Application of Carlson's trophic state index to Japanese lakes and relationships between the index and other parameters

Aizaki, Morihiro; Otsuki, Akira; Fukushima, Takehiko; Hosomi, Masaaki; Muraoka, Kohji

doi:10.1080/03680770.1980.11897067

Cited by 87 publications

(93 citation statements)

References 6 publications

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“…Therefore, the different proportion of particle-attached bacteria between the two lakes might be influenced by the difference in phytoplankton cells or particulate matters as a microhabitat of attached bacteria. In general, the direct and plate counts in the water of Lakes Phewa, Begnas, and Rupa were comparable to those reported in the water of many eutrophic lakes (Coveney et al, 1977;Aizaki et al, 1981;Konda, 1982), but their counts were considerably lower than those in the water of some Japanese hypertrophic ponds (Konda, 1982(Konda, , 1984. The bacterial data in the present study support a diagnosis of trophic status (meso-eutrophic or eutrophic) of these lakes on the basis of data on total nitrogen, total phosphorus, and chlorophyll-a concentrations after Nakanishi et al (1988).…”

Section: Resultssupporting

confidence: 60%

Bacterial Numbers and Floras in the Water and Sediment of Subtropical Lakes Phewa, Begnas and Rupa in Nepal

Konda

Nakanishi

Sako

et al. 1988

Bulletin of Japanese Society of Microbial Ecology

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Bacterial numbers and floras in the water and sediment of subtropical Lakes Phewa, Begnas, and Rupa in the Pokhara Valley, Nepal, were surveyed in late monsoon season. In the water column at the deepest part of Lakes Phewa, Begnas, and Rupa, total bacteria estimated by the acridine orange direct count (AODC) method changed in the range of 11-2.4X106, 1.7-2.4X106, and 3.2-3.5X106 cells/ml, respectively, and heterotrophic bacteria estimated by the spread plate method changed in the range of 2.5-18X103, 2.0-4.0X103, and 6.9-14X103 CFU (colony-forming units)/ml, respectively. The distribution pattern of free-living and attached heterotrophic bacteria, size-fractionated with a 3.0 um Nuclepore filter, throughout the water column differed among the three lakes. The total and heterotrophic bacteria in the water at inlet were in the orders of 104-105 cells/ml and 103 CFU/ml, respectively, and those in the water at outlet showed a similar number to those in the surface water at each deepest part. The number of heterotrophic bacteria in the sediment at the deepest part was not different among the lakes and in the range of 5.9-8.9X105 CFU/cm3 of wet sediment. All of 178 isolates purified from the three lakes, 64 from the water and 114 from the sediment, were identified to generic level. Only 20% of bacteria isolated from the water were purified, and most of those isolates belonged to Pseudomonas, Flavobacterium, and coryneforms. On the other hand, the bacterial floras in the sediment of the three lakes were dominated by Bacillus.

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Section: Resultssupporting

confidence: 60%

Bacterial Numbers and Floras in the Water and Sediment of Subtropical Lakes Phewa, Begnas and Rupa in Nepal

Konda

Nakanishi

Sako

et al. 1988

Bulletin of Japanese Society of Microbial Ecology

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“…and the Raphidophyceae, C. marina (in preparation). A strong positive statistical relationship between bacterial abundance and chlorophyll a has been reported for fresh and marine waters (Aizaki et al, 1981;Bird and Kalff, 1984). In Maizuru Bay genus Vibrio was not detected in phytoplankton blooms period.…”

Section: Resultsmentioning

confidence: 92%

Annual Fluctuations of Phytoplankton and Bacterial Communities in Maizuru Bay and their Interrelationship

Riquelme

Fukami

Ishida

1987

Bulletin of Japanese Society of Microbial Ecology

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The annual changes in bacterial community were studied as related to those of phytoplankton in Maizuru Bay, Japan from May 1985 to April 1986 Five phytoplankton blooms were observed through the year Dominant algal species for three blooms were diatoms, Cerataulina pelagica, Asterionella japonica and Leptocylindrus danicus, and for the other two, dinoflagellate Prorocentrum micans and Raphidophycean Chattonella marina, respectively. The analysis of the bacterial community revealed that in these blooming periods the diversity of bacterial flora decreased. In particular the bacteria of genus Vibrio were not found in the bloom of phytoplankton A positive correlation was found between abundance of free-living bacteria and chlorophyll a concentrations. The results suggest that phytoplankton in the blooming period influences the bacterial flora and the bacterial concentration is closely related to the abundance of phytoplankton.

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“…Therefore, there are few aquatic plants in the shallow regions (5 m depth ). Aizaki et al (1981) ranked this lake as an oligotrophic lake with the modified Carlson s trophic state index (TSI) based on chlorophyll-a, total phosphorus and transparency.…”

Section: Introductionmentioning

confidence: 99%

Chironomid midges (Diptera: Chironomidae) emerged from bottom sediments in the deep lake, Lake Sai, Japan

Hirabayashi

Yoshizawa

et al. 2011

Jap. J. Sanit. Zool.

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Abstract:The chironomid fauna in the deep lake, Lake Sai, Japan, was investigated in March, 2009. Thirteen (8 males and 5 females) chironomid midges were collected with a sweeping net around the boat house and 81 (44 males and 37 females) chironomid midges emerged in the laboratory. They were identified as 11 species belonging to four subfamilies, i.e., 7 species of Chironominae, 1 species of Orthocladiinae, 1 species of Prodiamesinae and 2 species of Tanypodinae. At the deepest Station 4 (65.5 m in depth), we could not collect chironomid midges. However, only Micropsectra chuzeprima Sasa, 1984 was collected at Station 5 (56.6 m). At Stations 6 (29.6 m) and 3 (18.8 m), two species, M. chuzeprima and Procladius choreus (Meigen, 1804), were collected. On the other hand, at the shallowest Station 1 (4.9 m), we collected nine chironomid species, and the most numerous species in this collection was Polypedilum nubeculosum (Meigen, 1804) with a total of 41 individuals collected. In previous reports, a total of 16 species were collected from around the lake. We additionally describe 10 species from Lake Sai in this study. Only one species, P. nubeculosum, was common to the earlier report and the present study. As a result, there are 26 species recorded from Lake Sai.

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Application of Carlson's trophic state index to Japanese lakes and relationships between the index and other parameters

Cited by 87 publications

References 6 publications

Bacterial Numbers and Floras in the Water and Sediment of Subtropical Lakes Phewa, Begnas and Rupa in Nepal

Bacterial Numbers and Floras in the Water and Sediment of Subtropical Lakes Phewa, Begnas and Rupa in Nepal

Annual Fluctuations of Phytoplankton and Bacterial Communities in Maizuru Bay and their Interrelationship

Chironomid midges (Diptera: Chironomidae) emerged from bottom sediments in the deep lake, Lake Sai, Japan

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