Rikke Guldborg Hansen

Rosing-Asvid A, Löytynoja A, Momigliano P, Hansen RG, Scharff-Olsen CH, Valtonen M, Kammonen J, Dietz R, Rigét FF, Ferguson SH, Lydersen C, Kovacs KM, Holland DM, Jernvall J, Auvinen P, Olsen MT (2023) An evolutionarily distinct ringed seal in the Ilulissat Icefjord. Mol Ecol 32:5932-5943

Tervo OM, Louis M, Sinding M-HS, Heide-Jørgensen MP, Hansen RG (2023) Possible signs of recovery of the nearly extirpated Spitsbergen bowhead whales: calves observed in east Greenland. Polar Res 42

Alstrup AKO, Knudsen PJT, Thøstesen CB, Ransborg C, Sigsgaard J, Hansen RG, Lauridsen H (2022) Riffelprojektil fundet i strandet vågehval. Flora og Fauna 127:66-70

Garde E, Hansen RG (2021) Chapter 4 – Stocks, distribution and abundance. in The Atlantic Walrus. Editors: Keighley X, Olsen MT, Jordan P, Desjardins S. Academic Press: 77-95.

Heide-Jørgensen MP, Blackwell SB, Tervo OM, Samson AL, Garde E, Hansen RG, Ngô MC, Conrad AS, Trinhammer P, Schmidt HC, Sinding M-HS, Williams TM, Ditlevsen S (2021). Behavioral Response Study on Seismic Airgun and Vessel Exposures in Narwhals. Front. Mar. Sci. 8:658173.

Tervo OM, Blackwell SB, Ditlevsen S, Conrad A, Samson AL, Garde E, Hansen RG, Heide-Jørgensen MP (2021) Narwhals react to ship noise and airgun pulses embedded in background noise. Biology Letters 17: 20210220.

Chambault P, Tervo OM, Garde E, Hansen RG, Blackwell SB, Williams TM, Dietz R, Albertsen CM, Laidre K, Richard P, Sinding M-HS, Schmidt HC, Heide-Jørgensen MP (2020) The impact of rising sea temperatures on an Arctic top predator, the narwhal. Nature Scientific Reports 10:18678

Heide-Jørgensen MP, Blackwell SB, Williams TM, Sinding M-HS, Skovrind M, Tervo OM, Garde E, Hansen RG, Nielsen NH, Ngô MC, Ditlevsen S (2020) Some like it cold: Temperature dependent habitat selection by narwhals. Ecology and Evolution 10:8073-8090.

Heide-Jørgensen MP, Garde E, Hansen RG, Tervo OM, Sinding M-HS, Witting L, Marcoux M, Watt C, Kovacs KM, Reeves RR (2020) Narwhals require targeted conservation. Science 23 October 2020, 370: 416.

Heide-Jørgensen MP, Hansen RG, Shpak OV (2020) Distribution, migrations, and ecology of the Atlantic and the Okhotsk Sea populations. In The Bowhead Whale: Balaena Mysticetus: Biology and Human Interactions, eds. J.C. George J.G.M. Thewissen, 57-76

Bröker, K.C.A., R.G.Hansen, K.E.Leonard, Koski, W.R. and M.P. Heide-Jørgensen. 2019. A comparison of image based and aerial surveys of narwhals. Marine Mammal Science, 1-27.

Hansen RG, Boye TK, Larsen RS, Nielsen NH, Tervo OM, Nielsen RD, Rasmussen MH, Sinding M-HS, Heide-Jørgensen MP (2018) Abundance of whales in West and East Greenland in summer 2015. NAMMCO Scientific Publication 11.

Hobbs RC, Randall RR, and Prewitt JS. 2019. Global Review of the Conservation Status of Monodontid Stocks. Marine Fisheries Review: mfr813-41.

Watt, C.A., Doniol-Valcroze T., Witting L., Hobbs, R., Hansen, R.G., Lee, D.S., Marcoux, M., Lesage, V., Garde, E., Ferguson, S.H. M.P. Heide-Jørgensen. 2019. Hunt allocation modeling for migrating marine mammals. Marine Fisheries Review

Blackwell SB, Tervo OM, Conrad AS, Sinding MHS, Hansen RG, Heide-Jørgensen MP (2018) Spatial and temporal patterns of sound production in east Greenland narwhals. PLoS ONE 13(6): e0198295

Chambault P, Albertsen CM, Patterson TA, Hansen RG, Tervo O, Laidre K and Heide-Jørgensen MP (2018) Sea surface temperature predicts the movements of an Arctic cetacean: the bowhead whale. Nature Scientific Reports 8:9658

Garde E, Jung-Madsen S, Ditlevsen S, Hansen RG, Zinglersen KB, Heide-Jørgensen MP (2018) Diving behavior of the Atlantic walrus in high Arctic Greenland and Canada. J Exp Mar Bio Ecol 500: 89-99.

