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Oppel, S., Eisler, R., Aspey, N. 2024. Population status of the endemic Pitcairn Reed Warbler on Pitcairn Island, South Pacific. Bird Conservation International in press.

Witczak, S., Kormann, U., Schaub, M., Oppel, S., Grüebler, M.U., 2024. Sex and size shape the ontogeny of partial migration. Journal of Animal Ecology in press.

Oppel, S., Dobrev, V., Arkumarev, V., Saravia-Mullin, V., Bashmili, K., Bino, T., Bounas, A., Chardin, A., Dobrev, D., Duro, K., Kapsalis, E., Kret, E., Marchant, M.-P., Nakev, S., Petrovski, N., Papaioannou, H., Popgeorgiev, G., Selgjekaj, L., Skartsi, T., Stamenov, A., Stoychev, S., Topi, M., Vavylis, D., Velevski, M., Vorpsi, Z., Weston, J., Xeka, E., Xherri, X., Yordanov, E., Nikolov, S.C., 2023. Long-term conservation efforts at flyway scale can halt the population decline in a globally endangered migratory raptor. Animal Conservation in press.

Connan, M., Jones, C. W., Risi, M. M., Smyth, L. K., Oppel, S., Perold, V., Stevens, K. L., Daling, R., and Ryan, P. G. 2023. First evidence of mouse predation killing adult great albatrosses. Biological Invasions in press.


Rouxel, Y., Arnardóttir, H., and Oppel, S. 2023. Looming-eyes buoys fail to reduce seabird bycatch in the Icelandic lumpfish fishery: depth-based fishing restrictions are an alternative. Royal Society Open Science 10: 230783.


McClure, C.J.W., Berkunsky, I., Buechley, E.R., Dunn, L., Johnson, J., McCabe, J., Oppel, S., Rolek, B.W., Sutton, L.J., Gumbs, R., 2024. Conserving the evolutionary history of birds. Conservation Biology in press: e14141.


Smith, R.K., Morgan, W.H., Al-Fulaij, N., Amano, T., Bowkett, A.E., Christie, A., Downey, H., Frick, W.F., O'Brien, D., Ockendon, N., Oppel, S., Petrovan, S.O., Righton, D., Tinsley-Marshall, P., Worthington, T.A., Sutherland, W.J., 2023. Co-designing a toolkit for evidence-based decision making in conservation: Processes and lessons. Ecological Solutions and Evidence 4: e12269.


Bounas, A., Saravia-Mullin, V., Méndez, M., Arkumarev, V., Aghajanyan, L., Ararat, K., Buechley, E., Dobrev, V., Dobrev, D., Efrat, R., Klisurov, I., Kret, E., Skartsi, T., Oppel, S., Petrov, R., Şekercioğlu, Ç.H., Vaidl, A., Donázar, J.A., Nikolov, S.C., Sotiropoulos, K., 2023. Assessing genetic diversity patterns at neutral and adaptive loci to inform population reinforcement of an endangered migratory vulture. Journal of Ornithology 164: 677-688.


Häkkinen, H., Taylor, N.G., Pettorelli, N., Sutherland, W.J., Aldará, J., Anker-Nilssen, T., Aulert, C., van Bemmelen, R.S.A., Burnell, D., Cadiou, B., Campioni, L., Clark, B.L., Dehnhard, N., Dias, M.P., Enners, L., Furness, R.W., Hallgrímsson, G.Þ., Hammer, S., Hansen, E.S., Hario, M., Hurling, S., Jessopp, M., Kleinschmidt, B., Leivits, M., Maniszewska, K., Oppel, S., Payo-Payo, A., Piec, D., Ramos, J.A., Robin, F., Sørensen, I.H., Stīpniece, A., Thompson, D.L., Vulcano, A., Petrovan, S., 2023. Co-developing guidance for conservation: An example for seabirds in the North-East Atlantic in the face of climate change impacts. Conservation Science and Practice: e12985.


Austad, M., Oppel, S., Crymble, J., Greetham, H., Sahin, D., Lago, P., Metzger, B., Quillfeldt, P. 2023. The effects of temporally distinct light pollution from ships on nocturnal colony attendance in a threatened seabird. Journal of Ornithology: 164: 527–536.


Beal, M., Catry, P., Phillips, R.A., Oppel, S., Arnould, J.P.Y., Bogdanova, M.I., Bolton, M., Carneiro, A.P.B., Clatterbuck, C., Conners, M., Daunt, F., Delord, K., Elliott, K., Fromant, A., Granadeiro, J.P., Green, J.A., Halsey, L., Hamer, K.C., Ito, M., Jeavons, R., Kim, J.-H., Kokubun, N., Koyama, S., Lane, J.V., Lee, W.Y., Matsumoto, S., Orben, R.A., Owen, E., Paiva, V.H., Patterson, A., Pollock, C.J., Ramos, J.A., Sagar, P., Sato, K., Shaffer, S.A., Soanes, L., Takahashi, A., Thompson, D.R., Thorne, L., Torres, L., Watanuki, Y., Waugh, S.M., Weimerskirch, H., Whelan, S., Yoda, K., Xavier, J.C., Dias, M.P., 2023. Quantifying annual spatial consistency in chick-rearing seabirds to inform important site identification. Biological Conservation 281: 109994.


Beard, A., Thomas, R., Clingham, E., Henry, L., Medeiros, R., Oppel, S., Small, A., Hailer, F., 2023. Increasing use of artificial nest chambers by seasonally segregated populations of band-rumped storm petrels Hydrobates castro at St Helena, South Atlantic. Marine Ornithology 51: 85-96.


Guilherme, J. L., Jones, V. R., Catry, I., Beal, M., Dias, M. P., Oppel, S., Vickery, J. et al. 2023. Connectivity between countries established by landbirds and raptors migrating along the African-Eurasian flyway. Conservation Biology in press.


Noby, K., Mossad, H., Din, S.B.E., Elbolkiny, N., Abdalla, T., Jobson, B., Williams, J., Gemerden, B.v., Weston, J., Hayward, W., Chandra, S., Arkumarev, V., Dobrev, V., Ivanova, E., Nikolov, S., Oppel, S., 2022. Globally important proportions of six raptor populations migrate past Galala Bird Observatory, Egypt, in spring. Sandgrouse 44: 410-420.

Oppel, S., Clark, B. L., Risi, M. M., Horswill, C., Converse, S. J., Jones, C. W., Osborne, A. M., Stevens, K., Perold, V., Bond, A. L., Wanless, R. M., Cuthbert, R., Cooper, J., & Ryan, P. G. 2022. Cryptic population decrease due to invasive species predation in a long-lived seabird supports need for eradication. Journal of Applied Ecology 59: 2059-2070.

Ryan, P., and Oppel, S. 2022. Notes on the seabirds of Gough Island and at sea between Gough and Cape Town, March–June 2021. Afrotropical Bird Biology 2: 3.

Morkunas, J., Oppel, S., Bruzas, M., Rouxel, Y., Morkune, R., Mitchell, D., 2022. Seabird bycatch in a Baltic coastal gillnet fishery is orders of magnitude larger than official reports. Avian Conservation and Ecology 17.

