scholarly journals Assessment of Marine Litter in the Coralligenous Habitat of a Marine Protected Area along the Ionian Coast of Sicily (Central Mediterranean)

2020 ◽  
Vol 8 (9) ◽  
pp. 656
Author(s):  
Luca Giuseppe Costanzo ◽  
Giuliana Marletta ◽  
Giuseppina Alongi

In the Mediterranean Sea, the coralligenous is an extremely important habitat for its biodiversity and role in carbon sequestration. However, coralligenous biocenosis is sensitive to many anthropogenic impacts, among which one of the major threats is the marine litter. The aim of the present work was to evaluate the marine litter present in the coralligenous habitat of the Marine Protected Area (MPA) Isole Ciclopi (Sicily, Italy). Through the analysis of frames obtained by Remotely Operated Vehicles (ROV) videos, data on the type of marine litter, grade of organisms’ coverage, litter-organism interactions, and seabed coverage of items were gained. Through ROV surveys, a low number of marine litter items was observed and most of them were fishing gears. On the found items there was a high degree of organisms’ coverage, which suggests that probably the marine litter was abandoned or lost since a long time. Overall, it was observed that in recent years the fishing activity in the MPA has not affected the coralligenous habitat. The present study represents a baseline for future monitoring programmes, which will be useful to develop protection measures and sustainable fishing, in order to preserve the coralligenous habitat of the MPA.

2017 ◽  
Vol 3 (2) ◽  
pp. 115
Author(s):  
Andri Warsa ◽  
Baiq Ida Purnawati

Kawasan Kepulauan Seribu merupakan bagian dari wilayah Daerah Khusus Ibukota Jakarta, terletak pada posisi geografis antara 106°25’-106°40’ BT dan 05°24’-05°45’ LS. Daerah perlindungan laut adalah daerah yang ditutup secara permanen di mana semua kegiatan penangkapan ikan dan kegiatan lain dilarang. Tujuan penelitian ini untuk mengetahui kondisi lingkungan di daerah tersebut pada bulan April dan Juli 2007. Pengamatan kondisi ekosistem terumbu karang dilakukan dengan metode transek garis (line intercept transect) sepanjang 50 m sejajar garis pantai dan pengamatan kondisi oseanografi lima stasiun pengamatan. Hasil penelitian menunjukan kondisi oseanografi di daerah perlindungan laut Pulau Pramuka layak untuk kehidupan biota laut dengan konsentrasi oksigenterlarut berkisar antara 2,55-4,19 mg/L, salinitas berkisar antara 32-32,5o/oo, kecerahan berkisar antara 2-10 m, dan derajat keasaman (pH) berkisar antara 7,85-7,99. Kondisi kesehatan karang adalah sedang dan baik dengan persentase tutupan karang berkisar antara 30-75%. Seribu Islands region located at 106°25’-106°40’ E and 05°24’-05°45’ S which is a part of Jakarta Province. Marine protected area is a closed site permanently where extractive activity is prohibited, mainly fishing activity and the aim of this program is to conserve coastal resource. The aim of this research was to know environmental condition of Pramuka Island marine protected area at Seribu Islands. The research was done at marine protected area of Pramuka Island in April and July 2007. Monitoring of coral reef ecosystem was done with line intercept transect method along 50 m parallel with shore line and oceanography condition at 5 stations. The result of this research shown that oceanography condition at marine protected area of Pramuka Island was suitable for marine biota life with dissolved oxygen between 2.55-4.19 mg/L, salinity between 32-32.5o/oo, transparency between 2- 10 m, and pH between 7.5-7.99. Coral reef healthy condition is medium and good with percent covered between 30-75%.


Crustaceana ◽  
2019 ◽  
Vol 92 (4) ◽  
pp. 463-476
Author(s):  
Vincenzo M. Giacalone ◽  
Arturo Zenone ◽  
Fabio Badalamenti ◽  
Javier Ciancio ◽  
Gaspare Buffa ◽  
...  

