Bioindicators Of Water Quality Research Articles

Species diversity of order Trichoptera (Insecta) in district Abbottabad

Caddis flies are important bio indicators of water quality. Present study was planned to explore the species diversity of insect order Trichoptera in section of River Dorr between Harno and Dhamtor of district Abbottabad, Pakistan in 2018. Four sites were selected viz. site A, B, C and D, where site A was upstream while site B, C and D was downstream and a distance of 300 meters in between all four sites. Kicking and hand picking techniques were used. Samples were collected using D-frame kick net. Samples were washed, sorted and preserved in 70% alcohol in plastic bottles. A total of 243 individuals of Trichoptera larvae were sampled belonging to five families (Hydropsychidae, Hydroptilidae, Leptoceridae, Phryganeidae, and Polycentropodidae. Hydropsychidae (37.03%), Hydroptilidae (30.86%) and Leptoceridae (29.21%) were found to be the most abundant families whereas Phryganeidae (2.46%) and Polycentropodidae (0.41%) were least encountered families. Greater species diversity of Trichoptera was observed in early-late March.

Aquatic insects as bioindicators of stream water quality - a seasonal analysis on Western Ghats river, Muthirapuzha, in central Kerala, India

This study was conducted to assess the water quality of Muthirapuzha River, Idukki using aquatic insects as bioindicators. Insects were collected on a seasonal basis from February 2014 to January 2015 from 12 sampling stations. Insects were sampled using standard collection methods and were identified up to family level. A total of 3,278 individuals belonging to seven orders and 37 families were collected during the study period. The greatest number of taxa was represented by order Ephemetroptera during monsoon (27%) and post-monsoon (25%), while Diptera (22.7%) dominated the pre-monsoon season. Shannon Weiner diversity index, Simpson dominance index, and Margalef’s richness index was highest post-monsoon. The EPT score in Muthirapuzha was for normal waters, however, pre-monsoon values were lowest, indicating pollution load during this period. Hilsenhoff’s family biotic index (HFBI) was used to estimate the status of organic pollution along the river based on representative families of aquatic entomofauna; values were highest at pre-monsoon season. The overall organic water quality level in the Muthirapuzha was good to fair based on this study.

Phytoplankton as Bioindicators of Water Quality in Kazaure Reserviour, Jigawa State, Nigeria

The present study assessed Phytoplankton as bioindicators of water quality in Kazaure reserviour, Jigawa State, Nigeria. Systematic sampling technique was employed to assess the condition of the water. The findings of the study revealed that the water condition supports the water community, comprising of thirty (30) phytoplankton species, representing four (4) major taxa in order of; Chlorophyta>Bacillariophyta>Cyanophyta> Euglenophyta . However the study identified a total of 11 pollution tolerant genera following Palmer organic pollution list including: Cyclotella sp., Gomphonema sp., Nitzchia sp., Synedra sp., Navicula sp., Scenedesmus sp., Ankistrodesmus sp., Oscillatoria sp., Euglena sp., Lepocincilis sp. and Phacus sp. The species collectively accounted for pollution index value of 29, indicating enriched water with high organic pollution, associated with warning signs of eutrophication in fresh water aquatic system. The study therefore recommends the need for sensitisation by relevant authourities to water users on the impact of contamination from detergents and others on the phytoplankton species and the overall condition of the water.

Benthic Macroinvertebrates as Bioindicators of water quality in the Copueno River, Morona- Ecuador

Benthic Macroinvertebrates as Bioindicators of water quality in the Copueno River, Morona- Ecuador

Epilithic Diatoms as Bioindicators of Water Quality in the Jimbitono River, Morona Santiago, Ecuador

Epilithic Diatoms as Bioindicators of Water Quality in the Jimbitono River, Morona Santiago, Ecuador

Eksplorasi Limnologis Telaga Dringo, Banjarnegara, Jawa Tengah

Plankton are organisms that live floating in water bodies and move with the current. Plankton is a clue organism that can be used as a bioindicator because it is sensitive to environmental changes. The purpose of this study was to explore the limnological aspects of plankton distribution and diversity as bioindicators of water quality. In this study, 29 species of phytoplankton and 20 species of zooplankton were obtained, dominated by Nitzschia sp. and Asplanchna sp. The abundance index showed that the abundance of phytoplankton was 19386.67 ind/L and zooplankton was 5.33 ind/L. Water status based on phytoplankton diversity index with a value of 0.28-1.00 is categorized as low diversity and zooplankton diversity with a value of 0.78-1.97 is categorized as moderate diversity.

