Table 1.  Study area of non-volant small mammals in Coorg

 

Area

Location

Coordinates

Altitude (m)

Vegetation (forest) type (Pascal & Meher-Homji 1968)

Madikeri

Shanthi Estate

12°24'28.1"N, 75°44'24.2"E

935

Medium elevation evergreen

Madikeri

Roshanara

12°24'47.06"N, 75°45'05.36"E

1000

Medium elevation evergreen

Kallur

Rainforest Retreat

12°28’32.1”N, 75°42’38.7”E

1060

Medium elevation evergreen

Galibeedu

Golden Mist

12°27'53.6"N, 75°41'41.3"E

1110

Medium elevation evergreen

Theralu

SAI Sanctuary

11°59'49.7"N, 75°53'08.8"E

815

Medium elevation evergreen

Kushalnagara

Last Resort

12°22'54.8"N, 75°54'31.2"E

650

Moist deciduous

Birunani

Ponnya Estate

12°01’53”N, 75°56’06”E

800

Medium elevation evergreen

Hakkathur

Rose Estate

12°21'17.8"N, 75°45'28.6"E

950

Medium elevation evergreen

Ponnampet

Raja's Estate

12°08'38.5"N, 75°55'52.3"E

830

Moist deciduous

Kutta

Palthope Estate

12°0'25.6N, 76°02'15.7"E

915

Moist deciduous

Kutta

Cinchona Estate

11°58'07.9"N, 76°03'13"E

905

Moist deciduous

 

 

 Table 2.  Small mammals trapped in different habitats in Coorg.

 

Taxon

Agri

Bamb

Bana

Card

Coff

Fore

Habi

Open

Oran

Tea

Vani

Rodentia: Muridae

Bandicota bengalensis

+

+

+

+

Golunda ellioti

+

+

Millardia meltada

+

+

Mus booduga

+

+

+

+

Mus musculus

+

+

+

+

+

+

+

+

+

Rattus rufescens

+

+

+

Rattus satarae

+

+

Rattus wroughtoni

+

+

+

+

+

+

+

Vandeleuria nilagirica

+

Rodentia: Sciuridae

Funambulus tristriatus

+

+

+

+

+

+

+

Rodentia: Platacanthomyidae

Platacanthomys lasiurus

+

Eulipotyphla: Soricidae

Suncus etruscus

+

+

Suncus murinus

+

+

+

+

+

+

+

+

+

+

Suncus niger

+

+

+

+

+

+

+

 

 

Table 3. Average trap success of non-volant small mammals in Coorg

 

Species

Total captures

Habitats

Average (SD)

B. bengalensis

7

4

0.25 (0.13)

F. tristriatus

35

7

0.57 (0.57)

G. ellioti

5

2

0.2 (0.14)

M. meltada

9

2

0.35 (0.35)

M. booduga

20

4

0.32 (0.32)

M. musculus

53

9

0.54 (0.2)

P. lasiurus

2

1

0.3 (0)

R. rufescens

10

3

0.13 (0.05)

R. satarae

24

2

1.65 (2.19)

R. wroughtoni

108

7

1.74 (1.57)

S. etruscus

2

2

*

S. murinus

67

11

0.77 (1.12)

S. niger

67

8

0.84 (0.75)

V. nilagirica

3

1

0.5 (0)

Total

412

 

3.79 (3.39)

 

 

Table 4.  Goodness of fit test for small mammal abundance in vegetation zones in Coorg

 

Vegetation zone

Area (ha)

Individuals trapped (Ob)

Expected individuals (Ex)

G

MEEF

18.99

292

338.11

-42.81

MDF

4.15

120

73.89

58.19

Total

23.14

412

412

30.76

 

MEEF – Medium elevation evergreen forest; MDF – Moist deciduous forest; G – Goodness of fit

 

 

Table 5.  Goodness of fit test for small mammal abundance in different habitats in Coorg

 

Habitat

Area (ha)

Individuals trapped (Ob)

Expected individuals (Ex)

G

Agriculture

2.5

44

44.51

-0.51

Bamboo

0.55

31

9.79

35.72

Banana

1.2

8

21.37

-7.86

Cardamom

3

37

53.41

-13.58

Coffee

7

104

124.63

-18.82

Forest

1.6

51

28.49

29.70

Habitation

0.95

22

16.91

5.78

Open

4.84

108

86.17

24.38

Orange

0.5

2

8.90

-2.99

Tea

0.5

4

8.90

-3.20

Vanilla

0.5

1

8.90

-2.19

Total

23.14

412

412

92.88

 

