scholarly journals Bioactive Compounds from Three Green Algae Species along Romanian Black Sea Coast with Therapeutically Properties

2020 ◽  
Vol 3 (1) ◽  
pp. 87
Author(s):  
R. Sirbu ◽  
T Negreanu-Pirjol ◽  
M. Mirea
Keyword(s):  
Green Algae ◽  
Bioactive Compounds ◽  
Black Sea ◽  
Marine Ecosystem ◽  
Raw Material ◽  
The Black Sea ◽  
Chemical Compositions ◽  
Enteromorpha Intestinalis ◽  
Bioactive Substances ◽  
Marine Biomass

During the past years, it became obvious that the ecosystem presents a marine algae excedent, which should be utilized in one way or another. In the marine world, algae have been intensely studied, but the Black Sea seaweeds are not sufficiently harnessed. To survive in such various diverse and extreme environments, macroalgae produce a variety of natural bioactive compounds and metabolites, such as polysaccharides, polyunsaturated fatty acids, and phlorotannins. In the Black Sea there are three species of green algae: Ulvae lactuca sp., Enteromorpha intestinalis and Cladophora sp. The superior exploitation of the marine biomass represents a highly important resource for the pharmaceutical industry, supplying raw material for the extraction of bioactive substances (vitamins, polysaccharides, sterols, phenols and amino-acids) and various other substances. The purity of this compounds is strongly connected to the state of the marine ecosystem. In the present paper are presented the main bioactive compounds existing in the chemical composition of the green algae in the Black Sea studied. The details of the therapeutic properties of the green algae generated by their chemical compositions.

Wastewater Treatment Using Marine Algae Biomass as Pollutants Removal

2018 ◽  
Vol 69 (5) ◽  
pp. 1089-1098
Author(s):  
Elena Suzana Biris Dorhoi ◽  
Maria Tofana ◽  
Simona Maria Chis ◽  
Carmen Elena Lupu ◽  
Ticuta Negreanu Pirjol
Keyword(s):  
Wastewater Treatment ◽  
Green Algae ◽  
Marine Algae ◽  
Tap Water ◽  
Ulva Lactuca ◽  
Raw Material ◽  
Bioactive Substances ◽  
Algae Biomass ◽  
Marine Biomass ◽  
Pollutants Removal

The valorification of the marine biomass is an important resource for many industries like pharmaceutical, supplying raw material for the extraction of bioactive substances (vitamins, sterols and collagen), cosmetics, biofertilizers and wastewater treatment. In the last years a special attention has been given to the use of macroalgae. The aim of this study was to emphasize the capacity of two representative green algae species frequent presents on the Romanian shore, Ulva lactuca (L.) and Cladophora vagabunda (L.) Hoek, to remove two usual detergents from wastewater. The green algae washed, dried at room temperature, macerated to powder were introduced into different filter paper for comparison, then immersed in waste water treated with different concentrations of detergents. Tap water was used for the experiment. The results show that Ulva lactuca (L.) species is suitable than Cladophora vagabunda (L.) Hoek species, for wastewater treatment.

scholarly journals Marine Algae from Black Sea - Important Resources in the Pharmaceutical and Medical Research

2016 ◽  
Vol 2 (1) ◽  
pp. 27
Author(s):  
Emin Cadar ◽  
Cristina Luiza Erimia ◽  
Aneta Tomescu ◽  
Stelian Paris ◽  
Rodica Sîrbu
Keyword(s):  
Marine Algae ◽  
Life Form ◽  
Marine Ecosystem ◽  
Point Of View ◽  
Raw Material ◽  
Bioactive Substances ◽  
Cystoseira Barbata ◽  
Marine Biomass ◽  
Strongly Connected ◽  
Other Substances

During the past years, it became obvious that the ecosystem presents a marine algae surpluses, which should be turned valuable in one way or another. The importance of the macrobenthic flora – algae and phanero-gammes – for the general productivity of the marine environment, especially in shallow waters, is becoming more and more obvious from the biological as well as from the economical point of view. The macrophytes also represent a particular life form. The benthic macroflora includes 33 species 4: 16 Chlorophyta, 10 Rhodophyta, 5 Phaeophyta, and 2 Phanerogama. The quantity of green algae (Chlorophyta) was higher in the Constanta – Eforie area, as red algae are predominant in the southern part of the littoral. Brown algae (Phaeophyta) were encountered in the Constanta city area (Punctaria) and in Vama-Veche (Cystoseira barbata). Yet, this fact indicates a slight amelioration of the marine ecosystem, after many years of eutrophication. The superior capitalisation of the marine biomass represents a highly important resource for the pharmaceutical industry, supplying raw material for the extraction of bioactive substances and various other substances, the purity of which is strongly connected to the state of the marine ecosystem.

