scholarly journals Măsuri de întărire a capacității de adaptare la schimbările climatice a ecosistemelor acvatice

2021 ◽  
Author(s):  
Nadejda Andreev ◽  
Keyword(s):  
Aquatic Ecosystems ◽  
Ecosystem Functions ◽  
Buffer Strips ◽  
Drainage Ditches ◽  
Rain Gardens ◽  
Aquatic Biodiversity ◽  
Different Types ◽  
Current Article ◽  
Bank Stabilization ◽  
Forest Buffer

The current article presents a bibliographic overview of green infrastructures and their role in strengthening the adaptive capacity of aquatic ecosystems to the adverse effects of climate change (high temperatures, heavy rains, droughts). Different types of ecological infrastructures are presented: forest buffer strips, rain gardens, permeable pavement, drainage ditches; bioengineering structures for bank stabilization. Also the functions performed by green infrastructures to maintain ecosystem services were presented: mitigating the effects of floods, stabilizing banks, preventing landslides and water caused erosion, stormwater management, reducing the load of pollutants. For the implementation of this approach in the hydrographic basin of Dniester River or the Prut River a more detailed study is necessary on the state of habitats, identification of hotspot areas of aquatic biodiversity, particularly those species important for maintaining of ecosystem functions, highlighting of the areas at high risk of floods or erosion.

Self-Presentation – A Precondition for Social Interactio (Theoretical Aspects)

2018 ◽  
Vol 6 (2) ◽  
Author(s):  
Nikolay Zhilkov
Keyword(s):  
Self Presentation ◽  
Erving Goffman ◽  
Different Types ◽  
Edward Jones ◽  
Current Article ◽  
Points Of View

The current article presents some of the theoretical aspects of self-presentation describing different points of view on the issue. The ideas of Erving Goffman, Edward Jones, Barry Schlenker, Roy Baumeister and others are being explored. Concepts related to to self-presentation are presented. Different types and functions of self-expression are identified.

scholarly journals An Overview of DNA-Based Applications for the Assessment of Benthic Macroinvertebrates Biodiversity in Mediterranean Aquatic Ecosystems

Diversity ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 112
Author(s):  
Eftychia Tzafesta ◽  
Francesco Zangaro ◽  
Valeria Specchia ◽  
Maurizio Pinna
Keyword(s):  
Benthic Macroinvertebrates ◽  
Aquatic Ecosystems ◽  
Biodiversity Monitoring ◽  
Biodiversity Data ◽  
Management Tools ◽  
Aquatic Biodiversity ◽  
Current State ◽  
Dna Metabarcoding ◽  
Ecosystem Condition ◽  
Macroinvertebrate Species

The loss of aquatic biodiversity is increasing at a rapid rate globally. There is a worldwide effort to protect, preserve and restore aquatic ecosystems. For efficient biodiversity monitoring and reliable management tools, comprehensive biodiversity data are required. The abundance and species diversity of benthic macroinvertebrates are commonly used as indicators of the aquatic ecosystem condition. Currently, macroinvertebrate species biodiversity assessment is based on morpho-taxonomy, which could be enhanced by recent advances in DNA-based tools for species identification. In particular, DNA metabarcoding has the potential to identify simultaneously many different taxa in a pool of species and to improve aquatic biomonitoring significantly, especially for indicator species. This review is focused on the current state of DNA-based aquatic biomonitoring using benthic macroinvertebrates in the Mediterranean region.

scholarly journals Falsehood in Speech and Some Means of Its Expression

2012 ◽  
Vol 8 (1-2 (10)) ◽  
pp. 79-84
Author(s):  
Lusine Mnatsakanyan
Keyword(s):  
Different Types ◽  
Linguistic Characteristic ◽  
Current Article

The current article investigates the psychological-linguistic characteristic of falsehood in speech.  Different types of falsehood are introduced, and their application in specific speech situations are discussed.  Linguistic as well as extralinguistic means of falsehood in speech have been examined to reveal the role of movements/gestures in falsehood identification.

