Waterbird use of farm dams in south-eastern Australia: abundance and influence of biophysical and landscape characteristics

Hamilton, Andrew J.; Conort, Chloé; Bueno, Aurore; Murray, Christopher G.; Grove, James R.

doi:10.1186/s40657-016-0058-x

Avian Research

Table 2 Pearson’s Product Moment correlation coefficients for density (birds/ha) of different functional groups and biophysical variable

From: Waterbird use of farm dams in south-eastern Australia: abundance and influence of biophysical and landscape characteristics

	Shorebirds (Charadriiformes)	Long-legged wading birds	Swamphens and coot (Rallidae)	Pursuit predators	Diving	Dabbling	Filtering	Herbivorous	Total abundance	Species richness
Area (ha)	0.499	−0.115	0.787	−0.105	0.269	0.330	0.275	−0.085	0.157	−0.389
Perimeter (m)	0.434	−0.102	0.635	−0.121	0.188	0.248	0.173	−0.094	0.092	−0.446
Shoreline irregularity	0.161	−0.018	0.189	−0.106	0.007	−0.046	−0.072	0.027	0.046	−0.341
Maximum depth (m)	0.373	0.030	0.273	0.095	0.158	0.221	0.222	−0.150	−0.012	−0.208
Distance shallow slope (m)	0.380	−0.120	0.4923	−0.183	0.116	0.155	0.109	0.008	0.128	−0.395
% Shallow slope	0.155	0.005	0.092	−0.243	−0.162	−0.006	−0.119	0.270	0.237	−0.273
Bare earth	0.058	0.068	0.132	−0.256	−0.289	0.090	0.003	0.358	0.335	−0.009
Distance to nearest pond (m)	−0.280	0.158	−0.266	0.022	−0.115	−0.139	0.055	−0.113	−0.182	0.075
Emergent vegetation	0.151	−0.124	0.617	−0.101	0.208	0.235	0.188	−0.201	−0.016	−0.136
Non-tree perches	0.193	0.039	0.471	0.212	0.026	0.317	0.163	−0.159	0.021	−0.024
Tree cover	−0.019	0.059	0.016	0.127	0.117	−0.106	−0.046	−0.221	−0.197	0.013
Trees in pond	−0.028	0.212	0.033	0.293	−0.069	0.020	−0.012	−0.072	−0.028	0.029
Chlorophyll a (mg/L)	−0.124	0.116	−0.147	0.180	−0.081	−0.088	0.181	0.0173	−0.018	0.153
Conductivity (µS/cm)	0.323	0.148	0.314	−0.200	0.030	0.273	0.296	0.059	0.185	−0.044
Dissolved O₂ (mg/L)	0.159	0.198	−0.001	0.050	0.081	−0.007	0.003	−0.007	0.032	0.114
Turbidity (NTU)	0.026	0.051	−0.123	0.006	−0.159	−0.124	−0.092	0.100	0.030	−0.029
pH	0.208	0.144	0.0849	−0.064	0.281	0.130	0.223	0.039	0.137	0.191
Total invertebrates	−0.026	0.002	0.065	0.066	0.0738	0.097	−0.048	0.056	0.097	−0.010

*Denotes p < 0.05 for the null hypothesis that r = 0, and # denotes that p was significant after the Dunn-Šidák correction was applied (p < 0.0003)
Strong correlations (>0.6) are presented in italics. Factors without units reported were measured on the 1‒5 Likert scale described above

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ISSN: 2053-7166

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