Gauld, J.G., Silva, J.P., Atkinson, P.W., Record, P., Acácio, M., Arkumarev, V., Blas, J., Bouten, W., Burton, N., Catry, I., Champagnon, J., Clewley, G.D., Dagys, M., Duriez, O., Exo, K.-M., Fiedler, W., Flack, A., Friedemann, G., Fritz, J., Garcia-Ripolles, C., Garthe, S., Giunchi, D., Grozdanov, A., Harel, R., Humphreys, E.M., Janssen, R., Kölzsch, A., Kulikova, O., Lameris, T.K., López-López, P., Masden, E.A., Monti, F., Nathan, R., Nikolov, S., Oppel, S., Peshev, H., Phipps, L., Pokrovsky, I., Ross-Smith, V.H., Saravia, V., Scragg, E.S., Sforzi, A., Stoynov, E., Thaxter, C., Van Steelant, W., van Toor, M., Vorneweg, B., Waldenström, J., Wikelski, M., Žydelis, R., Franco, A.M.A., 2022. Hotspots in the grid: Avian sensitivity and vulnerability to collision risk from energy infrastructure interactions in Europe and North Africa. Journal of Applied Ecology 59: 1496-1512.


Hakkinen, H., Petrovan, S.O., Sutherland, W.J., Dias, M.P., Ameca, E.I., Oppel, S., Ramírez, I., Lawson, B., Lehikoinen, A., Bowgen, K.M., Taylor, Nigel G., Pettorelli, N., 2022. Linking climate change vulnerability research and evidence on conservation action effectiveness to safeguard European seabird populations. Journal of Applied Ecology 59: 1178-1186.


Carneiro, A. P. B., Dias, M. P., Oppel, S., Pearmain, E. J., Clark, B. L., Wood, A. G., Clavelle, T., and Phillips, R. A. 2022. Integrating immersion with GPS data improves behavioural classification for wandering albatrosses and shows scavenging behind fishing vessels mirrors natural foraging. Animal Conservation 25: 627-637.

Ryan, P.G., Oppel, S., 2022. Winter colony attendance by adult Southern Giant Petrels Macronectes giganteus: implications for rodent eradications. Marine Ornithology 50: 1-4.

Oppel, S., Ruffo, A.D., Bakari, S., Tesfaye, M., Mengistu, S., Wondafrash, M., Endris, A., Pourchier, C., Ngari, A., Arkumarev, V., Nikolov, S.C., 2022. Pursuit of ‘sustainable’ development may contribute to vulture crisis in East Africa. Bird Conservation International 32: 173-187.


Oppel, S., Buechley, E.R., López-López, P., Phipps, L., Arkumarev, V., Bounas, A., Williams, F., Dobrev, V., Dobrev, D., Stoychev, S., Kret, E., Cenerini, A., Ceccolini, G., Saravia, V., Nikolov, S.C., 2022. Egyptian Vulture Neophron percnopterus, In Migration Strategies of Birds of Prey in Western Palearctic. Eds Panuccio, M., Mellone, U., Agostini, N., pp. 22-34. CRC Press, Boca Raton, FL.


Kettel, E.F., Thaxter, C., Oppel, S., Carryer, A., Innis, L., Pearce-Higgins, J.W., 2022. Better utilisation and transparency of bird data collected by powerline companies. Journal of Environmental Management 302: 114063.


Beal, M., Oppel, S., Handley, J., Pearmain, E.J., Morera-Pujol, V., Carneiro, A.P., Davies, T.E., Phillips, R.A., Taylor, P.R., Miller, M.G., Franco, A.M.A., Catry, I., Patrício, A.R., Regalla, A., Staniland, I., Boyd, C., Catry, P. and Dias, M.P., 2021. track2KBA: An R package for identifying important sites for biodiversity from tracking data. Methods in Ecology and Evolution 12: 2372-2378.


Oppel, S., Arkumarev, V., Bakari, S., Dobrev, V., Saravia-Mullin, V., Adefolu, S., Sözüer, L.A., Apeverga, P.T., Arslan, Ş., Barshep, Y., Bino, T., Bounas, A., Çetin, T., Dayyoub, M., Dobrev, D., Duro, K., El-Moghrabi, L., ElSafoury, H., Endris, A., Asswad, N.G., Harry, J.H., Ivande, S.T., Jbour, S., Kapsalis, E., Kret, E., Mahamued, B.A., Manu, S.A., Mengistu, S., Moussa Zabeirou, A.R., Muhammad, S.I., Nakev, S., Ngari, A., Onoja, J., Osta, M., Özuslu, S., Petrovski, N., Popgeorgiev, G., Pourchier, C., Qaneer, T., Ruffo, A., Shobrak, M., Sidiropoulos, L., Skartsi, T., Sözüer, Ö., Stara, K., Tesfaye, M., Topi, M., Vavylis, D., Velevski, M., Vorpsi, Z., Wondafrash, M., Xeka, E., Yeniyurt, C., Yordanov, E., Nikolov, S.C., 2021. Major threats to a migratory raptor vary geographically along the eastern Mediterranean flyway. Biological Conservation: 109277.


Oppel, S., Saravia, V., Bounas, A., Arkumarev, V., Kret, E., Dobrev, V., Dobrev, D., Kordopatis, P., Skartsi, T., Velevski, M., Petrovski, N., Bino, T., Topi, M., Klisurov, I., Stoychev, S., Nikolov, S., 2021. Population reinforcement and demographic changes needed to stabilise the population of a migratory vulture. Journal of Applied Ecology 58: 2711-2721.

Rouxel, Y., Crawford, R., Cleasby, I.R., Kibel, P., Owen, E., Volke, V., Schnell, A.K., Oppel, S., 2021. Buoys with looming eyes deter seaducks and could potentially reduce seabird bycatch in gillnets. Royal Society Open Science 8: 210225.


Buechley, E.R., Oppel, S., Efrat, R., Phipps, W.L., Carbonell Alanís, I., Álvarez, E., Andreotti, A., Arkumarev, V., Berger-Tal, O., Bermejo Bermejo, A., Bounas, A., Ceccolini, G., Cenerini, A., Dobrev, V., Duriez, O., García, J., García-Ripollés, C., Galán, M., Gil, A., Giraud, L., Hatzofe, O., Iglesias-Lebrija, J.J., Karyakin, I., Kobierzycki, E., Kret, E., Loercher, F., López-López, P., Miller, Y., Mueller, T., Nikolov, S.C., de la Puente, J., Sapir, N., Saravia, V., Şekercioğlu, Ç.H., Sillett, T.S., Tavares, J., Urios, V., Marra, P.P., 2021. Differential survival throughout the full annual cycle of a migratory bird presents a life-history trade-off. Journal of Animal Ecology 90: 1228-1238.

Jobson, B., Allinson, T., Sheldon, R., Vansteelant, W., Buechley, E., Oppel, S., Jones, V.R., 2021. Monitoring of migratory soaring birds in the East African-Eurasian flyway: a review and recommendations for future steps. Sandgrouse 43: 2-23.

