0000000000452233

AUTHOR

Tiziana La Rosa

showing 3 related works from this author

Impact on the water column biogeochemistry of a Mediterranean mussel and fish farm

2002

We investigated and compared the impact of organic loads due to the biodeposition of mussel and fish farms on the water column of a coastal area of the Tyrrhenian Sea (Western Mediterranean). Physico-chemical data (including oxygen, nutrients, DOC and particulate organic matter), microbial variables (picoplankton and picophytoplankton density and biomass) and phytoplankton biomass (as chlorophyll-a) were determined on a monthly basis from March 1997 to February 1998. The results of this study indicate that both fish farm and mussel culture did not alter significantly dissolved inorganic phosphorus and chlorophyll-a values, while inorganic nitrogen concentrations were higher in mussel farm a…

Mediterranean musselChlorophyllSettore BIO/07 - EcologiaEnvironmental Engineeringanimal structuresNitrogenFish farmingPopulation DynamicsAquacultureAquaculture impactWater columnPhytoplanktonDissolved organic carbonMediterranean SeaAnimalsWater PollutantsBiomassPicoplanktonWaste Management and DisposalPicoplanktonWater Science and TechnologyCivil and Structural EngineeringEarth-Surface ProcessesBiomass (ecology)biologyEcologyEcological ModelingChlorophyll AfungiFishesPhosphorusFish farmMusselbiology.organism_classificationPlanktonPollutionBivalviaMussel and Fish farmEnvironmental chemistryMussel farmEnvironmental scienceDissolved organic carbonEnvironmental Monitoring
researchProduct

Benthic microbial indicators of fish farm impact in a coastal area of the Tyrrhenian Sea

2004

Abstract We studied the impact of organic loads due to the biodeposition of a fish farm in a non-impacted coastal area of the Tyrrhenian Sea (Western Mediterranean). Sediment chemistry and benthic microbial community were investigated from July 1997 to February 1998 on monthly basis at two stations: one was located under the fish farm, while the second was about 1 km away, and served as a reference site. The presence of the cage induced rapid changes in the benthic conditions: the sediments were rapidly (after 6 weeks) reduced. A significant accumulation of biopolymeric carbon was observed beneath the cage both 2 weeks after the initial cage deployment, on non-impacted sediments, and 5-7 mo…

Mediterranean climateSettore BIO/07 - Ecologiabusiness.industryEcologyFish farmingBacterial indicatormicrobial direct countsbacterial indicatorsSedimentfish farming impact; culturable bacteria; microbial direct counts; bacterial indicatorsMicrobial direct countAquatic ScienceBiologyFish farming impactFisheryMediterranean seaAquacultureMicrobial population biologyBenthic zoneCulturable bacteriaMediterranean SeabusinessCage
researchProduct

Meiofauna and benthic microbial biomass in a semi-enclosed mediterranean marine system (Stagnone di Marsala, Italy)

2004

Microbial and meiofaunal dynamics and their relationships with the biochemical composition of the sedimentary organic matter were investigated in a semi-enclosed marine system (Marsala lagoon, Western Sicily, Mediterranean Sea). Sediment samples were collected on a monthly basis from March 1996 to February 1997 in four stations located along a N–S transect characterized by different hydrodynamic regimes. Total sedimentary organic matter concentration ranged from 5.681.11 to 156.2812.63 mg g1, while the biopolymeric fraction of organic carbon (BPC, measured as sum of the lipids, carbohydrates and proteins) accounted for only a small fraction (24%) of total organic matter. Total meiofaunal de…

chemistry.chemical_classificationTotal organic carbonMediterranean climateSettore BIO/07 - EcologiaEcologyMeiobenthosMeiofaunaBenthic microbial communityMediterranean lagoonSedimentOceanographyMediterranean seachemistryBenthic zoneSedimentary organic matterGeneral Earth and Planetary SciencesSedimentary organic matterEnvironmental scienceOrganic matterEcology Evolution Behavior and SystematicsGeneral Environmental Science
researchProduct