Mollusca Biodiversity as A Quality Bioindicator Waters in Central Lombok Gerupuk Bay Coastal Area

Various natural resource utilization activities on the coast of Gerupuk Bay can potentially affect the quality of the aquatic environment, both biotic and abiotic, one of which is mollusc biodiversity. This study aimed to determine the relationship between the existence of Mollusca biodiversity and water quality and substrate in Gerupuk Bay. This study used a quantitative descriptive method of determining stations using the purposive sampling method based on differences in community activities at each station. Sampling was conducted at three stations, including Mollusca samples and water quality measurements: salinity, pH, temperature, and substrate. Molluscs in Gerupuk Bay found 55 species of Mollusks representing three classes, namely the Gastropoda class, with as many as 44 species incorporated in 22 Families; the Bivalve class, as many as ten species contained in 6 Families; and the Scaphopoda class, with as many as one types incorporated in 1 Family. The composition of Mollusca classes found on the Gerupuk Bay Coast is Gastropoda class at 62%, Bivalve class at 35%, and Scaphopoda class at as much as 3%. Mollusca diversity is calculated using the Shannon-Wienner diversity index (H'). The diversity index results ranged from 2.890-1.998, with moderate categories at all stations. Bioindicators of water quality using the diversity index show that stations I and III categorize the Gerupuk Bay area as lightly polluted. In contrast, at station II, it is moderately polluted.

Detailed DNA barcoding of mayflies in a small European country proved how far we are from having comprehensive barcode reference libraries.

Mayflies (Ephemeroptera) are among the crucial water and habitat quality bioindicators. However, despite their intensive long-term use in various studies, more reliable mayfly DNA barcode data have been produced in a negligible number of countries, and only ~40% of European species had been barcoded with less than 50% of families covered. Despite being carried out in a small area, our study presents the second-most species-rich DNA reference library of mayflies from Europe and the first comprehensive view from an important biodiversity hotspot such as the Western Carpathians. Within 1153 sequences, 76 morphologically determined species were recorded and added to the Barcode of Life Data System (BOLD) database. All obtained sequences were assigned to 97 BINs, 11 of which were unique and three represented species never barcoded before. Sequences of 16 species with high intraspecific variability were divided into 40 BINs, confirming the presence of cryptic lineages. Due to the low interspecific divergence and the non-existing barcoding gap, sequences of six species were assigned to three shared BINs. Delimitation analyses resulted in 79 and 107 putative species respectively. Bayesian and maximum-likelihood phylogenies confirmed the monophyly of almost all species and complexes of cryptic taxa and proved that DNA barcoding distinguishes almost all studied mayfly species. We have shown that it is still sufficient to thoroughly investigate the fauna of a small but geographically important area to enrich global databases greatly. In particular, the insights gained here transcend the local context and may have broader implications for advancing barcoding efforts.

Nitzschiatranstagensis Morales, Novais, Wetzel, Morais & Ector (Bacillariophyceae) - the second record in the Mediterranean Region.

