scholarly journals Interactions between fish resources and Cormorants Phalacrocorax carbo in the Grado and Marano lagoon (NE Italy)

Acrocephalus ◽  
2009 ◽  
Vol 30 (140) ◽  
pp. 17-23 ◽  
Author(s):  
Mauro Cosolo ◽  
Paolo Utmar ◽  
Flavio Roppa ◽  
Stefano Sponza
Keyword(s):  
Fish Consumption ◽  
Adriatic Sea ◽  
High Variability ◽  
Fish Farms ◽  
Phalacrocorax Carbo ◽  
Fishing Activity ◽  
Fish Removal ◽  
Fish Resources ◽  
Ne Italy ◽  
Friuli Venezia Giulia

Interactions between fish resources and CormorantsPhalacrocorax carboin the Grado and Marano lagoon (NE Italy)The aim of this study was to determine the importance of different environments for CormorantPhalacrocorax carbobiology in the Grado and Marano lagoon (Friuli Venezia Giulia, NE Italy, Upper Adriatic Sea), and to estimate the levels of fish removal within such areas. Data were collected on Cormorant abundance and the amount of fish consumed in two fishing valli (Valle Noghera and Valle Artalina) and in three tidal areas (Goppion, Cavanata sea, Grado and Marano lagoon). The number of Cormorants per 100 ha was relatively low in all the study areas. The highest density of feeding cormorants in November (24 birds/100 ha) was in Valle Noghera. The latter is ascribed to an isolated event of 50 birds in social fishing activity. During the rest of the November survey time (72% of the total), lower densities were noted (2.5 birds/100 ha). Fish consumption was also relatively low. In Valle Artalina the maximum was 6.8 kg/100 ha in December. The highest fish consumption was estimated in Valle Noghera in November (41.9 kg/100 ha) and in the Grado and Marano lagoon in January (7.6 kg/100 ha). In fish farms, the highest fish consumption is recorded in November and December, exclusively within wintering basins and canals. So these areas should be covered with wire nets. Furthermore, considering the high variability and irregularity of fish removal, the use of active deterring methods (e.g. gas cannons) can give good results, especially if applied during social fishing events.

scholarly journals [Waders and seabirds (Charadriiformes) nesting along the north-eastern Adriatic coastline (Veneto and Friuli-Venezia Giulia) in 2008-2014: abundance, trends and major conservation issues]

2019 ◽  
Vol 88 (2) ◽  
pp. 33-41 ◽  
Author(s):  
Francesco Scarton ◽  
Emiliano Verza ◽  
Carlo Guzzon ◽  
Paolo Utmar ◽  
Giacomo Sgorlon ◽  
...  
Keyword(s):  
Abundant Species ◽  
Venice Lagoon ◽  
Water Levels ◽  
Common Tern ◽  
Fish Farms ◽  
The North ◽  
Ne Italy ◽  
The Common ◽  
Sandwich Tern ◽  
Friuli Venezia Giulia

[In 2008-2014 wader and seabird nesting pairs were censused along the 220-km long coastline of the NE Adriatic Sea, in the Veneto and Friuli-Venezia Giulia regions (NE Italy). Fourteen species were regularly breeding, with an annual mean of 20,610 pairs (±1553, 1 SD). The most abundant species was the Yellow-legged Gull (about 13,400 pairs on average, 65% of the whole population of the study area), followed by the Common Tern (1670 pairs, 8.1%) and Common Redshank (1525 pairs, 7.4%). The whole population of waders and seabirds increased with an annual rate, estimated with the TRIM software, of +0.8%, with a greater increase (+4.3%) if the Yellow-legged Gull was not included. Twelve species were stable or increasing; only the yellow-legged gull (-1%) and the common redshank (-2.4%) were decreasing. The populations of several species exceed 10% of those estimated for the whole of Italy; those of the Eurasian Oystercatcher, Common Redshank and Sandwich Tern are among the most important in the whole Mediterranean. On average, about 8860 pairs (43%) nest in the Venice lagoon, 6,400 pairs (31%) in the Po Delta, 5100 pairs (25%) in the Friuli-Venezia Giulia lagoons. Among nesting habitats, semi-natural (such as the fish farms) and man-made sites (dredge islands) make each year about 70% of the nesting pairs. Saltmarsh islets host large numbers of Common Redshank and Sandwich Tern, while along the beach zone the only abundant species are the Yellow-legged Gull and the Eurasian Oystercatcher. The major conservation threats observed in the study area were the erosion of littoral islands, the uncontrolled occurrence of sunbathers along the beaches, the vegetation overgrowth at dredge islands, the increasing frequency of saltmarsh submersion by high tides, the strong fluctuations of water levels inside the fish farms.] [Article in Italian]

