scholarly journals Amount of Soil Carbon Stock within Primary and Secondary Forest in the North of the Republic of Congo

2017 ◽  
Vol 2 (2) ◽  
pp. 159
Author(s):  
Suspense Averti IFO ◽  
Félix Koubouana ◽  
Stoffenne Binsangou ◽  
Ampali Parfait ◽  
Batsa Marcelle
Keyword(s):  
Carbon Stock ◽  
Secondary Forest ◽  
Primary Forest ◽  
Republic Of Congo ◽  
Soil C ◽  
Soil Carbon Stock ◽  
North East ◽  
The North ◽  
The Republic ◽  
Land Types

<p><em>The amount of carbon stock under different land type’s cover </em><em>was studied in </em><em>the north east of Republic of Congo. </em><em>Samples of soil from the surface 0-15 cm horizon were collected under 12 land types classes. Results showed that the lowest soil C was noted in flooded primary forests of Lophira alata Banks ex Gaertu. </em><em>W</em><em>ith an amount of 17.21 t C ha<sup>-1</sup>, and the highest values were noted in the savanna of Jardinea congoensis with an amount of 117.6 t C ha<sup>-1</sup> and the primary forest of Guibourtia demeusei (Harms) Léon. With 116.16 t C ha<sup>-1</sup></em><em> </em><em>(p </em><em>&lt; 0.05).</em><em></em></p><em>Our study revealed the importance of carbon stock in different type of land in tropical area to reduce the emission of CO<sub>2</sub> from the conversion of forestland to another type of land.</em>

scholarly journals Tree Species Diversity, Richness, and Similarity in Intact and Degraded Forest in the Tropical Rainforest of the Congo Basin: Case of the Forest of Likouala in the Republic of Congo

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Suspense Averti Ifo ◽  
Jean-Marie Moutsambote ◽  
Félix Koubouana ◽  
Joseph Yoka ◽  
Saint Fédriche Ndzai ◽  
...  
Keyword(s):  
Species Diversity ◽  
Tree Species ◽  
Secondary Forest ◽  
Diversity Index ◽  
Shannon Index ◽  
Congo Basin ◽  
Primary Forest ◽  
Species Structure ◽  
Republic Of Congo ◽  
The Republic

Trees species diversity, richness, and similarity were studied in fifteen plots of the tropical rainforests in the northeast of the Republic of Congo, based on trees inventories conducted on fifteen 0.25 ha plots installed along different types of forests developed on terra firma, seasonally flooded, and on flooded terra. In all of the plots installed, all trees with diameter at breast height, DBH ≥ 5 cm, were measured. The Shannon diversity index, species richness, equitability, and species dominance were computed to see the variation in tree community among plots but also between primary forest and secondary forest. A total of 1611 trees representing 114 species and 35 families were recorded from a total area of 3.75 ha. Euphorbiaceae was the dominant family in the forest with 12 species, followed by Fabaceae-Mimosoideae (10 species) and Phyllanthaceae (6 species) and Guttiferae (6 species). The biodiversity did not vary greatly from plot to plot on the whole of the study area (3.75 ha). The low value of Shannon index was obtained in plot 11 (H′=0.75) whereas the highest value was obtained in plot 12 (H′=4.46). The values of this index vary from 0.23 to 0.95 in plots P11 and P15, respectively. Results obtained revealed high biodiversity of trees of the forest of Impfondo-Dongou. The information on tree species structure and function can provide baseline information for conservation of the biodiversity of the tropical forest in this area.

Peculiarities of the course of the postpartum period in domestic reindeer females, its morphophysiology and behavioral reactions in the North-East of Russia (Republic of Sakha)

2020 ◽  
pp. 99-105
Author(s):  
V. Fedorov ◽  
E. Sleptsov ◽  
K. Plemyashov
Keyword(s):  
Postpartum Period ◽  
Reproductive Function ◽  
Complex Problem ◽  
Climatic Conditions ◽  
Taiga Zone ◽  
Behavioral Reactions ◽  
North East ◽  
The North ◽  
The Republic ◽  
Mountain Taiga

A growth in the number of deer and an increase in their productivity are closely related to the solution of the complex problem of reproduction and rational use of deer females. Significant damage to reindeer husbandry is caused by the barrenness of northern domestic deer, the level of which has been quite high in recent years. So, in the Republic of Sakha, on 01.01.2020, the number of domesticated reindeer was 152,068, of which female deer and heifers — 71,818, offspring per 100 females — 59, business yield amounted to 52 fawns per 100 females. The causes of infertility are very diverse, as the natural and climatic conditions of the breeding zones have a significant influence on the reproductive function of reindeer. In Yakutia, the main population of northern domestic deer is bred in mountain taiga and tundra natural-climatic zones, so there are about 55 thousand deer in the mountain taiga zone and more than 65 thousand deer in the tundra zone. In this regard, the study of the peculiarities of the postpartum period course in domestic reindeer females, its morphophysiology, and behavioral reactions depending on the natural and climatic conditions of breeding is of great importance.