scholarly journals Conceptualizing and managing risk in pediatric OCD: Case examples

2020 ◽  
Vol 84 (1) ◽  
pp. 3-20 ◽  
Author(s):  
Angela Lewis ◽  
Caroline Stokes ◽  
Isobel Heyman ◽  
Cynthia Turner ◽  
Georgina Krebs
Keyword(s):  
Clinical Decision Making ◽  
Clinical Decision ◽  
Obsessive Compulsive ◽  
Case Examples ◽  
Compulsive Disorder ◽  
Pediatric Ocd ◽  
Different Types ◽  
Compulsive Behaviors ◽  
Current Article ◽  
Managing Risk

It is not uncommon for patients with obsessive-compulsive disorder (OCD) to present with symptoms that suggest possible risk. This can include apparent risk, which reflects the content of obsessional fears, and genuine risk arising as the unintended consequence of compulsive behaviors. In both situations, risk can cause confusion in relation to diagnosis and treatment. The current article adds to the small existing literature on risk in OCD by presenting case examples illustrating different types of risk in the context of pediatric OCD, along with a discussion of their implications for management. The cases highlight that it is crucial that risk in OCD is considered carefully within the context of the phenomenology of the disorder. Guidance is offered to support clinical decision making and treatment planning.

scholarly journals First record of the endemic phytophilous cladoceran Celsinotum candango Sinev & Elmoor-Loureiro, 2010, in Minas Gerais state, in a threatened shallow lake at Serra do Gandarela

2015 ◽  
Vol 15 (4) ◽  
Author(s):  
Francisco Wagner Moreira ◽  
Emerson Silva Dias ◽  
Eneida Maria Eskinazi Sant'Anna
Keyword(s):  
Shallow Lakes ◽  
Shallow Lake ◽  
Aquatic Ecosystems ◽  
National Park ◽  
Federal District ◽  
First Record ◽  
Minas Gerais ◽  
Mountain Ridge ◽  
Aquatic Biodiversity ◽  
Minas Gerais State

This study describes the occurrence of the phytophilous cladoceran Celsinotum candango, which has been considered, up to now, an endemic species of the Brazilian Cerrado, with only two previous records in the wetlands of Brasilia, Federal District. The cladoceran has now been registered at Coutos Lake (“Lagoa dos Coutos”), an altitudinal, temporary shallow lake, located in ironstone outcrops at Serra do Gandarela, Minas Gerais state. This mountain ridge was recently turned into an integral protection conservation unit, the Gandarela National Park. However, many shallow lakes, including this one, were excluded from the delimited area of the park, and are now at risk of disappearing due to expansion of mining activities. The information provided here reveals the importance of these shallow lakes to aquatic biodiversity, and reinforces the need for the inclusion of these rare aquatic ecosystems into the recently created Gandarela National Park.

Detection of drainage ditches using high-resolution LIDAR data in the Swedish forest

2021 ◽  
Author(s):  
Siddhartho S. Paul ◽  
Anneli M. Ågren ◽  
William Lidberg
Keyword(s):  
High Resolution ◽  
Boreal Forests ◽  
Substantial Improvement ◽  
Forest Growth ◽  
Ecosystem Functions ◽  
Lidar Data ◽  
Drainage Ditches ◽  
Degraded Land ◽  
Major Shift ◽  
Elevation Model

<p>Drainage ditches are common in boreal forests and provide better soil aeration and tree growth by draining the wet soils. Peatland drainage in the last century has created about 1 million km of artificial streams in Sweden, making it one of the most widespread human-induced environmental disturbances. This extensive use of ditches over a long period resulted in a major shift in forest hydrology and impacted the ecosystem functions. Therefore, there is a pressing need for an accurate database of forest ditches so that sustainable management can be practiced to improve the overall functioning of the forest ecosystem. Comparisons with national field datasets show that existing maps only show a small fraction (<10%) of the ditches across the country. To address this knowledge gap, we applied AI methods on high-resolution (1 m) LIDAR data to map drainage ditches in a subset of the Swedish forest. We developed a suite of topographic indices and analyzed those with machine learning and deep learning algorithms to perform automatic ditch detection. Both models produced reasonably accurate results and a substantial improvement over the existing maps in terms of ditch detection. The impoundment index and high pass medium filter from the digital elevation model were among the top predictors of drainage ditches. The study introduced a new avenue for accurate detection of forest ditches across the whole country. Our AI-generated maps of ditches provide effective tools for the restoration of degraded land and support ditch cleaning operations to increase forest growth.</p>

