Search results for "ponds"

showing 10 items of 49 documents

Co-existing with the alien: evidence for environmental control on trophic interactions between a native (Atherina boyeri) and a non-indigenous fish s…

2022

Biological invasions are a widespread problem worldwide, as invasive non-indigenous species (NIS) may affect native populations through direct (e. g., predation) or indirect (e.g., competition) trophic interactions, leading to changes in the food web structure. The trophic relationships of the invasive eastern mosquitofish Gambusia holbrooki and the native big-scale sand smelt Atherina boyeri coexisting in three Mediterranean coastal ponds characterized by different trophic statuses (from oligotrophic to hypereutrophic) were assessed in spring through isotopic niche analysis and Bayesian mixing models. The two fish relied on the distinctive trophic pathways in the different ponds, with the …

Settore BIO/07 - EcologiaEcologybiological invasion alien species stable isotopes mosquitofish sand smelt coastal pondsEcology Evolution Behavior and Systematics
researchProduct

An account on the non-malacostracan crustacean fauna from the inland waters of Crete, Greece, with the synonymization of Arctodiaptomus piliger Brehm…

2019

The Mediterranean bioregion is widely recognised as a biodiversity hotspot and its inland waters are among the species richest ecosystems of the northern hemisphere. However, the extent of such biodiversity has not been totally unravelled, especially in the Mediterranean islands. Here we present a first account of the crustaceans inhabiting 21 permanent and temporary ponds in Crete, the largest of the Greek islands and the fifth largest island in the Mediterranean Sea. The ponds, sampled between 2009 and 2018, cover all the island surface even though their number cannot be considered exhaustive to represent the entire non-malacostracan fauna of the island. Nevertheless, 46 taxa were identif…

Settore BIO/07 - EcologiaMediterranean climateFaunaOstracodaSettore BIO/05 - ZoologiaTraitement de potabilisation de l'eauTemporary pondsAquatic ScienceMediterranean seaMediterranean biodiversityTemporary pondOcéanographie biologiqueCalanoidaCalanoidaWater Science and TechnologyBranchiopodaEcologieEcologybiologyEcologybiology.organism_classificationTechnologie de l'environnement contrôle de la pollutionTaxonGeographyTraitement des eaux résiduairesArctodiaptomusMediterranean IslandsChirocephalusLimnetica
researchProduct

The role of spatial and environmental factors as determinants of large branchiopod distribution in Tunisian temporary ponds

2015

Settore BIO/07 - EcologiaSettore BIO/05 - ZoologiaAnostraca Notostraca Spinicaudata Branchiopoda Temporary ponds Crustacea
researchProduct

Crustacean dynamics in two argillotrophic, temporary ponds (North-Western Sicily, Italy)

2004

Settore BIO/07 - EcologiaTemporary ponds clay Branchiopoda Sicily population dynamicsSettore BIO/05 - Zoologia
researchProduct

Sicilian Temporary Ponds: An Overview of the Composition and Affinities of their Crustacean Biota

2009

Available data on Sicilian entomostracans allowed an initial characterization of the freshwater crustacean biota of the island and to formulate some hypotheses on its origin.The absence of supra-specific endemic taxa and the current regional distriburion of the investigated species suggest a late Pleistocene colonisation of the island by temperate taxa with a northern affinity, currently confined to the coolest areas of the island, followed by a Holocene arrival of thermophilous species coming from the Maghreb, which is still in progress. The importance of Sicily as a "crossroad" for the faunas of the circum-Mediterranean countries is thus confirmed.Unfortunately, and in spite of the EU dir…

Sicily biogeography Mediterranean temporary ponds Branchiopoda Copepoda
researchProduct

Linderiella baetica Alonso & Garcia-de-Lomas 2009 (Crustacea, Branchiopoda, Anostraca): On the verge of extinction?

2016

The province of Cadiz (South of Spain) hosts the only known locality in the world of Linderiella baetica Alonso & Garcia-de-Lomas 2009 (Anostraca). In this paper, the geographical distribution of the species based on published sampling data focused on large branchiopods and temporary pools in Andalusia and the entire Iberian Peninsula is assessed. The current situation is summarized based on the threats to their survival, which are mainly related to habitat alteration. In the Iberian Peninsula, at least 1,648 bodies of water (about 720 in Andalusia) have been explored. Prevalence data suggest that L. baetica is a rare species (localities with presence / sample locations = 6.07 . 10-4). The …

SpainCadizconservationSettore BIO/05 - ZoologiaAnostracathreatprotectiontemporary ponds; threat; Anostraca; conservation; protection; Cadiz; Spaintemporary pond
researchProduct

Narrativa dei Caraibi nel nuovo millennio

2020

L’etichetta “Letterature franco-caraibica” utilizzata, per convenzione, dalla critica per indicare unitariamente la produzione letteraria in lingua francese della regione centrale del Continente americano è assai impropria. La regione dei Caraibi abbraccia, infatti, sia alcune delle isole dell’arcipelago delle Piccole Antille (Martinica, Guadalupa), sia l’isola di Haïti, che fa parte delle Grandi Antille, che la Guiana incastonata sulla costa orientale dell’America meridionale. Pur nella diversità dei movimenti ideologici e degli avvenimenti storici che si sono succeduti nella regione, le opere letterarie degli scrittori caraibici francofoni, nel loro insieme, hanno oscillato, e continuano …