Nielsen NH, Teilmann J, Sveegaard S, Hansen RG, Sinding M-HS, Dietz R, Heide-Jørgensen MP (2018) Oceanic movements, site fidelity and deep diving in harbour porpoises from Greenland show limited similarities to animals from the North Sea. 35 Marine Ecology Progress Series 597: 259–272 doi:10.3354/meps12588

Heide-Jørgensen MP, Flora J, Andersen AO, Stewart REA, Nielsen NH, Hansen RG (2017) Walrus Movements in Smith Sound: A Canada - Greenland Shared Stock. Arctic 70: 308

Heide-Jørgensen MP, Hansen RG, Fossette S, Nielsen NH, Borchers DL, Stern H, Witting L (2016) Rebuilding beluga stocks in West Greenland. Animal Conservation 1-12

Heide-Jørgensen MP, Sinding MHS, Nielsen NH, Rosing-Asvid A, Hansen RG (2016) Large numbers of marine mammals winter in the North Water polynya. Polar biology, 39 (9): 1605-1614

Rekdal SL, Guldborg Hansen R, Borchers D, Bachmann L, Laidre KL, Wiig Ø, Hjort Nielsen N, Fossette S, Tervo O, and Heide-Jørgensen MP (2015) Trends in bowhead whales in West Greenland: aerial surveys versus genetic capture-recapture analyses. Marine Mammal Science 1: 133-154,

Heide-Jørgensen MP, Nielsen NH, Hansen RG and Blackwell SS (2014) Stomach temperature in narwhals (Monodon monoceros) during feeding events. Animal Biotelemetry 2:9.

Hansen RG, Heide-Jørgensen MP (2013) Spatial trends in abundance of long-finned pilot whales, white-beaked dolphins and harbour porpoises in West Greenland. Marine Biology 160:2929-2941

Heide-Jørgensen MP, Hansen RG, Westdal K, Reeves RR and Mosbech A (2013) Narwhals and seismic exploration: Is seismic noise increasing the risk of ice entrapment? Biological Conservation

Heide-Jørgensen MP, KL Laidre, NH Nielsen, RG Hansen, A Røstad. (2013) Winter and spring diving behavior of bowhead whales relative to prey. Animal Biotelemetry 1: 1-15.

Heide-Jørgensen MP, Laidre KL, Fossette S, Rasmussen M, Nielsen NH, Hansen RG (2013) Abundance of walruses in Eastern Baffin Bay and Davis Strait. Walrus of the North Atlantic. Eds. Stewart REA, Kovacs K, Aquarone M. NAMMCO Scientific Publication Series, Volume 9: In Press. ISSN: 2309-2491

Hansen RG, Heide-Jørgensen MP, Laidre KL (2012) Recent abundance estimates of bowhead whales in Isabella Bay, Canada. Journal of Cetacean Research Management 12(3): 317-319

Heide-Jørgensen MP, Burt LM, Hansen RG, Nielsen NH, Rasmussen M, Fossette S, Stern H (2012) The Significance of the North Water Polynya to Arctic Top Predators. Ambio

Heide-Jørgensen MP, Laidre KL, Hansen RG, Burt ML, Simon M, Borchers DL, Hansen J, Harding K, Rasmussen M, Diets R, Teilmann B (2012). Rate of increase and current abundance of humpback whales in West Greenland. J. Cetacan Res. Manage. 12(1): 1–14, 2012.

