Factors determining parasite abundance in European perch, Perca fluviatilis, European whitefish, Coregonus lavaretus, and Arctic charr, Salvelinus alpinus, in an oligotrophic lake,... by Tom Robin Olk, Ann-Cecilie Henriksen, Solveig Irene Dolven, Mathias Leithe Haukø, Espen Lydersen, Tor Atle Mo

“…This corresponds well with the δ13C signatures in the three species, indicating that European perch primarily fed in the littoral zone (δ13C: -24.9 ± 2.5 ‰), Arctic charr in the pelagic and profundal zone (δ13C: -29.4 ± 1.1 ‰), while European whitefish both fed in the littoral and pelagic zone (δ13C: -28.3 ± 2.3 ‰) of Lake Norsjø. Individual abundances of parasites depended on host age, length, sex, δ15N, and season. …”
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Prevalence of parasites in fish from the pelagic and benthic zones by Juriah Kamaludeen, Mohammad Nasir Hassan, Masnindah Malahubban, Kamil Latif, Lirong Yu Abit, Sharifah Salmah Syed Hussain, Suhaili Mustafa, Diah Puspawaty Tisna Baharuddin, Nora Faten Afifah Mohamad, Muhammad Hakim Mohammad Ali Hanafiah, Bura Thlama Paul, Pertiwi, Herinda, Altwaim, Sarah A.

“…The present research is a comparative study on the prevalence of parasites in marine finfish among the two major marine zones; namely the pelagic zone and benthic zone. The objectives of the present study were to investigate the parasite prevalence in both zones, as well as to determine the effect of differing marine zones regarding the presence of parasites in fish. …”
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Prevalence of parasites in fish from the pelagic and benthic zones by Kamaludeen, Juriah, Hassan, Mohammad Nasir, Malahubban, Masnindah, Latif, Kamil, Yu Abit, Lirong, Syed Hussain, Sharifah Salmah, Mustafa, Suhaili, Mohamad, Nora Faten Afifah, Mohammad Ali Hanafiah, Muhammad Hakim, Bura Thlama, Paul, Pertiwi, Herinda, A. Altwaim, Sarah

“…The present research is a comparative study on the prevalence of parasites in marine finfish among the two major marine zones; namely the pelagic zone and benthic zone. The objectives of the present study were to investigate the parasite prevalence in both zones, as well as to determine the effect of differing marine zones regarding the presence of parasites in fish. …”
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Ecología trófica de la caballa (Scombridae, Scomber japonicus marplatensis) del Atlántico sudoccidental by Victor Angelescu

“…<abstract language="eng">This study describes the scheme of the interspecific trophic relationships in the pelagic zone of the Argentine continental shelf in the coastal water region along the Province of Buenos Aires, in which the mackerel occupies the trophic levels corresponding to a plankton feeder of copepods of the zooplankton (third level), and to a small predator of the micronecton fish (fourth and fifth levels). …”
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Case Study of Diesters of o-Phthalic Acid in Surface Waters with Background Levels of Pollution by Alexander Gorshkov, Tatyana Grigoryeva, Yurij Bukin, Anton Kuzmin

“…The main PAE source was found to be the atmospheric transfer of polluted air masses, while the supply of PAEs from coastal sources to the pelagic zone was low. The contribution of biogenic sources to the background level of PAEs in the surface waters of Lake Baikal was established. …”
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Zooplankton as Mercury Repository in Lake Maggiore (Northern Italy): Biomass Composition and Stable Isotope Analysis by Laura Marziali, Roberta Piscia, Lucia Valsecchi, Claudio Roscioli, Marina Manca

“…Mercury stock in the zooplankton compartment ranged between 19–140 ng THg m⁻² and 6–44 ng MeHg m⁻² for the ≥450 µm size fraction and between 2–66 ng THg m⁻² and 1–7 ng MeHg m⁻² for the ≥850 µm fraction, with the highest values in spring when zooplanktivorous fish actively prey in the pelagic zone. The results highlighted the crucial role of zooplankton as a repository of mercury, easily available to higher trophic levels.…”
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Depth profile of reservoir water quality in the Southwest of Ethiopia by Bizuneh Woldeab, Argaw Ambelu, Zewdu Efrem, Siyoum Deribe, Moa Megersa, Tibebu Alemu, Seid Tiku Mereta

