scholarly journals CRUSTACEA OF THE POND OF TOMASHEV KOLOK IN THE SAMARA CITY

2017 ◽  
Vol 19 (3) ◽  
pp. 154-160
Author(s):  
A.V. Kireev ◽  
Yu.L. Gerasimov
Keyword(s):  
Species Composition ◽  
Seasonal Dynamics ◽  
Daphnia Longispina ◽  
Crustacean Species ◽  
Chydorus Sphaericus ◽  
Urban Pond ◽  
Ceriodaphnia Reticulata

The species composition and seasonal dynamics of quantity of Crustacean populations in small urban pond is studied. The list of 15 Crustacean species is presented. Daphnia longispina, Ceriodaphnia reticulata and Cyclops copepodits dominate in the first half of summer to July, Chydorus sphaericus dominate in August and September.

Acidification and the structure of crustacean zooplankton in mountain lakes: The Tatra Mountains (Slovakia, Poland)

Biologia ◽  
2006 ◽  
Vol 61 (18) ◽  
Author(s):  
Zuzana Hořická ◽  
Evžen Stuchlík ◽  
Igor Hudec ◽  
Martin Černý ◽  
Jan Fott
Keyword(s):  
Species Composition ◽  
Daphnia Pulex ◽  
Crustacean Zooplankton ◽  
Tatra Mountains ◽  
Daphnia Longispina ◽  
Forest Zone ◽  
Lake Ecosystems ◽  
Chydorus Sphaericus ◽  
Ceriodaphnia Quadrangula ◽  
High Concentrations

AbstractSpecies composition of planktonic Crustacea in 102 lakes in the West and High Tatra Mountains, studied during the peak of anthropogenic acidification (1978–1996), is presented in this work. Zooplankton of the Tatra lakes have been studied since the middle of the 19th century, which later enabled the recognition of lake acidification and the assessment of its effect on the plankton community of lake ecosystems. In the pre-acidification period, the distribution of zooplankton was determined namely by the lake altitude and orientation (north vs. south) and by the catchment character. Crustacean zooplankton in larger lakes consisted of a limited number of species, with Acanthodiaptomus denticornis and Daphnia longispina dominating lakes in the forest zone, and Arctodiaptomus alpinus, Cyclops abyssorum, Daphnia longispina, Daphnia pulicaria, and Holopedium gibberum dominating lakes in the alpine zone. Ceriodaphnia quadrangula, Daphnia obtusa, Daphnia pulex, and Mixodiaptomus tatricus occurred in lakes with high concentrations of dissolved organic matter and in strongly acidified waters. Anthropogenic acidification has caused drastic changes in both the chemistry and biology of the Tatra lakes. Based on their status during the acidification peak, lakes were divided into three categories: non-acidified (with no change in the species composition of crustacean zooplankton due to the acidification), acidified (planktonic Crustacea disappeared in lakes with meadow-rocky catchments), and strongly acidified lakes where original Crustacea in meadow-rocky catchment lakes disappeared and were replaced by populations of the acid-tolerant littoral species Acanthocyclops vernalis, Chydorus sphaericus, and Eucyclops serrulatus. The acidification-induced processes of oligotrophication and toxicity of aluminium played a key role in the extinction of species. Despite the first signs of biological recovery observed in the early 2000s, acidification remains the most important factor governing the structure of plankton in the Tatra lakes.

scholarly journals INVERTEBRATES IN THE ECOSYSTEM OF POND ON AMINEVA STREET IN THE SAMARA CITY IN 2010

2017 ◽  
Vol 18 (3.2) ◽  
pp. 45-52
Author(s):  
A.E. Vasin ◽  
Y.L. Gherasimov ◽  
I.V. Djuzhaeva ◽  
Y.V. Satchkova ◽  
E.S. Selezneva
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Seasonal Dynamics ◽  
Rotifer Species ◽  
Urban Pond ◽  
Density And Biomass

Species composition and seasonal dynamics of density and biomass of the population of rotifer and other invertebrates in the small urban pond were investigated. The list of met rotifer species is quoted. It is found, that Brachionidae prevaile in species diversity and abundance.

scholarly journals The Species Composition and Seasonal Dynamics of Thrips (Thysanoptera) Populations on Maize (Zea Mays L.) in Southeastern Poland

2011 ◽  
Vol 51 (3) ◽  
pp. 210-216 ◽  
Author(s):  
Halina Kucharczyk ◽  
Paweł Bereś ◽  
Zbigniew Dąbrowski
Keyword(s):  
Zea Mays ◽  
Species Composition ◽  
Seasonal Dynamics ◽  
Food Source ◽  
Zea Mays L ◽  
Maize Plant ◽  
Seasonal Abundance ◽  
Immature Stages ◽  
Thrips Species

The Species Composition and Seasonal Dynamics of Thrips (Thysanoptera) Populations on Maize (Zea MaysL.) in Southeastern PolandThrips species composition and seasonal abundance was studied on maize crops during two seasons (2006-2007), in southeastern Poland. Altogether 21 species have been identified, among themFrankliniella tenuicornis(Uzel 1895) andHaplothrips aculeatus(Fabricius 1803) which are a graminicolous species and were eudominants, comprising 96.8% in 2006 and 82.0% in 2007 of all collected specimens. Other species occurred only in low numbers. The frequent and numerous presence ofF. tenuicornisspecies in their immature stages in the samples, confirmed the role of the maize plant as the host.H. aculeatusprobably chose maize as a food source and substitute plant for breeding.