scholarly journals Marine Algae from Black Sea - Important Resources in the Pharmaceutical and Medical Research

2016 ◽  
Vol 4 (1) ◽  
pp. 27
Author(s):  
Emin Cadar ◽  
Cristina Luiza Erimia ◽  
Aneta Tomescu ◽  
Stelian Paris ◽  
Rodica Sîrbu
Keyword(s):  
Marine Algae ◽  
Life Form ◽  
Marine Ecosystem ◽  
Point Of View ◽  
Raw Material ◽  
Bioactive Substances ◽  
Cystoseira Barbata ◽  
Marine Biomass ◽  
Strongly Connected ◽  
Other Substances

During the past years, it became obvious that the ecosystem presents a marine algae surpluses, which should be turned valuable in one way or another. The importance of the macrobenthic flora – algae and phanero-gammes – for the general productivity of the marine environment, especially in shallow waters, is becoming more and more obvious from the biological as well as from the economical point of view. The macrophytes also represent a particular life form. The benthic macroflora includes 33 species 4: 16 Chlorophyta, 10 Rhodophyta, 5 Phaeophyta, and 2 Phanerogama. The quantity of green algae (Chlorophyta) was higher in the Constanta – Eforie area, as red algae are predominant in the southern part of the littoral. Brown algae (Phaeophyta) were encountered in the Constanta city area (Punctaria) and in Vama-Veche (Cystoseira barbata). Yet, this fact indicates a slight amelioration of the marine ecosystem, after many years of eutrophication. The superior capitalisation of the marine biomass represents a highly important resource for the pharmaceutical industry, supplying raw material for the extraction of bioactive substances and various other substances, the purity of which is strongly connected to the state of the marine ecosystem.

ATMOSPHERIC N DEPOSITION TO THE COASTAL AREA OF THE BLACK SEA: SOURCES, INTRA-ANNUAL VARIATIONS AND IMPORTANCE FOR BIOGEOCHEMISTRY AND PRODUCTIVITY OF THE SURFACE LAYER

2017 ◽  
Author(s):  
Alla Varenik ◽  
Alla Varenik ◽  
Sergey Konovalov ◽  
Sergey Konovalov
Keyword(s):  
Primary Production ◽  
Black Sea ◽  
Marine Ecosystem ◽  
C:N Ratio ◽  
N Deposition ◽  
Local Source ◽  
The Black Sea ◽  
Coastal Zones ◽  
Atmospheric N Deposition ◽  
Urban Location

Atmospheric precipitations can be an important source of nutrients to open and coastal zones of marine ecosystem. Jickells [1] has published that atmospheric depositions can sup-port 5-25% of nitrogen required to primary production. Bulk atmospheric precipitations have been collected in a rural location at the Black Sea Crimean coast – Katsiveli settlement, and an urban location – Sevastopol city. Samples have been analyzed for inorganic fixed nitrogen (IFN) – nitrate, nitrite, and ammonium. Deposi-tions have been calculated at various space and time scales. The monthly volume weighted mean concentration of IFN increases from summer to winter in both locations. A significant local source of IFN has been revealed for the urban location and this source and its spatial influence have been quantified. IFN deposition with atmospheric precipitations is up to 5% of its background content in the upper 10 m layer of water at the north-western shelf of the Black Sea. Considering Redfield C:N ratio (106:16) and the rate of primary production (PP) in coastal areas of the Black Sea of about 100-130 g C m-2 year-1 we have assessed that average atmospheric IFN depositions may intensify primary production by 4.5% for rural locations, but this value is increased many-fold in urban locations due to local IFN sources.