scholarly journals Responsiveness to acoustic stimulation, distribution and habitat preferences of the Grey-headed Woodpecker, Picus canus, and the Three-toed Woodpecker, Picoides tridactylus, in Friuli-Venezia Giulia (North-eastern Italy)

2015 ◽  
Vol 84 (1) ◽  
pp. 41
Author(s):  
Gianluca Rassati
Keyword(s):  
Picea Abies ◽  
Sea Level ◽  
Habitat Preferences ◽  
Acoustic Stimulation ◽  
The Other ◽  
Altitudinal Belt ◽  
Ne Italy ◽  
North Eastern ◽  
Fagus Sylvatica L ◽  
Friuli Venezia Giulia

The study was carried out from 2003 to 2011 with the aim of determining the responsiveness to acoustic stimulation, the distribution and the habitat preferences of <em>Picus canus</em> and <em>Picoides tridactylus</em> in Friuli-Venezia Giulia (NE Italy). <em>P. canus</em> resulted as being more responsive than <em>P. tridactylus</em> to conspecifics stimulation, responding in 13.23% of the points where a stimulus was emitted, against 7.65% of the other species. In both taxa, when there was a response, it was predominantly by the male birds. The most frequent type of response in <em>P. canus</em> was song, heard in 57.89% of the points, while for <em>P. tridactylus</em>, it was drumming, which was heard in 65.38% of the points. For both species (especially for P. tridactylus), a tendency was recorded to expand the range and to occupy new areas within the known range. <em>P. canus i</em>n Friuli-Venezia Giulia was found from altitudes close to the sea level up to the treeline (range 0-2000 m a.s.l.), while <em>P. tridactylus</em> was found in montane and subalpine woodlands (range 800- 2000 m a.s.l.). The observations of P. canus were obtained at a mean altitude of 977 m a.s.l. (± 402 SD), located in the altitudinal belt dominated by Fagus sylvatica L., which is present in more than half of the woodlands in which the woodpecker was found.<em> P. tridactylus</em> was discovered at a mean altitude of 1424 m a.s.l. (± 246 SD), located in the altitudinal belt dominated by Picea abies (L.) H. Karst., which is present in almost 90% of the woodlands in which this species was found. In some areas, densities of 0.67-2.26 territories/100 ha were obtained for<em> P. canus</em> and 0.16-0.40 territories/100 ha for <em>P. tridactylus.</em> In Friuli-Venezia Giulia, a population of 320-390 pairs of P. canus and 45-60 pairs of P. tridactylus has been estimated, with an approximate 15% increase of<em> P. canus</em> compared to the beginning of the century, and just over 60% for the other species. Finally, some aspects concerning conservation-related problems are reported.

scholarly journals ASPEKBIOLOGI IKANKURISI (Nemipterus japonicus) DI PERAIRANTELUKBANTEN

2016 ◽  
Vol 8 (1) ◽  
pp. 21
Author(s):  
Selvi Oktaviyani ◽  
Mennofatria Boer ◽  
Yonvitner Yonvitner
Keyword(s):  
Fisheries Management ◽  
Average Length ◽  
Maturity Stage ◽  
Allometric Growth ◽  
Fishing Activity ◽  
Fish Resources ◽  
Nemipterus Japonicus ◽  
Males And Females ◽  
Biological Aspects ◽  
First Maturity

