Abstract This research work focused on the study of morphological diversity in 270 types of Artemisia herba-alba, known as “white wormwood,” from different bioclimatic stages and its relationship with the distribution and adaptation of the species. The phenotypic parameters studied include the aerial vegetative part of the leaves and the flowers. The existing relationships between the ecological conditions and the genetic dynamics expressed by the morphological polymorphism of the populations concerned have been established. Results obtained allowed us to admit that we have two ecotypes in Algeria: the first one has five flowers per capitulum and can be found at the level of the three bioclimatic floors studied; whereas the second one has eight flowers per capitulum occupying only the territories with a Saharan climate. The analysis of variance (ANOVA) and UPGMA dendrogram allowed us to observe a very significant intra- and inter-population morphological polymorphism at the level of each site and between the different sites. This wide variability thus observed for A. herba-alba could help research on a large collection of individuals and therefore to choose the most effective ecotypes in order to reintroduce this species in the steppe areas of Algeria.
{"title":"Relationship between variations in ecological conditions and the dynamics of intra-specific morphological diversity of <i>Artemisia herba-alba</i> Asso in Algeria","authors":"Maghni Benchohra, Adda Ahmed, Othmane Merah","doi":"10.2478/eko-2023-0024","DOIUrl":"https://doi.org/10.2478/eko-2023-0024","url":null,"abstract":"Abstract This research work focused on the study of morphological diversity in 270 types of Artemisia herba-alba, known as “white wormwood,” from different bioclimatic stages and its relationship with the distribution and adaptation of the species. The phenotypic parameters studied include the aerial vegetative part of the leaves and the flowers. The existing relationships between the ecological conditions and the genetic dynamics expressed by the morphological polymorphism of the populations concerned have been established. Results obtained allowed us to admit that we have two ecotypes in Algeria: the first one has five flowers per capitulum and can be found at the level of the three bioclimatic floors studied; whereas the second one has eight flowers per capitulum occupying only the territories with a Saharan climate. The analysis of variance (ANOVA) and UPGMA dendrogram allowed us to observe a very significant intra- and inter-population morphological polymorphism at the level of each site and between the different sites. This wide variability thus observed for A. herba-alba could help research on a large collection of individuals and therefore to choose the most effective ecotypes in order to reintroduce this species in the steppe areas of Algeria.","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135685720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The coastline of El Tarf province, stretching for 90 km, presents a great variety of forms and complex ecosystems that need to be protected. The Coastal Law 02-02 was established to achieve this goal by using geographic information system (GIS) and remote sensing to assess the degree of implementation of this law on the ground. This evaluation highlighted a significant evolution of land use in the coastal zone of El Tarf province over a period of 32 years, from 1990 to 2022. In 1990, the area was predominantly forested (55.08%) with a proportion of agricultural land of 27.26% and a significant portion of wetland areas (17.26%). Over time, the forested area decreased to reach 48.58% in 2022, while agricultural land and urban areas increased. This evolution suggests increasing pressure on natural resources, with potential implications for the environment and biodiversity of the region. Despite the 2002 Coastal Law 02-02s which sets specific provisions for the protection and enhancement of the coastline, it is important to emphasize the importance of sustainable management of natural resources and land use in the region. It is essential to implement measures to protect the fragile ecosystems of the region and ensure the sustainability of natural resource use to preserve the environment and biodiversity of the region for future generations. This analysis could also eventually enable decision-makers to have supporting elements to evolve the law 02.02 with the aim of better preserving the coastal area.
