The contribution of environmental factors to fish assemblages in the Río Acahuapa, a small drainage in Central America
Author
Álvarez, Francisco S.
Departamento de Investigación, UDP Ciencias Neotropicales, Calle Francisco Campos 166, Colonia Escalón, CP 1101, San Salvador, El Salvador
samuel_biologo@hotmail.com
Author
Matamoros, Wilfredo A.
Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas, Libramiento Norte Poniente 1150, Colonia Lajas Maciel, CP 29039, Tuxtla Gutiérrez, Chiapas, México
wilmatamoros@yahoo.com
Author
Chicas, Francisco A.
Facultad de Ciencias Naturales y Matemática, Escuela de Biología, Universidad de El Salvador, Final Av. Estudiantes Héroes y Mártires del 30 de julio, Ciudad Universitaria, CP 1101, San Salvador, El Salvador
francisco.chicas@ues.edu.sv
text
Neotropical Ichthyology
2017
2017-10-05
15
3
e 170023
1
11
http://dx.doi.org/10.1590/1982-0224-20170023
journal article
10.1590/1982-0224-20170023
1982-0224
20719581
Tab 1. Habitat characteristics of the 17 study sites in the Río Acahuapa, San Vicente, El Salvador, 2011-2012. Average values of each of the environmental variables for five sampling campaigns.| Sites | T (°C) | pH | DO (mg/L) | Conductivity (uS) | Width (m) | Depth (cm) | Salinity (ppt) | Water velocity (m/s) | Sand (%) | Rock (%) | Leaves (%) | Logs (%) | Silt (%) | Elevation (m) |
|---|
| ALE | 30.8 | 6.5 | 9.8 | 325.6 | 23.0 | 23.1 | 0.11 | 0.20 | 61.7 | 28.3 | 2.0 | 1.7 | 6.3 | 19 |
|---|
| ACA2 | 31.0 | 6.9 | 6.3 | 331.1 | 19.4 | 28.6 | 0.09 | 0.31 | 18.9 | 41.3 | 3.6 | 33.3 | 2.9 | 95 |
|---|
| ACA5 | 30.1 | 7.0 | 6.4 | 364.6 | 15.2 | 24.0 | 0.12 | 0.18 | 25.3 | 33.0 | 2.1 | 31.6 | 8.0 | 110 |
|---|
| ACA4 | 31.1 | 6.9 | 6.2 | 258.8 | 11.7 | 25.9 | 0.08 | 0.18 | 25.5 | 28.1 | 3.2 | 30.6 | 12.6 | 115 |
|---|
| SFE | 30.0 | 8.5 | 6.6 | 291.6 | 9.6 | 26.4 | 0.05 | 0.18 | 12.9 | 46.1 | 3.7 | 37.4 | 0.0 | 137 |
|---|
| SIS | 30.2 | 6.9 | 6.3 | 296.9 | 10.3 | 21.8 | 0.10 | 0.21 | 17.7 | 44.9 | 2.3 | 35.1 | 0.0 | 177 |
|---|
| LJO | 30.0 | 6.7 | 6.1 | 226.6 | 11.8 | 27.1 | 0.08 | 0.24 | 46.0 | 29.6 | 1.0 | 21.2 | 2.2 | 184 |
|---|
| ACA12 | 26.5 | 6.5 | 4.9 | 224.1 | 5.4 | 11.3 | 0.07 | 0.11 | 27.5 | 32.0 | 2.7 | 21.9 | 15.9 | 267 |
|---|
| SCR | 27.4 | 6.7 | 6.4 | 457.7 | 7.3 | 34.3 | 0.08 | 0.21 | 24.6 | 37.1 | 5.5 | 18.9 | 13.9 | 301 |
|---|
| AMA | 26.5 | 6.2 | 5.5 | 234.2 | 5.2 | 17.9 | 0.08 | 0.21 | 21.5 | 37.0 | 3.7 | 22.6 | 15.3 | 314 |
|---|
| GRA | 27.6 | 6.3 | 5.9 | 225.8 | 4.2 | 24.1 | 0.08 | 0.16 | 24.7 | 38.2 | 2.4 | 18.7 | 16.0 | 325 |
|---|
| ACH | 27.8 | 6.4 | 6.1 | 328.5 | 3.8 | 27.5 | 0.08 | 0.18 | 17.7 | 40.4 | 3.3 | 28.7 | 10.0 | 341 |
|---|
| TEM | 27.6 | 6.4 | 5.4 | 484.4 | 4.6 | 13.7 | 0.08 | 0.15 | 13.0 | 39.3 | 2.7 | 33.3 | 11.7 | 348 |
|---|
| FRI | 26.1 | 6.2 | 5.4 | 180.3 | 4.3 | 16.9 | 0.08 | 0.12 | 21.9 | 40.5 | 2.5 | 23.2 | 11.9 | 351 |
|---|
| ACA16 | 28.3 | 8.0 | 5.5 | 344.4 | 8.3 | 18.0 | 0.08 | 0.17 | 34.3 | 38.5 | 2.0 | 20.2 | 5.0 | 419 |
|---|
| ISM | 27.7 | 6.3 | 4.7 | 324.4 | 4.2 | 17.9 | 0.08 | 0.12 | 24.5 | 28.6 | 8.9 | 12.9 | 25.1 | 509 |
|---|
| IST | 28.5 | 6.8 | 5.0 | 438.4 | 9.6 | 20.8 | 0.18 | 0.20 | 21.9 | 33.0 | 3.4 | 23.4 | 18.3 | 519 |
|---|