Yazar "Ozalp, H. Baris" seçeneğine göre listele

Listeleniyor 1 - 11 / 11
  • [ X ]
    Öğe
    A pan-Mediterranean extinction?Pinna nobilismass mortality has reached the Turkish straits system
    (Springer Heidelberg, 2020) Ozalp, H. Baris; Kersting, Diego K.
    [Anstract Not Available]
  • [ X ]
    Öğe
    A PRELIMINARY BIODIVERSITY SURVEY IN THREE SHIPWRECKS IN THE DARDANELLES (MARMARA SEA, TURKEY)
    (Parlar Scientific Publications (P S P), 2017) Ozalp, H. Baris; Alparslan, Mustafa; Okudan-Aslan, Emine Sukran; Aysel, Orkun; Aysel, Veysel
    In this study macro aquatic biota inhabiting on three different shipwrecks in the canakkale Strait were investigated during the winter of 2010-2011 and the summer of 2014-2015 (Nov. 2010 -Sep 2015). One of the shipwrecks is strongly dominated by gorgonian corals while others had only a variety of algae and fish; 5 anthozoans, 2 echinoderm, 1 tunicate, 33 fish and 31 macroalgae species were determined. Visual census techniques were used for evaluation of fish assemblages around the sites. Based on faunal characteristics, the shipwrecks could be classified as three different groups.
  • [ X ]
    Öğe
    An invader-economical gastropod Rapana venosa (Valenciennes, 1846) in Canakkale and adjacent regions
    (Ege Univ, Fac Fisheries, 2006) Alparslan, Mustafa; Ozalp, H. Baris; Sagir-Odabasi, Serpil
    An invasive commercial, veined whelk Rapana venosa (Valenciennes, 1846) is first recorded in 1946 around Novorossiysky Bay (Russia), Black Sea. This gastropod has been collecting since 1994 in front of Gelibolu (Canakkale, Turkiye). It is possible that they enter this region from Black Sea where the nearest population survive through both shipping activities and natural dispersion. R. venosa is known as predatory gastropod which kill impotant commercial bivaves such Mytilus galloprovincialis (Lamarck, 1819) and Pecten jacobaeus (Linnaeus, 1758). R. venosa especially, feeds on the mussels beds in this region. They are freely hunted by scubadiving and air supply diving systems all year
  • [ X ]
    Öğe
    Biodiversity of marine caves and cave-like formations around the Northern Aegean islands of Turkey (Gokceada and Bozcaada)
    (Turkish Marine Research Foundation-Tudav, 2019) Ozalp, H. Baris
    [Anstract Not Available]
  • [ X ]
    Öğe
    Determination of some nutritional compositions of roe samples of the edible sea urchin Paracentrotus Lividus (Lamarck, 1816) in the Dardanelles (Marmara Sea)
    (Natl Inst Science Communication-Niscair, 2015) Kizilkaya, Bayram; Ozalp, H. Baris; Turker, Gulen; Alparslan, Mustafa; Tekinay, A. Adem
    In this study, the nutritional composition of gonad samples of Paracentrotus lividus collected from three different stations in the Sea of Marmara (Dardanelles) and the Northern Aegean Sea, Bozcaada Island during the summer season of 2012 was investigated. As a purpose of the research, the effect of total carotenoids and free radical-scavenging activity assay of three different extracts (methanol, acetone and chloroform extracts) have been determined. Total carotenoids were found to range between 131 and 179 mu g/g of sea urchin. The current study shows that the highest inhibition was found as 99.1 (%) in methanolic extract sampled from Tuzburnu (the first station). Macro (Ca, Na, K and Mg) and micro (Cu, Fe, Mn and Zn) mineral composition of urchins was specified by ICP-OES. Results show that sea urchin was found to be rich in total carotenoids, antioxidant capacity, macro and micro minerals.
  • [ X ]
    Öğe
    Distribution and Morphology of the Colonial Scleractinian Madracis pharensis (Cnidaria, Anthozoa) in the Dardanelles (Marmara Sea, Turkey)
    (Inst Zoology, Bas, 2015) Ozalp, H. Baris; Alparslan, Mustafa
    The benthic communities in the Dardanelles were investigated with scuba diving and manta-tow techniques between 2011 and 2013 at 200 stations with a depth between 1 and 50 m. In these studies, the scleractinian Madracis pharensis (Heller, 1868) was collected from coralligenous and rocky habitats at five different sites at depths between 20 and 39 m. The ecological features of the colonies were examined in situ. The present paper reports the species occurrence and reveals the habitat characteristics of the species for the first time from this area. With this new record the known global distributional range of the species has been updated and the knowledge on anthozoan ecology along the Turkish coasts was enhanced.
  • [ X ]
    Öğe
    Marine invertebrate fauna (Porifera, Anthozoa) and biodiversity status on the historically important wreck sites of HMS Majestic and Helles Barges (Northern Aegean coast of Turkiye)
    (Turkish Marine Research Foundation-Tudav, 2023) Evcen, Alper; Ozalp, H. Baris
    In this study, the sponge and Anthozoa fauna on the shipwreck sites (Majestic, Helles Barges), was studied. A total of 24 sponge species and 5 anthozoan were identified, 1 of which Pseudosuberites sulphureus is reported for the first time from the North Aegean coasts of Turkiye.
