Table 1 The predictor variables included in the joint species distribution model of Australian humpback (Sousa sahulensis) and Indo-Pacific bottlenose dolphins (Tursiops aduncus) around the North West Cape, Western Australia, and their data sources. Values for predictor variables were calculated within the PyQGIS API using Python 3.8.053 and QGIS 3.8.3 Zanzibar54.

From: Habitat partitioning, co-occurrence patterns, and mixed-species group formation in sympatric delphinids

Predictor variable

Units

Data source

Water depth

m

Water depth for each site was calculated with the Ordinary Kriging Tool (SAGA Toolbox61) from in situ measurements (n = 5024) taken with the research vessel’s depth sounder

Distance to shore

m

Distance to shore was measured as the Euclidean distance from the centre of each site to the nearest land

Cumulative survey effort

m2

Daily survey effort was calculated by adding a 250 m buffer to the recorded GPS track of the research vessel and then calculating the survey effort area within each site. Cumulative survey effort was calculated by summing the daily survey effort for each austral season (i.e., autumn, winter, and spring)

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