scholarly journals Management and Sustainability of Greek Wetlands

2021 ◽  
Author(s):  
Paraskevi E. Mpeza
Keyword(s):  
Sustainable Agriculture ◽  
Shallow Lakes ◽  
Hydrological Regime ◽  
Dam Construction ◽  
Wetland Function ◽  
Shallow Marine ◽  
National Importance ◽  
Two Generations ◽  
International Importance ◽  
Wetland Types

Greece has today about 400 large and small wetlands. Some of them are international importance and some are considered as national importance. Several of them are composite and form wetland mosaics or complexes. The most common wetland types in Greece are: rivers, estuaries, deltas, lagoons, shallow lakes, shallow marine formations, marshes. Their total area is still quite large (210,000 ha) in spite of the heavy losses that occurred during the last two generations Threats of degradation are drainage, dam construction, irrigation networks, alteration in river morphology such as diversion flow, clearing of natural vegetation which alter hydrological regime and affect wetland function. Sustainable agriculture in the hydrological basins of important wetlands should be considered because these systems are threaten most.

scholarly journals Analysis Of Reed Resource Dynamics In Water Bodies Of Eastern Latvia

2015 ◽  
Vol 1 ◽  
pp. 252
Author(s):  
E. Čubars ◽  
G. Noviks
Keyword(s):  
Shallow Lakes ◽  
Water Body ◽  
Human Activities ◽  
Hydrological Regime ◽  
Climatic Conditions ◽  
Water Bodies ◽  
Natural Processes ◽  
Resource Dynamics ◽  
Main Factors ◽  
Made In

The paper shows the results obtained during the research of reed dynamics revealing that in Eastern Latvia 20 lakes and pisciculture farms are potentially important for the reed extraction. In 2008, the reed resources there covered a territory of approximately 2300 ha. The ortophoto images of potentially important water bodies made in 1997, 2005 and 2008 were analyzed using the computer program ArcMap. The reed growth develops differently in every water body, but in general the eutrophication of water bodies and the enlargement of reed-covered areas can be observed. The most rapidly the reed occupies new territories in pisciculture farms and shallow lakes. The analysis of reed resource dynamics show that reed-covered areas in this region are expanding every year. The main factors that influence the distribution of reed growths refer to human activities, climatic conditions, hydrological regime in water bodies and natural processes of eutrophication.

scholarly journals The importance of offshore areas in southern Öresund, Sweden, for staging and wintering sea ducks

Ornis Svecica ◽  
2015 ◽  
Vol 25 (1–2) ◽  
pp. 24-39
Author(s):  
Martin Green ◽  
Leif Nilsson
Keyword(s):  
Somateria Mollissima ◽  
Time Pattern ◽  
Sea Ducks ◽  
National Importance ◽  
Mergus Merganser ◽  
Winter Peak ◽  
International Importance ◽  
Melanitta Fusca ◽  
Clangula Hyemalis ◽  
General Time

The occurrence of wintering and spring-staging sea ducks in the southern part of Swedish Öresund was surveyed from air and ship during the period 2001–2011. Altogether 22 air and 20 boat surveys were made during the months November–May and here we present the results regarding five commonly recorded sea ducks. We present the numbers recorded and the general time pattern of occurrence during winter and spring in the area. Recorded numbers are then used for evaluating the importance of the area, both in relation to national wintering totals as well as to international (Baltic) totals. Southern Swedish Öresund is of no larger importance for Long-tailed Duck Clangula hyemalis in winter and spring. The area is however of national importance for both Velvet Scoter Melanitta fusca and Common Scoter Melanitta nigra in winter. Peak numbers of Common Scoters do also reach international importance. Southern Swedish Öresund is of large national and international importance for both wintering and spring-staging Eider Somateria mollissima and Red-breasted Merganser Mergus merganser.

scholarly journals River minimum flow changes under dammed reservoir conditions

2021 ◽  
Vol 21 (1) ◽  
pp. 63-71
Author(s):  
Edmund Tomaszewski
Keyword(s):  
Water Management ◽  
Cross Sections ◽  
Hydrological Regime ◽  
Low Flow ◽  
Dam Construction ◽  
Minimum Flow ◽  
Before And After ◽  
Reservoir Conditions ◽  
Flow Changes ◽  
The Difference

