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Título : Natural variability and reference conditions: setting type-specific classification boundaries for lagoon macroinvertebrates in the Mediterranean and Black Seas
Autor : Basset, Alberto; Barbone, Enrico; Borja, Angel; Elliott, Michael; Jona-Lasinio, Giovanna; Marques, Joao Carlos; Mazik, Krysia; Muxika, Inigo; Neto, Joao Magalhaes; Reizopoulou, Sofia; Teixeira, Heliana; Rosati, Ilaria
Citación : HYDROBIOLOGIA, 2013, 704, 325-345
Resumen : The ecological status classification of aquatic ecosystems using biological indices requires a number of steps, including the description and standardisation of the indices' natural variability. Here, we address this point with reference to selected Mediterranean and Black Sea lagoons, using benthic macroinvertebrates in order to: (i) explore the drivers and extent of the indices' natural variability; (ii) evaluate lagoon type-specific reference conditions and related classification boundaries; (iii) test the classification strength of the derived boundaries; and, (iv) propose recommendations for optimising ecological status classification. The considered indices showed large variation between and within the reference lagoons on both spatial and temporal scales. Among the tested descriptors of the proposed lagoon typologies, surface area, confinement and water salinity were found to be significant sources of index variability. Type-specific reference conditions and classification boundaries were then defined, improving the accuracy of ecological status assessment. At the lagoon level, classification strength increased up to 100 \% in reference (least disturbed) lagoons and up to 83 \% in an independent validation set of highly disturbed sites. Nevertheless, a certain degree of uncertainty was still found to affect classification at the study site level. Recommendations concerning the application of the various approaches to type-specific reference conditions and classification boundaries are given.
Palabras clave : Reference conditions; Typology; Natural variability; Mediterranean and Black Sea lagoons; Multimetric indices; Benthic macroinvertebrates; ECOLOGICAL QUALITY STATUS; TRANSITIONAL WATERS; BENTHIC MACROINVERTEBRATES; ESTUARINE QUALITY; COASTAL LAGOONS; M-AMBI; INDEXES; IMPLEMENTATION; ECOSYSTEMS; INDICATORS
Fecha de publicación : 2013
Editorial : SPRINGER
Tipo de documento: Article
Idioma: Inglés
DOI: 10.1007/s10750-012-1273-z
URI : http://dspace.azti.es/handle/24689/550
ISSN : 0018-8158
Patrocinador: INTERREG IIIB CADSES TWReferenceNet
MIUR
WISER (Water bodies in Europe: Integrative Systems to assess Ecological status and Recovery)
European Union [226273]
Aparece en las tipos de publicación: Artículos científicos



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