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Prof. Luigi Naselli-Flores
University of Palermo

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Journal article
Published: 30 June 2021 in Water
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The influence of filter-feeding bivalves on plankton communities, nutrients, and water quality in a given aquatic ecosystem is so profound that they can be considered ecosystem engineers. In a 70-day mesocosm experiment, we tested the hypothesis that Corbicula fluminea would change plankton community structure by reducing small zooplankton and large phytoplankton and improve water quality by reducing nutrients. We monitored levels of nitrogen and phosphorus, organic suspended solids (OSS), and light at the sediment surface. Within the plankton, phytoplankton biomass (as Chl a, >0.45 μm), the biomass of microphytoplankton (>20 μm), nanophytoplankton (2–20 μm), picophytoplankton (0.2–2 μm), and zooplankton were determined. Compared with the controls, C. fluminea reduced the abundance of rotifers and the biomass of phytoplankton, and picophytoplankton, thereby modifying the plankton community structure. We did not observe reductions in TN and TP concentration, but OSS concentrations were reduced, and light intensity at the sediment surface was increased as a result of the improved water transparency. Our research shows that colonization by C. fluminea may modify plankton community structure and improve water quality of eutrophic shallow lakes, shedding further light on the ecological roles of filter-feeding bivalves in aquatic ecosystems.

ACS Style

Yuqin Rong; Yali Tang; Lijuan Ren; William Taylor; Vladimir Razlutskij; Luigi Naselli-Flores; Zhengwen Liu; Xiufeng Zhang. Effects of the Filter-Feeding Benthic Bivalve Corbicula fluminea on Plankton Community and Water Quality in Aquatic Ecosystems: A Mesocosm Study. Water 2021, 13, 1827 .

AMA Style

Yuqin Rong, Yali Tang, Lijuan Ren, William Taylor, Vladimir Razlutskij, Luigi Naselli-Flores, Zhengwen Liu, Xiufeng Zhang. Effects of the Filter-Feeding Benthic Bivalve Corbicula fluminea on Plankton Community and Water Quality in Aquatic Ecosystems: A Mesocosm Study. Water. 2021; 13 (13):1827.

Chicago/Turabian Style

Yuqin Rong; Yali Tang; Lijuan Ren; William Taylor; Vladimir Razlutskij; Luigi Naselli-Flores; Zhengwen Liu; Xiufeng Zhang. 2021. "Effects of the Filter-Feeding Benthic Bivalve Corbicula fluminea on Plankton Community and Water Quality in Aquatic Ecosystems: A Mesocosm Study." Water 13, no. 13: 1827.

Journal article
Published: 10 February 2021 in Ecological Indicators
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We hypothesize that iron availability plays an important role in driving phytoplankton structure and dynamics in tropical reservoir. This role has often been neglected in routine monitoring of water quality since the main focus has been addressed on macronutrients such phosphorus and nitrogen. To elucidate the potential regulation exerted by iron availability on phytoplankton, a limnological investigation was carried out in two neighboring eutrophic reservoirs in tropical China. Traditional physical and chemical variables were measured along with total and dissolved iron concentrations to explore how they could influence phytoplankton structure. Statistical analyses showed that dissolved iron (DFe) as well as dissolved nitrogen (DIN) and soluble reactive phosphorus (SRP) significantly explained the variance of phytoplankton assemblages in both reservoirs. We could also find that diazotrophic cyanobacteria blooms generally developed when DFe concentrations were above 0.025 mg/L. Moreover, the DFe availability in the water columns was modulated by the effects exerted by the stratification/circulation patterns on redox conditions and pH values. Anaerobic conditions favored the release of iron and phosphorus from sediments, and likely favored an enhanced nitrogen assimilation and a decrease of DIN in the epilimnion. Our results highlighted that iron functions as an important factor promoting diazotrophic cyanobacteria and driving seasonal phytoplankton succession in tropical eutrophic reservoirs, not only with a direct effect on phytoplankton growth but also indirect effect by modifying the availability of nitrogen and phosphorus.

ACS Style

Li-Juan Xiao; La-Mei Lei; Liang Peng; Qiu-Qi Lin; Luigi Naselli-Flores. Iron operates as an important factor promoting year-round diazotrophic cyanobacteria blooms in eutrophic reservoirs in the tropics. Ecological Indicators 2021, 125, 107446 .

AMA Style

Li-Juan Xiao, La-Mei Lei, Liang Peng, Qiu-Qi Lin, Luigi Naselli-Flores. Iron operates as an important factor promoting year-round diazotrophic cyanobacteria blooms in eutrophic reservoirs in the tropics. Ecological Indicators. 2021; 125 ():107446.

