Results 131 to 140 of about 1,406 (181)
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Submerged macrophytes mediated remediation of molybdenum-contaminated sediments
Environmental Science and Pollution Research, 2023Molybdenum (Mo) sourced mainly from artificial activities is an emerging environmental concern whose remediation is seldom reported. This study screened the Mo-enriched macrophyte Vallisneria natans (Lour.) Hara due to its high enrichment factor (10.25). Phytoremediation (V. natans) and microorganism-assisted phytoremediation (V.
Jie Xing +5 more
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Modeling Refuge Effect of Submerged Macrophytes in Lake System
Bulletin of Mathematical Biology, 2016This paper considers a significant problem in biological control of algae issue in ecological environment. A four-dimensional dynamic model is carefully formulated to characterize the interactions among phytoplankton, submerged macrophyte, zooplankton, and general fish class in a lake ecosystem.
Lv, Dongyu +3 more
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A QUANTITATIVE SAMPLER FOR SUBMERGED AQUATIC MACROPHYTES
Journal of the Limnological Society of Southern Africa, 1976SUMMARY A simple rotary sampler, capable of quantitatively harvesting submerged aquatic macrophytes is described. The sampler can be operated from a boat and consists of a central rod with a specially designed cutting blade at the base, and collecting hooks to catch the cut material.
C. HOWARD-WILLIAMS, T. G. LONGMAN
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Distribution and biomass of submerged macrophytes in Neusiedlersee
Aquatic Botany, 1976Abstract Within the area of the open, reed-free zone in Neusiedlersee there exists a clearly defined region with Myriophyllum spicatum L. and Potamogeton pectinatus L. Phytosociological estimates, quadrat counts and direct harvest methods have been combined over a 3-year period in order to estimate the extent, density and production ...
Fritz Schiemer, Mike Prosser
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Morphological responses of a submerged macrophyte to epiphyton
Aquatic Ecology, 2009Epiphyton might have distinctive influence on the morphology of substrate macrophyte. In this article, we evaluate the influence of epiphyton on the morphological characteristics of their substrate submerged macrophyte, Potamogeton perfoliatus under two light intensities.
Munira Sultana +3 more
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Ecological Engineering, 2009
Abstract Radix swinhoei (H. Adams) is a freshwater snail commonly found in shallow regions of Lake Taihu. This research estimated, based on experiments, the consumption rates of R. swinhoei on three young submerged plants (Vallisneria spiralis, Hydrilla verticillata and Potamogeton malaianus) and its rates of nutrient release. Results showed that the
Kuan-Yi Li +3 more
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Abstract Radix swinhoei (H. Adams) is a freshwater snail commonly found in shallow regions of Lake Taihu. This research estimated, based on experiments, the consumption rates of R. swinhoei on three young submerged plants (Vallisneria spiralis, Hydrilla verticillata and Potamogeton malaianus) and its rates of nutrient release. Results showed that the
Kuan-Yi Li +3 more
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Submergent Macrophytes: Growth Under Winter Ice Cover
Science, 1976Densities of 26 submergent macrophyte species were determined in situ regularly for 3 years by individuals using self-contained underwater breathing apparatus (scuba). Although most of these species grew only during the summer, ten maintained high population densities and productivity throughout the winter. Maximum winter photosynthetic activity was 10
C W, Boylen, R B, Sheldon
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Allelopathic inhibition of epiphytes by submerged macrophytes
Aquatic Botany, 2006The hypothesis that epiphytes are more vulnerable to allelochemicals released by submerged macrophytes than phytoplankton was tested by measuring growth and photosystem (PS) II activity of three common epiphytic algae and cyanobacteria in coexistence with Myriophyllum spicatum using dialysis tubes.
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Monitoring the effects of floods on submerged macrophytes in a large river
Science of The Total Environment, 2012The lower Ebro River (Catalonia, Spain) has recently undergone a regime shift from a phytoplankton to a macrophyte-dominated system. Macrophytes started to spread at the end of the 1990s and since 2002 artificial floods (flushing flows) of short duration (1-2 days) are released from the Riba-roja dam once or twice a year in order to reduce macrophyte ...
Carles, Ibáñez +3 more
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Weight-density relationships in submerged macrophytes
Oecologia, 1987Crowded stands of submerged plants in Québec lakes have a weight-density with a shallower, but not significantly different, slope and an intercept 10 fold lower than those for terrestial stands. The examination of a larger data set including both freshwater and submerged macrophytes supported these differences.
C M, Duarte, J, Kalff
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