Temat: community structure

Skocz do pozycji: 1.

Tytuł:: The relationship between parasite community structure and level of bioaccumulation of pollutants within parasite environment
Autorzy:: Sebelova, S.
Dusek, L.
Machala, M.
Gelnar, M.
Jurajda, P.
Tematy:: parasite
environment
bioaccumulation
community structure
pollutant; Pokaż więcej
Data publikacji:: 1998
Powiązania:: https://bibliotekanauki.pl/articles/839055.pdf Link otwiera się w nowym oknie
Źródło:: Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:: Annals of Parasitology
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 2.

Tytuł:: Structure of Plankton Communities in Cijulang River Pangandaran District, West Java Province, Indonesia
Autorzy:: Sahidin, Asep
Nurruhwati, Isni
Riyantini, Indah
Triandi, Muhamad
Tematy:: Cijulang River
cijulang
community structure
plankton; Pokaż więcej
Data publikacji:: 2019
Powiązania:: https://bibliotekanauki.pl/articles/1077072.pdf Link otwiera się w nowym oknie
Źródło:: World News of Natural Sciences; 2019, 23; 128-141
2543-5426
Pojawia się w:: World News of Natural Sciences
Opis:: A river is a water ecosystem that plays an important role in the hydrological cycle and functions as a catchment area for the surrounding area. One of the organisms inhabiting river waters is plankton. The purpose of this study was to determine and analyze the structure of the plankton community in the waters of the Cijulang River and to study the relationship between plankton abundance, as well as some physical-chemical parameters of the water. The study was conducted in January, February, and March 2018 on the Cijulang River, at 5 (five) stations with a purposive sampling method. Accordingly, 17 genera were found, from 7 phytoplankton classes consisting of 6 Bacillariophyceae genera, 1 Clorophyceae genera, 2 Cyanophyceae genera, 3 Zygnematophyceae genera, 2 Desmidiaceae genera, 1 Synurophyceae genera, and 2 Fragillariophyceae genera. Also found were 10 genera from 5 classes of zooplankton consisting of 4 genera Maxillopoda, 2 genera Branchiopoda, 1 genera Gastropoda on veliger fase, 1 genera Ostracoda, and 2 genera Copepoda. The abundance of phytoplankton obtained ranges from 11-57 cells / L, while the zooplankton ranges from 8 – 40 ind/L. The diversity index (H ') = 1.397 - 2.275 and dominance index (D) = 0.022 - 0.294. Physical-chemical parameters of the waters, respectively, were 22 °C - 31 °C, light intensity 47.5 cm - 254 cm, salinity 0 ppt - 20 ppt, and dissolved oxygen 6.2 mg / L - 13.4 mg / L. Ammonia concentration 0.03 - 0.08 mg / L. All stations had a phosphate value of less than 0.16 mg / L and a silicate concentration of 0.01 - 0.0581 mg / L.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effects of climate change on microbial community structure and function in the Antarctic glacier lagoon
Autorzy:: Swiatecki, A.
Gorniak, D.
Jankowska, K.
Zdanowski, M.K.
Borsuk, P.
Zmuda-Baranowska, M.J.
Grzesiak, J.
Tematy:: climate change
microbial community
community structure
community function
Antarctic
glacier lagoon
glacier recession; Pokaż więcej
Data publikacji:: 2010
Powiązania:: https://bibliotekanauki.pl/articles/11992.pdf Link otwiera się w nowym oknie
Źródło:: Papers on Global Change; 2010, 17
2300-8121
1730-802X
Pojawia się w:: Papers on Global Change
Opis:: One of the dramatic effects of global warming is the retreat of glaciers. This phenomenon has intensified in the last two decades. Postglacial areas are quickly colonised by various groups of organisms. Auto- and heterotrophic microorganisms play an especially vital role in these processes. They thrive in shallow glacial lagoons which often form in front of retreating glaciers. These reservoirs are characterised by high dynamics of physicochemical parameters, including: salinity, temperature and concentrations of organic compounds and nutrients. The conducted microbiological studies have revealed rich structural and functional diversity of bacteria occurring in the ecosystem of Ecology Lagoon situated on King George Island. Bacteria found on the surface of algae and stones in the shore zone of the lagoon showed particularly intense metabolic activity. A molecular analysis has indicated that unique taxonomic groups of bacteria occur in the ecosystem of Ecology Lagoon.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Analysis of the Impact of Stormwater Systems on Receiving Waters Based on the Analysis of Algal Community Structure
Autorzy:: Kozłowska, Aleksandra
Wojtaś, Edyta
Piłat-Rożek, Magdalena
Cybulski, Michał
Łagód, Grzegorz
Tematy:: surface water quality
bioindication
algae
community structure
stormwater system; Pokaż więcej
Data publikacji:: 2023
Powiązania:: https://bibliotekanauki.pl/articles/59114138.pdf Link otwiera się w nowym oknie
Źródło:: Journal of Ecological Engineering; 2023, 24, 9; 139-147
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Opis:: One of the important ways to prevent permanent environmental pollution is to constantly monitor its quality, which can be performed in several ways. The present bioindication study analyzed the level of diversity and abundance of biofilm microorganism communities, which illustrate the state of the studied aquatic environment, enabling to determine its quality. The impact of stormwater discharge on the receiver at particular points was evaluated on the basis of the reaction of selected microorganisms or their groups to the substances appearing in the watercourse. The study of indicator organisms gives information about the waters of a given body of water without expensive hydrochemical tests and without causing a burden on the environment during the production as well as disposal of reagents that are consumed in many classical physicochemical analyses. On the basis of selected algal species, the Shannon index and McArthur index were calculated, and the effect of storm sewer discharge on the communities of indicator organisms was determined. The best visible impact of storm sewer discharge was seen on the basis of the entire study cycle in relation to the median of the McArthur index.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 5.

