Iskanje po repozitoriju

A+ | A- | | SLO | ENG

Ključne besede: Občina Piran, protipoplavna zaščita, kartiranje, habitatni tipi, biološke združbe
Objavljeno v DiRROS: 08.09.2025; Ogledov: 349; Prenosov: 118
Celotno besedilo (6,30 MB)

Povzetek: This Collective Article presents information on 20 taxa belonging to five (5) Phyla: Cnidaria (2), Mollusca (8), Arthropoda (4), Echinodermata (1) and Chordata (5) recorded from the Alboran Sea to the Levantine Sea. These new records were found in seven (7) different ecoregions as follows: Alboran Sea: new record of the rare football octopus Ocythoe tuberculata in the harbour of Algeciras (Spain); Western Mediterranean Sea: first record of the isopod Arcturinella deltensis in the Ligurian Sea, and the third in the whole Mediterranean Sea; third Mediterranean site for the Muricidae Coralliophila ahuiri along the Italian coasts (Alghero); first and westernmost record of the goby Corcyrogobius liechtensteini from the Iberian Peninsula; new record of the sea slug Glaucus atlanticus from the coast of the Iberian Peninsula; first and easternmost record of Holothuria (Vaneyothuria) lentiginosa lentiginosa along the Italian coasts; Tunisian Plateau/Gulf of Sidra: seventh record of the oceanic squid Thysanoteuthis rhombus in Tunisia, and first for the Gulf of Gabes. Ionian Sea: second occurrence of the Atlantic tripletail Lobotes surinamensis in the Ionian Sea and first record from the Strait of Messina area; new record of the rare sea elephant Pterotrachea coronata from the Strait of Messina; Adriatic Sea: first record of a facies of football ascidian Diazona violacea in the South Adriatic Sea (Tremiti Island, Italy); two records of the sevengill shark Heptranchias perlo in Croatian waters after more than 70 years of absence of documented records in this area; first known occurrence of the nudibranch Jalonus hyalinus in Slovenian waters and also the first known occurrence of this species in the Adriatic Sea; first record of the nudibranch Okenia elegans in Slovenian waters; Aegean Sea: First record of the parasitic isopod Nerocila milesensis along Greek coasts (Crete island) as well as the second record worldwide; additional record of the brachyuran Paragalene longicrura collected from the Saronikos Gulf (Greece); first record of the siphonophore Rhizophysa filiformis in Greek waters as well as the second record of this species in the eastern Mediterranean basin; new record of the rare and protected angelshark Squatina aculeata along Turkish coasts; Levantine Sea: first record of the marine amphipod Caprella andreae in the Levantine Mediterranean shore of Israel, based on both morphological and molecular data; first occurrence of the cephalopod Tremoctopus violaceus along Turkish coasts, which confirms its presence in the north-eastern coasts of Turkey; record of a bloom of the thermophilic jellyfish Pelagia noctiluca in the north Levantine Sea.
Objavljeno v DiRROS: 19.03.2025; Ogledov: 865; Prenosov: 408
Celotno besedilo (4,22 MB)
Gradivo ima več datotek! Več...

Povzetek: V skladu s projektno nalogo »Nadgradnja poznavanja biotskih in abiotskih značilnosti ter obsega bentoških habitatnih tipov cirkalitoralni grobi sedimenti (MC3), cirkalitoralni premešani sedimenti (MC4) in cirkalitoralni peski (MC5).« (Pogodba št. 2330-20-670002) smo pripravili končno poročilo o opravljem delu, ki naslavlja 4 glavne vsebinske sklope: a) opis metodologije, b) izris širšega habitatnega tipa MC 5 (cirkalitoralni peski) in ocena njegove površine, c) struktura epibentoške združbe na obravnavanem območju, in d) predlog monitoringa za potrebe ocene stanja tega habitatnega tipa, tako z vidika razširjenosti kot tudi stanja habitatnega tipa. Poročilo bazira na podatkih pridobljenih tekom projekta in na prejšnjih vmesnih poročilih (Mavrič in sod. 2021, 2022 in 2023)
Ključne besede: habitatni tipi, cirkalitoral, epibentoška združba, monitoring, poročila, elektronske knjige
Objavljeno v DiRROS: 02.09.2024; Ogledov: 954; Prenosov: 1506
Celotno besedilo (4,09 MB)
Gradivo ima več datotek! Več...

Povzetek: Seagrass beds are more or less the marine counterpart of tropical rainforests, and their health is related to different anthropogenic stressors, including navigation routes and port activities. In the Mediterranean Sea, Cymodocea nodosa is considered an effective indicator of environmental change, due to its universal distribution, sensitivity to various natural and anthropogenic pressures, and the measurability of the species’ responses to impacts. The aim of this study is to present the changes in the assessment of the ecological status of the C. nodosa meadow near the port of Koper, which was evaluated as Bad in 2018. The results show a significant improvement in the ecological status of the meadow, which can be attributed to a reduction in anthropogenic stressors.
Objavljeno v DiRROS: 01.08.2024; Ogledov: 987; Prenosov: 714
Celotno besedilo (1,65 MB)
Gradivo ima več datotek! Več...

Povzetek: Brown algae from genus Cystoseira s.l. form dense underwater forests that represent the most productive areas in the Mediterranean Sea. Due to the combined effects of global and local stressors such as climate change, urbanization, and herbivore outbreaks, there has been a severe decline in brown algal forests in the Mediterranean Sea. Natural recovery of depleted sites is unlikely due to the low dispersal capacity of these species, and efficient techniques to restore such habitats are needed. In this context, the aims of our study were (1) to improve and simplify the current ex situ laboratory protocol for the cultivation of Gongolaria barbata by testing the feasibility of some cost-effective and time-efficient techniques on two donor sites of G. barbata and (2) to evaluate the survival and growth of young thalli during the laboratory phase and during the most critical five months after out-planting. Specifically, the following ex situ cultivation methods were tested: (A) cultivation on clay tiles in mesocosms with culture water prepared by three different procedures (a) filtered seawater with a 0.22 μm filter membrane, (b) filtered seawater with a 0.7 μm filter membrane (GF), and (c) UV-sterilized water, and (B) cultivation on clay tiles in open laboratory systems. After two weeks, all thalli were fixed to plastic lantern net baskets suspended at a depth of 2 m in the coastal sea (hybrid method), and the algal success was monitored in relation to the different donor sites and cultivation protocol. The satisfactory results of this study indicate that UV-sterilized water is suitable for the cultivation of G. barbata in mesocosm, which significantly reduces the cost of the laboratory phase. This opens the possibility of numerous and frequent algal cultures during the reproductive period of the species. Additionally, if the young thalli remain in the lantern net baskets for an extended period of several months, they can grow significantly in the marine environment without being exposed to pressure from herbivorous fish.
Ključne besede: gojenje ex situ, obnova habitata, izboljšanje metodologije, gozdički rjavih alg, ex situ cultivation, mesocosm, open system, method improvement, brown algal forests restoration
Objavljeno v DiRROS: 29.03.2024; Ogledov: 1542; Prenosov: 906
Celotno besedilo (2,52 MB)
Gradivo ima več datotek! Več...