José Francisco Gonçalves
A5088781120- Freshwater macroinvertebrate diversity and ecology
- Fish Ecology and Management Studies
- Fish biology, ecology, and behavior
- Hydrology and Sediment Transport Processes
- Environmental and biological studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Water Quality and Pollution Assessment
- Soil and Water Nutrient Dynamics
- Species Distribution and Climate Change
- Soil erosion and sediment transport
- Hydrology and Watershed Management Studies
- Wildlife-Road Interactions and Conservation
- Marine Biology and Ecology Research
- Aquatic Invertebrate Ecology and Behavior
- Geography and Environmental Studies
- Ecology and Vegetation Dynamics Studies
- Environmental DNA in Biodiversity Studies
- Fish Biology and Ecology Studies
- Forest Ecology and Biodiversity Studies
- Heavy metals in environment
- Fire effects on ecosystems
- Parasite Biology and Host Interactions
- Soil Management and Crop Yield
- Geochemistry and Elemental Analysis
- Marine and coastal ecosystems
Universidade de Brasília
2016-2025
National Institute of Amazonian Research
2024
Laboratoire de Dynamique des Fluides
2022
Universidade Federal de Minas Gerais
2004-2015
Infineon Technologies (Germany)
2014
Universidade Federal do Rio de Janeiro
1999-2004
Universidade Federal de Pernambuco
1992
Ecology Letters (2011) 14: 289–294 Abstract The decomposition of plant litter is one the most important ecosystem processes in biosphere and particularly sensitive to climate warming. Aquatic ecosystems are well suited studying warming effects on because otherwise confounding influence moisture constant. By using a latitudinal temperature gradient an unprecedented global experiment streams, we found that will likely hasten microbial produce equivalent decline detritivore-mediated rates. As...
Plant litter breakdown is a key ecological process in terrestrial and freshwater ecosystems. Streams rivers, particular, contribute substantially to global carbon fluxes. However, there little information available on the relative roles of different drivers plant fresh waters, particularly at large scales. We present global-scale study streams compare biotic, climatic other environmental factors rates. conducted an experiment 24 encompassing latitudes from 47.8° N 42.8° S, using mixtures...
An experiment in >1000 river and riparian sites found spatial patterns controls of carbon processing at the global scale.
Most hypotheses explaining the general gradient of higher diversity toward equator are implicit or explicit about greater species packing in tropics. However, global patterns within guilds, including trophic guilds (i.e., groups organisms that use similar food resources), poorly known. We explored a key guild stream ecosystems, detritivore shredders. This was motivated by fundamental ecological role shredders as decomposers leaf litter and some records pointing to low shredder abundance...
ABSTRACT Aim We tested the hypothesis that shredder detritivores, a key trophic guild in stream ecosystems, are more diverse at higher latitudes, which has important ecological implications face of potential biodiversity losses expected as result climate change. also explored dependence local diversity on regional species pool across and examined influence environmental factors diversity. Location World‐wide (156 sites from 17 regions located all inhabited continents latitudes ranging 67° N...
Riparian plant litter is a major energy source for forested streams across the world and its decomposition has repercussions on nutrient cycling, food webs ecosystem functioning. However, we know little about dynamics in tropical streams, even though tropics occupy 40% of Earth's land surface. Here investigated spatial temporal (along year cycle) patterns inputs storage multiple three biomes Brazil (Atlantic forest, Amazon forest Cerrado savanna), predicting differences among relation to...
Abstract The relationship between detritivore diversity and decomposition can provide information on how biogeochemical cycles are affected by ongoing rates of extinction, but such evidence has come mostly from local studies microcosm experiments. We conducted a globally distributed experiment (38 streams across 23 countries in 6 continents) using standardised methods to test the hypothesis that enhances litter streams, establish role other characteristics assemblages (abundance, biomass...
Running waters contribute substantially to global carbon fluxes through decomposition of terrestrial plant litter by aquatic microorganisms and detritivores. Diversity this may influence instream globally in ways that are not yet understood. We investigated latitudinal differences mixtures low high functional diversity 40 streams on 6 continents spanning 113° latitude. Despite important variability our dataset, we found the effect decomposition, which explained as evolutionary adaptations...