Tytuł:: The Relationship between Benthic Macrofauna Community Structure and Density of Mangrove Vegetation in Mempawah Mangrove Park, West Kalimantan, Indonesia
Autorzy:: Noviatri, Syafira Eka
Zahidah, Zahidah
Herawati, Heti
Dewanti, Lantun Paradhita
Tematy:: Community Structure
Density
Macro-faunal benthic
Mangrove
Mempawah Mangrove Park; Pokaż więcej
Data publikacji:: 2021
Powiązania:: https://bibliotekanauki.pl/articles/1031497.pdf Link otwiera się w nowym oknie
Źródło:: World News of Natural Sciences; 2020, 33; 38-47
2543-5426
Pojawia się w:: World News of Natural Sciences
Opis:: This research was conducted in Mempawah Mangrove Park, West Kalimantan on July – August 2018. The research aims to map the benthic macrofauna community structure and its relationship with the structure of mangrove vegetation. The research method was a survey and use purposive sampling data method in observation stations based on different stages of mangrove vegetation. The observation stations consists of Avicennia marina and Rhizophora stylosa as the species of mangroves. Station 1 consists of mangroves in seedling size, station 2 consists of mangroves in pole size, and station 3 consists of mangrove trees. The benthic macrofauna consist of 8 species from 3 different classes, merostomata, malacostraca, and gastropods. The highest abundance value (155 ind/m2), diversity index (1,875) and similarity index (0,668) is in station 2. The relationship between benthic macrofauna abundance and mangrove density has -0,356 as the correlation coefficient which indicates that an increase of benthic macrofauna abundance is in line with the decrease of mangrove density. High density value in research shows that the mangrove is in seedling size, and vice versa a low density value indicates the mangrove trees. The coefficient of determination (0,1272) indicating that the abundance of benthic macrofauna is affected by the mangrove density as 12,72% and 87,28% affected by other factors.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Community structure of Common carp (Cyprinus carpio Linnaeus, 1758) gut bacteria in the Cirata Reservoir, West Java Province, Indonesia
Autorzy:: Nugrahi, Tri Nazar Ulfi
Mulyani, Yuniar
Agung, M. Untung Kurnia
Iskandar, Iskandar
Tematy:: Next Generation Sequencing
Bacterial community structure
Common carp gut bacteria; Pokaż więcej
Data publikacji:: 2021
Powiązania:: https://bibliotekanauki.pl/articles/1839403.pdf Link otwiera się w nowym oknie
Źródło:: World Scientific News; 2021, 161; 130-142
2392-2192
Pojawia się w:: World Scientific News
Opis:: Fish are aquatic animals, where they share the same ecosystem with the bacterial community they are associated with. Community structure is a concept that studies the composition of species and their abundance in a community. Information related to bacterial communities associated with their hosts is very important to support fisheries resource management efforts, both through nature conservation and aquaculture. This study of the bacterial community in the digestive tract of fish can be used to support further utilization of potential bacteria that can be used to improve the fish's immune system. This research was conducted to analyze the structure of the bacterial community found in the intestines of Common carp through a metagenomic approach using the NGS (Next-Generation Sequencing) method. The method used is a metagenomic approach, including DNA isolation from Common carp intestines. Then molecular identification was carried out using Illumina's NGS (Next-Generation Sequencing) method using the 16S rRNA gene marker. The results of the analysis using the NGS method showed as many as 19 types of bacterial phyla identified with the top three phyla, namely Fusobacteria (80%), Bacteriodetes (15%), and Firmicutes (3%). The phylum Fusobacteria is dominated by the genera Fusobacterium, Propionigenium, Ilyobacter, Leptotrichia, and Sebaldella. The phylum Bacteriodetes is dominated by the genera Porphyromonas, Odoribacter, Bacteroides, Sphingobacterium, and Barnesiella. The phylum Firmicutes is dominated by the genera Clostridium, Lactococcus, and Sarcina, Bacillus, and Lactobacillus.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Substrate influence on the structure of methanogenic Archaea communities during anaerobic digestion
Autorzy:: Dąbrowska, D.
