Embed Size (px)
Citation preview
THE ANURANS OF AGUSAN MARSH
Merlita
Lopez-Almeria
and Olga M. Nuñeza
Department of Biological Sciences
School of Graduate Studies
MSU- Iligan Institute of Technology, Tibanga Iligan City
Why Agusan Marsh?
largest marshland in Asiastores more than 15% of the nation’s freshwater resourceecologically significant wetland;host and protect rare, threatened & endangered species;has a number of pristine habitats;
WHAT ARE AMPHIBIANS?
amphi = “both” bios = “life”
101 Species in the Philippines 79 Endemic (Diesmos,2005)
21 Species previously recorded (Agusan marsh Wildlife Sanctuary Profile)
12 Species and 7 Endemic
(Basilan and Ibañez, 2005 unpublished)
Data on Amphibians
Importance of Amphibians?
Bioindicator
Source Food
Source of MedicineEnergy Flow
Biological Control
Models in Scientific Studies
Objectives of the Study(1) To determine the current status of amphibians in
the marsh.(2) To determine the Species composition and
Abundance of amphibians in the four habitat types in Agusan marsh.
(3) To determine the endemic and threatened species present in the area.
(4) To generate a list of socio-economically important species of amphibians and its threats in the Marsh.
Agusan Marsh, Province of Agusan del Sur
Sago Forest (Site 1)
Study Area
Terminalia Forest (Site 2)
Study Area
Mixed-swamp Forest (Site 3)
Study Area
Peat Swamp Forest (Site 4)
Study Area
SAMPLING PROCEDURE1. Quadrat Sampling
2. Opportunistic Approach
3. Pitfall Traps Methods
4. Ethnobiological Survey
Results18 Species of Anurans recorded
Threatened:
4 Vulnerable
1 Near Threatened
13 Least Concern
Endemics: 55.55%
4 Philippine Endemic
2 Mindanao Faunal Endemic
1 Mindanao Island Endemic
3 New species
ResultsNew species
Philautus sp.
Oreophryne sp.1 Oreophryne sp.2
Results
Vulnerable frogs
Philautus acutirostris Philautus poecilus
Rhracophorus bimaculatus
Limnonectes parvus
Sago ForestTerminalia
ForestMixed Swamp
ForestPeat swamp
Forest TOTALFamily Bufonidae
Bufo marinus 0 16 0 68 84Family Microhylidae
Kaloula baleata 1 4 0 0 5Kaloula conjuncta
meridionalis 0 3 2 2 7Oreophryne sp.1 4 10 1 0 15Oreophryne sp.2 1 2 3 0 6
Familly RanidaeOccidozyga laevis 65 55 14 28 162
Genus RanaFejervarya cancrivora 49 108 51 30 238Fejervarya limnocharis 24 62 18 19 123Limnonectes parvus 2 12 3 5 22Limnonectes leytensis 2 27 22 17 68Limnonectes woodworthi 25 35 39 43 142Rana everetti 4 11 6 6 27
List of Anurans in Agusan Marsh I
Sago Forest
TerminaliaForest
Mixed SwampForest
Peat swampForest TOTAL
Family RhacpphoridaeGenus Philautus
Philautus sp. 5 1 1 0 7Philautus acutirostris 0 5 2 3 10Philautus poecilus 5 1 1 0 7
Genus RhacophorusPolypedates leucomystax 10 10 25 12 57Rhacophorus appendiculatus 7 15 3 4 29Rhacophorus bimaculatus 3 2 1 2 8
Total Number of Individuals 207 379 192 239 1075
Total Number of Species 15 18 16 13 18
Total Number of Endemics 9 10 10 6 10Total Number of Threatened
Species 7 8 8 4 8
List of Anurans in Agusan Marsh II
Anurans of Agusan MarshFamily Ranidae
Anurans of Agusan Marsh
Microhylidae Bufonidae
Ranidae
Anurans of Agusan Marsh
Rhacophoridae
1
2
3
Threats of Anurans in the Marsh
Pollution of rivers and streams
Threats of Anurans in the MarshUse as food
Threats of Anurans in the MarshDraining of swamps for agriculture
Threats of Anurans in the Marsh
Introduction of alien species
Diversity of anurans is high with 55.55% endemism in Agusan marsh.
Abundant species are socio-economically important frogs in the marsh.
Discovery of species new to science suspected as native to Agusan.
Terminalia and Mixed-swamp forests are rich in anuran species.
Most of the endemic species are facing threats in the marsh.
C
CONCLUSION
Further study on the biology of the new frog species.
Further study on the alien or invasive species particularly its effect on the ecology of the marsh.
To have a constant amphibian monitoring.Provision of health, education and development
services to the people that channeled towards conservation in the marsh appears to be necessary.
C
RECOMMENDATION
Thank you…
