Habitat and growth of aquatic macrophytes in lake Oze-numa during ice-free season.

Ohmori, Takehiro; Ikusima, Isao

doi:10.3739/rikusui.49.279

Cited by 5 publications

(4 citation statements)

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“…Rørslett et al (1986) reported that the duration of vigorous growth of E. canadensis in Norwegian lakes seemed to relate to the size of the sediment nutrient pool. Elodea nuttallii tends to grow densely in muddy lake bottoms (Ohmori and Ikusima 1988;Hamabata 1991), from which the plant could take up sufficient nutrients. Hamabata (1996) suggested, based on observations in Lake Biwa, that the vigorous growth of E. nuttallii causes nutrient depletion in lake sediments.…”

Section: Introductionmentioning

confidence: 99%

Changes in biomass and spatial distribution of Elodea nuttallii (Planch.) St. John, an invasive submerged plant, in oligomesotrophic Lake Kizaki from 1999 to 2002

Nagasaka

2004

Limnology

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Distribution of pure Elodea nuttallii vegetation was surveyed from 1999 to 2002, immediately after the most recent expansion of the species in Lake Kizaki, Japan. During 2001 and 2002, areas of E. nuttallii vegetation rapidly diminished and the summer plant height decreased wherever the vegetation remained. The organic matter content, total phosphorus, and extracted P of the sediment from the vegetation bed were measured. A linear relationship was observed between the extracted P in the sediment and the biomass. The extracted P significantly decreased in the shallow littoral vegetation bed, where the biomass clearly diminished. A fertilization experiment using the shallow littoral sediment collected in the vegetation bed was conducted in 2001. In this experiment, apical shoots of E. nuttallii were planted in pots with fertilized sediment (nitrogen, phosphorus, and potassium additions). The growth of E. nuttallii shoots was significantly enhanced by enrichment with phosphorus alone. The ecological implication of sediment phosphorus limitation is discussed in relation to the cause of decline in the E. nuttallii population in Lake Kizaki.

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Section: Introductionmentioning

confidence: 99%

Changes in biomass and spatial distribution of Elodea nuttallii (Planch.) St. John, an invasive submerged plant, in oligomesotrophic Lake Kizaki from 1999 to 2002

Nagasaka

2004

Limnology

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“…These species, being alien to Japan, persist as vegetative green shoots during winter and start to grow earlier in spring than native submerged plants. They have predominated in the deep waters of many Japanese lakes, ponds and rivers (e.g., IKUSIMA, 1982 ;OHMORI and IKUSIMA, 1988). Their early start and long period of growth should account for their successful invasion and dominance in spite of their slow growth rates.…”

Section: Discussionmentioning

confidence: 99%

Relationship between Net Photosynthetic Rate and Leaf Life Span of Six Submerged Plants in Experimental Ponds.

Yamamoto¹,

Tsuchiya²,

Ikusima³

1999

Jpn. J. Limnol.

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Net photosynthetic rate and leaf life span were measured in six submerged plants, Potamogeton crispus L., P. malaianus Miq., Cabomba caroliniana A. Gray, Hydrilla verticillata (L. f.) Royle, Egeria densa Planch., and Elodea nuttallii (Planch.) St. John, growing in a nutrient-rich experimental pond. A negative correlation between net photosynthetic rate and leaf life span is observed among submerged and floating-leaved plant species as well as for trees among diverse terrestrial ecosystems. Differences in net photosynthetic rate and leaf life span of the submerged plants should be related to differences in the light condition of habitats and life history strategy.

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“…In the early stages of invasion in Japan, Elodea nuttallii seems to have replaced almost all of the native species by its explosive growth (Ikusima and Kabaya 1965;Kurita and Minemura 1985b;Ohmori and Ikusima 1988). In the northern basin of Lake Biwa, however, over three decades have passed since Elodea nuttallii was first introduced, and the distribution of submerged plants is arranged according to the grain size of the substratum, which was determined by the strength of wave action and by the water depth (Hamabata 1991(Hamabata , 1996Imamoto et al 1998).…”

Section: Figmentioning

confidence: 98%

Temporal changes and vertical distribution of macrophytes in Lake Kawaguchi

et al. 2002

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The distribution of macrophytes in Lake Kawaguchi, Japan, was surveyed in August 1999 using a sampling anchor from a boat. The survey revealed that the present aquatic vegetation was composed of 17 submerged species, and no floating-leaved plants were present. The diversity of submerged plants and their vertical growth limits decreased progressively from the west to the east end of the lake. At the time of the survey, the dominant species was Elodea nuttallii (Planch.) St. John, which had once grown explosively in the mid-1980s in the lake, and except for Vallisneria asiatica Miki, all of the species commonly observed in the lake seem to have diminished their growth greatly. Among them, Potamogeton compressus L., which was the most dominant species in the lake before the invasion of Elodea nuttallii, had decreased most severely. It is suggested that the present state of aquatic vegetation in this lake was much influenced by the persistent growth of Elodea nuttallii as well as by environmental factors.

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Habitat and growth of aquatic macrophytes in lake Oze-numa during ice-free season.

Cited by 5 publications

References 0 publications

Changes in biomass and spatial distribution of Elodea nuttallii (Planch.) St. John, an invasive submerged plant, in oligomesotrophic Lake Kizaki from 1999 to 2002

Changes in biomass and spatial distribution of Elodea nuttallii (Planch.) St. John, an invasive submerged plant, in oligomesotrophic Lake Kizaki from 1999 to 2002

Relationship between Net Photosynthetic Rate and Leaf Life Span of Six Submerged Plants in Experimental Ponds.

Temporal changes and vertical distribution of macrophytes in Lake Kawaguchi

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