Physical and chemical water condition in and around the area of seaweed “Lahe” (Caulerpa Sp.) growth

Research examining mayfly ecology in karst streams and rivers has increased in recent years, though microhabitat preferences remain poorly characterized. We examined mayfly assemblage taxonomy, functional feeding groups and microhabitat preferences in two contrasting lotic Dinaric karst catchments, one pristine and one anthropogenically impacted. At monthly intervals over a one-year period, all major microhabitats (i.e. dominated by boulders, cobbles, sand, silt, mosses, or angiosperms) were sampled at sites spanning springs, upper, middle and lower river reaches, and tufa barriers. In both catchments, mayfly species richness was comparable among microhabitats, while mayfly abundance was highest on mosses and lowest on silt. NMDS ordination did not group assemblages according to microhabitat type, which may reflect the greater influence of physical and chemical water properties. In both catchments and all microhabitats, mayfly assemblages were dominated by grazers/scrapers at upstream sites and by detritivores at downstream sites. Active filter feeders were more abundant in microhabitats with silt substrates and lower current velocities. This study demonstrated that certain mayfly species strongly preferred a specific microhabitat type, reflecting their water current preferences and feeding strategies, while other species shifted between microhabitats, likely in search of food resources and shelter. The results emphasize the importance of habitat heterogeneity in supporting diverse communities in karst rivers.

Download Full-text

Laju Pertumbuhan Rumput Laut Gracilaria sp Melalui Budidaya IMTA (Integrated Multi Trophic Aquaculture) di Pantai Geger, Nusa Dua, Kabupaten Badung, Bali

Journal of Marine and Aquatic Sciences ◽

10.24843/jmas.2018.v4.i02.191-203 ◽

2017 ◽

Vol 4 (2) ◽

pp. 191

Author(s):

Kadek Yudiastuti ◽

I Gusti Bagus Sila Dharma ◽

Ni Luh Putu Ria Puspitha

Keyword(s):

Water Quality ◽

Design Method ◽

Salt Water ◽

Mesh Size ◽

General Characteristic ◽

Quality Parameters ◽

Seaweed Cultivation ◽

Randomized Design ◽

Physical And Chemical ◽

Chemical Water

Gracilaria sp is red alga which belong to class rhodophyceae. It can grow in shallow salt water with a general characteristic is having a cylindrical and branched thallus form. Seaweed cultivation can be performed through IMTA (Integrated Multi Trophic Aquaculture) method. The basic principle of cultivation through the IMTA method is utilizing service of the low thropic level species in marine ecosystems, such as shells and seaweed. This method is believed to be able to overcome the environmental problems caused by cultivation activities, such as feces and uneaten feed. This research was perfomed 45 days, from February 25 to April 11, 2017. It was held at Geger Beach, Nusa Dua, Badung Regency, Bali, using a complete randomized design method that consist of three treatments and three repetition for each treatment. Treatment control (T1) consisted of 10 bunches of seaweed 100 grams without the abalone, treatement 2 (T2) consisted of 10 bunches of seaweed 100 grams and 20 abalones and treatement 3 (T3) consisted of 10 bunches of seaweed 100 grams and 40 abalones. The result showed that specific growth rate in Gracilaria sp. was highest in treatment T1, compared to treatment T2 and T3. This was caused by the cage construction of abalone amd the present of small mesh size net to cover the seaweed planting, which made the growth was not optimal. However, the use of a nets system in seaweed cultivation could minimize the loss of thallus. It was proved by the survival rate of seaweed in first, second and third, that is averagely high, ranging from 90% to 100%. Physical and chemical water quality parameters are also measured, and It showed that the water quality was suitable for the cultivation of both, seaweed and abalone.