Summary 1. To assess whether the reported slow breakdown of litter in tropical Cerrado streams is due to local environmental conditions or intrinsic leaf characteristics plant species, we compared leaves from Protium brasiliense , a riparian species (Brazilian savannah), and temperate stream. The experiment was carried out at time highest fall two locations. An additional summer conducted stream provide for similar temperature conditions. 2. rates ( k ) P. ranged 0.0001 0.0008 day −1 are...
The objectives of our study were to assess leaf-litter breakdown in 3 streams climates and determine the contributions associated microbial invertebrate communities process. We incubated leaves Alnus glutinosa 1 stream each climate zones: temperate (mountains Central Portugal), Mediterranean (South tropical Cerrado (Minas Gerais, Brazil). Leaf-litter rates (/d) faster (k = 0.023–0.017) than 0.014) or 0.014–0.009) streams. (/degree day) also higher 0.0018–0.0032) similar between other 2...
Many forested headwater streams are heterotrophic ecosystems in which allochthonous inputs of plant litter a major source energy. Leaves riparian vegetation entering the stream broken down by combination biotic and abiotic processes and, most temperate boreal streams, provide food habitat for dense populations detritivorous invertebrates. However, tropical different parts world show substantial variability number diversity leaf-shredding detritivores (hereafter detritivores). We used data...
Plant litter represents a major basal resource in streams, where its decomposition is partly regulated by traits. Litter-trait variation may determine the latitudinal gradient which mainly microbial tropics and detritivore-mediated at high latitudes. However, this hypothesis remains untested, as we lack information on large-scale trait for riparian litter. Variation cannot easily be inferred from existing leaf-trait databases, since nutrient resorption can cause traits of green leaves to...
Rivers and streams contribute to global carbon cycling by decomposing immense quantities of terrestrial plant matter. However, decomposition rates are highly variable large-scale patterns drivers this process remain poorly understood. Using a cellulose-based assay reflect the primary constituent detritus, we generated predictive model (81% variance explained) for cellulose across 514 globally distributed streams. A large number variables were important predicting decomposition, highlighting...
The objectives of this study were to investigate leaf breakdown in two reaches different magnitudes, one a 3rd (closed riparian vegetation) order and the other 4th (open order, tropical stream assess colonization invertebrates microorganisms during processing detritus. We observed that detritus reach decomposed 2.4 times faster than which, we nitrate concentration water velocity greater. This showed chemical composition does not appear be important evaluating breakdown. However, it was shown...
The relationship between leaf breakdown and colonisation by invertebrates in tropical aquatic ecosystems is poorly understood, especially regard to the added problem of potential effects exotic species. To assess during a third-order headwater stream south-eastern Brazil, we conducted an experiment using native species Miconia chartacea, Eucalyptus grandis artificial leaves. We hypothesised that quality detritus shape influence invertebrate because food refuge offered detritus. Invertebrate...
Urbanization alters water physical and chemical variables may affect leaf-litter breakdown in streams. Higher temperature nutrient inputs urban streams can stimulate microbial biomass, which increase rates over nonurban On the other hand, urbanization reduce by eliminating shredders. We evaluated physical, chemical, biological factors that directly indirectly of Coussapoa trinervia Mabea speciosa 42 Central Amazonia. used structural equation modeling to assess whether: 1) shredder activity...
Interactions between terrestrial and aquatic systems influence the structure of river habitats and, consequently, affect their benthic macroinvertebrate composition. The aim this study was to evaluate effects spatial environmental variables (local physical chemical water regional landscape characteristics) on community Pandeiros River Basin. Biotic abiotic were evaluated at 20 sampling sites distributed across primary sub-basins We found that macroinvertebrates primarily affected by...
The objective was to assess the effects of natural variation in physical structure environment on biological communities and processing Eucalyptus cloeziana Inga laurina identify controlling factors at different scales along stream order gradients. study area consisted 14 sampling sites distributed within a tropical watershed (1st, 2nd, 3rd 4th streams replicated 4 sub-basins). Our samples 3 g leaves E. (high-quality) I. (low-quality) placed 252 bags with 10mm mesh (measured by chemical...
Complex environmental issues require solutions that cannot be achieved without integrating scientific disciplines and communicating science to people, decision-makers stakeholders. Nevertheless, although Alexander von Humboldt gifted us with an approach integrate knowledge across aiming broadly understand issues, our current practice largely ignores holistic approach. Here, we develop a conceptual framework for sustaining mountain integrity securing their ecosystem services based on...