Abstract The main aim of this study was to assess what range of downstream low flow changes is caused by dam construction directly. An investigation was based on the assumption that the difference in change ratio of flow between gauging cross-sections located downstream and upstream position of dammed reservoir identifies the scope of changes determined by dam construction. Three dammed reservoirs located on Polish rivers were selected for analysis. They were different in size, hydrological regime and water management purposes. For each reservoir pair of water, gauges were selected. The input data were daily discharge series collected by the Polish Institute of Meteorology and Water Management. For each time series 20-year period before and after dam construction was established. Comparison of annual minimum flow ratios for these peri-ods as well as analysis of low flow dynamics and inertia allowed to identify range and direction of changes caused by investigated reservoirs.

scholarly journals Distribution and Numbers of Three Globally Threatened Waterbird Species Wintering in Morocco: The Common Pochard, Marbled Teal, and White-Headed Duck

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Asmaâ Ouassou ◽  
Mohamed Dakki ◽  
Mohammed-Aziz El Agbani ◽  
Abdeljebbar Qninba ◽  
R’himou El Hamoumi
Keyword(s):  
Migratory Birds ◽  
Moderate Increase ◽  
Large Database ◽  
National Importance ◽  
Waterbird Species ◽  
Adoption And Implementation ◽  
International Importance ◽  
Regional Population ◽  
The Common ◽  
Key Sites

Morocco plays a key role in the life of many migratory birds and their survival, thanks to the diversity and richness of its ecosystems. The International Waterbird Census (IWC) has been regularly implemented in Morocco since 1983. Thanks to this program, a large database on wintering waterbirds’ populations has been collected. In this article, we summarize the wintering data of three globally threatened waterbirds: Aythya ferina, Marmaronetta angustirostris, and Oxyura leucocephala. The population of Aythya ferina, which is declining, is largely distributed in the country, in over a hundred wetlands, 26 of which verify the national importance criteria. Marmaronetta angustirostris has a stable trend over the years even though its population can know high annual fluctuations; it winters in more or less 50 wetlands, among which 18 host more than 1% of its regional population and 16 verify the criteria for national importance. On the contrary, Oxyura leucocephala, a globally endangered bird only encountered in a dozen wetlands, shows a moderate increase in its numbers; only two wetlands verify the Ramsar criterion 6, while a total of six can be considered of national importance. Furthermore, given the conservation statuses of these waterbirds and according to the Ramsar criterion 2, all their hosting sites are of international importance. The results presented in this paper are a crucial step for the adoption and implementation of adequate conservation measures for the species and their key sites. Nevertheless, comprehensive research and coordinated efforts on the factors (ecological and anthropogenic) influencing the species, at the national and international levels, are required for a better understanding of their populations’ dynamics.

scholarly journals About the functional typification of the Podilsk economic-geographical district mineral resources (Ternopil, Khmelnytskyi and Vinnytsia regions)

2019 ◽  
Vol 28 (4) ◽  
pp. 757-768
Author(s):  
Miroslav Y. Syvyi ◽  
Sergey V. Hulyk
Keyword(s):  
Raw Materials ◽  
Geographical Area ◽  
Mineral Resources ◽  
Mineral Waters ◽  
Raw Material ◽  
Mining Sites ◽  
National Importance ◽  
Magmatic Rocks ◽  
Class B ◽  
International Importance

The article offers a functional typification of Podilsk economic and geographical area mineral resources (MR), based on taking into account their influence on the participa- tion of certain industries in the territorial division of labor, complex-forming properties and the realized activity (degree of deposit development) of certain types of minerals and differs from the general Ukrainian (Syvyi, 2011) with several features. Thus, three groups of mineral resources are determined in particular, ac- cording to the first feature: international, national and local; according to the second all types of mineral raw materials are grouped into three classes a, b, and c; three types of mineral deposits a, b and c are identified depending on the degree of development. Besides, the criteria are proposed for classification of some raw materials as strategic. In the presented variant of typification of mineral resources of the region, an attempt was also made to approximate geographical and geological positions in classifications, which will help to define clearly the role and place of mineral resources in the territorial and sectoral structures of the economy, to determine national priorities in the development of mineral and economic resources of the country-raw materials experience in geological practice. The first group (raw material of international importance) in Podillia includes valuable mineral waters such as Naftusia, radon, and sulfide waters, kaolins, graphite, facing stones from magmatic rocks, i.e. raw materials with significant (modern or potential) export potential. The second group (raw material of national importance) is the largest, with the vast majority of mineral resources explored in the region: most types of mineral waters, cement raw materials, construction stones, agrochemical raw materials, some types of technological raw materials and so on. Many of them are characterized by high realized activity, a large number is developed in insufficient quantities or generally not developed because of various reasons (lack of demand, environmental problems, depletion or insufficient exploration of stocks, etc.). The local raw materials include a small number of mineral types - ameliorant, construction sands, and others. Mineral resources with high complex-forming properties are almost absent in the region (except for Naftusia mineral waters, where large recreational complexes are formed). Class B (medium complex-forming properties) includes mineral resources, small mining sites, and centers that are formed based on them (cement raw materials, agrochemical raw materials, kaolins, mineral waters with specific components, etc.). However, the largest amount of mineral resources of the region is not marked by explicit complex-forming properties and is classified as class C. The article draws generalized conclusions about the functional structure of mineral resources of the region, which are revealed by their typification, the priority directions of investments in geological prospecting are offered, which should help to increase and optimize the mineral base of the region.

