scholarly journals Spontaneous regeneration of Collembola assemblages in a raised bog after human-induced disturbance

2022 ◽  
Vol 169 ◽  
pp. 104233
Author(s):  
Marek Sławski ◽  
Adam Stebel ◽  
Małgorzata Sławska
Keyword(s):  
Raised Bog ◽  
Spontaneous Regeneration

Changes in the Humic Acid–Metal Complexation Characteristics Depending on Humification Degree / Humīnskābju – Metālu Kompleksveidošanās Rakstura Izmaiņas Atkarībā No Humifikācijas Pakāpes

2012 ◽  
Vol 51 (3) ◽  
pp. 228-237
Author(s):  
D. Dudare ◽  
M. Klavins
Keyword(s):  
Humic Acid ◽  
Stability Constants ◽  
Humic Acids ◽  
Complex Stability ◽  
Peat Layer ◽  
Raised Bog ◽  
Complexing Capacity ◽  
Humification Degree ◽  
Complexation Process ◽  
Complex Stability Constants

The aim of this study is to determine the Cu(II) complexing capacity and stability constants of Cu(II) complexes of humic acids isolated from two well-characterized raised bog peat profiles in respect to the basic properties and humification characteristics of the studied peats and their humic acids. The complex stability constants significantly change within the studied bog profiles and are well correlated with the age and decomposition degree of the peat layer from which the humic acids have been isolated. Among factors that influence this complexation process, molecular mass and ability to form micellar structures (supramolecules) of humic substances are of key importance.

Petalomonas sphagnophila (Euglenophyta, Petalomonadales), a new euglenophyte species for Russia

2016 ◽  
Vol 50 ◽  
pp. 112-119
Author(s):  
D. A. Kapustin ◽  
D. A. Philippov ◽  
I. V. Sokolova ◽  
E. S. Gusev
Keyword(s):  
Light Microscopy ◽  
Original Publication ◽  
Raised Bog ◽  
Vologda Region ◽  
First Time

Petalomonas sphagnophila has been found for the first time in Russia from the Shichengskoe raised bog (Vologda Region). Morphology of the species is studied by means of light microscopy and illustrated by original micrographs. The data on its taxonomy, ecology and distribution are given. The name P. sphagnophila was not validly published because no type was indicated in the original publication (Christen, 1962), so we are validating the name by indicating its holotype. P. polytaphrena Skuja, nom. inval. is treated as a synonym of P. sphagnophila. Currently, thirty species of the genus Petalomonas, including P. sphagnophila, are known from Russia.

An analysis of a spontaneous ingrowth of deciduous trees in 70 year old stands of Scots pine

1987 ◽  
Vol 52 ◽  
Author(s):  
N. Lust
Keyword(s):  
Scots Pine ◽  
Red Oak ◽  
Deciduous Trees ◽  
Pedunculate Oak ◽  
Black Cherry ◽  
Height Distribution ◽  
Stem Number ◽  
Pine Stands ◽  
Spontaneous Regeneration ◽  
Scots Pine Stands

In 70  years old homogeneous Scots pine stands, bordered by a hardwood belt, an  analysis was made about the spontaneous ingrowth of natural seedlings. The  analysis involved especially the following points: species and stem number,  influence of the hardwood belts, diameter and height distribution, age,  growth and structure. From the age of 30 years, a spontaneous regeneration of  hardwoods established in Scots pine stands. There are on average 7,000 plants  per ha, 80 % of which are black cherry and another fair number are red oak  and pedunculate oak. The regeneration has an average age of 25 to 30 years,  it is uneven aged, contains several diameter and height classes and has  already partially penetrated the upper stratum.     The spontaneous ingrowth allows to convert in a simple way the homogeneous  coniferous stands into mixed hardwood stands.

scholarly journals How to Assess the Ecological Status of Highly Humic Lakes? Development of a New Method Based on Benthic Invertebrates

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 223
Author(s):  
Dāvis Ozoliņš ◽  
Agnija Skuja ◽  
Jolanta Jēkabsone ◽  
Ilga Kokorite ◽  
Andris Avotins ◽  
...  
Keyword(s):  
Ecological Status ◽  
Working Party ◽  
Nutrient Content ◽  
Humic Lakes ◽  
Raised Bog ◽  
Raised Bogs ◽  
Taxa Richness ◽  
Bog Lakes ◽  
Status Assessment

Highly humic lakes are typical for the boreal zone. These unique ecosystems are characterised as relatively undisturbed habitats with brown water, high acidity, low nutrient content and lack of macrophytes. Current lake assessment methods are not appropriate for ecological assessment of highly humic lakes because of their unique properties and differing human pressures acting on these ecosystems. This study proposes a new approach suitable for the ecological status assessment of highly humic lakes impacted by hydrological modifications. Altogether, 52 macroinvertebrate samples from 15 raised bog lakes were used to develop the method. The studied lakes are located in the raised bogs at the central and eastern parts of Latvia. Altered water level was found as the main threat to the humic lake habitats since no other pressures were established. A multimetric index based on macroinvertebrate abundance, littoral and profundal preferences, Coleoptera taxa richness and the Biological Monitoring Working Party (BMWP) Score is suggested as the most suitable tool to assess the ecological quality of the highly humic lakes.

