1. Pelagic habitats under MSFD D1 : scientific advice of policy relevanceChiara Magliozzi, Jean Noel Druon, Andreas Palialexis, Laura Aguzzi, Konstantinos Antoniadis, Luis Felipe Artigas, Arianna Azzellino, Elena Bisinicu, Laura Boicenco, Natalia Bojanić, Patrizia Borrello, Simona Boschetti, Vanda Carmo, Sanda Skejić, Olja Vidjak, Janja Francé, Živana Ninčević Gladan, 2021, elaborat, predštudija, študija Povzetek: The pelagic habitat is the largest biome on Earth, key for temperature regulation, oxygen, and food production. Its physical and biological components and processes vary spatially and temporally depending on multiple drivers. Understanding this variability, processes and interactions is fundamental to identify the drivers of changes and properly assess pelagic habitats under the Marine Strategy Framework Directive (MSFD). A JRC workshop was organised to align scientific and policy expectations for an improved MSFD pelagic habitat assessment. The workshop brought together experts from the 17 EU Member States and other organisations (e.g. Regional Sea Conventions) across Europe to share knowledge and methods and provide a coordinated regional input towards a harmonised assessment. This report summarizes the workshop outcomes and the way forward for pelagic Good Environmental Status (GES) determination.
Objavljeno v DiRROS: 03.09.2024; Ogledov: 102; Prenosov: 74
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2. Phytoplankton assemblage over a 14-year period in the Adriatic Sea : patterns and trendsSanda Skejić, Blanka Milić Roje, Frano Matić, Jasna Arapov, Janja Francé, Mia Bužančić, Ana Bakrač, Maja Straka, Živana Ninčević Gladan, 2024, izvirni znanstveni članek Povzetek: Considering the role of phytoplankton in the functioning and health of marine systems, it is important to characterize its responses to a changing environment. The central Adriatic Sea, as a generally oligotrophic area, is a suitable environment to distinguish between regular fluctuations in phytoplankton and those caused by anthropogenic or climatic influences. This study provides a long-term perspective of phytoplankton assemblage in the central eastern Adriatic Sea, with 14 years of continuous time series data collected at two coastal and two offshore stations. The predominant phytoplankton groups were diatoms and phytoflagellates, but their proportion varied depending on the vicinity of the coast, as evidenced also by the distribution of chlorophyll a. In the coastal environment, the phytoplankton biomass was substantially higher, with a higher proportion of microphytoplankton, while small phytoplankton accounted for the majority of biomass in the offshore area. In addition, a decreasing trend in diatom abundance was observed in the coastal waters, while such trend was not so evident in the offshore area. Using a neural gas algorithm, five clusters were defined based on the contribution of the major groups. The observed increase in diversity, especially in dinoflagellates, which outnumber diatom taxa, could be a possible adaptation of dinoflagellates to the increased natural solar radiation in summer and the increased sea surface temperature.
Ključne besede: phytoplankton community, long-term data, diversity, chlorophyll a, neural gas analysis, solar radiation, Adriatic Sea
Objavljeno v DiRROS: 11.07.2024; Ogledov: 202; Prenosov: 189
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