Beal, M., Dias, M.P., Phillips, R.A., Oppel, S., Hazin, C., Pearmain, E.J., Adams, J., Anderson, D.J., Antolos, M., Arata, J.A., Arcos, J.M., Arnould, J.P.Y., Awkerman, J., Bell, E., Bell, M., Carey, M., Carle, R., Clay, T.A., Cleeland, J., Colodro, V., Conners, M., Cruz-Flores, M., Cuthbert, R., Delord, K., Deppe, L., Dilley, B.J., Dinis, H., Elliott, G., De Felipe, F., Felis, J., Forero, M.G., Freeman, A., Fukuda, A., González-Solís, J., Granadeiro, J.P., Hedd, A., Hodum, P., Igual, J.M., Jaeger, A., Landers, T.J., Le Corre, M., Makhado, A., Metzger, B., Militão, T., Montevecchi, W.A., Morera-Pujol, V., Navarro-Herrero, L., Nel, D., Nicholls, D., Oro, D., Ouni, R., Ozaki, K., Quintana, F., Ramos, R., Reid, T., Reyes-González, J.M., Robertson, C., Robertson, G., Romdhane, M.S., Ryan, P.G., Sagar, P., Sato, F., Schoombie, S., Scofield, R.P., Shaffer, S.A., Shah, N.J., Stevens, K.L., Surman, C., Suryan, R.M., Takahashi, A., Tatayah, V., Taylor, G., Thompson, D.R., Torres, L., Walker, K., Wanless, R., Waugh, S.M., Weimerskirch, H., Yamamoto, T., Zajkova, Z., Zango, L., Catry, P., 2021. Global political responsibility for the conservation of albatrosses and large petrels. Science Advances 7: eabd7225.


Shobrak, M., Alasmari, S., Alqthami, A., Alqthami, F., Al-Otaibi, A., Zoubi, M.A., Moghrabi, L.E., Jbour, S., Asswad, N.G., Oppel, S., Arkumarev, V., Nikolov, S.C., 2021. Electric infrastructure poses a significant threat at congregation sites of the globally threatened Steppe Eagle Aquila nipalensis in Saudi Arabia. Bird Conservation International: in press.


Jones, C.W., Risi, M.M., Osborne, A.M., Ryan, P.G., Oppel, S., 2021. Mouse eradication is required to prevent local extinction of an endangered seabird on an oceanic island. Animal Conservation 24: 637-645.

Risi, M.M., Jones, C.W., Osborne, A.M., Steinfurth, A., Oppel, S., 2021. Southern Giant Petrels Macronectes giganteus depredating breeding Atlantic Yellow-nosed Albatrosses Thalassarche chlororhynchos on Gough Island. Polar Biology 44: 593–599.

Hart, K., Oppel, S., Blackburn, A., Humphries, G. R. W., Nam, K.-B., 2021. Estimating Streaked Shearwater Calonectris leucomelas abundance in the Republic of Korea using automated acoustic recorders. Marine Ornithology 49: 109-117.


Da Rocha, N., Oppel, S., Prince, S., Matjila, S., Shaanika, T.M., Naomab, C., Yates, O., Paterson, J.R.B., Shimooshili, K., Frans, E., Kashava, S., Crawford, R., 2021. Reduction in seabird mortality in Namibian fisheries following the introduction of bycatch regulation. Biological Conservation 253: 108915.

Oppel, S., Margalida, A.  2020. Egyptian Vulture Neophron percnopterus. In: Keller, V., Herrando, S., Voříšek, P., Franch, M., Kipson, M., Milanesi, P., Martí, D., Anton, M., Klvaňová, A., Kalyakin, M. V., Bauer, H.-G. & Foppen, R. P. B.. European Breeding Bird Atlas 2: Distribution, Abundance and Change. European Bird Census Council & Lynx Ediciones, Barcelona.


Mallon, J.M., Tucker, M.A., Beard, A., Bierregaard Jr., R.O., Bildstein, K.L., Böhning-Gaese, K., Brzorad, J.N., Buechley, E.R., Bustamante, J., Carrapato, C., Castillo-Guerrero, J.A., Clingham, E., Desholm, M., DeSorbo, C.R., Domenech, R., Douglas, H., Duriez, O., Enggist, P., Farwig, N., Fiedler, W., Gagliardo, A., García-Ripollés, C., Gil Gallús, J.A., Gilmour, M.E., Harel, R., Harrison, A.-L., Henry, L., Katzner, T.E., Kays, R., Kleyheeg, E., Limiñana, R., López-López, P., Lucia, G., Maccarone, A., Mallia, E., Mellone, U., Mojica, E.K., Nathan, R., Newman, S.H., Oppel, S., Orchan, Y., Prosser, D.J., Riley, H., Rösner, S., Schabo, D.G., Schulz, H., Shaffer, S., Shreading, A., Silva, J.P., Sim, J., Skov, H., Spiegel, O., Stuber, M.J., Takekawa, J.Y., Urios, V., Vidal-Mateo, J., Warner, K., Watts, B.D., Weber, N., Weber, S., Wikelski, M., Žydelis, R., Mueller, T., Fagan, W.F., 2020. Diurnal timing of nonmigratory movement by birds: the importance of foraging spatial scales. Journal of Avian Biology 51.


Steinfurth, A., Oppel, S., Dias, M. P., Starnes, T., Pearmain, E. J., Dilley, B. J., Davies, D., Nydegger, M., Bell, C., Le Bouard, F., Bond, A. L., Cuthbert, R. J., Glass, T., Makhado, A. B., Crawford, R. J. M., Ryan, P. G., Wanless, R. M., Ratcliffe, N. 2020. Important marine areas for the conservation of northern rockhopper penguins within the Tristan da Cunha Exclusive Economic Zone. Endangered Species Research 43: 409–420.

Jones, C.W., Risi, M.M., Osborne, A.M., Parker, G.C., Rexer-Huber, K., Le Bouard, F., Cleeland, J.B., Lawrence, K., Kinchin-Smith, D., Witcutt, E., Starnes, T., Bond, A.L., Ryan, P.G., Oppel, S., 2020. Abundance, distribution and breeding success of the endemic Gough Island Finch Rowettia goughensis between 2009 and 2018. Emu - Austral Ornithology 120: 230-238.


Shobrak, M., Alasmari, S., Alqthami, A., Alqthami, F., Al-Otaibi, A., Al Zoubi, M., El Moghrabi, L., Jbour, S., Arkumarev, V., Oppel, S., Ghazal Asswad, N., Nikolov, S. C.. 2020. Congregations and threats of migratory Egyptian Vultures Neophron percnopterus along the southwest coast of Saudi Arabia. Sandgrouse 42: 248-258.


Handley, J., Pearmain, E., Oppel, S., Carneiro, A., Hazin, C., Phillips, R.A., Ratcliffe, N., Staniland, I., Clay, T., Hall, J., Scheffer, A., Fedak, M., Boehme, L., Pütz, K., Belchier, M., Boyd, I., Trathan, P.N., Dias, M., 2020. Evaluating the effectiveness of a large multi-use MPA in protecting key biodiversity areas for marine predators. Diversity and Distributions in press.


Samaniego, A., Griffiths, R., Gronwald, M., Holmes, N.D., Oppel, S., Stevenson, B.C., Russell, J.C., 2020. Risks posed by rat reproduction and diet to eradications on tropical islands. Biological Invasions 22: 1365–1378.

