Invasion

Invasion Description

1st Record: Puerto Ayora, Isla Santa Cruz/Galapgos Islabd/Pacific Ocean (27 February 2015, Calder et al. 2019, collected by K. Larson from SERC fouling plates)

Records published by Fraser (1938) from the Galapagos, as Plumularia alternat refer to an undescribed species (Schuchert 1997; Calder 2019).

Halopteri alternata was abundant at Puerto Ayora in 2015-2016, but was not collected in 2018 (Calder et al. 2021). Local year-to-year fluctuations are common in foulin communties.

Geographic Extent

Puerto Ayora, Isla Santa Cruz/Galapgos Islabd/Pacific Ocean (Calder et al. 2019, 27 February 2015, from SERC fouling plates, many more samples in 2015--2016).