Substrate selection and seasonal variation in densities of invertebrates in stream pools of a tropical river

Arunachalam, M.; Nair, K.C. Madhusoodanan; Vijverberg, J.; Kortmulder, K.; Suriyanarayanan, H.

doi:10.1007/bf00015000

Cited by 43 publications

(24 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Several authors have indeed confirmed the prominent role of detritus in the distribution, and density of invertebrates. ARUNACHALAM et al, (1991) reported higher densities of invertebrates in leaf packs and in shallow areas of a river. In a manipulative experiment with baskets containing sediments differing in heterogeneity and detritus content, WILLIAMS, (1980) showed that higher biomass and numbers of invertebrates were attained in treatments with more detritus, independently of substratum heterogeneity.…”

Section: Discussionmentioning

confidence: 97%

“…These conditions are likely to change at a scale of only a few metres or centimetres. At this small scale, factors indicated as regulating macroinvertebrate distribution and richness are current velocity, substratum particle size (MARCHANT et al, 1985;WILLIAMS and MOORE, 1986;ARUNACHALAM et al, 1991), substratum stability (MALMQVIST and OTTO, 1987), organic matter in the substratum (WILLIAMS and MOORE, 1986), the spatial heterogeneity of the habitat (DOWNES et al 1995) and sediment grain size and heterogeneity (WILLIAMS, 1980;GAYRAUD and PHILIPPE, 2001).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Factors Affecting Macroinvertebrate Richness and Diversity in Portuguese Streams: a Two‐Scale Analysis

Graça

Pinto

Cortes

et al. 2004

International Review of Hydrobiology

View full text Add to dashboard Cite

We analysed the spatial patterns in macroinvertebrate taxon richness and abundance at two scales: sampling unit and basin. We sampled 12 stream sites in three zones of Portugal, differing in climate geomorphology and water chemistry. At a sampling unit scale, substratum organic matter content, depth and the dominant size of substratum particles were correlated with numbers of taxa and individuals. We propose that the number of taxa at a small scale depends on the number of individuals, which in turn is the result of organic matter accumulation, hydrologic and substratum characteristics. The environmental parameters better explaining the large-scale biological data were temperature, minimum size of substratum particles and pH. Regardless of the relative importance of variable types and mechanisms regulating stream invertebrates along the climatic gradient, rivers from the North and Centre appeared to be richer in taxa than the typically Mediterranean streams in the South. IntroductionOne important attribute of communities is their species richness and diversity. Various mechanisms have been indicated as controlling species diversity, including productivity, habitat heterogeneity and biotic interactions (TOWNSEND, 1989;TOWNSEND et al., 2002). Rivers and their adjacent riparian zones are considered to be dynamic, complex and diverse systems (RISSER, 1990;NAIMAN et al., 1993). Benthic macroinvertebrates are an important component of the river biota. At a large scale, diversity of invertebrates along and among rivers is affected by factors such as longitudinal zonation of river abiotic conditions (VANNOTE et al., 1980;CLENAGHAN et al., 1998), channel width and catchment size (MALMQVIST and HOFFSTEN, 2000), discharge (CORTES et al., 2002), temperature and pH (TOWNSEND et al., 1983;CLARKE and SCRUTON, 1997).At a stream reach scale, invertebrates have, in general, a clumped distribution, which is assumed to be related to the mosaic of interchanging conditions in substratum, flow conditions, depth and many others (TOWNSEND, 1989;CORTES et al., 2002). These conditions are likely to change at a scale of only a few metres or centimetres. At this small scale, factors indicated as regulating macroinvertebrate distribution and richness are current velocity, substratum particle size (MARCHANT et al., 1985;WILLIAMS and MOORE, 1986;ARUNACHALAM et al., 1991), substratum stability (MALMQVIST and OTTO, 1987), organic matter in the Internat. Rev. Hydrobiol.

show abstract

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Factors Affecting Macroinvertebrate Richness and Diversity in Portuguese Streams: a Two‐Scale Analysis

Graça

Pinto

Cortes

et al. 2004

International Review of Hydrobiology

View full text Add to dashboard Cite

show abstract

“…Arunachalam et al (1991) and Flecker & Feifarek (1994), working in India and in Andean rivers respectively, have found distinct temporal variations in the abundance of aquatic invertebrate assemblages between dry and rainy periods, with great reduction in the abundance of invertebrates during periods of increased rainfall.…”

