scholarly journals Freshwater gastropods of the western part of the Kola Peninsula and northern Karelia (northern Europe)

2021 ◽  
Vol 31 (4) ◽  
pp. 147-175
Author(s):  
Ivan O. Nekhaev
Keyword(s):  
Species Composition ◽  
Kola Peninsula ◽  
Barents Sea ◽  
Common Species ◽  
Northern Taiga ◽  
Northern Europe ◽  
Indigenous Species ◽  
Freshwater Gastropods ◽  
Distribution Maps ◽  
Species Composition And Distribution

The species composition and distribution of freshwater gastropods in the western part of the Kola Peninsula and northern Karelia has been studied. The explored region lies in the far north of Europe and covers several landscape zones: from the northern taiga to the tundra. In sum, seventeen species were found, for each of them the distribution maps and photographs of intraspecific forms of conchological variability are presented. The taxonomic remarks are also given when appropriate. Gyraulus acronicus (Planorbidae) and Ampullacena balthica (Lymnaeidae) are the most common species in the studied region. Two species ( Ampullacena balthica and Galba truncatula ) have been recorded in the Barents Sea islands off the Kola Peninsula. A single non-indigenous species, Physella acuta (Physidae) has been registered in the studied territory. Based on the results of a comparison of the faunas of gastropods from various areas within the whole territory studied and other regions of northern Europe and Western Siberia, it has been shown that the most dramatic reduction in the species composition occurs during the transition from taiga to tundra landscapes.

scholarly journals Myxomycetes of boreal forests of the Laplandskiy State Nature Biosphere Reserve (Kola Peninsula, Russia) Yuri

Karstenia ◽  
2020 ◽  
pp. 292-315
Author(s):  
Yuri K. Novozhilov ◽  
Oleg N. Shchepin ◽  
Vladimir I. Gmoshinskiy ◽  
Martin Schnittler
Keyword(s):  
Kola Peninsula ◽  
Boreal Forests ◽  
Biosphere Reserve ◽  
Common Species ◽  
Northern Taiga ◽  
Shannon Index ◽  
Peat Moss ◽  
Moist Chamber ◽  
Chao1 Estimator ◽  
State Nature

Northern taiga forests and subalpine plant communities of the Laplandskiy State Nature Biosphere Reserve (Kola Peninsula, Russia) were surveyed for myxomycetes. A total of 1675 specimens of myxomycete fruit bodies (sporocarps) were registered, among them 1584 records from field collections and 92 obtained from 210 moist chamber cultures of ground litter, bark of living trees, wood, and weathered dung of moose and willow ptarmigan. Most of 125 taxa (124 morphospecies and one variety) representing 34 genera were recorded only in the field (104 taxa from 32 genera), but some were exclusively obtained from moist chamber cultures (8 taxa from 5 genera). All of the recorded species are new for the Laplandskiy Reserve. Species numbers decreased among the four studied forest associations along the elevation and mositure gradient, and the Shannon index showed a similar trend: spruce forest (PICa; 84 taxa, H’=3.8), spruce-peat moss forest (PICb; 70, 3.5), dry spruce-pine forest (PIN; 62, 3.7), subalpine birch forest (SB; 30, 2.7). The estimated completeness of the survey according to the Chao1 estimator was 66%, indicating that most of the more common species should have been recovered. The trend among forest associations runs mainly parallel to diversity: PICa and PICb 83%, PIN 47%, SB 57%. The myxomycete assemblage of dry coniferous forests is the most distinctive among the three forest types and shows the highest number of indicator species. The overall degree of specialization of myxomycetes is higher for substrate type than for forest associations. Among substrate types, species diversity and richness increase from litter over bark to wood.

scholarly journals Distribution of shell gastropods in the open parts of the Barents Sea: a preliminary analysis

2021 ◽  
Vol 12 (3-2021) ◽  
pp. 135-140
Author(s):  
Z.Yu. Rumiantseva ◽  
◽  
I.O. Nekhaev ◽  
Keyword(s):  
Species Composition ◽  
Preliminary Analysis ◽  
Barents Sea ◽  
Geographic Location ◽  
Coastal Regions ◽  
The Barents Sea ◽  
Faunal Complexes ◽  
Species Composition And Distribution

Species composition and distribution of shell-bearing gastropods in the Barents Sea has been described only for coastal regions. We used material from 247 stations (530 samples) remoted from the coast. In some cases, the distribution of mollusks depended on the type of substrate, and in others, only geographic location was revealed. The latter is probably due to hydrological factors or the presence of historically formed faunal complexes. The use of different approaches to the removal of uninformative samples during analysis gives similar results.

