Figure 1.
Mexican hydrological features: 1 Oases of Baja California Sur; 2 Río Yaqui; 3 rivers near Chamela, Jalisco; 4 Río Santiago; 5 Río Armería - Ayuquila; 6 Río Balsas; 7 bodies of water in Guerrero State; 8 Río Atoyac-Verde; 9 Río Tehuantepec; 10 Rivers along the south Pacific coast of Chiapas; 11 Río Bravo; 12 Río Lerma; 13 bodies of water of Valley of Cuatro Ciénegas; 14 Río Mezquital, Río Nazas and springs of Durango state; 15 Río San Fernando, Río Soto La Marina and other bodies of water in Tamaulipas; 16 Río Pánuco; 17 Río Tuxpan; 18 Río La Antigua; 19 bodies of water of Los Chimalapas; 20 Río Papaloapan; 21 bodies of water in coastal plain of Tabasco; 22 basins of Río Usumacinta and Río Grijalva, Chiapas; 23 bodies of water of the Yucatán Peninsula.
Table 1.
23 Mexican hydrological basins.
Figure 2.
Dendrogram resulting from the similarity matrix based on the Sørensen Similarity Index for all river basins without introduced species.
Nearctic and Neotropical groups are encircled, while the remaining basins correspond to the Pacific group and to the Cuatro Ciénegas river basin. Groups are based on parasite species composition of the basin.
Figure 3.
Non Metric multidimensional scaling (nMDS) ordination plot resulting from the resemblance matrix of the river basins, based on the Sørensen Similarity Index, without introduced species.
Figure 4.
Sørensen similarity plotted against distance for all pairwise comparisons between drainage basins.