Assessment of Freshwater Bodies in Murmansk in Terms of Composition of Aquatic Invertebrates

KnE Life Sciences ◽

10.18502/kls.v5i1.6021 ◽

2020 ◽

Author(s):

Elena Minchenok ◽

Tatiana Kovaleva

Keyword(s):

Species Diversity ◽

Species Composition ◽

Dominant Species ◽

Taxonomic Composition ◽

Life Cycles ◽

High Rate ◽

Invertebrate Community ◽

Anthropogenic Eutrophication ◽

Degree Of Dominance ◽

Freshwater Bodies

The paper presents the results of analysis of hydrobiological samples of freshwater bodies of Murmansk (Lake Okunevoe, Lake Ledovoe and Lake Semyonovskoe). The number, degree of dominance and frequency of occurrence of organisms are determined. In Lake Ledovoe, the dominant species represent small organisms with simple life cycles and a high rate of reproduction. The taxonomic composition of water invertebrate community in the Lake Ledovoe highlights features of anthropogenic eutrophication. Several dominant species stand out in the ciliatocenosis of the Lake Okunevoe. The species diversity of micrzooplankton community is higher than in the Lake Ledovoe. In general, the Lake Okunevoe can be characterized as a water body with signs of ecosystem stability damage. The hydrobiocenoses of the Lake Semyonovskoe has the greatest species diversity. However, it is characterized by the tendency to decrease the species composition of organisms – indicators of clean waters. There are initial signs of anthropogenic eutrophication of the Lake Semyonovskoe. The waters of the studied lakes are characterized as β-mesosaprobic (moderately contaminated). It is generally noted that the fauna of water bodies is characterized by small species diversity. In lakes, there is a prevalence of small-sized organisms of heterotrophic nutrition. There is a stable decreasing tendency of species composition of hydrobionts and simplification of food chains in urban aquatic ecosystems subject to anthropogenic impact.

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Composition and diversity of anurans in the Restinga of the Conde municipality, northern coast of the state of Bahia, northeastern Brazil

Biota Neotropica ◽

10.1590/1676-0611-bn-2016-0157 ◽

2016 ◽

Vol 16 (3) ◽

Cited By ~ 3

Author(s):

Felipe Augusto Trindade Gondim-Silva ◽

Alessandra Rodrigues Santos Andrade ◽

Rafael Oliveira Abreu ◽

Jamile Santos Nascimento ◽

Geovane Paixão Corrêa ◽

...

Keyword(s):

Species Richness ◽

Species Diversity ◽

Species Composition ◽

Rainy Season ◽

Dominant Species ◽

The State ◽

Northeastern Brazil ◽

Freshwater Wetland ◽

Northern Coast ◽

Anuran Species

Abstract The Conde municipality is located in the northern coast of the state of Bahia (NC), northeastern Brazil, and is part of the Atlantic Tropical domain. The anuran fauna of the northern portion of the NC is still poorly known if compared to the southern portion. The Restinga is one of the predominant environments of the coastal plains of the NC and it is characterized essentially by presenting sandy soil covered by herbaceous and shrubby vegetation. The objective of this study was to determine the anuran species composition and diversity for the Restinga of the Conde municipality. Sampling was carried out at night by active search over four periods of five consecutive days each, two over the 'main rainy season' and two in a 'lesser rainy season', using 14 sample units (SUs) and five extra sample plots (EPs). We calculated dominance and species diversity using the Berger-Parker and Shannon-Wiener H' indices, respectively. We used accumulation curves and the Jackknife 1 estimator to estimate anuran species richness, considering only the data obtained from the SUs. We recorded 713 anuran specimens distributed within 33 species, 13 genera and five families (Bufonidae, Craugastoridae, Hylidae, Leptodactylidae and Microhylidae). The Hylidae and Leptodactylidae families had the highest species richness. Considering only the SUs (Jackknife 1 estimator in brackets), we recorded 28 species in the study area (33.9 ± 2.3), 13 in Shrubby Vegetation Zones - SVZ (20.8 ± 2.9) and 25 in Freshwater Wetland Zones - FWZ (28.9 ± 1.9). The abundance and species diversity of the FWZ (n = 638 specimens; H'= 2.4) were higher than those recorded for the SVZ (n = 52 specimens; H' = 1.9). The SVZ and FWZ showed distinct dominant species, wherein Pristimantis paulodutrai was the dominant species in SVZ and Scinax fuscomarginatus in FWZ. The Restinga of the Conde municipality stands out as the one with the highest anuran species richness already recorded considering only SVZ and FWZ. Moreover, its anuran species composition represented 55% of the anuran species known for the NC and included taxa common to three different morphoclimatic domains (Tropical Atlantic, Cerrado and Caatinga).