scholarly journals Zearalenone Contamination of the Aquatic Environment as a Result of its Presence in Crops / Pojava Mikotoksina U Vodenom Okolišu Zbog Njihove Prisutnosti U Usjevima

2012 ◽  
Vol 63 (4) ◽  
pp. 429-435 ◽  
Author(s):  
Agnieszka Waśkiewicz ◽  
Karolina Gromadzka ◽  
Jan Bocianowski ◽  
Paulina Pluta ◽  
Piotr Goliński
Keyword(s):  
Water Samples ◽  
Aquatic Environment ◽  
Aquatic Ecosystems ◽  
Aquatic Systems ◽  
Water Bodies ◽  
Drainage Ditches ◽  
Crop Fields ◽  
Cereal Samples ◽  
Agricultural Areas ◽  
Control Water

AbstractThe aim of this study was to establish a relation between zearalenone contamination of crops in the Polish province of Wielkopolska and its occurrence in aquatic ecosystems close by the crop fields. Water samples were collected from water bodies such as drainage ditches, wells, or watercourses located in four agricultural areas. Moreover, control water samples were collected from the Bogdanka river, which was located outside the agricultural areas and near an urban area. Cereal samples were collected in the harvest season from each agricultural area close to tested water bodies. Zearalenone (ZEA) was found in all water and cereal samples. The highest concentrations were recorded in the postharvest season (September to October) and the lowest in the winter and spring. Mean ZEA concentrations in water ranged between 1.0 ng L-1 and 80.6 ng L-1, and in cereals from 3.72 ng g-1 to 28.97 ng g-1. Our results confirm that mycotoxins are transported to aquatic systems by rain water through soil.

scholarly journals Estimated abundance and diversity of heterotrophic protists in South African biocrusts

2016 ◽  
Vol Volume 112 (Number 7/8) ◽  
Author(s):  
Kenneth Dumack ◽  
Robert Koller ◽  
Bettina Weber ◽  
Michael Bonkowski ◽  
◽  
...  
Keyword(s):  
South African ◽  
Soil Nutrient ◽  
Ecosystem Functions ◽  
Turnover Rates ◽  
Succulent Karoo ◽  
Functional Roles ◽  
Carbon And Nitrogen ◽  
Different Types ◽  
Abundance And Diversity ◽  
Soil Protists

Abstract Biological soil crusts (biocrusts) occur widely in the uppermost millimeters of the soil in arid and semi-arid systems. Worldwide they cover large terrestrial areas and play a major role in the global terrestrial carbon and nitrogen cycles. However, knowledge of the microbial decomposer foodwebs within biocrusts is particularly scarce. Heterotrophic protists in soil are predominantly bacterivores, and because of their high biomass compared with other soil fauna and fast turnover rates, protists are considered an important factor for soil nutrient cycling and energy fluxes. Thus, knowledge of their biodiversity, abundance and functional roles is important to understand soil ecosystem functions. We investigated the diversity and abundance of heterotrophic soil protists in different types of biocrusts from the Succulent Karoo, South Africa. With an overall diversity of 23 distinct morphotypes, soil protist biodiversity was shown to be high. The most abundant groups were Spumella-like chrysomonads, gliding bodonids, glissomonads and heteroloboseans. Protist abundance was highly variable among samples. The abundance and diversity did not differ significantly among different types of biocrusts, indicating that microscale differences, but not macroscopic soil crust builders (e.g. cyanobacteria, lichens and bryophytes), have a major impact on the protist community.

