scholarly journals Approach to optimizing ecological monitoring of water quality using indicators of constancy of higher water vegetation (using example of upper course of white river in Bashkortostan republic)

2021 ◽  
Vol 54 (2) ◽  
pp. 101-105
Author(s):  
Boris Yu. Chaus
Keyword(s):  
Aquatic Vegetation ◽  
Lemna Minor ◽  
Myriophyllum Spicatum ◽  
Ecological Monitoring ◽  
Ceratophyllum Demersum ◽  
Potamogeton Crispus ◽  
Najas Marina ◽  
Republic Of Bashkortostan ◽  
Higher Aquatic Vegetation ◽  
Potamogeton Perfoliatus

Abstract. The article provides an analysis of the dynamics of the constancy indicators of representatives of higher aquatic vegetation (VBR) in the upper reaches of the Belaya River (Republic of Bashkortostan) from 2005 to 2019. Constancy indicators of 11 species of BBP (Butomus umbellatus L., 1753; Elodea canadensis Michx., 1803; Najas marina L., 1753; Potamogeton natans L., 1753; Potamogeton perfoliatus L., 1753; Potamogeton crispus L., 1753; Stuckenia pectinata L., 1753; Myriophyllum spicatum L., 1753; Lemna minor L., 1753; Spirodela polyrhiza Schleid., 1839 and Ceratophyllum demersum L., 1753) were registered in the areas of 2 state water posts the Shushpa railway station and the Arsky Kamen recreation house. In the course of research, for the first time, lists of permanent, additional and random species of BBP were compiled, correlation-regression models of the relationships between the constancy indicators of representatives of higher aquatic vegetation with the content of chemicals were calculated, the pollutants most strongly affecting the constancy indicators of representatives of BBP were identified, determined in the water of the upper course of the Belaya River.

Biogeochemical specialization of macrophytes and their role as a biofilter in the Selenga delta

2019 ◽  
Vol 12 (3) ◽  
pp. 240-263 ◽  
Author(s):  
G. L. Shinkareva ◽  
M. Yu. Lychagin ◽  
M. K. Tarasov ◽  
J. Pietroń ◽  
M. A. Chichaeva ◽  
...  
Keyword(s):  
Aquatic Vegetation ◽  
Chemical Elements ◽  
Myriophyllum Spicatum ◽  
Ceratophyllum Demersum ◽  
Higher Aquatic Vegetation ◽  
Potamogeton Perfoliatus ◽  
Vegetation Species ◽  
Dissolved Form ◽  
Suspended Form ◽  
Weak Accumulation

This study aims to evaluate the biofiltration ability of higher aquatic vegetation of the Selenga delta as a barrier for heavy metals and metalloids (HMM) flows into the Lake Baikal. Main aquatic vegetation species have been collected from deltaic channels and inner lakes: Nuphar pumila, Potamogeton perfoliatus, P. pectinatus, P. natans, P. friesii, Butomus umbellatus, Myriophyllum spicatum, Ceratophyllum demersum, Phragmites australis. Analysis of the obtained data showed that regardless of the place of growth hydatophytes spiked water-milfoil (M. spicatum) and the fennel-leaved pondweed (P. pectinatus) most actively accumulate metals. Opposite tendencies were found for helophytes reed (Ph. australis) and flowering rush (B. umbellatus), which concentrate the least amount of elements. This supports previous findings that the ability to concentrate HMM increases in the series of surface – floating – submerged plants. Regarding river water, the studied macrophyte species are enriched with Mn and Co, regarding suspended matter – Mo, Mn and B, regarding bottom sediments – Mn, Mo and As. We identified two associations of chemical elements: S-association with the predominant suspended form of migration (Be, V, Co, Ni, W, Pb, Bi, Mn, Fe and Al) and D-association with the predominant dissolved form of migration (B, U, Mo, Cr, Cu, Zn, As, Cd, Sn and Sb). Due to these associations three groups of macrophytes were distinguished – flowering rush and reed with a low HMM content; small yellow pond-lily and common floating pondweed with a moderate accumulation of S-association and weak accumulation of D-association elements; and clasping-leaved pondweed, fennel-leaved pondweed, and pondweed Friesii accumulating elements of both S and D groups. The results suggest that macrophytes retain more than 60% of the total Mn flux that came into the delta, more than 10% – W, As, and from 3 to 10% B, Fe, Co, Mo, Cd, V, Ni, Bi, Be, Cu, Zn, Cr, U, Al. The largest contribution is made by the group of hydatophytes (spiked water-milfoil and pondweed), which account for 74 to 96% of the total mass of substances accumulated by aquatic plants.