 

Table 6.  Diversity indices of non-volant small mammals in 12 habitats in Coorg

 

 

S

N

DMg

H’

E

D

Dominance

Agriculture

9

41

2.15

2.00

0.91

0.85

0.22

Bamboo

6

31

1.46

1.45

0.81

0.72

0.35

Banana

5

8

1.92

1.49

0.93

0.75

0.37

Cardamom

7

37

1.66

1.56

0.80

0.75

0.35

Coffee

9

104

1.72

1.90

0.87

0.82

0.32

Forest

5

51

1.02

1.25

0.78

0.67

0.45

Habitation

5

22

1.29

1.03

0.64

0.50

0.68

Open

9

108

1.71

1.76

0.80

0.80

0.28

Orange

2

2

1.44

0.69

1.00

0.50

0.50

Pineapple

2

3

0.91

0.64

0.92

0.44

0.67

Tea

3

4

1.44

1.04

0.95

0.62

0.50

Vanilla

1

1

0

0

0

0

1.00

 

S – species richness; N – no. of individuals; DMg – Margalef Richness Index; H’ – Shannon-Weiner Diversity Index; E – Pielou’s Evenness Index; D – Simpson’s Diversity index; Dominance – Berger-Parker Index

 

 

Table 7.  Significant variance in Shannon-Wiener Diversity index between habitats using modified t-test by Hutcheson (1970).

 

 

Agri

Bamb

Bana

Card

Coff

Fore

Habi

Open

Oran

Pine

Tea

Vani

Agri

 

0.1669

0.3766

0.2697

0.7820

0.0344

0.0213

0.4944

<.0001*

0.0014

0.0770

<.0001*

Bamb

 

 

0.9337

0.7570

0.1569

0.5291

0.2773

0.3118

0.0054

0.0285

0.4023

<.0001*

Bana

 

 

 

0.9011

0.4341

0.6384

0.4106

0.6003

0.1219

0.1269

0.4676

0.0128

Card

 

 

 

 

0.2846

0.3215

0.1680

0.5144

0.0015

0.0144

0.2914

<.0001*

Coff

 

 

 

 

 

0.0114

0.0126

0.5810

<.0001*

0.0016

0.0894

<.0001*

Fore

 

 

 

 

 

 

0.5067

0.0375

0.0020

0.0564

0.6326

<.0001*

Habi

 

 

 

 

 

 

 

0.0308

0.2251

0.2779

0.9871

0.0013

Open

 

 

 

 

 

 

 

 

<.0001*

0.0034

0.1358

<.0001*

Oran

 

 

 

 

 

 

 

 

 

0.8063

0.4110

1.0000

Pine

 

 

 

 

 

 

 

 

 

 

0.3950

0.0592

Tea

 

 

 

 

 

 

 

 

 

 

 

0.0538

Vani

 

 

 

 

 

 

 

 

 

 

 

 

 

Highlighted cells show significant differences between H’ between habitats, while those marked with asterisk show significance after Bonferroni correction

 


 

 

Figure 1.  Proportions of individuals of small mammals trapped in Coorg.

 

 

 

 

 

 

 

 

 

 

 


Figure 2.  (a) Proportion of new individuals captured per night; (b) Proportion of recaptures

 

 

 

Figure 3. Single linkage clustering of species richness of non-volant small mammals across habitats using Jaccard’s Index of Similarity

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Figure 4.  Average trap success of non-volant small mammals in broad habitats in Coorg

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Figure 5.  Affiliations to habitats by species.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Figure 6.  Habitats occupied by non-volant small mammals in proportions (stacked).

 

 

Rodent MH similarity index.jpg

 

Figure 7. Single linkage clustering of abundances of non-volant small mammals across

habitats using Morisitta-Horn Index of Similarity

 

 

CA OM 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 8. Correspondence Analysis of non-volant small mammals depicting the dependence of

presence and abundance of species on habitat types.  Numbers in parenthesis are percent variation

explained by each correspondence axis.  Factor loading for banana and V. nilagirica are divided

by 10 before plotting to avoid scale problem.

 

 

 

PCA OM

 

Figure 9. Principal Component Analysis of non-volant small mammal data

depicting diversity profiles among habitats.  Numbers in parenthesis are percent

variation explained by each principal component.

 

  

sanjay web_Page_1.jpg

Image 1. Non-volant small mammal trapping sites in Coorg Western Ghats, Karnataka

sanjay web_Page_6.jpg

 

sanjay web_Page_7.jpg