<p>Ikan kurisi (<em>Nemipterus japonicus</em>) merupakan salah satu sumber daya ikan ekonomis penting di Perairan Teluk Banten dan banyak didaratkan di Pelabuhan Perikanan Nusantara (PPN) Karangantu, Banten. Intensitas penangkapan yang tinggi akan menyebabkan tangkap lebih (<em>overfishing</em>), sehingga mengancam kelestarian ikan kurisi. Penelitian ini bertujuan untuk mengetahui beberapa aspek biologi ikan kurisi di Perairan Teluk Banten, seperti struktur ukuran panjang, rasio kelamin, hubungan panjang berat, tingkat kematangan gonad, ukuran panjang rata-rata tertangkap (Lc) dan ukuran pertama kali matang gonad (Lm). Informasi yang diperoleh dapat menjadi bahan pertimbangan dalam kegiatan pengelolaan perikanan. Lokasi pengambilan contoh dilakukan di Pelabuhan Perikanan Nusantara (PPN) Karangantu, Banten dari bulan Mei hingga Agustus 2012. Hasil penelitian menunjukkan bahwa ukuran panjang total ikan kurisi<em> </em>berkisar antara 98 dan 211 mm. Perbandingan kelamin jantan dan betina dalam keadaan seimbang dan memiliki pola pertumbuhan allometrik negatif yang menunjukkan pertumbuhan panjang lebih cepat dibandingkan pertumbuhan beratnya. Lebih dari 50% ikan-ikan yang diamati baik jantan maupun betina selama bulan pengamatan belum matang gonad (<em>immature</em>).  Ukuran pertama kali matang gonad adalah 196 mm sedangkan ukuran panjang rata-rata tertangkap adalah 146 mm. Banyaknya ikan yang tertangkap dalam ukuran kecil (kurang dari panjang pertama kali matang gonad) akan mengganggu kelestarian ikan kurisi.</p><p><em><br /></em></p><p><em>Japanese threadfin bream </em>(Nemipterus japonicus<span style="text-decoration: underline;">)</span><em> is one of the most important economical fish resources in the Gulf of Banten and many landed at Archipelago Fishing Port (PPN) of Karangantu. High intensity of fishing activity can cause an overfihing, and threat sustainability of japanese threadfin bream. The research was aimed to determine some biological aspects of japanese threadfin bream in the Gulf of Banten, such as structure of the length, sex ratio, length-weight relationship, gonad maturity stage, the average length of captured (Lc) and the length of first maturity (Lm). It is believed that the collected information can be taken into consideration in the fisheries management activities. The sample was collected at PPN Karangantu, Banten from May to August 2012. The result showed that the length of </em><em>this fish </em><em>ranged between 98 and 211 mm. Ratio of male and female is balance and have negative allometric growth pattern show that the length of growth is more faster than the weight of growth. More than 50% of fish sample both males and females were immature gonads. During observation, length of  first maturity was 196 mm and the average length of captured was 146 mm. </em><em>Many fishes caught was smaller than Lm, It will interfere the sustainability of japanese threadfin bream.</em></p>

The UN and Its Agencies in the Development of Regulations on Management and Conservation of Fisheries: A Plurality of Initiatives but Questionable Coherence

2018 ◽  
Vol 21 (1) ◽  
pp. 63-82
Author(s):  
Chie Sato
Keyword(s):  
Fish Consumption ◽  
Regional Level ◽  
Sustainable Fisheries ◽  
Fish Resources ◽  
Management And Conservation

Although various organizations have been established for the management and conservation of fisheries and these have contributed to the establishment of common regulations pertaining to the management of fisheries on a global or regional level, current measures for the management and conservation of fish resources do not appear to be very effective. This article attempts to clarify the current problems involved in the management and conservation of fisheries and what kinds of regulations are necessary to manage sustainable fisheries effectively in an era of increasing fish consumption.

scholarly journals Retrofitting of Company Towns’ residential buildings: from international best practices to local implementations in Friuli Venezia Giulia region (NE Italy)

