María Belén Alfonso

ORCID: 0000-0003-0543-8098
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About
Contact & Profiles
Research Areas
  • Microplastics and Plastic Pollution
  • Recycling and Waste Management Techniques
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Marine and coastal ecosystems
  • biodegradable polymer synthesis and properties
  • Fish Ecology and Management Studies
  • Water Quality and Pollution Assessment
  • Freshwater macroinvertebrate diversity and ecology
  • Fish biology, ecology, and behavior
  • Land Use and Ecosystem Services
  • Hydrology and Watershed Management Studies
  • Diatoms and Algae Research
  • Social Sciences and Policies
  • Water Resource Management and Quality
  • Municipal Solid Waste Management
  • Soil and Water Nutrient Dynamics
  • Water Quality Monitoring and Analysis
  • Cephalopods and Marine Biology
  • Climate variability and models
  • Employment, Labor, and Gender Studies
  • Aging, Health, and Disability
  • Healthcare and Environmental Waste Management
  • Coastal and Marine Management
  • Marriage and Sexual Relationships
  • Soil erosion and sediment transport

Kyushu University
2021-2025

Chulalongkorn University
2025

National University of Comahue
2024

Consejo Nacional de Investigaciones Científicas y Técnicas
2014-2022

Universidad Nacional del Sur
2017-2022

Centro Científico Tecnológico - Bahía Blanca
2020-2022

Instituto Argentino de Radioastronomía
2017-2022

NOAA Oceanic and Atmospheric Research
2020

Abstract Ponds are often identified by their small size and shallow depths, but the lack of a universal evidence-based definition hampers science weakens legal protection. Here, we compile existing pond definitions, compare ecosystem metrics (e.g., metabolism, nutrient concentrations, gas fluxes) among ponds, wetlands, lakes, propose an definition. Compiled definitions mentioned surface area depth, were largely qualitative variable. Government legislation rarely defined despite commonly...

10.1038/s41598-022-14569-0 article EN cc-by Scientific Reports 2022-06-21

Microplastics (MP) were recognized as an emergent pollution problem due to their ubiquitous nature and bioaccumulative potential. Those present in salt for consumption could represent a human exposure route through dietary uptake. The current study, conducted Bangladesh, reports microplastics contamination coarse prepared consumption. Sea samples collected from eight representative pans located the country's largest farming area, Maheshkhali Channel, along Bay of Bengal. detected all...

10.1038/s41598-021-02457-y article EN cc-by Scientific Reports 2021-11-30

Southeast Asian countries are recognized as significant contributors to the discharge of abundant plastic waste into ocean. In this study, we conducted neuston net surveys on Si Chang Island Gulf Thailand, a coral reef conservation area, determine presence microplastic (MP) pollution. The survey, during wet (southwesterly monsoon), transition, and dry seasons (northeasterly revealed that MP abundance was in range 0.02–42.46 particles m−3. precipitation, wind, current direction induced by...

10.1016/j.scitotenv.2024.170787 article EN cc-by The Science of The Total Environment 2024-02-12

Digestion protocols are needed to determine microplastics abundance and features. This study assessed the organic matter (OM) digestion efficiency on plankton samples MPs' weight, size, polymer changes under different techniques. For this, 2-step (KOH H2O2 + Fe2+) 3-step (2-step enzymes) techniques were duration temperature conditions. The results obtained for OM with satisfactory. Weight registered polyethylene terephthalate (PET), polystyrene foam, polyvinyl chloride, polycarbonate...

10.1016/j.marpolbul.2021.113027 article EN cc-by Marine Pollution Bulletin 2021-10-07

Abstract Microplastic (MP) contamination in fish may occur via their feeding behavior and ingestion of contaminated prey. This study investigated the presence MPs predator Lutjanus russellii (Russell’s snapper) its prey along Chumphon coast Central Gulf Thailand. Stomach contents L . were analyzed to identify species. Prey species then sampled from same geographical area as specimens for subsequent MP analysis. The dietary habits classify it a generalist carnivore, consuming diverse range...

