A5089876760- Microbial Community Ecology and Physiology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal ecosystems
- Wastewater Treatment and Nitrogen Removal
- Fish Ecology and Management Studies
- Hydrology and Watershed Management Studies
- Constructed Wetlands for Wastewater Treatment
- Peatlands and Wetlands Ecology
- Aquatic Ecosystems and Biodiversity
- Zoonotic diseases and public health
- Plant responses to elevated CO2
- Mycorrhizal Fungi and Plant Interactions
- Sustainable Agricultural Systems Analysis
- Species Distribution and Climate Change
- COVID-19 Pandemic Impacts
- Yersinia bacterium, plague, ectoparasites research
- Atmospheric chemistry and aerosols
- Coastal wetland ecosystem dynamics
- Essential Oils and Antimicrobial Activity
- Thermochemical Biomass Conversion Processes
- Soil and Water Nutrient Dynamics
- Biofuel production and bioconversion
- Plant and soil sciences
- Chromium effects and bioremediation
- Hymenoptera taxonomy and phylogeny
University of California, Santa Cruz
2025
Universidad Técnica del Norte
2018-2023
Universidad de La Frontera
2021
Servicio Regional de Investigación y Desarrollo Agroalimentario
2019
Florida Gulf Coast University
2012-2014
CorpoGen (Colombia)
2013
Universitat de Barcelona
2000-2007
Universitat Ramon Llull
2006
Universidad de la República de Uruguay
2004
We performed a transplant experiment in eutrophic Sau reservoir to assess the factors that control bacterial abundance, activity, growth rate, and community composition. Samples from lacustrine riverine ends of were incubated dialysis bags placed situ transplanted other side also after 1 µm filtration measure predator effects. The sampled at 12‐h intervals estimate whole activity structure (by flow cytometry), phylogenetic composition hybridization with group‐specific probes). Bacterial...
Abstract Low dissolved oxygen concentration in bottom layers of lakes and reservoirs usually indicates low water quality. In lakes, empirical models predicting anoxia are almost entirely based on the decay plankton biomass, while recent findings suggest a prominent role streamflow load organic carbon. This suggests potential link between quality climate processes affecting streamflow. Here we support this hypothesis presenting evidence that both interannual variability change, mainly...
A Gram-negative, spiral-shaped, chemolithotrophic, ammonia-oxidizing bacterium, designated APG3 T , was isolated into pure culture from sandy lake sediment collected Green Lake, Seattle, WA, USA. Phylogenetic analyses based on the 16S rRNA gene sequence showed that strain belongs to cluster 0 of genus Nitrosospira which is presently not represented by described species, with multiformis (cluster 3) as closest species a validly published name (identity 98.6 % type strain). Strain grew at 4 °C...
Abstract Increasing anthropogenic emissions of nitrogen (N) and carbon (C) are major threats to ecosystems globally. Although atmospheric N deposition is likely affecting cycling community composition in California's serpentine ecosystems, a historical record inputs vegetation has yet be reconstructed for these nutrient‐limited biodiversity hotspots. For leather oak ( Quercus durata var. durata), foundational, serpentine‐endemic species, we investigated leaf C isotopic (δ 15 δ 13 C) %N...
Abstract Lake Rodó (Montevideo, Uruguay) is a small, urban, hypertrophic lake undergoing restoration. In this study, we evaluated the nutrient removal efficiency and water quality improvement attributable to recirculation system, consisting of three connected pools converted artificial wetlands dominated by free‐floating hydrophytes. Eichhornia crassipes Spirodela intermedia hydrophyte community during summer winter, respectively, with biomass production being maintained throughout year. The...
Summary 1. Epilimnetic alkaline phosphatase activity (APA) was measured in longitudinal profiles of the canyon‐shaped, eutrophic Sau Reservoir (Catalonia, Spain) during autumn, winter and spring periods 1997–2000. 2. The spatial pattern APA depended on lake circulation. During stable stratification, when ratio mixed to euphotic depth ( z mix / eu < 1.7) low Chlorophyll a (Chl ) concentration high, also comparatively high (0.5–3.4 μ mol L −1 h located mostly >2‐ m size‐fraction....
Residual biomass from guava (Psidium guajava L.), a common and widespread fruit tree native to Latin America, has been analyzed in the present research order determine quality its potential use for energy purposes. Obtained was grinded compacted into form of fuel briquettes. Determinations solid biofuel parameters, i.e., physical, mechanical chemical properties such as calorific value, moisture, ash content, volatile matter, durability, contents main elements heavy metals were performed...
ABSTRACT Bacteria in the genus Nitrosospira play vital roles nitrogen cycle. sp. strain APG3 is a psychrotolerant betaproteobacterial ammonia-oxidizing bacterium isolated from freshwater lake sediment. The draft genome revealed that it represents new species of cluster 0 , which presently not represented by described species.
Understanding the biodegradation potential of river bacterioplankton communities is crucial for watershed management. We investigated shifts in metabolic profiles along salinity gradient Caloosahatchee River Estuary, Florida. The carbon source utilization patterns were determined by using Biolog EcoPlates. number utilized substrates was generally high upstream freshwater dominated zone and low downstream zone, suggesting a shift among assemblages estuarine gradient. prokaryotic cell numbers...
We studied the planktonic food web in eutrophic Sau Reservoir (Catalonia, NE Spain). Along longitudinal axis from Ter River downstream to dam, we characterized a microbial succession of dominance bacteria-HNF-ciliates. The transports large load organic material into reservoir, with bacterial density ∼9 · 106 cells per ml. While at first lacustrine station HNF were dominant consumers, others, an oligotrich ciliate, Halteria grandinella, was main protozoan bacterivore. Most production...
We studied the planktonic food web in eutrophic Sau Reservoir (Catalonia, NE Spain). Along longitudinal axis from Ter River downstream to dam, we characterized a microbial succession of dominance bacteria-HNF-ciliates. The transports large load organic material into reservoir, with bacterial density ∼9 · 106 cells per ml. While at first lacustrine station HNF were dominant consumers, others, an oligotrich ciliate, Halteria grandinella, was main protozoan bacterivore. Most production...
Abstract BACKGROUND The Asian chestnut gall wasp (ACGW) Dryocosmus kuriphilus Yasumatsu is the most severe pest of genus Castanea worldwide. After its arrival in Europe, insect dispersed rapidly from Italy to other European countries, as well spreading over long distances within each country because unintentional transport infested material owing fact that infestation inside dormant buds visually undetectable. Hot water treatment (HWT) has been tested terms and diseases control propagation...
There is a growing trend toward the use of renewable sources to produce clean energy and mitigate effects climate change. Second-generation lignocellulose biomasses, such as agro-residues, comprise potential source byproduct agriculture. Ecuador has optimal conditions that allow for cultivation different types crops. This makes agriculture relevant economic activity in country; however, residues obtained from have not been investigated establishment bioenergy industry. study evaluated three...
Muchas de las grandes ciudades España utilizan para el abastecimiento agua potable la proveniente embalses. En unos pocos casos se trata embalses expresamente construidos esta finalidad y en otros ha ido priorizando este uso por encima los que fueron especialmente diseñados. Aunque todos tema cantidad es importante, cada vez cobre mayor protagonismo calidad del almacenan. trabajo pasa revista a técnicas gestión con vistas mejorar suministran aplicado al sistema Sau – Susqueda río Ter Baells,...
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