Characteristics of the winter growth of detached Elodea nuttallii (Planch.) St. John in Japan

Kunii, Hidenobu

doi:10.1016/0304-3770(81)90046-2

Cited by 26 publications

(20 citation statements)

References 2 publications

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“…The maximum growth of this species was in May and June during bloom . Kunii (1981) found that this plant can grow during winter when the daily mean water temperature is higher than 4 ° C .…”

Section: Elodea Nuttalliimentioning

confidence: 99%

Seasonal and long-term changes in surface cover of aquatic plants in a shallow pond, Ojaga-ike, Chiba, Japan

Kunii

Maeda

1982

Hydrobiologia

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Seasonal and long-term changes in surface cover of aquatic plants in a shallow pond, Abstract Seasonal changes in surface cover and long-term floral changes in aquatic plants of a shallow eutrophic pond, Ojaga-ike, as well as the phenology of each species, were studied . Out of ten floating-leaved and submerged plants, the following five species showed a change in surface cover during 1978 : Potamogeton crispus and Elodea nuttallii occupied 53 .5% of the total pond surface in May, Trapa natans and Nelumbo nucifera 79 .1% in July, N. nucifera and Hydrilla verticillata 62 .0% in September and N. nucifera 41 .2% in November . In addition to dramatic seasonal changes in surface cover, long-term floral changes occurred in this pond from 1971 onwards . While Nymphoides indica, Myriophyllum spicatum and H. verticillata decreased in number and in distribution ranges between 1971 and 1978, two newly established plants, N. nucifera and E. nuttallii, have now become dominant . The alteration in dominance may be due to water level fluctuations and interspecific competition for light . Seasonal changes in water quality during the study period are also summarized .

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Section: Elodea Nuttalliimentioning

confidence: 99%

Seasonal and long-term changes in surface cover of aquatic plants in a shallow pond, Ojaga-ike, Chiba, Japan

Kunii

Maeda

1982

Hydrobiologia

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“…Since then, its explosive growth has been reported repeatedly (Kunii 1984a;Kurita and Minemura 1985a,b;Hayakawa 1986;Nagasaka et al 2002). The competitive advantage of E. nuttallii over native species has been explained by its high shade tolerance (Ikusima 1967), by its active growth in low water temperatures (Kunii 1981(Kunii , 1982, and by its high dispersal ability (Kunii 1984a,b). The plant is one of the most common invasive submerged plants in lakes, ponds, rivers, and channels in Japan, where the trophic conditions vary from oligotrophy to eutrophy (Kadono 1994).…”

Section: Introductionmentioning

confidence: 96%

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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“…Multivariate analysis shows that the key factor for the developing of final biomass of E. nuttallii was the temperature in winter and early spring and also the level of exposure to main water flow. Indeed, higher temperature of the water in winter and spring is important for the more intense biomass development of E. nuttallii as it has already been reported (Kunii, 1981;Hamabata, 1997;Rooney and Kalff, 2000). Hamabata (1997) discovered that a mild winter with a minimum monthly temperature above 8 xC favoured the growth of overwintering plants of E. nuttallii from which new shoots are produced vegetatively in temperate regions.…”

Section: Discussionmentioning

confidence: 91%

Influence of abiotic factors on invasive behaviour of alien speciesElodea nuttalliiin the Drava River (Slovenia)

Grudnik

Jelenko

Germ

2013

Ann. Limnol. - Int. J. Lim.

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-The alien and potentially invasive species Elodea nuttallii was observed for the first time in Slovenia's Drava River in 2007, when its huge biomasses were observed at some locations. Changes in biomass of submerged macrophyte communities and abiotic factors such as water temperature, discharge and level were monitored at two impoundments of the Drava River (2009, 2010 and 2011). The correlations between abiotic factors and developed final biomass were assessed to determine if the level of abiotic factors has an impact on the final biomass and invasive behaviour of E. nuttallii. The results obtained showed that biomass of E. nuttallii was not excessive in 2009 and 2010, while in the year 2011 it developed huge biomass at locations, which were not directly exposed to the main water current. The biomass of Myriophyllum spicatum was also higher in 2011 in comparison with 2009 and 2010 but not in such high degree. The key factor for the development of the final biomass of E. nuttallii was the water temperatures in winter and spring and also the point at which water temperatures in spring surpassed 10 xC. The invasive behaviour of E. nuttallii is expected in the years with higher temperatures in January and March and at the locations which are not directly exposed to the main water current. We assume that continuation of the deposition of silt in the impoundments of the Drava River could contribute to invasive behaviour of species E. nuttallii in the years with mild winters and warmer springs.

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Characteristics of the winter growth of detached Elodea nuttallii (Planch.) St. John in Japan

Cited by 26 publications

References 2 publications

Seasonal and long-term changes in surface cover of aquatic plants in a shallow pond, Ojaga-ike, Chiba, Japan

Seasonal and long-term changes in surface cover of aquatic plants in a shallow pond, Ojaga-ike, Chiba, Japan

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

Influence of abiotic factors on invasive behaviour of alien speciesElodea nuttalliiin the Drava River (Slovenia)

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