Habitat Loss & Fragmentation
Transcript of Habitat Loss & Fragmentation
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TSUKUBA UNIVERSITY-JAPAN
18-21 June 2012
Lilik Budi Prasetyo http://lbprastdp.staff.ipb.ac.id
Landscape Ecology
Structure (Patch, Matrix, Corridor)
Function (habitat)
Change due to
disturbance &
Natural Process
Patch
Matrix
MEGA DIVERSITY COUNTRY
Indonesia : - 11 percent of the world's flowering plants (352 000 spc), - 12 percent of the world's mammals (5 500 spc) - 15 percent of all amphibians and reptiles (25 000 spc) - 17 percent of all birds (10 000 spc) - 37 percent of the world's fish (32 000 spc)
Impact on Species a) Extinction forest specialist
species b) Extinction of core/interior
species c) Species isolation -> lead to
extinction d) Increase edge species e) Increase habitat generalist
species
Habitat Loss & Fragmentation
Taxonomic
Group Number
Plants 110
Birds 390
Reptiles 48
Fish 8
Mammals 131
Insects 19
Molluscs 12
Crustaceans 9
Noerdjito & Maryanto Nov. 2001
Endangered Species List of Indonesia
Species receives extra protection from a Presidential Decree (KepPres). 1. Javanese Gibbon (Hylobates moloch) 2. Sumatran Tiger (Phantera tigris sumatrae); 3. Orangutan (Pongo pygmaeus); 4. Javanese Eagle (Spizaetus bartelsi); 5. Anoa (Anoa depressicornis, Anoa quarlesi); 6. Babirusa (Babyrousa babyrussa); 7. Javanese Rhinoceros (Rhinoceros sondaicus); 8. Sumatran Rhinoceros (Dicerorhinus
sumatrensis); 9. Komodo Dragon (Varanus komodoensis); 10. Bird of Paradise (all species in the family
Paradiseidae); 11. Leaf Monkey (Presbytis potenziani);
Research Trends
Habitat loss & its driving force, species conservation
Habitat Fragmentation & Corridor Conservation
Species distribution within fragmented remnant forest
Habitat Suitability
Second Habitat
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1985 1989
Balairaja Nature Reserve
1992 2000 2004
Forest
Bush
Grassland
Settlement
Bareland
Oil Palm
Rubber
Upland
Water body
Road
River
Land Cover Change 1985-2004
Case 1 : Habitat Loss , Driving Force & Species Conservation
Wildlife existence
Elephant Distribution & Potential Conflict with community, Lead to extinction
Case 2 : Small mammal distribution in Remnant Forest Balairaja Nature reserve
Concept of Edge Species & Interior species
Edge
Core/Interior
Edge : under two different micro-climates (bare land & forest) Core/Interior : core/interior part of remnant forest
LINE TRANSECT & TRAP POSITION
Trap Position Line Transect Direction
Edge Interior
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Captured Species List
No Species
Transect
∑ I II III IV V VI VII VIII IX X XI
1 S.muelleri 4 3 6 1 - - 1 1 1 1 2 20
2 R.tiomanicus 2 1 - 3 2 2 - - - 2 3 15
3 T.glis 1 1 - - 3 2 6 3 3 1 1 21
4 M.surifer - - 2 4 4 4 4 3 4 - - 25
5 C.notatus - - - - 1 2 3 2 - - - 8
6 P.lowii - - - - - 1 - - - 1
Total 7 5 8 8 10 10 14 10 8 4 6 90
Rattus tiomanicus
Callosciurus notatus
Tupaia glis
EDGE SPECIES
Distance from edge (m)
Distance from edge (m)
No
Ind
ividu
N
o In
divid
u
Maxomys surifer
Sundamys muelleri
Interior species
DISTRIBUTION PATTERN :
Distance from edge (m)
Distance from edge (m)
No
Ind
ivid
u
No
Ind
ivid
u
))*655,14()*003,0())284,0()*052,0(198,9(1
1ndvidrivslpelve
P
Case 3 :Habitat Suitability, Sumatran Tiger Bukit Tiga puluh National Park
Elevation Slope
Distance from River
NDVI
Low Suitable
Moderate Suitable
High Suitable
Conflict between Sumatra Tiger & Community
Case 4 : Second Habitat Sumatran Tiger Conservation ZSL-Indonesia, PHKA & LIPI
Sumatran Tiger was captured GPS collar was set up After several months was released in To new habitat (second habitat)
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Sumatran Tiger were spending more time in secondary forest & forest edge (border between forest non forest, disturb forest)
Lead to conflict with community
Lead to extinction due to poaching/hunting
Release Point
Every one hour the GPS information was received
Case 5. Fragmentation HALIMUN NATIONAL PARK 1989 - 2003
1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 2001 2003
UNGKO (Hylobates agilis F. Cuvier 1821) Javan Gibbon ((Hylobates moloch) Distribution at Mt. Halimun Salak National Park
Mt.Salak
Mt.Halimun
Land cover changes 1989 - 2008
Mt.Halimun
Mt.Salak Corridor Fragmentation
Case 6 : Habitat Suitability : Macrocephalon maleo SAL. MULLER, 1846
Bogani Nani Wartabone
a. Endemic to Sulawesi and Buton Islands
b. Endangered (habitat destruction, fragmentation, small population, rapidly decline)
c. lay their eggs in the ground/sand and let the warm soil do the incubation
Timothy Boucher
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Distance from river
Distance from river
Distance from hot spring
Distance from settlement
Distance from river
Distance from river
Distance from hot spring
Distance from settlement
Habitat Suitability : Macrocephalon maleo SAL. MULLER, 1846
Suitability Map
Legend Probability
Study Area
Matrix of Oil Palm
Remnant forest
Case 7 : Forest Fragmentation & Amphibi
Species Diversity
Remnant forest Core Oil Palm Matrix Corridor
Case 8 : Habitat Suitability of Sago in Seram Island
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𝑷 = 𝒆 (𝒂+𝒃𝟏 𝑿𝟏+𝒃𝟐 𝑿𝟐+𝒃𝟑 𝑿𝟑+𝒃𝟒 𝑿𝟒+𝒃𝟓 𝑿5)
𝟏 + 𝒆 (𝒂+𝒃𝟏 𝑿𝟏+𝒃𝟐 𝑿𝟐+𝒃𝟑 𝑿𝟑+𝒃𝟒 𝑿𝟒+𝒃𝟓 𝑿5)
Note: P: Probabality of Suitable Habitat a: Constant b1-b5: Coeeeficient of regression X1: elevation
X2: Slope X3: Soil Type X4: Distence from river x5: NDVI.
P = ax1 + bx2 + cx3 + dx4 + ex5
Note: P: Suitable habitat index a-e: weight X1: elevation X2: slope
X3: Soil type X4: Distance from river x5: NDVI.
Model Approach
Elevation
Slope
Soil
Distance from river
Vegetation index
High Suitable Moderate Suitable Low Suitable
High Suitable Moderate Suitable Low Suitable
Habitat Suitability (PCA Method)
Habitat Suitability (Logistic Regression Method)
Accuracy : 65,62%
Accuracy : 82,81%
Summary Habitat Loss & Fragmentation have been occurring,
Lead to species extinction
Remote Sensing & GIS is powerful tools : understanding distribution of species, changes process, structure & function of the landscape
Need further exploration
Thank you very much !