0000000000300379

AUTHOR

Alessandro Ludovisi

showing 3 related works from this author

Beyond the mean: A comparison of trace- and macroelement correlation profiles of two lacustrine populations of the crayfish Procambarus clarkii

2018

In invertebrate biomonitors of chemical pollution, emphasis has been generally given to mean accumulation patterns and how they reflect varying environmental levels of contamination. Intra-population variability, and how it relates with individual phenotypic traits, has received less attention. Here, a set of analytes including trace elements (B, Ba, Cd, Cr, Cu, Fe, Li, Mn, Ni, Pb, Sr, V, and Zn), macroelements (C, Ca, K, Mg, N, Na), and carbon and nitrogen stable isotopes (δ13C and δ15N) was measured in two populations of the crayfish Procambarus clarkii from Lake Trasimeno and Lake Bolsena (Central Italy). The influence of location, sex, body size, and condition factor was assessed; in ad…

Settore BIO/07 - Ecologia0106 biological sciencesEnvironmental EngineeringInter-individual variabilityAstacoidea010501 environmental sciences01 natural sciencesRed swamp crayfishMetals HeavyAnimalsEnvironmental ChemistryWaste Management and DisposalStable isotopes0105 earth and related environmental sciencesTrophic levelProcambarus clarkiiDetritusδ13CbiologyChemistry010604 marine biology & hydrobiologyδ15Nbiology.organism_classificationCrayfishStable isotopePollutionTrace ElementsItalyBenthic zoneIndicator speciesEnvironmental chemistryBiomonitoringBiomonitoring; Elemental fingerprint; Inter-individual variability; Red swamp crayfish; Stable isotopes; Environmental Engineering; Environmental Chemistry; Waste Management and Disposal; PollutionElemental fingerprintWater Pollutants ChemicalEnvironmental MonitoringScience of The Total Environment
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Stable isotope analysis reveals trophic segregation between the invasive zebra mussel Dreissena polymorpha and the native duck mussel Anodonta anatin…

2022

AbstractNon-indigenous freshwater bivalves negatively affect invaded ecosystems through different mechanisms, including inter-specific competition for trophic resources. Here, we investigated in Lake Trasimeno (Central Italy) the diet of the invasive Dreissena polymorpha and the native Anodonta anatina. δ15N and δ13C stable isotopes were measured in winter and summer in bivalves, phytoplankton, and sedimentary organic matter (SOM); the relative dietary contributions of the two resources were determined using Bayesian mixing models. To elucidate the different carbon and nitrogen pools characterizing the study site, isotopic analyses were extended to zooplankton and to representatives of the …

Mixing modelsBiological invasions Carbon dynamics Lentic systems Mixing models Trophic competitionCarbon dynamicsBiological invasions Trophic competition δ13C and δ15N Mixing models Carbon dynamics Lentic systemsLentic systemsBiological invasionsAquatic ScienceTrophic competition
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Ontogenetic shift in the trophic role of the invasive killer shrimp Dikerogammarus villosus: a stable isotope study

2021

AbstractThe introduction of the amphipod Dikerogammarus villosus in European fresh waters is to date recognized as a threat to the integrity of invaded communities. Predation by D. villosus on native benthic invertebrates is assumed as the key determinant of its ecological impact, yet available information describe the species as a primary consumer as well as a carnivore depending on local conditions. Here, we assessed the trophic position (TP) of D. villosus in Lake Trasimeno, a recently invaded lentic system in central Italy, using the CN isotopic signatures of individuals captured in winter spanning two orders of magnitude in body size. TP estimations were compared with those characteriz…

0106 biological sciencesEcologybiologyEcologyConsumer010604 marine biology & hydrobiologymedia_common.quotation_subjectLake ecosystemDikerogammarus villosusErpobdella octoculataBody sizeTrophic positionbiology.organism_classification010603 evolutionary biology01 natural sciencesCompetition (biology)PredationBody size Killer shrimp Ontogeny Stable isotopes Trophic positionKiller shrimpOntogenyEcology Evolution Behavior and SystematicsTrophic levelInvertebratemedia_commonStable isotopes
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