Features of the course of birth in northern domestic deer in the conditions of the North-East of Russia (Yakutia)

2021 ◽  
pp. 23-28
Author(s):  
V. Fedorov ◽  
T. Ippolitova ◽  
E. Sleptsov ◽  
K. Plemyashov
Keyword(s):  
Living Environment ◽  
Behavioral Reactions ◽  
Climatic Zones ◽  
North East ◽  
The North ◽  
The Republic ◽  
A Minor ◽  
Harsh Conditions ◽  
Generic Process

Purpose: Determination of the peculiarities of the behavior and the flow of childbirth in females (wrenches) of the northern home deer of the Even Breed of the Republic of Sakha (Yakutia), depending on the natural climatic zone of breeding.Material and research methods. Research of the reservation of the hotel's reservoir of the northern home deer was held from April to June in the reindeer herds of the mountain-taiga (FSUE «Yuchjuyuskoye») and the Tundrov zones (SHPZK «Taba-Yana») of the Republic of Sakha (Yakutia) in the conditions of nomadic home reindeer herding since 2013 2018 In the study, the method of observation is used with the registration of motor activity of animals and the activities of individual bodies in a certain living environment.Results. To fix some patterns and species features of the generic process, 8 main elementary behavioral reactions spent venizables of northern domestic deer per day before childbirth: walking, feeding feed, chewing, leisure standing, rest lying, sleep, urination (how many times / total time), defecation (how many times / total time). Also marked 4 behavioral reactions on the hotel day: the exploitation time of the fetus, the licking of the calf, the time of the calf on his feet after delivery, the first reception of the mosper calf after birth. For each parameter, data reflected in tabular format is obtained.Conclusion. It has been established that the degree of adaptation of the northern domestic deer to the harsh conditions of existence in various natural-climatic zones of the Republic of Sakha (Yakutia) is very high, which is manifested in a minor difference in the duration of the generic process and behavioral reactions at the vainer of the mountain and tundra and tundra dilution zones.

scholarly journals Psychiatry in Ireland

2009 ◽  
Vol 6 (2) ◽  
pp. 36-38 ◽  
Author(s):  
Zahid Latif
Keyword(s):  
Northern Ireland ◽  
European Economic Community ◽  
Total Population ◽  
Economic Community ◽  
Republic Of Ireland ◽  
North West ◽  
North East ◽  
The North ◽  
The United Kingdom ◽  
The Republic

Ireland is the third largest island in Europe and the twentieth largest island in the world, with an area of 86 576 km2; it has a total population of slightly under 6 million. It lies to the north-west of continental Europe and to the west of Great Britain. The Republic of Ireland covers five-sixths of the island; Northern Ireland, which is part of the United Kingdom, is in the north-east. Twenty-six of the 32 counties are in the Republic of Ireland, which has a population of 4.2 million, and its capital is Dublin. The other six counties are in Northern Ireland, which has a population of 1.75 million, and its capital is Belfast. In 1973 both parts of Ireland joined the European Economic Community. This article looks at psychiatry in the Republic of Ireland.

scholarly journals ORGANIC MATTER IN AREAS UNDER SECONDARY FORESTS AND PASTURE

CERNE ◽  
2017 ◽  
Vol 23 (3) ◽  
pp. 283-290
Author(s):  
Carlos Eduardo Gabriel Menezes ◽  
Roni Fernandes Guareschi ◽  
Marcos Gervasio Pereira ◽  
Lúcia Helena Cunha Anjos ◽  
Maria Elizabeth Fernandes Correia ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Carbon ◽  
Carbon Stock ◽  
Secondary Forest ◽  
Intermediate Stage ◽  
C3 Plants ◽  
Secondary Forests ◽  
Forest Fragments ◽  
Forest Fragment ◽  
Soil Carbon Stock