Chicago/Turabian Style

Li-Juan Xiao; La-Mei Lei; Liang Peng; Qiu-Qi Lin; Luigi Naselli-Flores. 2021. "Iron operates as an important factor promoting year-round diazotrophic cyanobacteria blooms in eutrophic reservoirs in the tropics." Ecological Indicators 125, no. : 107446.

Journal article
Published: 08 September 2020 in Hydrobiologia
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This paper offers a brief overview of the contributions provided by widely recognised phytoplankton ecologists to honour the memory of an undisputed leader in the field of aquatic sciences: Colin S. Reynolds. Colin passed away quite unexpectedly in December 2018 causing a wave of sorrow that rapidly circulated among friends and colleagues all over the world. The 14 review papers collected in this Special Issue form a tribute to Colin’s scientific thinking, which survives the man and represents a legacy to all the scientists in the field, especially to young generations. Although authors and editors carefully selected 14 different topics, a certain degree of overlap exists among the collected contributions. This, far from being a limit, further underlines the holistic nature of Colin’s vision about phytoplankton and shows the need to develop a comprehensive cultural framework when analysing this complex ecological group of organisms.

ACS Style

Luigi Naselli-Flores; Martin T. Dokulil; J. Alex Elliott; Judit Padisák. New, old and evergreen frontiers in freshwater phytoplankton ecology: the legacy of Colin S. Reynolds. Hydrobiologia 2020, 848, 1 -6.

AMA Style

Luigi Naselli-Flores, Martin T. Dokulil, J. Alex Elliott, Judit Padisák. New, old and evergreen frontiers in freshwater phytoplankton ecology: the legacy of Colin S. Reynolds. Hydrobiologia. 2020; 848 (1):1-6.

Chicago/Turabian Style

Luigi Naselli-Flores; Martin T. Dokulil; J. Alex Elliott; Judit Padisák. 2020. "New, old and evergreen frontiers in freshwater phytoplankton ecology: the legacy of Colin S. Reynolds." Hydrobiologia 848, no. 1: 1-6.

Journal article
Published: 23 July 2020 in Hydrobiologia
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There is hardly any sunshine exposed surface on this Earth, be it water or terrain, which would not support some biota. Still, many habitats offer harsh conditions requiring specialized physiological adaptations to survive. These environments are referred to as extremes; often inhabited by extremophilic organisms. In this review, characteristic species and assemblage properties of phytoplankton inhabiting extreme environments (especially lakes and pools where planktic life is potentially possible and independently of their origin) in terms of alkalinity, acidity, DOC, salinity, temperature, light and mixing regime will be outlined. Lakes characterized by more than a single extreme are common (e.g. saline + alkaline; acidic + high DOC + high metal content + low light). At the edge of extremes (e.g. pH of 1; salinity over ~ 100–150 g l−1) single species with appropriate physiological adaptation are selected and the phytoplankton is often dominated by a single species (monodominant) setting compositional diversity to zero. Under less extreme conditions permanent equilibria may persist; in many cases over several years in contrast to „average” lakes where equilibria are rare and ephemeral. Food webs depending on „extreme phytoplankton” are often atypical for example because the microbial loop is of prior importance or because birds are top predators.

ACS Style

Judit Padisák; Luigi Naselli-Flores. Phytoplankton in extreme environments: importance and consequences of habitat permanency. Hydrobiologia 2020, 848, 157 -176.

AMA Style

Judit Padisák, Luigi Naselli-Flores. Phytoplankton in extreme environments: importance and consequences of habitat permanency. Hydrobiologia. 2020; 848 (1):157-176.

Chicago/Turabian Style

Judit Padisák; Luigi Naselli-Flores. 2020. "Phytoplankton in extreme environments: importance and consequences of habitat permanency." Hydrobiologia 848, no. 1: 157-176.