Requena, S., Oppel, S., Bond, A.L., Hall, J., Cleeland, J., Crawford, R.J.M., Davies, D., Dilley, B.J., Glass, T., Makhado, A., Ratcliffe, N., Reid, T.A., Ronconi, R.A., Schofield, A., Steinfurth, A., Wege, M., Bester, M., Ryan, P.G., 2020. Marine hotspots of activity inform protection of a threatened community of pelagic species in a large oceanic jurisdiction. Animal Conservation 23: 585–596.


Samaniego, A., Griffiths, R., Gronwald, M., Murphy, F., Le Rohellec, M., Oppel, S., Meyer, J-Y. & Russell, J. C., 2020. A successful Pacific rat Rattus exulans eradication on tropical Reiono Island (Tetiaroa Atoll, French Polynesia) despite low baiting rates. Conservation Evidence 17: 12-13.

Carneiro, A.P.B., Pearmain, E.J., Oppel, S., Clay, T.A., Phillips, R.A., Bonnet-Lebrun, A.-S., Wanless, R.M., Abraham, E., Richard, Y., Rice, J., Handley, J., Davies, T.E., Dilley, B.J., Ryan, P.G., Small, C., Arata, J., Arnould, J.P.Y., Bell, E., Bugoni, L., Campioni, L., Catry, P., Cleeland, J., Deppe, L., Elliott, G., Freeman, A., González-Solís, J., Granadeiro, J.P., Grémillet, D., Landers, T.J., Makhado, A., Nel, D., Nicholls, D.G., Rexer-Huber, K., Robertson, C.J.R., Sagar, P.M., Scofield, P., Stahl, J.-C., Stanworth, A., Stevens, K.L., Trathan, P.N., Thompson, D.R., Torres, L., Walker, K., Waugh, S.M., Weimerskirch, H., Dias, M.P., 2020. A framework for mapping the distribution of seabirds by integrating tracking, demography and phenology. Journal of Applied Ecology 57: 514– 525.


Phipps, W.L., López-López, P., Buechley, E.R., Oppel, S., Álvarez, E., Arkumarev, V., Bekmansurov, R., Berger-Tal, O., Bermejo, A., Bounas, A., Alanís, I.C., de la Puente, J., Dobrev, V., Duriez, O., Efrat, R., Fréchet, G., García, J., Galán, M., García-Ripollés, C., Gil, A., Iglesias-Lebrija, J.J., Jambas, J., Karyakin, I.V., Kobierzycki, E., Kret, E., Loercher, F., Monteiro, A., Morant Etxebarria, J., Nikolov, S.C., Pereira, J., Peške, L., Ponchon, C., Realinho, E., Saravia, V., Sekercioğlu, C.H., Skartsi, T., Tavares, J., Teodósio, J., Urios, V., Vallverdú, N., 2019. Spatial and temporal variability in migration of a soaring raptor across three continents. Frontiers in Ecology and Evolution 7.


Oppel, S., Havery, S., John, L., Bambini, L., Varnham, K., Dawson, J., Radford, E., 2019. Maximising conservation impact by prioritising islands for biosecurity. In: Island invasives: scaling up to meet the challenge. Eds. Veitch, C.R., Clout, M.N., Martin, A.R., Russell, J.C., West, C.J., pp. 663-669. IUCN, Gland, Switzerland.

Holmes, N.D., Spatz, D.R., Oppel, S., Tershy, B., Croll, D.A., Keitt, B., Genovesi, P., Burfield, I.J., Will, D.J., Bond, A.L., Wegmann, A., Aguirre-Muñoz, A., Raine, A.F., Knapp, C.R., Hung, C.-H., Wingate, D., Hagen, E., Méndez-Sánchez, F., Rocamora, G., Yuan, H.-W., Fric, J., Millett, J., Russell, J., Liske-Clark, J., Vidal, E., Jourdan, H., Campbell, K., Springer, K., Swinnerton, K., Gibbons-Decherong, L., Langrand, O., Brooke, M.d.L., McMinn, M., Bunbury, N., Oliveira, N., Sposimo, P., Geraldes, P., McClelland, P., Hodum, P., Ryan, P.G., Borroto-Páez, R., Pierce, R., Griffiths, R., Fisher, R.N., Wanless, R., Pasachnik, S.A., Cranwell, S., Micol, T., Butchart, S.H.M., 2019. Globally important islands where eradicating invasive mammals will benefit highly threatened vertebrates. PLoS ONE 14: e0212128.


Oppel, S., McClelland, G.T.W., Lavers, J.L., Churchyard, T., Donaldson, A., Duffield, N., Havery, S., Kelly, J., Proud, T., Russell, J.C., Bond, A.L., 2019. Seasonal variation in movements and survival of invasive Pacific rats on sub-tropical Henderson Island: implications for eradication. In: Island invasives: scaling up to meet the challenge. Eds. Veitch, C.R., Clout, M.N., Martin, A.R., Russell, J.C., West, C.J., pp. 200-208. IUCN, Gland, Switzerland.

Heerah, K., Dias, M.P., Delord, K., Oppel, S., Barbraud, C., Weimerskirch, H., Bost, C.A., 2019. Important areas and conservation sites for a community of globally threatened marine predators of the Southern Indian Ocean. Biological Conservation 234: 192-201.


Bond, A.L., Churchyard, T., Cuthbert, R.J., Donaldson, A., Duffield, N., Forrest, A., Havery, S., Lavers, J.L., MacKinnon, L., McClelland, G.T.W., Kelly, J., Proud, T., Skinner, A., Torr, N., Vickery, J.A., Oppel, S., 2019. Recovery of introduced Pacific rats (Rattus exulans) following a failed eradication attempt on subtropical Henderson Island, South Pacific Ocean. In: Island invasives: scaling up to meet the challenge. Eds. Veitch, C.R., Clout, M.N., Martin, A.R., Russell, J.C., West, C.J., pp. 167-174. IUCN, Gland, Switzerland.

Field, R., Crawford, R., Enever, R., Linkowski, T., Martin, G., Morkūnas, J., Morkūnė, R., Rouxel, Y., Oppel, S., 2019. High contrast panels and lights do not reduce bird bycatch in Baltic Sea gillnet fisheries. Global Ecology and Conservation: e00602.


Bond, A.L., Brooke, M. de L., Cuthbert, R.J., Lavers, J.L., McClelland, G.T.W., Churchyard, T., Donaldson, A., Duffield, N., Forrest, A., Harrison, G., Mackinnon, L., Proud, T., Skinner, A., Torr, N., Vickery, J.A., Oppel, S., 2019. Population status of four endemic land bird species after an unsuccessful rodent eradication on Henderson Island. Bird Conservation International 29: 124-135.


Katzenberger, J., Tabur, E., Sen, B., Isfendiyaroğlu, S., Erkol, I.L., Oppel, S., 2019. No short-term effect of closing a rubbish dump on reproductive parameters of an Egyptian Vulture population in Turkey. Bird Conservation International 29: 71-82.

Tucker, M. et al., 2019. Large birds travel farther in homogeneous environments. Global Ecology and Biogeography 28: 576-587.

