Diversity and Distribution of Aquatic Insects in Streams of the Mae Klong Watershed, Western Thailand

Abstract

The distribution and diversity of aquatic insects and water quality variables were studied among three streams of the Mae Klong Watershed. In each stream, two sites were sampled. Aquatic insects and water quality variables were randomly sampled seven times in February, May, September, and December 2010 and in January, April, and May 2011. Overall, 11,153 individuals belonging to 64 families and nine orders were examined. Among the aquatic insects collected from the three streams, the order Trichoptera was most diverse in number of individuals, followed by Ephemeroptera, Hemiptera, Odonata, Coleoptera, Diptera, Plecoptera, Megaloptera, and Lepidoptera. The highest Shannon index of diversity of 2.934 and 3.2 was recorded in Huai Kayeng stream and the lowest was in Huai Pakkok stream (2.68 and 2.62). The high diversity of insect fauna in streams is an indication of larger microhabitat diversity and better water quality conditions prevailing in the streams. The evenness value was recorded as high in most sites. The high species diversity and evenness in almost all sites indicated good water quality.

Descriptions of larvae of four species of Hydropsyche (Hydropsychidae: Trichoptera) from Thailand

“…Distribution, biology and habitat of Hydropsyche dolosa, H. brontes, H. camillus, and H. napaea. The specimens were collected in small and medium sized streams from a second to third order section river in the Mae 0.32-1.31 mg/L, and water turbidity ranged 4.11-31.7 NTU (Maneechan & Prommi 2015). The stream substrate consisted of boulders, cobbles, pebbles, and gravel.…”

Evaluasi Rehabilitasi Riparian Sungai Ranggeh dengan Indikator Komunitas Makrozoobenthos

“…Organisme makrozoobentos sering digunakan sebagai indikator untuk memantau kualitas perairan akibat pencemaran, sedimentasi (Maneechan & Prommi, 2015), maupun evaluasi suksesnya rehabilitasi habitat (Besacier-Monbertrand et al, 2014;Miller et al, 2010). Organisme tersebut memiliki beberapa keunggulan dibandingkan biota lainnya antara lain: sifatnya yang relatif menetap, siklus hidup yang relatif panjang, sensitivitas yang bervariasi (sensitif hingga toleran), mampu mencerminkan perubahan spasial maupun temporal di perairan, dan memiliki peran penting dalam rantai makanan (trofik) (Spänhoff & Arle, 2007;Chessman, 2003;Barbour et al, 1999;Reice & Wohlenberg,1993).…”

Evaluation of land use impact on river water quality using macroinvertebrates as bioindicator in Lahumoko Watershed, Buton Island, Indonesia

“…The Shannon diversity index (H'), richness index (C), and evenness index (E) are widely used to predict aquatic environmental conditions based on the biological components (Maneechan and Prommi 2015;Patang et al 2018). The higher Shannon diversity index means, the better the quality of water: the value of H' smaller than one indicates high water pollution, between one and three moderate pollutions and greater than four no pollution (Wilhm and Dorris 1968).…”

“…The significant positive correlations were observed between dissolved oxygen, dominant families (Heptageniidae, Goeridae, Atyidae, Agridae, Thiaridae, Amphipterygidae, Cordullidae, and Tipulidae), biodiversity parameters (total individuals, H'Max, and R'Margalef) and station locations (LM1, LM2, and LM3). Dissolved oxygen plays a very important role in the survival of aquatic macroinvertebrates because aquatic organisms use oxygen in the process of respiration (Maneechan and Prommi 2015;Prommi and Payakka 2015;Shafie et al 2017). The high amount of dissolved oxygen in the upstream area was caused by the dominant forest cover (Zhang et al 2013;Ambarita et al 2016).…”