Publications


2023

Stenkewitz U, Nielsen ÓK. Climate change and ptarmigan population dynamics. In prep.

Stenkewitz U. 2023. Ptarmigan Counts on Snæfellsnes, West Iceland, 2023. pdf 

2022

Stenkewitz U. 2022. Ptarmigan Counts on Snæfellsnes, West Iceland, 2022. pdf

2021

Stenkewitz U. 2021. Ptarmigan Counts on Snæfellsnes, West Iceland, 2021. pdf

Stenkewitz U, Thielemann L. 2021. Auerhuhn in der Niederlausitz: 7. Rundbrief (de + en) und Statusreport (de + en). Available at: https://naturpark-nlh.de/auerhuhn-im-naturpark/projekt-auerhuhn and upon request.

Morrill AM, Nielsen ÓK, Stenkewitz U, Pálsdóttir GR, Forbes MR, Skírnisson K. 2021. Weighing the predictors: host traits and co-infecting species both explain variation in parasitism of Rock Ptarmigan. Ecosphere 12: e03709.

2020

Stenkewitz U. 2020. Ptarmigan Counts on Snæfellsnes, West Iceland, 2020. pdf

Nielsen ÓK, Morrill A, Skírnisson K, Stenkewitz U, Pálsdóttir GR, Forbes MR. 2020. Host sex and age typically explain variation in parasitism of Rock Ptarmigan: implications for identifying determinants of exposure and susceptibility. Journal of Avian Biology 51: https://doi.org/10.1111/jav.02472.

Kamler JF, Page-Nicholson S, Stenkewitz U, Gharajehdaghipour T, Davies-Mostert H. 2020. Do black-backed jackals exhibit spatial partitioning with African wild dogs and lions? African Journal of Ecology 58: 552-556.    pdf

2019

Kamler JF, Stenkewitz U, Gharajehdaghipour T, Macdonald DW. 2019. Social organization, home ranges, and extraterritorial forays of black-backed jackals. Journal of Wildlife Management 83: 1800-1808.    pdf

Stenkewitz U. 2019. Ptarmigan Counts on Snæfellsnes, West Iceland, 2019. pdf 

Stenkewitz U, Nielsen ÓK. 2019. The summer diet of the Snowy Owl Bubo scandiacus in Iceland. Journal of Raptor Research 53: 98-101.    pdf

2017

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2017. Feather holes of rock ptarmigan are associated with amblyceran chewing lice. Wildlife Biology: wlb.00255.   pdf

2016

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2016. Host-parasite interactions and population dynamics of rock ptarmigan. PlosOne: 10.1371/journal.pone.0165293

Stenkewitz U, Herrmann E. 2016. Comparison of distance sampling estimates to a known population size of Anteating Chats Myrmecocichla formicivora. Ostrich 87: 185-188.   pdf  

2015

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2015. The relationship between parasites and spleen and bursa mass in Rock Ptarmigan Lagopus muta. Journal of Ornithology 156: 429-440.   pdf

Kamler JF, Stenkewitz U, Wilson B, Herrick J, Lamberski N, Sliwa A, Macdonald DW. 2015. Ecological relationship of black-footed cats (Felis nigripes) and sympatric canids in South Africa. Mammalian Biology 80: 122-127.   pdf

Convey P, Abbandonato H, Bergan F, Beumer L, Biersma E, Bråthen V, D'Imperio L, Jensen C, Nilsen S, Paquin K, Stenkewitz U, Svoen M, Winkler J, Müller E, Coulson S. 2015. Survival of rapidly fluctuating natural low winter temperatures by High Arctic soil invertebrates. Journal of Thermal Biology 54: 111-117.   pdf 

2013

Kamler JF, Stenkewitz U, Macdonald DW. 2013. Lethal and sublethal effects of black-backed jackals on cape foxes and bat-eared foxes. Journal of Mammalogy 94: 295-306.   pdf

