Advances in Oceanography and Limnology 2020-04-08T20:47:35+00:00 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> The success in the short-distance communication for mating does not depend on chemical signals in the crustacean decapod Procambarus clarkii (Girard, 1852) 2020-04-08T20:47:34+00:00 Stefania Peddio Giorgia Sollai Cinzia Podda Giacomo Frau Francesco Palmas Andrea Sabatini Roberto Crnjar Paolo Solari <p>Pheromone-driven sex recognition has been widely documented in crayfish and a great deal of evidence supports the involvement of pheromones in their mating behaviour. This study investigates whether sexual interaction and mating success in the red swamp crayfish <em>Procambarus clarkii</em> are dependent on short-distance chemical communication between sexes, mediated by urine-borne pheromones. We compared the mating behaviour of intact animals that could release urine to chemically communicate in a natural way with that of urine-blocked animal pairs, for which chemical communication was precluded. Our results show that urine-borne pheromones are not critical for the reproductive success of <em>P. clarkii</em>, at least over the short-range distance (&lt;1 m) considered in this study, during which the animals were confined in a restricted tank, facing one each other, and thus able to promptly mate. Under these experimental conditions, a lack of urine release neither precluded the occurrence, nor affected the duration of the different phases of mating behaviour. We conclude that short-distance chemical communication in <em>P. clarkii</em> is not a prerequisite for mating, and suggest that it could be affected by alternative sensory modalities, likely vision and/or acoustic signalling.</p> 2019-12-11T00:00:00+00:00 ##submission.copyrightStatement## Assessment of the physico-chemical properties of Oguta Lake compared to the established values of the Federal Ministry of Environment, Nigeria 2020-04-08T20:47:35+00:00 Felix Atawal Andong Ngozi Evelyn Ezenwaji Temitope Dadewura Melefa Funmilayo Faith Hinmikaiye Obiechina Vitus Nnadi Olasoji Oluwafemi <p>Constant assessment of physical and chemical parameters in freshwater ecosystems is largely recommended. This is even more important when water resources, <em>e.g</em>. lakes in most countries, serve as a source of water for domestic and commercial purposes, and /or when freshwater ecosystems represent a refuge for most aquatic organisms. In this paper, we investigated the physical and chemical properties of water resources at three sampling stations of Lake Oguta, comparing the weekly values (June-July 2018) with the water quality standard established by the Nigerian Federal Ministry of Water Resources (FMWR). The parameters analysed included water temperature, pH, dissolved oxygen (DO), chemical and biological oxygen demand (COD, BOD), potassium, magnesium, sodium, calcium, phosphate, nitrate, chloride and sulphate. Most of the cations (calcium, magnesium and sodium), anions (phosphate, nitrate, chloride and sulphate), as well as water temperature, BOD and DO were below the quality standard limits. The basic chemistry and temporal variations may have been caused mostly by natural factors such as geology, topography, meteorology, hydrology, water levels and biological activity. Being in line with the recommended standard levels, the nutrient concentrations, pH and hardness in the current study may indicate favourable conditions for the life of aquatic organisms and contemporary co-existence with the human exploitation for drinking purposes. Nevertheless, to assure a safely and conscious exploitation of this water resource, we recommend continuity in the monitoring studies. To assure an accurate evaluation of the physical and chemical parameters, future studies should include a larger sample size and extended study periods (including other seasons).</p> 2019-12-11T00:00:00+00:00 ##submission.copyrightStatement## Comparing community response indices in aquatic food web models 2020-04-08T20:47:33+00:00 Ágnes Móréh Ferenc Jordán <p>Aquatic ecosystems face several major challenges from the introduction and invasion of species, to overfishing. In order to better manage these situations, we need predictive models, where diverse scenarios can be simulated and tested. One key challenge to address is how to quantify the relationships between single-species disturbances and their multispecies effects. Mapping the spread of direct and indirect effects in food webs helps to link species to communities. Since food webs are complex networks of interactions, it is typically not easy to make predictions, so modelling and simulation may help to reveal general patterns. In food web simulations, one can quantify the effects of local perturbations on other species, <em>i.e</em>., community response. This may provide information about the relative importance of individual species and it is also useful to assess the vulnerability of the whole community to local changes. However, community response can be measured in several ways and various response functions give different results. In order to better understand their similarities and differences, we present a comparative study on a reasonable set of community response functions in food web simulations. These results contribute to build more predictive, multi-species models for systems-based conservation and management.</p> 2019-12-31T00:00:00+00:00 ##submission.copyrightStatement## Long-term studies for evaluating the impacts of natural and anthropic stressors on limnological features and the ecosystem quality of Lake Iseo 2020-04-08T20:47:34+00:00 Barbara Leoni Morena Spreafico Martina Patelli Valentina Soler Letizia Garibaldi Veronica Nava <p>We review the state of the art of limnological studies in Lake Iseo and provide updated data concerning long-term investigations (from 1993 to 2018) carried out on chemical and physical parameters (<em>e.g</em>., oxygen, phosphorus, silicon). Changes observed in Lake Iseo were compared with those reported in other Deep South alpine Lakes (DSLs) to highlight analogies and differences of long-term chemical, physical, and biological patterns. Until the 1960s, Lake Iseo and other DSLs were oligotrophic. The increase of anthropogenic pressure and global warming has led to a progressive and unrecovered process of eutrophication. Moreover, the decrease in frequency of full mixing episodes has induced a state of temporary meromixis. Other changes have been identified over the last two decades, especially concerning the phytoplankton and zooplankton communities, and new emerging chemical pollutants were detected. Given the important ecological and socioeconomic role of Lake Iseo, long-term investigations are of paramount importance to understand the response of the lake ecosystem to climatic and anthropogenic stressors. These two factors can also act coupled with new combined and synergic effects.</p> 2019-12-19T00:00:00+00:00 ##submission.copyrightStatement##