The Mediterranean Region holds significant ecological importance, characterised by its unique climate, biodiversity and the crucial role it plays in global ecosystems. Mediterranean streams are naturally highly-stressed environments mainly due to fluctuations in water quantity. River flow generally varies from perennial to ephemeral and temporary rivers constitute significant water resources. Streams that flow through Balearic Islands are subjected to these conditions. The majority of these streams sustain water flow for 4-5 months annually, with exceptions noted for streams associated with springs, which typically maintain water throughout most of the year.Benthic diatoms are widely recognised as reliable bioindicators of water quality, used in many aquatic ecosystems. Analysing diatom communities and their biodiversity serves as a valuable tool to ensure the ecological and sustainable utilisation of water resources as well as the accurate development of guidelines for their conservation.The field of diatom taxonomy and distribution plays a crucial role in advancing our understanding of aquatic ecosystems and their biodiversity. Species of the genus Nitzschia are extensively found throughout the Mediterranean Region, including the Balearic Islands. However, they have rarely been investigated in temporary streams. This study presents the first record of Nitzschiatranstagensis Morales, Novais, Wetzel, Morais & Ector, outside the type locality and being the second record in Europe. In this study, the authors found this taxon in one temporary stream of Majorca Island, Torrent des Castellot in November 2005 (Balearic Islands). Nitzschiatranstagensis occurred at 2.6% abundance in this stream with oligotrophic waters (0.052 mg∙l-1 of nitrate), slightly alkaline pH values (7.8) and water conductivity levels of 626.5 µS cm-1. This species was recorded in the biofilm of the stones together with other taxa such as Achnanthidiumminutissimum (Kützing) Czarnecki (39.2%), Gomphonemarosenstockianum Lange-Bertalot & Reichardt (28.9%) and Halamphoraoligotraphenta (Lange-Bertalot) Levkov (20.4%). The Nitzschiatranstagensis frustules found in the examined material have similar dimensions and a higher fibulae count (8-11 in 10 μm vs. 6-10 in 10 μm) compared to the type material of Nitzschiatranstagensis. The habitat characteristics in which this species was found are described, together with LM micrographs of this taxon.

Osteoporosis and Bone Deformaties in Free-Living Geoffroy’s Toadhead Turtle (Phrynops geoffroanus) Rescued from Urban Areas in the Metropolitan Region of Recife (Pernambuco, Brazil)

Abstract Organic pollutants have bioaccumulative effects and induce a high index of toxicity in aquatic ecosystems. The aim of our study was to report tomographic abnormalities found in free-living turtles (Geoffroy`s toadhead turtle, Phrynops geoffroanus) from an urban area near the Capibaribe and Beberibe river basins in Brazil, which are known to be contaminated by heavy metals as well solid waste. Clinical and tomographic evaluation of eight turtles was performed to assess their health status for subsequent release. Tomographic analysis revealed bone abnormalities including demineralization, coarse trabecular pattern, subperiosteal bone resorption, deformity of dorsal vertebrae and shell fracture. Considering that turtles are recognized as bioindicators of water quality, a high occurrence of bone abnormalities may suggest an association with environmental pollution in the studied area and signal that conservation initiatives are needed to safeguard the aquatic ecosystem of the metropolitan region of Recife.

Quantitative modelling reservoir microalgae proliferation in response to water-soluble anions and cations influx

Atmospheric precipitation deposits acid-forming substances into surface water. However, the effects of water-soluble components on microalgae proliferation are poorly understood. This study analysed the growth characteristics of three microalgae bioindicators of water quality: Scenedesmus quadricauda, Chlorella vulgaris, and Scenedesmus obliquus, adopting on-site monitoring, culture experiments simulating 96 types of water by supplementing anions and cations, and predictive modelling. The result quantified pH > 3.0 rain with dominant Ca2+, Mg2+, and K+ cations, together with anions of NO3− and SO42−. The presence of Ca2+ of up to 0.1 mM and Mg2+ concentrations (>0.5 mM) suppressed Scenedesmus quadricauda growth. Soluble ions, luminosity, and pH had significant impacts (p ≤ 0.01) on increased microalgae proliferation. A newly proposed microalgae growth model predicted a 10.7-fold increase in cell density six days post-incubation in the case of rainfall. The modelling supports algal outbreaks and delays prediction during regional water cycles.

The effect of water temperature changes on biological water quality assessment

Increasing temperatures caused by anthropogenic climate change are leading to changes in the composition of local communities across biomes. This has implications for ecological assessment methods that rely on macroinvertebrates as bioindicators of water quality. To investigate the influence of changing water temperature on these assessment methods, we analysed macroinvertebrate data from Swiss national monitoring programs. We used a species distribution model to simulate temperature change effects on macroinvertebrate communities and estimated the resulting changes on three biological indices commonly used in Switzerland, namely the species richness of Ephemeroptera, Plecoptera and Trichoptera (EPT), the Swiss biological (IBCH) index along with its components, as well as the species at risk pesticides (SPEARpesticides) index. While results vary by temperature scenario and index, our model results for the most realistic water temperature increase scenario of + 2 °C across most sites in Switzerland suggest no, or only a minor, influence of temperature (not accounting for other hydrological changes). Our model projection predicted only a small increase in the probability of occurrence for 70 % of the studied families. The sensitivity to temperature as captured in our model is generally not very high and varies among the biological indices: on average across all sites, a + 2 °C increase in temperature resulted in a 7 % increase in EPT species richness, a 4 % increase in the IBCH index, and a less than 1 % increase in the SPEARpesticides index. Our study suggests the robustness of these biological indices to moderate warming and points towards the usefulness of these biological indices for the next few decades as tools for water quality assessment. Despite some limitations of statistical species distribution models (e.g., not accounting for dispersal limitation or biotic interactions, predictive performance varying by taxon), the study provides valuable insights into the complex relationships between environmental factors and macroinvertebrate communities, and the potential impacts of future temperature change. These findings can inform conservation and management efforts for these important ecological systems.

