Ricardo Figueroa
A5069166582- Freshwater macroinvertebrate diversity and ecology
- Aquatic Invertebrate Ecology and Behavior
- Fish Ecology and Management Studies
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Hydrology and Watershed Management Studies
- Water Quality and Pollution Assessment
- Soil and Water Nutrient Dynamics
- Environmental and Cultural Studies in Latin America and Beyond
- Invertebrate Taxonomy and Ecology
- Water resources management and optimization
- Hydrology and Sediment Transport Processes
- Aquatic Ecosystems and Phytoplankton Dynamics
- Environmental Toxicology and Ecotoxicology
- Mollusks and Parasites Studies
- Peatlands and Wetlands Ecology
- Fish biology, ecology, and behavior
- Ecology and biodiversity studies
- Marine and fisheries research
- Water Governance and Infrastructure
- Marine and coastal ecosystems
- Nuclear Structure and Function
- Conservation, Biodiversity, and Resource Management
- Land Use and Ecosystem Services
- RNA Research and Splicing
University of Concepción
2015-2025
Université de Lorraine
2019
Laboratoire Animal et Agroécosystèmes
2019
Agriaquaculture Nutritional Genomic Center
2018
University of Chile
2018
Stockholm University
2009-2017
University of San Carlos of Guatemala
2016-2017
Södertörn University
2007-2010
Centro de Estudios Científicos
2010
United Nations Economic Commission for Latin America and the Caribbean
2009
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...
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...
Abstract Climate change and human pressures are changing the global distribution extent of intermittent rivers ephemeral streams (IRES), which comprise half river network area. IRES characterized by periods flow cessation, during channel substrates accumulate undergo physico‐chemical changes (preconditioning), resumption, when these rewetted release pulses dissolved nutrients organic matter (OM). However, there no estimates amounts quality leached substances, nor is information on underlying...
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...
Abstract Intermittent rivers and ephemeral streams (IRES) may represent over half the global stream network, but their contribution to respiration carbon dioxide (CO 2 ) emissions is largely undetermined. In particular, little known about variability drivers of in IRES sediments upon rewetting, which could result large pulses CO . We present a study examining from 200 dry reaches spanning multiple biomes. Results standardized assays show that mean increased 32‐fold 66‐fold sediment...
INTRODUCCIÓNEl creciente interés por conocer y proteger los ecosistemas fluviales estudiar sus cambios en el tiempo, ha estimulado las últimas décadas desarrollo de criterios biológicos que permitan estimar efecto intervenciones humanas ellos (Norris & Hawkins 2000).Dentro indicadores más utilizados la evaluación del mundo, Macroinvertebrados bentónicos como calidad agua
Here, we characterize a transmembrane protein of the nuclear envelope that name spindle-associated membrane 1 (Samp1). The is conserved in metazoa and fission yeast homologous to Net5 rat Ima1 Schizosaccharomyces pombe. We show that, human cells, membrane-spanning polypeptide with an apparent molecular mass 43 kDa. This consistent predicted 392 amino acids has five segments its C-terminus exposed nucleoplasm. During interphase, Samp1 was specifically distributed inner membrane....
Summary 1. Similar constraints in distant, but climatically comparable, regions may be expected to yield biotic assemblages with similar attributes. Environmental factors that constrain communities at smaller scales, however, different between regions. Thus, patterns observed large scales differ from those detected small and international comparisons should focussed multiple scales. 2. Mediterranean‐climate (MCRs) are characterized by remarkable seasonal variability precipitation...
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...
Modifying cell-penetrating peptides (CPPs) with fatty acids has long been used to improve peptide-mediated nucleic acid delivery. In this study we have revisited phenomenon a systematic approach where developed structure–activity relationship describe the role of acyl chain length in transfection process. For that took well-studied CPP, PepFect14, as basis and varied its N-terminal from 2 22 carbons. To evaluate delivery efficiency, were noncovalently complexed splice-correcting...
Understanding and analyzing low river flows are some of key tasks effective water management, particularly in Chile’s Mediterranean regions, where irregular rainfall distribution leads to drought scarcity. This study aims assess low-flow trends the four major Chilean basins (Maipo, Rapel, Maule, Biobío) by calculating three hydrological indices: mean annual minimum maximum (MAM), base flow index (BFI), standardized precipitation (SPI), using data from 18 hydrometric stations. The indicators...
El uso de macroinvertebrados bentónicos como indicadores biológicos es larga tradición en los países desarrollados y son incorporados todas las evaluaciones calidad ecológica sistemas fluviales.En América Latina estos estudios menos frecuentes normativas para la protección recursos acuáticos recién comienzan a elaborarse, el caso Chile, dejando abierta posibilidad al criterios biológicos.El presente estudio realiza una adaptación índices bióticos (IBE, BMWP, IBF SIGNAL) que aplicados...
Gold mining is one of the major problems contamination hydric resources in Colombia, this practice generates a high impact on water quality due to accumulation waste during its process. In study was evaluated five natural stream beds corresponding four streams with gold operations and Cauca River, taking samples before inlet after outlet each operation Dios Te Dé, Tamboral, Piedra Imán, Lorenzo affected by artisanal labor, which drain into Salvajina Reservoir River municipality Suárez Cauca,...
Most water bodies are currently used as receptors for pollutants coming mainly from the industrial and domestic sectors. The Biobío river is subjected to multiple anthropogenic pressures such supply, drinking water, hydroelectric power generation, agriculture, final receptor body of a large amount urban waste, that will intensify due decrease in flow result climate change. In this context, organic contamination has been found sewage discharges oxidizable waste generated by processes. sense,...
Chile is currently facing a mega-drought, which expected to lead significant increase in the water stress level. Social conflicts related use are linked effects of climate change and governance system marked by privatization natural resources public interest. This study aims analyze whether current Chilean scheme can adapt through critical observation role River Vigilance Committees (RVCs; private user organizations exercising function management), from perspective Ostrom’s design principles...
More than half of the world's rivers dry up periodically, but our understanding biological communities in riverbeds remains limited. Specifically, roles dispersal, environmental filtering and biotic interactions driving biodiversity are poorly understood. Here, we conduct a large-scale coordinated survey patterns drivers riverbeds. We focus on eight major taxa, including microorganisms, invertebrates plants: Algae, Archaea, Bacteria, Fungi, Protozoa, Arthropods, Nematodes Streptophyta. use...