Pangolins in global camera trap data: Implications for ecological monitoring
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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Pangolins in global camera trap data : Implications for ecological monitoring. / Khwaja, Hannah; Buchan, Claire; Wearn, Oliver R.; Bahaa-el-din, Laila; Bantlin, Drew; Bernard, Henry; Bitariho, Robert; Bohm, Torsten; Borah, Jimmy; Brodie, Jedediah; Chutipong, Wanlop; Preez, Byron du; Ebang-Mbele, Alex; Edwards, Sarah; Fairet, Emilie; Frechette, Jackson L.; Garside, Adrian; Gibson, Luke; Giordano, Anthony; Veeraswami Gopi, Govindan; Granados, Alys; Gubbi, Sanjay; Harich, Franziska; Haurez, Barbara; Havmøller, Rasmus W.; Helmy, Olga; Isbell, Lynne A.; Jenks, Kate; Kalle, Riddhika; Kamjing, Anucha; Khamcha, Daphawan; Kiebou-Opepa, Cisquet; Kinnaird, Margaret; Kruger, Caroline; Laudisoit, Anne; Lynam, Antony; Macdonald, Suzanne E.; Mathai, John; Sienne, Julia Metsio; Meier, Amelia; Mills, David; Mohd-Azlan, Jayasilan; Nakashima, Yoshihiro; Nash, Helen C.; Ngoprasert, Dusit; Nguyen, An; O'Brien, Tim; Olson, David; Orbell, Christopher; Poulsen, John; Ramesh, Tharmalingam; Reeder, Dee Ann; Reyna, Rafael; Rich, Lindsey N.; Rode-Margono, Johanna; Rovero, Francesco; Sheil, Douglas; Shirley, Matthew H.; Stratford, Ken; Sukumal, Niti; Suwanrat, Saranphat; Tantipisanuh, Naruemon; Tilker, Andrew; Van Berkel, Tim; Van der Weyde, Leanne K.; Varney, Matthew; Weise, Florian; Wiesel, Ingrid; Wilting, Andreas; Wong, Seth T.; Waterman, Carly; Challender, Daniel W.S.
I: Global Ecology and Conservation, Bind 20, e00769, 10.2019.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Pangolins in global camera trap data
T2 - Implications for ecological monitoring
AU - Khwaja, Hannah
AU - Buchan, Claire
AU - Wearn, Oliver R.
AU - Bahaa-el-din, Laila
AU - Bantlin, Drew
AU - Bernard, Henry
AU - Bitariho, Robert
AU - Bohm, Torsten
AU - Borah, Jimmy
AU - Brodie, Jedediah
AU - Chutipong, Wanlop
AU - Preez, Byron du
AU - Ebang-Mbele, Alex
AU - Edwards, Sarah
AU - Fairet, Emilie
AU - Frechette, Jackson L.
AU - Garside, Adrian
AU - Gibson, Luke
AU - Giordano, Anthony
AU - Veeraswami Gopi, Govindan
AU - Granados, Alys
AU - Gubbi, Sanjay
AU - Harich, Franziska
AU - Haurez, Barbara
AU - Havmøller, Rasmus W.
AU - Helmy, Olga
AU - Isbell, Lynne A.
AU - Jenks, Kate
AU - Kalle, Riddhika
AU - Kamjing, Anucha
AU - Khamcha, Daphawan
AU - Kiebou-Opepa, Cisquet
AU - Kinnaird, Margaret
AU - Kruger, Caroline
AU - Laudisoit, Anne
AU - Lynam, Antony
AU - Macdonald, Suzanne E.
AU - Mathai, John
AU - Sienne, Julia Metsio
AU - Meier, Amelia
AU - Mills, David
AU - Mohd-Azlan, Jayasilan
AU - Nakashima, Yoshihiro
AU - Nash, Helen C.
AU - Ngoprasert, Dusit
AU - Nguyen, An
AU - O'Brien, Tim
AU - Olson, David
AU - Orbell, Christopher
AU - Poulsen, John
AU - Ramesh, Tharmalingam
AU - Reeder, Dee Ann
AU - Reyna, Rafael
AU - Rich, Lindsey N.
AU - Rode-Margono, Johanna
AU - Rovero, Francesco
AU - Sheil, Douglas
AU - Shirley, Matthew H.
AU - Stratford, Ken
AU - Sukumal, Niti
AU - Suwanrat, Saranphat
AU - Tantipisanuh, Naruemon
AU - Tilker, Andrew
AU - Van Berkel, Tim
AU - Van der Weyde, Leanne K.
