Responses of Rock Fauna to Physical Disturbance in Two Australian Tropical Rainforest Streams

Rosser, Zoe C.; Pearson, Richard G.

doi:10.2307/1467733

Cited by 59 publications

(40 citation statements)

References 37 publications

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“…In lotic environments, in mountainous regions the increased water flow velocity during the rainy season may be considered one of the main factors determining the temporal variation in the abundance of benthic organisms (Boon et al, 1986;Flecker & Feifarek, 1994;Rosser & Pearson, 1995;. During the rainy season, sudden increases in flow caused stream bed translocation, with the consequent removal of insects and a reduction in their local abundance (Flecker & Feifarek, 1994).…”

Section: Rainfall and Abundancementioning

confidence: 99%

Ephemeroptera, Plecoptera and Trichoptera assemblages from riffles in mountain streams of Central Brazil: environmental factors influencing the distribution and abundance of immatures

Bispo

Oliveira²,

Bini³

et al. 2006

Braz. J. Biol.

128

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The influence of environmental factors on the distribution of Ephemeroptera, Plecoptera and Trichoptera (EPT) immatures was investigated in streams of the Brazilian Center-West (Serra do Pireneus, Pirenópolis, State of Goiás). The insects were sampled by lifting the stones in front of a sieve (0.5 mm mesh) and then removing the insects from both the stone and the sieve. Sampling was carried out for 1 h at 5 collection sites over a period of 14 months. Air and water temperature (°C), water velocity (m/s), discharge (m 3 /s), electric conductivity (µS/cm), pH, and rainfall (mm) were also recorded. In general, we may state that altitude, hydrologic classification (order) and vegetation cover were the most important factors explaining the distribution of Ephemeroptera, Plecoptera and Trichoptera immatures. The influence of the rainfall on the temporal variation of the abundance of insects was stronger in stream segments of medium order (3 rd , 4 th order) compared to smaller streams (first order).Keywords: Ephemeroptera, Plecoptera, Trichoptera, lotic environments, larval distribution. RESUMO Comunidades de Ephemeroptera, Plecoptera e Trichoptera em riachos de montanha do Brasil Central: fatores ambientais influenciando a distribuição e abundânciaA influência de fatores ambientais sobre a distribuição de imaturos de Ephemeroptera, Plecoptera e Trichoptera (EPT) foi investigada em riachos do Centro Oeste Brasileiro (Serra do Pireneus, Pirenópolis, Estado de Goiás). Os insetos foram amostrados lavando pedras em frente a um rede (0,5 mm de malhas) e removendo os insetos tanto das pedras quanto das redes. A amostragem foi feita durante 1 h em cinco pontos de coleta em um período de 14 meses. Temperaturas do ar e da água (°C), velocidade da água (m/s), vazão (m 3 /s), condutividade elétrica (µS/cm), pH, e precipitação pluviométrica (mm) também foram registradas. Em geral, podemos afirmar que a altitude, a classificação hidrológica (ordem) e a cobertura vegetal foram os fatores mais importantes na distribuição de imaturos de Ephemeroptera, Plecoptera e Trichoptera. A influência da precipitação pluviométrica sobre a variação temporal da abundância foi maior em trechos de ordem média (3 a , 4 a ordem) quando comparado aos menores riachos (primeira ordem).Palavras-chave: Ephemeroptera, Plecoptera, Trichoptera, ambientes lóticos, distribuição larval. 612 BISPO, P. C. et al.

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Section: Rainfall and Abundancementioning

confidence: 99%

Ephemeroptera, Plecoptera and Trichoptera assemblages from riffles in mountain streams of Central Brazil: environmental factors influencing the distribution and abundance of immatures

Bispo

Oliveira²,

Bini³

et al. 2006

Braz. J. Biol.

128

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“…Rates of faunal and biogeochemical recovery also appear to be similar and rather swift (McDowell et aI., 1996;Shivoga, 2001), reflecting the adaptations of the local biota to the prevailing disturbance regime. Inhabitants of riffles in upland streams in the tropics experience a similar range of disturbances to those in temperate zones, although the intensity of tropical storms may reduce the predictability of events compared with, say, streams fed by snowmelt (Rosser and Pearson, 1995). Streams in the aseasonal tropics may experience a significant range of disturbances on a daily basis (Yule and Pearson, 1996).…”

Section: E Responses To Natural Disturbances and Introduced Speciesmentioning

confidence: 99%

Are Tropical Streams Ecologically Different from Temperate Streams?

Boulton¹,

Boyero

Covich

et al. 2008

Tropical Stream Ecology

149

124

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“…In studies to date, frequency (Reice 1985;Robinson and Minshall 1986;Lake et al 1989;Death 1996), intensity (Boulton et al 1988;Rosser and Pearson 1995), and area of disturbance (Dudgeon 1991;Rosser and Pearson 1995) have all been manipulated separately. Accordingly, we know nothing of the potential interactions between these factors (Death and Winterbourn 1995).…”

Section: Introductionmentioning

confidence: 99%

Effects of disturbance frequency, intensity, and area on assemblages of stream macroinvertebrates

McCabe¹,

Gotelli²

2000

Oecologia

272

211

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Disturbance frequency, intensity, and areal extent may influence the effects of disturbance on biological communities. Furthermore, these three factors may have interacting effects on biological diversity. We manipulated the frequency, intensity, and area of disturbance in a full-factorial design on artificial substrates and measured responses of benthic macroinvertebrates in a northern Vermont stream. Macroinvertebrate abundance was lower in all disturbance treatments than in the undisturbed control. As in most other studies in streams, species density (number of species/sample) was lower in disturbed treatments than in undisturbed controls. However, species density is very sensitive to total abundance of a sample, which is usually reduced by disturbance. We used a rarefaction method to compare species richness based on an equivalent number of individuals. In rarefied samples, species richness was higher in all eight disturbed treatments than in the undisturbed control, with significant increases in species richness for larger areas and greater intensities of disturbance. Increases in species richness in response to disturbance were consistent within patches, among patches with similar disturbance histories, and among patches with differing disturbance histories. These results provide some support for Huston's dynamic-equilibrium model but do not support the intermediate-disturbance hypothesis. Our analyses demonstrate that species richness and species density can generate opposite patterns of community response to disturbance. The interplay of abundance, species richness, and species density has been neglected in previous tests of disturbance models.

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Responses of Rock Fauna to Physical Disturbance in Two Australian Tropical Rainforest Streams

Cited by 59 publications

References 37 publications

Ephemeroptera, Plecoptera and Trichoptera assemblages from riffles in mountain streams of Central Brazil: environmental factors influencing the distribution and abundance of immatures

Ephemeroptera, Plecoptera and Trichoptera assemblages from riffles in mountain streams of Central Brazil: environmental factors influencing the distribution and abundance of immatures

Are Tropical Streams Ecologically Different from Temperate Streams?

Effects of disturbance frequency, intensity, and area on assemblages of stream macroinvertebrates

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