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2.2.1 FRESHWATER ECOREGIONAL EXERCISES

FRESHWATER BIODIVERSITY OF LATIN AMERICA AND THE CARIBBEAN A Conservation Assessment Biodiversity Support Program (Olson et al., 1998)

Freshwater Ecoregion

Major

Biological

Conservation

Priority

Habitat Type

Distinctiveness

Status

Status

Present in Mexico - 28 (24 %) of a Total of 117 freshwater ecoregions, 2 of highest priority.

4

5

Río Bravo (not in Mex.)

1

6

Pecos (not in Mexico)

5

7

Guzmán

6

8

Mapimí

6

9

Cuatro Ciénegas

6

10

Llanos El Salado

6

11

Conchos

5

12

Lower Río Bravo

1

13

Río San Juan

5

14

Río Salado

5

LERMA/SANTIAGO COMPLEX

15 Santiago

4

16 Chapala

5 (3)

17 Lerma

6 (4)

18 Rio Verde Headwaters

5

19 Manantlan/Ameca

4

Locally Important

Vulnerable

- Regionally Outstanding Locally Important

- Critical Endangered

Regionally Important

Critical

Globally Outstanding Regionally Outstanding Regionally Important Regionally Important Globally Outstanding Regionally Outstanding Regionally Outstanding Regionally Outstanding Regionally Outstanding Regionally Important

Endangered Endangered Endangered Endangered Vulnerable Endangered Endangered Endangered Endangered Endangered

Regionally Important Globally Outstanding Regionally Outstanding Regionally Outstanding Regionally Important

Endangered Endangered Critical Endangered Vulnerable

Regionally Outstanding

Endangered

Regionally Important

Endangered

Regionally Important

Endangered

2

BAJA CALIFORNIA COMPLEX 1 Baja California COLORADO RIVER COMPLEX

5

0 Upper San Pedro (Gila) 2 Colorado Delta 3 Sonoran SINALOAN COASTAL COMPLEX 4 Sinaloan Coastal RÍO BRAVO COMPLEX

- 2 5

4

3

RÍO PANUCO COMPLEX 20 Río Panuco BALSAS COMPLEX 21 Balsas PACIFIC CENTRAL COMPLEX 22 Tehuantepec ATLANTIC CENTRAL COMPLEX

4

4

4

2

3 1 3 2 3

1 2 3 3 1 2 2 2 2 3

- 3 3

3

23

Southern Veracruz

24

Belizean Lowlands

27

Catemaco

28

Coatzacoalcos

29

Grijalva-Usumacinta

30

Yucatán

32

C. Am. Karst Highlands

4 4 3 4 4 4 (Karst) 4

Major Habitat Type 1 = Large Rivers 2 = Large River Deltas 3 = Large Lakes 4 = Wet-Region Rivers and Streams 5 = Xeric Region Rivers and Streams 6 = Xeric- Region Endorheic (closed) Basin

s

Regionally Outstanding Regionally Outstanding Regionally Outstanding Regionally Outstanding Regionally Outstanding Regionally Outstanding

Regionally Important Priority Status

Endangered Vulnerable Vulnerable Endangered Vulnerable Vulnerable Endangered

2 2 2 2 2 2 3

1 = Highest Priority for Conservation at Regional Scale 2 = High Priority for Conservation at Regional Scale 3 = Priority for Conservation at Regional Scale 4 = Important at Subregional and Local Scales

( ) = Modified for this annalisys

29

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