ABSTRACT The objective of this study was to evaluate the soil carbon stock (Stock C) and bulk density, the chemical and granulometric fractions of the organic matter and the isotopic signal of the soil δ13C in forest fragments and a mixed managed pasture (MMP). The study was carried out in the municipality of Pinheiral, State of Rio de Janeiro. The evaluated areas were: fragment of secondary forest in initial stage (SFIS) with 20 years of regeneration; fragment of secondary forest in intermediate stage (SFINS), with 25 years of regeneration; advanced secondary forest fragment (SFAS) with 60 years of regeneration and mixed pasture managed (MHP). The attributes related to soil carbon showed significant responses to the effects of land degradation / recovery processes, especially for the following indicators: total organic carbon, organic matter stock and particulate organic matter. No significant alterations for humic substances, and prevalence of the humin fraction was found. The most significant changes in δ13C values occurred up to the depth of 60 cm. In the grassland area, at 0-10 cm, 67% of the carbon stock comes from C4 plants, reducing in the subsequent layers. In SFINS and SFAS areas, at 0-10 cm, the contribution of C3 plants was significant, with minor changes in depth.

scholarly journals Distribution of trematodes in waterfowl of Pavlodar Oblast (Kazakhstan)

2020 ◽  
Vol 10 (4) ◽  
pp. 279-281
Author(s):  
K.K. Akhmetov ◽  
D.G. Maralbaeva ◽  
A.V. Matsyura
Keyword(s):  
Migratory Birds ◽  
Climatic Conditions ◽  
North East ◽  
The North ◽  
The Republic

The article presents the parasitological studies of Trematoda, collected by complete helminthological dissections of birds in the Pavlodar region of the Republic of Kazakhstan. In Pavlodar region, we have currently diagnosed among the Trematoda, the presence of 16 species belonging to four subgenera and seven families. We supposed that there is a local pest-spot of Prosthogonimidae and Echinistomatidae in the north-east of Kazakhstan, because we have found marites in young migratory birds. We noted that the pest-spot of Echinostomatidae and Echinistomatidae (in years with their registration) in the territory of Pavlodar region was broad enough, because the trematode marites of these families were registered from the birds, sampled at the geographically remote waterbodies. We revealed that the hotspots of Prosthogonimidae localization varied, which was most likely determined by the annual climatic conditions.

scholarly journals Litter and Soil Carbon Stock in Cultivated and Natural Area of Intergrated Forest for Conservation Education of Wan Abdul Rachman Great Forest Park

2017 ◽  
Vol 21 (3) ◽  
pp. 171-178
Author(s):  
Leoni Dellta Ellannia ◽  
Agus Setiawan ◽  
Ainin Niswati
Keyword(s):  
Soil Carbon ◽  
Carbon Stock ◽  
Secondary Forest ◽  
Carbon Sink ◽  
Conservation Education ◽  
Natural Area ◽  
Soil Carbon Stock ◽  
Forest Park ◽  
Significant Difference ◽  
The Difference

Intergrated Forest for Conservation Education of Wan Abdul Rachman (IFCE WAR) Great Forest Park is a conservation forest zone which has natural area and cultivated area.  The natural area in Wan Abdul Rachman Great Forest Park consists of secondary forest, whereas the cultivated area consists of agroforestry with cacao plants and agroforestry with coffee plants. The different land use in both areas caused the difference in carbon sink specifically in litter and soil. The research was aimed to study the difference of litter and soil carbon stock in natural and cultivated area in IFCE WAR Great Forest Park.  The observation plots included in the current study was determined using purposive sampling method. The research was conducted in June until August 2015. Data was analyzed using analysis of variance and continued with honestly significant difference test. The results showed that there was no difference of litter carbon stock in cultivated area and natural area in IFCE WAR Great Forest Park, whereas the soil carbon stock in natural area was higher than that in cultivated area.

scholarly journals Study of changes in carbon stock in primary and secondary forest in protection forest of Soya Village, Ambon City

2021 ◽  
Vol 883 (1) ◽  
pp. 012078
Author(s):  
L Siahaya ◽  
L Pelupessy ◽  
Y D Komul ◽  
A Sahupala ◽  
T E Siahaya ◽  
...  
Keyword(s):  
Organic Matter ◽  
Carbon Content ◽  
Water Content ◽  
Carbon Stock ◽  
Secondary Forest ◽  
Primary Forest ◽  
Secondary Forests ◽  
Protection Forest ◽  
Litter Biomass ◽  
Wet Weight

Abstract This study aimed to determine changes in litter biomass and the effect of changes in litter biomass on carbon stock changes in Permanent Sample Plots of primary and secondary forest in the Protection Forest of Soya Village, Ambon City, for three years of measurement. This study used a sampling method with harvesting/collection and using laboratory analysis, where the working procedure used the SNI: 7724 guidelines. The data taken includes the water content of litter, total wet weight, dry weight of the sample, and wet weight of the sample to calculate the range of biomass or organic matter and carbon content of litter organic matter. The results showed that the average value of water content in both primary and secondary forests decreased. The depletion degree was higher in the first year than the second and third year. The biomass content of litter in primary forests decreased from year to year for three years of measurement. It causes a decrease in the carbon content in the primary forest. In contrast, the biomass content in secondary forests increased from year to year and increased carbon content from year to year for three years of measurement.