El Tarf省的海岸线长达90公里，呈现出多种多样的形态和复杂的生态系统，需要保护。《沿海法02-02》就是为了实现这一目标而制定的，通过地理信息系统(GIS)和遥感来评估该法在地面的实施程度。该评估强调了1990年至2022年32年间El Tarf省沿海地区土地利用的重大演变。1990年以森林为主(55.08%)，农用地占27.26%，湿地占17.26%。随着时间的推移，森林面积减少到2022年的48.58%，而农业用地和城市面积增加。这种演变表明对自然资源的压力越来越大，对该地区的环境和生物多样性有潜在影响。尽管2002年第02-02号《沿海法》为保护和加强海岸线制定了具体规定，但必须强调对该地区自然资源和土地利用进行可持续管理的重要性。必须采取措施保护该地区脆弱的生态系统，确保自然资源利用的可持续性，为子孙后代保护该地区的环境和生物多样性。这种分析最终也可以使决策者有支持因素来发展法律02.02，以更好地保护沿海地区。
{"title":"Protection and enhancement of the coastal area of the wilaya of El Tarf (Algeria): Automatic analysis using computer tools","authors":"Bilal Belloulou, Fouzia Bachari Houma, Housseyn Otmani","doi":"10.2478/eko-2023-0031","DOIUrl":"https://doi.org/10.2478/eko-2023-0031","url":null,"abstract":"Abstract The coastline of El Tarf province, stretching for 90 km, presents a great variety of forms and complex ecosystems that need to be protected. The Coastal Law 02-02 was established to achieve this goal by using geographic information system (GIS) and remote sensing to assess the degree of implementation of this law on the ground. This evaluation highlighted a significant evolution of land use in the coastal zone of El Tarf province over a period of 32 years, from 1990 to 2022. In 1990, the area was predominantly forested (55.08%) with a proportion of agricultural land of 27.26% and a significant portion of wetland areas (17.26%). Over time, the forested area decreased to reach 48.58% in 2022, while agricultural land and urban areas increased. This evolution suggests increasing pressure on natural resources, with potential implications for the environment and biodiversity of the region. Despite the 2002 Coastal Law 02-02s which sets specific provisions for the protection and enhancement of the coastline, it is important to emphasize the importance of sustainable management of natural resources and land use in the region. It is essential to implement measures to protect the fragile ecosystems of the region and ensure the sustainability of natural resource use to preserve the environment and biodiversity of the region for future generations. This analysis could also eventually enable decision-makers to have supporting elements to evolve the law 02.02 with the aim of better preserving the coastal area.","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract With increasing urbanization, it is necessary to create green infrastructure in cities and urban areas to improve not only the quality of life for residents, but also the health and sustainability of local ecosystems. One effective way to create green spaces is by establishing meadows filled with diverse plant species. These meadows can provide numerous benefits, such as aiding pollinator conservation, improving air and water quality, and increasing biodiversity. Therefore, creating these meadows is an important component of urban ecology. Seven types of flower meadow mixtures from a Czech company were sown in 12 plots within the Hliník Urban Park in Nové Zámky, Slovak Republic. The development of the vegetation and the impact of maintenance management and climatic factors were monitored during the vegetation period of 2021‒2022, and the plots are still being monitored. The results of the flower meadow research in 2021 showed that improper maintenance and insufficient precipitation negatively influenced the vegetation’s development. Grasses were most prevalent during the summer months, while legumes were more common in the spring months. The analysis of the plots revealed that four out of 12 plots were dominated by annuals and grasses, which were the most abundant throughout the entire vegetation period. In 2022, it was observed that grasses were most prevalent in May, legumes in June and July, and annuals occurred sporadically in all plots. Insufficient precipitation and high temperatures in 2022 created unfavorable conditions for the thriving of the flower meadow vegetation, resulting in a high proportion of opportunistic species. Due to the impact of stress factors, the vegetation in the plots dried up.
{"title":"Development of flower meadows in an urbanized environment","authors":"Zdenka Rózová, Anna Pástorová, Gabriel Kuczman","doi":"10.2478/eko-2023-0025","DOIUrl":"https://doi.org/10.2478/eko-2023-0025","url":null,"abstract":"Abstract With increasing urbanization, it is necessary to create green infrastructure in cities and urban areas to improve not only the quality of life for residents, but also the health and sustainability of local ecosystems. One effective way to create green spaces is by establishing meadows filled with diverse plant species. These meadows can provide numerous benefits, such as aiding pollinator conservation, improving air and water quality, and increasing biodiversity. Therefore, creating these meadows is an important component of urban ecology. Seven types of flower meadow mixtures from a Czech company were sown in 12 plots within the Hliník Urban Park in Nové Zámky, Slovak Republic. The development of the vegetation and the impact of maintenance management and climatic factors were monitored during the vegetation period of 2021‒2022, and the plots are still being monitored. The results of the flower meadow research in 2021 showed that improper maintenance and insufficient precipitation negatively influenced the vegetation’s development. Grasses were most prevalent during the summer months, while legumes were more common in the spring months. The analysis of the plots revealed that four out of 12 plots were dominated by annuals and grasses, which were the most abundant throughout the entire vegetation period. In 2022, it was observed that grasses were most prevalent in May, legumes in June and July, and annuals occurred sporadically in all plots. Insufficient precipitation and high temperatures in 2022 created unfavorable conditions for the thriving of the flower meadow vegetation, resulting in a high proportion of opportunistic species. Due to the impact of stress factors, the vegetation in the plots dried up.","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"376 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The snail and slug fauna of the Kabylia region (Bouira and Tizi-Ouzou) was studied during the years 2018/2019 and 2020/2021, focusing on seven stations belonging to three altitudinal levels (low, middle, and high altitude). A total of 5111 individuals were collected and 29 species were identified, with confirmation of the existence of Leiostyla anglica in the Kabylia region. Our results showed that altitude has a significant effect on the distribution and abundance of terrestrial gastropods in the study area – the low-altitude sites had the highest number of species (S = 21), while the high-altitude sites had the lowest species richness (S = 10).