Heide-Jørgensen MP, Laidre KL, Burt ML, Borchers DL, Marques TA, Hansen RG, Rasmussen M, Fossette S, Abundance of narwhals (Monodon monoceros) on the hunting grounds in Greenland, Journal of Mammalogy, Volume 91, Issue 5, 15 October 2010, Pages 1135–1151

Heide-Jørgensen MP, Witting L, Laidre KL and Hansen RG (2010) Fully corrected estimates of minke whale abundance in West Greenland in 2007 Journal of Cetacean Research and Management. 11(2): 75–82

Nr. 123: Hvidbogen om narhvalen i Grønland DEL 1

Nr. 123: Hvidbogen om narhvalen i Grønland DEL 2

Nr. 123: Hvidbogen om narhvalen i Grønland DEL 3

A principle-based approach to setting management objectives for removals of small cetaceans and pinnipeds. Oral presentation. NAMMCO SC29/2023. Copenhagen (25/1)

Aerial survey of narwhals in East Greenland, august 2022. Oral presentation. NAMMCO SC29/2023. Copenhagen (24/1)​

Tervo O, Garde E, Hansen RG, Heide-Jørgensen MP (2021) Update on catch statistics for narwhals in East Greenland 2019-2021. SC/28/NEGWG/09.

Garde E, Hansen RG, Heide-Jørgensen MP (2020) Narwhal hunting in Melville Bay, West Greenland, 2005 to 2019. JWG/2020/10.

Garde E, Hansen RG, Tervo O, Heide-Jørgensen MP (2019) Catch statistics for narwhals in East Greenland 1955–2019. NAMMCO SC/26/NEGWG/07.

Hansen R, Borchers D and Heide-Jørgensen MP (2019) Project 7.2 and 7.3. Summer surveys of marine mammals in the Greenland Sea and the North-east Water and winter survey of marine mammals in the Northeast Water

Hansen RG and Heide-Jørgensen MP (2019) Abundance of narwhals at the hunting areas in East Greenland in 2008 and 2016, SC/26/NEGWG/05

Hansen RG and Heide-Jørgensen MP (2019) Re-calculations of abundance of narwhals to three management units in East Greenland, SC/26/NEGWG/20

Hansen RG, Borchers D and Heide-Jørgensen MP (2019) Abundance of narwhals summering in East Greenland and narwhals wintering in the North Water and Northeast Water polynyas, SC/26/NEGWG/04

Hansen RG, Witting L, Heide-Jørgensen MP (2019) Calf production of narwhals in Scoresby Sound, SC/26/NEGWG/11

Heide-Jørgensen MP, Blackwell SB, Williams TM, Sinding M-HS, Skovrind M, Tervo OM, Garde E, Hansen RG, Ditlevsen S (2019) Temperature dependent habitat selection of narwhals. NAMMCO SC/26/NEGWG/13

Heide-Jørgensen MP, Ugarte F, Hansen RG, Chambault P, Garde E (2019) A regime shift in South-east Greenland. NAMMCO SC/26/NEGWG/12

Tervo O, Ditlevsen S, Garde E, Hansen RG, Ngo C, Heide-Jørgensen MP (2019) Preliminary results on the short-term effects of airgun pulses on the acoustic behaviour of narwhals. NAMMCO SC/26/NEGWG/08

Garde E, Hansen RG, Heide-Jørgensen MP (2018) Catch Statistics and age structures for Atlantic walrus in Greenland 1993 to 2018. NAMMCO SC/25/14-WWG/04.

Hansen R et al., Current and past abundance of walrus in East Greenland. NAMMCO SC/25/14- WWG/07

Hansen R, Recalculations for North Water Survey 2018. NAMMCO SC/25/14-WWG/06b

Hansen R, Recalculations for Summer Survey in East Greenland. NAMMCO SC/25/14-WWG/07b

Hansen R. & Heide-Jørgensen MP, Abundance of walrus in the North Water 2018. SC/25/14- WWG/06

Hansen R. Updated abundance estimates of whales in West and East Greenland in 2005-2015. Hansen RG et al. IWC SC/DXX/AWMPXX

Heide-Jørgensen MP, Merkel F, Stern H, Garde E, Hansen RG (2018). The sea ice recedes – but the walrus just stay. NAMMCO SC/25/14-WWG/05.