ATMOSPHERIC N DEPOSITION TO THE COASTAL AREA OF THE BLACK SEA: SOURCES, INTRA-ANNUAL VARIATIONS AND IMPORTANCE FOR BIOGEOCHEMISTRY AND PRODUCTIVITY OF THE SURFACE LAYER

2017 ◽  
Author(s):  
Alla Varenik ◽  
Alla Varenik ◽  
Sergey Konovalov ◽  
Sergey Konovalov
Keyword(s):  
Primary Production ◽  
Black Sea ◽  
Marine Ecosystem ◽  
C:N Ratio ◽  
N Deposition ◽  
Local Source ◽  
The Black Sea ◽  
Coastal Zones ◽  
Atmospheric N Deposition ◽  
Urban Location

Atmospheric precipitations can be an important source of nutrients to open and coastal zones of marine ecosystem. Jickells [1] has published that atmospheric depositions can sup-port 5-25% of nitrogen required to primary production. Bulk atmospheric precipitations have been collected in a rural location at the Black Sea Crimean coast – Katsiveli settlement, and an urban location – Sevastopol city. Samples have been analyzed for inorganic fixed nitrogen (IFN) – nitrate, nitrite, and ammonium. Deposi-tions have been calculated at various space and time scales. The monthly volume weighted mean concentration of IFN increases from summer to winter in both locations. A significant local source of IFN has been revealed for the urban location and this source and its spatial influence have been quantified. IFN deposition with atmospheric precipitations is up to 5% of its background content in the upper 10 m layer of water at the north-western shelf of the Black Sea. Considering Redfield C:N ratio (106:16) and the rate of primary production (PP) in coastal areas of the Black Sea of about 100-130 g C m-2 year-1 we have assessed that average atmospheric IFN depositions may intensify primary production by 4.5% for rural locations, but this value is increased many-fold in urban locations due to local IFN sources.

scholarly journals A study of long-term changes in Black Sea ecosystems based on data assimilation of remote measurements in a numerical model

2019 ◽  
Vol 46 (1) ◽  
pp. 58-69
Author(s):  
V. L. Dorofeev ◽  
L. I. Sukhikh
Keyword(s):  
Black Sea ◽  
Marine Ecosystem ◽  
Three Dimensional ◽  
The Black Sea ◽  
Regular Grid ◽  
Remote Measurements ◽  
Biogeochemical Parameters ◽  
Color Scanner

Herein, we present a simulation of the dynamics of Black Sea ecosystems using a three-dimensional interdisciplinary model that assimilates satellite color scanner measurements. Calculations were performed for the fifteen years from 1998 and a set of 3-d biogeochemical fields of the Black Sea were generated on a regular grid with a discreteness time of 1 day. Analyses of core biogeochemical parameters of the marine ecosystem were then performed. The qualities of received fields were evaluated using comparisons with existing data from in situ measurements.

scholarly journals Ecological interrelations of Rapana venosa (Gastropoda: Muricidae) with ichthyofauna in the Black Sea

2016 ◽  
Vol 1 (4) ◽  
pp. 76-77
Author(s):  
I. P. Bondarev
Keyword(s):  
Black Sea ◽  
Marine Ecosystem ◽  
Fish Fauna ◽  
The Black Sea ◽  
Sandy Bottom ◽  
Rapana Venosa ◽  
New Information ◽  
Bottom Zone

Systematic monitoring of ecologically significant species – predatory mollusc Rapana venosa Valenciennes, 1846 populations – is an important part of the Black Sea monitoring. The study of the role of R. venosa in contemporary marine ecosystem is of considerable interest. In June-September 2015-2016 the study of consorting relations of rapana was conducted in situ with a parallel sampling by diver. In the course of research new information about the interaction of R. venosa with the fish fauna has been obtained. Of particular importance for fishes is the presence of rapana in the sandy bottom zone, where there are no natural shelters, and food resources are limited. The most important for the fish is the presence on the rapana shells of algal fouling and epiphyton. The shells of invader – R. venosa – and its fouling create additional opportunities for the survival of some fish fauna representatives juveniles of the Black Sea. The data obtained extend the concepts of ecological role of mollusc – invader R. venosa, as well as the ecology and ethology of several fish species.

Heavy metal assessment in algae, sediments and water from the Bulgarian Black Sea coast

1999 ◽  
Vol 39 (8) ◽  
pp. 207-212 ◽  
Author(s):  
A. Jordanova ◽  
A. Strezov ◽  
M. Ayranov ◽  
N. Petkov ◽  
T. Stoilova
Keyword(s):  
Heavy Metal ◽  
Coastal Zone ◽  
Black Sea ◽  
Correlation Coefficients ◽  
The Black Sea ◽  
Enteromorpha Intestinalis ◽  
Lead And Cadmium ◽  
Cystoseira Barbata ◽  
Black Sea Coast ◽  
Sea Coast