Journal article
Published: 30 April 2020 in Ecological Indicators
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The elemental composition of phytoplankton is a critical factor for primary production and nutrient recycling. The increase anthropogenic nutrient input into freshwater ecosystems is affecting phytoplankton assemblage structure and its stoichiometry. Reservoirs of South China generally show low level of phosphate and it is not clear how phytoplankton can grow and occasionally bloom in such conditions. Therefore, an indoor experiment was conducted to investigate the response of natural phytoplankton communities to 25 levels of supplied nitrogen to phosphorus ratios (N/P), arising from the combination of 5 levels of N and P. Our aim was to check the effects of absolute and relative N and P on phytoplankton growth and structure. We assumed that Alkaline Phosphatase (APA) provides a way to use alternative P resource. Our hypotheses include: (1) phytoplankton stoichiometry would be in homeostasis (sensu Sterner & Elser, 2002) under different N and P treatments; (2) absolute nutrient values rather than its ratio matters for phytoplankton assemblage; and (3) phytoplankton cell size declines to lower P requirements facing P limitation. Results showed that phytoplankton in this subtropical reservoir use alternative P sources via APA to support its growth. The absolute values of N and P instead and not their ratios were important for phytoplankton. The N/P ratio cannot be a reliable indicator for nutrient limitation or phytoplankton shift. During the fast-growing phase, their elemental contents were not sensitive to supplied nutrients, and their stoichiometry was more constrained compared to that in slow-growing phase. The plasticity of cellular stoichiometry was mainly due to the variations of cellular P. Phytoplankton stoichiometry was weakly homeostatic, and this mechanism provides a strategy to keep growth relatively stable in a variable nutrient environment.

ACS Style

Yang Yang; Jingyun Pan; Bo-Ping Han; Luigi Naselli-Flores. The effects of absolute and relative nutrient concentrations (N/P) on phytoplankton in a subtropical reservoir. Ecological Indicators 2020, 115, 106466 .

AMA Style

Yang Yang, Jingyun Pan, Bo-Ping Han, Luigi Naselli-Flores. The effects of absolute and relative nutrient concentrations (N/P) on phytoplankton in a subtropical reservoir. Ecological Indicators. 2020; 115 ():106466.

Chicago/Turabian Style

Yang Yang; Jingyun Pan; Bo-Ping Han; Luigi Naselli-Flores. 2020. "The effects of absolute and relative nutrient concentrations (N/P) on phytoplankton in a subtropical reservoir." Ecological Indicators 115, no. : 106466.

Journal article
Published: 10 March 2020 in Hydrobiologia
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The amazing morphological diversity of phytoplankton has to be considered an evolutionarily driven compendium of strategies to cope with the strong variability and unpredictability of the pelagic environment. Phytoplankton collects unicellular and colonial photosynthetic organisms adapted to live in apparent suspension in turbulent water masses. Turbulence represents a key driver of phytoplankton dynamics in all aquatic ecosystems and phytoplankton morphological variability is the evolutionary response of this group of photosynthetic organisms to the temporal and spatial scales of variability of turbulence. This paper reviews the existing literature on the effects exerted by turbulence on phytoplankton populations and is aimed at showing how deeply turbulence contributes to the shape and size structure of phytoplankton assemblages. Our aim is to explore how turbulence governs phytoplankton access to resources and, at the same time, how the shape and size structure of phytoplankton represent the evolutionary way in which this group of organisms has optimised its survival in the highly dynamic aquatic environment. The paper is intended to serve as an homage to the (phytoplankton) ecologist Colin S. Reynolds. His life-long work highlighted how profoundly the ecology of phytoplankton depends on the physical constraints governing the movements of the water masses in which phytoplankton evolved and lives.

ACS Style

Luigi Naselli-Flores; Tamar Zohary; Judit Padisák. Life in suspension and its impact on phytoplankton morphology: an homage to Colin S. Reynolds. Hydrobiologia 2020, 848, 7 -30.

AMA Style

Luigi Naselli-Flores, Tamar Zohary, Judit Padisák. Life in suspension and its impact on phytoplankton morphology: an homage to Colin S. Reynolds. Hydrobiologia. 2020; 848 (1):7-30.

Chicago/Turabian Style

Luigi Naselli-Flores; Tamar Zohary; Judit Padisák. 2020. "Life in suspension and its impact on phytoplankton morphology: an homage to Colin S. Reynolds." Hydrobiologia 848, no. 1: 7-30.

Trends in aquatic ecology iii
Published: 09 March 2020 in Hydrobiologia
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ACS Style

Sidinei Magela Thomaz; Luigi Naselli-Flores; Diego Fontaneto; Koen Martens. Preface: Emerging trends in aquatic ecology III. Hydrobiologia 2020, 847, 1565 -1570.

AMA Style

Sidinei Magela Thomaz, Luigi Naselli-Flores, Diego Fontaneto, Koen Martens. Preface: Emerging trends in aquatic ecology III. Hydrobiologia. 2020; 847 (7):1565-1570.

Chicago/Turabian Style

Sidinei Magela Thomaz; Luigi Naselli-Flores; Diego Fontaneto; Koen Martens. 2020. "Preface: Emerging trends in aquatic ecology III." Hydrobiologia 847, no. 7: 1565-1570.

