Structure Of Macrozoobenthos Research Articles

Macrozoobenthos Composition and Structure in the Lakes of the Sub-Taiga Sub-Zone of the Western Siberia

In 2016 the composition and structure of macrozoobenthos were investigated in eight lakes of the sub-Taiga sub-zone of the Western Siberia. The benthic fauna of the lakes was represented by 70 species belonging to six classes of invertebrates.

О неравномерности структуры макрозообентоса малых горных водотоков (на примере родникового ручья Травянистый, хребет Хамар-Дабан)

О неравномерности структуры макрозообентоса малых горных водотоков (на примере родникового ручья Травянистый, хребет Хамар-Дабан)

Study of the macrozoobenthos community structure in the mangrove ecosystem gampong Gosong Telaga, Aceh Singkil district

This study aims to analyze the community structure of macrozoobenthos in the mangrove ecosystem of Gampong Gosong Telaga, Aceh Singkil. This study was conducted in May 2016. The method used in this research is survey method with purposive sampling carried out at 5 stations with 3 repetitions. There are seven species found were classified into 3 classes: gastropods, bivalves and crustaceans. From the research data, it is known that the Diversity Index (H ') at each station is worth between 1.8 - 2.52, Uniformity Index (E) 0.82 - 0.90, Dominance Index (C) 0.19 - 0, 33 and Density Index (D) 48.33 - 75.33 ind / m2. The type of mangrove at the location of this study was Rhizopora apiculata with a density of 1.11 - 0.58 individuals / m2.

STUDI KOMUNITAS MAKROZOOBENTOS DI HUTAN MANGROVE KECAMATAN INSANA UTARA KABUPATEN TIMOR TENGAH UTARA

The development in Wini Beach coastal area will have an impact on the destruction of the mangrove ecosystem which is a habitat for the life of the macrozoobenthic fauna. This study aims to determine the community structure of macrozoobenthos including abundance, diversity, evenness and dominance of the type of macrozoobenthos in the mangrove area. The study was carried out in the District of North Insana which included the mangrove area of Temkuna Beach (station I) and the mangrove area of Tanjung Bastian Beach (station II). Taking macrozoobenthos samples was carried out at low tide using the line transect method which was made perpendicular to the land in the mangrove forest area. The results of the study found 13 types of macrozoobenthos fauna spread over 2 stations namely the 8-type gastropod class, bivalvia class 4 types and 1 type crustacean class. Medium category (H ') = 2.41 index, Uniformity Index (E) = 0.938 classified as stable community and Dominance index (D) = 0.10 low category. The Equity Index score is classified as a stable condition where no macrozoobenthos species dominate. Virtual sex chat with porn models on webcam. Moscow and the world! Hundreds of guys and girls online. Start chatting now! Come in live cam girl naked free-naked scared, pussy get pictures with the inscription, mom wants more porn. Watch porn video chat with naked girls you can without registration, enjoy free erotic sex show in real time.

Community structure of macrozoobenthos and the evaluation of water environment in Lake Baima, Jiangsu Province, China

To characterize the community structure of macrozoobenthos and evaluate the water environment in Lake Baima, macrozoobenthos were investigated at 11 sites of Lake Baima monthly in 2016. Water quality was evaluated based on the Environmental Quality Standards for Surface Water (GB3838-2002, in Chinese), comprehensive trophic level index and biological indices. A total of 16 species were recorded, belonging to 4 phyla, 16 orders, including 8 chironomids, 3 oligochaetes, 2 Mollusca, and 3 other species. The mean density and biomass of macrozoobenthos were 277.06 ind./m2 and 31.3953 g/m2, respectively. Tanypus chinensis, Limnodrilus hoffmeisteri, Branchiura sowerbyi, Propsilocerus akamusi, Chironomus plumosus and Bellamya sp. were the dominant species in Lake Baima. Higher spatial heterogeneity was observed for the mean biomass than the mean density. The highest density was recorded in the central sites, and relatively lower values were observed in the offshore sites. The biomass presented the opposite distribution pattern compared with density. It showed that the lake was moderately polluted at a mesotrophic level, and the eutrophication strongly influenced the structure of macrozoobenthic assemblages in Lake Baima. As an important water source and aquaculture site, more attention should be paid on water environment protection in Lake Baima.