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Changes in fish species diversity and dominant species composition in the Yellow Sea

Fisheries Research ◽

10.1016/0165-7836(95)00422-x ◽

1996 ◽

Vol 26 (3-4) ◽

pp. 337-352 ◽

Cited By ~ 59

Author(s):

Xianshi Jin ◽

Qisheng Tang

Keyword(s):

Species Diversity ◽

Species Composition ◽

Fish Species ◽

Yellow Sea ◽

Dominant Species ◽

The Yellow Sea ◽

Fish Species Diversity

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Diversity and Copepods’composition off Moroccan Atlantic Coast (Northwest Africa): A Review

European Scientific Journal ESJ ◽

10.19044/esj.2017.v13n18p272 ◽

2017 ◽

Vol 13 (18) ◽

pp. 272

Author(s):

Laila El Arraj ◽

Ouadiaa Tazi ◽

Laila Somoue ◽

Karim Hilmi ◽

Mansour Serghini ◽

...

Keyword(s):

Spatial Distribution ◽

Species Composition ◽

Seasonal Variability ◽

Dominant Species ◽

Atlantic Coast ◽

Taxonomic Composition ◽

Factorial Correspondence Analysis ◽

Northwest Africa ◽

Acartia Clausi ◽

Paracalanus Parvus

This overview sums up the results of main investigations and knowledge about zooplankton off Moroccan Atlantic coast. Copepods diversity, spatial distribution, seasonal variability and hydrology off Moroccan Atlantic coast are given. A compilation of taxonomic list of copepods’ species found therein was established from published studies, they accounted for 210. Diversity and richness varied strongly between seasons, an onshore offshore gradient was observed as well. Species composition differed from northern to southern Moroccan Atlantic coast although most dominant species off Morocco’s coasts were Calanus helgolandicus, Paracalanus parvus, Acartia clausi and Corycaeus typicus. In addition, the largest number of species was found in upwelling regions. A synthesis study was established in order to spatial distribution of copepods along Moroccan Atlantic coast. The Factorial Correspondence Analysis of copepod species characterizing the most important sectors has shown different patterns of copepods distribution across Moroccan Atlantic coast; three main areas were clearly segregated according to their taxonomic composition (Northern, Central and Southern Atlantic).

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Species composition and abundance of the oribatid fauna (Acari, Oribatida) at two lakes in the Fløyen area, Bergen, Norway

Biological Letters ◽

10.2478/v10120-009-0014-0 ◽

2010 ◽

Vol 47 (1) ◽

pp. 11-19 ◽

Cited By ~ 9

Author(s):

Anna Seniczak ◽

Torstein Solhøy ◽

Stanisław Seniczak ◽

Arguitxu De La Riva-Caballero

Keyword(s):

Species Diversity ◽

Species Composition ◽

Dominant Species ◽

Low Ph ◽

Spruce Forest ◽

Tree Line ◽

D 20

Species composition and abundance of the oribatid fauna (Acari, Oribatida) at two lakes in the Fløyen area, Bergen, Norway Oribatid communities from the edges of two lakes in the Fløyen area, Bergen, Norway, were compared in June 2005. The lower lake, Blåmansvannet (412 m a.s.l.), is surrounded by spruce forest, while the ‘Higher Lake’ (513 m a.s.l.), is above the tree line. Both lakes have a low pH and their edges are dominated by Sphagnum mosses. The abundance of total mites, as well as of Oribatida, were almost 2-fold higher at the ‘Higher Lake’ (51 510 and 51 160 ind./m2, respectively), while species diversity was lower than at Blåmansvannet. On the shore of Blåmansvannet, the eudominant (20% < D ≤ 40%) species was Trimalaconothrus maior, while Liochthonius peduncularis, Limnozetes ciliatus, and Nanhermannia cf. coronata were dominant (10%< D ≤ 20%). At ‘Higher Lake’, the eudominant species was Limnozetes ciliatus, which reached a 4-fold higher abundance (15 930 ind./m2) than at Blåmansvannet, and dominant species were Liochthonius alpestris, Nanhermannia cf. coronata, and Platynothrus punctatus. At both lakes, juveniles made up about 30% of all oribatids. Four species are new to Norway: Ceratoppia sexpilosa, Liochthonius alpestris, Liochthonius peduncularis, and Trhypochthoniellus longisetus.