The definition "Franco-Caribbean Literature" used by convention from the critique to indicate all the literary production in French of the central region of the American continent is very improper. The Caribbean region includes in fact the islands of Martinique Guadeloupe Haïti and the Guiana. Despite the diversity of ideological movements and historical events that took place in these countries the literary works of the Caribbean writers have fluctuated and continue to oscillate between two tendencies: that of rooting in tradition and that of escape from it. The writers show themselves open to comparison and dialogue with other literary and cultural traditions in order to create a narrative form that corresponds to the many inheritances of those composite populations. Here the cultural syncretism that has been created allows to recognize a common identity in the name of all that the West wanted to extinguish. The common denominator seems to be inverted in the contradictory result of courageous but dangerous encounters of curiosities that can lead to conflicts to exclusions.
researchProduct

Caraibi: un "archipel inachevé"

2018

L’etichetta “Letterature franco-caraibica” utilizzata, per convenzione, dalla critica per indicare unitariamente la produzione letteraria in lingua francese della regione centrale del Continente americano è assai impropria. La regione dei Caraibi abbraccia, infatti, sia alcune delle isole dell’arcipelago delle Piccole Antille (Martinica, Guadalupa), sia l’isola di Haïti, che fa parte delle Grandi Antille, che la Guiana incastonata sulla costa orientale dell’America meridionale. Pur nella diversità dei movimenti ideologici e degli avvenimenti storici che si sono succeduti nella regione, le opere letterarie degli scrittori caraibici francofoni, nel loro insieme, hanno oscillato, e continuano …

The definition "Franco-Caribbean Literature" used by convention from the critique to indicate all the literary production in French of the central region of the American continent is very improper. The Caribbean region includes in fact the islands of Martinique Guadeloupe Haïti and the Guiana. Despite the diversity of ideological movements and historical events that took place in these countries the literary works of the Caribbean writers have fluctuated and continue to oscillate between two tendencies: that of rooting in tradition and that of escape from it. The writers show themselves open to comparison and dialogue with other literary and cultural traditions in order to create a narrative form that corresponds to the many inheritances of those composite populations. Here the cultural syncretism that has been created allows to recognize a common identity in the name of all that the West wanted to extinguish. The common denominator seems to be inverted in the contradictory result of courageous but dangerous encounters of curiosities that can lead to conflicts to exclusions.Settore L-FIL-LET/14 - Critica Letteraria E Letterature Comparate
researchProduct

Distribution, ecology and conservation survey on Trifolium michelianum Savi (Fabaceae) in Sicily (Italy)

2013

We report the identification of four residual stations for Trifolium michelianum Savi (Fabaceae) in Sicily, whereas the species was documented to be extinct at the Gorgo Cerro station (western Sicily), the only locality previously reported in the literature. In addition to an update on the distribution of the species, a survey on the new Sicilian populations led to their biological, ecological and phytosociological characterization, as well as to an assessment of the risk factors. The species, here relegated to the limit of its distribution area, occurs in particularly sensitive and vulnerable environments, such as the “Mediterranean temporary ponds”, considered “priority” by the Council Di…

Trifolium michelianumMediterranean climateConservation of nature critically endangered species “Mediterranean temporary ponds (3270)” phytosociology Sicilian floraPhytosociologyEcologybusiness.industryEcology (disciplines)Distribution (economics)Plant ScienceFabaceaeBiologylanguage.human_languageCritically endangeredSettore BIO/03 - Botanica Ambientale E ApplicatalanguagebusinessSicilianEcology Evolution Behavior and Systematics
researchProduct

Comprehensive dataset of shotgun metagenomes from oxygen stratified freshwater lakes and ponds

2021

Stratified lakes and ponds featuring steep oxygen gradients are significant net sources of greenhouse gases and hotspots in the carbon cycle. Despite their significant biogeochemical roles, the microbial communities, especially in the oxygen depleted compartments, are poorly known. Here, we present a comprehensive dataset including 267 shotgun metagenomes from 41 stratified lakes and ponds mainly located in the boreal and subarctic regions, but also including one tropical reservoir and one temperate lake. For most lakes and ponds, the data includes a vertical sample set spanning from the oxic surface to the anoxic bottom layer. The majority of the samples were collected during the open wate…

Water microbiologyData DescriptorMicrobial ecologyNutrientPhylogenyTotal organic carbonlammet0303 health sciencesEcologyMicrobiotahiilen kiertoQgenomiikkaMiljövetenskapSubarctic climateAnoxic waters6. Clean waterComputer Science ApplicationsOceanographydataFreshwater ecologyStatistics Probability and UncertaintyInformation SystemsStatistics and ProbabilityBiogeochemical cycleClimate ChangeScienceLibrary and Information SciencesjärvetCarbon CycleEducationCarbon cycleGreenhouse Gases03 medical and health sciencesparasitic diseasesEcosystem14. Life underwaterPonds030304 developmental biologyEkologiBacteria030306 microbiology15. Life on landArchaeaOxygenmikrobiekologiaLakesmikrobistoBoreal13. Climate actionMetagenomeEnvironmental scienceMetagenomicsEnvironmental SciencesScientific Data
researchProduct