trabajo nos proponemos analizar el funcionamiento del sistema de arrendamientos rurales, así como las transformaciones respecto del denominado "sistema tradicional" y el impacto que sobre el mismo tuvo la legislación agraria de "emergencia" sancionada en esos años. Abordamos el estudio desde una óptica regional comparativa para lo cual hemos seleccionado cuatro partidos bonaerenses, uno por cada área productiva en que se divide la provincia ya que creemos que existe una relación muy estrecha entre el sistema de tenencia de la tierra (arrendamiento o propiedad), la actividad productiva (agricultura o ganadería) y el tipo de explotación predominante (pequeñas unidades familiares o grandes explotaciones).

Arrendamientos rurales en la provincia de Buenos Aires, entre la ley y la práctica, 1940-1960

En el presente trabajo nos proponemos analizar el funcionamiento del sistema de arrendamientos rurales, así como las transformaciones respecto del denominado "sistema tradicional" y el impacto que sobre el mismo tuvo la legislación agraria de "emergencia" sancionada en esos años. Abordamos el estudio desde una óptica regional comparativa para lo cual hemos seleccionado cuatro partidos bonaerenses, uno por cada área productiva en que se divide la provincia ya que creemos que existe una relación muy estrecha entre el sistema de tenencia de la tierra (arrendamiento o propiedad), la actividad productiva (agricultura o ganadería) y el tipo de explotación predominante (pequeñas unidades familiares o grandes explotaciones).

An analysis of household farm investment decisions under varying land tenure arrangements in Ghana

Land tenure insecurity is widely perceived as a disincentive for long-term land improvement investment hence the objective of this paper is to evaluate how tenure (in)security associated with different land use arrangements in Ghana influenced households’ plot level investment decisions and choices. The paper uses data from the Farmer-Based Organisations (FBO) survey. The FBO survey collected information from 2,928 households across three ecological zones of Ghana using multistaged cluster sampling. Probit and Tobit models tested the effects of land tenancy and ownership arrangements on households’ investment behaviour while controlling other factors. It was found that marginal farm size was inversely related to tenure insecurity while tenure insecurity correlate positively with value of farm land and not farm size. Individual ownership and documentation of land significantly reduced the probability of households losing uncultivated lands. Individual land ownership increased both the probability of investing and level of investments made in land improvement and irrigation probably due to increasing importance households place on land ownership. Two possible explanations for this finding are: First, that land markets and land relations have changed significantly over the last two decades with increasing money transaction and fixed agreements propelled by population growth and increasing value of land. Secondly, inclusion of irrigation investment as a long term investment in land raises the value of household investment and the time period required to reap the returns on the investments. Households take land ownership and duration of tenancy into consideration if the resource implications of land investments are relatively huge and the time dimension for harvesting returns to investments is relatively long.

Discharge-calcium concentration relationships in streams of the Amazon and Cerrado of Brazil: soil or land use controlled

Stream discharge-concentration relationships are indicators of terrestrial ecosystem function. Throughout the Amazon and Cerrado regions of Brazil rapid changes in land use and land cover may be altering these hydrochemical relationships. The current analysis focuses on factors controlling the discharge-calcium (Ca) concentration relationship since previous research in these regions has demonstrated both positive and negative slopes in linear log(10)discharge-log(10)Ca concentration regressions. The objective of the current study was to evaluate factors controlling stream discharge-Ca concentration relationships including year, season, stream order, vegetation cover, land use, and soil classification. It was hypothesized that land use and soil class are the most critical attributes controlling discharge-Ca concentration relationships. A multilevel, linear regression approach was utilized with data from 28 streams throughout Brazil. These streams come from three distinct regions and varied broadly in watershed size (< 1 to > 10(6) ha) and discharge (10(-5.7)-10(3.2) m(3) s(-1)). Linear regressions of log(10)Ca versus log(10)discharge in 13 streams have a preponderance of negative slopes with only two streams having significant positive slopes. An ANOVA decomposition suggests the effect of discharge on Ca concentration is large but variable. Vegetation cover, which incorporates aspects of land use, explains the largest proportion of the variance in the effect of discharge on Ca followed by season and year. In contrast, stream order, land use, and soil class explain most of the variation in stream Ca concentration. In the current data set, soil class, which is related to lithology, has an important effect on Ca concentration but land use, likely through its effect on runoff concentration and hydrology, has a greater effect on discharge-concentration relationships.

Assessing land availability to produce biomass for energy: The case of Brazilian charcoal for steel making

The paper discusses the availability of biomass in Brazil to supply charcoal to the steel industry on the bases of an initial global assessment of land potentially available for plantations and of Brazilian data that allows refining the assessment and specifying the issue of practical availability. Technical potentials are first assessed through a series of simple rules against direct competition with agriculture, forests and protected areas, and of quantitative criteria, whether geo-climatic (rainfall), demographic (population density) or legal (reserves). Institutional, social and economic factors are then identified and discussed so as to account for the practical availability of Brazilian biomass through six criteria. The ranking of nine Brazilian States according to these criteria brings out the necessary trade-offs in the selection of land for plantations that would efficiently supply charcoal to the steel industry. (C) 2008 Elsevier Ltd. All rights reserved.