scholarly journals ACANTHOCEPHALUS AND NEMATODES OF FISH IN WATER BODIES OF THE SYRDARYA RIVER MIDSTREAMS

2019 ◽  
pp. 529-533
Author(s):  
Safarova ◽  
Abduganiev ◽  
Akramova ◽  
Soatov ◽  
Akramov
Keyword(s):  
Species Diversity ◽  
Aquatic Ecosystems ◽  
Preventive Measures ◽  
Water Bodies ◽  
Fish Parasites ◽  
Intermediate Hosts ◽  
Different Types ◽  
Acanthocephalus Lucii ◽  
First Time ◽  
Artificial Reservoirs

The features of the nematode and acanthocephalus fauna of Cypriniformes and Siluriformes fish, their distribution in the water bodies of the Syrdarya River midstream were studied. In total, 18 helminth species belonging to the classes Nematoda – (14 species) and Acantocephala – (4) are registered in the region. 7 species we marked for the first time for the region of under consideration.Studies were conducted of different types of water bodies of the Syrdarya river in 2016–2019 years. The collection and study of helminths of fish were carried out by known methods in helminthology and ichthyoparasitology. 1239 copies of Cypriniformes fish belonging to 15 species (Cyprinidae – 12 species, Cobitidae – 3) and 12 specimens of Siluriformes fishes from the families (Siluridae and Clariidae) were researched.According to preliminary data, 18 species of helminths belonging to the class Nematoda (14 species) and to the class Acantocephala (4 species) were found in the studied fish orders in the reservoirs of the region. Significant species diversity is characterized by the class Nematoda. We have registered 14 species belonging to 4 orders. The detachment Trichocephalida Skrjabin et Schulz, 1928 is represented by one species – Capillaria tomentosa Dujardin, 1843, which is noted in most Cypriniformes in the natural and artificial reservoirs of the northeast of Uzbekistan. The greatest species diversity is distinguished by the detachment Spirurida Chitwood, 1933. We noted 8 species. The remaining units are represented by 1–2 species – banal fish parasites. The findings of Dioctophyme renale Goeze, 1782 (larvae) in Cypriniformes in the studied region should be noted.The Acanthocephala class is represented by 4 species: Neoechinorhynchus rutileMüller, 1780, Pomphorhynchus laevis Müller, 1776, Acanthocephalus lucii Müller, 1776 and A. anguillae Müller, 1780. Nematodes are dominant. The results suggest that the most optimal conditions for the functioning of the corresponding helminth communities probably exist in the water bodies of the Syrdarya’s midstream. The abundance of a number of invertebrate groups, the inhabitants of aquatic ecosystems, which are intermediate hosts of parasites, the accumulation of waterbirds and mammals contribute to the irreversible circulation of helminths in aquatic cenoses of the study area. All this requires systematic monitoring of fish helminthiasis in order to develop preventive measures.

scholarly journals Determinarea schimbărilor mediului acvatic, evaluarea migrației şi impactului poluanților, stabilirea legităților funcționării hidrobiocenozelor şi prevenirea consecinţelor nefaste asupra ecosistemelor (abordări, oportunități, realizări)

2021 ◽  
Author(s):  
Elena Zubcov ◽  
◽  
Nadejda Andreev ◽  
Dumitru Bulat ◽  
◽  
...  
Keyword(s):  
At Risk ◽  
Research Methods ◽  
Aquatic Ecosystems ◽  
Applied Research ◽  
Meteorological Conditions ◽  
Aquatic Biodiversity ◽  
Natural Factors

This article reflects on the main issues addressed in the AQUABIO project in the context of international provisions for the prevention of the risk of pollution of aquatic ecosystems and the need to protect/restore aquatic biodiversity. The paper presents the applied innovative tools, project stages, applied research methods and equipment as well as the main results obtained during 2020, including changes taking place in the ecosystems of the Dniester and Prut rivers under the influence of anthropogenic (water capture, dams, exploitation of rivers for energy purposes) and natural factors (meteorological conditions), which put at risk the functioning of aquatic ecosystems and their capacity for self-purification.

Sign in / Sign up

Export Citation Format

Share Document