Quantitative food webs and invertebrate assemblages of a large River: a spatiotemporal approach in floodplain shallow lakes

2017 ◽  
Vol 68 (2) ◽  
pp. 293 ◽  
Author(s):  
Débora A. Carvalho ◽  
Verónica Williner ◽  
Federico Giri ◽  
Carina Vaccari ◽  
Pablo A. Collins
Keyword(s):  
Food Webs ◽  
Shallow Lakes ◽  
Stomach Contents ◽  
Hydrological Regime ◽  
Large River ◽  
Floodplain Lakes ◽  
Food Web Structure ◽  
Trophic Resources ◽  
Key Factor ◽  
Invertebrate Assemblages

To test the hypothesis that the hydrological regime of large Rivers affects the structure of invertebrate communities and food webs in floodplain lakes, we studied invertebrate assemblages and stomach contents of fish and decapods in two shallow lakes in the Paraná River floodplain, Argentina, with different connectivity (indirect and permanent, IPC; direct and temporal, DTC) to the fluvial system over three hydroperiods (flooding, transition, drought). Invertebrate assemblages exhibited temporal variation, with higher dissimilarity during the drought phase. However, zooplanktonic and pleustonic attributes varied spatiotemporally, and were better explained by other environmental variables. The food webs in the two lakes differed, with higher connectance and fewer predators in the DTC Lake. In general, the use of trophic resources by fish and decapods reflected the local and abundant resources in the system. The persistence of communities in floodplain lakes with temporary connectivity to the river may relate to the foraging decisions of consumers to buffer environmental fluctuations. The consumption of abundant resources highlighted the importance of autochthonous inputs into floodplain lakes. However, the variation in food supply as a key factor governing food-web structure and stability should be further investigated.

scholarly journals Assessment of dam construction impact on hydrological regime changes in lowland river – A case of study: the Stare Miasto reservoir located on the Powa River

2016 ◽  
Vol 30 (1) ◽  
pp. 119-125 ◽  
Author(s):  
Mariusz Sojka ◽  
Joanna Jaskuła ◽  
Joanna Wicher-Dysarz ◽  
Tomasz Dysarz
Keyword(s):  
Peak Flow ◽  
Hydrological Regime ◽  
Dam Construction ◽  
Lowland River ◽  
Hydrologic Alteration ◽  
Regime Changes ◽  
Gauge Station ◽  
Range Of Variability Approach ◽  
Positive Effect ◽  
Daily Flows

Abstract The purpose of the presented research is analysis and assessment of the Stare Miasto reservoir impact on the hydrological regime changes of the Powa River. The reservoir was built in 2006 and is located in the central part of Poland. The total area of inundation in normal conditions is 90.68 ha and its capacity is 2.159 mln m3. Hydrological regime alteration of the Powa River is analysed on the basis of daily flows from the Posoka gauge station observed during period 1974–2014. Assessment of hydrological regime changes is carried out on the basis of Range of Variability Approach (RVA) method. All calculations are made by means of Indicators of Hydrologic Alteration (IHA) software version 7.1.0.10. The analysis shows that the Stare Miasto reservoir has a moderate impact on hydrological regime of the Powa River. Construction of the reservoir has positive effect on stability of minimal flows, which are important for protection of river ecosystems. The results obtained indicate that the Stare Miasto reservoir reduces a spring peak flow and enables to moderate control of floods.

scholarly journals Sphagnum mosses of the Male Polissya (Lviv region)