10.1007/s11356-025-36068-1 article EN cc-by Environmental Science and Pollution Research 2025-02-18

<title>Abstract</title> Saline lakes are hypersensitive to changes in their water balance and therefore show amplified responses climatic land-use catchment. However, despite the resulting, often dramatic ecological consequences, saline rank low on policy agendas as they assumed support few ecosystem services levels of biodiversity. Here, we challenge this view evaluate threatened species 84 distributed across globe. We found that harbour not only aquatic biota but also a diverse range...

10.21203/rs.3.rs-5835171/v1 preprint EN cc-by Research Square (Research Square) 2025-02-24

Understanding the drivers and how they affect ecosystem metabolism is essential for developing effective management policy plans. In this study, net production (NEP), respiration (R), gross primary (GPP) rates were estimated in relation to physicochemical, hydrological, meteorological variables La Salada (LS) Sauce Grande (SG), two shallow lakes located an important agricultural region with water management. LS a mesosaline, mesotrophic-eutrophic lake, whereas SG hyposaline eutrophic lake....

10.3390/w10091136 article EN Water 2018-08-25

Abstract This paper aims to guide the stakeholder engagement process related plastic pollution research in marine environments. We draw on advice identified during an online workshop (Ocean Plastic Workshop 2022) organized by Early Career Ocean Professionals (ECOPs) from 11 countries, held April 2022. International experts and participants discussed their experiences collaborative development implementation of ocean projects worldwide, guided three main questions: (i) What is role scientists...

10.1093/icesjms/fsad055 article EN cc-by ICES Journal of Marine Science 2023-04-07

Abstract The intensity and frequency of storms are projected to increase in many regions the world because climate change. Storms can alter environmental conditions ecosystems. In lakes reservoirs, reduce epilimnetic temperatures from wind‐induced mixing with colder hypolimnetic waters, direct precipitation lake's surface, watershed runoff. We analyzed 18 long‐term high‐frequency lake datasets 11 countries assess magnitude wind‐ vs. rainstorm‐induced changes temperature. found small...

10.1002/lno.11739 article EN cc-by Limnology and Oceanography 2021-04-07

Abstract In lakes, the rates of gross primary production (GPP), ecosystem respiration (R), and net (NEP) are often controlled by resource availability. Herein, we explore how catchment vs. within lake predictors metabolism compare using data from 16 lakes spanning 39°N to 64°N, a range inflowing streams, trophic status. For each lake, combined stream loads dissolved organic carbon (DOC), total nitrogen (TN), phosphorus (TP) with DOC, TN, TP concentrations high frequency in situ monitoring...

10.1002/lno.12449 article EN cc-by-nc Limnology and Oceanography 2023-11-08

La Salada is a shallow saline lake located in the SW of Pampas subject to significant water management, so primary objective was assess whether input and physicochemical parameters have an impact on plankton assemblages over two year period (2013-dry 2014-wet).The community structure variables showed substantial changes study period.La hosted characterized by low diversity small sized organisms.The nanoplanktonic fraction organisms (2-20 mm) dominate phytoplankton community.Ochromonas...

10.1051/limn/2017023 article EN Annales de Limnologie - International Journal of Limnology 2017-01-01

Microplastics could be ingested by many organisms, including zooplankton, involving bioaccumulation and biomagnification mechanisms a cross food webs. The information about microplastic ingestion zooplankton keeps increasing worldwide. However, it is still limited for particle sizes under 300 μm (small microplastics, SMPs) in areas such as Southeast Asia, which considered one of the hotspots plastic debris. This study aimed to characterize size, shape, polymer types SMPs copepod Centropages...

10.1016/j.scitotenv.2024.172837 article EN cc-by The Science of The Total Environment 2024-04-28
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