Towards integrated management of a shallow tropical lake: assessment of water quality, sediment geochemistry, and phytoplankton diversity in Lake Palakpakin, Philippines

Navarrete, Ian A.; Dicen, Gerald P.; Perez, Teresita R.; Mendoza, Shinelle M.; Rallos, Roland V.; Labides, John Leonard R.; Rivera, Clarissa T.; Hallare, Arnold V.; Claveria, Rene Juna R.

doi:10.1007/s10661-019-7617-7

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…Notably, cultural eutrophication is also influenced by sediment yield. In [20], it was cited that eutrophication is worsened by the absorption of phosphorus in sediments. The model also showed that sediment yield is more distinct around Sampaloc Lake and the outlet of the other lakes.…”

Section: Discussionmentioning

confidence: 99%

Modeling Diffuse Nutrient and Sediment Pollution affecting Lake Palakpakin, Laguna using QSWAT

Linato,

Sarte,

Peña

2023

Proceedings of the 9th World Congress on New Technologies

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Lake Palakpakin is vulnerable to nutrient and sediment pollution, leading to eutrophication and siltation. Despite existing studies identifying the pollutants and detecting their concentration within the lake, their sources were generally attributed to agricultural activities, considered a nonpoint source. This research modelled the diffuse sediment and nutrient pollution affecting Lake Palakpakin, San Pablo City, Laguna using Soil and Water Analysis Tool (SWAT). This model is physically based, requiring DEM, soil map, LULC map, slope map, and meteorological data as inputs to model physical processes associated with water movement, sediment movement, nutrient cycling, etc. Due to the unsatisfactory statistical results of the calibrated model caused by insufficient hydrological data, the uncalibrated simulation was used. It revealed that the critical source areas for NO3-N and PO4 are found in agricultural lands and areas that are underlain by clay and clay loam. Critical source areas were also found along the stream connecting Palakpakin lake to Laguna de Bay. Meanwhile, higher sediment yields were distinct around Sampaloc Lake and the outlet of the other lakes and in agricultural and urban areas. Moreover, the model exhibited that an increase in precipitation coincides with an increase in sediment, NO3-N and PO4 loading.

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Section: Discussionmentioning

confidence: 99%

Modeling Diffuse Nutrient and Sediment Pollution affecting Lake Palakpakin, Laguna using QSWAT

Linato,

Sarte,

Peña

2023

Proceedings of the 9th World Congress on New Technologies

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“…Banahaw-San Cristobal ( LLDA, 2014 ; Bannister et al, 2019 ; Aguilar et al, 2023 ), and they are located in the southern region of Luzon Island, Philippines ( Figure 1 ). These are categorized as small lakes (surface area ≤2,000,000 m 2 ) impacted by a tropical monsoon climate ( Brillo, 2016a , b ; Aguilar et al, 2023 ) and having variable trophic statuses based on Chlorophyll a ( Mendoza et al, 2019 ) and phytoplankton data ( Navarrete et al, 2019 ). A simultaneous study with Aguilar et al (2023) categorized the mixing patterns of the SMLs with Lakes Palakpakin, Bunot, Mohicap, Sampaloc, and Yambo being warm monomictic while the two deepest lakes Pandin and Calibato were categorized as meromictic.…”

Section: Methodsmentioning

confidence: 99%

The methane-oxidizing microbial communities of three maar lakes in tropical monsoon Asia

Bicaldo,

Padilla,

et al. 2024

Front. Microbiol.