{"title":"Diversity and ecology of terrestrial gastropods of the Kabylia region (northern Algeria)","authors":"Ghania Sadouk, Ramdane Ramdini, Medjdoub-Bensaad Ferroudja, Houria Bouaziz-Yahiatene","doi":"10.2478/eko-2023-0028","DOIUrl":"https://doi.org/10.2478/eko-2023-0028","url":null,"abstract":"Abstract The snail and slug fauna of the Kabylia region (Bouira and Tizi-Ouzou) was studied during the years 2018/2019 and 2020/2021, focusing on seven stations belonging to three altitudinal levels (low, middle, and high altitude). A total of 5111 individuals were collected and 29 species were identified, with confirmation of the existence of Leiostyla anglica in the Kabylia region. Our results showed that altitude has a significant effect on the distribution and abundance of terrestrial gastropods in the study area – the low-altitude sites had the highest number of species (S = 21), while the high-altitude sites had the lowest species richness (S = 10).","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lamia Ait Taleb, Abdelmadjid Chelli, Sadoudi Ali Ahmed Djamila, Zouaimia Abdelheq, Bensakhri Zinette, Moussa Houhamdi, Rabah Zebsa
Abstract The aim of this study is to examine the Odonata fauna structure and composition in Kabylia’s wetlands (central north Algeria) by sampling 36 potential sites (16 wadis and 20 water reservoirs) in the two main departments of this region, namely, the Kabylia of Djurdjura (Tizi Ouzou) and the Kabylia of Soummam (Bejaia). This region has one of the most important hydrographic systems in Algeria and a wide range of exceptional wetlands due to its important rainfall regime. A lack of studies, especially in the western part of the region (Tizi Ouzou), prompts a specific inventory and ecological analysis of the Odonata population over a period of 6 months (from April to September 2021). Forty species of Odonata have been recorded in Kabylia, of which Pyrrhosoma nymphula represents a new record for Algeria, raising the reference list to 64 species. There are four northern African endemic species and among these, we report on the rediscovery of the critically endangered (EN) Calopteryx exul in Algeria, recorded in the 19th century and deemed to have been extinct after an absence of more than a century; Gomphus lucasii is assessed as vulnerable (VU) and Enallagma deserti and Platycnemis subdilatata are judged as least concern (LC).
{"title":"Survey and repartition of Odonatofauna in the lotic and lentic waters of the Djurdjura and Soumman regions of Kabylia (North Central Algeria)","authors":"Lamia Ait Taleb, Abdelmadjid Chelli, Sadoudi Ali Ahmed Djamila, Zouaimia Abdelheq, Bensakhri Zinette, Moussa Houhamdi, Rabah Zebsa","doi":"10.2478/eko-2023-0026","DOIUrl":"https://doi.org/10.2478/eko-2023-0026","url":null,"abstract":"Abstract The aim of this study is to examine the Odonata fauna structure and composition in Kabylia’s wetlands (central north Algeria) by sampling 36 potential sites (16 wadis and 20 water reservoirs) in the two main departments of this region, namely, the Kabylia of Djurdjura (Tizi Ouzou) and the Kabylia of Soummam (Bejaia). This region has one of the most important hydrographic systems in Algeria and a wide range of exceptional wetlands due to its important rainfall regime. A lack of studies, especially in the western part of the region (Tizi Ouzou), prompts a specific inventory and ecological analysis of the Odonata population over a period of 6 months (from April to September 2021). Forty species of Odonata have been recorded in Kabylia, of which Pyrrhosoma nymphula represents a new record for Algeria, raising the reference list to 64 species. There are four northern African endemic species and among these, we report on the rediscovery of the critically endangered (EN) Calopteryx exul in Algeria, recorded in the 19th century and deemed to have been extinct after an absence of more than a century; Gomphus lucasii is assessed as vulnerable (VU) and Enallagma deserti and Platycnemis subdilatata are judged as least concern (LC).","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Our study was conducted between October 2021 and April 2022 at the Mekhada marsh, a wetland of international importance, located in northeastern Algeria. This site hosts large concentrations of waterbirds in winter, including waders. Through this investigation in the region, we proposed to characterise and analyse the population structure of this group of birds, which remains very poorly documented in Algeria. The results obtained indicate the presence of 16 species belonging to three families and nine genera. The maximum number of birds was counted in January 2022 (2417 individuals). The inventoried species showed two phenological statuses (wintering and sedentary breeding). Among these, three are listed on the IUCN Red List as lapwing Vanellus vanellus ; the others are listed on international bird protection agreements (AEWA, Convention of Migratory Species of Wild Animals [CMS] or are protected by Algerian legislation. The present study gives interesting and unpublished data on a group of birds that has been little investigated in Algeria and on a wetland that, due to its large area and various habitats, remains little or undocumented, particularly in terms of its ornithological richness, which is of great interest.