2020 ◽  
pp. 110-120
Author(s):  
Z. Mamchur ◽  
◽  
Yu. Drach ◽  
S. Prytula ◽  
◽  
...  
Keyword(s):  
Coniferous Forest ◽  
Field Research ◽  
Hydrological Regime ◽  
Research Area ◽  
Current Data ◽  
Ecological Groups ◽  
Widespread Species ◽  
Sphagnum Mosses ◽  
National Importance ◽  
Cold Tolerant

The article summarizes current data about the condition and spread of Sphagnum mosses on the territory of Male Polissya in Lviv Region based on the material from our own field research, materials of National Herbarium of Ukraine (KW), the Herbarium National Museum of Natural History of the National Academy of Sci­ences of Ukraine (LWS) and literature data. An annotated list of the species of the genus Sphagnum was compiled and it includes 15 species together with an indication of place and date of collection, the names of collectors, the spread in Ukraine and biotopes in which the species may occur according to The National Habitat Catalogue of Ukraine and EUNIS. Sphagnum fallax (Klinggr.) Klinggr., S. fimbriatum Wils. and S. palustre L. were determined as the most widespread species of the genus Sphagnum in the research area. Two species S. angustifolium and S. inundatum are indicated for the first time for the territory of Lviv region. Six regionally rare species were found: S. capillifolium, S. cuspidаtum, S. fаllax, S. fimbriаtum, S. obtusum and S. papillosum. The possible disappearance of a species Sphagnum centrale, S. contortum, S. flexuosum and S. obtusum on the territory of the Volytsky Botanical Reserve of national importance was established owing to the draining of wetlands. Ecological groups of sphagnum species on the research area were analyzed, where the predominance of subheliophytes (7 species, 46.7 %), hygrophytes (13 species, 86.7 %), cold tolerant species (13 or 87.7 %) and acidophiles (8 species, 53.3 %) was identified. The topicality of the study is determined by the fact that sphagnum mosses are spread much less frequently than other species from the division of bryophytes because they are confined to a narrow range of biotopes. With the drastic changes in the hydrological regime of the environment, which occurred during the second half of the twentieth century, due to the large areas of drained land, the processes of biotope dehydration became irreversible and some species of sphagnum could have disappeared from the territory of Male Polissya. Due to the sensitivity of bryophytes, in particular species of the sphagnum genus, and due to a disturbance of the hydrological regime of wetlands, the waterlogged mixed coniferous forest in the vicinity of the village Kulychkiv is a promising territory for the creation of a new environmentally protected site or the extension of the Volytsky Botanical Reserve of national importance for the purpose of wetlands preservation here.

The Evolution of Music Therapy

2015 ◽  
Vol 26 (4) ◽  
pp. 207-221
Author(s):  
Wolfgang Mastnak
Keyword(s):  
Music Therapy ◽  
Evidence Based Medicine ◽  
Wide Spectrum ◽  
Evidence Based ◽  
Modern Music ◽  
Guided Imagery And Music ◽  
Theoretical Perspectives ◽  
International Importance ◽  
Evolution Of Music ◽  
Based Medicine

Abstract. Five overlapping eras or stages can be distinguished in the evolution of music therapy. The first one refers to the historical roots and ethnological sources that have influenced modern meta-theoretical perspectives and practices. The next stage marks the heterogeneous origins of modern music therapy in the 20th century that mirror psychological positions and novel clinical ideas about the healing power of music. The subsequent heyday of music therapeutic models and schools of thought yielded an enormous variety of concepts and methods such as Nordoff–Robbins music therapy, Orff music therapy, analytic music therapy, regulatory music therapy, guided imagery and music, sound work, etc. As music therapy gained in international importance, clinical applications required research on its therapeutic efficacy. According to standards of evidence-based medicine and with regard to clearly defined diagnoses, research on music therapeutic practice was the core of the fourth stage of evolution. The current stage is characterized by the emerging epistemological dissatisfaction with the paradigmatic reductionism of evidence-based medicine and by the strong will to discover the true healing nature of music. This trend has given birth to a wide spectrum of interdisciplinary hermeneutics for novel foundations of music therapy. Epigenetics, neuroplasticity, regulatory and chronobiological sciences, quantum physical philosophies, universal harmonies, spiritual and religious views, and the cultural anthropological phenomenon of esthetics and creativity have become guiding principles. This article should not be regarded as a historical treatise but rather as an attempt to identify theoretical landmarks in the evolution of modern music therapy and to elucidate the evolution of its spirit.

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