|
|
|
|
|
| Munari, C; Modugno, S; Ghion, F; Castaldelli, G; Fano, Ea; Rossi, R; Mistri, M. |
| The macrobenthic community structure of the Valli di Comacchio (northern Italy) was described in order to assess the ecological conditions of the main basins through 2001. In addition, the biotic data set gathered in 1997-1998 was compared to achieve an estimation of the eventual recovery of the lagoonal benthic assemblages. Four permanent sites (PI, M4, M5 and M6), located along a gradient of sediment texture and confinement, and representing four different areas of the lagoon, were sampled quarterly in 2001 for macrofauna and sedimentary variables (organic content, phytobenthic chlorophyll-a, depth of the redox potential discontinuity layer), and fortnightly for water variables (temperature, salinity, dissolved oxygen and planktonic chlorophyll-a). Water... |
| Tipo: Text |
Palavras-chave: Macrobenthos; Valli; Mer Adriatique; Restauration; Macrobenthos; Valli; Adriatic Sea; Recovery. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00322/43286/43021.pdf |
| |
|
|
| Gatto, M; Laniado, E; Rossi, R. |
| The traditional management of eels in the Valli di Comacchio lagoon consists of harvesting silver migrating eels at the sluice gates. The paper investigates the possibility of improvements by allowing also the capture of yellow growing eels. First a mathematical model for the population dynamics is set up and the relevant biological parameters are estimated from the available data. Then the model is used as a tool for exploring different management alternatives and their impact on two performance indices: the total harvested biomass and the gross economic return. A sensitivity analysis with respect to the estimated biological parameters is also performed. The conclusion is drawn that both indices can be increased by catching a certain quota of yellow eels. |
| Tipo: Text |
|
| Ano: 1982 |
URL: http://archimer.ifremer.fr/doc/00246/35738/34246.pdf |
| |
|
|
|