{"title":"Diversity and seasonal variation of wader community (Aves, Charadriiformes) in the Mekhada Marsh (northeastern Algeria)","authors":"Roumaissa Soltani, Nada Nouri, Amel Lazli","doi":"10.2478/eko-2023-0029","DOIUrl":"https://doi.org/10.2478/eko-2023-0029","url":null,"abstract":"Abstract Our study was conducted between October 2021 and April 2022 at the Mekhada marsh, a wetland of international importance, located in northeastern Algeria. This site hosts large concentrations of waterbirds in winter, including waders. Through this investigation in the region, we proposed to characterise and analyse the population structure of this group of birds, which remains very poorly documented in Algeria. The results obtained indicate the presence of 16 species belonging to three families and nine genera. The maximum number of birds was counted in January 2022 (2417 individuals). The inventoried species showed two phenological statuses (wintering and sedentary breeding). Among these, three are listed on the IUCN Red List as lapwing Vanellus vanellus ; the others are listed on international bird protection agreements (AEWA, Convention of Migratory Species of Wild Animals [CMS] or are protected by Algerian legislation. The present study gives interesting and unpublished data on a group of birds that has been little investigated in Algeria and on a wetland that, due to its large area and various habitats, remains little or undocumented, particularly in terms of its ornithological richness, which is of great interest.","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The population dynamics and behavior of the black-headed gull of an Algerian coastal wetland, El Mellah lagoon (Lake Mellah), were studied during three consecutive wintering seasons (2018–2021). Maximum numbers of the species were counted in December and January depending on the year. A peak of 536 individuals was recorded in the first half of December 2018, another of 538 individuals in the second half of December 2019, and a final peak of 636 birds in the first half of January 2021. Diurnal activity patterns showed that feeding was the primary behavior, with a mean of 24% for the three seasons. It was followed by sleeping (21%), swimming (19%), preening (18%), and flight (17%). Black-headed gulls appeared to be more active in the morning than at other times of the day. This study attempts to provide recent and unpublished data on the wintering and behavior of the black-headed gull, which remains poorly documented in North Africa and particularly in Algeria, and highlights the patterns of wetland use by these species, which could help to evaluate the importance of certain areas and develop management plans specific to coastal habitats and their avifaunal diversity.
