Results 41 to 50 of about 362 (100)

Effects of Land Use and Environmental Characteristics on Condition Factor and Reproductive Aspects of Serrapinnus notomelas (Brazil)

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 8, August 2025.
ABSTRACT Changes in land use and land cover severely impact the ecological structure of aquatic ecosystems and can lead to losses in fish populations. To further examine the cause and effect, the present study aimed to evaluate (1) differences in land use and cover among subbasins of the Vacaria, Brilhante, Dourados and Lower Ivinhema Rivers, (2 ...
Bianca de Oliveira Souza, Lucilene Finoto Viana, Yzel Rondon Súarez, Sidnei Eduardo Lima‐Junior   +3 more
wiley   +1 more source

Procesamientos GNSS en línea como potenciales alternativas a diferentes aplicaciones geodésicas

Uniciencia, 2015
En este estudio se hace una descripción en cuanto a utilización, capacidad de procesamiento, tipos de archivos y resultados, de una serie de programas en línea para la elaboración de datos de GNSS.
Jorge Moya-Zamora, Sara Bastos-Gutiérrez   +1 more
doaj   +1 more source

"Versionamiento 2009-2010 de la vulnerabilidad intrínseca a la contaminación, y el modelo hidrogeológico matemático de Villavicencio para un área de 30.000 Ha, utilizando herramientas gis y visual-modflow - ""análisis 3d""" [PDF]

, 2014
Las bases de datos geoespaciales utilizando ArcSDE permiten administrar la información geográfica en un sistema multiusuario, proporcionando una interfaz abierta a los sistemas de administración de bases de datos relacionales, las cuales permiten a la ...
Leal Sierra, Jesús Alirio
core  

Between dunes and estuary: Forecasting mangrove forest change on primate culture and isolated livelihoods in Maranhão, Brazil

Geo: Geography and Environment, Volume 12, Issue 2, July‐December 2025.
Short Abstract The unique ecological conditions of the mangrove forests in the Rio Preguiças Estuary, Maranhão, Brazil, support a culturally isolated population of bearded capuchin monkeys and contribute significantly to the livelihoods and economy of the local community.
Andrea Presotto, Stuart E. Hamilton, Gustavo A. Castellanos‐Galindo, Ricardo R. Santos, Roberta Salmi   +4 more
wiley   +1 more source

From Disturbance to Recovery: Unveiling the Role of Goats and Ecological Drivers on Vegetation Dynamics of Trindade Island, South Atlantic, Brazil

Journal of Vegetation Science, Volume 36, Issue 3, May/June 2025.
We analyzed long‐term vegetation dynamics on Trindade Island, assessing the influence of feral goats and abiotic factors using remote sensing and field data. Vegetation cover increased over time, with forests and grasslands expanding. NDVI effectively captured these changes, revealing strong biotic and abiotic interactions.
Felipe Zuñe, Márcia Gonçalves Rogério, Ruy José Válka Alves, Nílber Gonçalves da Silva   +3 more
wiley   +1 more source

The GrassSyn dataset: Soil organic carbon stocks in Brazilian grassy ecosystems

Journal of Environmental Quality, Volume 54, Issue 2, Page 335-348, March/April 2025.
Abstract Although ecosystem management and restoration are known to enhance carbon storage, limited knowledge of ecosystem‐specific soil organic carbon (SOC) stocks and processes hinders the development of climate‐ready, biodiversity‐focused policies. Baseline SOC stocks data for specific ecosystems is essential.
Bianca Ott Andrade, Cristhian Hernandez Gamboa, Gabriel William Dias Ferreira, Martin Wiesmeier, Eduardo Delgado Assad, Carlos Eduardo Pellegrino Cerri, José Márcio Mello, Vinícius Augusto Morais, Gerhard E. Overbeck, Herval Vieira Pinto‐Junior, José Roberto Soares Scolforo, Carlos Gustavo Tornquist   +11 more
wiley   +1 more source

Integração de redes GNSS: uma proposta metodológica de densificação da rede SIRGAS na América do Sul [PDF]

, 2011
A característica continental do Brasil implica na necessidade de constantes desafios científicos em pesquisas espaciais e tecnológicas, que visam contribuir ao engajamento de centros de pesquisas, fornecendo instrumentos às atividades espaciais no país e
AMIRI-SIMKOOEI A.R., BEVIS M., COSTA S. M. A., COSTA S. M. A., FORTES L. P, FRITSCHE M., GEMAEL C., MARQUES F. A., MONICO J. F. G., MONICO J. F. G., STEINGENBERGER P.   +10 more
core   +5 more sources

Evaluación del comportamiento cinemático de una serie de estaciones del Sistema Geocéntrico para las Américas procesadas con Precise Point Positioning en línea

Uniciencia, 2014
Mediante un cálculo en la modalidad Precise Point Positioning (PPP) en línea, se procesaron más de dos años de observaciones diarias de 14 estaciones de operación continua pertenecientes al Sistema Geocéntrico para las Américas (SIRGAS), las cuales están
Jorge Moya Zamora, Sara Bastos Gutiérrez, María José Rivas Guzmán, Gabriela Cordero Gamboa   +3 more
doaj  

Efforts for aligning the Brazilian Height System to the International Height Reference System [PDF]

, 2018
The International Height Reference System (IHRS) consolidated the idea of a world height system (WHS) according to the IAG Resolution 1/2015. Since 2000, the majority of activities related to the modernization of the Brazilian Height System (BHS) has ...
Ferreira, Vagner G., Freitas, Sílvio R. C. de, Luz, Roberto T.   +2 more
core   +2 more sources

Length‐Weight Relationships of Sixteen Fish Species From the Upper Tietê Basin, Southeaster Brazil

Journal of Applied Ichthyology, Volume 2025, Issue 1, 2025.
This study investigated the length‐weight relationship (LWR) of 16 fish species from the Upper Tietê Basin under the influence of the Atlantic Forest biome, aiming to provide updated morphometric data and contribute to the knowledge of Neotropical ichthyofauna. 2811 specimens were collected and distributed across five orders and 10 families.
Luís Gustavo Nogueira de Carvalho, Beatriz Carine Gazzola Prieto, Camila Silva Bento, Dalton Jorge Neief Ganem, Matheus Oliveira Fagaça, Ariane Almeida Vaz, Welber Senteio Smith, Georgii Ruban   +7 more
wiley   +1 more source