Journal of Marine Sciences / 2009 / Article / Tab 1

Research Article

Structural Changes in Macroinvertebrate Communities Associated with Reduction in the Management of Coastal Saltpans

Table 1

Description of type of saltpan, variables, and indices.

variablesymbolDescription

Type of saltpanType L-IPartly managed for salt production (maintenance of low water depths); saltpans:
Esteiro-Furado2: EF1, EF2, EF3
Passa4: PAS1, PAS2, PAS3
Praias-Sado1: PS1, PS2, PS3

Type L-IINonmanaged for salt production (oscillation from high water
depths to dry land); saltpans:
Atalaia2: AT1, AT2, AT3 (**)
Gala3: GAL1, GAL2, GAL3 (*)
Vaia1: VAI1, VAI2, VAI3, VAI4 (**)
Vasa-Sacos2: VS1, VS2, VS3 (**)
Vau-Nascente2; VN2, VN3, VN4 (*)
Vau-Poente2, VP1, VP2, VP3, VP4, VP5 (*)

Total abundance Total number of individuals of all groups

Relative abundance Abundance of group

Total biomass Dry weight of total individuals

Relative biomass Mean dry weight of group

Percentage of organic matter % of dry weight “loss in ignition” of group

Species richness Number of species

Margalef index

Shannon-Wienner

Pielou’s evenness

Simpson index ]

Legend: 1Sado estuary, 2Tejo estuary, 3Mondego estuary, 4Ria de Aveiro, (*) P. varians production, (**) no production = abandoned.

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