Figure 1d from: Liversage K, Byrne M (2018) A note on life-history traits and conservation concerns for viviparous Australian seastars (Parvulastra parvivipara and P. vivipara). Research Ideas and Outcomes 4: e29766. https://doi.org/10.3897/rio.4.e29766

• Main Authors: Liversage, Kiran, Byrne, Maria
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2018
• Subjects: Animalia; Echinodermata; Asteroidea; Valvatida; Asterinidae; Parvulastra; Parvulastra vivipara; Intertidal boulder-field; boulder reef; rock pool; Crassostrea gigas; marine conservation
• Online Access: https://doi.org/10.3897/rio.4.e29766.figure1d

Figure 1d Photographs from P. parvivipara and P. vivipara habitat, and graph of P. vivipara population trends. - Trends from the largest P. vivipara population at Pitt Water. Each point is the mean of adult densities from numerous sampling events over each 2 year period. During 1976-83 a fixed 1 m2 quadrat was sampled (Prestedge 1998) while a different method was used from 2001-04 involving 25 m transects being sampled across the site (Ecomarine 2014). Other survey types (timed-search) have also found large population declines (see section 2.).