Aquatic insect communities in headwater streams of Ciliwung River watershed, West Java, Indonesia

Abstract

Abstract. Wakhid, Rauf A, Krisanti M, Sumertajaya IM, Maryana N. 2021. Aquatic insect communities in headwater streams of Ciliwung River watershed, West Java, Indonesia. Biodiversitas 22: 30-41. Ciliwung is one of the major rivers flowing from Cisarua (Bogor) to Jakarta. This study was conducted to assess and compare aquatic insect biodiversity and community structure in various headwater streams with respect to different land-use types. Ten stream reaches of the first and second orders representing three different land-use types in the surrounding area (forest, tea plantation, village) were selected. At each stream reach, the aquatic insects were collected using a D-net (0.4 mm mesh). Physico-chemical properties of water were directly measured in the field. Samples were collected every two months from April until December 2018. A total of 26531 aquatic insect specimens belonging to 75 species/morphospecies, 46 families, and 10 orders were recorded. The order Trichoptera was the most abundant comprising 51.28% of the total collected insects, followed by Diptera (30.5%), Ephemeroptera (7.52%), and Plecoptera (6.25%). The highest proportion of functional feeding group was filtering-collectors (61.34%), followed by shredders (16.29%), gathering-collectors (15.32%), and predators (6.94%). Abundance of Diptera and Plecoptera was significantly higher in forest streams, while Ephemeroptera in plantation streams, and Trichoptera in village streams. The peak population of Diptera, Ephemeroptera, and Trichoptera occurred in June (dry period), while Plecoptera in December (wet period). The forest streams exhibited the highest species richness and diversity. Analysis of similarity (ANOSIM) showed a low dissimilarity among streams of the three land uses (Global R=0.217; P<0.001). The non-metric multidimensional scaling (NMDS) analysis showed that forest streams somewhat separated from plantation and village streams. The study provided important information on aquatic insect biodiversity, and indicated the need for forest area preservation in the headwater streams of Ciliwung River watershed.

Taxonomic and functional diversity of aquatic macroinvertebrate from natural forest as reference for streams health indicators in Lasolo Watershed, Southeast Sulawesi, Indonesia

“…Biological monitoring integrates the physical, chemical, and biological conditions of aquatic ecosystems (Forio and Goethals 2020;Sumudumali and Jayawardana 2021). In the last five years, the development of benthic invertebrates as a tool for environmental assessment has been widely applied to stream/river ecosystems in various countries, including Indonesia (Kahirun et al 2019;Hamid et al 2021;Harahap et al 2021;Wakhid et al 2021;Badjoeri and Samir 2022;Ilmi et al 2023;Prakoso et al 2023;Retnaningdyah et al 2023). However, to determine an index or metric suitable for bioassessment in a particular climatic region, it is necessary to validate its performance.…”

Diversity and composition of butterflies in three habitats around Rayow Waterfall, Minahasa District, North Sulawesi, Indonesia

“…Furthermore, principal component analysis (PCA) between environmental factors (independent variable) and sampling location (dependent variable) was performed to determine the relationship. Paleontological Statistics software (PAST software 3.10) was used to analyze ANOSIM, NMDS, and PCA (Cuartas-Hernández and Gómez-Murillo 2015; Wakhid et al 2021).…”

Benthic macroinvertebrates as bioindicators to detect the level of water pollution in the upstream segment of Brantas River Watershed in Malang, East Java, Indonesia

“…A Surber Bottom Sampler with a mesh size of 0.5 mm, measuring 30 cm by 30 cm, was used to collect macroinvertebrate samples. At each sampling point, ten subsamples were collected within a stretch of approximately 20 m, with each subsample being approximately 1 m away from each other (Wakhid et al 2021). The front of the Surber Bottom Sampler enters the substrate ±10 cm after being oriented to face the opposite direction of the river current.…”