Abstract A specific study has been carried out for the first time to investigate the homing capability and daily home range of the spiny lobster Palinurus elephas by means of ultrasonic telemetry. Nine lobsters collected in the Capo Gallo — Isola delle Femmine marine protected area (northwestern Sicily, central Mediterranean) were tagged with miniaturized transmitters and released at a single site inside the protected area. The lobsters were monitored with the purpose of calculating their horizontal and vertical positions, analysing their movement patterns to assess their homing capability, and calculating their daily home range. Five lobsters moved back close to the capture sites within the first 20 hours after release (‘homed’). The remaining four lobsters ‘relocated’ to a different refuge. Homed lobsters had a larger home range than relocated lobsters. This study provides the first description of a homing pattern with high spatial resolution in the wild European spiny lobster as inferred by ultrasonic telemetry.


2017 ◽  
Vol 18 (1) ◽  
pp. 11 ◽  
Author(s):  
G. LA MESA ◽  
E. SALVATI ◽  
S. AGNESI ◽  
L. TUNESI

The fish assemblages of the coastal area of the promontory of Cape Milazzo (Italy, Central Mediterranean), which has been recently designated by the Italian Law to become a national marine protected area (MPA), were characterized by visual censuses carried out over different habitats (rocky algal reef, Posidonia oceanica meadow and soft bottom) and depth ranges (0-3, 4-7, 12-16 and 24-30 m) to identify areas of major concern for the MPA zoning. The study area was divided into 6 sectors to assess spatial-related differences in the assemblage parameters, such as species composition and richness, and the size structure of species of recreational (e.g. SCUBA diving) interest. Fifty-eight taxa (56 species and 2 genera) and 20 families of fishes were totally recorded. Species composition was significantly affected by habitat and depth, whereas no significant changes were detected among sectors. Conversely, species richness and total density of fish showed no significant differences among sectors, habitat types and depth ranges. The majority of species of recreational value was recorded only off the northwestern part of the promontory. The implementation of fishing ban in such an area, characterized by the presence of a rocky bank, would contribute to the recovery of populations of some emblematic species (e.g. groupers and other large predator) and to the enhancement of environmentally sustainable activities such as scuba diving. Throughout the investigated area and, especially, in the eastern and southwestern coasts of the promontory, several species were almost exclusively represented by small and medium sized individuals, a likely consequence of an intense fishing pressure.


2021 ◽  
Author(s):  
Alejandro Frid ◽  
Madeleine McGreer ◽  
Cherisse Du Preez ◽  
Tristan Blaine ◽  
Tammy Norgard

Abstract Biological hotspots are places with outstanding biodiversity features, and their delineation is essential to the design of marine protected area networks (MPANs). For the Central Coast of Canada’s Northern Shelf Bioregion, where a MPAN is being developed, we identified hotspots for structural corals and large-bodied sponges, which are foundation species vulnerable to bottom contact fisheries, and for Sebastidae, a fish family that includes long-lived (> 100 years) and overexploited species with high trophic positions. Using 10 years of survey data that spanned from inland fjords to oceanic waters, we derived hotspot indices that accounted for species characteristics and abundances, and examined hotspot distributions across depths and oceanographic subregions. The results highlighted previously undocumented hotspot locations for each species group, thereby informing the placement of MPAs for which high levels of protection are warranted. Given the vulnerability of the species groups that we examined to cumulative fishery impacts, prospective MPAs derived from our data should be considered for interim protection measures during the protracted period between final network design and the enactment of MPA legislations. These recommendations reflect our scientific data, which are only one way of understanding the seascape. Our extensive surveys did not cover many locations known to Indigenous peoples as biologically important. Consequently, it is paramount that Indigenous knowledge also contributes substantially to the design of the MPAN.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Giovanni Chimienti ◽  
Diana De Padova ◽  
Maria Adamo ◽  
Michele Mossa ◽  
Antonella Bottalico ◽  
...  

