scholarly journals Spatial model of human-sumatran orangutan (Pongo abelii) conflict vulnerability in Besitang, Indonesia

2021 ◽  
Vol 912 (1) ◽  
pp. 012055
Author(s):  
N Sulistiyono ◽  
M I Maulana ◽  
I Pramuja ◽  
P Patana ◽  
A Purwoko

Abstract Sumatran orangutan is one of the key species of wildlife that live in the Besitang forest landscape. Conflicts between sumatran orangutans and humans often occur along with the narrowing of sumatran orangutan habitat. The importance of knowing the distribution of locations at risk of human-wildlife conflict is expected to be used as a reference in efforts to mitigate the occurrence of human-wildlife conflict. This study aimed to get information about the vulnerability distribution of human-sumatran orangutan conflict (HSOC) based on influenced factors in Besitang. The Principal Component Analysis (PCA) method is used to select and weight the factors that are thought to influence the distribution of HSOC. Overlay analysis of the factors influencing HSOC distribution is done using Geographic Information System (GIS). The results of the study showed that the vulnerability of HSOC could be divided into three classes namely, the highly vulnerable areas of conflict are 35,282.16 ha (21.66), medium vulnerable areas are 55,662.57 ha (34.17%) and not vulnerable areas are 71,960.85 ha (44.17%). This research will be helpful as an early warning system in HSOC mitigation efforts.

Geography ◽  
2009 ◽  
Vol 94 (1) ◽  
pp. 38-47 ◽  
Author(s):  
Alan B. Dixon ◽  
Afework Hailu ◽  
Tilahun Semu ◽  
Legesse Taffa

2016 ◽  
Vol 30 (6) ◽  
pp. 1200-1211 ◽  
Author(s):  
Michelle L. Lute ◽  
Carlos David Navarrete ◽  
Michael Paul Nelson ◽  
Meredith L. Gore

2009 ◽  
Vol 69 (4) ◽  
pp. 1037-1046 ◽  
Author(s):  
ML. Koening ◽  
BE. Wanderley ◽  
SJ. Macedo

This research was carried out to assess phytoplankton diversity, distribution and ecology on the Pernambuco Continental Shelf and Oceanic region (lat. 7º 33' 00" S to 8º 41' 50" S and long. 34º 04' 47" W to 35º 01' 20" W). Samples were collected during the Joint Oceanographics Projects (JOPS II-Leg 5) by double oblique hauls with a baby bongo net 64 µm mesh size at depth between 14 and 150 m in inshore and offshore waters respectively, in seven transects, totaling 34 stations. The temperature and salinity characterised the tropical water masses. The dissolved oxygen was oversaturated in all stations. The nutrient-low concentrations showed an oligothrophic pattern in the whole area. 173 specific and infraspecific taxa were identified: Dinophyta (103 taxa), Bacillariophyta (61 taxa), Cyanobacteria (7 taxa), Chlorophyta and Chrysophyta (1 taxon). The family Ceratiaceae presented the highest species number (47 taxa). The cyanobacteria Trichodesmium erythraeum Ehrenberg, Oscillatoria spp. and the diatom Leptocylindrus danicus Cleve had higher frequence of occurrence and abundance. Species diversity varied from 0.71 to 3.46 bits.cell-1 and this low index was due to Trichodesmium erythraeum bloom and evenness from 0.14 to 0.65, showing an unstable pattern. The oceanic planktonic species were responsible for the higher richness with 78 taxa, corresponding to 58.39% of the total microphytoplankton. The species association presented two groups. The first one divided in two subgroups: one associated to the neritic/oceanic and oceanic planktonic species and the other to the oligotrophic indicator species. The second group was composed of some key species which were the most abundant and frequent in the area. The first three Principal Component Analyses (PCAs) explained 50.91% of the data variance showing that the area is structured by two groups: one offshore composed by oligotrophic indicators, and another nearshore influenced by continental fluxes.


2016 ◽  
Vol 120 ◽  
pp. 245-254 ◽  
Author(s):  
Bradley F. Blackwell ◽  
Travis L. DeVault ◽  
Esteban Fernández-Juricic ◽  
Eric M. Gese ◽  
Lynne Gilbert-Norton ◽  
...  

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