Download Full-text

Analisa Kualitas Air Fisika dan Kimia di Danau Pampait (Physical and Chemical Water Quality Analysis in Lake Pampait)

Daun Jurnal Ilmiah Pertanian dan Kehutanan ◽

10.33084/daun.v7i1.1608 ◽

2020 ◽

Vol 7 (1) ◽

pp. 75-87

Author(s):

Ummi Suraya ◽

Lilia Lilia

Keyword(s):

Water Quality ◽

Dissolved Oxygen ◽

Aquatic Organisms ◽

Quality Analysis ◽

Middle Section ◽

Water Quality Analysis ◽

Average Temperature ◽

Physical And Chemical ◽

Chemical Water ◽

Quality Measurements

This study aims to determine the water condition of Lake Pampait, KamelohBaru Village, Sebangau District, Palangka Raya City, measured from physical and chemical water quality as a measure of the condition of the water quality in Lake Pampait. The study was conducted for approximately 2 (two) months, namely from June to July 2018. Sampling was carried out in 3 (three) stations, namely inlet (station I), middle section (station II) and outlets (station III). The physical and chemical water quality measurements are carried out directly, namely temperature, brightness, depth, pH (Degrees of Acidity) and DO (Dissolved Oxygen) while indirectly or analyzed in the laboratory are PO4 (Phosphate), NO3 (Nitrate) and NH3 (Nitrate) Ammonia). The results of research on physical and chemical water quality is an average temperature of 23.7 oC. Brightness 28.75 cm, Depth 4.25 m, Degree of Acidity (pH) with an average of 6.03, and Dissolved Oxygen (DO) 2.93 mg/L, Phosphate (PO4), Nitrate (NO3), and Ammonia (NH3) ) 0.932 mg/L, it can be concluded that Lake Pampait can be said to be still not polluted and is still considered good for the life of fish and other aquatic organisms.

Download Full-text

Water quality in two catchment areas: a case study of Crocodile (West) and Berg Catchment areas

Water Practice & Technology ◽

10.2166/wpt.2014.059 ◽

2014 ◽

Vol 9 (4) ◽

pp. 526-533

Author(s):

S. A. Akinseye ◽

J. T. Harmse

Keyword(s):

Water Quality ◽

Catchment Area ◽

Pearson Correlation ◽

Quality Parameters ◽

Water Quality Parameters ◽

Western Cape ◽

Catchment Areas ◽

Domestic Use ◽

Physical And Chemical ◽

Chemical Water

This study focuses on the different physical and chemical water quality parameters of two catchment areas centring on the extent of water pollution in the two basins. Data containing physical and chemical water quality parameters for the Crocodile (West) Catchment area (Gauteng) and the Berg Catchment area (Western Cape) at reconnaissance level of detail were collected from the Department of Water Affairs (DWA) over a period of 5 years, 2007–2011. The relevant data were screened and sorted using the SPSS Software Version 2.0. The data were subjected to ANOVA statistics to search for significant variations in the water quality parameters of concern across the study period in each of the catchment area. The physical and chemical analyses were carried out to determine whether the water quality falls within the total water quality range as prescribed by DWA and WHO for domestic use. Pearson correlation analyses were used to determine the relationship between physical and chemical water quality parameters and the rainfall data over the study period.

Download Full-text

Temporal variability of the physical and chemical water characteristics at a coastal monitoring observatory: Station ENSENADA

Continental Shelf Research ◽

10.1016/j.csr.2010.07.011 ◽

2010 ◽

Vol 30 (16) ◽

pp. 1730-1742 ◽

Cited By ~ 16

Author(s):

L. Linacre ◽

R. Durazo ◽

J.M. Hernández-Ayón ◽

F. Delgadillo-Hinojosa ◽

G. Cervantes-Díaz ◽

...

Keyword(s):

Temporal Variability ◽

Coastal Monitoring ◽

Water Characteristics ◽

Physical And Chemical ◽

Chemical Water

Download Full-text

Limacina helicina shell dissolution as an indicator of declining habitat suitability owing to ocean acidification in the California Current Ecosystem

Proceedings of The Royal Society B Biological Sciences ◽

10.1098/rspb.2014.0123 ◽

2014 ◽

Vol 281 (1785) ◽

pp. 20140123 ◽

Cited By ~ 140

Author(s):

N. Bednaršek ◽

R. A. Feely ◽

J. C. P. Reum ◽

B. Peterson ◽

J. Menkel ◽

...

