The fate of organic matter sources in coastal environments: a comparison of three Mediterranean lagoons

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Abstract

Trophic processes in coastal lagoons arestrongly influenced by freshwater inputs and waterexchanges with the sea. In recent years, stable isotopeanalysis has become a widespread and reliable methodfor the examination of trophic structure over time andspace, also in complex ecosystems such as coastallagoons. Stable isotopes of carbon and nitrogen werestudied in primary producers and consumers toidentify organic matter source pools from terrestrial,benthic and pelagic environments and to characterisethe trophic structure in three Mediterranean coastallagoons (Lake Fusaro, the Lake of Sabaudia andStagnone di Marsala). The results highlighted thenegligible importance of terrestrial production tohigher trophic levels in all the ecosystems investigated.Consumer dependence on benthic and pelagicorganic matter showed high variability: overall macroalgaewere at the base of the food web in LakeFusaro and the Lake of Sabaudia, while mixed sources(seagrass detritus, epiphytes, macroalgae and sedimentaryorganic matter) appeared to be the majorbaseline food resource in the Stagnone di Marsala. We have found evidence for significant changes in thetrophic structure in these Mediterranean coastallagoons and such differences may be triggered bydifferential environmental features (e.g. freshwaterinputs and hydrodynamic regime).
Lingua originaleEnglish
pagine (da-a)67-79
Numero di pagine13
RivistaHydrobiologia
Volume2008
Stato di pubblicazionePublished - 2008

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Biological materials
Lakes
coastal zone
lagoon
trophic structure
organic matter
lakes
Ecosystems
lake
pelagic environment
benthic environment
freshwater input
ecosystems
ecosystem
epiphytes
terrestrial environment
coastal lagoon
seagrass
trophic level
hydrodynamics

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Environmental Science(all)
  • Pollution
  • Water Science and Technology
  • Aquatic Science

Cita questo

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title = "The fate of organic matter sources in coastal environments: a comparison of three Mediterranean lagoons",
abstract = "Trophic processes in coastal lagoons arestrongly influenced by freshwater inputs and waterexchanges with the sea. In recent years, stable isotopeanalysis has become a widespread and reliable methodfor the examination of trophic structure over time andspace, also in complex ecosystems such as coastallagoons. Stable isotopes of carbon and nitrogen werestudied in primary producers and consumers toidentify organic matter source pools from terrestrial,benthic and pelagic environments and to characterisethe trophic structure in three Mediterranean coastallagoons (Lake Fusaro, the Lake of Sabaudia andStagnone di Marsala). The results highlighted thenegligible importance of terrestrial production tohigher trophic levels in all the ecosystems investigated.Consumer dependence on benthic and pelagicorganic matter showed high variability: overall macroalgaewere at the base of the food web in LakeFusaro and the Lake of Sabaudia, while mixed sources(seagrass detritus, epiphytes, macroalgae and sedimentaryorganic matter) appeared to be the majorbaseline food resource in the Stagnone di Marsala. We have found evidence for significant changes in thetrophic structure in these Mediterranean coastallagoons and such differences may be triggered bydifferential environmental features (e.g. freshwaterinputs and hydrodynamic regime).",
keywords = "food webs, spatial variability, stable isotopes, transitional waters",
author = "Salvatrice Vizzini and Antonio Mazzola",
year = "2008",
language = "English",
volume = "2008",
pages = "67--79",
journal = "Hydrobiologia",
issn = "0018-8158",
publisher = "Springer Netherlands",

}

TY - JOUR

T1 - The fate of organic matter sources in coastal environments: a comparison of three Mediterranean lagoons

AU - Vizzini, Salvatrice

AU - Mazzola, Antonio

PY - 2008

Y1 - 2008

N2 - Trophic processes in coastal lagoons arestrongly influenced by freshwater inputs and waterexchanges with the sea. In recent years, stable isotopeanalysis has become a widespread and reliable methodfor the examination of trophic structure over time andspace, also in complex ecosystems such as coastallagoons. Stable isotopes of carbon and nitrogen werestudied in primary producers and consumers toidentify organic matter source pools from terrestrial,benthic and pelagic environments and to characterisethe trophic structure in three Mediterranean coastallagoons (Lake Fusaro, the Lake of Sabaudia andStagnone di Marsala). The results highlighted thenegligible importance of terrestrial production tohigher trophic levels in all the ecosystems investigated.Consumer dependence on benthic and pelagicorganic matter showed high variability: overall macroalgaewere at the base of the food web in LakeFusaro and the Lake of Sabaudia, while mixed sources(seagrass detritus, epiphytes, macroalgae and sedimentaryorganic matter) appeared to be the majorbaseline food resource in the Stagnone di Marsala. We have found evidence for significant changes in thetrophic structure in these Mediterranean coastallagoons and such differences may be triggered bydifferential environmental features (e.g. freshwaterinputs and hydrodynamic regime).

AB - Trophic processes in coastal lagoons arestrongly influenced by freshwater inputs and waterexchanges with the sea. In recent years, stable isotopeanalysis has become a widespread and reliable methodfor the examination of trophic structure over time andspace, also in complex ecosystems such as coastallagoons. Stable isotopes of carbon and nitrogen werestudied in primary producers and consumers toidentify organic matter source pools from terrestrial,benthic and pelagic environments and to characterisethe trophic structure in three Mediterranean coastallagoons (Lake Fusaro, the Lake of Sabaudia andStagnone di Marsala). The results highlighted thenegligible importance of terrestrial production tohigher trophic levels in all the ecosystems investigated.Consumer dependence on benthic and pelagicorganic matter showed high variability: overall macroalgaewere at the base of the food web in LakeFusaro and the Lake of Sabaudia, while mixed sources(seagrass detritus, epiphytes, macroalgae and sedimentaryorganic matter) appeared to be the majorbaseline food resource in the Stagnone di Marsala. We have found evidence for significant changes in thetrophic structure in these Mediterranean coastallagoons and such differences may be triggered bydifferential environmental features (e.g. freshwaterinputs and hydrodynamic regime).

KW - food webs

KW - spatial variability

KW - stable isotopes

KW - transitional waters

UR - http://hdl.handle.net/10447/42212

M3 - Article

VL - 2008

SP - 67

EP - 79

JO - Hydrobiologia

JF - Hydrobiologia

SN - 0018-8158

ER -