A5028869745- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal ecosystems
- Water Quality and Pollution Assessment
- Fish Ecology and Management Studies
- Fish biology, ecology, and behavior
- Hydrology and Watershed Management Studies
- Flood Risk Assessment and Management
- Marine Biology and Ecology Research
- Constructed Wetlands for Wastewater Treatment
- Water Quality Monitoring Technologies
- Coastal wetland ecosystem dynamics
- Aquatic Ecosystems and Biodiversity
- Microbial Community Ecology and Physiology
- Geography and Environmental Studies
- Oceanographic and Atmospheric Processes
- Diatoms and Algae Research
- Isotope Analysis in Ecology
- Growth and nutrition in plants
- Fish Biology and Ecology Studies
- Water Quality Monitoring and Analysis
- Soil erosion and sediment transport
- Wastewater Treatment and Nitrogen Removal
- Hydrological Forecasting Using AI
- Banana Cultivation and Research
- Anaerobic Digestion and Biogas Production
Universidade Federal do Rio Grande do Sul
2015-2024
Universidade de Brasília
2023
Universidade Federal do Rio Grande
2017-2023
Institut de Recherche pour le Développement
2018-2022
UMR Espace-Dev
2018
Altera (United States)
2013
Instituto de Pesquisas Tecnológicas
2012
Simula Research Laboratory
2012
Pontifícia Universidade Católica do Rio Grande do Sul
2006
Imperial College London
1988-1990
Vomeronasal chemoreceptors segregated within the vomeronasal organ are important for male hamster sexual behavior. An autonomically controlled vascular pump, previously demonstrated in anesthetized animals, can transport stimuli to receptors. Interruption of efferent nerves controlling pump results behavioral deficits similar those produced by interruption afferent carrying information from brain. Pump activation is thus a prerequisite normal stimulation behaving animals.
Inland waters, just as the world's oceans, play an important role in global carbon cycle. While lakes and reservoirs typically emit CO 2 , they also bury their sediment. The net emission is largely result of decomposition or preservation terrestrially supplied carbon. What regulates balance between burial not known, but climate change temperature have been hypothesized to influence both processes. We analyzed patterns dioxide partial pressure ( p ) 83 shallow over a large climatic gradient...
A Global Lake Ecological Observatory Network (GLEON; www.gleon.org) has formed to provide a coordinated response the need for scientific understanding of lake processes, utilising technological advances available from autonomous sensors. The organisation embraces grassroots approach engage researchers varying disciplines, sites spanning geographic and ecological gradients, novel sensor cyberinfrastructure synthesise high-frequency data at scales ranging local global. platform rigorously...
Remote estimation of chlorophyll-a in turbid and productive estuaries is difficult due to the optical complexity Case 2 waters. Although recent advances have been obtained with use empirical approaches for estimating these environments, understanding relationship between spectral reflectance based mainly on temperate subtropical estuarine systems. The potential apply standard NIR-Red models tropical remains underexplored. Therefore, purpose this study evaluate performance several...
A positive feedback between submerged vegetation and water clarity forms the backbone of alternative state theory in shallow lakes. The clearing effect aquatic may be caused by different physical, chemical, biological mechanisms has been studied mainly temperate Recent work suggests differences biotic interactions (sub)tropical cooler lakes might result a less pronounced (sub)tropics. To assess whether changes with climate, we sampled 83 over gradient ranging from tundra to tropics South...
Water temperature regulates many processes in lakes; therefore, evaluating it is essential to understand its ecological status and functioning, comprehend the impact of climate change. Although few studies assessed accuracy individual sensors estimating lake-surface-water (LSWT), comparative analysis considering different still needed. This study evaluated performance two thermal sensors, MODIS Landsat 7 ETM+, used methods estimate SWT a large subtropical lake. products MOD11 LST MOD28 SST...
The effects of climate change on lake surface water temperature (LSWT) have been well documented in the northern hemisphere but are less understood south, particularly shallow lakes. Here we investigated warming rates three large lakes southern Brazil using a comprehensive 60 year meteorological data set and 20 LSWT time series derived from MODIS. Our findings reveal substantial consistent regional concentrated spring (0.5 °C dec–1) and, to lesser extent, summer (mean trend 0.3 annual trends...
Taim Hydrological System is a unique subtropical wetland in southern Brazil harboring an exceptional biological diversity. In 1978, ecological reserve was established to protect part of this area from increasing anthropogenic impacts its surroundings. Fishes have been poorly investigated system. Based on multi-gear sampling study encompassing several years (2001-2005), and comparisons with previous fish inventories, we provide up-to-date species list fishes occurring the Wetland. addition,...
Abstract Flooding dynamics across a medium‐size (Janauaca Lake, 786 km 2 ) floodplain system along the Amazon/Solimoes River over 9‐year period (2006–2015) is studied through integration of remote sensing and limited in situ data hydrologic‐hydrodynamic modelling based on Telemac‐2D model. Model accuracy varies hydrological year. We focus seasonal interannual spatial variability water circulation inundation duration. highlight strong heterogeneities velocity magnitude between different...
In the Amazon basin, floodplains form a complex mosaic of freshwater systems with differing morphologies, resulting in varied inundation patterns and heterogeneous chemical ecological characteristics. this study, we focused on Janauacá floodplain, medium-sized system (786 km2, including local watershed) located along Solimões River. Based situ satellite observations acquired from November 2006 to 2011, computed water fluxes between mainstream floodplain examined temporal dynamics storage...
The processes in tropical floodplain lakes enable maintaining phytoplankton nutrient requirements over a hydrological year. nutrients such as nitrogen, phosphorus and carbon compounds play an essential role growth. However, the way that interact how this relationship varies seasonally freshwater ecosystems is not clear. In study, we evaluate between phytoplankton–nutrients cycle Amazonian verify if influences biomass of cyanobacteria. We also check what factors linked to act structuring...