INFLUENCES OF PLANT DENSITY & SEDIMENT FERTILITY ON INTERACTIONS BETWEEN POTAMOGETON PERFOLIATUS & MYRIOPHYLLUM SPICATUM

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FILIZADEH Y.

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Journal Paper

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Journal: Daneshvar Medicine: Basic and Clinical Research Journal Year:2001 | Volume:8 | Issue:31 Page(s): 49-56

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Title

INFLUENCES OF PLANT DENSITY & SEDIMENT FERTILITY ON INTERACTIONS BETWEEN POTAMOGETON PERFOLIATUS & MYRIOPHYLLUM SPICATUM

Author(s)

FILIZADEH Y. | Issue Writer Certificate

Keywords

SUBMERGED AQUATIC WEEDSQ4

POTAMOGETON PERFOLIATUSQ4

MYRIOPHYLLUM SPICATUMQ4

COMPETITIONQ2

SEDIMENT FERTILITYQ4

Abstract

Two submerged weeds, POTAMOGETON PERFOLIATUS L. (clupsed pondweed) and MYRIOPHYLLUM SPICATUM L. (water milofoil) were grown in laboratory tanks in single and mixed-species cultured in combinations of low and high densities at fertilized and unfertilized sediments. Biomass of individual shoot root, shoot length, shoot number, root to shoot ratio, the nitrogen content of plant biomass, and the suppression coefficient for each species were determined after 12 weeks. Above-ground biomass showed virtually no differences due to initial planting density. Above-ground biomass alone indicated that the species were relatively similar to one another when grown in unfertilized sediment. Nonetheless, mixtures were dominated by Potamogeton when grown on this sediment. Differences in grown between the species were exaggerated by increased SEDIMENT FERTILITY, with mixtures again dominated by Potamogeton. Both species allocated more amount of biomass to above-ground structures when grown on nitrogen-rich sediments, compared to growth on nitrogen-poor sediments. However, Potamogeton accumulated substantially more below-ground biomass than Myriophyllum on both sediments. Experimental results showed that Potamogeton shoots were significantly more N-costly than Myriophyllum shoots. For below-ground tissues Potamogeton was significantly less costly than Myriophyllum.Experimental results showed that, Potamogeton maintained a very high suppression coefficient under both sediment conditions. Myriophyllum showed considerable suppression of growth under presence of potamogeton especially at nitrogen-poor conditions. On a per plant basis, one Potamogeton on unfertilized and fertilized sediment were equivalent to 4 and 2.57 Myriophllum, respectively. The obtained results have led us to further understand the growth strategies of such nuisance species in different sediment and plant density. With this knowledge, management might be more easily practiced and natural community changes more accurately predicted.

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References

واکنش سراتوفیلوم و میریوفیلوم (دو علف هرز غوطه ور) به سایه، قطع کردن و رقابت در محیط های آزمایشی

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APA: Copy

FILIZADEH, Y.. (2001). INFLUENCES OF PLANT DENSITY & SEDIMENT FERTILITY ON INTERACTIONS BETWEEN POTAMOGETON PERFOLIATUS & MYRIOPHYLLUM SPICATUM. DANESHVAR MEDICINE, 8(31), 49-56. SID. https://sid.ir/paper/31207/en

Vancouver: Copy

FILIZADEH Y.. INFLUENCES OF PLANT DENSITY & SEDIMENT FERTILITY ON INTERACTIONS BETWEEN POTAMOGETON PERFOLIATUS & MYRIOPHYLLUM SPICATUM. DANESHVAR MEDICINE[Internet]. 2001;8(31):49-56. Available from: https://sid.ir/paper/31207/en

IEEE: Copy

Y. FILIZADEH, “INFLUENCES OF PLANT DENSITY & SEDIMENT FERTILITY ON INTERACTIONS BETWEEN POTAMOGETON PERFOLIATUS & MYRIOPHYLLUM SPICATUM,” DANESHVAR MEDICINE, vol. 8, no. 31, pp. 49–56, 2001, [Online]. Available: https://sid.ir/paper/31207/en

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