Review
Published: 16 January 2020 in Water
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In this overview (introductory article to a special issue including 14 papers), we consider all main types of natural and artificial inland freshwater habitas (fwh). For each type, we identify the main biodiversity patterns and ecological features, human impacts on the system and environmental issues, and discuss ways to use this information to improve stewardship. Examples of selected key biodiversity/ecological features (habitat type): narrow endemics, sensitive (groundwater and GDEs); crenobionts, LIHRes (springs); unidirectional flow, nutrient spiraling (streams); naturally turbid, floodplains, large-bodied species (large rivers); depth-variation in benthic communities (lakes); endemism and diversity (ancient lakes); threatened, sensitive species (oxbow lakes, SWE); diverse, reduced littoral (reservoirs); cold-adapted species (Boreal and Arctic fwh); endemism, depauperate (Antarctic fwh); flood pulse, intermittent wetlands, biggest river basins (tropical fwh); variable hydrologic regime—periods of drying, flash floods (arid-climate fwh). Selected impacts: eutrophication and other pollution, hydrologic modifications, overexploitation, habitat destruction, invasive species, salinization. Climate change is a threat multiplier, and it is important to quantify resistance, resilience, and recovery to assess the strategic role of the different types of freshwater ecosystems and their value for biodiversity conservation. Effective conservation solutions are dependent on an understanding of connectivity between different freshwater ecosystems (including related terrestrial, coastal and marine systems).

ACS Style

Marco Cantonati; Sandra Poikane; Catherine M. Pringle; Lawrence E. Stevens; Eren Turak; Jani Heino; John S. Richardson; Rossano Bolpagni; Alex Borrini; Núria Cid; Martina Čtvrtlíková; Diana M. P. Galassi; Michal Hájek; Ian Hawes; Zlatko Levkov; Luigi Naselli-Flores; Abdullah A. Saber; Mattia Di Cicco; Barbara Fiasca; Paul B. Hamilton; Jan Kubečka; Stefano Segadelli; Petr Znachor. Characteristics, Main Impacts, and Stewardship of Natural and Artificial Freshwater Environments: Consequences for Biodiversity Conservation. Water 2020, 12, 260 .

AMA Style

Marco Cantonati, Sandra Poikane, Catherine M. Pringle, Lawrence E. Stevens, Eren Turak, Jani Heino, John S. Richardson, Rossano Bolpagni, Alex Borrini, Núria Cid, Martina Čtvrtlíková, Diana M. P. Galassi, Michal Hájek, Ian Hawes, Zlatko Levkov, Luigi Naselli-Flores, Abdullah A. Saber, Mattia Di Cicco, Barbara Fiasca, Paul B. Hamilton, Jan Kubečka, Stefano Segadelli, Petr Znachor. Characteristics, Main Impacts, and Stewardship of Natural and Artificial Freshwater Environments: Consequences for Biodiversity Conservation. Water. 2020; 12 (1):260.

Chicago/Turabian Style

Marco Cantonati; Sandra Poikane; Catherine M. Pringle; Lawrence E. Stevens; Eren Turak; Jani Heino; John S. Richardson; Rossano Bolpagni; Alex Borrini; Núria Cid; Martina Čtvrtlíková; Diana M. P. Galassi; Michal Hájek; Ian Hawes; Zlatko Levkov; Luigi Naselli-Flores; Abdullah A. Saber; Mattia Di Cicco; Barbara Fiasca; Paul B. Hamilton; Jan Kubečka; Stefano Segadelli; Petr Znachor. 2020. "Characteristics, Main Impacts, and Stewardship of Natural and Artificial Freshwater Environments: Consequences for Biodiversity Conservation." Water 12, no. 1: 260.

Articles
Published: 02 October 2019 in Inland Waters
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Nonindigenous species (NIS) represent a threat to aquatic biodiversity worldwide. However, freshwater ecosystems in drylands are potentially more prone to biological invasions than those located in temperate regions because of the higher number of artificial waterbodies generally occurring in these areas, which might act as invasion hubs for NIS. We review the available information about NIS in Sicilian waterbodies, discuss the role exerted by artificial lakes and ponds in facilitating the establishment of NIS in arid and semiarid areas, and compare the invasibility of permanent and temporary waterbodies in drylands. Artificial waterbodies increase the target-area effect for dispersers and provide a hospitable environment for NIS because of their recent origin and the lack of efficient biological filters against newcomers, thus acting as bridgeheads and invasion hubs favouring invasive species. Finally, we propose actions to attenuate the threats caused by NIS to the sensitive native biota of aquatic ecosystems in drylands.

ACS Style

Luigi Naselli-Flores; Federico Marrone. Different invasibility of permanent and temporary waterbodies in a semiarid Mediterranean Island. Inland Waters 2019, 9, 411 -421.