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Methane-oxidizing bacteria (MOB) is a group of planktonic microorganisms that use methane as their primary source of cellular energy. For tropical lakes in monsoon Asia, there is currently a knowledge gap on MOB community diversity and the factors influencing their abundance. Herewith, we present a preliminary assessment of the MOB communities in three maar lakes in tropical monsoon Asia using Catalyzed Reporter Deposition, Fluorescence In-Situ Hybridization (CARD-FISH), 16S rRNA amplicon sequencing, and pmoA gene sequencing. Correlation analysis between MOB abundances and lakes’ physicochemical parameters following seasonal monsoon events were performed to explain observed spatial and temporal patterns in MOB diversity. The CARD-FISH analyses detected the three MOB types (I, II, and NC10) which aligned with the results from 16S rRNA amplicons and pmoA gene sequencing. Among community members based on 16S rRNA genes, Proteobacterial Type I MOB (e.g., Methylococcaceae and Methylomonadaceae), Proteobacterial Type II (Methylocystaceae), Verrucomicrobial (Methylacidiphilaceae), Methylomirabilota/NC10 (Methylomirabilaceae), and archaeal ANME-1a were found to be the dominant methane-oxidizers in three maar lakes. Analysis of microbial diversity and distribution revealed that the community compositions in Lake Yambo vary with the seasons and are more distinct during the stratified period. Temperature, DO, and pH were significantly and inversely linked with type I MOB and Methylomirabilota during stratification. Only MOB type I was influenced by monsoon changes. This research sought to establish a baseline for the diversity and ecology of planktonic MOB in tropical monsoon Asia to better comprehend their contribution to the CH4 cycle in tropical freshwater ecosystems.

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“…Most of the research on Philippine lakes focused on aquaculture and fisheries, pollution, and eutrophication. Only a few have been dedicated to freshwater lake ecology and biodiversity studies Aquino et al 2008;Papa and Mamaril 2011;Bannister et al 2019;Navarrete et al 2019). There is still a paucity of information available on the status of the Philippine lakes, except for Laguna de Bay, the country's largest lake (Guerrero 2001).…”

Section: Introductionmentioning

confidence: 99%

Limnology of Lake Wood: an Ancestral Lake of the Subanen Tribe

Baludo¹,

Papa²,

Magbanua³

2021

Philipp J Sci

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Relatively limited information exists on Lake Wood’s limnology and ecology, an ancestral lake of the Subanens. Here, we provide a limnological characterization of the lake – exploring its physical, chemical, and biological features. The data on lake morphometry were gathered using an echosounder; lower depth water samples were collected using a Niskin water sampler for physicochemical analyses while surface water samples were collected at five sampling sites for phosphate (PO4) analysis; and zooplankton samples were collected at several depths through vertical towing in March–April 2019. Lake Wood, located at 320 m above sea level, has an extensive surface area covering 7.38 km2 with a maximum depth of 85 m. Lake water comes from rainfall, small rivers, and groundwater and empties into the Dumanquilas Bay via its only outlet – the Biswangan River. Land use of the lake is predominantly cultivated land. Moreover, based on the trophic state index (TSI), the lake’s current trophic status is eutrophic. During the study periods, thermocline and oxycline formed at 15 m below the surface of the lake. We recorded three cladocerans (Ceriodaphnia cornuta, Diaphanosoma cf.sarsi, and Moina micrura) and one copepod species (Thermocyclops crassus) in the lake, all of which are common limnetic species found in the Philippines. Based on our findings, we recommend more efforts to manage and rehabilitate the lake to control and manage eutrophication’s negative impacts. Finally, our study contributes to understanding lakes in Mindanao that are less represented in Philippine freshwater research.

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Towards integrated management of a shallow tropical lake: assessment of water quality, sediment geochemistry, and phytoplankton diversity in Lake Palakpakin, Philippines

Cited by 5 publications

References 31 publications

Modeling Diffuse Nutrient and Sediment Pollution affecting Lake Palakpakin, Laguna using QSWAT

Modeling Diffuse Nutrient and Sediment Pollution affecting Lake Palakpakin, Laguna using QSWAT

The methane-oxidizing microbial communities of three maar lakes in tropical monsoon Asia

Limnology of Lake Wood: an Ancestral Lake of the Subanen Tribe

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