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Table 5 Criteria used for the determination of size/age of most abundant macrobenthos found in experimental and natural sediments

From: Effects of patch size and position above the substratum during early succession of subtidal soft-bottom communities

Taxon Length Criteria
E. gracilipes Distance from the tip of the rostrum to the posterior dorsal border of the head. We used this measurement since it is closely correlated with body length (y = 4.868x + 0.376; R 2 = 0.85) because not all amphipods conserved their curved shape after fixation. The function was fitted using measures of those amphipods of all sizes that conserved their curved shape. Measurements were made using calibrated eyepieces on a dissected microscope Adults were determined based on the size of ovigerous females. All individuals below the adult size (3 mm body length) were considered juveniles
D. planifrons Distance from the tip of the pseudorostrum to the dorsal posterior border of the carapace. Measurements were made using calibrated eyepieces on a dissected microscope Adults were determined based on the size of ovigerous females. All individuals below the adult size (2.8 mm carapace length) were considered juveniles
Capitella sp. Distance from the prostomium tip to the terminal part of the pygidum of relaxed and entire individuals. Measurements were made using calibrated eyepieces on a dissected microscope Adults were determined based on the size of gravid females. All individuals below the adult size (8 mm body length) were considered juveniles
Cylindroleberidae 1 Distance from the anterior border to the posterior border of the shell. Measurements were made using calibrated eyepieces on a dissected microscope Adults were determined based on the size of ovigerous females. All individuals below the adult size (3 mm shell length) were considered juveniles
B. elongatum Distance from the tip of the rostrum to the tip of the caudal fin. Measurements were made using a digital caliper Sizes of juveniles (<19 mm body length) and adults (>20 mm body length) were obtained from length-frequency distribution presented in Vergara et al. (2011)
T. dombeii Distance from the anterior end to the posterior end. Measurements were made using a digital caliper Sizes of juveniles (<10 mm shell length) and adults (>35.5 mm shell length) were obtained from age-length analysis presented in Urban (1996)