The effect of epiphytic algae on the growth and production of Potamogeton perfoliatus L. in two light conditions

Asaeda, Takashi; Sultana, Munira; Manatunge, Jagath; Fujino, Takeshi

doi:10.1016/j.envexpbot.2004.02.001

Cited by 60 publications

(39 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The result indicates that epiphytic algae imposed a prominent adverse effect on the biomass accumulation of V. natans, especially when the nitrate-N concentration was 2.5-5 mg/L, at which point the epiphytic algal biomass attached on leaves of V. natans was particularly high. The adverse effect of epiphytic algae on the host plants was consistent with the result of some other previous studies [33,48]. As the nitrate-N concentration increased from 2.5 to 10 mg/L, the biomass of V. natans in the epiphytic algae group gradually increased, suggesting that increasing the nitrate-N concentration could neutralize the adverse effect of epiphytic algae on biomass accumulation of V. natans, probably because the growth of epiphytic algae was inhibited by a high nitrate-N concentration.…”

Section: Discussionsupporting

confidence: 81%

“…The chl-a/chl-b ratio reflecting the light utilization efficiency of photosynthesis in leaves of plants suggested that epiphytic algae aggravated the adverse influence on light utilization efficiency of V. natans at 2.5-5 mg/L nitrate-N in the water column, when epiphytic algal biomass was reaching a high level. This result was consistent with the demonstration that an epiphytic algal boom resulted in the decline of chl-a density in the leaves of plants [33,34].…”

Section: Discussionsupporting

confidence: 81%

“…Therefore, the overgrowth of epiphytic algae rather than planktonic algae may be the most important factor leading to the loss of submerged macrophytes [23,31]. In fact, the results of many previous studies have suggested that the presence of dense epiphytic algae populations inhibits the growth of submerged macrophytes [32][33][34], mainly by reducing light and nutrient availability for the plants [29,35], which may further lead to the loss of submerged macrophytes. As a consequence, the clear-water state in shallow lakes is transformed into a turbid-water state with a high density of phytoplankton [36,37].…”

Section: Introductionmentioning

confidence: 95%

See 2 more Smart Citations

The Biomass and Physiological Responses of Vallisneria natans (Lour.) Hara to Epiphytic Algae and Different Nitrate-N Concentrations in the Water Column

Min

Zuo

Zhang

et al. 2017

Water

View full text Add to dashboard Cite

Abstract:Increasing N concentration and the high density of epiphytic algae are both key factors leading to the decline of submerged macrophytes in many eutrophic lakes. In order to investigate the impacts of increased nitrate-N concentration and the growth of epiphytic algae on the decline of submerged vegetation, we conducted a 2 × 4 factorial experiment with the submerged macrophyte Vallisneria natans (Lour.) Hara by measuring the biomass of plants and some physiological indexes in leaves of V. natans under four nitrate-N concentrations in the water column (0.5, 2.5, 5, and 10 mg/L) and two epiphytic groups (epiphytic algae group and no epiphytic algae group). The results suggested that epiphytic algae could impose adverse effects on the biomass accumulation of V. natans, while the increasing nitrate-N concentration (0.5-10 mg/L) could oppositely promote this process and counteract the adverse effect of epiphytic algae. When nitrate-N concentration was 5 mg/L, the total chlorophyll content in leaves of V. natans in the epiphytic algae group was prominently lower compared with the no epiphytic algae group, while MDA, free proline, and anti-oxidant enzyme (SOD, POD, CAT) activities were significantly higher. Overhigh nitrate-N concentration in the water column also directly imposed adverse effects on the physiology of V. natans. When nitrate-N concentration was over 5 mg/L, the total chlorophyll content and free proline decreased in the no epiphytic algae group, while soluble carbohydrates and soluble proteins decreased when nitrate-N was over 2.5 mg/L. Meanwhile, epiphytic algae and nitrate-N content imposed a synergetic effect on the anti-oxidant enzyme activities of V. natans. When nitrate-N concentration was over 5 mg/L, SOD, POD, and CAT activities kept constant or decreased, which indicated that the oxidation resistance of V. natans was inhibited by stress. Our results indicate that epiphytic algae and increasing nitrate-N concentration in the water column could severally or synergistically impose adverse effects on the physiology of submerged macrophytes and are both key factors leading to the decline of submerged macrophytes.