Keyword(s):

Ocean Acidification ◽

Natural Environment ◽

Habitat Suitability ◽

California Current ◽

Strong Positive Correlation ◽

Near Shore ◽

Biological Impacts ◽

Biological Sampling ◽

Physical And Chemical ◽

Chemical Water

Few studies to date have demonstrated widespread biological impacts of ocean acidification (OA) under conditions currently found in the natural environment. From a combined survey of physical and chemical water properties and biological sampling along the Washington–Oregon–California coast in August 2011, we show that large portions of the shelf waters are corrosive to pteropods in the natural environment. We show a strong positive correlation between the proportion of pteropod individuals with severe shell dissolution damage and the percentage of undersaturated water in the top 100 m with respect to aragonite. We found 53% of onshore individuals and 24% of offshore individuals on average to have severe dissolution damage. Relative to pre-industrial CO 2 concentrations, the extent of undersaturated waters in the top 100 m of the water column has increased over sixfold along the California Current Ecosystem (CCE). We estimate that the incidence of severe pteropod shell dissolution owing to anthropogenic OA has doubled in near shore habitats since pre-industrial conditions across this region and is on track to triple by 2050. These results demonstrate that habitat suitability for pteropods in the coastal CCE is declining. The observed impacts represent a baseline for future observations towards understanding broader scale OA effects.

Download Full-text

DETECTION OF POLYCYCLIC AROMATIC HYDROCARBONS COMPOUNDS CONCENTRATIONS AND THEIR FATE IN TIGRIS RIVER WITHIN BAGHDAD CITY - IRAQ.

IRAQI JOURNAL OF AGRICULTURAL SCIENCES ◽

10.36103/ijas.v50ispecial.194 ◽

2019 ◽

Vol 50 (Special) ◽

Author(s):

Khalaf & et al.

Keyword(s):

Molecular Weight ◽

Anthropogenic Activities ◽

Dry Season ◽

Wet Season ◽

Tigris River ◽

Water And Sediment ◽

Polycyclic Aromatic ◽

Physical And Chemical ◽

Chemical Water

The objective of this study was to investigate concentrations, compositions of PAHs and to study physical and chemical water characteristic in Tigris River. This study was conducted during July 2017 to April 2018. The results showed that twelve PAHs compounds were detected in water and sediment of the river and the highest concentrations of these compounds were founded in sediment samples. Concentrations of PAHs in water samples have a ranged between (0.36µg. l-1) in wet season to (0.53µg.l-1) in dry season, while the sediment sample have a ranged between (633.23µg.kg-1) in wet season to (778.28µg.kg-1) in dry season. The origin of PAHs in water and sediment were pyrogenic depending on the ratios of Phenanthene/Anthracene, Anthacene/ (Anthacene + Phenanthene), low molecular weight/high molecular weight. According of these results, it can be concluded that the Tigris River is polluted with the PAHs, and anthropogenic activities with the largest impact on the water health and quality of the river.

Download Full-text

تقيم الوضع الراهن لجودة مياه مدينة بورتسودان (المصدر خور أربعات)

FES Journal of Engineering Sciences ◽

10.52981/fjes.v8i2.63 ◽

2020 ◽

Vol 8 (2) ◽

pp. 88-96

Author(s):

Mustafa SirElkhatim Mustafa

Keyword(s):

Armed Forces ◽

Quality Parameters ◽

City Network ◽

Zone Field ◽

Field Works ◽

Semi Arid Region ◽

Physical And Chemical ◽

The City ◽

Chemical Water

Port Sudan is the main port and largest commercial centre of the Sudan located in semi-arid region. Population estimate in 2010 was about 926,000 inhabitants and the water demand estimated was about 120000-150000 m3/day. Water production from Khor Arbaat is 60,000 m3/day in good years; however, it may go down to 30,000 m3/day in bad years. In general, the overall situation of the city is characterized by regular shortages. There are three dams (U/G Dam1, SPC Dam2, FR Dam3) structured on Khor Arbaat for water harvesting (2005,2000,1992), siltation represents the greatest problem to these Dams, accordingly their capacities storage is decreases. Their storage capacities are 16*106, 5*106, and 6*106 m3 respectively, therefore the small capacities of these dams lead to inflation silt in a limited period of time. In the same way the Sea Port Corporation (Dam 2) in the year 2012 was removed by the armed forces of the corps as a result of inflation silting and thickness of silting to 6 meters. Water from Khor Arbaat gets into the transfer system without any treatment. The study is carried out to assess and evaluate the quality of surface and ground water resources in the Khor Arbaat zone. Field works included three visits to the study area, on January 2018, February 2018, and on March 2018. Sixteen typical water samples collected from different locations within Khor Arbaat and the city network were analyzed for physical and chemical water quality parameters. GIS Arc. Map and Kriging method are used to study the characteristics of water depend on coordinates and samples results.