Clay, T. A.., Oppel, S., Lavers, J.L., Phillips, R. A., Brooke, M. de L., 2019. Divergent foraging strategies during incubation of an unusually wide-ranging seabird, the Murphy's petrel. Marine Biology 166:8.

Oppel, S., Bolton, M., Carneiro, A.P.B., Dias, M.P., Green, J.A., Masello, J.F., Phillips, R.A., Owen, E., Quillfeldt, P., Beard, A., Bertrand, S., Blackburn, J., Boersma, P.D., Borges, A., Broderick, A.C., Catry, P., Cleasby, I., Clingham, E., Creuwels, J., Crofts, S., Cuthbert, R.J., Dallmeijer, H., Davies, D., Davies, R., Dilley, B., Dinis, H.A., Dossa, J., Dunn, M.J., Efe, M.A., Fayet, A.L., Figueiredo, L., Frederico, A.P., Gjerdrum, C., Godley, B.J., Granadeiro, J.P., Guilford, T., Hamer, K.C., Hazin, C., Hedd, A., Henry, L., Hernández-Montero, M., Hinke, J., Kokubun, N., Leat, E., McFarlane-Tranquilla, L., Metzger, B., Militão, T., Montrond, G., Mullié, W., Padget, O., Pearmain, E., Pollet, I.L., Puetz, K., Quintana, F., Ratcliffe, N., Ronconi, R.A., Ryan, P.G., Saldanha, S., Shoji, A., Sim, J., Small, C., Soanes, L., Takahashi, A., Trathan, P., Trivelpiece, W., Veen, J., Wakefield, E., Weber, N., Weber, S., Zango, L., Daunt, F., Ito, M.,
Harris, M. P., Newell, M. A., Wanless, S., González-Solís, J., Croxall, J., 2018. Spatial scales of marine conservation management for breeding seabirds. Marine Policy 98: 37-46.

Diop, N., Zango, L., Beard, A., Tidiane Ba, C., Ndiaye, P. I., Henry, L., Clingham, E., Oppel, S., González-Solís, J., 2018. Foraging ecology of tropicbirds breeding in two contrasting marine environments. Marine Ecology Progress Series 607: 221-236.

Huettmann, F., Craig, E., Herrick, K.,  Baltensperger, A., Humphries, G., Lieske, D., Miller, K., Mullet, T. Oppel, S., Resendiz, C., Rutzen, I., Schmid, M., Suwal, M., Young, B., 2018. Use of machine learning (ML) for predicting and analyzing ecological and ‘Presence Only’ data: An overview of applications and a good outlook. In: Machine learning for ecology and sustainable natural resource management. Eds. Humphries, G., Magness, D., Huettmann, F., pp. 27-62. SpringerNature, Switzerland.


Havery, S., Oppel, S., Cole, N., Duffield, N.D., 2018. Density of three skink species on a sub-tropical Pacific island estimated with hierarchical distance sampling. Herpetological Conservation and Biology 13: 507-516.


Yates, K.L., Bouchet, P.J., Caley, M.J., Mengersen, K., Randin, C.F., Parnell, S., Fielding, A.H., Bamford, A.J., Ban, S., Barbosa, A.M., Dormann, C.F., Elith, J., Embling, C.B., Ervin, G.N., Fisher, R., Gould, S., Graf, R.F., Gregr, E.J., Halpin, P.N., Heikkinen, R.K., Heinänen, S., Jones, A.R., Krishnakumar, P.K., Lauria, V., Lozano-Montes, H., Mannocci, L., Mellin, C., Mesgaran, M.B., Moreno-Amat, E., Mormede, S., Novaczek, E., Oppel, S., Ortuño Crespo, G., Peterson, A.T., Rapacciuolo, G., Roberts, J.J., Ross, R.E., Scales, K.L., Schoeman, D., Snelgrove, P., Sundblad, G., Thuiller, W., Torres, L.G., Verbruggen, H., Wang, L., Wenger, S., Whittingham, M.J., Zharikov, Y., Zurell, D., Sequeira, A.M.M., 2018. Outstanding challenges in the transferability of ecological models. Trends in Ecology & Evolution 33: 790-802.


Oppel, S., Vickery, J.A., Zavalishina, A., Smagulova, A.,Turebaev, A., 2018. Raptor inventory of the Karatau State Nature Reserve, southern Kazakhstan. Sandgrouse 40/4: 60-72.


Buechley, E.R., Oppel, S., Beatty, W.S., Nikolov, S.C., Dobrev, V., Arkumarev, V., Saravia, V., Bougain, C., Bounas, A., Kret, E., Skartsi, T., Aktay, L., Aghababyan, K., Frehner, E., Şekercioğlu, Ç.H., 2018. Identifying critical migratory bottlenecks and high‐use areas for an endangered migratory soaring bird across three continents. Journal of Avian Biology 49: e01629.

Bambini, L., Daley, J.R., Fenton, C., Gray, G.A.L., James, G., Martin, L., Mendes, S., Oppel, S., 2017. Current population status of four endemic Caribbean forest birds in Montserrat. Journal of Caribbean Ornithology 30: 2-9.

Oppel, S., Weber, S., Weber, N., Fox, D., Leat, E., Sim, J., Sommerfeld, J., Bolton, M., Broderick, A.C., Godley, B.J., 2017. Seasonal shifts in foraging distribution due to individual flexibility in a tropical pelagic forager, the Ascension Frigatebird. Marine Ecology Progress Series 585: 199-212.

Williams, S.M., Weber, S.B., Oppel, S., Leat, E.H.K., Sommerfeld, J., Godley, B.J., Weber, N., Broderick, A.C., 2017. Satellite telemetry reveals the first record of the Ascension Frigatebird (Fregata aquila) for the Americas. Wilson Journal of Ornithology 129: 600-604.


Dias, M.P., Oppel, S., Bond, A.L., Carneiro, A.P.B., Cuthbert, R.J., González-Solís, J., Wanless, R.M., Glass, T., Lascelles, B., Small, C., Phillips, R.A., Ryan, P.G., 2017. Using globally threatened pelagic birds to identify priority sites for marine conservation in the South Atlantic Ocean. Biological Conservation 211, Part A: 76-84.


Oppel, S., Lavers, J.L., Donaldson, A.H., Forrest, A.K., McClelland, G.T.W., Bond, A. L., Brooke, M. de L., 2017. Population status, breeding success and ecology of the Henderson Petrel after a failed rat eradication on Henderson Island. Emu 117: 151-159.


Yeniyurt, C., Oppel, S., Isfendiyaroglu, S., Ozkinaci, G., Erkol, I. L., Bowden, C. G. R., 2017. Influence of feeding ecology on breeding success of a semi-wild population of the critically endangered Northern Bald Ibis Geronticus eremita in southern Turkey. Bird Conservation International in press.

Stanbury, A., Thomas, S., Aegerter, J., Brown, A., Bullock, D., Eaton, M., Lock, L., Luxmoore, R., Roy, S., Whitaker, S., Oppel, S., 2017. Prioritising islands in the United Kingdom and crown dependencies for the eradication of invasive alien vertebrates and rodent biosecurity. European Journal of Wildlife Research 63: 31.


