Transcript DISTRIBUTION OF ENDEMIC MAMMALS IN THE PERUVIAN

DISTRIBUTION OF
ENDEMIC MAMMALS IN
THE PERUVIAN YUNGAS
Heidi Quintana & Victor Pacheco
MUSEO DE HISTORIA NATURAL
UNIVERSIDAD NACIONAL MAYOR DE SAN MARCOS
LIMA - PERU
PERU
The territory of Peru
covers 1,285,256 km².
It neighbors Ecuador
and Colombia to the
north, Brazil to the
east, Bolivia to the
southeast, Chile to the
south, and the Pacific
Ocean to the west.
PERUVIAN YUNGAS
Elevation: 800 – 3600 m
Extension: 15 000 000 ha
Characteristics:
The complex
geology of the
Andes has
generated a
landscape rich in
biodiversity,
endemism and
unique ecosystems
MAMMALS
Eco region
Oceanic
BT Pacific
BS Ecuatorial
Desert
S. Esteparia
Paramo
Puna
Yungas
Rainforest
Sabana
Diversity Endemic sp.
35
0
58
0
60
2
54
6
72
12
23
4
60
8
210
37
286
13
60
1
%
0
0
3.4
10.2
20.3
6.8
13.6
62.7
22
1.7
Endemism by Orders
METHODS
Endemic Species
7
ORDERS
Rodentia
SPECIES
29
Chiroptera
4
Primates
3
Artiodactyla
1
Cingulata
1
Didelphimorphia
1
Paucituberculata
1
40
TYPE A
TYPE B
TYPE C
Tools
HabitatGeographic
Barriers
LANDSCAPE
Endemic
Species
ECOLOGICAL
FACTORS
Species Data
RECORDS
Polygons elaboration
Compilation of
Species
Information
(literature,
museum
records &
observations)
Create
DataBase
Polygons =
Probable
Distribution
TYPE A: POLYGONS


Polygon around
the species
records
Arc View 3
TYPE B: DEDUCTIVE MODEL

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Species records
Altitudinal
ranges –
Digital
Elevation
Model (DEM)
North and South
limits
Arc View 3
TYPE C: INDUCTIVE MODEL


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
Environmental
variables layer
Elevation
MODIS
Arc View 3
Maxent
(a statistical
mechanics
approach)
VARIABLES
Bio2 (Mean Temperature Diurnal Range)
Bio3 (Isothermality)
Bio13 (Precipitation of Wettest Month)
Bio14 (Precipitation of Driest Month)
Bio15 (Precipitation Seasonality)
Elevation
Slope
Topographic exposure
Percent tree cover*
Evi_pca1_5*: Principal component axis 1 of temporal MODIS EVI data
Evi_pca2_5*: Principal component axis 2 of temporal MODIS EVI data
*summarized within 5 km moving window
RESULTS
Distribution along the Yungas
DEPRESION DE HUANCABAMBA
DEPARTMENTS LIMITS
Akodon aerosus
Distribution centered in the North
DEPRESION DE HUANCABAMBA
HUALLAGA RIVER
Akodon orophilus
Central Distribution
PERENE RIVER
INAMBARI RIVER
Oecomys phaeotis
Distribution centered in the South
INAMBARI RIVER
DEPARTMENT LIMIT
Akodon kofordi
Punctual Distribution
Sturnira nana
Exceptions:
TAMBO RIVER
DEPARTMENT LIMIT
Carollia manu
Gracilinanus aceramarcae
Gracilinanus aceramarcae
PRIORITY AREAS
Deductive Model
Inductive model
•Norwest of
Huánuco
•Cordillera
occidental
de Vilcabamba
•Cordillera de
Paucartambo
Above Inambari
River
•Yungas
Centrales
de Bolivia
CONCLUSIONS

The species distribution model allows us to minimize
errors by collecting specimens nearer to the roads
and rivers.

Identify the remote natural areas in which it is likely
that a species is located, based on the characteristics
that they share with previously sampled sites.

The polygons around the points don’t provide the
necessary precision for regional conservation in
Peru.
THANK YOU!
SCGIS
Heidi Quintana Navarrete
[email protected]