Download Full-text

Characteristics of Selected Lakes with Aeolian and Karst Genesis in the Holy Cross Region

Limnological Review ◽

10.2478/limre-2020-0007 ◽

2020 ◽

Vol 20 (2) ◽

pp. 59-64

Author(s):

Adam Choiński ◽

Artur Zieliński

Keyword(s):

Surface Waters ◽

Catchment Area ◽

High Variability ◽

Morphometric Parameters ◽

Small Surface ◽

Study Results ◽

Karst Genesis ◽

Small Surface Area ◽

Physical And Chemical ◽

Chemical Water

AbstractIn the belt of the Polish Uplands, including the Holy Cross Region, lakes occur sporadically. In some places, however, they are somewhat more abundant. They are usually objects with a small surface area. The majority of them have not been subject to thorough investigation. Therefore, the objective of the paper is the expansion of knowledge regarding these lakes. The paper among others presents the characteristics of several lakes with aeolian genesis located on the Przedbórz Upland in the catchment area of the Wierna River and in the Nida Basin near the towns of Busko-Zdrój and Pińczów. The study results determine the morphometric parameters of the lakes, also pointing to an exceptionally high variability of physical and chemical water properties, as well as the possibility of periodical disappearance of the lakes. Moreover, the study results provide a necessary and solid basis for further investigation of the lakes, which in the context of the observed increasingly serious water deficit and decrease in the level of surface waters and groundwaters is undoubtedly of high importance.

Download Full-text

The Diversity of Makrozoobenthos as Bio-Indicators of Water Quality of the River Kundur District Labuhanbatu

Budapest International Research and Critics Institute (BIRCI-Journal) Humanities and Social Sciences ◽

10.33258/birci.v4i1.1732 ◽

2021 ◽

Vol 4 (1) ◽

pp. 1027-1033

Author(s):

Winarti Winarti ◽

Arman Harahap

Keyword(s):

Total Abundance ◽

Chemical Parameters ◽

Observation Station ◽

Physical Chemical ◽

Physico Chemical ◽

Physical And Chemical Parameters ◽

The Individual ◽

Physical And Chemical ◽

Chemical Water

Macrozoobenthos used as a bioindicator of the waters, this happens because of the nature of the benthos which has mpergerakan low so it got a lot of influence from the environment. This study aims to determine the condition of the river Kundur with a view the community structure of macrozoobenthos which include: species composition, abundance, diversity, uniformity and dominance as well as the physical and chemical parameters of water as a paremeter supporters. Based on the results of observations, macrozoobenthos were found during the study in the river Kundur consists of 3 phylum, 4 classes, 17 family with 11 species. The composition of the class of macrozoobenthos in the whole of the observation station consists of a Gastropod (37%), Insecta (23%), Malacostraca (20%), Polychaeta (10%) dan Malacostraca (20%). The value of an abundance ranged from 325,7 - 3309,6 ind/m3. With the value of the total abundance at Station I which is equal to 3690,1 ind/m3, Station II 3723,1 ind/m3, Station III 3692,3 ind/m3 can be categorized diversity are light polluted with the value of the index of uniformity (E) that describes the spread of the individual tends to be uniform or relatively the same. While the condition of the physical-chemical parameters and the substrate bottom of the river Kundur in general has a range of relatively homogeneous, spread evenly throughout the observation stations and still be able to support life macrozoobenthos. To the results of measurements of the parameters of physico-chemical water and substrate in the river kundur in general has a range of relatively homogeneous in the whole observation stations and still be able to support the life of the macrozoobenthos.

Download Full-text