Current velocity as a factor in determining macroinvertebrate assemblages on wood surfaces

Schoen, John W.; Merten, Eric C.; Wellnitz, Todd

doi:10.1080/02705060.2012.739578

Cited by 12 publications

(4 citation statements)

References 13 publications

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“…Compared with the relatively longer life cycles of macroinvertebrates (Young et al, 2014), diatoms generally have shorter life cycles and may thus show more rapid trait-related changes associated with environmental changes. In addition, suitable current velocity conditions can provide resources (Schoen, Merten, & Wellnitz, 2013) and control sediment compositions (Fenoglio, Boano, Bo, Revelli, & Ridolfi, 2013) for certain species, thereby shaping the composition and abundance of macroinvertebrate communities in the Chishui River . The convex hull volume and relative to the center of niche space may largely depend on these two taxa, resulting in nonsignificant changes in functional diversity.…”

Section: Discussionmentioning

confidence: 99%

“…Organic pollution (such as measures as COD Mn ) was also proved to be an important factor for the distribution of lotic organisms in the Chishui River (Chi et al, 2017;Mao et al, 2018). In addition, suitable current velocity conditions can provide resources (Schoen, Merten, & Wellnitz, 2013) and control sediment compositions (Fenoglio, Boano, Bo, Revelli, & Ridolfi, 2013) for certain species, thereby shaping the composition and abundance of macroinvertebrate communities in the Chishui River (Wang et al, 2018). For benthic diatoms, environmental filtering through physicochemical factors drove community assembly in both seasons.…”

Section: Discussionmentioning

confidence: 99%

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Seasonal shifts in the assembly dynamics of benthic macroinvertebrate and diatom communities in a subtropical river

Wang

Tang

et al. 2020

Ecology and Evolution

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Identifying seasonal shifts in community assembly for multiple biological groups is important to help enhance our understanding of their ecological dynamics. However, such knowledge on lotic assemblages is still limited. In this study, we used biological traits and functional diversity indices in association with null model analyses to detect seasonal shifts in the community assembly mechanisms of lotic macroinvertebrates and diatoms in an unregulated subtropical river in China. We found that functional composition and functional diversity (FRic, FEve, FDis, MNN, and SDNN) showed seasonal variation for macroinvertebrate and diatom assemblages. Null models suggested that environmental filtering, competitive exclusion, and neutral process were all important community assembly mechanisms for both biological groups. However, environmental filtering had a stronger effect on spring macroinvertebrate assemblages than autumn assemblages, but the effect on diatom assemblages was the same in both seasons. Moreover, macroinvertebrate and diatom assemblages were shaped by different environmental factors. Macroinvertebrates were filtered mainly by substrate types, velocity, and COD Mn , while diatoms were mainly shaped by altitude, substrate types, and water quality. Therefore, our study showed (a) that different biological assemblages in a river system presented similarities and differences in community assembly mechanisms, (b) that multiple processes play important roles in maintaining benthic community structure, and (c) that these patterns and underlying mechanisms are seasonally variable. Thus, we highlight the importance of exploring the community assembly mechanisms of multiple biological groups, especially in different seasons, as this is crucial to improve the understanding of river community changes and their responses to environmental degradation. K E Y W O R D SChishui River, functional diversity, functional traits, lotic assemblages, null model | 693 WANG et Al.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Seasonal shifts in the assembly dynamics of benthic macroinvertebrate and diatom communities in a subtropical river

Wang

Tang

et al. 2020

Ecology and Evolution

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“…In stream Tongelreep, a preference for high-flow velocity and a grazer-scraper feeding mode were associated with large wood or the presence of hard surfaces in general. Pieces of wood that protrude into the water column are exposed to higher flow velocities than the wood pieces or leaf packs that sit on the stream bottom (Schoen et al 2013, Pilotto et al 2016) and provide hydraulic conditions suitable for colonization by invertebrates preferring high-flow areas. In addition, scrapers feed on the epixylic biofilm present on the surfaces of submerged wood (Benke and Wallace 2003).…”

Section: Sitementioning

confidence: 99%

Macroinvertebrate taxonomic and trait-based responses to large-wood reintroduction in lowland streams

et al. 2020

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This publication is made publicly available in the institutional repository of Wageningen University and Research, under the terms of article 25fa of the Dutch Copyright Act, also known as the Amendment Taverne. This has been done with explicit consent by the author.Article 25fa states that the author of a short scientific work funded either wholly or partially by Dutch public funds is entitled to make that work publicly available for no consideration following a reasonable period of time after the work was first published, provided that clear reference is made to the source of the first publication of the work.This publication is distributed under The Association of Universities in the Netherlands (VSNU) 'Article 25fa implementation' project. In this project research outputs of researchers employed by Dutch Universities that comply with the legal requirements of Article 25fa of the Dutch Copyright Act are distributed online and free of cost or other barriers in institutional repositories. Research outputs are distributed six months after their first online publication in the original published version and with proper attribution to the source of the original publication.

