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Abstract: Coastal ecosystems are highly complex and driven by multiple environmental factors. To date we lack scientific evidence for the relative contribution of natural and anthropogenic drivers for the majority of marine habitats in order to adequately assess the role of different stressors across the European seas. Such relationship can be investigated by analysing the correlation between environmental variables and biotic patterns in multivariate space and taking into account non-linearities. Within the framework of the EMBOS (European Marine Biodiversity Observatory System) programme, hard bottom intertidal communities were sampled in a standardized way across European seas. Links between key natural and anthropogenic drivers and hard bottom communities were analysed using Boosted Regression Trees modelling. The study identified strong interregional variability and showed that patterns of hard bottom macroalgal and invertebrate communities were primarily a function of tidal regime, nutrient loading and water temperature (anomalies). The strength and shape of functional form relationships varied widely however among types of organisms (understorey algae composing mostly filamentous species, canopy-forming algae or sessile invertebrates) and aggregated community variables (cover or richness). Tidal regime significantly modulated the effect of nutrient load on the cover and richness of understorey algae and sessile invertebrates. In contrast, hydroclimate was more important for canopy algae and temperature anomalies and hydroclimate separately or interactively contributed to the observed patterns. The analyses also suggested that climate-induced shifts in weather patterns may result in the loss of algal richness and thereby in the loss of functional diversity in European hard bottom intertidal areas.
Congreso: European Marine Biology Symposium (50th : 2015 : Helgoland)
Editorial: Journal of the Marine Biological Association of the United Kingdom
Fecha de publicación: 01/05/2017
Nº de páginas: 14
Tipo de publicación: Comunicación a Congreso
Url de la publicación: https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/essence-of-the-patterns-of-cover-and-richness-of-intertidal-hard-bottom-communities-a-paneuropean-study/9DBCE02834F2CD347E6BE03198066E2D
VAN DER HARST, PIM
DAL BELLO, MARTINA
JOSE ANTONIO JUANES DE LA PEÑA
FERNANDES DE MATOS, VALENTINA KIRIENKO
XABIER GUINDA SALSAMENDI
PEDROTTI, MARIA LUIZA
MARIA ARACELI PUENTE TRUEBA
WESLAWSKI, JAN MARCIN