|
|
|
| Registros recuperados: 94 | |
|
|
| Gomes,José Diego; Abrunhosa,Fernando Araújo; Simith,Darlan de Jesus de Brito; Asp,Nils Edvin. |
| At the coastal zone sediments, water and organisms interact intensely. At equatorial tidal-dominated coast mangroves are abundant. These areas are well-known for their ecological importance. Considering the mangroves of Atlantic South America, the mangrove crab, Ucides cordatus has ecological and economic prominence. High densities of this crab are found on the Amazon coast. This study investigates the sediment distribution of the Bragança mangrove area (Amazon coast, Brazil) and its correlations with vegetation and mangrove crab distribution. Sediments of 47 sites, as well as crabs from sites with different sediment and vegetation, were sampled. Results show that surface sediment of the area is mainly composed by silt (59%), with 21% sand and 20% clay.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal plain; Sediment distribution; Tides; Vegetation; North Brazil; Mangrove crab. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000400010 |
| |
|
| |
|
|
| Mendes,Cândida; Dias,Eduardo. |
| The Azores archipelago in the North Atlantic is an important area for biodiversity because it is rich in rare species and habitats, and almost undisturbed. Sanguinhal mire was originally a lake that evolved through paludification into a peat habitat. It is located inside Nature 2000 (European Union for Protection of Nature and Biodiversity, Council Directive 92/43/EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora, Habitat Directive Annex I(b) habitat 7140) area of Santa Bárbara and Pico Alto Mountains on the island of Terceira, and it is a good example of a basin peatland type that was first discovered in 1998. This paper provides baseline information on its flora, vegetation communities, structure, surface hydrology... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conductivity; European Habitats Directive; Hydrology; PH; Vegetation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062009000300022 |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| BAO,FRANCIELLI; LEANDRO,THALES D.; ROCHA,MAÍRA DA; SANTOS,VANESSA S. DOS; STEFANELLO,THIAGO H.; ARRUDA,RAFAEL; POTT,ARNILDO; DAMASCENO-JÚNIOR,GERALDO A.. |
| ABSTRACT The Brazilian Pantanal is an extensive wetland with heterogeneous habitats, primarily due to the river-floodplain system and plants with differential adaptations and reproductive strategies. Factors such as altitude, distance among plant formations, and flood pulse must be considered to better understand its diversity. Aiming to assess the influence of biogeographic patterns in this system, we analyzed the floristic composition of six areas along the Paraguay River, including residual relieves, verifying the pattern of similarity, and effects of distance and altitude. We recorded 356 species in 87 families, mostly perennial (75%), and some annuals (15%) and pluriannuals (5%). Herbaceous plants were the most represented (48%), followed by arboreal... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biogeography; Floodplain; Floristics; Pantanal; Vegetation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100085 |
| |
|
|
| Magnago,Luiz F.S.; Martins,Sebastião V.; Schaefer,Carlos E.G.R.; Neri,Andreza V.. |
| The aim of this study was to determine changes in composition, abundance and richness of species along a forest gradient with varying soils and flood regimes. The forests are located on the left bank of the lower Jucu River, in Jacarenema Natural Municipal Park, Espírito Santo. A survey of shrub/tree species was done in 80 plots, 5x25 m, equally distributed among the forests studied. We included in the sampling all individuals with >3.2 cm diameter at breast height (1.30 m). Soil samples were collected from the surface layer (0-10 cm) in each plot for chemical and physical analysis. The results indicate that a significant pedological gradient occurs, which is influenced by varying seasonal groundwater levels. Restinga forest formations showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vegetation; Flooded Forests; Coastal ecosystem; Sandy Soils; Quaternary deposits; Marine influence; Riparian forests. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000300023 |
| |
|
| |
|
|
| CAVALCANTE,A. DE M. B.; SOARES,J. J.; FIGUEIREDO,M. A.. |
| The Baturité Mountain Range, located in the State of Ceará (BRA), displays on its highest levels a vegetation viewed as a disjunction from the Atlantic Forest in the East of Brazil. Among the various attributes associated with this vegetation, the abundance of water resources and a high biodiversity have a more outstanding relevance. However, in view of the current accelerated deforestation process, those attributes may be threatened in a near future. Therefore, the present work is a comparative study with its focus on vegetal community organization (tree sinusiae) and the floristic similarity and the phytodiversity of two areas in different successive stages, preserved and deforested 24 years ago. The aim of that intent was to obtain information that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical forest; Phytosociology; Vegetation. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000400003 |
| |
|
|
| Enríquez Enríquez, Enrique David. |