Bułkowska, K.
Ciesielski, S.
Tematy:: anaerobic digestion
Archaea community structure
biogas
PCR-DGGE
fermentacja metanowa
biogaz; Pokaż więcej
Data publikacji:: 2015
Powiązania:: https://bibliotekanauki.pl/articles/363216.pdf Link otwiera się w nowym oknie
Źródło:: Environmental Biotechnology; 2015, 11, 2; 41-47
1734-4964
Pojawia się w:: Environmental Biotechnology
Opis:: This study compares the diversity of methanogenic Archaeal communities that developed during biogas production in reactors fed with different substrates. Reactor I was fed with silages of maize and of alfalfa and timothy; and Reactor II was fed with these silages plus pig slurry and glycerol as co substrates. The Archaeal community structure was studied using polymerase chain reaction––denaturing gradient gel electrophoresis based on the 16S rRNA gene. In both reactors, Methanosphaerula palustris was most abundant, and species belonging to Methanolinea, Methanoculleus, and Methanotorris were present. Only Reactor I, where the ammonia concentration was lower, had species belonging to Methanospirillum and Methanosarcina. Thus, it appears that addition of pig slurry increased the ammonia concentration, which inhibited the growth of Methanospirillum and Methanosarcina.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Community structure of macrozoobentos on artificial reef made from reef rubble and split rock in Tunda Island, province of Banten, Indonesia
Autorzy:: Setiadeswan, Ridlo
Riyantini, Indah
Mulyani, Yeni
Pamungkas, Wahyuniar
Tematy:: Artificial Coral Reef Community Structure
Macrozoobenthos
Reefs Rubble
Split rock
Tunda Island; Pokaż więcej
Data publikacji:: 2019
Powiązania:: https://bibliotekanauki.pl/articles/1076630.pdf Link otwiera się w nowym oknie
Źródło:: World News of Natural Sciences; 2019, 27; 128-140
2543-5426
Pojawia się w:: World News of Natural Sciences
Opis:: Tunda Island has underwater beauty that has the potential to be developed into a marine tourism object. One important part of this is the fringing reef around the island. Unfortunately, this has been severely degraded. This study aims to determine if reef rubble and split rock artificial reefs have the ability to be a living space for macrozoobenthos and to measure the potential community structure. The research was conducted in August 2018 - November 2018 in the eastern part of Tunda Island, and included monitoring the initial conditions, artificial reef creating and positioning, gathering and analyzing macrozoobenthos data. The macrozoobenthos data collection was carried out from September to November 2018 as 4 observations, and was obtained using the Belt Transect method. In the analysis, the community structure data retrieved was divided into 3 categories: diversity, abundance and dominance. The diversity index obtained ranged from 0.43 – 7.65, meaning that it is of low to moderate diversity. The abundance of macrozoobenthos ranged from 1 - 18 individuals /m2 on the rubble type artificial reef and 2.13 – 4.26 individuals /m2 on the split type artificial reefs, with the most common class being gastropods. On rubble type artificial reefs, 14 macrozoobenthos genera were found to be common, while 13 genera were observed in the split type. The genus found was Culcita sp., Chicoreus sp., Diadema sp., Chelidonura sp., Thrombus sp., Chromodoris sp., Cymatium sp., Trochus sp., Terebra sp., Dardanus sp., Malea sp., Oliva sp., Opheodosoma sp., Actinopyga sp., Conus sp., Enoplometopus sp., Cypracea sp., Lambis sp., and Phylidia sp. The dominance index value was in the range of 0.18-1.00 or low to high on both rubble and split types.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Fish monogeneans from a shallow, eutrophic Oswin Lake in Poland
Autorzy:: Mierzejewska, K
Wlasow, T.
Dzika, E.