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“…Mientras que en las zonas con mayor turbulencia y fuerza de arrastre predominan los sustratos de mayor tamaño como el canto rodado y la roca (Leopold et al,1992). De igual forma, debido a la velocidad del agua y al tipo de sustrato se van a registrar distintos macroinvertebrados acuáticos (Degani et al, 1993;Duan, Wang, & Tian, 2008;Schoen, Merten, & Wellnitz, 2013), en este caso relacionados al limo y a la arena, según el ACC (Fig. 4B), por ejemplo, se encuentran géneros como Limnocoris sp.…”

Section: Discussionunclassified

Variación estacional y características fisicoquímicas e hidrológicas que influyen en los macroinvertebrados acuáticos, en un río tropical

Quesada-Alvarado

Umaña‐Villalobos

Springer

et al. 2020

RBT

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Introducción: La distribución de los macroinvertebrados acuáticos en los ríos puede estar determinada por el tipo del sustrato, la forma del canal del río, el régimen hidrológico y las interacciones con factores bióticos y abióticos. En Costa Rica se desconoce en gran parte de los ríos, las variaciones en la distribución de los macroinvertebrados acuáticos producto de las transiciones y consecuentes variaciones en características fisicoquímicas e hidrológicas. Objetivos: 1) Estudiar el cambio del ensamblaje de macroinvertebrados acuáticos en dos sitios dentro del cauce del Río Naranjo, durante los cuatro periodos hidrológicos del año; 2) determinar la relación entre las variables fisicoquímicas, sustrato y el caudal con el ensamblaje. Metodología: El estudio se realizó en el Río Naranjo, Costa Rica, en dos sitios de muestreo durante un año, evaluando los cuatro periodos hidrológicos del año. En cada sitio de muestreo se obtuvieron valores de velocidad y profundidad del agua, caudal, oxígeno disuelto, pH, conductividad, sulfatos, amonio, nitrato, silicatos, fosfatos y sustrato, y se obtuvo una muestra de macroinvertebrados acuáticos por cada tipo de microhábitat determinado por la velocidad del agua. Se realizó una prueba PERMANOVA de dos vías, para determinar si existe una diferencia entre la abundancia de macroinvertebrados acuáticos, por periodo y entre sitios. Se hizo un análisis de correspondencia canónica para observar la relación entre los macroinvertebrados acuáticos y los factores ambientales. Por último, se realizó una prueba de Spearman para determinar la relación positiva o negativa de las variables con los macroinvertebrados Resultados: Hubo una mayor abundancia durante la estación seca, mientras que durante la transición de la estación seca a la lluviosa se registró la menor abundancia de organismos. El ACC indicó que el primer eje presentó una relación positiva con el sustrato limo y arena, y una relación negativa para las variables velocidad de corriente y sustrato rocoso. El segundo eje presentó una relación positiva con el caudal y los nitratos, y negativa para el sustrato canto rodado. La mayoría de los organismos mostraron una respuesta negativa al aumento del flujo y los nitratos. Discusión: Conforme aumenta el caudal, aumenta la velocidad del agua y no todos los organismos registrados en el Río Naranjo cuentan con características para sobrevivir a estas condiciones. Además, la profundidad también aumenta junto con la fuerza de arrastre, provocando el movimiento de los sustratos de menor tamaño y una remoción de organismos. El aumento de nitratos puede generar una disminución de los organismos más sensibles como Plecoptera y Ephemeroptera. A pesar de las variaciones fisicoquímicas y de caudal registradas en el Río Naranjo, éstas no fueron lo suficientemente fuertes como para variar el ensamblaje de macroinvertebrados acuáticos, por lo que la cuenca por el momento no cuenta con factores estresantes que elimine organismos durante uno o varios meses del año.

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Current velocity as a factor in determining macroinvertebrate assemblages on wood surfaces

Cited by 12 publications

References 13 publications

Seasonal shifts in the assembly dynamics of benthic macroinvertebrate and diatom communities in a subtropical river

Seasonal shifts in the assembly dynamics of benthic macroinvertebrate and diatom communities in a subtropical river

Macroinvertebrate taxonomic and trait-based responses to large-wood reintroduction in lowland streams

Variación estacional y características fisicoquímicas e hidrológicas que influyen en los macroinvertebrados acuáticos, en un río tropical

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