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 *Mentored Student Co-author

2023

[20] Lübcker N, et al. (In Press.) Use of amino acid stable isotopes to investigate capital versus income breeding strategies by three species of Arctic-breeding migratory geese. Methods in Ecology and Evolution.

[19] Lübcker N, et al. Herpetological Review (Natural History Notes), Micruroides euryxanthus (Sonoran Coral Snake). Diet. In Press.

[18] Moreau, et al. Wind-driven upwelling of iron sustain dense phytoplankton blooms and productive food webs in the eastern Weddell Gyre, Nature Communications 9:14:1303. doi 10.1038/s41467-023-36992-1.

[17] Navarrete Parra, Lübcker N, et al. Multiple isotope analyses (Δ’¹⁷O) revealed variation in the use of marine resources, metabolic, and sea water in two species of coastal songbirds of the genus Cinclodes (Passeriformes, Furnariidae) Frontiers in Ecology and Evolution 11:1120271. doi: 10.3389/fevo.2023.1120271.

2021

[16] Lübcker N, Newsome SD, Bester MN, de Bruyn PJN. 2021. Validating the use of bulk tissue stable isotope and amino acid δ¹⁵N values measured in molted hair and epidermis of elephant seals to assess temporal foraging niche specialization. Marine Ecology Progress Series 673:229-243.

[15] *Padayachee K, Malan G, Lübcker N, Hall G, Woodborne S. 2021. Differences in the dietary habits of Verreaux’s Eagles Aquila verreauxii between peri-urban and rural populations. Bird Conservation International 31(1), pp.96-110.

[14] *van Tonder A, Lübcker N, Guerreiro M, Xavier JC, Cherel Y, de Bruyn PJN. 2021. Ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, revealed through stable isotope analysis of squid beaks. Marine Ecology Progress Series 658:105-115. https://doi.org/10.3354/meps13556.

[13] Bester M, Lübcker N, Haddad W, Bornemann H, Wege, M. 2021. Antarctic pack ice seal observations during spring across the Lazarev Sea. Polar Record, 57, E12.

2020

[12] Lübcker N, Whiteman JP, Newsome SD, Millar RP, de Bruyn PJN. 2020. Can the carbon and nitrogen isotope values of offspring be used as a proxy for their mother’s diet? Using foetal physiology to interpret bulk tissue and amino acid δ¹⁵N values. Conservation Physiology 8, coaa060.

[11] Lübcker N, Whiteman JP, Millar RP, de Bruyn PJN, Newsome SD. 2020. Fasting affects amino acid nitrogen isotope values: a new tool for identifying nitrogen balance of free-ranging mammals. Oecologia 193:53-65.

[10] Lübcker N, Bloem LM, du Toit T, Swart P, de Bruyn PJN, Swart A, Millar RP. 2020. What’s in a whisker? High-throughput analysis of twenty-eight C₁₉ and C₂₁ steroids in mammalian whiskers by ultra-performance convergence chromatography-tandem mass spectrometry. Journal of Chromatography B 1141:122028.

2019

[9] Bester MN, Wege M, Lübcker N, Postma M, Syndercombe G. 2019. Opportunistic ship-based census of pack ice seals in eastern Weddell Sea, Antarctica. Polar Biology 42:225-229.

2017-2018

[8] Wege M, Bornemann H, Lübcker N, Postma M, Bester MN. 2018. Habitat use and diet of the Ross seal in the eastern Weddell Sea, 5th South African Marine Mammal Colloquium, Port Elizabeth, South Africa, 20 August 2018 – 23 August 2018.

[7] Lübcker N, Reisinger RR, Oosthuizen WC, de Bruyn PJN, van Tonder A, Bester MN. 2017. Low trophic level diet of juvenile southern elephant seals Mirounga leonina from Marion Island: a stable isotope investigation using vibrissal regrowths. Marine Ecology Progress Series 577:237-250.

2016

[6] Lübcker N, Dabrowski J, Zengeya TA, Oberholster PJ, Hall G, Woodborne S, Robertson MP. 2016. Trophic ecology and persistence of invasive silver carp Hypophthalmichthys molitrix in an oligotrophic South African impoundment. African Journal of Aquatic Science 41:399-411.

[5] Lübcker N, Condit R, Beltran RS, de Bruyn PJN, Bester MN. 2016.Vibrissal growth parameters of southern elephant seals Mirounga leonina: obtaining fine-scale, time-based stable isotope data. Marine Ecology Progress Series 559:243-255.

[4] Reisinger R, Gröcke DR, Lübcker N, McClymont EL, Hoelzel AR, de Bruyn PJN. 2016. Variation in the diet of killer whales Orcinus orca at Marion Island, Southern Ocean. Marine Ecology Progress Series 549:263-274.

2012-2014

[3] Lübcker N, Zengeya TA, Dabrowski J, Robertson MP. 2014. Predicting the potential distribution of invasive silver carp, Hypophthalmichthys molitrix in southern Africa. African Journal of Aquatic Science 39:157-165.

[2] Dabrowski J, Hall G, Lübcker N, Oberholster PJ, Phillips DL, Woodborne S. 2014. Piscivory does not cause pansteatitis (yellow fat disease) in Oreochromis mossambicus from an African subtropical reservoir. Freshwater Biology 59:1484-1496.

[1] Woodborne S, Huchzermeyer KDA, Govender D, Pienaar DJ, Hall G, Myburgh JG, Deacon AR, Venter J, Lübcker N. 2012. Ecosystem change and the Olifants River crocodile mass mortality events. Ecosphere 3:1-17.

SUBMITTED MANUSCRIPTS IN REVIEW/IN PRESS

de Lima RC, Lübcker N, Botta S, Negrete J, Secchi ER, Newsome SD (In Prep.) Foraging niche divergence in a climate change sentinel from the Antarctic Peninsula: evidence from bulk and compound-specific stable isotope analysis. Global Change Biology.

Busquets-Vass G, Carroll EL, Lübcker N, Constantine R, Childerhouse S, Baker S, Dunshea G, Hindell M, Cranswick A, Lundquist D, Newsome SD. (In Prep.) Assessing nutrient allocation strategies in a capital breeding baleen whale: a novel tool to infer reproductive shifts in nitrogen balance. Functional Ecology.

Lübcker N, McIntyre TM, Newsome SD, de Bruyn N (In Prep.) Foraging site fidelity, individual diet specialization, and interannual trophic niche conservatism across an environmental isotope gradient. Journal of Animal Ecology.

Lübcker N, Whiteman JP, Sharp Z, Newsome SD. Drivers of triple oxygen isotope variation in animal body water. In Prep. Journal of Animal Ecology.

NON-PEER REVIEWED JOURNAL ARTICLES/OTHER CONTRIBUTIONS

PJN de Bruyn, Oosthuizen WC, Wege M, Lübcker N, Bester MN. 2015/16. Marion Island Marine Mammal Programme (Pinnipeds): Annual work plan M72, Mammal Research Institute, University of Pretoria. pp. 1 – 45.

Cerfonteyn M, Lübcker N, Postma M, Bester M (2016) Wilson’s storm petrels mating and resting on Antarctic ice-breaker. Biodiversity Observations ISSN 2219-0341.