Assessment the short-term effects of wrack removal on supralittoral arthropods using the M-BACI design on Atlantic sandy beaches of Brazil and Spain

作者：Vieira Jenyffer Vierheller^*; Carmen Ruiz Delgado Ma; Jose Reyes Martinez Ma; Borzone Carlos Alberto; Asenjo Angelico; Emilio Sanchez Moyano Juan; Jose Garcia Garcia Francisco

来源：Marine Environmental Research, 2016, 119: 222-237.

DOI：10.1016/j.marenvres.2016.06.007

• Macroinvertebrates
• Wrack subsidies
• Disturbance
• Experimental design
• Supratidal
• Beaches
• Atlantic coast
• Ecosystem management

Wrack removal has been adopted indiscriminately, with no previous assessment of the ecological implications for sandy beach ecosystem. This study evaluated, through an M-BACI design, the effect of wrack removal on supralittoral arthropods on Atlantic sandy beaches receiving different types of wrack: mangrove propagules (Brazil), seagrasses and macroalgae (Spain). Impacted plots were contrasted with controls in 8 successive periods before and after experimental wrack removal. After the disturbance, drastic decreases in the densities of the amphipod Platorchestia monodi, coleopterans Cleridae, Nitidulidae and Phaleria testacea (Brazilian beaches) and amphipod Talitrus saltator (Spanish beaches) were detected in the impacted plots. The recovery patterns of arthropods might be related to wrack features (amount, composition, and degradation) combined with density and species-specific strategies (e.g. mobility, feeding preferences) in each Atlantic region. The temporary suppression of wrack and its associated fauna can have potential effects on the wrack-derived process and food-web structure on sandy beaches.

• 出版日期2016-8