Aquatic Insects as Bioindicators of Water Quality in the Achenkovil River, Kerala, India.

The origin of the Achenkovil River, the Devarmalai of Western Ghats, is within the Konni reserve forest of Pathanamthitta district, flowing through Pathanamthitta, Kollam, and merging with the Pamba river in the Alappuzha district. This study included the spatial variation of aquatic insect fauna with respect to water quality. The bottom water samples and insect fauna were collected bimonthly using a Niskin sampler and D-frame nets for a period of one year (February 2019 to January 2020). The study yielded 10736 insect fauna under 8 orders, 21 families, 35 genera, and 36 species. How the quality of the water affects biodiversity of aquatic insects was examined using multivariate statistical techniques (PCA and CCA) and Pearson's correlation coefficient. The findings showed that the upstream portion of the river has a remarkable diversity and quantity of aquatic insect species. The major insect group in the collected sample was ephemeroptera. There were no pollution-sensitive taxa in the middle stream or downstream portions of the river, which suggests that the water quality was declining. The middle stream and downstream sections of the river did not contain any pollution-sensitive taxa, indicating deteriorating water quality. Human-caused factors like washing, cleaning cars, and washing cattle and disposal of garbage are common in these regions. Because most aquatic insects are sensitive to environmental fluctuations, they can be used as an efficient tool in biomonitoring studies.

Enfoque ecosistémico del cultivo semiintensivo de Penaeus vannamei

The ecosystem approach to semi-intensive culture of Penaeus vannamei is crucial for understanding and managing water quality and planktonic communities in aquaculture systems. This study focuses on analyzing the interrelationship between structural and functional elements, using phytoplankton and zooplankton as bioindicators of water quality and trophic conditions. The objective is to provide detailed information on the dynamics of these communities in culture systems, which will improve survival, feed conversion and shrimp production. A systematic review was carried out using specific keywords in relevant scientific databases, which made it possible to collect updated and relevant information on the topic. The discussion focuses on the importance of phytoplankton as a primary producer, its influence on water quality and its role in the diet of shrimp. Recommendations for maintaining a beneficial balance of phytoplankton communities in cropping systems are detailed. Furthermore, the role of zooplankton as a crucial link in the food chain is analyzed, providing recommendations on the desirable amount of zooplankton in semi-intensive farming. Strategies to address challenges related to primary productivity and food chains in culture ponds are also discussed. In conclusion, this study highlights the importance of the ecosystem approach in shrimp farming, underlining the need to understand and manage planktonic communities to achieve successful and sustainable aquaculture

Meiobenthos Community as a Description of Environmental Changes at Losari Beach, Makassar

This research aims to describe the ecological values of meiobenthos as a bioindicator of water quality at Losari Beach, Makassar. The sampling method used was the purposive sampling method. The determination of the research location was also based on previous research which described the coastal location of Losari Beach as being polluted by chemicals and dangerous metals. The research data were then analyzed statistically to calculate meiobenthos density, diversity index, and uniformity index. The research results showed that the abundance of meiobenthos found during the research was 66946 indv/m2, consisting of 12 phyla and 91 species/genus. The stations at the mouth of the Tallo River, Jeneberang River, and Tanjung Merdeka are research stations that have high abundance. The phylum oligochaeta, ostracoda, tunicata, and ciliophora are phyla with high abundance compared to other phyla. Based on the research results, it was concluded that this phylum has a high level of adaptation to the entry of various pollutants into water bodies. The diversity and uniformity index shows that the meiobenthos types in Losari are classified as having a high and even diversity index. The dominance index also shows that no single meiobenthos type is dominant, except for those in the reclamation project area. Temperature, current speed, depth, brightness, salinity, pH, DO, seawater nitrate, and seawater phosphate have a correlation or relationship with the abundance of meiobenthos on Losari Beach, Makassar.