Community structure of macrozoobenthos as bioindicator of pepe river quality, Mojosongo Boyolali

The main problem that arises so far is the declining water quality of Pepe river due to increased human population and industrial activities along the Pepe River. This research was conducted in August 2017 using purposive random sampling method in three stations. Theobjective of this research is to provide basic information about the change of macrozoobenthos community structure which can be used as bioindicator of environmental quality in downstream of Pepe River. The results of this study showed that 72 macrozoobenthos species were found in 4 Class and 3 Fillum. The biological parameters showed that the upstream, center and downstream of the Pepe River was highly polluted, characterized by low diversity index, high density and high dominance index and low diversity. This study foundthree tolerant species that can be used as bioindicator of quality of water in the lower part of the Pepe River, i.e., Chirronomus sp, Pheretima sp, Cheumatopsyche,Melanoides maculata, Melanoides punctata and Thiara scabra. Based on the calculation of mFBI that can be used as an initial estimation of water quality status, Pepe river is very heavy polluted by organic matter.

Effect of Anthropogenic Pollution on Macrozoobenthos Structure in Barnaulka River (Upper Ob Basin)

The effect of anthropogenic pollution on the structure of benthic animal communities in the Barnaulka R. (Ob tributary) has been studied. Statistical analysis was used to assess the effect of habitat factors on macrozoobenthos structure. The structure characteristics of benthic macroinvertebrate communities and the bioindication indices calculated from them are shown to depend on the hydrophysical and hydrochemical characteristics of water and bottom sediments.

Water residence time in the Włocławek dam reservoir (the Vistula river, Poland) affects its macrozoobenthos structure

The aim of our study was to compare the macrozoobenthos structure as well as water and organic matter content of the bottom sediments of two hydrologically different zones of a strongly fluvial the Włocławek Dam Reservoir. Samples were collected from the Włocławek Dam Resevoir at six sites. Three of them were located in the upper, rheolimnic part (URP) of the reservoir and three others in its lower, limnetic part (LLP). Water transparency, sediment water content and organic matter content in the sediments were higher in the LLP. The higher number of taxa and diversity of macrozoobenthos were found in the URP of the reservoir. The density of bottom fauna was slightly higher in the LLP (90,990 ind. m−2) than in the UPR (73,486 ind. m−2), while the significantly higher biomass of macrozoobenthos was found in the URP of the reservoir (2314 g · m−2) than in the LLP (336 g · m−2). The dominant taxa of Oligochaeta and Chironomidae larvae did not show significant differences in the density between both zones. Some taxa were found only in the URP. In this zone, significantly higher densities of other taxa were observed. The only species with greater abundance in the LLP wasPotamothrix hammoniensis(Oligochaeta). Due to the very short water residence time, the differences in the parameters under study between the URP and the LLP of the reservoir were smaller as well as the abundance of the macrozoobenthos was distinctly higher than in other reservoirs.

Composition and structure of macrozoobenthos of exposed sandy littoral on Bering Island

Composition and structure of macrozoobenthos of exposed sandy littoral on Bering Island

Macrozoobenthos structure in a temperate acid oligotrophic lake

The aim of the paper was to evaluate the structure of macrozoobenthos in acid, oligotrophic Jasne Lake. The basic abiotic parameters of water and bottom sediments were also studied. The samples were taken on five dates: 25.11.1997 and 13.05., 01.07., 7.08. and 21.10. in 1998. The sampling sites were located in four clearly different zones of the lake bottom at depths: 5 m, 10 m, 15 m and 19 m. The water transparency was very high (11 m) and water pH was extremely low (4.3). The oxygenation of the water near bottom was quite good up to a depth of 10 m. Generally both the water content (75.9% – 96.1%) and organic matter content (17.5% – 76.5%) in the bottom sediments were relatively high and increased with the depth. The taxonomic composition of the macrozoobenthos was similar to that of other acid water bodies, i.e. common, ubiquitous taxa dominated. Its species richness, diversity, and the density decreased as the depth increased but it is worth noting that the zone colonized by diverse and abundant macrozoobenthos extends to a depth of at least 10 m. The dominant group of benthic fauna at a depth of 5 m were Chironomidae larvae (almost 80% of the total macrozoobenthos density). At this station Ceratopogonidae and Sialis sp. larvae were also relatively numerous. In turn, at depths of 10 m and 15 m Asellus aquaticus (Isopoda) (43% and 57%, respectively) and Trichoptera larvae (37% and 21%, respectively) dominated. Among the chironomids Pseudochironomus sp. and Chironomus sp. larvae prevailed. The only taxa characteristic of acidic waters were Stylodrilus heringianus (Oligochaeta) and Ablabesmyia monilis (Chironomidae).

