Response of macroinvertebrates to changes in stream flow and habitat conditions in Dinki watershed, central highlands of Ethiopia

The article touches upon the principles, biological basics and practical progress of introduction of specific and age polyculture of fishes. Using the results of the analysis of literary and long-term native data, there has been offered the gradation of 12 fish species from different families by resistance to habitat conditions. Crucian ( Carassius gibelio ) has been chosen as the most sustainable object of cultivation. There has been taken an attempt to calculate the number of seeding different fish species in polyculture taking into account their physiological features is made. Subject to specific physiological features of the studied species, there was carried out recalculation of their natural reproductive performance in different fish-breeding zones, which is traditionally carried out for a carp ( Cyprinus carpio ). In particular, in the second fish-breeding zone with area of 1 hectare it is possible to breed 120 kg of carp, or 150 kg of crucian, or 75 kg of silver carp ( Hypophthalmichthys ). Overall productivity is made up of a share of fishes in polyculture, but taking into account tolerance of species, it can be lower than productivity calculated for carp. The method of calculation and formulas which give the chance to determine seeding density of fish species for breeding in polyculture have been offered. This technique makes it possible to use trophic preferences and consider tolerance of each species to the conditions of breeding areas.

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Ludwig Mayer, a prominent collector of minerals and his collection in the National Museum in Prague

Journal of the National Museum (Prague), Natural History Series ◽

10.2478/jnmpnhs-2018-0004 ◽

2018 ◽

Vol 187 (1) ◽

pp. 65-84

Author(s):

Miroslav Radoň ◽

Dalibor Velebil

Keyword(s):

National Museum ◽

The Core ◽

Geological Conditions ◽

Central Highlands

Ludwig Mayer (*1879, †?) was an significant collector of minerals from Bílina near Teplice. He personally searched minerals in terrain. He also purchased large amount of minerals from dealers or exchanged with other collectors. He deserved a number of interesting or completely new mineralogical findings, which were enriching the overall knowledge of mineralogical conditions of the Bohemian Central Highlands. Many of his findings were published by profesor Josef Emanuel Hibsch (*1852, †1940), the greatest expert on geological conditions of the Bohemian Central Highlands. From 1939 to 1945 Mayer was the manager of geological collections of the museum in Teplice. A total of 596 pieces of minerals from the Mayer’s collection came to the systematic part of the mineralogical collection of the National Museum in Prague. The core of this amount consists of documentary valuable minerals from several important mineralogical sites of the Central Bohemian Highlands, such as Dolní Zálezly, Církvice, Mariánská Rock in Ústí nad Labem, Radejčín and new site Chudoslavice with yellow crystals of chabazite, discovered by Mayer. A total of 54 samples of minerals from the Mayer collection were selected for the newly prepared permanent exhibition of minerals of the National Museum in Prague.

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Species Diversity in Grassland Communities Under Different Habitat Conditions

Polish Journal of Natural Science ◽

10.2478/v10020-009-0005-y ◽

2009 ◽

Vol 24 (1) ◽

pp. 43-59

Author(s):

Magdalena Jastrzębska ◽

Tadeusz Szarejko ◽

Czesław Hołdyński ◽

Wiesław Piotr Jastrzębski

Keyword(s):

Species Diversity ◽

Habitat Conditions ◽

Grassland Communities

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Building pilot model of community organizing for new rural construction in the extremely difficult communes in poor districts of the North West, Central Highlands and South West - Results and issues

Tạp chí Nghiên cứu dân tộc ◽

10.25073/0866-773x/57 ◽

2018 ◽

Author(s):

Ngo Quang Son

Keyword(s):

Community Organizing ◽

North West ◽

The North ◽

Pilot Model ◽

South West ◽

West Central ◽

Central Highlands ◽

Rural Construction ◽

New Rural Construction

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SOME FACTORS OF COMMUNICATION TOURISM TYPES AFFECT THE TRADITIONAL CULTURE OF ETHNIC MINORITIES IN THE CENTRAL HIGHLANDS

Tạp chí Nghiên cứu dân tộc ◽

10.25073/0866-773x/395 ◽

2020 ◽

Vol 9 (1) ◽

Author(s):

Nguyen Duy Dung

Keyword(s):

Economic Development ◽

Cultural Values ◽

Ethnic Groups ◽

Ethnic Minorities ◽

Cultural Preservation ◽

Economic Sectors ◽

Community Tourism ◽

Tourism Activity ◽

Central Highlands ◽

Practical Implications

The Central Highlands is an area with a large community of ethnic minorities to be living. In the process of integration into the world economy, community tourism are one of the economic sectors that are interested in developing in our country in general and the Central Highlands area in particular.Although the activity has not been long, but it can be said that tourism and community tourism are the basis and premise to contribute to the socio-economic development of the Central Highlands; contribute to restoring many traditional cultural values of ethnic groups. For a variety of subjective and objective reasons, tourism activity and community tourism have affected ethnic lifestyles, customs and culture in both positive and limited ways. This is an issue that needs to be considered for research, with practical implications for sustainable tourism activities to create momentum for economic development and cultural preservation of ethnic groups in the Central Highlands area in the period of accelerating industrialization, nationalization and international economic integration.

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