Unravelling the effects of multiple stressors on diatom and macroinvertebrate communities in European river basins using structural and functional approaches

Castro-Català, Núria De; Dolédec, Sylvain; Kalogianni, Elenni; Skoulikidis, Nikolaos Th.; Paunović, Momír; Vasiljević, Božica; Sabater, Sergi; Tornés, Elisabet; Muñoz, Isabel

doi:10.1016/j.scitotenv.2020.140543

Cited by 30 publications

(16 citation statements)

References 84 publications

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“…The results also demonstrated the complex relations between community structures and functions. Particularly, the analysis suggested that the decrease of species richness, and more generally of taxonomic diversity, corresponds to loss in functional richness (i.e., the number of biological/functional traits observed), as also found by De Castro-Català et al [25], but not in other functional indices. While it is intuitive that a larger number of taxa delivers a larger range of functions, the loss in species richness does not necessary implies an uneven distribution of functional attributes, a dimension computed in both functional evenness (FEve) and Rao quadratic entropy (RaoQ) indices.…”

Section: Discussionsupporting

confidence: 61%

“…They found that human stressors, such as streamflow alteration and pollutants, affect the community composition but not the diversity. Functional attributes were investigated by De Castro-Català et al [25] in the Adige and others two European rivers, where common trends were observed. Particularly, functional and structural indices were significantly correlated, and taxa richness was found to be the best predictor for pesticide concentrations.…”

Section: Introductionmentioning

confidence: 99%

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Structural and Functional Variations of the Macrobenthic Community of the Adige Basin along the River Continuum

Gaglio,

Aschonitis,

Muresan

et al. 2021

Water

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Since the publication of the River Continuum Concept (RCC), the capacity of the longitudinal dimension to predict the distribution of species and ecological functions in river networks was discussed by different river theories. The taxonomic structures and functional attributes of macrobenthic communities were investigated along the river continuum in the river Adige network (Northern Italy), with the aim to test the reliability of RCC theory and clarify the relation between structural and functional features in lotic systems. Distance from the spring was found to be most representative proxy among environmental parameters. The analysis highlighted the decrease of biodiversity levels along the river continuum. The decrease of taxonomic diversity corresponded to the loss in functional richness. The abundances of predator and walker taxa, as well as semelparous organisms, declined along the longitudinal gradient, suggesting variations in community complexity and granulometry. Regression models also depicted the presence of disturbed communities in the central section of the basin, where intensive agricultural activities occur, that affected environmental gradients. Overall, results offered evidences that the river continuum may predict macrobenthic community structures in terms of taxonomic diversity, thus confirming the general validity of RCC. Nonetheless, the functional analysis did not provide equally clear evidences to support the theory. After four decades from its postulation, the RCC is still a reliable model to predict the general macroinvertebrates distribution. However, community functions may respond to a number of local factors not considered in RCC, which could find a declination in other theories. The relations between structural and functional features confirmed to be complex and sensitive to disturbances and local conditions.

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Section: Discussionsupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Structural and Functional Variations of the Macrobenthic Community of the Adige Basin along the River Continuum

Gaglio,

Aschonitis,

Muresan

et al. 2021

Water

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“…The structure of benthic macroinvertebrate communities is characteristic of human activities in disturbed places (impacted habitats, landforms, and hydrodynamics modifications) [ 48 , 49 , 50 ]. The density and specific diversity of the groups Ephemeroptera, Plecoptera and Trichoptera are small if compared to other Carpathian rivers of the same type [ 44 , 51 , 52 , 53 , 54 ].…”

Section: Resultsmentioning

confidence: 99%

Proposed Environmental Risk Management Elements in a Carpathian Valley Basin, within the Roşia Montană European Historical Mining Area

Bănăduc

Curtean–Bănăduc

Cianfaglione

et al. 2021

IJERPH

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Non-ferrous metals mining activities have long accompanied people, and began in the study area of South East Europe over 2000 years ago. The environment quality is significantly affected by both historic mining activities and contemporary impacts. All these problems, inducing synergic negative effects on local organism communities, have created a chronic state of pollution. The Corna Valley has one of the oldest historical human impacts in Romania due to the influence of mining. Fish and benthic macroinvertebrates have exhibited significant responses to long term mining effects on lotic systems. The analysis of macroinvertebrate communities, correlated with the lack of fish and some biotope characteristics, indicates that the Corna River presents a variety of categories of ecological status between sectors. The lack of fish reveals the poor ecological conditions. Technical and management solutions are proposed here to diminish the historical environmental problems and to avoid future ecological accidents, especially in an attempt to improve any construction plan concerning a possible new de-cyanidation dam and lake. Fish and benthic macroinvertebrates have exhibited significant responses to long term mining effects on lotic systems. Two management zones were identified, an upper zone which can be used as a reference area and a lower zone, where pollution remedial activities are proposed.

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“…As shown for other stressors [114], trait-based approaches can be useful tools to obtain a more mechanistic understanding of how FS impacts the structure and function of freshwater communities [75] since they focus on the functional roles of species within the ecosystem rather than their identities (e.g., litter decomposition [39]). Traits associated with tolerating osmotic stress, such as short lifespan, high number of generations per year, dormancy, plastron respiration, or ovoviviparity, might be beneficial for coping with FS (see traits listed in [59,115]).…”

Section: Open Accessmentioning

confidence: 99%

Freshwater salinisation: a research agenda for a saltier world

Cunillera‐Montcusí

Beklioğlu

Cañedo‐Argüelles

et al. 2022

Trends in Ecology & Evolution

129

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Unravelling the effects of multiple stressors on diatom and macroinvertebrate communities in European river basins using structural and functional approaches

Cited by 30 publications

References 84 publications

Structural and Functional Variations of the Macrobenthic Community of the Adige Basin along the River Continuum

Structural and Functional Variations of the Macrobenthic Community of the Adige Basin along the River Continuum

Proposed Environmental Risk Management Elements in a Carpathian Valley Basin, within the Roşia Montană European Historical Mining Area

Freshwater salinisation: a research agenda for a saltier world

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