Ecological profiles as a novel tool for environmental monitoring of Chilean aquaculture activities (Perles ecológicos como una herramienta innovadora para el monitoreo ambiental de las actividades acuícolas en Chile)

Carballeira, Carlos, Ditchburn, Jae-Llane, Giglio, Susana, Rojas, Pablo and Silva, Claudio (2019) Ecological profiles as a novel tool for environmental monitoring of Chilean aquaculture activities (Perles ecológicos como una herramienta innovadora para el monitoreo ambiental de las actividades acuícolas en Chile). In: 39th Congress of Marine Science (CCMAR 2019), 27-31 May 2019, Iquique, Chile. (Unpublished)

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Abstract

The Water Framework Directive requires the determination of the ecological status of water bodies and the evaluation of the environmental impact dened by their values as part of its environmental monitoring plans (EMPs). While the selection of indicator species assists EMPs of impacted areas, there is currently no standard protocol for its determination. The setting of ecological profiles is based on the absence/presence of families with the distance to pollution focuses and diversity indices correlated with physical-chemical variables. This eases the selection of indicator species and determination of ranges from variables dening its respective ecological status. Once ecological profiles have been established, a simple determination of physical-chemical parameters will predict the ecological status of sampling points, thus avoiding tedious taxonomic studies. This method was applied to 489 sediment samples from the whole Chilean coast by relating ecological indices to the presence of 29 Polychaeta families with values from physical-chemical variables (pH, Eh, TOM, sulphides and granulometry). Ecological profiles were created with the presence/absence of individuals and the maximum and average values of ecological indices and frequency of families at every class of physical- chemical variables. Profiles created with average values showed more signicance. Intermediate values from physical-chemical variables represented higher biodiversity compared to extreme values. Several families (Ampharetidae, Capitellidae, Cirratulidae, Cossuridae and Siglionidae) were found to be associated with pollution conditions (resistant species) while others (Syllidae and Opheliidae) showed the opposite (sensitive species).

Item Type: Conference or Workshop Item (Poster)
Departments: STEM
Depositing User: Anna Lupton
Date Deposited: 06 Jun 2019 11:10
Last Modified: 14 Jun 2019 17:48
URI: http://insight.cumbria.ac.uk/id/eprint/4807

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