Automated software for counting and measuring Hyalella genus using artificial intelligence

Amphipods belonging to the Hyalella genus are macroinvertebrates that inhabit aquatic environments. They are of particular interest in areas such as limnology and ecotoxicology, where data on the number of Hyalella individuals and their allometric measurements are used to assess the environmental dynamics of aquatic ecosystems. In this study, we introduce HyACS, a software tool that uses a model developed with the YOLOv3’s architecture to detect individuals, and digital image processing techniques to extract morphological metrics of the Hyalella genus. The software detects body metrics of length, arc length, maximum width, eccentricity, perimeter, and area of Hyalella individuals, using basic imaging capture equipment. The performance metrics indicate that the model developed can achieve high prediction levels, with an accuracy above 90% for the correct identification of individuals. It can perform up to four times faster than traditional visual counting methods and provide precise morphological measurements of Hyalella individuals, which may improve further studies of the species populations and enhance their use as bioindicators of water quality.

Used macroinvertebrates as bioindicators to compare water quality from different land uses in Watumokala and Nokambu Rivers, Southeast Sulawesi, Indonesia

Abstract. Kahirun, Basrudin, Siwi LO, Indriyani L, Bana S, Sudia LB, Erif LOM, Midi LO, Maulina N, Jamaluddin N. 2023. Used macroinvertebrates as bioindicators to compare water quality from different land uses in Watumokala and Nokambu Rivers, Southeast Sulawesi, Indonesia. Biodiversitas 24: 5693-5708. Macroinvertebrates are animals that live in waters, both on the surface of the water, in riverbeds attached to substrates or mud, and in several biotypes, which are used as bioindicators of water quality due to anthropogenic disturbances that can change land use around rivers. This study aimed to describe the physicochemical parameters and macroinvertebrate community in the Watumokala and Nokambu rivers in Southeast Sulawesi, Indonesia, and to compare the water quality in the two rivers based on ecological index measurements. This study used a survey method at the upstream, middle, and downstream sampling locations for each river with different land use. Data collection on macroinvertebrates and physicochemical parameters was carried out at each station in each river. The data analysis carried out in this study was to calculate the Shannon-Wienner diversity index, species abundance index, uniformity index, Margalef richness index, and the Family Biotic Index (FBI). The results of this study indicated that in the Watumokala River, there were 17 families from 9 macroinvertebrate orders with an abundance of 1852 individuals, more than in the Nokambu River where 14 families were found from 8 orders with an abundance of 904 individuals. There is an influence of land use habitat on macroinvertebrates in the Watumokala and Nokambu Rivers. In the Watumokala River station 1 and station 3 are similar and have a significant correlation with several indicators indicating that the water quality is still good, while at station 2 there is a positive correlation with physicochemical parameters which indicates that the water quality is slightly polluted. Likewise, in the Nokambu River, at station 1 and station 2, there are similarities and significant correlations between physicochemical parameters and macroinvertebrate communities in providing indicators that water quality is still good, while station 3 shows a significant correlation with physicochemical parameters and macroinvertebrates as indicators of water quality polluted. So, the results of this research are useful in efforts to manage land and water in rivers that are experiencing pollution.

Echinoderms as a Bioindicator of Water Quality of Weda Waters, Central Halmahera District

Echinoderms are deposit feeders that digest most of the sediment. Echinoderms are also good aquatic bioindicators, because Echinodermata are relatively calm or have low mobility, so they are highly influenced by environmental factors. This study aimed to determine the community structure of Echinoderms and their distribution relationship with several aquatic physico-chemical factors. Echinodermata sampling was carried out using the belt transect method using three stations. Data were collected in the form of the number of echinoderms in the transect and physico-chemical parameters of the waters including temperature, salinity, turbidity, pH, dissolved oxygen, ammonia, nitrite, and nitrate. From the results of research at three station points in the waters of Weda waters, 9 species of Echinodermata were found, namely Protoreaster nodosus, Linckia laevigata, Culcita novaeguineae, Diadema setosum, Diadema savigny, Echinometra mathaei, Tripneusteus gratilla, Holothuria atra, Holothuria edulis which were grouped into 3 classes, 4 orders, 6 families, and 7 genera with a total of 139 individuals. The diversity index of Echinodermata in Weda waters was classified as moderate with an average value of 1.05, the uniformity index was classified as moderate with an average value of 0.56, and the average dominance index value was 0.28 meaning that no species dominated

