The colonisation of disturbed freshwater habitats byCharaceae

Wade, P. M.

doi:10.1007/bf02913027

Cited by 50 publications

(35 citation statements)

References 7 publications

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“…2), despite Chara sp. being a pioneering taxon (Wade 1990). In assemblage two, the broad floating leaves of N. lutea, and P. natans and the bushy shoots of U. macrorhiza and M. sibiricum all present greater hydraulic resistance (Haslam 1978).…”

Section: Discussionmentioning

confidence: 99%

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River Connectivity Affects Submerged and Floating Aquatic Vegetation in Floodplain Wetlands

2013

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The submerged and floating plant communities in floodplain wetlands of the Upper Columbia River have never been described. To explore mechanisms behind the influence of the annual flood pulse on vegetation, we investigated how species group into flood response guilds whose distributions vary along a connectivity gradient between 44 floodplain wetlands and the river, how connectivity influences water and sediment, and to what degree the effect of connectivity on vegetation is mediated by its effects on these environmental variables. We characterised assemblages with cluster and indicator species analysis, as well as non-metric scaling ordination and tested a structural equation model, which defined the relationship between assemblage composition, sediment and water quality, and connectivity to the river. We found four assemblages, each associated with different water and sediment conditions, and positioned at differing degrees of connectivity. The model provided a good fit to the data. We conclude that in highly connected floodplain wetlands the direct effect of flooding supersedes the influence of water and sediment quality in structuring vegetation assemblages. Yet where flooding is less intense, these environmental variables resume their structuring role.

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Section: Discussionmentioning

confidence: 99%

“…The four species of Chara (assemblage three) found in British Columbia collectively span a broad range of salinity preferences (Klinkenberg 2012) but all thrive in alkaline waters (Wade 1990), explaining why assemblage three responded differently to CaCO 3 and SO 4 2− (Fig. 2).…”

Section: Discussionmentioning

confidence: 99%

River Connectivity Affects Submerged and Floating Aquatic Vegetation in Floodplain Wetlands

2013

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“…In dam reservoir, among submerged vegetation characeans were noted. These plants are usually the pioneer community in newly created habitats [39]. However, in July 2008, due to high P loadings (4.5-6.0 g m -2 of P-PO 4 and 7.5 g m -2 of TP), in dam reservoir there were observed algal blooms (biomass of phytoplankton exceeded 30 mg MM dm -3 ) and high decrease of water transparency (Secchi disc visibility reached only 0.4 m).…”

Section: Structure Of Macrophytesmentioning

confidence: 99%

Effect of Phosphorous Loadings on Macrophytes Structure and Trophic State of Dam Reservoir on a Small Lowland River (Eastern Poland)

Tarkowska‐Kukuryk¹

2013

Archives of Environmental Protection

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Abstract:The main objective of the study was to evaluate if macrophytes structure and trophic status of dam reservoir Kraśnik on a small lowland river Wyżnica are determined by phosphorous loadings. Studies were conducted seasonally in May, July and October during the years 2008-2009. Samples were taken at four sites: Site 1 -infl ow of the Wyżnica River to pre-dam, Site 2 − pre-dam, Site 3 − dam reservoir and Site 4 -outfl ow of the Wyżnica River from dam reservoir. Physical and chemical parameters (temperature, Secchi disc depth, dissolved oxygen, pH, conductivity, total suspension, chlorophyll-a, TP and P-PO 4 ) were measured in water samples. Together with water parameters there were estimated biomass of phytoplankton and species composition and biomass of emergent, fl oating-leaved and submerged macrophytes. Concentrations of TP, chlorophyll-a and Secchi disc depth were used to calculate trophic state index of Carlsson for dam reservoir and its pre-dam. Based on mean water current, mean residence time of water in dam reservoir and concentrations of TP and P-PO 4 loadings (g m -2 ) fl owing into dam reservoir with the Wyżnica River were calculated. The results showed visible negative effect of phosphorous loadings on both macrophytes composition and trophic state of the reservoir. The marked changes concerned soft vegetation. High P loadings (7.74 g m -2 of TP and 6.03 g m

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“…Charophytes, macroscopic green algae from the extant family Characeae (Charales, Charophyta), occur in different water environments all over the world except for Antarctic regions (e.g., Hutchinson, 1975;Wade, 1990). However, they prefer freshwater calcium-rich lakes with oligo-and mesotrophic waters (Krause, 1981) and inhabit both deep and shallow sites (e.g., Martin et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Oxygen stable isotope composition of carbonate encrustations of two modern, widely distributed, morphologically different charophyte species

et al. 2017

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The colonisation of disturbed freshwater habitats byCharaceae

Cited by 50 publications

References 7 publications

River Connectivity Affects Submerged and Floating Aquatic Vegetation in Floodplain Wetlands

River Connectivity Affects Submerged and Floating Aquatic Vegetation in Floodplain Wetlands

Effect of Phosphorous Loadings on Macrophytes Structure and Trophic State of Dam Reservoir on a Small Lowland River (Eastern Poland)

Oxygen stable isotope composition of carbonate encrustations of two modern, widely distributed, morphologically different charophyte species

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