Results 171 to 180 of about 6,609 (212)

Ammonia stress on the carbon metabolism of Ceratophyllum demersum

Environmental Toxicology and Chemistry, 2014
Abstract   In the present study, carefully controlled pH ranges (7 and 9) were used to distinguish between the effects of un-ionized NH3 and the NH4+ ion. The objective was to find the effect of different total ammonia nitrogen concentrations and pH values on the carbon metabolism of Ceratophyllum ...
Jingqing, Gao, Linshuai, Li, Zhiyuan, Hu, Songfeng, Zhu, Ruiqin, Zhang, Zhiting, Xiong   +5 more
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Ceratophyllum demersum – phosphorus interactions in nutrient enriched aquaria

Hydrobiologia, 2003
High macrophyte density in shallow lakes is often associated with clear water, especially when the non-rooted, submerged angiosperm Ceratophyllum demersum is dominant. Lack of true roots and high surface area:volume ratio suggest that nutrient uptake from the water column by C. demersum may be high.
Paola Lombardo, G. Dennis Cooke
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Effect of ammonia stress on nitrogen metabolism of Ceratophyllum demersum

Environmental Toxicology and Chemistry, 2015
Abstract   The objective of the present study was to determine the effect of total ammonia N concentration and pH on N metabolism of Ceratophyllum demersum and to evaluate stress as a result of inorganic N enrichment in the water column on submerged macrophytes.
Gao, Jingqing, Li, Linshuai, Hu, Zhiyuan, Yue, H., Zhang, Ruiqin, Xiong, Zhiting   +5 more
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Ceratophyllum demersum Linnaeus 1753

2007
Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part C), pp. 370-473 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 405, DOI: 10.5281/zenodo ...
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Growth Substances and Dormancy in Ceratophyllum demersum

Physiologia Plantarum, 1979
Abstract Ceratophyllum demersum L. occurs in winter in the dormant form, in summer in the vegetative form. Factors that affect growth and dormancy in Ceratophyllum were studied. After several weeks of severe winter conditions the plants changed from dormant to quiescent state.
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Photosynthetic characteristics of the submerged macrophyte Ceratophyllum demersum

Physiologia Plantarum, 1986
The photosynthetic and growth characteristics of Ceratophyllum demersum L. were investigated under laboratory conditions which simulated those encountered in the plants' normal environment. The carbon fixation rate of C. demersum measured with 14C at light and carbon saturation at pH 8.0 was 4.48 mg C (g ash‐free dry weight)−1 h−1. It was lower at pH 6.
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Floral development and phyllotactic variation in Ceratophyllum demersum (Ceratophyllaceae)

American Journal of Botany, 2003
The floral development of staminate and pistillate flowers of Ceratophyllum demersum was observed, with particular focus on the phyllotactic variation in staminate flowers, using scanning electronic microscopy (SEM). We discerned patterns of development of some important new morphological features, e.g., the difference and discontinuity between the ...
Akitoshi, Iwamoto, Akiko, Shimizu, Hideaki, Ohba   +2 more
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Heavy metal adsorption properties of a submerged aquatic plant ( Ceratophyllum demersum )

Bioresource Technology, 2004
Heavy metals can be adsorbed by living or non-living biomass. Submerged aquatic plants can be used for the removal of heavy metals. In this paper, lead, zinc, and copper adsorption properties of Ceratophyllum demersum (Coontail or hornwort) were investigated and results were compared with other aquatic submerged plants.
Keskinkan O., Goksu M.Z.L., Basibuyuk M., Forster C.F.   +3 more
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Charophyte occurrence in Ceratophyllum demersum stands

Hydrobiologia, 2014
The hornwort Ceratophyllum demersum is a loosely attached to the bottom or free-floating vascular macrophyte, which builds dense stands in nutrient-rich waters. The hornwort stands are usually monospecific communities with a negligible contribution of other aquatic plants.
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Competitive Bioaccumulation by Ceratophyllum demersum L.

2022
Amir Parnian, James N. Furze, Mostafa Chorom, Neemat Jaafarzadeh   +3 more
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