Chakrabarty, M. & Homechaudhuri, S., 2013. Fish guild structure along a longitudinally-determined ecological zonation of Teesta, an eastern Himalayan river in West Bengal, India.  Arxius de Miscel·lània Zoològica, 11.

Table 1. Longitudinal zonation concepts, the sampling areas and their hydrological and ecological characteristics

Tabla 1. Conceptos de zonación longitudinal, áreas de muestreo y sus características hidrológicas y ecológicas.

 

 

Fish zones

Sampling areas

Elevation

Temperature (°C )

Water velocity (m/sec)

          
             Stream (ft)

Habitat guilds

Preferred spawning habitat

AT

WT

    width      depth

High-mid altitude zone

Rishi Khola

Moderate to high (1093-1000 ft) elevation watersheds dominated by side slopes with gentle slopes and steep slopes.

 

21-23.7

 

18.5-21

 

2.1-2.9

 

1

1

Primary forest; hilly terrain

Lithophils / lithopelagophils

Rungpo

(26°10'21.94'' N;

88°31'46.73'' E)

 

21.1-24.5

 

19.5-21

 

1.9-2.2

 

15

 

31-32.5

 

Secondary forest

Mid altitude zone

Teesta Bazaar

(26°00'03.97'' N;

88°26'31.80'' E)

 

 

Moderate (628 ft) elevation watersheds dominated by side slopes and gentle slopes.

 

 

24-27

 

20.7-24.9

 

1.6-1.9

 

20

 

23-25

 

Secondary forest;

ongoing construction work of Teesta Barrage project

 

Lithoplegophils / Speleophils

Low altitude-plain zone

Sevoke

(26°53'25.37'' N;

88°28'22.97'' E)

 

 

Moderate to low elevation (500 ft) watersheds dominated by gentle slopes with substantial areas of flats and side slopes; river hits the plain at this site.

 

18.5-25.2

 

15.4-18.5

 

1.3-1.6

 

7.4-21

 

24-25

 

Secondary forest

Lithoplegophils /  Psammophils

River plains

Gojoldoba

(26°45'08.55'' N;

88°35'05.04'' E)

 

 

Low elevation

(380-187 ft) dominated by flats, pastured land and urban inhabitation.

30.1-35.5

 

28.2-31

 

0.9-1.4

 

40

 

25-27

 

Secondary forest; urban area; presence of Teesta Barrage

 

Phytophils / Phytolothophils

Domohoni

(26°33'47.11'' N;

88°45'39.34'' E)

 

 

34-35.7

 

30.1-31

 

0.45-0.9

 

38

20-22

 

Agriculture land; urban area

 

Haldibari

(26°20'52.00'' N;

88°54'16.76'' E)

 

 

33.7-37.2

 

29.9-31.1

 

0.45-0.55

 

35

 

20-21

Agriculture land; urban area

Phytophils / polyphils