AMA Style

Luigi Naselli-Flores, Federico Marrone. Different invasibility of permanent and temporary waterbodies in a semiarid Mediterranean Island. Inland Waters. 2019; 9 (4):411-421.

Chicago/Turabian Style

Luigi Naselli-Flores; Federico Marrone. 2019. "Different invasibility of permanent and temporary waterbodies in a semiarid Mediterranean Island." Inland Waters 9, no. 4: 411-421.

Journal article
Published: 27 May 2019 in Advances in Oceanography and Limnology
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The only population of the pseudodiaptomid copepod Calanipeda aquaedulcis 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 C. aquaedulcis is now replaced by Copidodiaptomus numidicus (Gurney, 1909), a diaptomid copepod whose distribution has been greatly increasing since the second half of the last century. In the present note, the occurrence of C. aquaedulcis 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 C. aquaedulcis was found to co-occur with Copidodiaptomus numidicus. The recorded co-occurrence of these two species and the replacement of C. aquaedulcis with C. numidicus in Lake Biviere di Gela are briefly discussed.

ACS Style

Luca Vecchioni; Federico Marrone; Luigi Naselli-Flores. 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. Advances in Oceanography and Limnology 2019, 10, 1 .

AMA Style

Luca Vecchioni, Federico Marrone, Luigi Naselli-Flores. 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. Advances in Oceanography and Limnology. 2019; 10 (1):1.

Chicago/Turabian Style

Luca Vecchioni; Federico Marrone; Luigi Naselli-Flores. 2019. "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." Advances in Oceanography and Limnology 10, no. 1: 1.

Phytoplankton and biotic interactions
Published: 24 January 2019 in Hydrobiologia
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ACS Style

Hugo Sarmento; Irina Izaguirre; Vanessa Becker; Judit Padisák; Luigi Naselli-Flores; Vera L. M. Huszar. Phytoplankton and its biotic interactions: Colin Reynolds’ legacy to phytoplankton ecologists. Hydrobiologia 2019, 831, 1 -4.

AMA Style

Hugo Sarmento, Irina Izaguirre, Vanessa Becker, Judit Padisák, Luigi Naselli-Flores, Vera L. M. Huszar. Phytoplankton and its biotic interactions: Colin Reynolds’ legacy to phytoplankton ecologists. Hydrobiologia. 2019; 831 (1):1-4.

Chicago/Turabian Style

Hugo Sarmento; Irina Izaguirre; Vanessa Becker; Judit Padisák; Luigi Naselli-Flores; Vera L. M. Huszar. 2019. "Phytoplankton and its biotic interactions: Colin Reynolds’ legacy to phytoplankton ecologists." Hydrobiologia 831, no. 1: 1-4.

Journal article
Published: 19 December 2018 in Science of The Total Environment
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Naturally stressed ecosystems hold a unique fraction of biodiversity. However, they have been largely ignored in biomonitoring and conservation programmes, such as the EU Water Framework Directive, while global change pressures are threatening their singular values. Here we present a framework to classify and evaluate the ecological quality of naturally stressed rivers along a water salinity gradient. We gathered datasets, including aquatic macroinvertebrate assemblages and environmental information, for 243 river locations across the western Mediterranean to: a) gauge the role of natural stressors (salinity) in driving aquatic community richness and composition; b) make river classifications by encompassing the wide range of environmental and biological variation exhibited by Mediterranean rivers; c) provide effective biomonitoring metrics of ecological quality for saline rivers. Our results showed that water salinity played a pivotal role in explaining the community richness and compositional changes in rivers, even when considering other key and commonly used descriptors, such as elevation, climate or lithology. Both environmental and biologically-based classifications included seven river types: three types of freshwater perennial rivers, one freshwater intermittent river type and three new saline river types. These new saline types were not included in previous classifications. Their validation by independent datasets showed that the saline and freshwater river types represented differentiable macroinvertebrate assemblages at family and species levels. Biomonitoring metrics based on the abundance of indicator taxa of each saline river type provided a much better assessment of the ecological quality of saline rivers than other widely used biological metrics and indices. Here we demonstrate that considering natural stressors, such as water salinity, is essential to design effective and accurate biomonitoring programmes for rivers and to preserve their unique biodiversity.

ACS Style

Cayetano Gutiérrez-Cánovas; Paula Arribas; Luigi Naselli-Flores; Nard Bennas; Marta Finocchiaro; Andrés Millán; Josefa Velasco. Evaluating anthropogenic impacts on naturally stressed ecosystems: Revisiting river classifications and biomonitoring metrics along salinity gradients. Science of The Total Environment 2018, 658, 912 -921.