AbstractThe effects of global warming have been addressed on coral reefs in tropical areas, while it is still unclear how coral forests are reacting, particularly at temperate latitudes. Here we show how mesophotic coral forests are affected by global warming in the Mediterranean Sea. We highlight how the current warming trend is causing the lowering of the thermocline and it is enhancing mucilaginous blooms. These stressors are facilitating a massive macroalgal epibiosis on living corals, here reported for the first time from different areas in the Western and Central Mediterranean Sea. We provide a focus of this phenomenon at Tremiti Islands Marine Protected Area (Adriatic Sea), were the density of the endemic red gorgonian Paramuricea clavata decreased of up to 47% in 5 years, while up to the 96% of the living corals showed signs of stress and macroalgal epibiosis. Only populations deeper than 60 m depth were not touched by this emerging phenomenon. Spot observations performed at Tuscan Archipelago and Tavolara Marine Protected Area (Tyrrhenian Sea) suggest that this this combination of stressors is likely widespread at basin scale.


2015 ◽  
Author(s):  
Francesca Frau ◽  
Maria-Francesca Cinti ◽  
Valeria Masala ◽  
Stefano Acunto

The marine Site of Community Importance (SCI ITB040020) of the network Natura 2000 is included almost entirely within the perimeter of the Marine Protected Area Capo Carbonara (South East Sardinia, Italy) which is characterized by a high biodiversity, with 720 species and 30 marine habitats reported. Hence, it is recognised as a Specially Protected Area of Mediterranean Importance (SPAMI). During the summer the area is affected by anthropogenic impacts due to recreational activities (e.g. fishing, pleasure boating, swimming, diving) that represents potential threats to some species and protected habitats. This study is part of the project LIFE+ RES MARIS (LIFE13 NAT / IT / 000 433), addressed to the restoration and conservation of marine and terrestrial ecosystems included in the SCI under Habitats Directive 92/43/EEC. The aims is to evaluate the conservation status of the priority habitat 1120 “Posidonia beds” through mapping and characterization of the Posidonia oceanica meadow in areas that previous studies have identified as the most affected by anchoring, for a total surface of about 400 ha. Acoustic methods (Side Scan Sonar), direct visual surveys in SCUBA diving and underwater towed camera are applied. Assessments of coverage of P. oceanica, types of substrate, continuity of the meadow, presence of dead matte, Cymodocea nodosa and benthic alien species (e.g. Caulerpa cylindracea) are reported. Results are crucial for enhancing the knowledge of the current distribution and status of the priority habitat 1120 and is basic for planning further concrete conservation and monitoring measures.


2015 ◽  
Author(s):  
Francesca Frau ◽  
Maria-Francesca Cinti ◽  
Valeria Masala ◽  
Stefano Acunto

The marine Site of Community Importance (SCI ITB040020) of the network Natura 2000 is included almost entirely within the perimeter of the Marine Protected Area Capo Carbonara (South East Sardinia, Italy) which is characterized by a high biodiversity, with 720 species and 30 marine habitats reported. Hence, it is recognised as a Specially Protected Area of Mediterranean Importance (SPAMI). During the summer the area is affected by anthropogenic impacts due to recreational activities (e.g. fishing, pleasure boating, swimming, diving) that represents potential threats to some species and protected habitats. This study is part of the project LIFE+ RES MARIS (LIFE13 NAT / IT / 000 433), addressed to the restoration and conservation of marine and terrestrial ecosystems included in the SCI under Habitats Directive 92/43/EEC. The aims is to evaluate the conservation status of the priority habitat 1120 “Posidonia beds” through mapping and characterization of the Posidonia oceanica meadow in areas that previous studies have identified as the most affected by anchoring, for a total surface of about 400 ha. Acoustic methods (Side Scan Sonar), direct visual surveys in SCUBA diving and underwater towed camera are applied. Assessments of coverage of P. oceanica, types of substrate, continuity of the meadow, presence of dead matte, Cymodocea nodosa and benthic alien species (e.g. Caulerpa cylindracea) are reported. Results are crucial for enhancing the knowledge of the current distribution and status of the priority habitat 1120 and is basic for planning further concrete conservation and monitoring measures.


2014 ◽  
Vol 506 ◽  
pp. 175-192 ◽  
Author(s):  
N Sturaro ◽  
G Lepoint ◽  
A Pérez-Perera ◽  
S Vermeulen ◽  
P Panzalis ◽  
...  

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