{"title":"Population dynamics and wintering behavior of the black–headed gull <i>Chroicocephalus ridibundus</i> at El Mellah lagoon (Northeastern Algeria)","authors":"Chaima Boukhari, Amel Lazli, Nada Nouri, Sarra Benmetir, Roumaissa Soltani, Moncef Beldi, Madjid Nebbache","doi":"10.2478/eko-2023-0027","DOIUrl":"https://doi.org/10.2478/eko-2023-0027","url":null,"abstract":"Abstract The population dynamics and behavior of the black-headed gull of an Algerian coastal wetland, El Mellah lagoon (Lake Mellah), were studied during three consecutive wintering seasons (2018–2021). Maximum numbers of the species were counted in December and January depending on the year. A peak of 536 individuals was recorded in the first half of December 2018, another of 538 individuals in the second half of December 2019, and a final peak of 636 birds in the first half of January 2021. Diurnal activity patterns showed that feeding was the primary behavior, with a mean of 24% for the three seasons. It was followed by sleeping (21%), swimming (19%), preening (18%), and flight (17%). Black-headed gulls appeared to be more active in the morning than at other times of the day. This study attempts to provide recent and unpublished data on the wintering and behavior of the black-headed gull, which remains poorly documented in North Africa and particularly in Algeria, and highlights the patterns of wetland use by these species, which could help to evaluate the importance of certain areas and develop management plans specific to coastal habitats and their avifaunal diversity.","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract It is known that aquatic macrophytes are an important part of freshwater ecosystems, and that they play a different role in their structure and functioning. Their presence and distribution depends on water temperature and transparency, nutrient content, conductivity, pH, chemical composition and water circulation. Therefore, the goal of our research was to determine the influence and interrelationship of physicochemical parameters of water on the content of photosynthetic pigments in aquatic macrophytes of Lake Necik, in the Ramsar area of Bardača (Republic of Srpska). Content of total chlorophyll ( a + b ) during the growing season (June–October) ranged from 0.231 to 1.145 mg g −1 FW in Phragmites communis Trin. ex Steud., from 0.061 to 0.541 mg g −1 FW in Salvinia natans L. (All.), from 0.063 to 0.626 mg g −1 FW in Utricularia vulgaris L. and from 0.063 to 0.443 mg g −1 FW in Ceratophyllum demersum L. Research has shown that floating and submerged macrophytes have a lower ratio of chlorophyll a / b compared to emergent hydrophytes, which is most likely the result of stress caused by increased light intensity and temperature. Seasonal variations in the content of photosynthetic pigments indicated that the species Phragmites communis proved to be more tolerant to the stress caused by the influence of various abiotic factors, while Salvinia natans proved to be more sensitive. Spearmon’s correlation coefficient of the physicochemical parameters of water and the concentration of photosynthetic pigments of macrophytes showed a significant influence of certain abiotic factors (temperature, transparency and nutrients) on the content of pigments in the leaves of Phragmites communis, Salvinia natans , Utricularia vulgaris and Ceratophyllum demersum L.
{"title":"Content of photosynthetic pigments in <i>Phragmites communis</i> (Cav.) Trin. ex Steud., <i>Salvinia natans</i> L. (All.), <i>Utricularia vulgaris</i> L. and <i>Ceratophyllum demersum</i> L. during the season in the area of the Bardača pond (Republika Srpska)","authors":"Tanja Maksimović, Svjetlana Lolić, Biljana Kukavica","doi":"10.2478/eko-2023-0023","DOIUrl":"https://doi.org/10.2478/eko-2023-0023","url":null,"abstract":"Abstract It is known that aquatic macrophytes are an important part of freshwater ecosystems, and that they play a different role in their structure and functioning. Their presence and distribution depends on water temperature and transparency, nutrient content, conductivity, pH, chemical composition and water circulation. Therefore, the goal of our research was to determine the influence and interrelationship of physicochemical parameters of water on the content of photosynthetic pigments in aquatic macrophytes of Lake Necik, in the Ramsar area of Bardača (Republic of Srpska). Content of total chlorophyll ( a + b ) during the growing season (June–October) ranged from 0.231 to 1.145 mg g −1 FW in Phragmites communis Trin. ex Steud., from 0.061 to 0.541 mg g −1 FW in Salvinia natans L. (All.), from 0.063 to 0.626 mg g −1 FW in Utricularia vulgaris L. and from 0.063 to 0.443 mg g −1 FW in Ceratophyllum demersum L. Research has shown that floating and submerged macrophytes have a lower ratio of chlorophyll a / b compared to emergent hydrophytes, which is most likely the result of stress caused by increased light intensity and temperature. Seasonal variations in the content of photosynthetic pigments indicated that the species Phragmites communis proved to be more tolerant to the stress caused by the influence of various abiotic factors, while Salvinia natans proved to be more sensitive. Spearmon’s correlation coefficient of the physicochemical parameters of water and the concentration of photosynthetic pigments of macrophytes showed a significant influence of certain abiotic factors (temperature, transparency and nutrients) on the content of pigments in the leaves of Phragmites communis, Salvinia natans , Utricularia vulgaris and Ceratophyllum demersum L.","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The purpose of the study is the identification and forecasting of socioecological effects from the implementation of environmental responsibility by industrial enterprises at the local level. The development of methodical approaches and practical recommendations for the organizational and economic support of environmental responsibility to improve social tension in the industrial region is explored. The process of the assessment of the level of environmental responsibility of an industrial enterprise is improved based on the factors of its environmental obligation and environmental initiative. It is proposed to assess the level of environmental responsibility of enterprises not only on the basis of widely used coefficients characterizing the level of pollution, but also taking into account the level of environmental initiative of the enterprises under study, which is expressed mainly through social investments.
