Stowaways Supplement S6. Relative Size Index (RSI) Comparative Dataset & R Code for Mediterranean Ship Rats

Relative size index (RSI) comparative dataset and R code used to compare the RSI sensu Lomolino (1985) of the ship rats from the Ma'agan Mikhael B (MMB) shipwreck with other Mediterranean island populations. 

Worksheet 1: RSI_Dataframe - data frame used in R to produce RSI bar chart.

Worksheet 2: RSI Data - Mainland and island samples' mean condylobasal lengths (CBL) and further calculations used to derive the RSI values per island population.

Worksheet 3: CBL values for each Provençal and Corso-Sardinian Islet that was combined in the RSI analysis, taken directly from Granjon & Cheylan (1990).

Data sources:

MMB - Southern Levant (this study)

Galite & Zembra Islands - Tunisia (Ibrahim et al., 2017)

Congreso Island - Morocco (Ventura & Lopez Fuster, 2000)

São Miguel & Terceira Island (Azores) - Portugal (Ramalhinho et al., 1996)

Corsica & Provençal Islets - Provence (Granjon & Cheylan, 1990)

Sardinia & Corso-Sardinian Islets - Tuscany (Granjon & Cheylan, 1990)