  • [ X ]
    Öğe
    New records of anthozoan species (Cnidaria, Octocorallia, Hexacorallia) for the Turkish Straits System
    (Walter De Gruyter Gmbh, 2015) Ozalp, H. Baris; Ates, A. Suat
    This study includes new records of soft corals found in the Turkish Straits System (Dardanelles) between 2013-2014. In the above-mentioned area, 50 stations were searched by scientific divers from the intertidal zone to a depth of over 45 m and the ecological characteristics with substrate differences were also recorded. A total of 47 cnidarians were examined during the surveys. Eleven anthozoan species (Aiptasia mutabilis, Alcyonium acaule, Andresia parthenopea, Calliactis parasitica, Cereus pedunculatus, Condylactis aurantiaca, Epizoanthus couchii, Maasella edwardsi, Pteroeides spinosum, Sarcodictyon roseum, Veretillum cynomorium) belonging to 4 orders are new to the Dardanelles strait, one of which is reported from the Marmara Sea. The current data contributed to the advancement of the knowledge about anthozoan species in the Turkish Seas.
  • [ X ]
    Öğe
    Physicochemical Characterization of Biomineralized Structures of Sea Pen Pteroeides spinosum (Ellis & Solander, 1786) (Octocorallia: Pennatulidae)
    (Springer Int Publ Ag, 2025) Erdogan, Sevil; Ozalp, H. Baris; Tasdelen, Betul
    In this study, biomineralized polyp leaf spicules and the endoskeletal axis of the coral Pteroeides spinosum were physicochemically characterized by FTIR, SEM, EDX, TGA, XRD, ICP-MS, and ICP-OES analyses. The mineralized inner axis and polyp leaf spicules of P. spinosum were also pulverized and incorporated into the polyacrylamide (PAAm) hydrogel structure. In vitro bioactivity of coral polyp leaf spicules was evaluated by using simulated body fluid. Characterization analyses identified the major crystalline phase of coral polyp leaves spicules and the inner axis as calcite. The coral's inner axis exhibits a notched and perforated surface morphology. Calcite sclerites obtained from polyp leaves exhibit a crystalline structure and smooth surface morphology. TGA results revealed the organic matter in the coral individual is higher than that of the polyp leaf spicules. It resulted the coral's inner axis was compatible with the PAAm hydrogel. Coral polyp leaf spicules did not form apatite on their surface in simulated body fluid. The calcite content of the coral P. spinosum can be evaluated as an inert additive to improve mechanical properties and thermal stability in hydrogels.
  • [ X ]
    Öğe
    Pre-assessment of zoobenthos diversity from the only hard coral Marine Reserve in the Turkish Seas (Canakkale Strait, Turkey)
    (Elsevier, 2022) Ozalp, H. Baris; Demir, Volkan; Evcen, Alper; Onen-Tarantini, Senem; Montesanto, Federica; Erdogan, Sevil; Culha, Mehmet
    Marine Protected Areas (MPAs) and their management have become more significant than ever due to the growing impacts of pollution, overfishing and illegal hunting activities in marine environments. Corals, as habitat forming species that create biodiversity hotspots, provide structural support, shelter and a nursery ground for associated biota. The present paper deals with the pre-assessment of invertebrate assemblages living in hard coral (Cladocora caespitosa) reef in the marine protected area (Dardanos Cladocora Reefs) of the Canakkale Strait. In the study (DarINVERTA7) conducted between 2017 and 2021, 62 benthic invertebrate species, belonging to eight taxonomic groups were reported for the first time from the region of which five species (Clathria (Clathria) compressa, Rynchozoon neapolitanum, Hornera frondiculata, Polycitor adriaticus and Aplidium nordmanni) were new for the Turkish coasts.(c) 2022 Elsevier B.V. All rights reserved.
  • [ X ]
    Öğe
    Scleractinian diversity in the Dardanelles and Marmara Sea (Turkey): morphology, ecology and distributional patterns
    (Walter De Gruyter Gmbh, 2016) Ozalp, H. Baris; Alparslan, Mustafa
    Although marine research on anthozoans began at the end of the 1800s with some reports on the occurrence in Turkey, comprehensive knowledge about their biotic features remains limited. This study is the first detailed diversity assessment of scleractinian corals inhabiting the Turkish waters. The surveys conducted on rocky habitats between 2011 and 2014 around the Dardanelles and Marmara Sea provided the distributional data of nine corals, five of which (Caryophyllia inornata, Paracyathus pulchellus, Polycyathus muellerae, Phyllangia mouchezii, Leptopsammia pruvoti) were recorded for the first time from the above mentioned regions. During the surveys carried out at 200 stations down to 50 m depth, a total of 1072 scuba dives were made and the ecological features of habitats, physical characteristics of coral species and an updated list of corals as a contribution to the scleractinian fauna of Turkey were provided. The abundance rate of Polycyathus muellerae and Cladocora caespitosa in Eceabat and Dardanos regions was higher than at the other stations.