STRUKTUR KOMUNITAS MAKROZOOBENTOS DI KAWASAN REHABILITASI MANGROVE DAN MANGROVE ALAMI DI KAMPUNG NIPAH KABUPATEN SERDANG BEDAGAI SUMATERA UTARA

Research on the community structure of macrozoobenthos in the area of mangrove rehabilitation and mangrove naturally in Kampung Nipah Bedagai Serdang, North Sumatra was aim to determined the community structure of macrozoobenthos with the inventory and identification of the types of macrozoobenthos at the sites. The method used in this research is descriptive method by determining and manufacture of sampling points with purposive sampling method. The results showed that macrozoobenthos were found grouped in three classes of Bivalves, Gastropods, and Polychaeta with the total number of individuals as much as 775 individuals. Group class that has the number of families and the highest number of species are Gastropods (19 families and 29 species), followed by Bivalves (6 families and 13 species). Polychaeta only has one family and one spesies. Diversity index (H ') of the study sites showed a value of 2.37 with the medium category. Value uniformity among the sites is 0,63 which means that the distribution of individuals of each type tends to evenly at each station and observation points.

Macrozoobenthos in the Gilevsk Reservoir and adjacent reaches of the Alei River (Altai krai)

The taxonomic composition and development level of macrozoobenthos in the Gilevsk Reservoir and the Alei River, as well as down- and upstream the reservoir, have been described. The dominant taxa of benthic invertebrates have been identified. The water quality of the studied objects has been estimated using the methods of bioindication based on the composition and structure of macrozoobenthos.

Community structure of macrozoobenthos and its relationship with environmental factors in Lake Gehu, Jiangsu, China.

A survey on macrozoobenthos was conducted seasonally and 14 aquatic physicochemical parameters were monitored monthly to reveal the community characteristics of macrozoobenthos and their relationship with aquatic environmental factors at 20 sampling sites in the Lake Gehu from July 2013 to December 2014. A total of 25 macrozoobenthos species including 3 species (12% of total) of Mollusca, 12 species (48%) of Chironomidae, 4 species (16%) of Oligochaeta, 4 species (16%) of Crustacean were identified. The dominant species were Limnodrilus hoffmeisteri, Branchiuras owerbyi, Tanypus chinensis, and Propsilocerus taihuensis. Density and biomass of Chironomid larvae and Oligochata had significant spatial and seasonal changes. The state of aquatic environment was mainly affected by the nitrogen, phosphorus and water temperature in the Lake Gehu, and TN, NO3--N and DO changed significantly with space and season. The Spearman correlation analysis indicated that TN and NO3--N played a key role in the community structure characteristics of the macrozoobenthos in the Lake Gehu. The environmental variables could well explain the changes of main macrobenthic species.

Dynamics of macrozoobenthos structure in urban spring brooks of the Middle Volga basin

The dynamics of macrozoobenthos structure in six spring brooks of Zhigulevsk (Middle Volga, Samara oblast) and two spring brooks in the Samarskaya Luka National Park was studied in 2005–2011. Changes in the structure of dominant species are more pronounced in the urban brooks than in the conservation area of the national park. Three main types of changes in the structure of invertebrate communities associated with organic matter dynamycs in bottom sediments, species expansion, and the drying up of a watercourse have been distinguished.

Characteristics of Macrozoobenthos Lakes of the Barlinek-Gorzów Landscape Park (North-West Poland) on the Basis of the European Union Water Framework Directive

