<abstract xmlns="http://www.w3.org/1999/xhtml">The ecological analysis of 31 algae and cyanobacteria indicators assessed the water quality of the Changchun drinking water Xinlicheng Reservoir by using bio-indication methods. The water was fresh, low alkaline, low-saline, middle oxygenated, with reached nutrients and organic pollution and mesotrophic to eutrophic. Statistics reveal significant variables that impacted algal diversity were nutrients, water quality was low to the middle polluted Class II-III. The indices of saprobity and WESI show the high self-purification capacity and low-toxicity impact. We revealed potential threatening species of cyanobacteria. The improving water quality from 2007 up to now has been revealed.</abstract>

Key Laboratory of Groundwater Resources and Environment

Bioindication of Water Quality of the Xinlicheng Reservoir by Algal Communities

<abstract xmlns="http://www.w3.org/1999/xhtml">Vegetation of Cameroon includes a variety of landscape types with high biodiversity. Ecological monitoring of Yaoundé requires visualization of vegetation types in context of climate change. Vegetation Indices (VIs) derived from Sentinel-2 multispectral satellite image were analyzed in SAGA GIS to separate wetland biomes, as well as savannah and tropical rainforests. The methodology includes computing 6 VIs: NDVI, DVI, SAVI, RVI, TTVI, CTVI. The VIs shown correlation of data with vegetation distribution rising from wetlands, grassland, savanna, and shrub land towards tropical rainforests, increasing values along with canopy greenness, while also being inversely proportional to soils, urban spaces and Sanaga River. The study contributed to the environmental studies of Cameroon and demonstration of the satellite image processing.</abstract>

Sentinel-2 for High Resolution Mapping of Slope-Based Vegetation Indices Using Machine Learning By SAGA GIS

<abstract xmlns="http://www.w3.org/1999/xhtml"><italic>Thespesia populnea</italic> is a coastal evergreen tree species which flowers seasonally. The flowers are hermaphroditic, self-compatible, self-pollinating, and principally melittophilous. The fruits are indehiscent, turban-shaped, capsules, which release seeds in tidal water upon the decay of their pericarp. Both fruits and seeds are buoyant and typically hydrochorous. This species is a source of wood, dye, food, traditional medicine, being also used as an ornamental and avenue tree. Therefore, it is important in coastal eco-restoration and carbon sequestration.</abstract>

Pollination Ecology of Indian Tulip Tree, <italic>Thespesia Populnea</italic> (L.) Sol. Ex Correa (Malvaceae), a Valuable Evergreen Tree Species for Coastal Ecorestoration

<abstract xmlns="http://www.w3.org/1999/xhtml">The aim of this study was to investigate the global distribution of a non-indigenous and invasive fish species, the convict cichlid <italic>Amatitlania nigrofasciata</italic>, over time, with an emphasis on the inland waters of Iran. The results showed that the distribution range of the convict cichlid was initially based in Central America. Then, the distribution range of this species expanded to parts of North America. Finally, this fish species was introduced to other parts of the world such as Australia, Israel, Italy, Colombia, Germany, Peru, Slovakia, Japan, Indonesia, the Philippines, and Iran due to its extensive ability to spread. So far the presence of <italic>A. nigrofasciata</italic> has been reported in two domestic basins in Iran, namely Hormuz and Namak Lake. This study indicated that the distribution range of this species is not currently wide, but it is likely to expand towards the central plateau and southern parts of Iran.</abstract>

Investigation on the Global Distribution of Invasive Fish Species, Convict Cichlid <italic>Amatitlania Nigrofasciata</italic> (Perciformes, Cichlidae) Over the Past Years with Emphasis on Iranian Inland Waters

<abstract xmlns="http://www.w3.org/1999/xhtml">This study is aimed to determine the diversity and structure of the ichthyologic communities in the coral reefs of Holguín, Cuba. A total of 85 fish species were recorded, including in 32 families and 53 genera. Low species richness and equitability were estimated at different sampling sites throughout the reef system. Cadena de Vita and Canto Chiquito are the sites with the highest number of species 47 and 46 respectively. Cueva 1 and Punta Naranjo were the places with the highest equitability 0.76. Replacement of fish species among the reef sites studied is poor. Canto Azul with Canto Pionero and La Llanita, sharing 29 species. These results reflect a poor state of conservation of the marine fish communities in Holguín.</abstract>

Diversity and Structure of the Ichthyologic Communities in the Diving Sites in Holguin (Cuba)

<abstract xmlns="http://www.w3.org/1999/xhtml">Ichthyofauna surveys in Diyung, Vomvadung, Khualzangvadung, Tuikoi, and Mahur rivers under Dima Hasao District of Assam resulted in the first report of 21 species of fish belonging to 19 genera, eight families, and four orders. These include Cypriniformes, Siluriformes, Synbranchiformes, and Perciformes. The species composition is highest in Vomvadung River with 11 species, followed by Diyung with eight species, Khualzangvadung with six species, Mohur with three species, and Tuikoi with two species. The conservation status of <italic>Systomus clavatus</italic>, <italic>Tor tor</italic>, <italic>Neolissochilus hexagonolepis</italic>, <italic>Neolissochilus hexastichus</italic> is near threatened, and <italic>Pterocryptis barakensis</italic> is endangered.</abstract>

On a Recent Pioneering Taxonomic Study of the Fishes from Rivers Diyung, Vomvadung, Khualzangvadung, Tuikoi and Mahur in Dima Hasao District of Assam (India)

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Transylvanian Review of Systematical and Ecological Research

 Publishing House and Owner: Lucian Blaga University of Sibiu, Romania  Founded 1999, is an international scientific publication, edited in Sibiu, Romania. It publishes original work dealing with basic aspects, particularly of ecology, systematics and related fields.  Transylvanian Review of Systematical and Ecological Research deal with the worldwide publishing of original articles and reviews related to the theoretical, experimental, and applied aspects, particularly of ecology, biology, systematics, environmental sciences and related fields. We publish high quality papers concerned to habitats, species, associations, communities, ecosystems in their natural state or under anthropogenic threats, risks, and impacts. The published information, data, discussions, and conclusions must exceed the edges of case studies, highlight significant results using any ecological approach, and for that reason only publish papers with robust ecological messages that improve our knowledge of ecological principles, reality, and trends.  Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 

Transylvanian Review of Systematical and Ecological Research

Volume 22 (2020): Issue 3 (December 2020)

Bioindication of Water Quality of the Xinlicheng Reservoir by Algal Communities

Sentinel-2 for High Resolution Mapping of Slope-Based Vegetation Indices Using Machine Learning By SAGA GIS

Pollination Ecology of Indian Tulip Tree, Thespesia Populnea (L.) Sol. Ex Correa (Malvaceae), a Valuable Evergreen Tree Species for Coastal Ecorestoration

Investigation on the Global Distribution of Invasive Fish Species, Convict Cichlid Amatitlania Nigrofasciata (Perciformes, Cichlidae) Over the Past Years with Emphasis on Iranian Inland Waters

Diversity and Structure of the Ichthyologic Communities in the Diving Sites in Holguin (Cuba)

On a Recent Pioneering Taxonomic Study of the Fishes from Rivers Diyung, Vomvadung, Khualzangvadung, Tuikoi and Mahur in Dima Hasao District of Assam (India)

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