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Seedling establishment early on an abandoned field

Plant Protection Science ◽

10.17221/8375-pps ◽

2001 ◽

Vol 37 (No. 3) ◽

pp. 121-127

Author(s):

J. Štolcová

Keyword(s):

Species Diversity ◽

Species Composition ◽

Seedling Establishment ◽

Dominant Species ◽

Chenopodium Album ◽

Amaranthus Retroflexus ◽

Abandoned Field ◽

Thlaspi Arvense ◽

Weed Infestation ◽

Small Plot

The effect of sporadic cultivation on seedling establishment on a field abandoned for 1–4 years was investigated in small-plot trials at Prague-Ruzyně in the spring periods 1993–1995. Cultivation included autumn ploughing, spring harrowing and rolling on all plots that were subsequently left to spontaneous weed infestation. Some plots were then mowed or shallowly cultivated in mid-June and late July, others were left without treatment. No significant differences in seedling establishment were found between plots with different treatments. The number of species varied between years, but without a trend to species enrichment or impoverishment. In all years most species were annuals, and species composition did not change in the course of the experiment. The dominant species were Amaranthus retroflexus, Lamium amplexicaule, Echinochloa crus-galli, Chenopodium album, Silene noctiflora and Thlaspi arvense. Species diversity during the experimental years increased due to decreasing dominance of A. retroflexus.

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Effect of fertilization and use intensity on the diversity and quality of herbage

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis ◽

10.11118/actaun200856020131 ◽

2008 ◽

Vol 56 (2) ◽

pp. 131-138 ◽

Cited By ~ 1

Author(s):

Jiří Skládanka ◽

František Hrabě ◽

Pavel Heger

Keyword(s):

Species Diversity ◽

Species Composition ◽

Dominant Species ◽

Dactylis Glomerata ◽

Individual Species ◽

Experimental Site ◽

Grassland Species ◽

Grass Stand ◽

Different Levels

The objective of the paper is to assess the species composition of grass stands used under regime of two and three cuts, the grassland species diversity and the grassland quality at different levels of nutrition. The experimental site is situated in the Bohemian-Moravian Upland at an altitude of 650 m a.s.l. The subjects of assessment are two-cut and three-cut grass stands with diverse intensities of nutrition: unfertilized, 30 kg ha−1 P and 60 kg ha−1 K fertilized, fertilized with 90 kg ha−1 N+PK, and fertilized with 180 kg ha−1 N+PK. Studied characteristics were as follows: share of dominant species in the harvested herbage, species diversity of the grass stand and grass stand quality. Evaluated were years 2002–2006. The two-cut use promoted development of Dactylis glomerata. The three-cut use promoted development of Poa ssp. The share of Alopecurus pratensis was equable in the two-cut and three-cut grass stands. The dose of N90+PK promoted Dactylis glomerata and was insufficient to increase the share of Alopecurus pratensis and Poa ssp. Fertilization resulted in the decreased share of most present herbs but development of Polygonum bistorta was promoted, namely by the dose of N90+PK. In contrast, the application of PK promoted Trifolium repens. Fertilization had a significant (P < 0.05) influence on the share of individual species in the grassland. Three-cut grass stands exhibited a higher diversity than two-cut grass stands did. Fertilization had a significant (P < 0.05) influence on the decreased species diversity and on the increased grassland quality.

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Cyanobacterial diversity of Petuniabukta, Billefjorden, central Spitsbergen

Polish Polar Research ◽

10.2478/v10183-012-0024-1 ◽

2012 ◽

Vol 33 (4) ◽

pp. 347-368 ◽

Cited By ~ 17

Author(s):

Jiří Komárek ◽

Lubomír Kováčik ◽

Josef Elster ◽

Ondřej Komárek

Keyword(s):

