Water quality and weather trends preceding fish kill occurrences in Lake Taal (Luzon Is., Philippines) and recommendations on its long-term monitoring

Lake Taal is one of the most unique lake ecosystems in the world. The decline in the lake’s water quality together with other environmental and human-mediated factors has helped intensify the occurrences of massive fish kills in recent years. Available water quality data collected from areas devoted...

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Main Authors: Mendoza, Milette U, Dur, Gaël, Rosana, Maurita R, Santos, Mudjekeewis D, Mutia, Ma. Theresa M, Kawit, Nenita S, Ite, Michelle O, Villanueva, Leah S, Anneville, Orlane, Souissi, Sami, Papa, Rey Donne S
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Published: Archīum Ateneo 2019
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Online Access:https://archium.ateneo.edu/es-faculty-pubs/39
https://www.philsciletters.net/2019/PSL%202019-vol12-no02-p147-156-Papa%20et%20al.pdf
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Institution: Ateneo De Manila University
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spelling ph-ateneo-arc.es-faculty-pubs-10382020-05-14T07:37:08Z Water quality and weather trends preceding fish kill occurrences in Lake Taal (Luzon Is., Philippines) and recommendations on its long-term monitoring Mendoza, Milette U Dur, Gaël Rosana, Maurita R Santos, Mudjekeewis D Mutia, Ma. Theresa M Kawit, Nenita S Ite, Michelle O Villanueva, Leah S Anneville, Orlane Souissi, Sami Papa, Rey Donne S Lake Taal is one of the most unique lake ecosystems in the world. The decline in the lake’s water quality together with other environmental and human-mediated factors has helped intensify the occurrences of massive fish kills in recent years. Available water quality data collected from areas devoted to aquaculture, were analyzed together with available weather data to determine long-term changes as well as monitor probable water quality and weather trends preceding known fish kill occurrences. There was no observed spatial variability among data from different monitoring sites which means that fewer but more evenlyspaced monitoring stations are recommended for the lake. The lack of important parameters (i.e. primary production, nutrients, plankton and fish) as well as the limited measurement of physicochemical parameters in surface water have hampered a more in-depth analysis of the lake’s long-term limnological characteristics. Detected temporal variations in the water quality parameters are attributed to climate and human-induced factors. As to the dataset’s usefulness for fish kill monitoring, our analysis revealed trends preceding documented fish kill occurrences - such as increased wind speed and high temperatures one to three days preceding fish kill incidences - may be used as indicators of an impending fish kill. Links between strong wind speed and varying air temperatures to tropical lakes’ thermal and oxycline regime was discovered and recommended for further studies. Moreover, continuing lake monitoring is needed to strongly ascertain the cause of fish kill incidences and to ultimately increase the chances of anticipating massive fish kill events. 2019-01-01T08:00:00Z text https://archium.ateneo.edu/es-faculty-pubs/39 https://www.philsciletters.net/2019/PSL%202019-vol12-no02-p147-156-Papa%20et%20al.pdf Environmental Science Faculty Publications Archīum Ateneo aquaculture fish kill limnology long-term monitoring water quality Environmental Monitoring Environmental Sciences
institution Ateneo De Manila University
building Ateneo De Manila University Library
continent Asia
country Philippines
Philippines
content_provider Ateneo De Manila University Library
collection archium.Ateneo Institutional Repository
topic aquaculture
fish kill
limnology
long-term monitoring
water quality
Environmental Monitoring
Environmental Sciences
spellingShingle aquaculture
fish kill
limnology
long-term monitoring
water quality
Environmental Monitoring
Environmental Sciences
Mendoza, Milette U
Dur, Gaël
Rosana, Maurita R
Santos, Mudjekeewis D
Mutia, Ma. Theresa M
Kawit, Nenita S
Ite, Michelle O
Villanueva, Leah S
Anneville, Orlane
Souissi, Sami
Papa, Rey Donne S
Water quality and weather trends preceding fish kill occurrences in Lake Taal (Luzon Is., Philippines) and recommendations on its long-term monitoring
description Lake Taal is one of the most unique lake ecosystems in the world. The decline in the lake’s water quality together with other environmental and human-mediated factors has helped intensify the occurrences of massive fish kills in recent years. Available water quality data collected from areas devoted to aquaculture, were analyzed together with available weather data to determine long-term changes as well as monitor probable water quality and weather trends preceding known fish kill occurrences. There was no observed spatial variability among data from different monitoring sites which means that fewer but more evenlyspaced monitoring stations are recommended for the lake. The lack of important parameters (i.e. primary production, nutrients, plankton and fish) as well as the limited measurement of physicochemical parameters in surface water have hampered a more in-depth analysis of the lake’s long-term limnological characteristics. Detected temporal variations in the water quality parameters are attributed to climate and human-induced factors. As to the dataset’s usefulness for fish kill monitoring, our analysis revealed trends preceding documented fish kill occurrences - such as increased wind speed and high temperatures one to three days preceding fish kill incidences - may be used as indicators of an impending fish kill. Links between strong wind speed and varying air temperatures to tropical lakes’ thermal and oxycline regime was discovered and recommended for further studies. Moreover, continuing lake monitoring is needed to strongly ascertain the cause of fish kill incidences and to ultimately increase the chances of anticipating massive fish kill events.
format text
author Mendoza, Milette U
Dur, Gaël
Rosana, Maurita R
Santos, Mudjekeewis D
Mutia, Ma. Theresa M
Kawit, Nenita S
Ite, Michelle O
Villanueva, Leah S
Anneville, Orlane
Souissi, Sami
Papa, Rey Donne S
author_facet Mendoza, Milette U
Dur, Gaël
Rosana, Maurita R
Santos, Mudjekeewis D
Mutia, Ma. Theresa M
Kawit, Nenita S
Ite, Michelle O
Villanueva, Leah S
Anneville, Orlane
Souissi, Sami
Papa, Rey Donne S
author_sort Mendoza, Milette U
title Water quality and weather trends preceding fish kill occurrences in Lake Taal (Luzon Is., Philippines) and recommendations on its long-term monitoring
title_short Water quality and weather trends preceding fish kill occurrences in Lake Taal (Luzon Is., Philippines) and recommendations on its long-term monitoring
title_full Water quality and weather trends preceding fish kill occurrences in Lake Taal (Luzon Is., Philippines) and recommendations on its long-term monitoring
title_fullStr Water quality and weather trends preceding fish kill occurrences in Lake Taal (Luzon Is., Philippines) and recommendations on its long-term monitoring
title_full_unstemmed Water quality and weather trends preceding fish kill occurrences in Lake Taal (Luzon Is., Philippines) and recommendations on its long-term monitoring
title_sort water quality and weather trends preceding fish kill occurrences in lake taal (luzon is., philippines) and recommendations on its long-term monitoring
publisher Archīum Ateneo
publishDate 2019
url https://archium.ateneo.edu/es-faculty-pubs/39
https://www.philsciletters.net/2019/PSL%202019-vol12-no02-p147-156-Papa%20et%20al.pdf
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