scholarly journals Prospects for the development of the energy complex of the North-East of Russia

2021 ◽  
Vol 23 (3) ◽  
pp. 73-84
Author(s):  
N. S. Volotkovskaya ◽  
A. S. Semenov ◽  
Y. V. Bebikhov ◽  
V. A. Shevchuk ◽  
O. V. Fedorov
Keyword(s):  
Electric Power ◽  
Power Supply ◽  
Electricity Consumption ◽  
Energy Sector ◽  
Electricity Production ◽  
Energy Complex ◽  
North East ◽  
The North ◽  
Current State ◽  
The Republic

THE PURPOSE. To analyze scenarios for the development of the energy complex of one of the regions of the North-East of Russia for the period up to 2030 with a target vision until 2050. This will require an analysis of the current state of the energy complex; show the latest changes in the power supply system; propose promising areas for the transfer of electricity. METHODS. To assess the current state of the electric power industry, from the point of view of the most efficient use of natural energy resources and the potential of the energy sector of the economy, methods of collecting and processing statistical data were applied. For the technical assessment of the state of electric power facilities, analytical and logical- probabilistic methods for determining reliability were applied. To predict energy consumption, mathematical modeling methods were used with the construction of approximating polynomials. RESULTS. The article evaluates the strategic and moderate scenarios for the development of the energy sector of the Republic of Sakha (Yakutia) in modern conditions, taking into account the increase in the energy efficiency of the region's economy. The indicators of electricity consumption throughout the republic, the Western Energy District and the decentralized power supply zone were subject to assessment. Long-term forecasts made do not confirm the development of events according to a more stringent strategic scenario. At the same time, the results for the moderate scenario are fully correlated with both the current state of the energy sector and the prospects for its development. CONCLUSION. Analysis of the current state and assessment of scenarios for the development of the energy sector of the republic's economy showed an increase in the reliability of power supply systems when organizing a "ring" in the Western Energy District; increase in useful electricity consumption by 2030; increase in electricity production; changes in the structure of electricity production.

scholarly journals Prospects for identifying the Mississippi Valley type deposits in the North-East of Russia

LITOSFERA ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 254-270
Author(s):  
A. L. Galyamov ◽  
A. V. Volkov ◽  
K. Yu. Murashov ◽  
N. V. Sidorova ◽  
T. P. Kuznetsova
Keyword(s):  
Sedimentary Basins ◽  
Raw Material ◽  
Mississippi Valley ◽  
Material Base ◽  
North East ◽  
The North ◽  
Lead And Zinc ◽  
The Republic ◽  
Mississippi Valley Type ◽  
Valley Type

Research subject. The Mississippi Valley type deposits make up about a third of the global balance of lead and zinc reserves, resources and production. Additionally, silver, antimony, arsenic, barium, bismuth, cadmium, cobalt, gallium, indium, mercury, molybdenum, nickel and thallium can be present in the ores of these deposits. In the North-East of Russia, the Mississippi Valley type of deposits is poorly represented. In this work, we investigate the deposits of the Sardana ore cluster of the Republic of Sakha (Yakutia) and individual deposits of the Magadan region. Materials and methods. The article discusses the results of previous scientific research and new data on the geochemical features, isotopic composition of ores and geological and structural conditions for the formation of the Sardana cluster deposit. In addition, the potential for identifying stratiform lead-zinc deposits is associated with favourable geodynamic conditions in the region, as well as with the refinement and adaptation of the forecast-search model of MVT deposits for the North-East of Russia. Results. The mineralogical and geochemical features of the rocks and ores of the Sardana cluster deposits, the morphology of ore bodies, their zoning elements, as well as isotopic ratios indicate that the ores are likely to be of the Mississippi Valley type with the onset of ore deposition at early diagenetic and catagenetic stages. The distribution of rare elements indicates a significant role of superimposed metamorphism of the host carbonate-terrigenous strata in the deposition of the ores of producing stages. Conclusion. The potential possibility of increasing the mineral and raw material base of lead and zinc is associated with the identification of sedimentary basins with a stagnant anoxic regime of carbonate accumulation in the immediate vicinity of the development areas of rift complexes, as well as with the presence of other critically important forecast-search signs. In addition to the well-known Killakh metallogenic zone, Tuora-Sis and Orulgan metallogenic taxa located in the north of the Republic of Sakha (Yakutia) with known stratiform manifestations of lead and zinc belong to such areas.

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