Species Diversity ◽

Species Composition ◽

Dominant Species ◽

The Arctic ◽

Tundra Soils ◽

Ecological Data ◽

Cyanobacterial Diversity ◽

Taxonomic Methods ◽

Taxonomic Groups ◽

Arctic Area

Abstract The diversity of cyanobacterial assemblages from various microhabitats in the Arctic area of Petuniabukta, Billefjorden, central Svalbard, was described. The present article contains the introductory common review of the cyanobacterial diversity and ecological data concerning main habitats, while the characteristics of individual taxonomic groups will be presented in following specific studies. Eight distinct main habitats were recognized, which differed in their species composition and especially the dominant species. More than 80 morphospecies were registered during our investigation, but only about 1/3 of them could be assigned to known and described taxa. The others require additional analyses based on mod- ern taxonomic methods (the polyphasic approach). The composition of cyanobacterial micro- flora was comparable with assemblages in coastal Antarctica. The diversity of unicellular and colonial morphotypes (36 taxa) was higher than other groups. The number of filamentous spe- cies without heterocytes and akinetes, with 30 species, and heterocytous types, with only 20 species, were similar in both of these ecosystems. These numbers will be surely changed in the future, but the overall proportion of different groups will likely stay the same. In contrast to the limited species diversity, simple filamentous aheterocytous species were dominant and formed massive populations. Few heterocytous taxa,mostly groupedwithin the genus Nostoc (N. commune-complex), were dominant in tundra soils.

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SPECIES COMPOSITION OF AMPHIBIAN IN GUNUNGKELIR STREAM, JATIMULYO VILLAGE, KULON PROGO

Jurnal Teknosains ◽

10.22146/teknosains.5988 ◽

2012 ◽

Vol 2 (1) ◽

Author(s):

Tony Febri Qurniawan Dan Trijoko

Keyword(s):

Spatial Distribution ◽

Species Richness ◽

Species Diversity ◽

Species Composition ◽

Dominant Species ◽

Survey Method ◽

Line Transects ◽

Study Species

Gunungkelir stream is located in Jatimulyo village, western part of Daerah Istimewa Yogyakarta Province.The ecosystem that surrounds Gunungkelir stream looks natural and unpolluted, it is possible for good livingenvironment of amphibians. However, the database about diversity of Amphibians in Gunungkelir stream hasnot been revealed. This research was done to study species diversity, species richness, species composition anddistribution of amphibians in Gunungkelir stream as an effort to support the sustainability of amphibians livefrom extinction. The research was done on January-May 2009, at night. The VES (Visual Encounter Survey)method with line transects 250 m were used. A total 11 species of amphibians from 6 different amphibia familieswere identified. Phrynoidis aspera, Leptobrachium hasseltii and Hylarana chalconota are dominant species. Thehigest percentage of amphibians population was tadpole (38%), followed by male (35%), female (21%), and theleast were juvenile (6%). During the survey, different species of amphibians were observed with their own rangeof spatial distribution.

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Diversity of Algae and Cyanobacteria and Bioindication Characteristics of the Alpine Lake Nesamovyte (Eastern Carpathians, Ukraine) from 100 Years Ago to the Present

Diversity ◽

10.3390/d13060256 ◽

2021 ◽

Vol 13 (6) ◽

pp. 256

Author(s):

Petro M. Tsarenko ◽

Olena P. Bilous ◽

Olha M. Kryvosheia-Zakharova ◽

Halyna H. Lilitska ◽

Sophia Barinova

Keyword(s):

Species Composition ◽

Structural Changes ◽

Algal Species ◽

Taxonomic Composition ◽

Alpine Lake ◽

Algal Flora ◽

Ecological Analysis ◽

Modern Species ◽

Eastern Carpathians ◽

Infraspecific Taxa

The species diversity and changes in the structural dynamics of the algal flora from the alpine lake Nesamovyte has been studied for 100 years. During the period of investigations, 234 species (245 infraspecific taxa) were revealed to cover more than 70% of the modern species composition of the studied lake. The modern biodiversity of algae is characterized by an increase in the number of widespread forms, a change from the baseline “montane” complex in comparison to the beginning of the 20th century. Nevertheless, the Nesamovyte Lake still has a unique algae composition that is typical for high-mountainous European lakes. The presence of a different complex of conventionally arctic species of algae, in particular, diatoms is discussed. Structural changes in the taxonomic composition of the algal flora of the lake as well as in the complex of the leading genera, species and their diversity are revealed. An ecological analysis of the algal species composition of the lake showed vulnerability and degradation to the ecosystem of the lake. On this basis, the issue regarding the question of protection and preservation of the algae significance and uniqueness of the flora of algae in the Nesamovyte Lake are discussed.

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