20.500.12556/DiRROS-19998 Meiofauna winners and losers of coastal hypoxia: case study harpacticoid copepods The impact of anoxia on meiobenthic copepod species was assessed by means of a field experiment. Four plexiglass chambers were deployed in situ in 24 m depth to simulate an anoxic event of 9 days, 1 month, 2 months and 10 months. From normoxic to anoxic conditions, we recorded a drop in copepod density and species richness. With increasing duration of anoxia the relative abundance of the individuals of the family Cletodidae increased, and they survived the 1 month and 2 month anoxia, the latter with few specimens. They were the true "winners" of the experimentally induced anoxia. Dominance did not increase in the deployments because not one, but several species from this family were tolerant to anoxia. The overall rate of survival was the same for males and females, but no juvenile stages of copepods survived in anoxia. During a recovery phase of 7 days after a short-term anoxia of 9 days, harpacticoid copepod density did not increase significantly, and there was only a slight increase in species diversity. We concluded that no substantial colonisation from the surrounding sediment took place. The survivors, however, showed a high potential for recovery according to the number of gravid females, whose number increased significantly once the oxygen was available again. These findings imply that substantial energy is allocated to reproduction in the recovery phase. morje plankton kopepodi živalski plankton trofični status morski plankton harpaktikoidi bentoške komore anoksija true false true Angleški jezik Slovenski jezik Tržaški zaliv; Neznano 2024-08-01 15:53:50 2024-08-01 15:53:51 2024-08-02 03:50:44 0000-00-00 00:00:00 2014 0 0 Izv. znanstv. članek; Predčasna objava DOI v BGD januarja 2014; str. 281-292 no. 2 Vol. 11 2014 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2014-01-22 574 1726-4170 10.5194/bg-11-281-2014 3034703 RAZ_Grego_Mateja_2014.pdf RAZ_Grego_Mateja_2014.pdf 1 DEBCE3CA15F1B222D20B2B88ABCD4AF2 e3d7c2ffd38859d42f40f03330d51c8c9a2be7bfb8dab53d5ef300f5887c6ac1 1386ddfb-4ffd-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=27799 http://dx.doi.org/10.5194/bg-11-281-2014 0 2378c074-4ffd-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=27800 Nacionalni inštitut za biologijo 0 0 0