<abstract xmlns="http://www.w3.org/1999/xhtml">

This paper documents the structure of flow and bed morphology of a cutoff meander of the Danube River in relationship with a GIS approach. The cutoffs effect produce changes in the repartition of the water and sediment fluxes between the natural channel and the manmade canal, with direct implications on the environmental evolution of the delta. The Dranov de Jos meander (Lower Dranov meander ‒ LDM) belt seems to be one of the most affected by the rectification works performed on Sfântu Gheorghe branch between 1981 and 1992. The upstream and downstream parts of the cutoff are characterized by the decrease of the channel width by banks sedimentation (with the rate of ‒6.2 m/year) and at the apex zone, the bank’s sedimentation is associated with intense sediment infilling of the central part of the channel, where a large deposit of 950 m in length and 190 m in width is formed.
</abstract>

Intensive Infilling Processes of a Cutoff Meander in the Danube Delta

<abstract xmlns="http://www.w3.org/1999/xhtml">

Microbial spectrum and antibiogram of bacteria isolated from <italic>Panulirus regius</italic> of the coast of Lagos were analysed using standard techniques. The lobster head had higher total bacteria and total coliform counts with respective significant (<italic>P</italic> &lt; 0.05) values of 4.17 x 106 ± 1.46 CFU g−1 and 3.06 x 103 ± 1.56 CFU g−1. A higher total fungi count (2.99 x 102 ± 1.63) was recorded in the lobster tail. In the bacterial group, <italic>Bacilus megaterium</italic> had the highest frequency of occurrence (22.6%) while in the fungal group, <italic>Aspergillus niger</italic> had the highest frequency of occurrence (20.0%). All isolates were sensitive to ciprofloxacin and showed resistance to rocephin and zinnacef except <italic>Micrococcus</italic> sp. and <italic>Salmonella</italic> sp. The presence of antibiotic-resistant bacteria from the lobsters is a serious concern.
</abstract>

Microbial Spectrum and Antibiotic Sensitivity Pattern of Bacteria Isolated from the Spiny Lobster, <italic>Panulirus regius</italic> (De Brito Capello, 1864)

<abstract xmlns="http://www.w3.org/1999/xhtml">

Statistically significant differences between phytoplankton of the pelagic area and littoral zone, overgrown with macrophytes, were observed in seven reservoirs and three natural lakes. Both total biomass and species diversity of the phytoplankton were higher in the macrophyte settlements than in the pelagic zone. Regarding biomass, the divisions of Pyrrhophyta and Cryptophyta were the main contributors to the similarity of the pelagic areas while the pennate Bacillariophyta were the main contributors to the similarity of macrophyte zones. The phytoplankton structure in the littoral zone differed also within the same water body but in sites with different macrophyte dominant species, as the differences concerned mainly the ratio between pennate diatoms and conjugatophyceans.
</abstract>

Phytoplankton Community of the Pelagic and the Macrophyte-Rich Littoral Zone in Some Bulgarian Inland Waters

<abstract xmlns="http://www.w3.org/1999/xhtml">

Peatlands are one of the globally important ecosystems. Blanket bogs are a type of peatlands where water is generally supplied by meteorological events (rain, snow). We have been conducting the first detailed algal flora study of blanket bogs of Turkey and found new records of algae genera ever given for Turkey. Here, we report a total of four desmids genera identified as new records for freshwater algal flora of Turkey: <italic>Spirotaenia</italic> (<italic>Spirotaenia condensata</italic>, <italic>Spirotaenia erythrocephala</italic>), <italic>Mesotaenium</italic> (<italic>Mesotaenium macrococcum</italic>), <italic>Hyalotheca</italic> (<italic>Hyalotheca dissiliens</italic>), and <italic>Bambusina</italic> (<italic>Bambusina borreri</italic>). Their ecological habitat is also discussed to highlight the importance of protection and sustainability of these unique areas.
</abstract>

Gümüşhane University, Faculty of Engineering and Natural Sciences

Eskişehir Osmangazi University, Faculty of Agriculture

New Records of Desmids from Blanket Bogs in Turkey

<abstract xmlns="http://www.w3.org/1999/xhtml">

This study determined the state of conservation and association of abiotic variables in the mangrove forest of Playa Blanca, Holguin, Cuba. Three randomly located transects were made, each of 100 m2 (10 x 10 m). A stress level (0.06) was obtained, allowing to establish a good level of adjustment in the distribution of the ecological distances of both species in relation to the previously established chemical-physical parameters. A poor state of conservation of the Playa Blanca mangrove forest is confirmed, and a strong association between temperature and the total height of the trunk of both mangrove species present.
</abstract>

Centro de Investigación y Servicios Ambientales de Holguín. Departamento de Gestión Costera y Recursos Naturales

Facultad Ciencias Empresariales y Administración. Departamento Economía. Ave. XX aniversario Delivery Piedra Blanca

Status of Conservation of the Mangrove of Playa Blanca, Holguin (Cuba)

<abstract xmlns="http://www.w3.org/1999/xhtml">

<italic>Pterois miles</italic> (Bennett, 1828), one of the most destructive marine invaders, was reported from the Mediterranean in 1991. It has invaded most parts of the Mediterranean from 2013, when it was reported for the second time, until today. On 7th October 2020, a single specimen of <italic>P. miles</italic> was collected by the bottom trawl from the Edremit Bay (Northern Aegean Sea). COI barcode region was used for the molecular identification of the specimen. DNA barcode data suggest that the specimen used in the present study is <italic>P. miles</italic> with a 99.69% probability. The current study is presented by providing the northernmost occurrence of the <italic>P. miles</italic> from the Aegean Sea with molecular confirmation.
</abstract>

Unwanted Guest Continues its Northern Journey in the Aegean Sea: <italic>Pterois miles</italic> (Bennett, 1828)

<abstract xmlns="http://www.w3.org/1999/xhtml">

This paper presents data compilation for invertebrates and protists indicator taxa of organic pollution and trophic state of continental waters. Information was collected from research papers, monographs, electronic resources, and our own research. Altogether 1732 indicator taxa of Kingdoms Protista, Protozoa, Chromista, and Animalia from 19 taxonomical Phyla are represented with ecological preferences for saprobity with saprobity index (S) and trophic state. This comprehensive data can be used for the purpose of aquatic ecosystem assessment and monitoring of water quality based on bioindication methods.
</abstract>

Zoological Water Quality Indicators for Assessment of Organic Pollution and Trophic Status of Continental Water Bodies

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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 24 (2022): Issue 3 (December 2022)

Intensive Infilling Processes of a Cutoff Meander in the Danube Delta

Microbial Spectrum and Antibiotic Sensitivity Pattern of Bacteria Isolated from the Spiny Lobster, Panulirus regius (De Brito Capello, 1864)

Phytoplankton Community of the Pelagic and the Macrophyte-Rich Littoral Zone in Some Bulgarian Inland Waters

New Records of Desmids from Blanket Bogs in Turkey

Status of Conservation of the Mangrove of Playa Blanca, Holguin (Cuba)

Unwanted Guest Continues its Northern Journey in the Aegean Sea: Pterois miles (Bennett, 1828)

Zoological Water Quality Indicators for Assessment of Organic Pollution and Trophic Status of Continental Water Bodies

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