Análise da composição, abundância e distribuição da comunidade fitoplanctônica nos reservatórios do sistema em cascata do Médio e Baixo rio Tietê/SP

Com a finalidade de atender a demanda energética, muitos reservatórios foram construídos no Brasil e, notadamente na região Sudeste, as construções das barragens não somente atenderam aos usos múltiplos (geração de energia, irrigação, lazer e abastecimento público), como também foram elementos propulsores da economia regional, contribuindo para a expansão das atividades industriais e rurais, bem como, um desordenado crescimento urbano. Em conseqüência da falta de planejamento, áreas naturais foram desmatadas, sendo substituídas por formas de plantio inadequadas e por projetos de especulação imobiliária não condizentes com a sustentabilidade ambiental. No decorrer das últimas décadas, os impactos aumentaram em magnitude e extensão, ocasionando sérios problemas aos recursos hídricos, culminando em conflitos pelo uso da água. Dentro deste contexto, destaca-se o rio Tietê, o qual percorre importantes cidades e extensas áreas rurais no Estado de São Paulo, sendo que, neste longo percurso, recebe a contribuição de diversos tributários (poluídos ou não) e efluentes urbanos, industriais e aqueles derivados de fontes não pontuais, além do processo de fragmentação que foi instalado a partir da construção de inúmeras barragens. De forma conjunta, todos os fatores promoveram alterações significativas no sistema e, procurando avaliar a situação atual dos reservatórios, desenvolveu-se uma pesquisa direcionada à análise da composição, densidade e distribuição da comunidade fitoplanctônica e sua relação com as variáveis limnológicas, climatológicas e hidrodinâmicas dos reservatórios da Barra Bonita, Bariri, Ibitinga, Promissão, Nova Avanhandava, Três Irmãos, além dos rios Tietê e Piracicaba e parte do rio Paraná (reservatório de Jupiá e a Jusante do reservatório de Ilha Solteira). Para tanto, foram realizadas coletas nos meses de fevereiro, maio, julho e outubro de 2000 e os resultados obtidos demonstram uma elevada concentração de nutrientes, com redução na seqüência dos reservatórios, além da variabilidade temporal, com efeito significativo da precipitação no transporte de materiais, promovendo alterações no estado trófico de cada sistema. A disponibilidade de nutrientes, transparência da água, vazão e tempo de residência, associados aos fatores climatológicos, foram elementos importantes no estabelecimento das populações, influenciando a composição, densidade e distribuição da comunidade fitoplanctônica, a qual apresentou maior dominância das classes Cyanophyceae e Chlorophyceae, com maior contribuição em densidade e riqueza de espécies, respectivamente.

Rural Development Trends and Land Use Policy in Colorado: Contributors to Habitat Fragmentation?

Fragmentation of wildlife habitat is a primary driver of global species decline. A major contributor to habitat fragmentation in the United States is rural residential development. Rural development in Colorado is occurring at rates far greater than the national average. Additionally, the lack of state-level planning control coupled with a lack of comprehensive, effective planning tools at the local level creates conditions that contribute to habitat fragmentation in many rural counties. Greater oversight and involvement in land use planning is needed by the state level to assist county governments. This study provides five recommendations to strengthen Colorado state land use policy in order to reduce habitat fragmentation.

A methodology for evacuation route planning inside buildings using geospatial technology

Evacuation route planning is a fundamental task for building engineering projects. Safety regulations are established so that all occupants are driven on time out of a building to a secure place when faced with an emergency situation. As an example, Spanish building code requires the planning of evacuation routes on large and, usually, public buildings. Engineers often plan these routes on single building projects, repeatedly assigning clusters of rooms to each emergency exit in a trial-and-error process. But problems may arise for a building complex where distribution and use changes make visual analysis cumbersome and sometimes unfeasible. This problem could be solved by using well-known spatial analysis techniques, implemented as a specialized software able to partially emulate engineer reasoning. In this paper we propose and test an easily reproducible methodology that makes use of free and open source software components for solving a case study. We ran a complete test on a building floor at the University of Alicante (Spain). This institution offers a web service (WFS) that allows retrieval of 2D geometries from any building within its campus. We demonstrate how geospatial technologies and computational geometry algorithms can be used for automating the creation and optimization of evacuation routes. In our case study, the engineers’ task is to verify that the load capacity of each emergency exit does not exceed the standards specified by Spain’s current regulations. Using Dijkstra’s algorithm, we obtain the shortest paths from every room to the most appropriate emergency exit. Once these paths are calculated, engineers can run simulations and validate, based on path statistics, different cluster configurations. Techniques and tools applied in this research would be helpful in the design and risk management phases of any complex building project.

La expansión del área urbana de Segovia. Transformación paisajística del entorno rural periurbano

En la última década, el área urbana de Segovia ha experimentado un profundo cambio radicado en la urbanización de municipios del entorno rural periurbano. Los crecimientos más significativos se han dado en los núcleos situados en torno al eje de la carretera CL-601 que une Segovia con el Real Sitio de San Ildefonso. La expansión del área urbanizada en este espacio genera cambios en la dinámica territorial que pueden llegar a producir desajustes funcionales que afecten negativamente a los valores patrimoniales y paisajísticos que definen a este territorio.