Section: Discussionmentioning

confidence: 99%

Spatial and temporal organization of aquatic insects assemblages in the longitudinal gradient of a tropical river

et al. 2001

View full text Add to dashboard Cite

The distribution and abundance of aquatic insects were studied in the longitudinal gradient of the watershed of Macaé River, a coastal Atlantic Forest river in South-eastern Brazil. Sampling stations were selected in the first, second, fourth, fifth, and sixth orders and sampled in April, July, and October 1995. This represented the end of the rainy season, the dry season, and the beginning of another rainy season, respectively. In each month four samples were collected using a Surber sampler from each of the following substrates: sand, litter deposited in pool areas, litter in riffle areas, and stones. A total of 46,431 specimens of aquatic insects belonging to ten orders were obtained. The data were analyzed by the multivariate methodologies of Correspondence Analysis (CA) and Cluster Analysis (UPGMA) using the similarity index of Morisita, for all three months. Both showed a significant faunal disrupture in the river, which can be divided in two sections: the upper one, from first to fourth orders, and the lower section, including fifth and sixth orders. The same results were obtained with presence-absence matrices, using Jaccard similarity index, showing that the changes are not only due to quantitative differences. A Mantel test was used to compare the assemblage composition temporally and no difference was detected between the three months. Moreover, a Canonical Correspondence Analysis (CCA) was applied to the data to check which of the 14 physical and chemical variables significantly explained macroinvertebrate community variation. The most significant variables were conductivity, CPOM, and pH for the upper stations (1 st , 2 nd and 4 th orders), and alkalinity, FPOM, and HCO 3 for the lower stations (5 th and 6 th orders).

show abstract

“…Accordingly, the seasonal effects on macroinvertebrate community composition are important, should not be neglected and should be taken into account for biomonitoring purposes [13,14]. In tropical, temperate and subarctic river or stream systems, seasonal variations in macroinvertebrate assemblages have been observed and well documented [8,[15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. However, most of these investigations were confined to streams or rivers in temperate and tropical areas, and subtropical rivers on the regional scale have received much less attention [31,32].…”

Section: Introductionmentioning

confidence: 99%

Temporal variations in macroinvertebrate communities from the tributaries in the Three Gorges Reservoir Catchment, China

Chi

Chen

et al. 2017

Rev. Chil. de Hist. Nat.

View full text Add to dashboard Cite

Background: The seasonal variations in macroinvertebrate communities in tropical, temperate and subarctic regions have been observed and well documented to date, but similar studies conducted in subtropical rivers at the regional scale are relatively rare. In this paper, the macroinvertebrate communities from the main tributaries in the Three Gorges Reservoir Catchment (TGRC) were investigated as a function of the four seasons to explore the temporal variations in macroinvertebrate communities and further tests the temporal stability of certain metrics that are based on macroinvertebrates under a routine bioassessment framework. Results: The taxa richness reached the highest point in spring, followed by winter, autumn and summer. The taxa Chironomidae, Heptageniidae, Corbiculidae and Baetidae dominated the communities across seasons. The temporal variations in communities were mainly reflected in the changes in taxa proportions between seasons. The percentages of the taxa Heptageniidae and Baetidae were the highest in autumn (normal discharge period) and lowest in summer (high discharge period). The abundance of macroinvertebrates was the lowest in summer, increased in autumn and winter, and then decreased in spring. Natural fluctuations of aquatic ecosystems (temporal effects) resulted in variations that were apparent in macroinvertebrate-based metrics, such as EPT%, Baetidae%, Caenidae%, Ephemerellidae% and Hydropsychidae%. Conclusions:The results of our study demonstrated that the macroinvertebrate communities in the main tributaries of the TGRC varied as a function of seasons. This variation was fundamentally similar to the seasonal patterns in subarctic and temperate streams. Different hydro-morphological characteristics and water quality during the high discharge period (summer), low discharge period (winter) and normal discharge period (spring and autumn) strongly affected the distribution patterns of macroinvertebrate communities. Discharge variation among seasons resulted in seasonal fluctuations in the density of macroinvertebrates. In the TGRC, autumn was the important hatching period for mayflies (Ephemeroptera). The variations in metrics related to macroinvertebrates indicated that temporal effects should not be neglected under a biomonitoring framework in future studies.

show abstract

Substrate selection and seasonal variation in densities of invertebrates in stream pools of a tropical river

Cited by 43 publications

References 21 publications

Factors Affecting Macroinvertebrate Richness and Diversity in Portuguese Streams: a Two‐Scale Analysis

Factors Affecting Macroinvertebrate Richness and Diversity in Portuguese Streams: a Two‐Scale Analysis

Spatial and temporal organization of aquatic insects assemblages in the longitudinal gradient of a tropical river

Temporal variations in macroinvertebrate communities from the tributaries in the Three Gorges Reservoir Catchment, China

Contact Info

Product

Resources

About