scholarly journals The effect of ice phenology exerted on submerged macrophytes through physicochemical parameters and the phytoplankton abundance

2015 ◽  
Author(s):  
Wojciech Ejankowski ◽  
Tomasz Lenard
Keyword(s):  
Physicochemical Parameters ◽  
Aquatic Vegetation ◽  
Myriophyllum Spicatum ◽  
Ice Cover ◽  
Water Transparency ◽  
Ceratophyllum Demersum ◽  
Total Biomass ◽  
Eutrophic Lakes ◽  
Macrophyte Species ◽  
Tn:Tp Ratio

<p>The physicochemical parameters of water, the concentration of chlorophyll-<em>a</em> and the submerged aquatic vegetation (SAV) were studied to evaluate the effects of different winter seasons on the biomass of macrophytes in shallow eutrophic lakes. We hypothesised that a lack of ice cover or early ice-out can influence the physicochemical parameters of water and thus change the conditions for the development of phytoplankton and SAV. The studies were conducted in four lakes of the Western Polesie region in mid-eastern Poland after mild winters with early ice-out (MW, 2011 and 2014) and after cold winters with late ice-out (CW, 2010, 2012 and 2013). The concentrations of soluble and total nitrogen, chlorophyll-<em>a</em> and the TN:TP ratio in the lakes were considerably higher, whereas the concentration of soluble and total phosphorus and water transparency were significantly lower after the MW compared with after the CW. No differences were found in water temperature, reaction and electrolytic conductivity. Low water turbidity linked with low concentration of chlorophyll-<em>a</em> after the CW resulted in increased water transparency and the total biomass of the SAV. The negative effect of the MW on the macrophyte species was stronger on more sensitive species (<em>Myriophyllum spicatum</em>,<em> Stratiotes aloides</em>) compared with shade tolerant <em>Ceratophyllum demersum</em>. Our findings show that the ice cover phenology affected by climate warming can change the balance between phytoplankton and benthic vegetation in shallow eutrophic lakes, acting as a shift between clear and turbid water states. We speculate that various responses of macrophyte species to changes in the water quality after two winter seasons (CW and MW) could cause alterations in the vegetation biomass, particularly the expansion of shade tolerance and the decline of light-demanding species after a series of mild winters.</p>

scholarly journals Impact of riparian trees shade on aquatic plant abundance in conservation islands

2011 ◽  
Vol 70 (2) ◽  
pp. 245-258 ◽  
Author(s):  
Magdi Ali ◽  
Samar Hassan ◽  
Abdel-Samei Shaheen
Keyword(s):  
Aquatic Plant ◽  
Submerged Macrophytes ◽  
Myriophyllum Spicatum ◽  
Ceratophyllum Demersum ◽  
Submerged Plants ◽  
Plant Abundance ◽  
Potamogeton Crispus ◽  
Azolla Filiculoides ◽  
Riparian Trees ◽  
Significant Difference

Impact of riparian trees shade on aquatic plant abundance in conservation islands Temperature, acidity, light conditions, total dissolved salts, conductivity, dissolved oxygen, submerged macrophytes and shade and sun path directions were measured at 23 sites along the River Nile banks with aAcacia nilotica growing at water's edge around the First Cataract Conservation Islands. Ceratophyllum demersum and Potamogeton crispus were common in the shaded and unshaded zones, Myriophyllum spicatum and Vallisneria spiralis were found only in the unshaded zone and Azolla filiculoides only in the shaded zone. Banks of the sites surveyed were oriented to five directions (NW, SE, NE, SW, N). There is a significant difference in both the type and density of submerged plants growing under the shade of riparian trees (Acacia nilotica) as compared to unshaded areas. Water column irradiance is the most influential variable dictating the distribution of submerged plants. The area of the shade provided by riparian trees was affected by environmental and/or plant variables. Environmental variables comprised the daily course of the exposition to sun; and plant variables included the area of the tree crown, the height of the tree and geographical position of the tree in relation to sun exposition. Trees on the west bank of the islands at the SW-NE direction have the highest shading effect. The management of tree vegetationmight control incoming solar radiation affecting submerged macrophytes.

