Spatiotemporal distribution of physicochemical parameters and toxic elements in Lake Pomacochas , Amazonas, Peru

Leiva-Tafur, Dámaris; Goñas, Malluri; Culqui, Lorenzo; Cruz, Carlos; Rascón, Jesús; Oliva‐Cruz, Manuel

doi:10.3389/fenvs.2022.885591

Cited by 9 publications

(6 citation statements)

References 60 publications

(60 reference statements)

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“…The levels of Chloride ions were measured to be 69.6 mg/l in the present study. The measured Cl− levels were higher than those in Manchar Lake [ 53 ] and other studies [ 8 , 52 ]. The most probable sources of Chloride ions in Mangla Lake may be the deposition of atmospheric pollutants, waste effluents, physical, biological, and chemical weathering of rocks, and agricultural runoff.…”

Section: Discussioncontrasting

confidence: 70%

“…This may be due to the change in inflow and temperature due to seasonal variations. Resultantly physicochemical parameters of the freshwater ecosystem influence the bioavailability of heavy metals in this way there was a correlation between physicochemical properties on the content of heavy metals in water, fish and birds as given in Table 4 [ 52 ]. As per Pearson Correlation coefficient the chloride ions and biological oxygen demand (BOD) were positively linked with pH for Pb and Cd in water.…”

Section: Discussionmentioning

confidence: 99%

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Elucidating the effects of heavy metals contamination on vital organ of fish and migratory birds found at fresh water ecosystem

Khan,

ullah,

Ashfaq

et al. 2023

Heliyon

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Section: Discussioncontrasting

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Elucidating the effects of heavy metals contamination on vital organ of fish and migratory birds found at fresh water ecosystem

Khan,

ullah,

Ashfaq

et al. 2023

Heliyon

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“…The climate is semi-humid and warm temperate (Yalta Meza et al 2014). There are two main seasons: the wet season (approximately November–April, with higher rainfall from January to March) and the dry season (approximately May–October, with lower rainfall from June to August; Rascón et al 2021, Leiva-Tafur et al 2022).…”

Section: Methodsmentioning

confidence: 99%

Mapping high-altitude peatlands to inform a landscape conservation strategy in the Andes of northern Peru

Curatola Fernández,

Makowski Giannoni,

Delgado Florián

et al. 2023

Envir. Conserv.

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Summary The wetlands of the jalca ecoregion in the Andes of northern Peru form peat and play a major role in the hydrological ecosystem services of the ecoregion. Although peat is globally valued for carbon sequestration and storage, peatlands have not yet been mapped in the jalca. In this region, the Gocta waterfall, one of the 20 highest waterfalls in the world, depends on the jalca’s wetlands ecosystem. The local population depends on tourism to the waterfall and is concerned about preserving its drainage area. To inform conservation planning, in this study we delimited the drainage area of the Gocta waterfall and identified land tenure by applying Geographic Information System (GIS), remote sensing and participatory mapping techniques. Then, by classifying optical, radar and digital elevation models data, we mapped peatland in the jalca of the Gocta drainage area with an overall accuracy of 97.1%. Our results will inform conservation strategy in this complex area of communal, private and informal land tenure systems. At a regional level, this appears to be the first attempt at mapping peatlands using remote sensing imagery in the jalca ecoregion, and it represents a milestone for future efforts to map and conserve peatlands in other tropical mountain areas of the world.

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“…The concentration of metals was determined following the method described by Leiva-Tafur et al (2022) and Guadalupe et al (2023) [24,53].…”

Section: Heavy Metal(oid)smentioning

confidence: 99%

Probabilistic Risk Assessment of Metals, Acrylamide and Ochratoxin A in Instant Coffee from Brazil, Colombia, Mexico and Peru

Guadalupe,

Grandez-Yoplac,

Arellanos

et al. 2024

Foods

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This study analysed the probabilistic risk to consumers associated with the presence of iAs, Cd, Cr, Hg, Pb, acrylamide (AA) and ochratoxin A (OTA) in instant coffee from Brazil, Colombia, Mexico and Peru. The results found iAs to be the metal with the highest concentrations (3.50 × 10−2 to 6.00 × 10−2 mg/kg), closely followed by Pb (1.70 × 10−2 to 2.70 × 10−2 mg/kg) and Cr (5.00 × 10−3 to 1.00 × 10−2 mg/kg), although these differences were not significant between countries. Cd and Hg were not detected. Focusing on AA, the concentrations ranged from 1.77 × 10−1 mg/kg (Peru) to 4.77 × 10−1 mg/kg (Brazil), while OTA ranged from 1.32 × 10−3 (Peru) to 1.77 × 10−3 mg/kg (Brazil) with significant differences between countries in both cases. As regards risk, the hazard quotient and hazard index were less than 1, meaning that the consumption of instant coffee represents a low level of concern for non-genotoxic effects. The results of the combination of margin of exposure and probability of exceedance indicated that the non-genotoxic effects of Pb, AA and OTA pose no threat. However, the probability values of suffering cancer from iAs and AA (between 1 × 10−6 and 1 × 10−4) indicated a moderate risk and that management measures should be taken.

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Spatiotemporal distribution of physicochemical parameters and toxic elements in Lake Pomacochas , Amazonas, Peru

Cited by 9 publications

References 60 publications

Elucidating the effects of heavy metals contamination on vital organ of fish and migratory birds found at fresh water ecosystem

Elucidating the effects of heavy metals contamination on vital organ of fish and migratory birds found at fresh water ecosystem

Mapping high-altitude peatlands to inform a landscape conservation strategy in the Andes of northern Peru

Probabilistic Risk Assessment of Metals, Acrylamide and Ochratoxin A in Instant Coffee from Brazil, Colombia, Mexico and Peru

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