“…The presence of dense masses of blue-green algae in the pelagic zone of Gilgel Gibe I reservoir suggested the presence of ample nutrients for its blooming and significant reduction of water quality, indicating possible eutrophic conditions. …”
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Transparent Exopolymer Particles (TEP), phytoplankton and picocyanobacteria a littoral-to-pelagic depth-gradient in a large subalpine lake by Cristiana Callieri, J. Salvador Hernández-Avilés, Ester M. Eckert, Michela Rogora, Gabriele Tartari, Tommaso Sforzi, Raffaella Sabatino, Roberto Bertoni

“…On the other hand, TEP was fairly evenly distributed along the horizontal transect from littoral to pelagic zone, although patches were present in spring, when TEP concentrations were low. …”
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Mesozooplankton biodiversity, vertical assemblages, and diel migration in the western tropical Pacific Ocean revealed by eDNA metabarcoding and morphological methods by Yunzhi Feng, Yunzhi Feng, Dong Sun, Dong Sun, Qianwen Shao, Qianwen Shao, Chen Fang, Chen Fang, Chunsheng Wang, Chunsheng Wang, Chunsheng Wang

“…However, due to issues with morphological identification and sampling methods, knowledge of their biodiversity and community structure in the vast pelagic zone of the western tropical Pacific Ocean is still limited compared with other areas in the North Pacific Ocean. …”
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Metagenomics of Antarctic Marine Sediment Reveals Potential for Diverse Chemolithoautotrophy by Arkadiy I. Garber, Jessica R. Zehnpfennig, Cody S. Sheik, Michael W. Henson, Gustavo A. Ramírez, Andrew R. Mahon, Kenneth M. Halanych, Deric R. Learman

“…Metagenomic data collected from sediment samples from the continental shelf of western Antarctica help to examine this unique system and document the metagenomic potential for lithotrophic metabolisms and the cycles of both nitrogen and sulfur, which support not only benthic microbes but also life in the pelagic zone.…”
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Uncharted digenean diversity in Lake Tanganyika: cryptogonimids (Digenea: Cryptogonimidae) infecting endemic lates perches (Actinopterygii: Latidae) by Nikol Kmentová, Rodney A. Bray, Stephan Koblmüller, Tom Artois, Els Lea R. De Keyzer, Milan Gelnar, Maarten P. M. Vanhove, Simona Georgieva

“…Although the most famous group within the lake’s fish fauna are cichlids, the pelagic zone is occupied mainly by endemic species of clupeids (Actinopterygii: Clupeidae) and lates perches (Actinopterygii: Latidae, Lates Cuvier), which are an important commercial source for local fisheries. …”
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The Majority of Active Rhodobacteraceae in Marine Sediments Belong to Uncultured Genera: A Molecular Approach to Link Their Distribution to Environmental Conditions by Marion Pohlner, Leon Dlugosch, Bernd Wemheuer, Heath Mills, Bert Engelen, Brandi Kiel Reese

“…Thus, knowledge on these community members is limited, even though their absolute numbers might exceed those from the pelagic zone by orders of magnitudes. To unravel the distribution and diversity of benthic, metabolically active Rhodobacteraceae, we have now analyzed an already existing library of bacterial 16S rRNA transcripts. …”
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Communities of T4-like bacteriophages associated with bacteria in Lake Baikal: diversity and biogeography by Sergey Anatoljevich Potapov, Irina Vasilievna Tikhonova, Andrey Yurjevich Krasnopeev, Maria Yurjevna Suslova, Natalia Albertovna Zhuchenko, Valentin Valerianovich Drucker, Olga Ivanovna Belykh

“…Here we describe the diversity of T4-bacteriophage associated with the bacterial fraction of filtered water samples collected from the pelagic zone, coastal zone and shallow bays. Although the study of the diversity of phages for the g23 gene has been carried out at Lake Baikal for more than ten years, shallow bays that comprise a significant part of the lake’s area have been neglected, and this gene has not previously been studied in the bacterial fraction. …”
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Environmental features and dynamics of plankton communities in a mountain glacial moraine lake (Baikal Lake basin, Russia) by Ekaterina Yu. Afonina, Natalya A. Tashlykova, Alexey P. Kuklin, Gazhit Ts. Tsybekmitova