scholarly journals Structure of epiphyton communities on Lake Baikal submerged macrophytes

2012 ◽  
Vol 12 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Galina Pomazkina ◽  
Lyubov Kravtsova ◽  
Ekaterina Sorokovikova
Keyword(s):  
Lake Baikal ◽  
New Records ◽  
Submerged Macrophytes ◽  
Myriophyllum Spicatum ◽  
Elodea Canadensis ◽  
Ceratophyllum Demersum ◽  
Potamogeton Perfoliatus ◽  
Low Diversity ◽  
Quantitative Characteristics ◽  
Quantitative Development

Abstract We carried out a first study of Lake Baikal epiphyton on six species of submerged macrophytes: Myriophyllum spicatum L., Potamogeton perfoliatus L., Potamogeton sp., Sparganium gramineum Georgi, Ceratophyllum demersum L., and Elodea сanadensis Michaux. We identified 70 epiphyton species and intraspecific taxa belonging to 3 phyla, viz. Ochrophyta, Cyanobacteria, and Chlorophyta. Nine species of Cyanobacteria were new records for Lake Baikal. Epiphyton communities differing in species composition and quantitative characteristics grew on diverse species of submerged macrophytes. High levels of species richness were recorded on Sparganiumgramineum and Potamogeton sp., whereas low diversity of epiphyton was observed on Myriophyllum spicatum and Elodea canadensis. A monodominant community was revealed on the invasive Elodea canadensis represented by Cocconeis placentula var. placentula. Specific characteristics of morphology of submerged macrophytes influenced the structural organization and quantitative development of epiphyton. Epiphyton abundance and biomass were higher on upper sections of most plants than on lower sections, probably because of canopy shading of macrophyte lower portions.

scholarly journals Study on water purification with warm and cold season aquatic plants

2021 ◽  
Vol 260 ◽  
pp. 01016
Author(s):  
Jiajun Sun ◽  
Yajie Zhang ◽  
Guangyu Ma ◽  
Junhong Xiao ◽  
Yajing Cai ◽  
...  
Keyword(s):  
Aquatic Plants ◽  
Myriophyllum Spicatum ◽  
Warm Season ◽  
Nutrient Release ◽  
Research Area ◽  
Cold Season ◽  
Ceratophyllum Demersum ◽  
Potamogeton Crispus ◽  
Nitrogen And Phosphorus ◽  
Baiyangdian Wetland

As a national key protection and restoration project, ecological restoration of Baiyangdian Wetland has an important significance for environmental management. As the research area in Zaozhadian wetland, the purification effect of warm season and cold season aquatic plants was studied under different overflying water qualities. It provides a theoretical and experimental basis for the ecological environment restoration and management of wetlands. The results showed that the warm season and cold season aquatic plants all played important roles on the nitrogen and phosphorus removal and maintained the stable water environmental from the nutrient release from soil. The warm season plant-mixed Myriophyllum spicatum and Ceratophyllum demersum and the cold season plant-Potamogeton crispus L. can be reasonably configurated for the wetland restoration.

Growth inhibition of blue-green algae by allelopathic effects of macrophytes

1999 ◽  
Vol 39 (8) ◽  
pp. 47-53 ◽  
Author(s):  
Satoshi Nakai ◽  
Yutaka Inoue ◽  
Masaaki Hosomi ◽  
Akihiko Murakami
Keyword(s):  
Growth Inhibition ◽  
Green Algae ◽  
Myriophyllum Spicatum ◽  
Ceratophyllum Demersum ◽  
Inhibitory Effects ◽  
Potamogeton Crispus ◽  
Blue Green Algae ◽  
Macrophyte Species ◽  
Allelopathic Compounds ◽  
Significant Growth Inhibition

