Benthic Macroinvertebrate Assemblage in Bulod River, Lanao del Norte, Philippines

Abstract

Macroinvertebrates are biomonitor species in determining the water quality in freshwater bodies. Benthic macroinvertebrates were assessed in upstream, midstream and downstream of Bulod River, Tubod, Lanao del Norte, Philippines during the month of October-November 2013. The dip net method was used to collect the macroinvertebrates in each station. Identification of species was done using taxonomic keys. A total of 1198 individuals belonging to 24 families of aquatic insects, mollusks, flatworms and aquatic earthworms were identified. Aquatic insects (Class Hexapoda) mostly dominated the area which accounted 91% of the total abundance. Rarefaction analysis showed highest taxa richness in station 3. Family biotic index (FBI) indicates very good water quality in Station 1 (upstream) and Station 3 (downstream) which is evident by the presence of pollution-sensitive fauna, such as Ephemeroptera, Trichoptera and Plecoptera. The fairly poor water quality in Station 2 (midstream) indicates massive pollution due to various drastic disturbances due to agricultural and other anthropogenic activities.

Multivariate statistical approaches to benthic macroinvertebrates and water quality for farming impact assessment in Selangor River, Malaysia

“…Similar to their nding, Batissa sp., Corbicula sp., and Filopaludina sp. were also found at SR5 in this study, suggesting that these sampling sites were potentially polluted (Dacayana et al 2013).…”

“…The substrate preference for Procloeon sp. (28) and Lymnaea sp. (20) in this study conformed with the ndings of previous studies.…”

Power Consumption Modeling of Airconditioning Units in an Educational Building Using Polynomial and Neural Network Fitting Techniques

“…Only data collected during courses or office operations were used for curve fitting and analysis to correlate and model power usage with indoor temperature and air quality conditions. Five rooms with distinct purposes were chosen, including instructional facilities such as a 36-seater lecture room, a laboratory room, and a computer room, as well as office spaces with a maximum capacity of fifteen (15) people and a cubicle room designed for solo use. The operating duration of instructional classrooms normally spans from two (2) to eight (8) hours per day, whereas office spaces are frequently utilized for a period of eight (8) to ten (10) hours per day.…”

“…According to [14], about 15% to 20% of the nationwide electric power consumption is attributed to buildings, and that 49% to 51% of energy consumption in educational buildings is due to air conditioning systems [15,16]. Based on study [17], each degree setback saves 5-7% and each degree increase in ambient temperature increases consumption by 11-23%.…”

Sparsorythus sescarorum, new species from Mindoro, Philippines (Ephemeroptera, Tricorythidae)

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