Propagule composition regulates the success of an invasive seaweed across a heterogeneous seascape

Fabio Bulleri, Ezequiel M. Marzinelli, Sofie Voerman & Paul Gribben
1. Propagule pressure is acknowledged as a key determinant of invasion success. Nonetheless, the role of morphological or physiological attributes of propagules (i.e., their quality) in regulating invader establishment has been little explored. In particular, no study has investigated how the presence of propagules differing in quality within an inoculum influences establishment across heterogeneous landscapes. 2. We experimentally tested the hypothesis that the quality (+Fronds+Rhizoids; +Fronds–Rhizoids; –Fronds+Rhizoids) and the diversity (1, 2, 3 fragment types)...
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