Plant communities in lowland Danish streams: species composition and environmental factors

Riis, Tenna; Sand‐Jensen, Kaj; Vestergaard, Ole

doi:10.1016/s0304-3770(99)00079-0

Cited by 121 publications

(98 citation statements)

References 25 publications

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“…Riis et al (2000) while examining the relationship between environmental factors and aquatic plant composition in Danish streams found that alkalinity was the most important factor in predicting plant distribution. The factors associated with sediments such as high organic matter content, poor oxygen availability, nutrient limitation and granulometric composition are known to influence the distribution and diversity of aquatic macrophytes to a varied extent (Drew and Lynch 1980;Sikora and Keeney 1983;Lachavanne 1985;Barko and Smart 1986;James and Barko 1990;Barko et al 1991;Sand-Jensen 1998;Armstrong et al 1999;Boedeltje et al 2001).…”

Section: Water Quality and Sediment Related Characteristicsmentioning

confidence: 99%

Factors affecting the distribution patterns of aquatic macrophytes

Pandit

Ganai

2014

Limnological Review

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Aquatic macrophytes constitute important components of many freshwater ecosystems. The manifold role of aquatic macrophytes in freshwater habitats is closely linked to their distribution, which in turn depends on a myriad of factors. Foremost, among these are light, water temperature, water quality changes and nutrient enrichment, sediment composition and fluctuations in water levels. Light and temperature are of paramount importance in determining the distribution (with depth, season and latitude), thereby influencing productivity and species composition as well. Sediment compositions markedly affect the growth rates of macrophytes which in turn have a profound influence on the distribution of aquatic macrophytes. Water quality changes and nutrient enrichment can cause considerable variations in the species richness, composition, and density of aquatic vegetation. The reduction in water levels could bring drastic changes in the species composition and distribution of macrophytes. Factors associated with competition, herbivory, land use and land cover changes etc. also play an important role in shaping macrophyte distribution and community structure. In this review we examine both biotic and abiotic factors that influence the structural attributes like species composition, distribution, abundance and diversity of aquatic macrophytes.

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Section: Water Quality and Sediment Related Characteristicsmentioning

confidence: 99%

Factors affecting the distribution patterns of aquatic macrophytes

Pandit

Ganai

2014

Limnological Review

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“…As part of the WFD, aquatic macrophytes are considered as one of the biological quality elements for which an assessment of status must be made. Macrophytes have been studied not only in the context of lake and ditch trophic systems [3][4][5], alkalinity [6] and acidification but also as indicator species or as vegetation in running waters [7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Macrophytic Distribution and Trophic State of Some Natural and Impacted Watercourses - Belgium Wallonia

Alaoui¹,

Rosillon²

2013

Int. j. water sci.

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In the present paper we investigated macrophyte community structure in 60 natural and impacted stream and river sites distributed throughout the Walloon river network. The objectives were to describe the distribution of macrophyte assemblages in relation to physico-chemical parameters of their environment and to assess the variability in ecological metrics within these watercourses. Two-way clustering allowed us to simultaneously assign sample units and species to groups by performing two separate cluster analyses. Indicator species analysis allowed us to assess the degree to which a species indicated a group, based on its constancy and distribution of abundance. Six end-groups were identified as a result of using twoway clustering and indicator species analysis techniques. Hygroamblystegium fluviatile, Chiloscyphus polyanthos and Lemanea fluviatilis were found to characterize acidic and low impacted streams and rivers (G1), while Ranunculus fluitans was found in all low impacted large streams (G2). Potamogeton pectinatus, proved to be more common in eutrophicated waters in the calcareous areas particularly in the ʺLoess low plateauxʺ region (G6).Cinclidotus riparius, Fissidens crassipes and Pellia endiviifolia, appeared in rivers situated in the Condroz region (G4), which was characterized by a high concentration of nitrogen.

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“…It is likely that, sufficient amount of light and appropriate hydrological conditions for macrophytes are partially responsible for a positive correlation between species richness of macrophytes and portion of artificial banks. The other ecological variables such as the distance from stream source, ammonium content in water, depth of water, water conductivity, flexuosity, portion of natural land cover in stream contact zone and flow velocity class were shown to influence both species composition and richness of macrophytes in streams by earlier studies [5,8,15,27], demonstrating a comprehensive effect of several ecological variables on species richness of macrophytes in streams.…”

Section: Discussionmentioning

confidence: 88%

“…Consequently, the portion of artificial banks and pollution by nitrogen compounds and phosphates increase, whereas shading by woody vegetation on banks, flexuosity of stream course, flow velocity, and portion of natural land cover in the contact zone of streams decrease in these parts of the streams. Similar effects of natural-anthropogenic gradient or the abovementioned environmental variables on macrophytes in streams are known from studied focusing on species composition [5,8,16,24]. Relationships between species diversity and environment are less frequent studied; for example, data from comparative biodiversity studies of various aquatic habitats in England are known [1].…”

Section: Discussionmentioning

confidence: 99%

“…The effort of detecting causes of differences in the macrophyte composition resulted in numerous studies of macrophyte-environment relationship. Several papers have focused on species composition in streams in relation to ecological variables [5][6][7][8][9] or human impact and management [10]. The acquired knowledge is applicable under the Water Framework Directive [11] where macrophytes are used as one group of the indicators of ecological status in different types of surface waters [cf.…”

Section: Introductionmentioning

confidence: 99%

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Environmental effects on species richness of macrophytes in Slovak streams

et al. 2012

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The effect of 19 environmental variables on species richness of macrophytes was studied in 39 Slovak streams. The studied streams were poor in species; in total, 88 macrophyte taxa were found and the average number of macrophytes per sampling site was 4, ranging from 0 to15. The most frequently occurring macrophytes were filamentous algae (occurrence at 38.6% of sampling sites), followed by Rhynchostegium riparioides (28.4%) and Phalaris arundinacea (19.3%). The strongest environmental gradient in the sampling site detected by factor analysis (factor 1 explains more than 32% variability) is related to the portion of artificial banks, shading by woody vegetation along banks, flexuosity of stream course and the portion of natural land cover in the contact zone of the stream, and can be interpreted as a natural-anthropogenic gradient. The following variables had the highest correlations with species richness of macrophytes: shading by woody vegetation (r=−0.507), portions of artificial bank (r=0.488), flexuosity (r=−0.457) and distance from stream source (r=0.388).

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Plant communities in lowland Danish streams: species composition and environmental factors

Cited by 121 publications

References 25 publications

Factors affecting the distribution patterns of aquatic macrophytes

Factors affecting the distribution patterns of aquatic macrophytes

Macrophytic Distribution and Trophic State of Some Natural and Impacted Watercourses - Belgium Wallonia

Environmental effects on species richness of macrophytes in Slovak streams

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