Inhibitory effects of macrophytes on the growth of blue-green algae (i.e. Microcystis aeruginosa, Anabaena flos-aquae, or Phormidium tenue) were evaluated in a coexistence culture system in which concentrations of different macrophyte species were varied (i.e. Egeria densa, Cabomba caroliniana, Myriophyllum spicatum, Ceratophyllum demersum, Eleocharis acicularis, Potamogeton oxyphyllus, Potamogeton crispus, Limnophila sessiliflora, or Vallisneria denseserrulata). Coexistence assay results showed that only the macrophytes C. caroliniana or M. spicatum inhibited the growth of all blue-green algae, with the inhibitory effects of M. spicatum being stronger than those of C. caroliniana and being produced by the release of allelopathic compounds. In subsequent initial addition assays using M. spicatum with the alga M. aeruginosa, no significant growth inhibition was observed; whereas, in contrast, quasi-continuous addition assays showed strong growth inhibition by M. spicatum. These results provide the first evidence that unstable, growth-inhibiting allelopathic compounds are continuously secreted by M. spicatum.

scholarly journals Water parameters and species composition of macrophytes in reclamation lakes in the area of a former sulphur borehole mine (SE Poland)

2017 ◽  
Vol 71 (1) ◽  
pp. 27
Author(s):  
Rafał Krawczyk ◽  
Łukasz Lis ◽  
Jacek Urbaniak
Keyword(s):  
Myriophyllum Spicatum ◽  
Potamogeton Pectinatus ◽  
Ceratophyllum Demersum ◽  
Water Parameters ◽  
Najas Marina ◽  
Se Poland ◽  
Positive Effect ◽  
Chemical Water ◽  
Potamogeton Natans ◽  
Reclamation Process

Macrophytes and selected physical-chemical water properties were studied in 17 post-mining lakes of Jeziórko Sulphur Mine – one of the largest borehole sulphur mines in the world. Artificial lakes were constructed in subsidence depressions during the reclamation process of mining fields. They were characterized by high mineralization – conductivity ranged from 723 to 2295 μS/cm. The reaction was near neutral, or more frequently, slightly alkaline. Concentrations of phosphorus and organic matter were low. In the group of hydrophytes, Ceratophyllum demersum, Myriophyllum spicatum, Najas marina, Utricularia vulgaris, Eleocharis acicularis, Potamogeton pectinatus, Potamogeton natans and Potamogeton pusillus were frequently dominant. In several lakes, large macroscopic algae dominated – charophytes forming large, dense Chara meadows. In marsh communities, Phragmites australis was the most expansive. Reclamation process had a positive effect on diversity, some of the species found in the study area are regionally rare, including one species which is threatened in Poland (Najas minor). No alien species were recorded.

scholarly journals AQUATIC VEGETATION OF SHALLOW HYPERTROPHIC LAKE IN DIFFERENT HYDROLOGICAL CONDITIONS

2020 ◽  
pp. 38-48
Author(s):  
A. Rusanov ◽  
A. Terekhov
Keyword(s):  
Water Level ◽  
Aquatic Vegetation ◽  
Climatic Factors ◽  
Ceratophyllum Demersum ◽  
Submerged Vegetation ◽  
Lake Area ◽  
Coverage Area ◽  
Hypertrophic Lake ◽  
Hydrological Conditions ◽  
Potamogeton Perfoliatus

Comparison of the distribution of aquatic vegetation in shallow hypertrophic Lake Nero (Yaroslavl oblast, Russia) in different hydrological conditions – during low water phase in 2002–2004 and water level rise in 2017 is presented. The total area covered by aquatic vegetation increased from 14.8 km2 in 2000–2004 to 15.8 km 2 in 2017. Correspondingly, the lake area covered by macrophytes showed its increase from 27% to 29%. The observed increase in the total plant coverage was mainly driven by helophytes which increased in the coverage area from 8.4 km2 to 11.2 km2. The coverage area of submerged vegetation during this period decreased from 5.4 km2 to 3.6 km2. Potamogeton perfoliatus showed the highest reduction in the coverage area by factor of 2.6 in the central part of the lake. In contrast, the coverage area of Ceratophyllum demersum and Myriophyllum verticillatum did not change mostly in the shallow, southern part of the lake. The analysis of literature and our data revealed that increase in water level due to building a dam on the River Veksa in the 1980s and impact of climatic factors had a negative influence on submerged vegetation. Thus, the high water level is one of the mechanisms stabilising the ecosystem of the Lake Nero in the turbid, phytoplankton-dominated state.

