DOI: https://www.doi.org/10.59277/TISER.2025

ISSN: 0301-9187

EISSN: 2067-9033

SOMMAIRE

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Ionel G. Tabacaru (1932–2024), overview of his scientific activities

DAN L. DANIELOPOL, ANDREI GIURGINCA

Cuvinte cheie: invertebrate taxa, taxonomy, phylogeny, biogeography, sociology of science

Articol: The essay retraces the scientific activity of Dr. Ionel Grigorie Tabacaru viewed under three aspects: (1) the working-places and the personalities of the specialists with whom he collaborated; (2) the invertebrate groups he studied: aquatic insect larvae of Ephemeroptera and Plecoptera, terrestrial arthropods belonging to two groups Myriapoda (Diplopoda and Symphyla) and finally, Crustacea Isopoda, especially Oniscidea; (3) social activities related to his scientific research at different moments of his career.

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Two new species of Trichoniscus with gland-piliferous organs (Isopoda, Oniscidea) from northern Tuscany (Central Italy)

STEFANO TAITI, GIUSEPPE MONTESANTO

Cuvinte cheie: Isopoda, Oniscidea, Trichoniscidae, new species, gland-piliferous organs, Tuscany

DOI: https://www.doi.org/10.59277/TISER.2025.01

Articol: Three species of Trichoniscus, characterized by males bearing gland-piliferous organs, are recorded from northern Tuscany, Italy. Two of these species are described as new: Trichoniscus tabacarui n. sp. and T. glandulifer n. sp. A third species, identified as Trichoniscus sulcatus Verhoeff, 1917 and originally described from South Tyrol, is redescribed on specimens collected in Tuscany. Based on the shape of the male pleopod 1, all these species belong to the Trichoniscus provisorius group.

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The classification of Malacostraca – A response to Schram & Koenemann (2021)

IONEL TABACARU, ANDREI GIURGINCA

Cuvinte cheie: Crustacea, Malacostraca, revised systematics

DOI: https://www.doi.org/10.59277/TISER.2025.02

Articol: The classification of Malacostraca as presented by Schram & Koenemann (2021) is compared with the classification argued by Tabacaru & Danielopol (2011, 2012) and a new framework of the Malacostraca phylogeny and systematics is emphasized.

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Coleoptera of the karst system of Romania

EUGEN NITZU

Cuvinte cheie: Coleoptera, exokarst, mesovoid shallow substratum (MSS), caves, Carpathians, Dobrogea

DOI: https://www.doi.org/10.59277/TISER.2025.03

Articol: A synthesis of over 35 years of coleopterological investigations carried out by the author in the karst system of Romania is presented. We aimed to provide a comprehensive study of the diversity and species richness of the coleopteran fauna of karst areas. The vertical distribution of species and the similarities in species composition between the karst areas of Romania are analyzed. A list of 810 coleopteran species identified to date in the karst system of Romania is presented, together with their epigean, endogean or subterranean records in the Carpathians and Dobrogea. 46% of the recorded species were found in subterranean environments (MSS and caves). Of these, only 13% were troglobionts (specialist cave dwelling species).

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Groundwater Harpacticoids (Crustacea, Copepoda: Harpacticoida) in the karst areas of Apuseni Mountains (northwestern Romania)

DRAGOȘ IULIAN COADĂ, CARMEN BĂDĂLUȚĂ, RĂZVAN DUMBRAVĂ, KARINA BATTES, SANDA IEPURE

Cuvinte cheie: distribution, diversity, endemicity, groundwater, Harpacticoida

DOI: https://www.doi.org/10.59277/TISER.2025.04

Articol: Harpacticoid copepods – a diverse and abundant crustacean order in groundwater – have been studied in Romania since the early 20th century, mainly by the Swiss researcher P. A. Chappuis. The Apuseni Mountains in northwestern Romania are the most studied area, with 31 species and subspecies reported from all types of groundwater habitats, representing half of the species known at the country level. The Pădurea Craiului is the most investigated karst unit within the Apuseni, showing the highest number of records (122) and species (28), with the highest diversity of species found in the Crișul Repede and Crișul Negru river basins. Bihor-Vlădeasa is the second most studied area, with 18 species, including cold-stenotherm species like Bryocamptus (Arcticocamptus) cuspidatus cuspidatus and Spelaeocamptus spelaeus. Only two endemic species have been identified in the Apuseni, S. spelaeus (in various groundwater habitats from both Pădurea Craiului and Bihor-Vlădeasa) and Elaphoidella winkleri (in a single cave within the Bihor-Vlădeasa unit). The dataset presented here extends over a period of more than 90 years allowing to evidence the historical research on this group of crustaceans in the Apuseni and to identify the future research directions to enhance the knowledge in groundwater of this emblematic karst region of Romania.

