Applicazione del LOICZmodello alla Sacca di Goro laguna

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  Observational networks of Southern European
Coastal Lagoons Pierluigi Viaroli, Gianmarco
Giordani, José Manuel Zaldivar, Nicholas Murray
Giorgios Tsirtsis, Manuela Falcao, Julia
Martinez, Thang Do Chi LaguNet observational
network of Italian lagoons (April 2002) Elnet
observational network of Greek lagoons (March
2004) Planet observational network of
Portuguese lagoons (September 2004) RedMarismas
observational network of Spanish lagoons (March
2005) PNEC Programme National Ecologie
Cotiere, France (2003-2006)
UNESCO-MAB /MARS-MARBEF expert meeting on
 Ecological science and biosphere reserves to
help nature conservation practitioners and
society to set priorities in coastal and marine
areas, ROSTE Venice, 12-14 May 2005
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The idea of a network of coastal lagoons was born
in Athens (February 2001) during the LOICZ
workshop on C, N and P budgets in the
Mediterranean and Black seas (LOICZ Report
Studies 19, 2001). The decision to organise the
Italian Network (LaguNet) was taken by a group of
lagoon scientists Viaroli, Giordani, Murray,
Zaldivar, Barbanti and Guerzoni

• Nowadays LaguNet is an informal scientific
  observational network of 32 Italian research
  groups, with ca. 150 scientists and students
  which aims
• to support and encourage co-operation of research
  groups studying lagoons, wetlands and salt mash
  systems situated along the Italian coast
• to promote an agreed common approach to
  biogeochemical, ecological and bio-economical
  modelling of these transitional ecosystems that
  can provide support to management or policy
  applications
• to develop a capacity building

http//www.dsa.unipr.it/lagunet
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• LaguNet is self-sustained and activity (project)/
  based
• Short term objective
• to apply the LOICZ Biogeochemical Model to
  coastal lagoons
• Long term objectives
• to contribute to the WFD transitional waters in
  Southern Europe
• to contribute to the Coastal Module of the Global
  Terrestrial Observing System (C-GTOS)
• to developing cooperation and projects at
  national and European level in the Mediterranean
  region

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Geographical distribution of the 32 research
groups collaborating in LaguNet
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Geographical distribution of the 20 LaguNet sites
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1st LaguNet activities April 2002-October
2003 Leaders G. Giordani, P. Viaroli, N. Murray,
J.M. Zaldivar Evaluation of fluxes and derived
ecosystem functions in the transition zones along
the Italian coast with the LOICZ biogeochemical
model approach (LOICZ-BM)

• LOICZ-BM
• Ability to work with secondary data
• Minimal data requirements
• Widely applicable, uniform methodology
• Sufficiently Robust
• Informative about processes of CNP fluxes

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The LOICZ biogeochemical model is based on mass
balance of materials
Materials with conservative behaviour (
?(sources-sinks) 0 ) are used to estimate the
mass movements of water Materials with
non-conservative behaviour ( ?(sources-sinks) ? 0
) are used to estimate internal transformations
and important ecosystem processes such as net
metabolism (i.e. the difference between
production and respiration) or the difference in
the rates of nitrogen fixation and
denitrification (Nfix-denitr)
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2 boxes model
2 layers model
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LaguNet budgeting