AMA Style

Cayetano Gutiérrez-Cánovas, Paula Arribas, Luigi Naselli-Flores, Nard Bennas, Marta Finocchiaro, Andrés Millán, Josefa Velasco. Evaluating anthropogenic impacts on naturally stressed ecosystems: Revisiting river classifications and biomonitoring metrics along salinity gradients. Science of The Total Environment. 2018; 658 ():912-921.

Chicago/Turabian Style

Cayetano Gutiérrez-Cánovas; Paula Arribas; Luigi Naselli-Flores; Nard Bennas; Marta Finocchiaro; Andrés Millán; Josefa Velasco. 2018. "Evaluating anthropogenic impacts on naturally stressed ecosystems: Revisiting river classifications and biomonitoring metrics along salinity gradients." Science of The Total Environment 658, no. : 912-921.

Research paper
Published: 22 September 2018 in Limnology
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Correctly identifying and mapping the distribution patterns of passively dispersing freshwater organisms is an important task to understand the mechanisms through which these organisms move across the world and to counteract the introduction of invasive alien species in a timely way; moreover, in the light of the growing evidence of the pervasiveness of cryptic species and cryptic biological invasions among all animal groups, the use of molecular identification tools is strongly advisable. In this context, we present the first record of the freshwater jellyfish Craspedacusta sowerbii Lankester, 1880 in the Mediterranean island of Sicily, Italy. This invasive species, native to China, was found during a routine survey campaign aimed at assessing the freshwater species richness in the Sicilian region. Individuals were collected in November 2017 and identified to species level through the sequencing of fragments of both mitochondrial and nuclear genes, and their comparison to the sequences available on public databases. The analysis of molecular data proved that the Sicilian population belongs to C. sowerbii s.s., i.e. one of the two major Craspedacusta lineages which have been discovered to have invaded Europe and which were until recently erroneously jointly reported under the binomen Craspedacusta sowerbii. In order to get a clearer picture of the history and patterns of freshwater jellyfish invasion worldwide, the need for molecular identification of all the non-native Craspedacusta populations currently reported as C. sowerbii, and the opportunity of monitoring human-impacted ecosystems is stressed.

ACS Style

Enrico Schifani; Arturo Viviano; Roberto Viviano; Luigi Naselli-Flores; Federico Marrone. Different lineages of freshwater jellyfishes (Cnidaria, Olindiidae, Craspedacusta) invading Europe: another piece of the puzzle from Sicily, Italy. Limnology 2018, 20, 143 -151.

AMA Style

Enrico Schifani, Arturo Viviano, Roberto Viviano, Luigi Naselli-Flores, Federico Marrone. Different lineages of freshwater jellyfishes (Cnidaria, Olindiidae, Craspedacusta) invading Europe: another piece of the puzzle from Sicily, Italy. Limnology. 2018; 20 (2):143-151.

Chicago/Turabian Style

Enrico Schifani; Arturo Viviano; Roberto Viviano; Luigi Naselli-Flores; Federico Marrone. 2018. "Different lineages of freshwater jellyfishes (Cnidaria, Olindiidae, Craspedacusta) invading Europe: another piece of the puzzle from Sicily, Italy." Limnology 20, no. 2: 143-151.

Primary research paper
Published: 31 May 2018 in Hydrobiologia
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Reservoirs are river–lake hybrid ecosystems characterized by a marked longitudinal zonation and variable flushing rates depending on the use of stored waters. The structure of their phytoplankton is therefore subjected to the interplay between the environmental conditions of the different zones (species sorting) and the strength of the unidirectional flow (mass effect). The spatial distribution of spring phytoplankton was investigated in a tropical reservoir across its different zones. Phytoplankton displayed heterogeneous spatial patterns from the turbulent, nutrient-rich riverine zones to the relatively stable lacustrine zone. The analysis of this spatial heterogeneity revealed the relative importance of species sorting and mass effect in this morphologically complex reservoir. Different taxonomic groups showed different spatial patterns due to their specific physiological and morphological features, and as a result of the local environmental filtering. In the studied reservoir, the strength of the homogenizing effect of water flow did not smooth the spatial heterogeneity and played a weak role in constraining spring phytoplankton. Actually, water flow contributed to the spatial heterogeneity of phytoplankton by enhancing the local environmental differences caused by an operational drop in water level, and species sorting resulted as the primary forcing in determining spring phytoplankton spatial distribution.

