scholarly journals The determinant factors for macroinvertebrate assemblages in a recreational river in Negeri Sembilan, Malaysia

2021 ◽  
Vol 193 (7) ◽  
Author(s):  
Mohd Noorazhan Azis ◽  
Azlan Abas
Keyword(s):  
Water Quality ◽  
Watershed Management ◽  
Quality Measurement ◽  
Landscape Design ◽  
Egg Laying ◽  
Distribution Analysis ◽  
Macroinvertebrate Assemblages ◽  
Determinant Factors ◽  
The Relationship ◽  
Water Quality Measurement

AbstractThe determinant factors for macroinvertebrate assemblages in river ecosystems are varied and are unique and specific to the type of macroinvertebrate family. This study aims to assess the determinant factors for macroinvertebrate assemblages in a recreational river. The study was conducted on the Ulu Bendul River, Negeri Sembilan, Malaysia. A total of ten sampling stations were selected. The research methodology included (1) water quality measurement, (2) habitat characterization, and (3) macroinvertebrate identification and distribution analysis. The statistical analysis used in this study was canonical correspondence analysis (CCA) to represent the relationship between the environmental factors and macroinvertebrate assemblages in the recreational river. This study found that most of the families of macroinvertebrates were very dependent on the temperature, DO, NH3-N, type of riverbed, etc. All of these factors are important for the survival of the particular type of macroinvertebrate, plus they are also important for selecting egg-laying areas and providing suitable conditions for the larvae to grow. This study advises that improved landscape design for watershed management be implemented in order to enhance water quality and physical habitats, and hence the protection and recovery of the macroinvertebrate biodiversity.

scholarly journals PENGARUH BUDIDAYA RUMPUT LAUT TERHADAP MAKROZOOBENTOS YANG BERASOSIASI DENGAN LAMUN DI DESA PUNAGA, KEC. MANGARA BOMBANG, KAB. TAKALAR

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Ratnawati Ratnawati ◽  
Haliah Batau
Keyword(s):  
Water Quality ◽  
Laboratory Data ◽  
Negative Relationship ◽  
Quality Measurement ◽  
Regression Result ◽  
Marine Biota ◽  
Seaweed Cultivation ◽  
Seagrass Cover ◽  
The Relationship ◽  
Water Quality Measurement

Seagrass beds important for habitats for various marine biota, improve marine sediments and can recycle nutrients (NH4, P, N) so that can be utilized by other biota including seaweed. Water quality can directly affect the life of the aquatic biota especially macrozoobentos. Therefore, this study was conducted to determine the effect of seaweed cultivation on the presence of macrozoobenthos associated with seagrass bed. The method in this research is survey. Data obtained and collected through seagrass observation, macrozoobentos observation, and water quality measurement in the field and then continued with sediment and water analysis in the laboratory. Data on the relationship between seaweed cultivation and macrozoobenthos density were made by linear regression. Result of correlation test between macrozoobenthos density to seagrass cover at seaweed cultivation and without seaweed cultivation showed different result. At the seaweed cultivation site shows a positive relationship between seagrass cover to macrozoobenthos density. Otherwise, on site without seaweed cultivation showed a negative relationship between seagrass cover to macrozoobenthos density.Key word: macrozoobenthos, seagrass, seaweed cultivation, water quality, substrat

scholarly journals In Situ Water Quality Measurements Using an Unmanned Aerial Vehicle (UAV) System

Water ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 264 ◽  
Author(s):  
◽  
◽  
◽  
Keyword(s):  
Water Quality ◽  
Open Source ◽  
Unmanned Aerial Vehicle ◽  
Quality Measurement ◽  
Quality Data ◽  
Homogeneous Distribution ◽  
Aerial Vehicle ◽  
Water Quality Measurement ◽  
Quality Measurements

An unmanned aerial vehicle-assisted water quality measurement system (UAMS) was developed for in situ surface water quality measurement. A custom-built hexacopter was equipped with an open-source electronic sensors platform to measure the temperature, electrical conductivity (EC), dissolved oxygen (DO), and pH of water. Electronic components of the system were coated with a water-resistant film, and the hexacopter was assembled with flotation equipment. The measurements were made at thirteen sampling waypoints within a 1.1 ha agricultural pond. Measurements made by an open-source multiprobe meter (OSMM) attached to the unmanned aerial vehicle (UAV) were compared to the measurements made by a commercial multiprobe meter (CMM). Percent differences between the OSMM and CMM measurements for DO, EC, pH, and temperature were 2.1 %, 3.43 %, 3.76 %, and <1.0 %, respectively. The collected water quality data was used to interpret the spatial distribution of measurements in the pond. The UAMS successfully made semiautonomous in situ water quality measurements from predetermined waypoints. Water quality maps showed homogeneous distribution of measured constituents across the pond. The concept presented in this paper can be applied to the monitoring of water quality in larger surface waterbodies.

A Survey: IoT Enable Framework for Water Quality Measurement and Distribution

2018 ◽  
Author(s):  
Shashika Lokuliyana ◽  
Anuradha Jayakody ◽  
N.B.R.P. Bandara ◽  
J.W.P. Deshapriya ◽  
P.C Kavinda ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Measurement ◽  
Water Quality Measurement
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