2019 ◽  
Vol 4 (2) ◽  
pp. 13
Author(s):  
Maria Vittoria Santi ◽  
Giovanna Saveria Laiola
Keyword(s):  
Best Practices ◽  
Environmental Sustainability ◽  
Residential Buildings ◽  
Local Level ◽  
Local Area ◽  
Company Towns ◽  
Energy Retrofit ◽  
Ne Italy ◽  
Starting Point ◽  
Friuli Venezia Giulia

<p>The paper illustrates the retrofit of company towns’ heritage, focusing on energy efficiency strategies for residential buildings with the aim to highlight the best practices, the solutions and methodologies to be implemented for the Friuli Venezia Giulia Region in NE Italy. The starting point is a comprehensive analysis of company town’s retrofit strategies featuring a comparison among relevant examples from Europe and Italy. Unesco industrial sites, sites by the Modern Movement, and Italian well-known workers’ villages are included in the analysis. The evaluation of the retrofit solutions takes into consideration aspects of protection and valorisation, functional renovation, and environmental sustainability upgrade. As a result, common strategies for the energy retrofit of company towns’ residential heritage are identified and summarised as the first step for their application at local level. In this sense, the study highlights that industrial villages are still inhabited and they require an upgrade according to the guidelines for architectural restoration, which meet the current standards of comfort. Moreover, the strategies drawn from the case-studies reveal an excellent potential of applicability for the local area and its company towns: Panzano shipyard village, Cave del Predil mining site, and Torviscosa factory town.</p>

scholarly journals Hydrogeological map of the Dinaric Karst Aquifer System

2017 ◽  
Author(s):  
Chloé Meyer
Keyword(s):  
Adriatic Sea ◽  
Karst Aquifer ◽  
High Quality ◽  
Dinaric Karst ◽  
Resources Management ◽  
Aquifer System ◽  
Ne Italy ◽  
Aquifer Systems ◽  
Hydrogeological Map ◽  
Karst Aquifer System

Groundwaters of the Dinaric Karst form some of the world's largest karst aquifer systems. The Dinaric region contains huge amounts of high quality groundwater. It is one of the major contributors of freshwater entering the Adriatic Sea. The Dinaric Karst Aquifer System extends from NE Italy through Slovenia, Croatia, Bosnia & Herzegovina, Montenegro to Albania. Karst formations connected with the Dinaric carbonate chain outcrop also in Serbia, FYR Macedonia, and possibly in NW Greece. In the framework of the DIKTAS GEF-project (2010-2014) executed by UNESCO-IHP, the four DIKTAS project countries (Albania, Bosnia and Herzegovina, Croatia and Montenegro) have agreed to create two mechanisms in order to facilitate enhanced consultation and exchange of information between the governmental entities that are involved in water resources management. Groundwater Karst Transboundary

scholarly journals IDENTIFIKASI AKTIVITAS PERIKANAN MERUSAK DI TELUK SAWAI

2021 ◽  
Vol 17 (2) ◽  
pp. 125-134
Author(s):  
Frederik W Ayal ◽  
James Abrahamsz ◽  
Reinhardus Pentury
Keyword(s):  
Data Collection ◽  
Control Strategies ◽  
Fishing Gear ◽  
Mining Activities ◽  
Fishing Activity ◽  
Interview Method ◽  
Fish Resources ◽  
Toxic Materials ◽  
Ministerial Decree ◽  
Destructive Fishing