| Los estudios de biodiversidad del Parque Nacional Sierra de Órganos, constituyen una herramienta útil para el análisis de estrategias para la conservación biológica. De la colección e identificación de la flora vascular del área resultó una lista florística que incluye 406 especies, 254 géneros y 75 familias. Con base en fotointerpretación, colectas botánicas y 29 muestreos cuantitativos, se reconocen nueve tipos de vegetación definidos por su fisonomía y especies dominantes. Para el cálculo de indicadores de diversidad, se consultó bibliografía especializada, se usaron los índices de similitud de Sorensen-Dice, y el de diversidad de Wilson y Schmida, así como las categorías de rareza de Rabinowitz. Los resultados muestran que hay 3 patrones de... |
| Tipo: Tesis |
Palavras-chave: Conservación; Flora; Sierra de Órganos; Vegetación; Zacatecas; Doctorado; Botánica; Conservation; Vegetation. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1283 |
| |
|
|
| Chalmers, Nigel; Rhodes University, South Africa;; Fabricius, Christo; Rhodes University, South Africa; c.fabricius@ru.ac.za. |
| Local ecological knowledge (LEK) can shed light on ecosystem change, especially in under-researched areas such as South Africa’s Wild Coast. However, for ecosystem planning purposes, it is necessary to assess the accuracy and validity of LEK, and determine where such knowledge is situated in a community, and how evenly it is spread. Furthermore, it is relevant to ask: does LEK add value to science, and how do science and local knowledge complement one another? We assessed change in woodland and forest cover in the Nqabara Administrative Area on South Africa’s Wild Coast between 1974 and 2001. The inhabitants of Nqabara are “traditional” Xhosa-speaking people who are highly dependent on natural resources for their... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Cultivation; Fire; GIS; Land-cover change; Landscape ecology; Local ecological knowledge; Politics; Scientific knowledge; Vegetation. |
| Ano: 2007 |
|
| |
|
|
| Ferreira,Thomás R.; Pace,Frederico T. Di; Silva,Bernardo B. Da; Delgado,Jéssica R.. |
| ABSTRACT: The aim of this study was to identify areas susceptible to drought and under desertification in the Brazilian Northeast, more specifically in the states of Alagoas, Pernambuco, and Sergipe. The study was based on the 2000-2014 time period, relative frequency, Vegetation Condition Index (VCI) dataset derived from MOD13Q1 products (vegetation indices derived from the Moderate Resolution Imaging Spectroradiometer sensor). The areas located within the desertification nucleus of Cabrobó, in the southwestern of Pernambuco and surrounding the Águas Belas municipality were considered susceptible to drought and desertification. Some municipalities in the countryside of Alagoas showed a very low relative frequency of VCI data (45-50%), and occurrence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Degradation; Vegetation; Remote sensing. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000601190 |
| |
|
|
| Peters,Jan; Wieme,Vanessa; Boeckx,Pascal; Samson,Roeland; Godoy,Roberto; Oyarzún,Carlos; Verhoest,Niko. |
| Ecohydrology investigates how hydrological processes affect plant growth and vice versa. As these mutual interactions are important in many ecosystems, ecohydrology has wide applicability. An important aspect of ecohydrological research is the assessment and prediction of the occurrence of plant species or vegetation types in relation to hydrological or hydrogeochemical habitat conditions. Several models have been developed (e.g. DEMNAT, ICHORS, ITORS, ITORS-VL). All of these models are data driven. Consequently a monitoring network has to be installed, possibly in addition to existing databases. These networks are ecosystem specific but the most widely monitored variables are: water table depth, electric conductivity of groundwater, soil moisture content... |
| Tipo: Journal article |
Palavras-chave: Ecohydrology; Modelling; Vegetation; Hydrology; Decision support systems. |
| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432005000200007 |
| |
|
|
| Um dos maiores desafios para o desenvolvimento sustentável do Semi-Árido brasileiro é oferecer ao produtor opções que possam satisfazer suas necessidades socioeconômicas e que sejam adaptadas às difíceis condições ambientais da região. Neste sentido, pesquisas com espécies vegetais exóticas vêm sendo feitas, buscando alternativas viáveis para a região Semi-Árida brasileira. Nesta publicação, são descritas dez espécies. Para cada espécie, há informações contendo a descrição botânica, o nome científico, o nome vulgar, as formas de propagação, as pragas e doenças mais comuns e a utilização e o manejo cultural. O principal objetivo desta obra é, pois, divulgar informações sobre as espécies em destaque na região, as quais servirão de pesquisa e consulta para... |
| Tipo: Livros |
Palavras-chave: Capim-búfel; Capim-urocloa; Leucena; Melancia forrageira; Região semi-árida; Planta nativa; Caatinga; Planta exótica; Botanica; Planta forrageira; Algaroba; Gliricidia; Gramínea Forrageira; Guandu; Milheto; Palma Forrageira; Sorgo; Vegetation; Vegetation types; Plant biology; Plant adaptation; Plant ecology. |
| Ano: 2005 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/155430 |
| |
|
| |
| Registros recuperados: 94 | |
|
|
|