Amphibian Hotspots and Conservation Priorities in Eastern Cuba Identified by Species Distribution Modeling

The high rate of amphibian endemism and the severe habitat modification in the Caribbean islands make them an ideal place to test if the current protected areas network might protect this group. In this study, we model distribution and map species richness of the 40 amphibian species from eastern Cuba with the objectives of identify hotspots, detect gaps in species representation in protected areas, and select additional areas to fill these gaps. We used two modeling methods, Maxent and Habitat Suitability Models, to reach a consensus distribution map for each species, then calculate species richness by combining specific models and finally performed gap analyses for species and hotspots. Our results showed that the models were robust enough to predict species distributions and that most of the amphibian hotspots were represented in reserves, but 50 percent of the species were incompletely covered and Eleutherodactylus rivularis was totally uncovered by the protected areas. We identified 1441 additional km2 (9.9% of the study area) that could be added to the current protected areas, allowing the representation of every species and all hotspots. Our results are relevant for the conservation planning in other Caribbean islands, since studies like this could contribute to fill the gaps in the existing protected areas and to design a future network. Both cases would benefit from modeling amphibian species distribution using available data, even if they are incomplete, rather than relying only in the protection of known or suspected hotspots.

Strasbourg, France, City Planning, 1880 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Bebauungsplan für die Erweiterung der Stadt Strassburg. It was published by Druck und Verlag R. Schultz & Cie. in 1880. Scale 1:5,000. Covers Strasbourg, France. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the 'European Datum 1950 UTM Zone 32N' coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows development plans for the expansion of the city of Strasbourg. It includes features such as existing and proposed roads (with measurements), railroads and stations, drainage, built-up areas and selected buildings, fortification, ground cover, parks, and more. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

Strasbourg, France, City Planning, 1910 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Plan der Stadt Strassburg : aufgestellt nach dem amtlichen Bebauungsplan. It was published by W. Heinrich in 1910. Scale 1:7,500. Covers Strasbourg, France. Map in German. The image inside the map neatline is georeferenced to the surface of the earth and fit to the 'European Datum 1950 UTM Zone 32N' coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows development plans for the expansion of the city of Strasbourg. It includes features such as existing and proposed roads, railroads and stations, street-railroads, drainage, built-up areas and selected buildings, ground cover, parks, city district boundaries, and more. Includes black pen-and-ink manuscript additions and type-script paper pasted over map in English; red and yellow lines showing the public lands & buildings & lands owned by municpality. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

Kolkata, India, City Planning, 1913 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: City of Calcutta, E. P. Richards. It was printed by Jennings & Bewley in 1913. Scale 1:21,120. Covers Kolkata and a portion of Hāora, India. The image inside the map neatline is georeferenced to the surface of the earth and fit to the 'WGS 1984 UTM Zone 45N' coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as residential and industrial zoning districts and redevelopment zones, roads, railroads, drainage, canals, built-up areas and selected buildings, fortification, docks, parks, and more. Includes index, note, legend of class dwellings, and census "map" (i.e., chart). This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

Rural Labour Market Developments in the Former Yugoslav Republic of Macedonia. Factor Markets Working Paper No. 5, September 2011

The significant changes in the quantitative and qualitative characteristics of human resources in rural Macedonia can be explained by the continued trend of emigration from villages to urban areas and abroad. The intensity of emigration has altered the demographic structure and reproductive base of the rural population, along with the income of rural households. The rural and agricultural labour market faces a mismatch with respect to the unfavourable age, education and spatial distribution of the total labour force. A reduction in the participation of women in the agricultural labour force is a new feature. The overall transformation is apparent in the income structure of rural households. An increase in the share of households with mixed income sources notably stems from households that receive remittances and foreign currency funds from family members abroad. The demographic revitalisation of rural areas depends on economic revitalisation, with a more rational use of the labour force and human resources, as well as a restructuring of agricultural production and agricultural holdings. In addition, improvements are necessary in the functioning of market institutions to better meet the needs of smaller farmers and the rural economy.

Characteristics of income distribution in eastern Paraguay /

"Contract no. 53-319R-9-90."

A survey of the literature on income distribution and the fulfillment of basic human needs in the Caribbean region /

Bibliography: p. [62]-64.

Technology for rural transportation: "Simple Solutions"".

Turner-Fairbank Highway Research Center, McLean, Va.

National conference on rural public transportation. Sixth. Final report.

Federal Highway Administration, Office of Highway Planning, Washington, D.C.

Farmworkers in rural America, 1971-1972 : hearings ... Ninety-second Congress, first and second session.

Hearings held July 22, 1971-

The Product is progress : Rural Electrification in Costa Rica /

"October 1981."