Ecological characteristics of plankton and aquatic vegetation in Lake Qiluhu

2014 ◽  
Vol 69 (8) ◽  
pp. 1620-1625 ◽  
Author(s):  
Hu Mingming ◽  
Zhou Huaidong ◽  
Wang Yuchun ◽  
Wang Yingcai ◽  
Wang Zhen ◽  
...  
Keyword(s):  
Aquatic Vegetation ◽  
Potamogeton Pectinatus ◽  
Ceratophyllum Demersum ◽  
Submerged Vegetation ◽  
Total Biomass ◽  
Potamogeton Crispus ◽  
Average Value ◽  
Set Up ◽  
Limnothrix Redekei ◽  
High Level

Investigations of the phytoplankton, zooplankton, zoobenthos and aquatic vegetation in Lake Qiluhu were carried out in February, 2009. Over the whole lake, 13 sampling sites were set up for the analysis of phytoplankton and zooplankton, and 22 profiles for the collection of macrophytes and zoobenthos. In the survey, 7 phyla, 65 algae species were identified. The average abundance of phytoplankton was 7.16 × 108 cells/L, and the dominant specie was Limnothrix redekei. No obvious surface accumulation of algae was detected. The concentration of Chlorophyll a ranged from 85 to 101 μg/L, and the average value was 93 μg/L. Nineteen species of zooplankton were observed, including 4 species of rotifers, 6 species of cladocerans and 9 species of copepods. Copepods were the dominant species, their abundance reaching 68%, whilst Cladocerans took second place with an abundance proportion of 28%. Six species of submerged vegetation were identified: Potamogeton Pectinatus, Myriophyllum, Elodea Canadensis, Ceratophyllum demersum and Potamogeton crispus. Amongst them, the dominant vegetation was P. Pectinatus, the biomass of which was up to 63% of the total biomass. Emerged macrophytes were cluster distributed across the whole lake, mainly consisting of Scirpus tabernaemontani, phragmites communis and cane shoots. Unfortunately, no living zoobenthos were found at the sites. The results indicated that, in Lake Qiluhu, the abundance of phytoplankton was maintained at a high level. The ecological function of submerged vegetation was gradually being lost because of its low standing crop and coverage, and the benthic animal habitat was severely damaged.

scholarly journals Viability of Aquatic Plant Fragments following Desiccation

2013 ◽  
Vol 6 (2) ◽  
pp. 320-325 ◽  
Author(s):  
Matthew A. Barnes ◽  
Christopher L. Jerde ◽  
Doug Keller ◽  
W. Lindsay Chadderton ◽  
Jennifer G. Howeth ◽  
...  
Keyword(s):  
Mass Loss ◽  
Aquatic Plants ◽  
Aquatic Plant ◽  
Myriophyllum Spicatum ◽  
Hydrilla Verticillata ◽  
Ceratophyllum Demersum ◽  
Myriophyllum Aquaticum ◽  
Potamogeton Crispus ◽  
Air Exposure ◽  
Desiccation Rate

AbstractDesiccation following prolonged air exposure challenges survival of aquatic plants during droughts, water drawdowns, and overland dispersal. To improve predictions of plant response to air exposure, we observed the viability of vegetative fragments of 10 aquatic plant species (Cabomba caroliniana, Ceratophyllum demersum, Elodea canadensis, Egeria densa, Myriophyllum aquaticum, Myriophyllum heterophyllum, Myriophyllum spicatum, Potamogeton crispus, Potamogeton richardsonii, and Hydrilla verticillata) following desiccation. We recorded mass loss, desiccation rate, and plant fragment survival across a range of air exposures. Mass loss accurately predicted viability of aquatic plant fragments upon reintroduction to water. However, similar periods of air exposure differentially affected viability between species. Understanding viability following desiccation can contribute to predicting dispersal, improving eradication protocols, and disposing of aquatic plants following removal from invaded lakes or contaminated equipment.

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