32 Result(s)
within
Jorge E. Marcovecchio
-
Article
Relationship between silica and silicophytoliths with heavy metals in a wheat (Triticum aestivum) planted with silicon fertilization
Plants can absorb Si from the soil solution to produce biomineralizations, known as silicophytoliths (SiP), which could help to mitigate abiotic stresses, including improved tolerance to heavy metals (HM). The...
-
Article
Rapid determination of total metals: synergic effect of ultrasound energy and ionic liquids on the digestion of sediment samples
The aim of this study was to develop a new and rapid sample digestion procedure for metal extraction using ultrasonic energy together with a combination of an ionic liquid and mineral acids as extractants.
-
Article
Plastic Impacts in Argentina: a Critical Research Review Contributing to the Global Knowledge
Plastic pollution research has experienced exponential growth in the last decade; however, Argentina concentrates more than 70% of their research in the last 4 years. This review compiles regional research on ...
-
Article
Distribution of Butyltin Compounds in the Coastal Environment of the Bahía Blanca Estuary, Argentina
This study evaluates for the first time the distribution and accumulation of butyltin compounds (BTs) in different compartments such as seawater, sediments, suspended particulate matter (SPM), and mussels (Brachi...
-
Chapter
Bahía Blanca Estuary: A Chemical Oceanographic Approach
The dynamics, relationships, and equilibrium of estuaries can be significantly disturbed as a result of natural processes or human interventions that generate modifications (from circumstantial to structural) ...
-
Chapter
Estuarine Environmental Monitoring Programs: Long-Term Studies
Monitoring programs are evaluation procedures designed to assess the state and evolution of a system over time. In particular, environmental monitoring programs are those that are applied to assess the conditi...
-
Chapter
Negro River Environmental Assessment
The Negro River comprises a multi compartmentalized environment which links Los Andes mountains with the Atlantic Ocean. Due to its relevance in terms of industries, intensive agriculture production and popula...
-
Article
First approaches to the depuration process of trace metals in the burrowing crab Neohelice granulata from a temperate wetland in South America: Bahía Blanca estuary, Argentina
Trace metal contamination is among the major concerns of stakeholders due to its potential adverse effects on biota and humans, even at low concentrations. Few studies have recently focused on the ability of o...
-
Article
Spatial Distribution and Ecological Risk Assessment of Residual Organochlorine Pesticides (OCPs) in South American Marine Environments
Organochlorine pesticides (OCPs) have been intensely used and produced in South America. Although they were banned before the year 2000 (excepting endosulfan, which has been recently banned in several countrie...
-
Article
The influence of human activities on Pampean streams catchment: a biogeochemical approach
Pampean streams constitute a drainage network which discharges continental freshwater into the associated marine coastal zone. The present study concerned a set of streams within General Pueyrredón district, S...
-
Article
Evidence of Microplastic Ingestion by Fish from the Bahía Blanca Estuary in Argentina, South America
The aim of this study was to assess – for the first time – the occurrence and distribution of microplastics (MPs) in the gastrointestinal tracts (GITs) of a marine commercial fish species (Micropogonias furnieri)...
-
Article
Spatiotemporal distribution of organotin compounds in the coastal water of the Bahía Blanca estuary (Argentina)
Several areas within the Bahía Blanca estuary (BBE), with different maritime traffic intensity, were studied in order to confirm the presence and assess the distribution of tributyltin (TBT), dibutyltin (DBT),...
-
Article
Preliminary studies about the role of physicochemical parameters on the organotin compound dynamic in a South American estuary (Bahía Blanca, Argentina)
This work provides a preliminary study of the destination, mobility, and availability of tributyltin (TBT), dibutyltin (DBT), and monobutyltin (MBT) in contaminated sediments and water column within Puerto Ros...
-
Article
Assessment of chitin variation in seston of a temperate estuary (Bahía Blanca, Argentina)
Chitin was quantified in seston samples to determine its seasonal and spatial distribution in the estuary of Bahia Blanca. Sampling was conducted at three sites: Puerto Cuatreros, Maldonado, and Canal Vieja in...
-
Article
Influence of human-induced pressures on dissolved and particulate metal concentrations in a South American estuary
Coastal areas are urbanized and industrialized environments, affected by dredging operations, discharges of untreated municipal wastewaters, and farming. Develo** countries are in continuous growth and will ...
-
Article
Fast and Feasible Ultrasound-Assisted Pretreatment for the Determination of Organotin Compounds in Environmental Samples
The goal of this study was to improve an already established reference method, such as the one devoted to organotin compounds determination (Reference Method for Marine Pollution Studies, No. 59, UNEP). The pr...
-
Article
Distribution and human health risk assessment of PAHs in four fish species from a SW Atlantic estuary
The aim of this study is to assess—for the first time—the concentration of the 16 polycyclic aromatic hydrocarbons (PAHs) in the muscle tissues of four fish species (Micropogonias furnieri, Cynoscion guatucupa, R...
-
Article
Polycyclic Aromatic Hydrocarbons in Mussels from a South American Estuary
Bivalves, especially mussels, have been pointed as putative species to monitor polycyclic aromatic hydrocarbons (PAHs) in marine environment. After several environmental PAHs baseline reports, the present stud...
-
Article
Phenological Changes of Blooming Diatoms Promoted by Compound Bottom-Up and Top-Down Controls
Understanding phytoplankton species-specific responses to multiple biotic and abiotic stressors is fundamental to assess phenological and structural shifts at the community level. Here, we present the case of Tha...
-
Article
Distribution and behavior of zinc in estuarine environments: an overview on Bahía Blanca estuary (Argentina)
Zinc concentrations and distribution have been fully studied within Bahía Blanca estuary, an area which is strongly influenced by urban and industrial stress. Not only metal dissolved in estuarine water were m...
