Structure, distribution patterns and ecological responses to hydrological changes in benthic macroinvertebrate assemblages in a regulated semi-arid river: baseline for biomonitoring studies

Leiva, Marta; Marchese, Mercedes; Diodato, L.

doi:10.1071/mf19283

Cited by 6 publications

(1 citation statement)

References 64 publications

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“…En cuanto a los resultados obtenidos, la relación entre las densidades de oligoquetos y quironómidos y la relación de las densidades total de invertebrados y de Limnodrilus hoffmeisteri indicaron un aumento de oligoquetos y la dominancia de L. hoffmeisteri en los sitios más perturbados y enriquecidos orgánicamente (ya sea de origen natural o antropogénico). Otros estudios en la región incluyendo distintos tipos de ambientes aplicaron análisis multivariados para discriminar gradientes de perturbación (Marchese and Ezcurra de Drago 1999;Pavé and Marchese 2005;Leiva et al 2020). En trabajos más recientes se evaluó el efecto del ganado sobre los invertebrados bentónicos y el proceso de enriquecimiento con materia orgánica en ambientes de la llanura aluvial del río Paraná (Mesa et al 2016).…”

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Biomonitoreo en ríos de la Argentina: Un camino por recorrer

Domínguez¹,

Encalada²,

Fernández³

et al. 2021

Ecol. Austral

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R��.Se describe la secuencia histórica de la aplicación de organismos acuáticos bioindicadores en la Argentina y sus posibilidades de ser difundidos e incorporados como herramientas de biomonitoreo en la gestión ambiental. En paralelo, se presenta el desarrollo y las etapas acaecidas en Ecuador y en España. Tanto las distintas regiones de la Argentina como los países mencionados siguieron trayectorias semejantes; primero, aplicando índices usados en otros países, y luego adaptándolos a la flora y la fauna locales, o bien reformulándolos para cada uno de los paisajes. Los índices aplicados dependieron de cada ecorregión y del impacto que se pretendía evaluar. En todos los casos, la transferencia a la gestión se realizó de un modo lento y no regular o planificado, excepto cuando existía alguna normativa que obligaba a su aplicación. Se concluye que actualmente en la Argentina existen numerosos grupos con experiencia en el empleo de bioindicadores en ambientes fluviales, pero hay una falencia a nivel de normativas que hace que su incorporación al monitoreo sea lento, optativo y poco comparable entre cuencas. De la experiencia de otros países se desprende que sería necesario aplicar normas específicas. Como no es posible desarrollar un único índice para todo el país, para lograr una evaluación estandarizada se torna indispensable establecer sistemas de intercalibración y comparación entre los distintos índices empleados. En ese sentido, la red REM AQUA podría contribuir a diseñar, realizar y difundir este tipo de comparaciones.[Palabras clave: ambientes fluviales, bioindicadores, aplicación a la gestión] A��. Biomonitoring in rivers in Argentina: A way to go. We describe the historic sequence of the application of aquatic bioindicators in Argentina and the feasibility for being disseminated and incorporated as biomonitoring tools in environmental management. In parallel, we present the development and stages followed in Ecuador and Spain. Indices from other countries were first applied, and these were later adapted to the local flora and fauna or reformulated different ecoregions. The indices applied depended on each ecoregion and on the impact to evaluate. The transfer to management was carried out in all cases in a slow and not regular or planned way, except when there were some regulations that forced its application. We conclude that, currently, there are numerous groups in Argentina with expertise in the use of bioindicators in riverine environments. Still, there is a weakness at the regulatory level that makes their incorporation to monitoring studies slow, optional, and not comparative between basins. From the experience of other countries, it appears that the application of specific standards would be necessary. As it is not possible to develop a single index, it becomes essential to establish inter-calibration and inter-comparison procedures among different indices applied to standardize the evaluation at the whole country level. In this sense, the REM AQUA network may contribute to design, apply an...

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Section: ₂₃₃unclassified

Biomonitoreo en ríos de la Argentina: Un camino por recorrer

Domínguez¹,

Encalada²,

Fernández³

et al. 2021

Ecol. Austral

Self Cite

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Impacts of habitat alteration on macroinvertebrates in large shallow lakes: An application of a macroinvertebrate‐based multimetric index

Li,

Cai,

Zhang

et al. 2024

Integr Envir Assess & Manag

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Habitat plays a crucial role in shaping the macroinvertebrate community structure in large shallow lakes. In the pursuit of improving the health of freshwater ecosystems, it is imperative to consider their habitat characteristics. To evaluate the impact of habitat variations on lake ecological health, we developed a macroinvertebrate‐based multimetric index (MMI) for both the pelagic and littoral zones of Lake Hongze. Additionally, we employed structural equation models to explore the influence of utilization or phytoplankton biomass on ecological health. Historical data served as reference conditions for the pelagic. Seven key attributes were selected for the pelagic MMI, that is, Biological Monitoring Working Party (BMWP), the percentage of Mollusca taxa, the percentage of filter‐collector taxa, the percentage of predator taxa, the percentage of gather‐collector taxa, and the percentage of sensitive taxa and functional dispersion. The least minimally disturbed conditions and the best attainable conditions were used to develop the littoral. Four key metrics, that is, the percentage of scraper abundance, Mollusca taxa, Biological Pollution Index, and BMWP, were integrated into the littoral MMI. The assessment based on MMI revealed a “poor” health status for the pelagic zone and a “fair” health status for the littoral zone. These findings underscore the high applicability and efficacy of MMIs in assessing and monitoring ecological health in Lake Hongze. Notably, functional feeding groups exhibited heightened sensitivity to disturbance in both zones. Moreover, sediment organic matter strongly influenced the pelagic ecological health, while chlorophyll a and transparency emerged as primary factors influencing the littoral zone, attributable to varying littoral zone utilization. Integr Environ Assess Manag 2024;00:1–11. © 2024 SETAC

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