Contamination of lake waters is one of the factors affecting the qualitative and quantitative development of benthic organisms. Aside from contamination, the abundance of macrozoobenthos is determined by other conditions, i.e. predation pressure, phytoplankton biomass, detritus biomass, as well as the accessibility and quality of water reservoir bottom.The Barlinek-Gorzów Landscape Park was established in October 1991. The Barlinek-Gorzów Landscape Park includes more than 55 000 ha of forests, lakes, fields, meadows, and is characterized by a great diversity of habitats and abundant life forms [46].To protect the most valuable plant communities and animal habitats, five nature reserves were created within the boundaries of the Park:“Skalisty Jar Libberta” includes Libbert’s Gorge, and the surrounding moraine hills and glacial erratics. It is the only site featuring lime stones and boulders in Western Pomerania and is surrounded by oak and beech forests [46].“Dębina” forest conservation complex known as the Central European wet-ground forest, featuring stately oaks and beeches with some lime, hornbeam and old pine trees. In its clean environment, as many as 50 species of arboreal lichen have been preserved [46]. “Markowe Błota” – marshland, with its typical vegetation such as the Sphagnopsida, wild rosemary, ordinary cranberry, cottongrass. The site is visited quite often by white-tailed eagles [46].The water reserve of the “River Przyłężek”. It includes a section of the River, the slopes of the riverbank and the surrounding beech stand with some tree specimens that are more than 100 years old. Seen as the watercourse resembles mountain streams, with its pure and cold water, it provides appropriate conditions for Salmonidae to live and spawn [46].The forest reserve “Wilanów” aims to protects the natural mixed forest with vintage beech, oak and pine trees. Thanks to the varied topography, diverse rare types of forests have been preserved here [46].The objective of the research conducted in the course of 2008 – 2012 was to determine the qualitative and quantitative structure of macrozoobenthos in the lakes of the Barlinek-Gorzów Landscape Park in the summer season.The research enabled estimating how far the eutrophication processes have advanced in selected lakes of the Barlinek-Gorzów Landscape Park.Qualitative and quantitative analyses of the macrozoobenthos structure in the lakes Barlinek-Gorzów Landscape Park were conducted in the summer seasons of 2008, 2010 and 2012.By comparing the average density of benthic fauna of the lakes Barlinek-Gorzów Landscape Park with the lakes Western and Northern Polish you can see big changes in the density of taxa studied.In comparison with other lakes Western and Northern Polish in the lakes Barlinek-Gorzów Landscape Park is a large number of taxa, however, as a result of the distribution of non-harmonic doesn't translate to the indicator value of biodiversity index PIE.On the basis of the analysis of research in the Western and Northern Polish Lakes summer macrozoobenthos it can be concluded that in the lakes Barlinek-Gorzów Landscape Park very intensively develop Oligochaeta. While the larvae of Chironomidae subdominants status in the period under review amounting to water, developed in other lakes much more intensely, acting mostly the main ingredient of benthic fauna.

Characteristics of Macrozoobenthos Lakes of the Barlinek-Gorzów Landscape Park (North-West Poland) on the Basis of the European Union Water Framework Directive

Contamination of lake waters is one of the factors affecting the qualitative and quantitative development of benthic organisms. Aside from contamination, the abundance of macrozoobenthos is determined by other conditions, i.e. predation pressure, phytoplankton biomass, detritus biomass, as well as the accessibility and quality of water reservoir bottom.The Barlinek-Gorzów Landscape Park was established in October 1991. The Barlinek-Gorzów Landscape Park includes more than 55 000 ha of forests, lakes, fields, meadows, and is characterized by a great diversity of habitats and abundant life forms [46].To protect the most valuable plant communities and animal habitats, five nature reserves were created within the boundaries of the Park:“Skalisty Jar Libberta” includes Libbert’s Gorge, and the surrounding moraine hills and glacial erratics. It is the only site featuring lime stones and boulders in Western Pomerania and is surrounded by oak and beech forests [46].“Dębina” forest conservation complex known as the Central European wet-ground forest, featuring stately oaks and beeches with some lime, hornbeam and old pine trees. In its clean environment, as many as 50 species of arboreal lichen have been preserved [46]. “Markowe Błota” – marshland, with its typical vegetation such as the Sphagnopsida, wild rosemary, ordinary cranberry, cottongrass. The site is visited quite often by white-tailed eagles [46].The water reserve of the “River Przyłężek”. It includes a section of the River, the slopes of the riverbank and the surrounding beech stand with some tree specimens that are more than 100 years old. Seen as the watercourse resembles mountain streams, with its pure and cold water, it provides appropriate conditions for Salmonidae to live and spawn [46].The forest reserve “Wilanów” aims to protects the natural mixed forest with vintage beech, oak and pine trees. Thanks to the varied topography, diverse rare types of forests have been preserved here [46].The objective of the research conducted in the course of 2008 – 2012 was to determine the qualitative and quantitative structure of macrozoobenthos in the lakes of the Barlinek-Gorzów Landscape Park in the summer season.The research enabled estimating how far the eutrophication processes have advanced in selected lakes of the Barlinek-Gorzów Landscape Park.Qualitative and quantitative analyses of the macrozoobenthos structure in the lakes Barlinek-Gorzów Landscape Park were conducted in the summer seasons of 2008, 2010 and 2012.By comparing the average density of benthic fauna of the lakes Barlinek-Gorzów Landscape Park with the lakes Western and Northern Polish you can see big changes in the density of taxa studied.In comparison with other lakes Western and Northern Polish in the lakes Barlinek-Gorzów Landscape Park is a large number of taxa, however, as a result of the distribution of non-harmonic doesn't translate to the indicator value of biodiversity index PIE.On the basis of the analysis of research in the Western and Northern Polish Lakes summer macrozoobenthos it can be concluded that in the lakes Barlinek-Gorzów Landscape Park very intensively develop Oligochaeta. While the larvae of Chironomidae subdominants status in the period under review amounting to water, developed in other lakes much more intensely, acting mostly the main ingredient of benthic fauna.

