Cyanobacterial diversity of Petuniabukta, Billefjorden, central Spitsbergen

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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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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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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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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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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Phylogenetic paleoecology: macroecology within an evolutionary framework

Paleobiology ◽

10.1017/pab.2020.61 ◽

2021 ◽

Vol 47 (2) ◽

pp. 171-177

Author(s):

James C. Lamsdell ◽

Curtis R. Congreve

Keyword(s):

Species Diversity ◽

Spatial Variation ◽

Geographic Distribution ◽

Evolutionary Biology ◽

Phylogenetic Signal ◽

Evolutionary Rates ◽

The Other ◽

Ecological Data ◽

Temporal And Spatial Variation ◽

Temporal And Spatial

The burgeoning field of phylogenetic paleoecology (Lamsdell et al. 2017) represents a synthesis of the related but differently focused fields of macroecology (Brown 1995) and macroevolution (Stanley 1975). Through a combination of the data and methods of both disciplines, phylogenetic paleoecology leverages phylogenetic theory and quantitative paleoecology to explain the temporal and spatial variation in species diversity, distribution, and disparity. Phylogenetic paleoecology is ideally situated to elucidate many fundamental issues in evolutionary biology, including the generation of new phenotypes and occupation of previously unexploited environments; the nature of relationships among character change, ecology, and evolutionary rates; determinants of the geographic distribution of species and clades; and the underlying phylogenetic signal of ecological selectivity in extinctions and radiations. This is because phylogenetic paleoecology explicitly recognizes and incorporates the quasi-independent nature of evolutionary and ecological data as expressed in the dual biological hierarchies (Eldredge and Salthe 1984; Congreve et al. 2018; Fig. 1), incorporating both as covarying factors rather than focusing on one and treating the other as error within the dataset.

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Toward a global reference database of COI barcodes for marine zooplankton

Marine Biology ◽

10.1007/s00227-021-03887-y ◽

2021 ◽

Vol 168 (6) ◽

Author(s):

Ann Bucklin ◽

Katja T. C. A. Peijnenburg ◽

Ksenia N. Kosobokova ◽

Todd D. O’Brien ◽

Leocadio Blanco-Bercial ◽

...

Keyword(s):

Species Diversity ◽

Dna Sequences ◽

Reference Sequence ◽

Global Ocean ◽

Reference Database ◽

Data Repositories ◽

Marine Zooplankton ◽

The North ◽

Coi Sequences ◽

Taxonomic Groups

AbstractCharacterization of species diversity of zooplankton is key to understanding, assessing, and predicting the function and future of pelagic ecosystems throughout the global ocean. The marine zooplankton assemblage, including only metazoans, is highly diverse and taxonomically complex, with an estimated ~28,000 species of 41 major taxonomic groups. This review provides a comprehensive summary of DNA sequences for the barcode region of mitochondrial cytochrome oxidase I (COI) for identified specimens. The foundation of this summary is the MetaZooGene Barcode Atlas and Database (MZGdb), a new open-access data and metadata portal that is linked to NCBI GenBank and BOLD data repositories. The MZGdb provides enhanced quality control and tools for assembling COI reference sequence databases that are specific to selected taxonomic groups and/or ocean regions, with associated metadata (e.g., collection georeferencing, verification of species identification, molecular protocols), and tools for statistical analysis, mapping, and visualization. To date, over 150,000 COI sequences for ~ 5600 described species of marine metazoan plankton (including holo- and meroplankton) are available via the MZGdb portal. This review uses the MZGdb as a resource for summaries of COI barcode data and metadata for important taxonomic groups of marine zooplankton and selected regions, including the North Atlantic, Arctic, North Pacific, and Southern Oceans. The MZGdb is designed to provide a foundation for analysis of species diversity of marine zooplankton based on DNA barcoding and metabarcoding for assessment of marine ecosystems and rapid detection of the impacts of climate change.

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