Effects of low nitrogen-phosphorus ratios in the phytoplankton community in Laguna de Bay, a shallow eutrophic lake in the Philippines

Cuvin-Aralar, Maria Lourdes A.; Focken, Ulfert; Becker, Klaus; Aralar, Emiliano V.

doi:10.1023/b:aeco.0000035174.35091.0b

Cited by 24 publications

(15 citation statements)

References 17 publications

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“…S. costatum, at a proportion as high as 62.3%, dominated the community in the low N/P ratio treatment, while there were several species existing as co-dominants in the other treatments. Thus, shifts in community structure from several co-dominants to only one or two dominants due to competitive advantage brought about by the changes in nutrient loading may result in the decline of H′ (Cuvin-Aralar et al, 2004). The higher H′ in the low N/P treatments during the late phase of test (4N:1P on day 8 and 1N:1P on day 12) could also be explained by this theory.…”

Section: Discussionmentioning

confidence: 90%

“…The difference of nutrient storage ability and growth potential among different species is thought to be a key factor affecting the phytoplankton ecological strategies and competition statuses in the community (Anderson et al, 1991;Li et al, 2011). Many studies have shown that diatoms such as S. costatum have faster growth rates and are so-called r-strategists (Carter et al, 2005;Cuvin-Aralar et al, 2004;Li et al, 2003). These genera are successful groups of phytoplankton under non-limiting nutrient conditions in the early phase of succession (Egge, 1998).…”

Section: Discussionmentioning

confidence: 99%

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Responses in growth and succession of the phytoplankton community to different N/P ratios near Dongtou Island in the East China Sea

Huang

Zhu

Zeng

et al. 2012

Journal of Experimental Marine Biology and Ecology

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Responses in growth and succession of the phytoplankton community to different N/P ratios near Dongtou Island in the East China Sea

Huang

Zhu

Zeng

et al. 2012

Journal of Experimental Marine Biology and Ecology

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“…Phytoplankton species such as Oscillatoria sp., M. aeruginosa, Coelastrum sp., S. quadricauda, C. meneghiniana, euglenoids not only observed in the West zone of Xinkai Lake but also in the lake Santa Olalla (López-Archilla et al 2004). It has been reported that Microcystis and Oscillatoria cyanobacteria were the most abundant forms, the green alga Scenedesmus and the diatom Cyclotella dominated in the shallow eutrophic lake Laguna de Bay (Cuvin-Aralar et al 2004).…”

Section: Resultsmentioning

confidence: 99%

Seasonal Dynamics of Phytoplankton in Relation to Key Aquatic Habitat Factors in a Polluted Urban Small Water Body in Tianjin, China

Sun

Jin²,

Zhang

et al. 2009

Bull Environ Contam Toxicol

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To evaluate the seasonal dynamics of phytoplankton and its relationships with aquatic habitat factors in polluted urban landscape lakes, annual investigations have been carried out in the West zone of Xinkai Lake. The results showed that the lake belongs to the eutrophic-supertrophic type in terms of key habitat factors measurement. The seasonal succession of phytoplankton community was determined. The dominant cyanobacterial species Oscillatoria tenuis Ag. bloomed in autumn, although the other species with higher degrees of dominance never bloomed in the year investigated. Significant correlations between some habitat factors and phytoplankton biomass were observed.

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“…Hudon and Bourget (1983) found species of Cocconeis and Gomphonema in the lower stratum of the communities they studied. Fragilaria and Nitzschia were not as tolerant of low P or Si levels as Gomphonema and Cocconeis (Cymbola et al 2008, Cuvin-Aralar 2004. The growth habits of these 4 diatoms (GFCN) are quite different from each other, with Gomphonema, growing on a mucilage stalk that can rise above adnate diatoms such as Cocconeis.…”

Section: Location Of Epiphyte Genera Within a Matmentioning

confidence: 99%

Diatom responses to microenvironment structure within metaphyton mats

Saunders

Kilham

Verb

2016

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Microscale conditions within metaphyton mats affected the distribution of diatom genera. We investigated the conditions within layers of floating filamentous algal mats and changes in diatom genera over 57 days using microprobes every 2, 4, and 6 cm down through mats held in floating nets. Mats were then collected, frozen, and sliced into 2 cm layers for analysis. Filamentous algae and their diatom epiphytes were identified, counted, and analyzed for nitrogen, phosphorus, carbon, silicon, ash-free dry mass (AFDM), and chlorophyll a. Light intensity, temperature, dissolved oxygen, dry mass, and AFDM all fell significantly with increasing depth in the mat. Diatom coverage per filament was calculated as an epiphyte area index (EAI) and was significantly higher at the edge versus the center of the mat. The uppermost 2 cm layer showed the greatest downward trend in EAI over the sampling period. The densities of Gomphonema, Cocconeis, and Fragilaria were significantly positively correlated with lower light intensity and lower layers of the mat. Cymbella/Encyonema density was significantly correlated with higher light intensity. Gomphonema, Cocconeis, and Nitzschia were positively correlated with filaments with higher chlorophyll a content. Achnanthidium, Cymbella/Encyonema, and Nitzschia required higher levels of silicon. Diatoms with different growth habits responded similarly to measured variables. Stalk-forming Gomphonema and adnate Cocconeis both occurred in lower light areas and grew well under low nitrogen and phosphorus conditions.

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Effects of low nitrogen-phosphorus ratios in the phytoplankton community in Laguna de Bay, a shallow eutrophic lake in the Philippines

Cited by 24 publications

References 17 publications

Responses in growth and succession of the phytoplankton community to different N/P ratios near Dongtou Island in the East China Sea

Responses in growth and succession of the phytoplankton community to different N/P ratios near Dongtou Island in the East China Sea

Seasonal Dynamics of Phytoplankton in Relation to Key Aquatic Habitat Factors in a Polluted Urban Small Water Body in Tianjin, China

Diatom responses to microenvironment structure within metaphyton mats

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