Destructive fishing activities are fishing activities using materials, tools or means that damage fish resources and their environment, such as using explosives, toxic materials, strum, and other fishing gear that are not environmentally friendly (Marine and Fisheries Ministerial Decree Number 114, 2019). This activity still occurs in Maluku waters, including in Sawai Bay. The study aims to identify destructive forms of fishing in the waters of Sawai Bay and provide control recommendations to reduce the destructive fishing activity. The study was conducted in January-June 2020 in Sawai Bay. Data collection uses the purposive interview method, while the data is analyzed descriptively. The results showed that in the waters of Sawai Bay, three destructive fishing activities were identified, namely fishing using bombs/explosives, fishing using toxic materials and coral mining activities. Four control strategies are recommended as an effort to reduce destructive fishing activity in the waters of Sawai Bay in the future.   ABSTRAK Aktivitas perikanan merusak atau Destructive Fishing adalah kegiatan penangkapan ikan dengan menggunakan bahan, alat atau cara yang merusak sumberdaya ikan maupun lingkungannya, seperti menggunakan bahan peledak, bahan beracun, strum, dan alat tangkap lainnya yang tidak ramah lingkungan (KepMen KP Nomor 114, 2019). Aktivitas ini masih terjadi pada perairan Maluku, termasuk di Teluk Sawai. Penelitian ini bertujuan untuk mengidentifikasi bentuk-bentuk penangkapan ikan yang merusak pada perairan Teluk Sawai serta memberikan rekomendasi pengendalian untuk mereduksi aktivitas perikana. Yang merusak. Penelitian ini dilakukan pada Januari-Juni 2020 di Teluk Sawai. Pengumpulan data menggunakan metode purposive interview, sedangkan data dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa pada perairan Teluk Sawai, teridentifikasi tiga aktivitas perikanan merusak yaitu penangkapan ikan menggunakan bom/bahan peledak, penangkapan ikan menggunakan bahan beracun dan aktivitas penambangan karang. Empat strategi pengendalian direkomendasikan sebagai upaya mereduksi aktivitas perikanan merusak di perairan Teluk Sawai ke depannya.  Kata Kunci: perikanan merusak, penangkapan ikan, ikan karang, strategi pengendalian, Teluk Sawai  

scholarly journals Responsiveness to acoustic stimulation, distribution and habitat preferences of the Lesser Spotted Woodpecker, Dendrocopos minor, in Friuli-Venezia Giulia (North-eastern Italy)

2015 ◽  
Vol 85 (1) ◽  
pp. 51
Author(s):  
Gianluca Rassati
Keyword(s):  
Sea Level ◽  
Urban Areas ◽  
Forest Type ◽  
Habitat Preferences ◽  
Acoustic Stimulation ◽  
Ne Italy ◽  
North Eastern ◽  
Montane Zone ◽  
Dendrocopos Minor ◽  
Friuli Venezia Giulia

From 2005 to 2013 in Friuli-Venezia Giulia (NE Italy), using the playback method, a study on the Lesser Spotted Woodpecker, <em>Dendrocopos</em> <em>minor</em>, was carried out. The aims were to identify the trends in distribution, the range, and the habitat preferences, along with the evaluation of the responsiveness to acoustic stimulation. The Lesser Spotted Woodpecker responded in 10.67% of the points where a conspecifics stimulus was emitted, demonstrating a “strong” responsiveness to the first stimulus. In the case of a response, males prevailed, and the Lesser Spotted Woodpecker was confirmed as the <em>Picidae</em> species that tended to show itself the most (79.17% of the points). Thanks to the tendency to expand the range and to occupy new zones within the known range, most of the suitable environments were occupied in the Provinces of Trieste and Gorizia and from the lowlands to the outer prealpine zone, even in urban areas. In the montane zone, expansion occurred through ascending of the valleys and slopes. The species was found from sea level to 1200 m (mean altitude: 429±270 SD m a.s.l.) and particularly below 800 m a.s.l. (about 90% of the contacts). Of all the contacts, 71.69% occurred in broadleaf woodlands. Woodlands along watercourses were revealed to be very important (most highly represented forest type with more than one fifth of contacts), which have allowed the species to live in the lowlands and subsequently colonize other suitable environments, and the countryside and orchards, which are fundamental in the mountains for the spread and permanence of the taxon. In some areas, densities of 1.11-2.50 territories/100 ha were obtained. In Friuli-Venezia Giulia, a population of 150-190 pairs has been estimated, with an increase of just over 60% compared to the beginning of the century. Finally, some aspects concerning conservation-related problems are reported.

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