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Anthropogenic impact on the karst aquifer quality: preliminary results from Damiș – Ponoraș karst area, Romania

DANIELA R. BORDA, RUXANDRA M. BUCUR, LIVIU BUZILĂ, IOAN COCIUBA

Cuvinte cheie: karst drainage systems, springs, ponors, resurgences, water physical-chemical profile, microbial content, aquatic invertebrates, anthropic impact

DOI: https://www.doi.org/10.59277/TISER.2025.05

Articol: Karst aquifers are crucial water resources but are highly vulnerable due to their geological fragility and anthropogenic pressures. This study assesses water quality in the Damiș-Ponoraș Karst Area (DPKA), where the expansion of the drinking water network has occurred without proper sewerage systems. The investigation focused on the Dămișenilor Karst System (DKS) and included, for comparison, the Ponoraș Karst System and three other springs from the Brătcuței Valley that also collect discharge from the DPKA resurgences. In total, twelve water sources were sampled seasonally from 2023 to 2025, with analysis of physicochemical parameters, microbial content, and aquatic invertebrate assemblages. The geological structure of the DPKA shapes distinct physical and chemical properties among springs, ponors, and resurgences, as well as within its drainage systems. While all waters exhibit typical karst characteristics, including high alkalinity, conductivity, dissolved solids, and hardness, DKS sites show specific variations: springs had lower pH, calcium hardness and conductivity, ponors showed higher turbidity and lower redox potential, suggesting pollutant susceptibility, while the increased magnesium hardness at resurgence indicates flow through dolomitic strata. Measured concentrations of nitrates, nitrites, ammonia, and phosphates were low and complied with drinking water quality standards, but widespread microbial contamination with total mesophilic bacteria, Klebsiella oxytoca, Pseudomonas aeruginosa, and Escherichia coli was present. In the DKS resurgence, anthropogenic pressures, mainly bacterial contamination from domestic wastewater, are linked to reduced invertebrate richness and abundance, indicating declining ecological quality. A concurrent, gradual decrease in microbial and invertebrate abundance along the karst hydrological continuum, from springs to ponors and resurgence points, suggests the influence of poorly understood subsurface processes. These results highlight that ongoing human impacts may threaten aquifer water quality and ecological stability, underscoring the need for integrated monitoring using abiotic and biotic indicators to support timely management actions.

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New distributional records for the species Trachelipus trilobatus (Stein, 1859) (Isopoda: Oniscidea, Trachelipodidae) in Romania

ANDREI GIURGINCA, VLAD GEORGE CRUCERU, NICOLAE CRUCERU

Cuvinte cheie: Isopoda, Oniscidea, Trachelipodidae, T. trilobatus

DOI: https://www.doi.org/10.59277/TISER.2025.06

Articol: The species Trachelipus trilobatus, long considered as restricted to the western side of the Timiş-Cerna Corridor, was found to have a wider distribution in Romania. The new locations, found in the collection of the “E. Racovitza” Institute of Speleology and data from references, enlarge our knowledge on the species T. trilobatus.

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PAUROPUS BAGNALLI VS. PAUROPUS LERUTHI: A DEBATE

ANDREI GIURGINCA

Cuvinte cheie: Pauropoda, Pauropodidae, Pauropus bagnalli, Pauropus leruthi

DOI: https://www.doi.org/10.59277/TISER.2025.07

Articol: The paper follows the history of the species Pauropus leruthi and argues based on this history and the ICZN, on the correct name as Pauropus leruthi (Remy, 1939).

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Ionel G. Tabacaru (1932–2024) – teacher, colleague, friend

DAN L. DANIELOPOL, NICOLE COINEAU, ILINCA JUVARA-BALȘ

Cuvinte cheie: essay, cultural notes, scientific significance

Articol: This essay retraces through a recollection of souvenirs the scientific and human personality of Ionel G. Tabacaru.

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