Oppel, S., Dobrev, V., Arkumarev, V., Saravia, V., Bounas, A., Manolopoulos, A., Kret, E., Velevski, M., Popgeorgiev, G.S., Nikolov, S.C., 2017. Landscape factors affecting territory occupancy and breeding success of Egyptian Vultures on the Balkan Peninsula. Journal of Ornithology 158: 443-457.

Hartmann, S.A., Oppel, S., Segelbacher, G., Juiña, M.E., Schaefer, H.M., 2017. Decline in territory size and fecundity as a response to carrying capacity in an endangered songbird. Oecologia 183: 597–606.


Oppel, S., Dobrev, V., Arkumarev, V., Saravia, V., Bounas, A., Kret, E., Skartsi, T., Velevski, M., Stoychev, S., Nikolov, S.C., 2016. Should we trust beliefs or data when assessing conservation interventions? A reply to Stoynov 2016. Biological Conservation 204 B: 149–150.

Oppel, S., Bond, A.L., Brooke, M.d.L., Harrison, G., Vickery, J.A., Cuthbert, R.J., 2016. Temporary captive population and rapid population recovery of an endemic flightless rail after a rodent eradication operation using aerially distributed poison bait. Biological Conservation 204 B: 442–448.

Lavers, J.L., Oppel, S., Bond, A.L., 2016. Factors influencing the detection of beach plastic debris. Marine Environmental Research 119:245-251.


Kamp, J., Oppel, S., Heldbjerg, H., Nyegaard, T., Donald, P. F., 2016. Unstructured citizen science data fail to detect long-term population declines of common birds in Denmark. Diversity and Distributions 22: 1024–1035.


Oppel, S., Lavers, J.L., Harrison, G., Bond, A.L., 2016. Reducing the primary exposure risk of Henderson crakes (Porzana atra) during aerial broadcast eradication by selecting appropriate bait colour. Wildlife Research 43: 298-303.


Russell, J.C., Jones, H.P., Armstrong, D.P., Courchamp, F., Kappes, P.J., Seddon, P.J., Oppel, S., Rauzon, M.J., Cowan, P.E., Rocamora, G., Genovesi, P., Bonnaud, E., Keitt, B.S., Holmes, N.D., Tershy, B.R., 2016. Importance of lethal control of invasive predators for island conservation. Conservation Biology 30: 670-672.


Oppel, S., Dobrev, V., Arkumarev, V., Saravia, V., Bounas, A., Kret, E., Skartsi, T., Velevski, M., Stoychev, S., Nikolov, S.C., 2016. Assessing the effectiveness of intensive conservation actions: Does guarding and feeding increase productivity and survival of Egyptian Vultures in the Balkans? Biological Conservation 198: 157-164.


Jones, H.P., Holmes, N.D., Butchart, S.H.M., Tershy, B.R., Kappes, P.J., Corkery, I., Aguirre-Munoz, A., Armstrong, D.P., Bonnaud, E., Burbidge, A.A., Campbell, K., Courchamp, F., Cowan, P.E., Cuthbert, R.J., Ebbert, S., Genovesi, P., Howald, G.R., Keitt, B.S., Kress, S.W., Miskelly, C.M., Oppel, S., Poncet, S., Rauzon, M.J., Rocamora, G., Russell, J.C., Samaniego-Herrera, A., Seddon, P.J., Spatz, D.R., Towns, D.R., and Croll, D.A, 2016. Invasive mammal eradication on islands results in substantial conservation gains. Proceedings of the National Academy of Sciences 113: 4033–4038.


Lascelles, B. G., Taylor, P. R., Miller, M. G. R., Dias, M. P., Oppel, S., Torres, L., Hedd, A., Le Corre, M., Phillips, R. A., Shaffer, S. A., Weimerskirch, H. and Small, C., 2016. Applying global criteria to tracking data to define important areas for marine conservation. Diversity and Distributions 22: 422-431.

Radchuk, V., Oppel, S., Groeneveld, J., Grimm, V., Schtickzelle, N., 2016. Simple or complex: Relative impact of data availability and model purpose on the choice of model types for population viability analyses. Ecological Modelling 323: 87-95.

Dobrev, V., Boev, Z., Arkumarev, V., Dobrev, D., Kret, E., Saravia, V., Bounas, A., Vavylis, D., Stoychev, S., Nikolov, S.C., Oppel, S., 2016. Diet is not related to productivity but to territory occupancy in a declining population of Egyptian Vultures Neophron percnopterus. Bird Conservation International 26: 273 –285.

Oppel, S., Dobrev, V., Arkumarev, V., Saravia, V., Bounas, A., Kret, E., Velevski, M., Stoychev, S., Nikolov, S.C., 2015. High juvenile mortality during migration in a declining population of a long-distance migratory raptor. Ibis 157: 545-557.

Oppel, S., Beard, A., Fox, D., Mackley, E., Leat, E., Henry, L., Clingham, E., Fowler, N., Sim, J., Sommerfeld, J., Weber, N., Weber, S., Bolton, M., 2015. Foraging distribution of a tropical seabird supports Ashmole's hypothesis of population regulation. Behavioral Ecology and Sociobiology 69: 915-926.

Lovvorn, J.R., Rocha, A.R., Jewett, S.C., Dasher, D., Oppel, S., Powell, A.N., 2015. Limits to benthic feeding by eiders in a vital Arctic migration corridor due to localized prey and changing sea ice. Progress in Oceanography 136: 162-174.

Kamp, J., Oppel, S., Ananin, A.A., Durnev, Y.A., Gashev, S.N., Hoelzel, N., Mishchenko, A.L., Pessa, J., Smirenski, S.M., Strelnikov, E.G., Timonen, S., Wolanska, K., Chan, S., 2015. Following the Passenger Pigeon? Global population collapse in a superabundant migratory bird, and illegal trapping in China. Conservation Biology 29: 1684-1694.

Oppel, S., Gray, G., Daley, J., Mendes, S., Fenton, C., Galbraith, G., Daniel, S., Millett, J., 2015. Montserrat. British Birds 108: 80-96.

Parashuram, D., Oppel, S., Fenton, C., James, G., Daley, J., Gray, G., Collar, N.J., Dolman, P.M., 2015. The Forest Thrush Turdus lherminieri prefers mature mesic forest with dense canopy. Bird Conservation International 25: 503-513.

Velevski, M., Nikolov, S.C., Hallmann, B., Dobrev, V., Sidiropoulos, L., Saravia, V., Tsiakiris, R., Arkumarev, V., Galanaki, A., Kominos, T., Stara, K., Kret, E., Grubac, B., Lisicanec, E., Kastritis, T., Vavylis, D., Topi, M., Hoxha, B., Oppel, S., 2015. Population decline and range contraction of the Egyptian Vulture Neophron percnopterus on the Balkan Peninsula. Bird Conservation International 25: 440-450.

Demerdzhiev, D., Stoychev, S., Dobrev, D., Spasov, S., Oppel, S., 2015. Studying the demographic drivers of an increasing Imperial Eagle population to inform conservation management. Biodiversity and Conservation 24: 627-639.