Peculiarities of macrozoobenthos structure formation in riffles of the Karelian coast of the White sea

Species composition, abundance and biomass of macrozoobenthos were investigated in the riffles of the Karelian coast of the White Sea. The longitudinal dynamics of benthic communities’ structure is weak due to the stony-bottomed riffles almost throughout the rivers. Local factors can cause significant changes in the structure of macrozoobenthos. Thus, the communities with high level of filter-feeders biomass (net-weaving caddis fly larvae, the midge larvae, bivalves) are formed in the river sites downstream from the drainage lakes. In the areas affected by salty sea waters (parts of the river mouth), macrozoobenthos structure is significantly depleted. Local landscape features should be considered when describing the longitudinal changes in macrozoobenthos structure of rivers.

Community structure of macrozoobenthos and the evaluation of water environment in Lake Taihu

To characterize the community structure of macrozoobenthos and to examine their relationships with environmental factors,macrozoobenthos were investigated at 116 sites of Lake Taihu in winter and summer of 2014. A total of 55 species were recorded,belonging to 3 phyla,7 classes,18 orders and 27 families. The mean density and biomass of macrozoobenthos were 405. 5ind. / m2 and 146. 6 g / m2,respectively. Corbicula fluminea,Bellamya aeruginosa,Limnodrilus hoffmeisteri,Grandidierella aihuensis,Nephtys oligobranchia and Paranthura sp. were the dominant species in Lake Taihu. The 116 sampling sites were classified into three groups based on cluster analysis using environmental factors. One-way ANOVA showed that environmental factors differed significantly among the three groups. Analysis of similarities and non-metric multidimensional scaling showed that macrozoobenthic assemblages exhibited remarkable difference among the three groups. Canonical correspondence analysis demonstrated that macrozoobenthic community structure was highly correlated with habitat-specific differences in water depth,total nitrogen,total phosphorus,ammonium nitrogen,macrophytes,dissolved organic carbon and Φ50. From the east and southwest to the north area of Lake Taihu,the diversity indexes of macrozoobenthos decreased but the density and biomass increased with the increase of trophic status index. Our results showed that the trophic level,bottom sediment type and macrophytes coverage were the key factors regulating community structure and diversity of macrozoobenthos.

Salinity tolerance of macroinvertebrates in stream waters (review)

The review of the salinity tolerance of various macrozoobenthos taxa is based on the published data and the results of our studies. Significant differences in the tolerance of hydrobionts to water salinity in rivers of different arid regions are shown. Leeches, bivalved mollusks, larvae of stoneflies, caddis flies, and mayflies are the most stenohaline species. The taxonomical structure of macrozoobenthos in saline rivers of Lake Elton basin in the arid zone of Russian South is presented.

Species composition and structure of macrozoobenthos in Lake Sevan during the period of its increased water level

A list of macroinvertebrate species recorded in the zoobenthos in Lake Sevan in 2007 and 2010 is presented. The list includes 38 species, 14 of which have been found in the lake for the first time. Chironomid larvae and pupae are the most diverse (27 species) in the macrozoobenthos of the lake. In Bolshoi Sevan, the maximum biomass of macrozoobenthos (24.82 g/m2) was recorded in the sublittoral; in Malyi Sevan the maximum biomass (14.31 g/m2) was recorded in the profundal. In 2010 chironomids dominated by biomass in the sublittoral (48.9 and 60.3%, respectively). The benthos in the littoral was dominated by oligochaetes (50.2%).