Elfritzson M. Peralta

ORCID: 0000-0003-1942-026X
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About
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Research Areas
  • Freshwater macroinvertebrate diversity and ecology
  • Fish Ecology and Management Studies
  • Soil and Water Nutrient Dynamics
  • Water Quality and Pollution Assessment
  • Aquatic Invertebrate Ecology and Behavior
  • Flood Risk Assessment and Management
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Aquatic Ecosystems and Biodiversity
  • Marine Ecology and Invasive Species
  • Fish Biology and Ecology Studies
  • Diatoms and Algae Research
  • Water resources management and optimization
  • Land Use and Ecosystem Services
  • Urban Stormwater Management Solutions
  • Integrated Water Resources Management
  • Wastewater Treatment and Nitrogen Removal
  • Hydrology and Watershed Management Studies
  • Environmental DNA in Biodiversity Studies

University of Santo Tomas
2019-2024

Applied Natural Sciences
2019

In many countries of the Global South, aquatic ecosystems such as streams, rivers, lakes, and wetlands are severely impacted by several simultaneous environmental stressors, associated with accelerated urban development, extreme climate. However, this problem receives little attention. Applying a DPSIR approach (Drivers, Pressures, State, Impacts, Responses), we analyzed impacts their effects on hydrosystems (including stagnant waters), suggest possible solutions from series case studies...

10.3390/su11184975 article EN Sustainability 2019-09-11

Identifying nonpoint phosphorus (P) sources in a watershed is essential for addressing cultural eutrophication and proposing best-management solutions. The oxygen isotope ratio of phosphate (δ18OPO4) can shed light on P cycling ecosystems. This the first assessment δ18OPO4 distribution whole catchment, namely, Yasu River Watershed Japan. observed values river water varied spatially from 10.3‰ to 17.6‰. To identify watershed, we used an isoscape approach involving multiple-linear-regression...

10.1021/acs.est.8b05837 article EN Environmental Science & Technology 2019-04-02

Abstract Agriculture is one of the most critical anthropogenic disturbances to freshwater ecosystems globally. In monsoon Asia, rice paddies provide habitats for aquatic species, but how their associated irrigation systems can affect downstream poorly understood. Here, we used structural equation modeling (SEM) estimate seasonal variations in benthic macroinvertebrate diversity and environments quantified indirect effects land use, especially paddy areas, on through local environmental...

10.1002/ecs2.3468 article EN cc-by Ecosphere 2021-05-01

Unsustainable urbanization in the Indo-Pacific continues to threaten terrestrial and aquatic ecosystems due habitat disturbances driven by human pressures. The Marikina Watershed, one of most critical watersheds Philippines, has been exposed economic population growth resulting landscape modification water quality degradation. This led establishment Upper River Basin Protected Landscape (UMRBPL) rehabilitate watershed ecosystem. To strengthen this conservation initiative, we aimed assess...

10.2984/73.3.1 article EN Pacific Science 2019-07-01

The number of non-native fish species introduced into the Philippines has steadily increased over last decades, similar to other Southeast Asian countries. This trend introductions is high concern for conservation native aquatic biota country, as invasive fishes are known be responsible a wide range detrimental effects. In this study, 13 freshwater recently reported Ramsar-listed Lake Naujan (Province Oriental Mindoro) were screened their invasiveness risk under current and predicted climate...

10.31398/tpjf/31.2.2023-0083 article EN cc-by-nc The Philippine Journal of Fisheries 2024-12-01

A floristic study of the diatoms (Bacillariophyceae) along Marikina River in eastern part Metro Manila, Philippines, recorded at least 140 species belonging to 39 genera. Of these genera, one greatest number was observed genus Gomphonema (18species). These were identified and described under bright field light microscope.Some further scanning electron microscope. habitat description occurrence is given. Twelve (12) out 18species are new records for country: G. brasiliense subsp. pacificum...

10.56899/152.05.11 article EN The Philippine journal of science 2023-07-24
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