“…As per the CCorA, the factors that contribute to the abundance and biomass of Bacillariophyta, Chlorophyta, Chrysophyta, Dinophyta, Rotifera, Cladocera, and Copepoda have been observed in the following descending order: depth, phosphorus content, water temperature, and pH in littoral zone; pH, color, turbidity, nitrogen content determine density of Bacillariophyta, Chlorophyta and Copepoda in the pelagic zone. The abundance of alga Crucigeniella irregularis and rotifers Kellicottia longispina and Conochilus unicornis were positively related to the phosphate content in the shallow areas. …”
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Ciliate and mesozooplankton community response to increasing CO₂ levels in the Baltic Sea: insights from a large-scale mesocosm experiment by S. Lischka, L. T. Bach, K.-G. Schulz, U. Riebesell

“…Thus, under increasing OA in cladoceran-dominated mesozooplankton communities, the importance of the microbial loop in the pelagic zone may be temporarily enhanced and carbon transfer to higher trophic levels may be stimulated.…”
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Fish Communities of Five Drinking Water Reservoirs in the Morava River Basin by Pavel Jurajda, Michal Janáč, Kevin Roche, Libor Mikl, Luděk Šlapanský, Ivo Krechler, Zdeněk Adámek, Zdenka Jurajdová, Karel Halačka

“…Fish were sampled using boat electrofishing along the littoral zone and Nordic gill nets in the pelagic zone. Both methods were evaluated separately and combined as CPUE and relative abundance and biomass ( %). …”
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Long-Term Monitoring of Dolphin Biosonar Activity in Deep Pelagic Waters of the Mediterranean Sea by Francesco Caruso, Giuseppe Alonge, Giorgio Bellia, Emilio De Domenico, Rosario Grammauta, Giuseppina Larosa, Salvatore Mazzola, Giorgio Riccobene, Gianni Pavan, Elena Papale, Carmelo Pellegrino, Sara Pulvirenti, Virginia Sciacca, Francesco Simeone, Fabrizio Speziale, Salvatore Viola, Giuseppa Buscaino

“…The Ocean noise Detection Experiment collected data offshore the Gulf of Catania from January 2005 to November 2006, allowing the study of temporal patterns of dolphin activity in this deep pelagic zone for the first time. Nearly 5,500 five-minute recordings acquired over two years were examined using spectrogram analysis and through development and testing of an automatic detection algorithm. …”
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Composition and Ecological Roles of the Core Microbiome along the Abyssal-Hadal Transition Zone Sediments of the Mariana Trench by Hongmei Jing, Xiang Xiao, Yue Zhang, Zhiyong Li, Huahua Jian, Yingfeng Luo, Zhuang Han

“…It is also well known that heterotrophs and chemoautotrophs dominate the hadal and abyssal pelagic zones, respectively. Here, a metagenomic investigation was conducted on sediment samples obtained from the abyssal-hadal transition zone in the Mariana Trench to gain a better understanding of the general diversity and potential function of the core microbiome in this zone. …”
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Fixed-Nitrogen Loss Associated with Sinking Zooplankton Carcasses in a Coastal Oxygen Minimum Zone (Golfo Dulce, Costa Rica) by Peter Stief, Ann Sofie B. Lundgaard, Álvaro Morales-Ramírez, Bo Thamdrup, Ronnie N. Glud, Ronnie N. Glud, Ronnie N. Glud

“…Here, we investigate the complex N-cycling associated with sinking zooplankton carcasses exposed to the steep O2 gradient in a coastal OMZ (Golfo Dulce, Costa Rica). 15N-stable-isotope enrichment experiments revealed that the carcasses of abundant copepods and ostracods provide anoxic microbial hotspots in the pelagic zone by hosting intense anaerobic N-cycle activities even in the presence of ambient O2. …”
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Potential causes for the stranding of Macrohectopus branickii (Dybowsky, 1874) specimens along the Angara River: strong currents, artificial lighting, or ice melting by Maria A. Maslennikova, Arina V. Lavnikova, Yana K. Ermolaeva, Natalya A. Kulbachnaya, Sofya A. Biritskaya, Anastasia I. Okholina, Lidia B. Bukhaeva, Dmitry I. Golubets, Iya V. Milovidova, Еugene A. Silow, Dmitry Yu. Karnaukhov

“…The habitat of this amphipod is limited to the pelagic zone of Lake Baikal (with periodic nocturnal migrations to the littoral part of the lake). …”
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