Dawson, J., Oppel, S., Cuthbert, R., Holmes, N., Bird, J.P., Butchart, S., Spatz, D., Tershy, B., 2015. Prioritizing islands for the eradication of invasive vertebrates in the UK overseas territories Conservation Biology 29: 143-153.

Oppel, S., Hilton, G. M., Ratcliffe, N., Fenton, C., Daley, J., Gray, G., Vickery, J. A., Gibbons, D., 2014. Assessing population viability while accounting for demographic and environmental uncertainty. Ecology 95: 1809-1818.

Oppel, S., Iankov, P., Mumun, S., Gerdzhikov, G., Iliev, M., Isfendiyaroglu, S., Yeniyurt, C., Tabur, E., 2014. Identification of the best sites around the gulf of Iskenderun, Turkey, for monitoring the autumn migration of Egyptian Vultures and other diurnal raptors. Sandgrouse 36: 240-249.

Oppel, S., Burns, F., Vickery, J., George, K., Ellick, G., Leo, D., Hillman, J. C. 2014. Habitat-specific effectiveness of feral cat control for the conservation of an endemic ground-nesting bird species. Journal of Applied Ecology 52: 1246-1254.

Oppel, S., Marczakiewicz, P., Lachmann, L., Grzywaczewski, G., 2014. Improving Aquatic Warbler population assessments by accounting for imperfect detection. PLoS ONE 9(4): e94406.

Hervias, S., Oppel, S., Medina, F., Pipa, T., Diaz, A., Ramos, J., Ruiz de Ybanez, R., Nogales, M., 2014. Assessing the impacts of introduced cats (Felis catus) on island biodiversity by combining dietary and movement analysis. Journal of Zoology 292: 39-47.

Oppel, S., Hervias, S., Oliveira, N., Pipa, T., Silva, C., Geraldes, P., Goh, M., Immler, E., McKown, M., 2014. Estimating population size of a nocturnal burrow-nesting seabird using acoustic monitoring and habitat mapping. Nature Conservation 7: 1-13.

Oppel, S., Cassini, A., Fenton, C., Daley, J., Gray, G., 2014. Population status and trend of the Critically Endangered Montserrat Oriole. Bird Conservation International 24: 252-261.

Kubacka, J., Oppel, S., Dyrcz, A., Lachmann, L., Barros da Costa, J.P.D., Kail, U., Zdunek, W., 2014. Effect of habitat management on productivity of the endangered aquatic warbler Acrocephalus paludicola. Bird Conservation International 24: 45-58.

Oppel, S., Hilton, G., Allcorn, R., Fenton, C. , Matthews, A. J., Gibbons, D., 2013. The effects of rainfall on different components of seasonal fecundity in a tropical forest passerine. Ibis 155: 464-475.

Hervias, S., Henriques, A., Oliveira, N., Pipa, T., Cowen, H., Ramos, J., Nogales, M., Geraldes, P., Silva, C., Ruiz de Ybanez, R., Oppel, S., 2013. Studying the effects of multiple invasive mammals on Cory's shearwater nest survival. Biological Invasions 15: 143-155.

Angelov, I., Hashim, I., Oppel, S., 2013. Persistent electrocution mortality of Egyptian Vultures Neophron percnopterus over 28 years in East Africa. Bird Conservation International 23: 1-6.

Oppel, S., Hervias, S., Oliveira, N., Pipa, T., Cowen, H., Silva, C., Geraldes, P., 2012. Estimating feral cat density on Corvo Island, Azores, to assess the feasibility of feral cat eradication. Airo 22: 3-11.

Hervias, S., Silva, C., Pipa, T., Oliveira, N., Henriques, A., Geraldes, P., Mealha, S., Diaz, E., Bravo, I., Oppel, S., Medina, F.M., 2012. Invasive mammal species on Corvo Island: is their eradication technically feasible? Airo 22: 12-28.

Michalski, J., Oppel, S., 2012. Lanthanusa bilineata sp. nov. from New Guinea (Odonata: Libellulidae) International Journal of Odonatology 15: 75-80.

Oppel, S., Burns, F., Ellick, G., George, K., Beard, A., Henry, L., Clingham, E., Hillman, J.C., Hollins, J.D., Thorsen, M.J., 2012. Recent observations suggest Bulwer's Petrel Bulweria bulwerii might breed on St Helena. Marine Ornithology 40: 67-68.

Oppel, S., Meirinho, A., Ramirez, I., Gardner, B., O'Connell, A., Miller, P.I., Louzao, M., 2012. Comparison of five modelling techniques to predict the spatial distribution and abundance of seabirds. Biological Conservation 156: 94-104.

Allcorn, R.I., Hilton, G.M., Fenton, C., Atkinson, P.W., Bowden, C.G.R., Gray, G.A.L., Hulme, M., Madden, J., Mackley, E.K., Oppel, S., 2012. Demography and breeding ecology of the critically endangered Montserrat Oriole. Condor 114: 227-235.

Oppel, S., Raine, A.F., Borg, J.J., Raine, H., Bonnaud, E., Bourgeois, K., Breton, A.R., 2011. Is the Yelkouan shearwater Puffinus yelkouan threatened by low adult survival probabilities? Biological Conservation 144: 2255-2263.

Oppel, S., Powell, A.N., Butler, M.G., 2011. King Eider foraging effort during the pre-breeding period in Alaska. Condor 113: 52-60.

Oppel, S., Beaven, B., Bolton, M., Vickery, J.A., Bodey, T.W., 2011. Eradication of invasive mammals on islands inhabited by humans and domestic animals. Conservation Biology 25: 232-240.

Oppel, S., Pain, D.J., Lindsell, J., Lachmann, L., Diop, I., Tegetmeyer, C., Donald, P.F., Anderson, G., Bowden, C.G.R., Tanneberger, F., Flade, M., 2011. High variation reduces the value of feather stable isotope ratios in identifying new wintering areas for aquatic warblers in West Africa. Journal of Avian Biology 42: 342-354.

Flade, M., Diop, I., Haase, M., Le Nevé, A., Oppel, S., Tegetmeyer, C., Vogel, A., Salewski, V., 2011. Distribution, ecology and threat status of the aquatic warblers Acrocephalus paludicola in West Africa. Journal of Ornithology 152: S129-S140.

Buchanan, G.M., Lachmann, L., Tegetmeyer, C., Oppel, S., Nelson, A., Flade, M., 2011. Identifying the potential wintering sites of the globally threatened Aquatic Warbler Acrocephalus paludicola using remote sensing. Ostrich 82: 81-85.

Oppel, S., Federer, R., O'Brien, D.M., Powell, A.N., Hollmén, T., 2010. Effects of lipid extraction on stable isotope ratios in avian egg yolk: is arithmetic correction a reliable alternative? Auk 157: 72-78.

Oppel, S., Mack, A.L., 2010. Bird assemblage and visitation pattern at fruiting Elmerrillia tsiampaca (Magnoliaceae) trees in Papua New Guinea. Biotropica 42: 229-235.

Oppel, S., Powell, A.N., 2010. Age-specific survival estimates for King Eiders derived from satellite telemetry. Condor 112: 323-330.

