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Keywords: upravljanje z vodami, biološki elementi kakovosti, stanje, morje, predpisi
Published in DiRROS: 10.07.2026; Views: 178; Downloads: 0
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Abstract: The European Commission's Joint Research Centre (JRC) hosted a workshop on marine NonIndigenous Species (NIS) within the framework of the Marine Strategy Framework Directive (MSFD). The workshop, which took place from 10 to 12 February 2026, gathered experts from Member States and representatives of marine Regional Sea Conventions to discuss progress on monitoring, measures, and targets related to NIS. Experts acknowledged that progress has been made, but that challenges still exist in calculating monitoring efforts, setting effective targets, and assessing the impact of NIS on marine biodiversity, highlighting the need for further action to protect Europe's marine ecosystems. Researchers noted that current efforts to monitor the spread of NIS in Europe's seas are insufficient to fully understand the harm they cause, and that more work is needed to develop a shared approach to study their impact on marine ecosystems. A consensus was achieved on the need to assess the effects of NIS, which is a complex task that requires more research and cooperation. To address this challenge, the JRC will continue to work with countries experts to develop new methods and strategies for monitoring and managing NIS, with the ultimate goal of protecting Europe's marine biodiversity.
Keywords: Marine Strategy Framework Directive, Descriptor 2, invasive species, workshop, monitoring
Published in DiRROS: 10.07.2026; Views: 209; Downloads: 0

Keywords: monitoring morja, biološki elementi kakovosti, ekološko stanje
Published in DiRROS: 09.07.2026; Views: 235; Downloads: 79
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Abstract: The spread of aquatic non-indigenous species (NIS) is recognised as a major threat to the recipient regions ecosystems. The present study reviewed all NIS that have been introduced to the marine waters of the European Union (EU) until 2021, and their introduction pathways. Further, the study statistically analysed temporal trends in new NIS introductions and addressed uncertainties in relation to transporting pathways. Time-series analyses indicated that the observed trends in new NIS introductions have followed smoothly increasing trajectories for the entire study area, Mediterranean Sea, North-East Atlantic Ocean, and the Baltic Sea, whereas abrupt increase was detected for the Black Sea. It is noteworthy that the increasing trends started to slow down at the end of 2010s. Strongly increased research interest towards marine invasions since the early 2000s, and new environmental policies likely affected the observed trends. Future updates will be key to assessing whether this slowdown is truly a persisting trend or only an anomaly in the long term. The pathway assessment suffered from notable uncertainties, as the assigned confidence levels for pathways were low or unassigned for a large proportion of the introduced NIS in all study regions. Transport by shipping vectors was assigned as the most common pathway (51%) for new NIS introductions to EU seas, although there was very rarely direct evidence of this. The study highlights the need to overcome the pathway uncertainties, as robust information on introduction pathways is critical to manage new NIS introductions effectively.
Keywords: invasive alien species, marine bioinvasions, trend analysis, pathways, research interest
Published in DiRROS: 02.03.2026; Views: 405; Downloads: 354
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Abstract: Brown algal forests (Cystoseira sensu lato) are key habitat-forming components of temperate rocky coasts but have experienced widespread decline across the Mediterranean Sea. This study investigates the current distribution and potential future shifts in brown algal forests across the Adriatic Sea under ongoing climate change. We combined non-destructive field-based mapping along the Slovenian coastline with remote-sensing products and spatial environmental predictors to model basin-wide habitat suitability. A multiscale geographically weighted regression (MGWR) framework was applied to account for spatial non-stationarity and to explicitly capture the fact that environmental drivers of habitat suitability operate at different spatial scales—an assumption that global models such as GAM or standard GWR cannot adequately address. Habitat suitability maps were generated for present-day conditions and projected under mid- and late-century climate scenarios. The results reveal pronounced latitudinal gradients, identify areas of ongoing canopy decline in the northern Adriatic, and highlight parts of the southern Adriatic as potential climate refugia. Overall, the study demonstrates a likely north–south contraction of suitable habitat for brown algal forests and underscores the value of multiscale spatial modelling for informing marine spatial planning, conservation prioritization, and climate- adaptive restoration under European policy frameworks.
Keywords: brown algal forests, Cystoseira s.l., habitat suitability, spatial modelling, Adriatic Sea, climate change, shifts
Published in DiRROS: 21.01.2026; Views: 515; Downloads: 422
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