scholarly journals Variations de la structure trophique du lac-réservoir oligotrophe Bin El Ouidane (Maroc)

2005 ◽  
Vol 15 (1) ◽  
pp. 193-208 ◽  
Author(s):  
O. Cherifi ◽  
M. Loudiki
Keyword(s):  
Ceriodaphnia Dubia ◽  
Régime Alimentaire ◽  
Tube Digestif ◽  
Tinca Tinca ◽  
Daphnia Longispina ◽  
Tractus Digestif ◽  
Diaphanosoma Brachyurum ◽  
Bin El Ouidane ◽  
Ceriodaphnia Reticulata ◽  
Spectre Alimentaire

L'étude combinée des apports par les crues, du plancton, des contenus algaux du tractus digestif des Cladocères et du régime alimentaire de quelques espèces de poissons dans le lac de barrage oligotrophe Bin El Ouidane a permis de dégager les conclusions suivantes : - les apports particulaires et dissous par les crues durant la période d'étude 1995-1997 ont une influence marquée sur la dynamique saisonnière du zooplancton via les changements dans la dynamique du peuplement phytoplanctonique ; - durant les trois années d'étude, le maximum de biomasse zooplanctonique se situe généralement juste après les pics printanier et estival du phytoplancton mettant ainsi en évidence l'importance du zooplancton herbivore dans la chaîne alimentaire pélagique du lac ; - l'étude des contenus algaux du tractus digestif des Cladocères Daphnia longispina, Daphnia lumholtzi, Diaphanosoma brachyurum, Ceriodaphnia dubia, Ceriodaphnia reticulata et Bosmina longirostris a montré que l'essentiel des espèces sont des filtreuses herbivores qui adoptent un comportement nutritionnel variable en fonction du temps lié à la disponibilité en phytoplancton, à leur âge et aux caractéristiques biotiques et abiotiques de l'écosystème lacustre ; - l'étude préliminaire du régime alimentaire de trois espèces de poissons Tinca tinca, Eupomotis gibbosus et Cyprinus carpio montre que leur spectre alimentaire est nettement dominé par le plancton. La fraction faunistique au niveau de leur tube digestif est représentée essentiellement par les Cladocères de grande taille et les Chironomes. Ceci met en évidence l'importance de ces poissons, à régime essentiellement planctonophage, dans la régulation des peuplements planctoniques de la retenue Bin El Ouidane.

scholarly journals WATER MITES (ACARIFORMES: HYDRACHNIDIA, HALACAROIDEA) OF BOGS OF WESTERN SIBERIA (RUSSIA)

2018 ◽  
Vol 18 ◽  
pp. 102-109 ◽  
Author(s):  
Vitaly A. Stolbov ◽  
Victoria V. Popova ◽  
Sergei D. Sheikin ◽  
Sergei S. Tupitsyn
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Seasonal Dynamics ◽  
Western Siberia ◽  
Water Bodies ◽  
Water Mites ◽  
Sphagnum Bogs ◽  
Temporary Water Bodies ◽  
Temporary Water

Water mites (Acariformes, Hydrachnidia, Halacaroidea) were studied in 8 different bogs and fens of Western Siberia. 28 species of Hydrachnidia and 5 species of Halacaridae were found in them. The species composition in the bogs was very different. In the fens the abundance and species diversity were higher than in sphagnum bogs and the fauna were based on spring species. The representatives of the halacarid mites dominated in sphagnum bogs, which were not found in the fens. The specific similarity of the studied bogs was low. At the same time, the peculiarities of seasonal dynamics in bogs and fens were similar and resembled temporary water bodies: high numbers in the spring and an abruptly decline in the summer, with a slight increase in autumn.

scholarly journals Structure of spider-harvestman assemblages (Arachnida, Araneae, Opiliones) of model biotopes of Visimskiy natural reserve

2021 ◽  
pp. 191-205
Author(s):  
Sergei L. Esyunin ◽  
◽  
Nadezhda L. Ukhova ◽  
Anna M. Domolazova ◽  
◽  
...  
Keyword(s):  
Species Composition ◽  
Seasonal Dynamics ◽  
Dominant Species ◽  
Species Differences ◽  
Occurrence Rate ◽  
Pitfall Traps ◽  
Spruce Forests ◽  
Natural Reserve

The assemblages of herpetobion spiders from four habitats: two seven-year-old burns, spruce-birch and fir-spruce forests, were examined in the Visimskiy Reserve (Sverdlovsk Region) during May-September 2017 using pitfall-traps. The structure of the spiders population of burns significantly differs from that of forests in species composition, total occurrence rate (ind./100 trap-days), seasonal dynamics and composi-tion of the dominant species. Differences in the structure of the population are most pronounced in the summer. In summer spider assemblages of burns, the most abundant are Agyneta allosubtilis, Alopecosa pulverulenta, P. fulvipes, P. lugubris, P. riparia and Piratula hygrophila, in forests - Allomengea scopigera and Haplodrassus soerenseni.

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