Publisher: Zgodovinsko društvo za južno Primorsko, Znanstveno raziskovalno središče Republike Slovenije, Societá storica del Litorale, Centro di ricerche scientifiche della Repubblica di Slovenia, Science and Research Centre of the Republic of Slovenia
The paper deals with four opisthobranch molluscs, which were found in the Slovenian marine waters as new records. The pleurobranchomorph Pleurobranchea meckeli was found on two occasions on muddy detritic bottom in the Gulf of Piran in June of 2013 and 2014. The nudibranch Favorinus branchialis was found in May and June 2014 on turf vegetation in a very shallow area off the pier in Koper harbour. Its spawn with white eggs was also found nearby. The second nudibranch Facelina rubrovittata was found in March 2010 crawling in the intertidal zone of the Nature reserve Strunjan. The third nudibranch Dondice banyulensis was found in waters of the Nature Monument Debeli rtic on sedimentary bottom. With the fi nding of these four species, the total number of opisthobranchs recorded to date in the Slovenian part of the Adriatic Sea increased to 75 species. Prispevek obravnava podatke o štirih vrstah polžev zaškrgarjev (Opisthobranchia), ki so bili najdeni v slovenskem delu Jadranskega morja. V letih 2013 in 2014 smo našli nekaj primerkov vrste Pleurobranchea meckelii. Gološkrgarja vrste Favorinus branchialis smo našli na nizki blazinasti vegetaciji v plitvem morju ob koprskemu pomolu v maju in juniju 2014. V bližini je bil tudi njegov mrest. O tej vrsti so znani zapisi iz okolice Rovinja in Ravene. Drugega gološkrgarja vrste Facelina rubrovittata smo našli v Mesecevemu zalivu v naravnem rezervatu Strunjan marca 2010. Ta vrsta je bila doslej znana predvsem iz zahodnega dela Sredozemskega morja, v Jadranskem morju pa je znan le zapis z zahodne obale južnega Jadrana iz leta 2006. Tretjega gološkrgarja Dondice banyulensis smo odkrili na dnu naravnega spomenika Debeli rtic, kjer se je plazil po perjanici cevkastega mnogošcetinca Spirographis spallanzani. Z novimi najdbami se je število v slovenskem morju ugotovljenih vrst polžev zaškrgarjev povecalo na 75. Te najdbe potrjujejo hipotezo, da je vrstna pestrost slovenskega dela Jadranskega morja izjemno velika, hkrati pa se bo seznam novoodkritih polžev zaškrgarjev v prihodnosti nedvomno še dopolnjeval z novimi zapisi.
Publisher: William Byrd Press for John Hopkins Press
A vinter oceanographic field experiment provided an opportunity to examine theatmospheric marine conditions over the northern Adriatic. Mean February winds are from a northeasterly direction over most of the Adriatic and a more northerly direction along the western coast...
Microplastics in aquatic ecosystems and especially in the marine environment represent a pollution of increasing scientific and societal concern, thus, meanwhile a substantial number of studies on microplastics exist. Although first steps towards a standardisation of methodologies used for the detection and identification of microplastics in environmental samples are made, the comparability of data on microplastics is currently hampered by a huge variety of different methodologies which result in the generation of data of extremely different quality and resolution. This chapter reviews the methodology presently used for assessing the concentration of microplastics in the marine environment with focus on the most convenient techniques and approaches. After an overview of non-selective sampling approaches, sample processing and treatment in the laboratory, the reader is introduced to the currently applied techniques for the identification and quantification of microplastics. The subsequent case study on microplastics in sediment samples from the North Sea measured with focal plane array (FPA)-based micro-Fourier transform infrared (micro-FTIR) spectroscopy shows that only 1.4 % of the particles visually resembling microplastics were of synthetic polymer origin. This finding emphasizes the importance of verifying the synthetic polymer origin of potential microplastics. Thus, a burning issue concerning current microplastic research is the generation of standards that allow for the assessment of reliable data on concentrations of microscopic plastic particles and the involved polymers with analytical laboratory techniques such as micro-FTIR or micro-Raman spectroscopy.