Limacina rangii is a keystone species of the mesozooplankton of Antarctic pelagic ecosystems.

[10] Under different conditions in McMurdo Sound there can be over 300 individuals per m3, which is over 20% of the biomass of zooplankton.

[10] Fecal pellets of Limacina rangii and its quantity have been firstly described by Manno et al.

[12] Fecal pellets are oval, greenish brown and with peritrophic membrane.

[12] Population of Limacina rangii in the studied area in the Ross Sea produced from about 71,000 pellets per square meter per year to about 362,000 pellets per square meter per year.

[12] Fecal pellets of Limacina rangii has contributed to about 19% of flux of organic carbon.