Results 51 to 60 of about 362 (100)

Temporal Dynamics of Species Richness and Composition in a Peri‐Urban Tropical Frog Community in Central Brazil

Ecology and Evolution, Volume 14, Issue 11, November 2024.
This study address how species coexistence and species–environment relationship are impacted by temporal variation in climate sub‐urban area. ABSTRACT Analyzing the temporal dynamics of ecological communities can shed light on coexistence mechanisms and help understand how populations and communities will behave in the face of climate change.
Marcos R. Severgnini, Mônica M. de Oliveira, Luciana M. Valério, Diogo B. Provete   +3 more
wiley   +1 more source

Exposing illegal hunting and wildlife depletion in the world's largest tropical country through social media data

Conservation Biology, Volume 38, Issue 5, October 2024.
Abstract Globally, illegal sport hunting can threaten prey populations when unregulated. Due to its covert nature, illegal sport hunting poses challenges for data collection, hindering efforts to understand the full extent of its impacts. We gathered social media data to analyze patterns of illegal sport hunting and wildlife depletion across Brazil. We
Hani R. El Bizri, Marcela A. Oliveira, Aline Pessutti Rampini, Simon Knoop, Julia E. Fa, Lauren Coad, Thais Queiroz Morcatty, Gabriel Favero Massocato, Arnaud L. J. Desbiez, João Vitor Campos‐Silva, Daniel Zani La Laina, José Maurício Barbanti Duarte, Rafael Sá Leitão Barboza, Zilca Campos, Marcélia Basto da Silva, Sarah Mângia, Daniel J. Ingram, Juliano A. Bogoni   +17 more
wiley   +1 more source

Integrating multiple data sources to develop range and area of habitat maps tailored for local contexts

Diversity and Distributions, Volume 30, Issue 10, October 2024.
Abstract Aim Global species distribution maps tend to be limited to a reduced number of species or are too coarse to inform ecological research and conservation actions at local scales. We developed a workflow to generate species range and area of habitat (AOH) maps tailored to local contexts based on expert information, community science observations ...
Andres Felipe Suárez‐Castro, Orlando Acevedo‐Charry, Luis Hernando Romero Jiménez, Elkin A. Noguera‐Urbano, Fernando Ayerbe‐Quiñones, Natalia Ocampo‐Peñuela   +5 more
wiley   +1 more source

A photogrammetric approach for real‐time visual SLAM applied to an omnidirectional system

The Photogrammetric Record, Volume 39, Issue 187, Page 577-599, September 2024.
This study presents a real‐time vSLAM for omnidirectional systems, adapting ORB‐SLAM with a rigorous equisolid‐angle projection model. Analysing a 140 m trajectory, it shows fewer discrepancies using hyperhemispherical images, outperforming a generic model like EUCM. Accuracy started at sub‐0.12 m, reaching metre‐level at the end.
Thaisa Aline Correia Garcia, Antonio Maria Garcia Tommaselli, Letícia Ferrari Castanheiro, Mariana Batista Campos   +3 more
wiley   +1 more source

Improving Sentinel‐3 Altimetry Data With GPD+ Wet Tropospheric Corrections

Earth and Space Science, Volume 11, Issue 8, August 2024.
Abstract The provision of accurate wet tropospheric corrections (WTC), accounting for the delay of the radar pulses caused mostly by the atmospheric water vapor in the altimeter‐range observations, is pivotal for the full exploitation of altimeter‐derived surface heights.
M. J. Fernandes, T. Vieira, C. Lázaro, B. Vasconcellos, P. Aguiar   +4 more
wiley   +1 more source

Cálculo, mediante la aplicación del algoritmo de ajuste por mínimos cuadrados, de los componentes de velocidad para estaciones GNSS continuas

Uniciencia, 2014
El cálculo de la velocidad de una estación de observación continua GNSS representa un insumo fundamental en la geodesia moderna. El hecho de determinar la posición de las estaciones GNSS de forma diaria implica que se puedan establecer las series ...
Jorge Moya Zamora, Sara Bastos Gutiérrez, María Rivas Guzmán   +2 more
doaj   +2 more sources

Impact of the extreme 2015-2016 ENOS event on the geometry of the earth surface in the equatorial region of South America [PDF]

, 2020
El fenómeno del Niño-Oscilación del Sur (ENOS) es un fenómeno oceánico-atmosférico que se origina en las aguas ecuatoriales del Océano Pacífico. Existen dos fases, la fase cálida o El Niño y la fase fría o La Niña, y se refieren respectivamente a un ...
Brunini, Claudio Antonio, Carbonetti, Micaela Alejandra, Galván, Romina de los Ángeles, Gende, Mauricio Alfredo   +3 more
core   +3 more sources

Implementación del servicio de datos GPS de la Escuela de Topografía, Catastro y Geodesia

Uniciencia, 2010
En la Escuela de Topografía, Catastro y Geodesia (ETCG) se ha implementado el Servicio de Datos GPS (SDG), el cual es un dominio en Internet que ofrece a los diferentes usuarios el acceso a información técnica y la posibilidad de descargar los archivos ...
Jorge Moya Zamora
doaj   +2 more sources

Aportes al análisis y cálculo del ZTD en base a redes geodésicas y modelos atmosféricos: Assessment of ZTD derived from geodetic networks and atmospheric models [PDF]

, 2023
Cuando la señal GNSS atraviesa masas de vapor de agua (WV), la velocidad de propagación disminuye generando un retardo en el camino que recorre el pulso.
Euillades, Pablo, Mackern, María Virginia, Rosell, Patricia Alejandra   +2 more
core   +1 more source

GNSS APLICADO À GEODINÂMICA: ANALISE DO DESLOCAMENTO DAS PLACAS LITOSFÉFICAS DURANTE EVENTO SÍSMICO [PDF]

, 2015
Eventos sísmicos ou terremotos se manifestam por tremores e algumas vezes deslocamentos da crosta terrestre. A maioria dos terremotos ocorrem em regiões próximas as bordas das placas tectônicas.
AGUIAR, Claudinei Rodrigues de, GOBATTO, Débora Regiane, PADILHA, Ana Flávia   +2 more
core