AU - Varney, Matthew
AU - Weise, Florian
AU - Wiesel, Ingrid
AU - Wilting, Andreas
AU - Wong, Seth T.
AU - Waterman, Carly
AU - Challender, Daniel W.S.
PY - 2019/10
Y1 - 2019/10
N2 - Despite being heavily exploited, pangolins (Pholidota: Manidae) have been subject to limited research, resulting in a lack of reliable population estimates and standardised survey methods for the eight extant species. Camera trapping represents a unique opportunity for broad-scale collaborative species monitoring due to its largely non-discriminatory nature, which creates considerable volumes of data on a relatively wide range of species. This has the potential to shed light on the ecology of rare, cryptic and understudied taxa, with implications for conservation decision-making. We undertook a global analysis of available pangolin data from camera trapping studies across their range in Africa and Asia. Our aims were (1) to assess the utility of existing camera trapping efforts as a method for monitoring pangolin populations, and (2) to gain insights into the distribution and ecology of pangolins. We analysed data collated from 103 camera trap surveys undertaken across 22 countries that fell within the range of seven of the eight pangolin species, which yielded more than half a million trap nights and 888 pangolin encounters. We ran occupancy analyses on three species (Sunda pangolin Manis javanica, white-bellied pangolin Phataginus tricuspis and giant pangolin Smutsia gigantea). Detection probabilities varied with forest cover and levels of human influence for P. tricuspis, but were low (<0.05) for all species. Occupancy was associated with distance from rivers for M. javanica and S. gigantea, elevation for P. tricuspis and S. gigantea, forest cover for P. tricuspis and protected area status for M. javanica and P. tricuspis. We conclude that camera traps are suitable for the detection of pangolins and large-scale assessment of their distributions. However, the trapping effort required to monitor populations at any given study site using existing methods appears prohibitively high. This may change in the future should anticipated technological and methodological advances in camera trapping facilitate greater sampling efforts and/or higher probabilities of detection. In particular, targeted camera placement for pangolins is likely to make pangolin monitoring more feasible with moderate sampling efforts.
AB - Despite being heavily exploited, pangolins (Pholidota: Manidae) have been subject to limited research, resulting in a lack of reliable population estimates and standardised survey methods for the eight extant species. Camera trapping represents a unique opportunity for broad-scale collaborative species monitoring due to its largely non-discriminatory nature, which creates considerable volumes of data on a relatively wide range of species. This has the potential to shed light on the ecology of rare, cryptic and understudied taxa, with implications for conservation decision-making. We undertook a global analysis of available pangolin data from camera trapping studies across their range in Africa and Asia. Our aims were (1) to assess the utility of existing camera trapping efforts as a method for monitoring pangolin populations, and (2) to gain insights into the distribution and ecology of pangolins. We analysed data collated from 103 camera trap surveys undertaken across 22 countries that fell within the range of seven of the eight pangolin species, which yielded more than half a million trap nights and 888 pangolin encounters. We ran occupancy analyses on three species (Sunda pangolin Manis javanica, white-bellied pangolin Phataginus tricuspis and giant pangolin Smutsia gigantea). Detection probabilities varied with forest cover and levels of human influence for P. tricuspis, but were low (<0.05) for all species. Occupancy was associated with distance from rivers for M. javanica and S. gigantea, elevation for P. tricuspis and S. gigantea, forest cover for P. tricuspis and protected area status for M. javanica and P. tricuspis. We conclude that camera traps are suitable for the detection of pangolins and large-scale assessment of their distributions. However, the trapping effort required to monitor populations at any given study site using existing methods appears prohibitively high. This may change in the future should anticipated technological and methodological advances in camera trapping facilitate greater sampling efforts and/or higher probabilities of detection. In particular, targeted camera placement for pangolins is likely to make pangolin monitoring more feasible with moderate sampling efforts.
KW - Camera trap
KW - Detection
KW - Macroecology
KW - Monitoring
KW - Occupancy modelling
KW - Pangolin
U2 - 10.1016/j.gecco.2019.e00769
DO - 10.1016/j.gecco.2019.e00769
M3 - Journal article
AN - SCOPUS:85072190559
VL - 20
JO - Global Ecology and Conservation
JF - Global Ecology and Conservation
SN - 2351-9894
M1 - e00769
ER -
ID: 230202427