show abstract

Section: Discussionsupporting

confidence: 81%

Section: Discussionsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

The Biomass and Physiological Responses of Vallisneria natans (Lour.) Hara to Epiphytic Algae and Different Nitrate-N Concentrations in the Water Column

Min

Zuo

Zhang

et al. 2017

Water

View full text Add to dashboard Cite

show abstract

“…Epiphytes compete for light with macrophytes and, consequently, limiting production and growth of the plant substrate (Asaeda et al 2004;Jones and Sayer 2003).…”

Section: Potamogeton Perfoliatusmentioning

confidence: 99%

“…On the other hand, chlorophyll content and thickness of the epiphytic layer (Dodds et al 1999;Enríquez et al 1996) leads to a competitive interaction for light between periphyton and its macrophyte substrate (Bécares et al 2008;Jones and Sayer 2003). Thus, the specific depth distribution of epiphyte biomass directly influences light capture efficiency, morphology and physiology of macrophytes by additional attenuation of light at the adaxial side of leaves (Asaeda et al 2004;Sand-Jensen and Borum 1991;Sultana et al 2010). Macrophytes also affect periphyton.…”

Section: Introductionmentioning

confidence: 99%

The effect of periphyton on the light environment and production of Potamogeton perfoliatus L. in the mesotrophic basin of Lake Balaton

Tóth

2013

Aquat Sci

View full text Add to dashboard Cite

Light within the littoral zone affects the productivity and interaction between periphyton and its macrophyte substrate. The effect of periphyton on macrophyte photosynthesis, seasonal variation and vertical distribution of periphyton on artificial substrates (plastic strips), and the effect of periphyton on the light environment was studied in Lake Balaton.Data showed that an average of 4.1±0.4 mg (dry weight) cm -2 of periphyton had accumulated on the plastic strips after 8.8±0.4 days. This biomass corresponded to 294±30 μg m -2 chl-a of epiphytic algae and blocked 92.3±0.8 % of the depth specific radiation.Seasonal variation and specific vertical distribution of periphyton were observed. The most active time of periphyton accumulation corresponded to spring up until mid-June. Later in the year, the amount of periphyton significantly decreased. The optimal conditions for periphyton accumulation were at 30-40 cm depth.Most of the light reaching the adaxial leaf surface was attenuated by periphyton, decreasing the production of Potamogeton perfoliatus by 60-80%. This increased the importance of backscattered light that corresponded to 10-15% of the macrophyte production.A smaller part of the periphyton consisted of precipitated inorganic material, while epiphytic algae, making up the majority of the periphyton, were connected to both benthic (dominantly 2 benthic penales) and pelagic (very close seasonal dynamics of pelagic and epiphytic biomass) algae. Periphyton affects macrophyte production especially in spring and in the upper water layers even in a mesotrophic water body. This increases the importance of the light absorbed through the abaxial side of the leaf and confirm the role of periphyton in transition from clear to turbid water states.

show abstract

References

2010

Freshwater Algae

View full text Add to dashboard Cite

The effect of epiphytic algae on the growth and production of Potamogeton perfoliatus L. in two light conditions

Cited by 60 publications

References 43 publications

The Biomass and Physiological Responses of Vallisneria natans (Lour.) Hara to Epiphytic Algae and Different Nitrate-N Concentrations in the Water Column

The Biomass and Physiological Responses of Vallisneria natans (Lour.) Hara to Epiphytic Algae and Different Nitrate-N Concentrations in the Water Column

The effect of periphyton on the light environment and production of Potamogeton perfoliatus L. in the mesotrophic basin of Lake Balaton

References

Contact Info

Product

Resources

About