Continuous growth and clump maintenance of Potamogeton crispus L. in Narutoh River, Japan

Kunii, Hidenobu

doi:10.1016/0304-3770(89)90017-x

Cited by 29 publications

(17 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, concentrations of TNC in Potamogeton crispus L. (curlyleaf pondweed) turions have been reported as high as 40 percent TNC (Kunii 1989), and in tubers of Vallisneria americana Michx. (wildcelery), to 48 percent (Titus and Adams 1979).…”

Section: Starchmentioning

confidence: 99%

Allocation of Biomass and Carbohydrates in Waterhyacinth (Eichhornia crassipes): Pond-Scale Verification.

Madsen¹,

Luu²,

Getsinger³

1993

View full text Add to dashboard Cite

Section: Starchmentioning

confidence: 99%

Allocation of Biomass and Carbohydrates in Waterhyacinth (Eichhornia crassipes): Pond-Scale Verification.

Madsen¹,

Luu²,

Getsinger³

1993

View full text Add to dashboard Cite

“…The changes in net growth are probably mainly caused by changes in macrophyte growth. Decreased plant growth and plant senescence has been shown to coincide with lower water temperature and shorter day-length in autumn causing lower macrophyte production (Madsen & Adams 1988;Kunii 1989;Davis & McDonell 1997;Champion & Tanner 2000). Since day-length and water temperature are closely inter-correlated, it is difficult to separate the effects of these two factors.…”

Section: Seasonality Of Vegetation In Stable Streamsmentioning

confidence: 99%

Seasonal changes in macrophyte biomass in South Island lowland streams, New Zealand

Riis

Biggs

Flanagan

2003

New Zealand Journal of Marine and Freshwater Research

View full text Add to dashboard Cite

Seasonality in stream macrophyte biomass can have a profound effect on the flood risk in stream reaches as hydraulic resistance of macrophytes increases with increasing biomass. We studied the seasonality in total macrophyte biomass, and of eight common plant species, in eight streams over 1 year in the South Island, New Zealand. Biomass was generally highest in summer and lowest in winter, with biomass in winter being 40% less than the annual mean and 50% higher in summer. The season of maximum biomass varied among the eight species studied. Ranunculus trichophyllus and Veronica anagallis-aquatica were most abundant only in summer; Elodea canadensis, Myriophyllum triphyllum, Rorippa nasturtium-aquaticum, Potamogeton cheesemanii, and Potamogeton crispus were most abundant in summer or autumn, whereas Lagarosiphon major did not show any seasonal variations. These results can help predict the season of highest flood risk in South Island streams based on the predominant species in a stream reach, and thus when the most efficient time for weed cutting might be.

show abstract

“…This species is an important primary producer in freshwater ecosystems, providing food for herbivorous fish and waterfowl. Differing from most aquatic species, P. crispus flowers and produces turions almost simultaneously from late May to late October when water temperature is higher than 20°C and the photoperiod is longer than 12 h (Sastroutomo, 1981;Kunii, 1989). The turions begin to germinate in autumn and live through the winter.…”

Section: Introductionmentioning

confidence: 99%

Effects of sediment anoxia and light on turion germination and early growth of Potamogeton crispus

Cheng

Liang

et al. 2009

Hydrobiologia

View full text Add to dashboard Cite

Potamogeton crispus is a cosmopolitan aquatic species and is widely used as a pioneer species for vegetation restoration of eutrophic lakes. However, many restoration projects applying P. crispus turions have not been successful. Earlier studies focused on effects of light and temperature on turion germination. The purpose of this study was to determine whether sediment anoxia and light interactively affected the turion germination and early growth of P. crispus. Anoxic conditions in the experiment were produced by adding sucrose to the sediment. The germination rate of the turions was 68-73% lower in the highly anoxic condition treatment than in the control. Medium light intensity (10% of natural light at the water surface) was more favorable for germination under slightly anoxic conditions than either low or high light intensity. The growth of newly-formed sprouts was also significantly inhibited by sediment anoxia. Photosynthesis and shoot biomass were reduced under sediment anoxia, whereas total chlorophyll content, root biomass, and soluble protein content were highest in the low anoxic condition treatment. Medium light improved net photosynthesis and biomass production of the sprouts. We conclude that turion germination and sprout growth can be significantly inhibited by sediment anoxia. Medium light intensity may alleviate this inhibition by anoxia, but light has little effect when sediment anoxia is severe. For the purposes of vegetation restoration, more attention should be paid to the role of sediment anoxia, and it is necessary to improve sediment and light conditions for turion germination and early growth of P. crispus in eutrophic lakes. These results will contribute to a more complete understanding of turion germination dynamics of P. crispus and will be useful for future restoration programs.

show abstract

Continuous growth and clump maintenance of Potamogeton crispus L. in Narutoh River, Japan

Cited by 29 publications

References 12 publications

Allocation of Biomass and Carbohydrates in Waterhyacinth (Eichhornia crassipes): Pond-Scale Verification.

Allocation of Biomass and Carbohydrates in Waterhyacinth (Eichhornia crassipes): Pond-Scale Verification.

Seasonal changes in macrophyte biomass in South Island lowland streams, New Zealand

Effects of sediment anoxia and light on turion germination and early growth of Potamogeton crispus

Contact Info

Product

Resources

About