The aim of our investigation is a survey of heavy metal pollution in algae, sediments and water from the Bulgarian Black Sea coast and determination of algae species appropriate as bioindicators. The levels of iron, copper, manganese, zinc, lead and cadmium are determined in water, sediments and eight species of macroalgae: (four green: Cladofora laetevirens, Ulva rigida, Enteromorpha intestinalis and Bryopsis plumosa; two brown: Cystoseira crinita and Cystoseira barbata; and two red: Ceramium rubrum and Corallina mediterranium), widely distributed in the Bulgarian coastal zone, and dominant in the Black Sea. The studied area is the littoral coastal zone from four locations - Tuzlata, Ravda, Ahtopol and Sinemoretz. No significant variations between metal concentrations in algae samples are obtained, while for sediments and water there are significant differences between location and season. The Cladofora laetevirens and Ceramium rubrum species show the highest metal content while Cystoseira crinita and Cystoseira barbata show the lowest level. The correlation coefficients and concentration factors of the elements are calculated.

Causes and Consequences of the Black Sea Ecosystem Pollution with Petroleum Products

2020 ◽  
pp. 29-44
Author(s):  
Bogdan Cioruța ◽  
Diana Mădăras ◽  
Mirela Coman
Keyword(s):  
Protected Areas ◽  
Cultural Values ◽  
Black Sea ◽  
Marine Protected Areas ◽  
Oil Pollution ◽  
Marine Ecosystem ◽  
Marine Ecosystems ◽  
Petroleum Products ◽  
The Black Sea ◽  
Oil Pipeline

Until the beginning of the 21st century concerns related to the management of protected areas have been reduced to the voluntary initiatives of nature lovers, rarely materializing in specific conservation measures carried out by the authorities or administrators of those areas. As the concern for the management of protected areas is relatively new in Romania and the information related to this subject is relatively scarce, especially those regarding marine ecosystems, we considered necessary this study on the management of marine protected areas in relation to oil pollution. Marine protected areas, in particular, delimited as areas where the main purpose is the protection of nature and cultural values, are important for all segments of society. They have great potential to become models of harmonious society development, promoting more than other protected areas the sustainable resource management. At the same time, the management measures promoted, sometimes imposed, can affect the communities inside or in the immediate vicinity of the areas, and can significantly influence the development of the economy. Recently (as a reference 1970-2020), the pollution of the marine environment with petroleum products has gained dramatic accents. The maritime transport of oil, the exploration and exploitation of marine deposits, their processing in refineries located in the vicinity of the coastal area, to which are added other anthropogenic activities, have generated and still generate a number of risk factors, which involve numerous pollution incidents. Navigation accidents of large oil tanks or incidents at offshore drilling rigs caused, in the same period, major environmental disasters, with the most severe consequences. Marine ecosystems in polluted regions have thus suffered major losses and disturbances, which have been felt for a long time. Through this paper we aim to review some aspects of oil pipeline pollution of the Planetary Ocean, respectively the associated pollution in the Black Sea ecosystem. Following the analyzes carried out on the basis of the data from the consulted literature, as well as following other observations, we came to the conclusion that the protected areas associated with the Black Sea, as well as the marine ecosystem itself, are far from being affected by such accidents.

scholarly journals Biodiversity in the Black Sea - ecological Study from the Perspective of Romanian philately

2021 ◽  
pp. 35-50
Author(s):  
Bogdan-Vasile Cioruța ◽  
Alexandru Leonard Pop ◽  
Mirela Coman
Keyword(s):  
Protected Areas ◽  
Cultural Values ◽  
Black Sea ◽  
Marine Protected Areas ◽  
General Public ◽  
Ecological Study ◽  
Marine Ecosystem ◽  
Marine Ecosystems ◽  
The Black Sea ◽  
Postage Stamps

As the concern for the management of protected areas is relatively new in Romania, and the information related to this topic is relatively scarce, especially those on marine ecosystems, we considered necessary this study on the management of marine protected areas with specific biodiversity illustrated by philately. Marine protected areas, in particular, delimited as areas where the main purpose is the protection of nature and cultural values, are important for all segments of society. Through this paper, we aimed to review several aspects, ecological and philatelic alike, regarding the specific biodiversity of the Black Sea ecosystem. Following the analyzes performed on account of the data from the consulted specialized literature (in the form of postage stamps, FDCs, occasional envelopes, and maximum postcards, but also other philatelic effects), as well as as a result of other observations (with catalogs and sites with philatelic content), we concluded that the biodiversity of the Black Sea, as well as the marine ecosystem itself, are relatively well represented in Romanian philately. The four philatelic issues illustrate crustaceans, mollusks, corals, and anemones, but also other species, all being to the liking of the general public in terms of information and promotion.

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