Exploring patterns of variation in amphipod assemblages at multiple spatial scales: natural variability versus coastal aquaculture effect
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Publication date
2013-01-03ISSN
1869-215X
Abstract
A 5-factor design survey was carried out to examine the spatial distribution at different scales of amphipod assemblages and sedimentary variables in soft bottoms adjacent to coastal aquaculture installations. Natural variability of sediment variables showed the highest values at the scales of sites (10s of meters) and locality (1 to 10 km), while the greatest component of variation of amphipod assemblages occurred among replicates (on the scale of meters). Regarding the influence of coastal aquaculture, the highest variability of the environmental variables was observed among the different fish farms. On sandy localities, the influence gradient of coastal aquaculture was determined by total free sulphides, whilst, in muddy localities, the main variable was δ15N. This study has important consequences for the establishment of a clear and effective methodology for studying and monitoring the impact of fish farming, highlighting the complicated establishment of a widespread pattern of effects by coastal aquaculture. The necessity to apply a high replication effort at several spatial scales, especially at the scales of meters and 10s of meters, to increase the precision of estimates of assemblage composition should be taken into consideration
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
639 - Hunting. Fishing. Fish breeding
Pages
13
Publisher
Inter Research
Is part of
Aquaculture Environment Interactions (AEI)
Citation
Fernandez-Gonzalez, V, F Aguado-Giménez, JI Gairin, and P Sanchez-Jerez. 2013. "Exploring Patterns Of Variation In Amphipod Assemblages At Multiple Spatial Scales: Natural Variability Versus Coastal Aquaculture Effect". Aquaculture Environment Interactions 3 (2): 93-105. doi:10.3354/aei00054.
Grant agreement number
MAPAMA/JACUMAR/ /ES/Selección de indicadores, determinación de valores de referencia, diseño de programas y protocolos de métodos y medidas para estudios ambientales en acuicultura marina/
Program
Aqüicultura
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2646]
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/