Advances in Oceanography and Limnology 2019-06-19T17:33:34+02:00 Nadia Moscato Open Journal Systems <p><strong>Advances in Oceanography and Limnology</strong>&nbsp;(<em>AIOL Journal</em>) is the official publication of the <a href="" target="_blank" rel="noopener">Italian Association of Limnology and Oceanology</a> (A.I.O.L.).</p> <p>The <em>AIOL Journal </em>publishes original research articles and reviews on different topics and novel discoveries in the fields of limnology and oceanography. Papers may deal with different or single physical, chemical and biological aspects, including biomolecules, populations and communities, ecosystem functioning and interactions between global change and ecosystems. Environmental monitoring and studies of regional importance will be considered only if they contribute to the general advance of aquatic sciences. Multidisciplinary articles linking different scientific disciplines (e.g., community ecology and metabolomic/toxicology, ecology and phylogenetic, water quality and economy…) are equally considered. Particularly welcomed are studies focusing on marine and freshwater ecosystems.</p> <p>Two regular issues of the <strong>Advances in Oceanography and Limnology</strong> are published each year. In addition, Special Issues and Proceedings that focus on topics that are timely and of interest to a significant number of aquatic scientists are published. From 2010 to 2014, previous issues of the <em>AIOL Journal</em> have been published by&nbsp;<a href="">T&amp;F</a>.</p> <p>This journal does not apply charge for publication to Authors as it is supported by institutional funds.</p> Sediment classification in a Brazilian reservoir: Pros and cons of parametric low frequencies 2019-06-19T17:33:34+02:00 Klajdi Sotiri Stephan Hilgert Stephan Fuchs <p>Sediment is the main factor that limits the reservoir lifetime. Therefore, sediment classification is an essential tool for planning and operating reservoir management measures. There has been important development in the hydroacoustic classification of lakebed, especially with linear systems. The main restrictions while using linear hydroacoustic systems for lakebed classification are the shallow penetration in high-frequency applications or the low vertical and horizontal resolution when using low frequencies. With the new developments in the area of echo sounders, parametric systems can achieve high penetration while preserving the high vertical and lateral resolution. To investigate the performance of parametric systems, a new lakebed classification approach was implemented by using a SES2000 Compact. The area studied was the Passauna reservoir in Parana State, Brazil. We used the first echo division method for processing the acoustic data combined with sediment core and grab sampling. The two physical parameters investigated, were the share of the finest fraction (&lt;63 µm) and wet bulk density (WBD). The results showed a high correlation between the primary frequency of 100 kHz (166 µs pulse length) and the physical parameters. Additionally, a significant correlation was observed with the acoustic parameters at 10 kHz frequency. The best correlating acoustic parameter was Attack/Decay (E1´/E1). The gas presence was found to be an important factor determining the penetration depth of the parametric system and the performance of the classification. The advantages of parametric systems, such small directivity and layering effect, represent the major restrictions in sediment classification applications.</p> 2019-05-27T00:00:00+02:00 ##submission.copyrightStatement## On the occurrence and distribution of Calanipeda aquaedulcis Kritschagin, 1873 (Copepoda, Calanoida, Pseudodiaptomidae) in Sicily, Italy, with some notes on coexistence and species replacement in calanoid copepods 2019-06-19T17:33:32+02:00 Luca Vecchioni Federico Marrone Luigi Naselli-Flores <p>The only population of the pseudodiaptomid copepod <em>Calanipeda aquaedulcis</em> Kritschagin, 1873 to date reported to occur in Sicily disappeared at the beginning of the XXI century due to deep environmental changes which affected the single site (Lake Biviere di Gela) known for this species on the island. In that site <em>C. aquaedulcis</em> is now replaced by <em>Copidodiaptomus numidicus </em>(Gurney, 1909)<em>, </em>a diaptomid copepod whose distribution has been greatly increasing since the second half of the last century. In the present note, the occurrence of <em>C. aquaedulcis</em> in 12 novel water bodies spread throughout Sicily is reported, and some environmental data on the sites where the species was collected are provided. Moreover, in a few sites <em>C. aquaedulcis</em> was found to co-occur with <em>Copidodiaptomus numidicus</em>. The recorded co-occurrence of these two species and the replacement of <em>C. aquaedulcis</em> with <em>C. numidicus</em> in Lake Biviere di Gela are briefly discussed.</p> 2019-05-27T00:00:00+02:00 ##submission.copyrightStatement## Remembering Alvise Vittori (Riva del Garda 1932 – Trento 2018) 2019-06-19T17:33:31+02:00 Giovanna Flaim Francesca Ciutti <p>Dr. Alvise Vittori was a well-known Italian ichthyologist, limnologist and all-round ecologist.</p> 2019-05-27T00:00:00+02:00 ##submission.copyrightStatement##