Tematy:: lake
parasite
community composition
fish
parasite community
Polska
community structure
eutrophic lake
Monogenea
eutrophication
Lake Oswin; Pokaż więcej
Data publikacji:: 2006
Powiązania:: https://bibliotekanauki.pl/articles/838935.pdf Link otwiera się w nowym oknie
Źródło:: Annals of Parasitology; 2006, 52, 1
0043-5163
Pojawia się w:: Annals of Parasitology
Opis:: A study was carried out in a shallow, eutrophic Oświn Lake, within Seven Islands Reserve (north-eastern Poland), in order to determine the infection of fish with monogeneans as sensitive indicators of water quality. This paper presents comparative analysis of the occurrence of Monogenea in fishes from two, distinctly separated pools of the lake, differing in environmental conditions. The impact of fish size and sampling season on the infection parameters was also analyzed. Material and methods. In 1998 and 1999, a total of 1091 fish representing 8 dominant species were examined. Samples were collected four times a year (in May, July, August, and October) simultaneously from the eastern and western parts of the lake. Results. 16 species of Monogenea (and some unidentified specimeus) occurred in the fish examined, most of them from the Dactylogyridae family: Dactylogyrus sphyrna, D. auriculatus, D. intermedius, D. anchoratus, D. falcatus, D. tincae, D. wunderi, D. zandti, D. difformis, D. nanus, D. distinguendus, D. crucifer, D. caballeroi. Furthermore, Tetraonchus monenteron (Tetraonchidae), Gyrodactylus elegans (Gyrodactylidae), and Paradiplozoon megan (Diplozoidae) were detected. Monogenea occurred abundantly on the gills of pike, roach, rudd, white bream, carp bream and crucian carp, but rather sporadically in tench and perch. The highest species variety and diversity of monogenean guilds were detected in carp bream and roach. It was proved that D. crucifer and D. difformis were significantly more abundant in the western pool compared to the eastern one. Infection of fish with Dactylogyridae was season-dependent, contrary to the infection of pike with T. monenteron. Intensity of infection of white bream with D. sphyrna and roach with D. crucifer increased with fish body length; such a relationship did not appear for the other monogeneans and their hosts. Conclusion. Presence of common Monogenea in the fish examined, lack of rare species, poor diversity of monogenean guilds and relatively low infection rate could be connected with the low stability of the lake environment. Location-dependent occurrence of D. crucifer and D. difformis indicated that the exchange between fish groups from the eastern and western parts of the lake is limited.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Fish monogeneans from a shallow, eutrophic Oswin Lake in Poland
Autorzy:: Mierzejewska, K.
Własow, T.
Dzika, E.
Tematy:: lake
parasite
community composition
fish
parasite community
Polska
community structure
eutrophic lake
Monogenea
eutrophication
Lake Oswin; Pokaż więcej
Data publikacji:: 2006
Powiązania:: https://bibliotekanauki.pl/articles/2144087.pdf Link otwiera się w nowym oknie
Źródło:: Wiadomości Parazytologiczne; 2006, 52, 1; 37-47
0043-5163
Pojawia się w:: Wiadomości Parazytologiczne
Opis:: A study was carried out in a shallow, eutrophic Oświn Lake, within Seven Islands Reserve (north-eastern Poland), in order to determine the infection of fish with monogeneans as sensitive indicators of water quality. This paper presents comparative analysis of the occurrence of Monogenea in fishes from two, distinctly separated pools of the lake, differing in environmental conditions. The impact of fish size and sampling season on the infection parameters was also analyzed. Material and methods. In 1998 and 1999, a total of 1091 fish representing 8 dominant species were examined. Samples were collected four times a year (in May, July, August, and October) simultaneously from the eastern and western parts of the lake. Results. 16 species of Monogenea (and some unidentified specimeus) occurred in the fish examined, most of them from the Dactylogyridae family: Dactylogyrus sphyrna, D. auriculatus, D. intermedius, D. anchoratus, D. falcatus, D. tincae, D. wunderi, D. zandti, D. difformis, D. nanus, D. distinguendus, D. crucifer, D. caballeroi. Furthermore, Tetraonchus monenteron (Tetraonchidae), Gyrodactylus elegans (Gyrodactylidae), and Paradiplozoon megan (Diplozoidae) were detected. Monogenea occurred abundantly on the gills of pike, roach, rudd, white bream, carp bream and crucian carp, but rather sporadically in tench and perch. The highest species variety and diversity of monogenean guilds were detected in carp bream and roach. It was proved that D. crucifer and D. difformis were significantly more abundant in the western pool compared to the eastern one. Infection of fish with Dactylogyridae was season-dependent, contrary to the infection of pike with T. monenteron. Intensity of infection of white bream with D. sphyrna and roach with D. crucifer increased with fish body length; such a relationship did not appear for the other monogeneans and their hosts. Conclusion. Presence of common Monogenea in the fish examined, lack of rare species, poor diversity of monogenean guilds and relatively low infection rate could be connected with the low stability of the lake environment. Location-dependent occurrence of D. crucifer and D. difformis indicated that the exchange between fish groups from the eastern and western parts of the lake is limited.
Dostawca treści:: Biblioteka Nauki

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