Properties and structure of raised bog peat humic acids

2013 ◽  
Vol 1050 ◽  
pp. 103-113 ◽  
Author(s):  
Maris Klavins ◽  
Oskars Purmalis
Keyword(s):  
Humic Acids ◽  
Raised Bog

Later Bronze Age Activity in the Somerset Levels

1972 ◽  
Vol 52 (2) ◽  
pp. 269-275 ◽  
Author(s):  
John M. Coles
Keyword(s):  
Bronze Age ◽  
Human Activity ◽  
Sixth Century ◽  
Third Century ◽  
Raised Bog ◽  
First Millennium ◽  
Relationship Of ◽  
The Relationship

SummaryThe evidence of human activity in the Somerset Levels in the first millennium B.C. consists of wooden trackways laid across areas of developing raised bog, and joining small settlements on the higher, drier lands of the Poldens and the Wedmore ridge. The excavation of one of these tracks, of the sixth century B.C., is described. Stray finds of weapons and tools continue to be made by peat-cutters and by archaeologists; the most recent of these finds are a hazelwood peg or truncheon, and a sycamore tent peg, of the fourth or third century B.C. The relationship of the trackways and other finds to the marshside villages at Meare remains to be established.

Efficacy Treatment of Osteoarthritis with Combine Chondroitin and Glucosamine

2021 ◽  
Vol 23 (3) ◽  
pp. 239-244
Author(s):  
Maciej Materkowski
Keyword(s):  
Articular Cartilage ◽  
Cartilage Damage ◽  
Main Principle ◽  
Articular Cartilage Damage ◽  
Spontaneous Regeneration

Osteoarthritis led to the articular cartilage damage and cause different kind of problems – from social to biological. The analysis of existing research unfortunately subjected questioned the reliability of spontaneous regeneration of damaged cartilage, which makes it necessary to focus on the possibilities of protection of the tissue from further its degradation. Treatment of osteoarthritis require to use many drugs, which would lead to slowdown the this process. The aim of below publication is to analyse the practical, clinical biological possibilities of articular cartilage protection with a usage of SYSADOA – (symptomatic slow acting drugs of OA). Osteoarthritis is most frequent disease of the joints and prescription of the SYSADOA should be main principle of that treatment.

scholarly journals Comment on "Soil CO<sub>2</sub>, CH<sub>4</sub> and N<sub>2</sub>O fluxes from an afforested lowland raised peat bog in Scotland: implications for drainage and restoration" by Yamulki et al. (2013)

2013 ◽  
Vol 10 (11) ◽  
pp. 7623-7630 ◽  
Author(s):  
R. R. E. Artz ◽  
S. J. Chapman ◽  
M. Saunders ◽  
C. D. Evans ◽  
R. B. Matthews
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Ghg Emissions ◽  
Peat Bog ◽  
Raised Bog ◽  
Land Use Conversion ◽  
Peatland Restoration ◽  
Carbon Dioxide Equivalents ◽  
Carbon Dioxide Co2 ◽  
Chamber Measurements

Abstract. Yamulki and co-authors address in their recent publication the important issue of net emissions of greenhouse gases (GHGs) from peatlands where land use conversion has taken place. In their case, they studied conversion to forestry versus peatland restoration after a first rotation of plantation forestry. They monitored soil-derived fluxes of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) using opaque chamber measurements on planted and unplanted control treatments (with or without drainage), and an unplanted plot within a restored (felled) block on former lowland raised bog. They propose that their measurements of greenhouse gas (GHG) emissions at these sites suggest that the total net GHG emissions, in 100 yr carbon dioxide equivalents, of the restored peat bog would be higher than that of the peat bog with trees. We believe there are a number of issues with the measurement, calculation and comparison of these greenhouse budgets that may invalidate this conclusion.

Ecology of moss-dwelling rotifers in a raised bog: Differentiation of rotifer communities in microhabitats

Biologia ◽  
2017 ◽  
Vol 72 (2) ◽  
Author(s):  
Irena Bielańska-Grajner ◽  
Tomasz Mieczan ◽  
Anna Cieplok
Keyword(s):  
Species Richness ◽  
Moisture Content ◽  
Dominant Species ◽  
Peat Bogs ◽  
Raised Bog ◽  
Ecological Relationships ◽  
Seasonal Factors ◽  
The Stability ◽  
Endangered Ecosystems ◽  
Rotifer Communities

AbstractPeat bogs play key roles in preserving the stability of ecological relationships, but are some of the fastest disappearing and most endangered ecosystems in Europe. The aims of this study were: (1) to compare the distribution, species richness, diversity, and density of rotifers in microhabitats of a raised bog; and (2) to verify the hypothesis that rotifer density and species composition are dependent on seasonal factors, moss moisture content, and the dominant species of mosses in the microhabitats. Sampling was done monthly from April to November in 2013–2014 in the bog Moszne in eastern Poland (51°27′28.7″ N, 23°07′15.8″ E). The microhabitats sampled included hummocks, slopes, and hollows. A total of 40 rotifer taxa were identified. The highest species richness occurred in the hollows (40), dominated by

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