Species composition and distribution of marine macro algae at Co To and Thanh Lan archipelago

2020 ◽  
Vol 20 (3) ◽  
pp. 267-276
Author(s):  
Dam Duc Tien ◽  
Nguyen Thi Mai Anh ◽  
Linh Manh Nguyen ◽  
Pham Thu Hue ◽  
Lawrence Liao
Keyword(s):  
Species Composition ◽  
Littoral Zone ◽  
Marine Algae ◽  
Similarity Coefficient ◽  
Algal Flora ◽  
Average Value ◽  
Site Number ◽  
Species Composition And Distribution ◽  
Total Species ◽  
Macro Algae

This paper exhibites species composition and distribution of marine seaweed at 10 sites of Co To and Thanh Lan islands in May 2019. The studies record 76 species of marine algae in the area, belonging to four divisions: Cyanophytes, Rhodophytes, Ochrophytes and Chlorophytes. Among them, five species are classified into Cyanophytes (comprising 6.6% of total species); thirty-four species into Rhodophytes (44.7%); twenty-one species into Ochrophytes/Phaeophytes (27.6%) and sixteen species into Chlorophytes (21.1%). The species composition of marine seaweeds in Co To and Thanh Lan shows significant differences as follows: 22 species (sites number 4 and 10) to 58 species (site number 2) and the average value is 38.7 species per site. Sørensen similarity coefficient fluctuates from 0.33 (sites number 5 and 10) to 0.84 (sites number 1 and 3) and the average value is 0.53. The current investigations show that four species of twenty-one species are collected in the littoral zone and forty-two species in the sub-littoral zone (in which there are thirteen species distributed in both littoral zone and sub-littoral zone). The algal flora in Co To and Thanh Lan is characterized by subtropics.

Long-term dynamics and destruction of marsh vegetation in the Kolokolkova Bay of the Barents Sea

2012 ◽  
pp. 66-77 ◽  
Author(s):  
I. A. Lavrinenko ◽  
O. V. Lavrinenko ◽  
D. V. Dobrynin
Keyword(s):  
Species Composition ◽  
Plant Communities ◽  
Barents Sea ◽  
Mean Value ◽  
Marsh Vegetation ◽  
Composition And Structure ◽  
The Mean ◽  
Species Composition And Structure

The satellite images show that the area of marshes in the Kolokolkova bay was notstable during the period from 1973 up to 2011. Until 2010 it varied from 357 to 636 ha. After a severe storm happened on July 24–25, 2010 the total area of marshes was reduced up to 43–50 ha. The mean value of NDVI for studied marshes, reflecting the green biomass, varied from 0.13 to 0.32 before the storm in 2010, after the storm the NDVI decreased to 0.10, in 2011 — 0.03. A comparative analysis of species composition and structure of plant communities described in 2002 and 2011, allowed to evaluate the vegetation changes of marshes of the different topographic levels. They are fol­lowing: a total destruction of plant communities of the ass. Puccinellietum phryganodis and ass. Caricetum subspathaceae on low and middle marches; increasing role of halophytic species in plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. typicum on middle marches; some changes in species composition and structure of plant communities of the ass. Caricetum glareosae vic. Calamagrostis deschampsioides subass. festucetosum rubrae on high marches and ass. Parnassio palustris–Salicetum reptantis in transition zone between marches and tundra without changes of their syntaxonomy; a death of moss cover in plant communities of the ass. Caricetum mackenziei var. Warnstorfia exannulata on brackish coastal bogs. The possible reasons of dramatic vegetation dynamics are discussed. The dating of the storm makes it possible to observe the directions and rates of the succession of marches vegetation.

Changes in the species composition and distribution of butterflies (Rhopalocera) in Cracow (Poland) since the mid-19th century

2005 ◽  
Vol 48 (2) ◽  
pp. 181-215 ◽  
Author(s):  
Edward Palik ◽  
Łukasz Przybyłowicz ◽  
Andrzej Kosior ◽  
Wiesław Król ◽  
Wojciech Solarz ◽  
...  
Keyword(s):  
Species Composition ◽  
19Th Century ◽  
Species Composition And Distribution
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