2012

Kamler JF, Stenkewitz U, Klare U, Jacobsen NF, Macdonald DW. 2012. Resource partitioning among cape foxes, bat-eared foxes and black-backed jackals in South Africa. Journal of Wildlife Management 76: 1241-1253.   pdf

2011

Choki T, Tshering J, Norbu T, Stenkewitz U, Kamler JF. 2011. Predation by leopards on black-necked cranes Grus nigricollis in Bhutan. Forktail 27: 117-119.   pdf

Thinley P, Kamler JF, Wang SW, Lham K, Stenkewitz U, Macdonald DW. 2011. Seasonal diet of dholes (Cuon alpinus) in northwestern Bhutan. Mammalian Biology 76: 518-520.   pdf

2010

Stenkewitz U, Wilson B, Kamler JF. 2010a. Seasonal comparisons of barn owl diets in an agricultural and natural area in central South Africa. Ostrich 81: 163-166.  pdf

Stenkewitz U, Herrmann E, Kamler JF. 2010b. Distance sampling for estimating springhare, cape hare and steenbok densities in South Africa. South African Journal of Wildlife Research 40: 87-92.  pdf

Klare U, Kamler JF, Stenkewitz U, Macdonald DW. 2010. Diet, prey selection and predation impact of black-backed jackals in South Africa. Journal of Wildlife Management 74: 1030-1042.  pdf

2008

Stenkewitz U. 2008. Biodiversity Report 2008, District Marzahn-Hellersdorf in Berlin, Germany. Department of Nature and Environment Marzahn-Hellersdorf, Lower Administration of Nature Conservation, Berlin, Germany.   pdf

Stenkewitz U, Kamler JF. 2008. Birds feeding in association with bat-eared foxes on Benfontein Game Farm, South Africa. Ostrich 79: 235-237.   pdf

2006

Stenkewitz U. 2006. Comparison of Line Transect Techniques Used for Censusing the Rock Ptarmigan (Lagopus muta Montin, 1776) in Iceland. Diploma thesis. University of Applied Sciences Eberswalde, Germany.   pdf

Jedrzejewski W, Spaedtke H, Kamler JF, Jedrzejewska B, Stenkewitz U. 2006. Group size dynamics of red deer in Bialowieza Primeval Forest, Poland. Journal of Wildlife Management 70: 1054-1059.   pdf  


Presentations

Stenkewitz U. 2020. The Snowy Owl in Iceland: Past and Present. International Snowy Owl Working Group meeting, Norway.

Stenkewitz U. 2017. Parasites and population dynamics of Icelandic rock ptarmigan. Friday seminar, Hólar University College, Iceland / Biology talks, University of Iceland.

Stenkewitz U. 2016. Population dynamics and parasite infestations. Ptarmigan meeting, Icelandic Institute of Natural History, Iceland. 

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2015. Details on the parasite community of Icelandic rock ptarmigan and their potential impact on population dynamics. International Grouse Symposium, Reykjavík, Iceland. 

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2014. Parasite infection, body condition, and population changes of rock ptarmigan in Iceland. Hrafnaþing, Icelandic Institute of Natural History. 

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2014. Parasites in Icelandic rock ptarmigan and their potential impact on population dynamics. Floki & Folda lunch seminar, University of Iceland.  

Stenkewitz U, Nielsen ÓK, Skírnisson K. 2013. Patterns in the parasite community structure of Icelandic rock ptarmigan 2006 - 2012? Conference on biological research in Iceland, Reykjavik, Iceland.  

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2013. Parasite infections, body condition, and population change of rock ptarmigan in Iceland. Meeting regarding bi-national collaboration, Hedmark University College, Norway / Grouse management meeting, Jokkmokk, Sweden

Stenkewitz U, Nielsen ÓK, Skírnisson K. 2012 / 2011. On parasite infections and body condition of rock ptarmigan in Iceland. Research Symposium of the School of Engineering and Natural Sciences, University of Iceland pdf/ 12th International Grouse Symposium, Matsumoto, Japan pdf/ Conference on biological research in Iceland, Reykjavik, Iceland.  

