Environmental effects on macrophyte assemblages of small and medium-sized rivers in two bioregions of Central Europe

Baláži, Peter; Hrivnák, Richard

doi:10.1080/23818107.2017.1344136

Cited by 1 publication

(1 citation statement)

References 32 publications

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“…Taking into consideration that the development of macrophytes assemblages strongly depends on a variety of abiotic and biotic factors and it is assumed that the most important of them are nutrient concentrations (Dodkins et al 2012;Robach et al 1996;Schneider et al2000;Szoszkiewicz et al 2006;Thiebaut et al 2002;Whitton 1975), and hydromorphological characteristics, such as altitude, flow velocity, water depth, width of river bed and type of substrate (Baláži and Hrivnák 2017), the overall purpose of this paper is to investigate the influence of localized hydromorphological differentiation for the bioindication of macrophytes in Mediterranean countries. In particular, we focus on the following question: Is there evidence of a role of hydromorphological differentiation in the diversity of macrophyte taxa included in Mediterranean indices?…”

Section: Introductionmentioning

confidence: 99%

Impact of hydromorphological pressures on the macrophytes bioindicators of the ecological water quality in Mediterranean rivers

Abdellah¹,

Saad²

2019

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One of the important tools to evaluate the ecological quality of surface water is the Macrophytes indices based on the bioindication capacity of aquatic plants. In Mediterranean rivers (France, Spain, and Portugal), the development of some macrophytes indices like l’Indice Biologique Macrophytes Rivières (IBMR), the biological metric score (BMS), as well as the Fluvial Macrophyte Index (IMF) are founded on the determination of the indicator values of the floristic reference lists. The aim of this study was to test the impact of the eco-Mediterranean differences (from one country to another) on the indicator taxa by comparing the indicator values of the Euro‐ Mediterranean macrophyte indices. With this in mind, we explore the possibility of the introduction of the Euro‐Mediterranean macrophytes-based indices in Morocco (i.e. the hydrological basin of Sebou (HBS)) as a part of a preliminary attempt to develop the first Afro-Mediterranean macrophyte index. We confirm that the ecological amplitude and species optima vary between Mediterranean ecoregions, and indicator taxa differ between countries: There are medium to small correlations between Mediterranean indices: IBMR/BMS (p = 0.000, R2 = 0.57), IMF/BMS (p = 0.000, R2 = 0.34), and IBMR/IMF (p = 0.000, R2 = 0.30). Five species exhibit major differences in indicator values: Zannichelliapalustris and Potamogetonpectinatus have more eutrophic indicator values in France (IBMR) than in Spain (IMF). Potamogetonnodosus, Amblystegiumriparium and Lycopuseuropaeus have broader ecological amplitudes in Portugal (BMS) than in France (IBMR) and in Spain (IMF), where it is restricted to eutrophic conditions. Furthermore, the three indicator systems include different indicator-taxon numbers. The comparison of the HBS elaborated list with the Euro‐Mediterranean indices revealed the low level of common taxa approximately 6.76% of all indicator species used in the French index (IBMR), 10.48% in the Portuguese index (IMF) and 12.38% in the Spanish index (BMS). These results show the inadequacy of the trophic indices approach with the HBS conditions and thus the need for the development of an index based on biotic indices approach.

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Section: Introductionmentioning

confidence: 99%

Impact of hydromorphological pressures on the macrophytes bioindicators of the ecological water quality in Mediterranean rivers

Abdellah¹,

Saad²

2019

View full text Add to dashboard Cite

show abstract

Environmental effects on macrophyte assemblages of small and medium-sized rivers in two bioregions of Central Europe

Cited by 1 publication

References 32 publications

Impact of hydromorphological pressures on the macrophytes bioindicators of the ecological water quality in Mediterranean rivers

Impact of hydromorphological pressures on the macrophytes bioindicators of the ecological water quality in Mediterranean rivers

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