ACS Style

Yang Yang; Haiyu Niu; Lijuan Xiao; Qiuqi Lin; Bo-Ping Han; Luigi Naselli-Flores. Spatial heterogeneity of spring phytoplankton in a large tropical reservoir: could mass effect homogenize the heterogeneity by species sorting? Hydrobiologia 2018, 819, 109 -122.

AMA Style

Yang Yang, Haiyu Niu, Lijuan Xiao, Qiuqi Lin, Bo-Ping Han, Luigi Naselli-Flores. Spatial heterogeneity of spring phytoplankton in a large tropical reservoir: could mass effect homogenize the heterogeneity by species sorting? Hydrobiologia. 2018; 819 (1):109-122.

Chicago/Turabian Style

Yang Yang; Haiyu Niu; Lijuan Xiao; Qiuqi Lin; Bo-Ping Han; Luigi Naselli-Flores. 2018. "Spatial heterogeneity of spring phytoplankton in a large tropical reservoir: could mass effect homogenize the heterogeneity by species sorting?" Hydrobiologia 819, no. 1: 109-122.

Phytoplankton and biotic interactions
Published: 31 January 2018 in Hydrobiologia
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Mixotrophy is a combination of photosynthesis and direct access to organic carbon sources, mainly through osmotrophy or phagotrophy. This strategy is adopted by several, phylogenetically distinct, phytoplankton groups and is commonly occurring in marine, brackish and freshwater ecosystems. Traditionally, it has been put in relation to both scarcity of inorganic nutrients and poor light conditions. However, we observed blooms of the mixotrophic, toxic haptophyte Prymnesium parvum in different periods of the year and under variable resources availability. The analysis of a 6.5-year data set of phytoplankton weekly records from a Sicilian shallow lake (Biviere di Gela, south-eastern Sicily) allowed us to hypothesise that a depleted condition as regards inorganic nutrients is not the main fuel to the growth of P. parvum, neither this is due to light limitation. The results achieved show that an increased availability in suitable preys can stimulate the growth of this phagotrophic photoautotroph. Contemporarily, it was not found any clear environmental patterns to explain species dominance and growth patterns as related to inorganic nutrient availability. Moreover, it is shown that these organisms tend to monopolise resources when these become available irrespective of seasons, and under variable conditions as regards inorganic nutrient availability.

ACS Style

Luigi Naselli-Flores; Rossella Barone. Mixotrophic phytoplankton dynamics in a shallow Mediterranean water body: how to make a virtue out of necessity. Hydrobiologia 2018, 831, 33 -41.

AMA Style

Luigi Naselli-Flores, Rossella Barone. Mixotrophic phytoplankton dynamics in a shallow Mediterranean water body: how to make a virtue out of necessity. Hydrobiologia. 2018; 831 (1):33-41.

Chicago/Turabian Style

Luigi Naselli-Flores; Rossella Barone. 2018. "Mixotrophic phytoplankton dynamics in a shallow Mediterranean water body: how to make a virtue out of necessity." Hydrobiologia 831, no. 1: 33-41.

Editorial
Published: 11 January 2018 in Hydrobiologia
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Diego Fontaneto; Sidinei Magela Thomaz; Luigi Naselli-Flores; Koen Martens. Happy birthday Hydrobiologia! 70 years young and still growing…. Hydrobiologia 2018, 809, 1 -3.

AMA Style

Diego Fontaneto, Sidinei Magela Thomaz, Luigi Naselli-Flores, Koen Martens. Happy birthday Hydrobiologia! 70 years young and still growing…. Hydrobiologia. 2018; 809 (1):1-3.

Chicago/Turabian Style

Diego Fontaneto; Sidinei Magela Thomaz; Luigi Naselli-Flores; Koen Martens. 2018. "Happy birthday Hydrobiologia! 70 years young and still growing…." Hydrobiologia 809, no. 1: 1-3.

Primary research paper
Published: 16 November 2017 in Hydrobiologia
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Spatial patterns and β-diversity of phytoplankton assemblages depend on the relative importance of species dispersal capacity and species-sorting. Variability in species composition, composed by differences in species richness (nestedness) and/or species replacement, may be caused by niche availability and environmental selection. A field survey was carried out in Tibetan plateau on 38 lakes. Tibetan plateau lakes, located at high elevation, are harsh ecosystems characterized by low temperatures, low available nutrients, high UV amount, and strong salinity gradients. Only well-adapted species can survive in these environments. We therefore hypothesized that environmental filtering was the main factor determining phytoplankton assemblage structure in these lakes, and that species nestedness largely contributed to β-diversity. Spatial analysis showed that both environmental variables and broad-scale spatial variables accounted for the variation of phytoplankton assemblages. In particular, phytoplankton was mainly shaped by spatially structured environmental heterogeneity, which resulted in low α-diversity and high β-diversity. In contrast to our assumption, species turnover contributed to the majority of β-diversity of the studied assemblages. Local environments selected species with the corresponding stress-tolerant traits. Within the narrow range of available niches, environmental filtering of phytoplankton traits induced species’ replacement along environmental gradients.