ASSESSMENT OF WATER QUALITY OF URBANIZED TERRITORIES ACCORDING TO THE STRUCTURE OF HYDROBIONT GROUPS

The paper proves the possibility of conducting water quality assessment using such an indicator as the species assemblage of Unionidae habitats for the purpose of conducting local bioindication. According to the species assemblage of Unionidae habitats, it was established that of the five analyzed sites of material collection of the main stream of the Teteriv River, in one case the water quality can be assessed as "Dirty", which corresponds to the IV water quality class, and in three cases as "Contaminated", which corresponds to the III class, and in another one - as "Good" - II class of quality. The rivers Guiva (Ivankiv), Kroshenka and Putyatinka within Zhytomyr belong to the IV class of water quality. Five more points are assigned to the II quality class (Guyva River in the area of Pryazhevo and Zarichany villages; Kam'yanka River (Zhytomyr); Kodenka River (Vertokiyivka village) and Hnylop'yat River (Berdychiv).More detailed information about the ecological state of aquatic ecosystems is provided by the use of algal communities of plankton as biological descriptors, but this approach is time-consuming. In general, the bioindication of water quality in the rivers of the Teteriv basin according to phytoplankton showed the predominance of indicators of saprobity, which correspond to the III class of water quality ("Contaminated"). Class II ("Good") indicators make up a significant share. A moderate level of organic water pollution is indicated by the predominance of eurysaprobes in the rivers. In terms of phytoplankton biomass, the Teteriv and Kroshenka rivers belong to the III class of water quality, other watercourses belong to the II class. According to the saprobity index, the water quality of the Teteriv, Putyatinka, and Kroshenka rivers is rated as satisfactory, and that of other watercourses as good. According to primary production and the ratio of production and destruction processes, watercourses were ranked into three groups - those belonging to II, III and IV water quality classes. The average values of the integral index ∑А/∑R for all watercourses, except for the Putyatinka River, are higher than 1. This indicates a positive balance of organic matter, characteristic of aquatic ecosystems with a high intensity of photosynthesis. The predominance of the heterotrophic phase in Putyatynka is most likely a response of the watercourse ecosystem to anthropogenic pressure.A comprehensive assessment of the water quality of watercourses in urbanized areas using as biological descriptors the ecological state of hydroecosystems of algae, plankton and mollusk settlements is the foundation for further ecological monitoring of waters, forecasting changes in the autotrophic and heterotrophic links of aquatic ecosystems under the influence of environmental factors.

Phytoplankton diversity as a bioindicator for water quality of siwak bay, Specific Economic Zone (SEZ) Mandalika Central Lombok

The Mandalika Specific Economic Zone (SEZ) is a potential tourism industry for the province of West Nusa Tenggara, which has recently received very high attention due to the construction of the international MotoGP circuit. The construction of the MotoGP circuit has become an attraction for domestic and foreign tourists and has increased the number of tourists. The increase in tourism activity has negatively impacted the Mandalika SEZ's coastal waters, such as a decrease in water quality, including the water of Siwak Bay. Water quality monitoring can be done by using phytoplankton as a bioindicator. The study of phytoplankton species diversity as a bioindicator of water quality has never been carried out in the Siwak Bay waters. This research was conducted to analyze the status of Siwak Bay waters based on the phytoplankton diversity index. Samplings were carried out based on a purposive sampling method. This research was conducted for three months, from March to June 2023. The study found seven classes, 59 genera, and 127 phytoplankton species. The abundance of phytoplankton in Siwak Bay was 1025,185 ind/L. The highest abundance was the genus of Trichodesmium. The species diversity index was 3,33. Based on the species diversity index, it can be said that the waters of Siwak Bay are not polluted.