Stenkewitz U, Nielsen ÓK, Skírnisson K. 2011. Spleen mass of Icelandic rock ptarmigan in relation to sex, age, body condition and helminth infections. The XVth Nordic Congress of Wildlife Research: Transboundary Wildlife Management, Iceland.  pdf


Posters

Stenkewitz U, Nielsen ÓK. 2020. Changing climate and Icelandic ptarmigan. Nordic Oikos conference, Iceland.

Stenkewitz U, Jónsson JE. 2019. Ptarmigan counts on Snæfellsnes peninsula. Conference on Biology in Iceland, Iceland. 

Stenkewitz U, Nielsen ÓK. 2019. Changing climate and Icelandic rock ptarmigan: the influence of regional weather. Conference on Biology, Iceland.

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2018. Host-parasite interactions and population dynamics of rock ptarmigan in Iceland. International Grouse Symposium, Utah, USA.

Stenkewitz U, Nielsen ÓK. 2017. The summer diet of the Snowy Owl Bubo scandiacus in Iceland. World Owl Conference, Portugal.   

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2017. Host-parasite interactions and population dynamics of rock ptarmigan in Iceland. BOU Annual Conference, UK. 

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2016. Host-parasite interactions in rock ptarmigan and their potential impact on population dynamics. Nordic Oikos conference, Finland. 

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2015. Are feather holes of rock ptarmigan associated with amblyceran chewing lice? International Grouse Symposium, Reykjavík, Iceland / 4th Ecological Conference, Icelandic Ecological Society, Iceland.  

Stenkewitz U, Nielsen ÓK, Skírnisson K. 2014. Spleen and bursa mass of rock ptarmigan Lagopus muta in relation to parasite infections, age, sex, year, and ptarmigan density. Conference on biological research in Iceland, Reykjavik, Iceland.  

Stenkewitz U, Nielsen ÓK. 2013. Um sníkjudýr rjúpurnar (On the parasites of rock ptarmigan). Arctic Day (Norðurslóðadagurinn), Arctic Cooperation Network Iceland (Norðurslóðanet Íslands), Iceland / Researchers' Night (Vísindavaka), The Icelandic Centre for Research (Rannis), Iceland. 

Stenkewitz U, Nielsen ÓK, Skírnisson K, Stefánsson G. 2013. Spleen and bursa mass of rock ptarmigan in relation to parasite infections, age, sex and year. 43rd Annual Meeting of the Ecological Society of Germany, Austria and Switzerland, Potsdam, Germany.  

Stenkewitz U, Nielsen ÓK, Skírnisson K. 2012. On parasite infections and body condition of rock ptarmigan in Iceland. Research Symposium of the School of Engineering and Natural Sciences, University of Iceland.  

Stenkewitz U, Nielsen ÓK, Skírnisson K. 2012 / 2011 / 2010. Parasite diversity of the rock ptarmigan in Iceland. 12th International Grouse Symposium, Japan pdf/ Gyrfalcons and Ptarmigans in a Changing World conference, USA pdf/ Fifteenth conference on research in the biomedical and health sciences at the University of Iceland, Reykjavik, Iceland / Læknablaðið, The Icelandic Medical Journal Supplement 66: 92 (In Icelandic) pdf/ 4th Conference of the Scandinavian-Baltic Society for Parasitology: "Parasites and infectious diseases in a changing world", Oslo, Norway / Conference on biological research in Iceland, Reykjavik, Iceland pdf/ The Icelandic Ecological Society and Biological Societies research symposium on Biodiversity, Reykjavik, Iceland   

Stenkewitz U, Nielsen ÓK, Skírnisson K. 2010. The helminth fauna of the rock ptarmigan in Iceland: Species composition and inter-annual changes in prevalence and intensity of infection. School of Engineering and Natural Sciences Research Symposium, Reykjavik, Iceland. 

Herrmann E, Stenkewitz U. 2007. How accurate is distance sampling? A comparison with the true numbers of an avian species. Southern African Wildlife Management Association Conference, South Africa.  pdf