• 20 sites
• 22 systems
• 94 flux estimates

DIP DIN budgets
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LaguNet ecosystems
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Results of the LOICZ-BM water residence time
Varano
Valle Smarlacca
Marinello
Venice
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Nutrient loads
N/Pgt20 ? 18 systems 10ltN/Plt20 ? 3 systems
(Marinello FP V and Gulf of Genova) N/Plt10 ? 1
system (SEna Arrubia)
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DDIP Dissolved Inorganic Phosphorus
net source
balanced ( 10µmol m-2 d-1)
net sink
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(sources-sinks) of DIP in relation to DIP loading
Port of Genoa M.O.T.
SEna Arrubia
Gulf of Genoa
DDIP range indicated by LOICZ (79 selected
sites) -0.60 ?0.45 mmol m-2 d-1
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DDIN Dissolved Inorganic Nitrogen
net source
in balance ( 0.5 mmol m-2 d-1)
net sink
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(sources-sinks) of DIN in relation to DIN loading
Sacca di Goro 97
Piallassa Baiona
Torre Guaceto
Sacca di Goro 92
DDIN range indicated by LOICZ (79 selected
sites) -40 ? 9.2 mmol m-2 d-1
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World-wide LOICZ results
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Net Ecosystem metabolism (p-r) vs DIP loads
SEna Arrubia
Piallassa Baiona
Sacca di Goro 97
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Net Ecosystem metabolism (p-r) vs DIN loads
SEna Arrubia 94
Acquatina
Piallassa Baiona
Torre Guaceto
Sacca di Goro 97
No clear relations with DIN inputs
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(Nfix-denitr) vs DIN loads
(Nfix-denitr) DDIN (NP) DDIP DDIN -
DDINexp
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Giordani G., P. Viaroli, D. P. Swaney, C. N.
Murray, J. M. Zaldivar and J. J. Marshall
Crossland (eds), 2005. Nutrient fluxes in
transition zones of the Italian Coast. LOICZ
REPORTS STUDIES No. 28. http//www.dsa.unipr.it
/lagunet
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2nd LaguNet Activity coastal lagoon
typology Typology in Mediterranean transitional
waters new challenges and perspectives A.Basset,
L.Sabetta, A. Fonnesu, D. Mouillot, T. Do Chi, P.
Viaroli, G. Giordani S. Reizopoulou, M. Abbiati,
G. C. Carrada Some notes about Italian Coastal
Lagoon typology in the light of WFD D.
Tagliapietra, A.V. Ghirardini
Climate Morphometry Tidal range Freshwater
influence Geology Biogeochemistry
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3rd LaguNet Activity BenthOC Investigation of
relationships between macrobenthos communities
and sedimentary organic matter content in
transitional waters soft sediments along the
Italian coast to develop benthic indicators of
environmental quality (leaders P. Magni D.
Tagliapietra)
modified from Pearson Rosemberg (1978), Hyland
et al. (2000), de Wit et al. (2001) Viaroli et
al. (2004)

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• MAIN ACTIVITIES OF LAGUNET
• February 2001, Athens LOICZ workshop on C, N
  and P budgets in the Mediterranean and Black seas
  (LOICZ Report Studies 19, 2001). Decision to
  organise Lagunet (Viaroli, Giordani, Murray and
  Zaldivar)
• 15-16 April 2002, Venice Workshop for launching
  the LaguNet Network. Presentation of the 1st
  LaguNet activity on LOICZ biogeochemical budgets
  in 22 Italian coastal lagoons
• October 2003-October 2004 Participation in the
  implementation of the Coastal Module of the
  Global Terrestrial Observing System (GTOS)
  (www.fao.org/gtos)
• 11 November 2003, Ferrara LaguNet Meeting on
  Typology and monitoring of transistional waters
  with respect to the WFD
• February 2004. Presentation of the second LaguNet
  activitya Web Forum on Coastal lagoon typology
• 17-19 June 2004, Napoli. Workshop of LaguNet on
  major challenges to bridge basic ecology to
  applications publication of view points on
  coastal typology in Aquatic Conservation
  Freshwater and Marine Ecosystems
• 8-9 October 2004, International Marine Center
  (Oristano Italy), IOC-UNESCO Workshop on
  Indicators of Stress in the Marine Benthos .
  Launch of the 3rd LaguNet activity on
  Sedimentary organic matter and benthic
  communities in the Italian Coastal lagoons
• January 2005 Publication of the results of the
  biogeochemical budget of 22 Italian lagoons -
  Giordani G., Viaroli P., Swaney D.P., Murray
  C.N., Zaldivar J.M., Marshall Crossland (eds),
  2005. Nutrient fluxes in transition zones of the
  Italian Coast. LOICZ Report Studies 28, 125 pp.
• February 2005 LaguNet is included as a regional
  project in the LOICZ programme (http//www.loicz.o
  rg/loicz_nl/de4487499c8cff52a6f80cb542b90481.php)

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LaguNet has been used as a template for
developing national networks in the Mediterranean
region The capacity building was supported by
the European project DITTY Development of an
Information Technology Tool for the Management of
European Southern Lagoons under the influence of
river-basin runoff (2003-2006). A project funded
by the European Community under the Energy,
Environment and Sustainable Development
Programme (5th FP)
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PlaNet 21 September 2004
Development of National Networks with the support
of the DITTY project
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• Perspectives
• SEANet Southern European Arc Network
  (Mediterranean, Lusitanian, Black Sea regions)
  leaders N. Murray P. Viaroli
• to be discussed during the LOICZ II Inaugural
  Open Science Meeting, Egmond am Zee, Netherlands,
  27-29 June 2005
• -Based on local experts
• Common and shared approaches/actions
• Environmental quality criteria
• Sustainability of exploitation
• Delivery systems relationships among watershed,
  lagoons (transition ecosystems?) and the adjacent
  ocean