{"title":"Approaches to assessing the environmental responsibility of enterprises in the industrial region","authors":"Mariia Bieloborodova, Anna Bessonova","doi":"10.2478/eko-2023-0030","DOIUrl":"https://doi.org/10.2478/eko-2023-0030","url":null,"abstract":"Abstract The purpose of the study is the identification and forecasting of socioecological effects from the implementation of environmental responsibility by industrial enterprises at the local level. The development of methodical approaches and practical recommendations for the organizational and economic support of environmental responsibility to improve social tension in the industrial region is explored. The process of the assessment of the level of environmental responsibility of an industrial enterprise is improved based on the factors of its environmental obligation and environmental initiative. It is proposed to assess the level of environmental responsibility of enterprises not only on the basis of widely used coefficients characterizing the level of pollution, but also taking into account the level of environmental initiative of the enterprises under study, which is expressed mainly through social investments.","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gaoussou Sylla, Talnan Jean Honoré Coulibaly, Naga Coulibaly, Koffi Claude Alain Kouadio, Houebagnon Saint Jean Patrick Coulibaly, Souleymane Cissé, Kambiré Sie
Abstract Protected areas play a crucial role in preserving biological diversity, providing ecosystem services, and regulating hydroclimatic processes. However, the environmental balance of these areas is increasingly under threat due to rapid population growth, high demand for natural resources, and the effects of global warming. To address this, sustainable management of protected areas is essential. This study aims to develop a methodology for monitoring and assessing levels of nocturnal anthropogenic aggression in the Comoé National Park (CNP) in Côte d’Ivoire. By using geospatial data from the Day/Night Band of the Visible Infrared Imaging Radiometer Suite (VIIRS/DNB), the study characterizes the nocturnal anthropization of CNP through the use of several indices. First, light reflectance density is used to identify nighttime light emission foci. Second, the lighted area density index (LADI) is employed to understand the nature of nocturnal activities taking place within CNP, as indicated by artificial light at night (ALAN). Finally, the light intensity index (LII) is used to evaluate the degree of influence of nocturnal anthropogenic activities on biodiversity. The study also found important activities through LADI and observed a high level of light pollution in CNP. Ultimately, the findings of this study indicate that there is a significant level of nocturnal anthropization within CNP, highlighting the need for effective management and conservation efforts in the area.
{"title":"Spatial assessment of nighttime anthropization in the Comoé National Park in Côte d’Ivoira (West Africa)","authors":"Gaoussou Sylla, Talnan Jean Honoré Coulibaly, Naga Coulibaly, Koffi Claude Alain Kouadio, Houebagnon Saint Jean Patrick Coulibaly, Souleymane Cissé, Kambiré Sie","doi":"10.2478/eko-2023-0032","DOIUrl":"https://doi.org/10.2478/eko-2023-0032","url":null,"abstract":"Abstract Protected areas play a crucial role in preserving biological diversity, providing ecosystem services, and regulating hydroclimatic processes. However, the environmental balance of these areas is increasingly under threat due to rapid population growth, high demand for natural resources, and the effects of global warming. To address this, sustainable management of protected areas is essential. This study aims to develop a methodology for monitoring and assessing levels of nocturnal anthropogenic aggression in the Comoé National Park (CNP) in Côte d’Ivoire. By using geospatial data from the Day/Night Band of the Visible Infrared Imaging Radiometer Suite (VIIRS/DNB), the study characterizes the nocturnal anthropization of CNP through the use of several indices. First, light reflectance density is used to identify nighttime light emission foci. Second, the lighted area density index (LADI) is employed to understand the nature of nocturnal activities taking place within CNP, as indicated by artificial light at night (ALAN). Finally, the light intensity index (LII) is used to evaluate the degree of influence of nocturnal anthropogenic activities on biodiversity. The study also found important activities through LADI and observed a high level of light pollution in CNP. Ultimately, the findings of this study indicate that there is a significant level of nocturnal anthropization within CNP, highlighting the need for effective management and conservation efforts in the area.","PeriodicalId":53683,"journal":{"name":"Ekologia Bratislava","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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