ACS Style

Yang Yang; Ren Hu; Qiuqi Lin; Juzhi Hou; Yongqin Liu; Bo-Ping Han; Luigi Naselli-Flores. Spatial structure and β-diversity of phytoplankton in Tibetan Plateau lakes: nestedness or replacement? Hydrobiologia 2017, 808, 301 -314.

AMA Style

Yang Yang, Ren Hu, Qiuqi Lin, Juzhi Hou, Yongqin Liu, Bo-Ping Han, Luigi Naselli-Flores. Spatial structure and β-diversity of phytoplankton in Tibetan Plateau lakes: nestedness or replacement? Hydrobiologia. 2017; 808 (1):301-314.

Chicago/Turabian Style

Yang Yang; Ren Hu; Qiuqi Lin; Juzhi Hou; Yongqin Liu; Bo-Ping Han; Luigi Naselli-Flores. 2017. "Spatial structure and β-diversity of phytoplankton in Tibetan Plateau lakes: nestedness or replacement?" Hydrobiologia 808, no. 1: 301-314.

Challenges in anostracan research
Published: 06 September 2017 in Hydrobiologia
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ACS Style

Federico Marrone; D. Christopher Rogers; Paola Zarattini; Luigi Naselli-Flores. Preface: New challenges in anostracan research, a tribute to Graziella Mura. Hydrobiologia 2017, 801, 1 -4.

AMA Style

Federico Marrone, D. Christopher Rogers, Paola Zarattini, Luigi Naselli-Flores. Preface: New challenges in anostracan research, a tribute to Graziella Mura. Hydrobiologia. 2017; 801 (1):1-4.

Chicago/Turabian Style

Federico Marrone; D. Christopher Rogers; Paola Zarattini; Luigi Naselli-Flores. 2017. "Preface: New challenges in anostracan research, a tribute to Graziella Mura." Hydrobiologia 801, no. 1: 1-4.

Challenges in anostracan research
Published: 21 August 2017 in Hydrobiologia
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We present a summary of responses to our call among scientists working on Anostraca to commemorate the late Professor Graziella Mura, a pioneer of modern studies on this group of animals. Colleagues from all over the world promptly answered and contributed their works among which we selected the fourteen papers published in the Hydrobiologia Special Volume “New Challenges in anostracan research: a tribute to Graziella Mura”. Although Anostraca are widespread globally, they are among the least known taxonomic groups. Although some biogeographical data are available for some species and higher taxa, we are still far from a clear understanding of the phylogeny, ecology and biogeography of the order. The papers collected in this Special Volume are therefore intended to represent a step ahead to solve phylogenetic and ecological issues relative to this charming group of crustaceans.

ACS Style

Federico Marrone; D. Christopher Rogers; Paola Zarattini; Luigi Naselli-Flores. New challenges in anostracan research: old issues, new perspectives and hot topics. Hydrobiologia 2017, 801, 179 -185.

AMA Style

Federico Marrone, D. Christopher Rogers, Paola Zarattini, Luigi Naselli-Flores. New challenges in anostracan research: old issues, new perspectives and hot topics. Hydrobiologia. 2017; 801 (1):179-185.

Chicago/Turabian Style

Federico Marrone; D. Christopher Rogers; Paola Zarattini; Luigi Naselli-Flores. 2017. "New challenges in anostracan research: old issues, new perspectives and hot topics." Hydrobiologia 801, no. 1: 179-185.

Trends in aquatic ecology ii
Published: 19 July 2017 in Hydrobiologia
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ACS Style

Luigi Naselli-Flores; Koen Martens; Diego Fontaneto; Sidinei Magela Thomaz. Preface: Emerging trends in aquatic ecology II. Hydrobiologia 2017, 800, 1 -5.

AMA Style

Luigi Naselli-Flores, Koen Martens, Diego Fontaneto, Sidinei Magela Thomaz. Preface: Emerging trends in aquatic ecology II. Hydrobiologia. 2017; 800 (1):1-5.

Chicago/Turabian Style

Luigi Naselli-Flores; Koen Martens; Diego Fontaneto; Sidinei Magela Thomaz. 2017. "Preface: Emerging trends in aquatic ecology II." Hydrobiologia 800, no. 1: 1-5.