Michalski, J., Oppel, S., 2010. Two new species of Argiolestes Selys (Odonata: Megapodagrionidae) from Papua New Guinea. International Journal of Odonatology 13: 63-74.

Oppel, S., Powell, A., 2010. Carbon isotope turnover in blood as a measure of arrival time in migratory birds using isotopically distinct environments. Journal of Ornithology 151: 123-131.

Oppel, S., Powell, A.N., O'Brien, D.M., 2010. King eiders use an income strategy for egg production - a case study for incorporating individual dietary variation in nutrient allocation research. Oecologia 164: 1-12.

Oppel, S., Huettmann, F., 2010. Using a Random Forest model and public data to predict the distribution of prey for marine wildlife management. In: Spatial information management in animal science. Eds. Cushman, S., Huettmann, F., pp. 151-163. Springer, Tokyo, Japan.

Oppel, S., Strobl, C., Huettmann, F., 2009. Alternative methods to quantify variable importance in ecology. Technical Report Number 65. Department of Statistics, Ludwig-Maximilians Universität, München, Germany.

Oppel, S., Powell, A.N., Dickson, D.L., 2009. Using an algorithmic model to reveal individually variable movement decisions in a wintering sea duck. Journal of Animal Ecology 78: 524-531.

Oppel, S., Powell, A.N., O' Brien, D.M., 2009. Using eggshell membranes as a non-invasive tool to investigate the source of nutrients in avian eggs. Journal of Ornithology 150: 109-115.

Oppel, S., Dickson, D.L., Powell, A.N., 2009. International importance of the eastern Chukchi Sea as a staging area for migrating King Eiders. Polar Biology 32: 775-783.

Oppel, S., Powell, A.N., 2009. Does winter region affect spring arrival time and body mass of king eiders in northern Alaska? Polar Biology 32: 1203-1209.

Oppel, S., Powell, A.N., Dickson, D.L., 2008. Timing and distance of King Eider migration and winter movements. Condor 110: 296-305.

Oppel, S., 2008. King Eider migration and seasonal interactions at the individual level. PhD Thesis (225 pp). Department of Biology and Wildlife, University of Alaska Fairbanks, Fairbanks, Alaska.

Oppel, S., Powell, A.N., 2008. Assigning king eiders to wintering regions in the Bering Sea using stable isotopes of feathers and claws. Marine Ecology Progress Series 373: 149-156.

Michalski, J., Oppel, S., 2007. Papuagrion carcharodon sp. nov. from southern New Guinea (Odonata, Coenagrionidae). International Journal of Odonatology 10: 81-86.

Mack, A.L., Oppel, S., 2006. Nidification of the Dwarf Whistler, Pachycare flavogrisea, a little-known New Guinea endemic. Bulletin of the British Ornithologists' Club 126: 61-64.

Oppel, S., 2006. Comparison of two Odonata communities from a natural and a modified rainforest in Papua New Guinea. International Journal of Odonatology 9: 89-102.

Oppel, S., 2006. Using distance sampling to quantify Odonata density in tropical rainforests. International Journal of Odonatology 9: 81-88.

Beaven, B., Oppel, S., 2006. Re-introduction of endangered forest birds to restored islands: lessons from Ulva Island, New Zealand. Journal of Ornithology 147: 135-136.

Phillips, L.M., Oppel, S., Powell, A.N., 2006. Movements of the King Eider during the non-breeding period revealed by satellite telemetry. Journal of Ornithology 147: 118-119.

Oppel, S., 2006. Site fidelity and dispersal of adult Neurobasis awamena Michalski in tropical rainforest streams in Papua New Guinea (Zygoptera: Calopterygidae). Odonatologica 35: 331-339. [download pdf]

Oppel, S., 2005. Increasing awareness of dragonflies in Papua New Guinea. Agrion 9: 15-16.

Oppel, S., 2005. Long-term changes in the breeding community of coastal bird species on a small island - does natural succession compromise conservation values? Biodiversity and Conservation 14: 3407-3422.

Oppel, S., 2005. Die Heuschreckenfauna der jungen Düneninsel Trischen im schleswig-holsteinischen Wattenmeer. Drosera 1/2005: 1-5.

Oppel, S., 2005. Odonata in the Crater Mountain Wildlife Management Area, Papua New Guinea. IDF-Report 7: 1-28.

Oppel, S., 2005. Habitat associations of an Odonata community in a lower montane rainforest in Papua New Guinea. International Journal of Odonatology 8: 243-257.

Oppel, S., Schaefer, H.M., Schmidt, V., Schröder, B., 2004. Habitat selection by the pale-headed brush-finch (Atlapetes pallidiceps) in Southern Ecuador: implications for conservation. Biological Conservation 118: 33-40.

Oppel, S., Schaefer, H.M., Schmidt, V., Schröder, B., 2004. Cowbird parasitism of Pale-headed Brush-finch Atlapetes pallidiceps: implications for conservation and management. Bird Conservation International 14: 63-75.

Oppel, S., Schaefer, H.M., Schmidt, V., Schröder, B., 2004. How much suitable habitat is left for the last known population of the Pale-headed Brush-Finch? Condor 106: 429-434.

Oppel, S., Stock, M., 2004. Reconsidering species extinctions in National Parks: a reply to Berger. Conservation Biology 18: 845-846.

Oppel, S., Beaven, B.M., 2004. Habitat use and foraging behaviour of Mohua (Mohoua ochrocephala) in the podocarp forest of Ulva Island, New Zealand. Emu 104: 235-240.

Oppel, S., Beaven, B.M., 2004. Juvenile Stewart Island robins (Petroica australis rakiura) disperse up to 16 km. Notornis 51: 55-56.

Oppel, S., Beaven, B.M., 2004. Survival and dispersal of mohua (Mohoua ochrocephala, Pachycephalidae) after transfer to Ulva Island, New Zealand. Notornis 51: 116.

Oppel, S., 2004. Natural dynamics shaping the bird community on an island. Wadden Sea Newsletter 1/04: 11-12.

Oppel, S., 2003. The role of breeding biology, habitat selection, and cowbird parasitism for the conservation of the Pale-headed Brush-Finch Atlapetes pallidiceps in southern Ecuador. MSc Thesis (220 pp). Carl-von-Ossietzky Universität, Oldenburg.

Oppel, S., 2003. Hat Trischen als Vogelinsel ausgedient? Wattenmeer International 12/3: 17-18.

Oppel, S., Schaefer, H.M., Schmidt, V., 2003. Description of the nest, eggs and breeding behavior of the endangered Pale-headed Brush-Finch in Ecuador. Wilson Bulletin 115: 360-366.

Oppel, S., Beaven, B.M., 2002. Stewart Island robins (Petroica australis) fly home after transfer to Ulva Island. Notornis 49: 180-181.

Oppel, S., 2001. Die Vögel des Vehnemoores (Landkreis Cloppenburg). Jahresbericht der Ornithologischen Arbeitsgemeinschaft Oldenburg 16: 59-77.

Oppel, S., Steinborn, B., 2001. Brut- und Rastvögel der Klärschlammdeponie Edewecht (Landkreis Cloppenburg) 1998-2000. Jahresbericht der Ornithologischen Arbeitsgemeinschaft Oldenburg 16: 30-58.

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