Ferguson S and Hansen RG. Eastern High Arctic – Baffin Bay and West Greenland Beluga Whale Stock. NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex10

Hansen et al. (2017) Abundance of narwhals at the hunting areas in East Greenland in 2008 and 2016. NAMMCO/SC/24-JCNB/SWG/2017-JWG/18

Hansen et al. (2017) Geometer status update. NAMMCO/SC/24-JCNB/SWG/2017-JWG/O20

Hansen RG, Heide-Jørgensen MP, Garde E (2017) Melville Bay Narwhal Stock. NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex25

Hansen RG, Heide-Jørgensen MP, Garde E (2017) Northeast Greenland Narwhal Stock (North of Scoresby Sound). NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex29

Hansen RG, Heide-Jørgensen MP, Garde E (2017) East Greenland Narwhal Stock. NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex28

Hansen RG, Heide-Jørgensen MP, Garde E (2017) Inglefield Bredning Narwhal Stock. NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex24

Watt CA, Hansen RG (2017) Admiralty Inlet Narwhal Stock. NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex22

Watt CA, Hansen RG (2017) Eclipse Sound Narwhal Stock. NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex23

Watt CA, Hansen RG (2017) Jones Sound Narwhal Stock. NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex20

Watt CA, Hansen RG (2017) Smith Sound Narwhal Stock. NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex21

Watt CA, Hansen RG (2017) Somerset Island Narwhal Stock. NAMMCO (2018) Report of the Global Review of Monodontids. 13-16 March 2017, Hillerød Denmark/Annex19

Hansen R, Heide-Jørgensen MP (2016) Abundance of whales in East and West Greenland in 2015. IWC SC/D16//AWMP/06

Heide-Jørgensen MP, Hansen RG (2016) An index of the relative abundance of minke whales in West Greenland. NAMMCO SC/23/AE/06

Watt CA, Witting L, Marcoux M, Doniol-Valcroze T, Guldborg Hansen R, Hobbs R, Ferguson SH, Heide-Jørgensen MP (2016) Population modelling for narwhal (Monodon monoceros) stocks shared between eastern Canada and West Greenland. DFO Can. Sci. Advis. Sec. Res. Doc. 2016

Hansen et al. Abundance of narwhals in Melville Bay. NAMMCO/SC/22-JCNB/SWG/2015-JWG/14

Hansen et al. narwhals in E Baffin Bay. NAMMCO/SC/22-JCNB/SWG/2015-JWG/15

Heide-Jørgensen MP, Burt LM, Hansen RG, Nielsen NH, Rasmussen M, Fossette S, Stern H (2013) The significance of the North Water Polynya to Arctic Top Predators, NAMMCO/SC/20/WWG/010

Heide-Jørgensen MP, Hansen RG and Nielsen NH (2013) Satellite tracking of Atlantic walruses from Northwest Greenland, NAMMCO/SC/20/WWG/04

Heide-Jørgensen MP, Laidre KL, Fossette S, Rasmussen M, Nielsen NH, Hansen RG (2013) Abundance of walruses in Eastern Baffin Bay and Davis Strait, NAMMCO/SC/20/WWG/011

Nielsen NH, Hansen RG, Teilmann J, Heide-Jørgensen MP (2013) Extensive offshore movements of harbour porpoises (Phocoena phocoena), NAMMCO/SC/20/HP/08

Hansen RG, Heide-Jørgensen MP (2012) Aerial survey of bowhead whales in West Greenland 2012 – preliminary analyses

Heide-Jørgensen MP, Hansen RG (2012) Catch statistics for belugas in Greenland 1862 to 2011. NAM-MCO/SC/19-JCNB/ SWG/2012-JWG/14

Heide-Jørgensen MP, Hansen RG (2012) Migrations and concentrations areas of bowhead whales in East Greenland

Heide-Jørgensen MP, Hansen RG (2012) Reconstructing catch statistics for narwhals in Greenland 1862 to 2011. A preliminary compilation, NAMMCO/SC/19-JCNB/SWG/2012-JWG/15

Heide-Jørgensen MP, Nielsen NH, Hansen RG (2012) Satellite tracking of narwhals in East Greenland. NAMMCO/SC/19-JCNB/SWG/2012-JWG/18

Hansen RG, Heide-Jørgensen MP, and Laidre KL (2010) Recent abundance of bowhead whales in Isabella Bay, Canada 6pp IWC SC/62/BRG 28

Heide-Jørgensen MP, EW Born, KL Laidre, S Fossette, RG Hansen, R Dietz, M Rasmussen and H Stern (2009). Abundance and trends in abundance of the Atlantic walrus (Odobenus rosmarus rosmarus) in Central West Greenland. NAMMCO/SC/17/WWG/04

Heide-Jørgensen MP, KL Laidre , ML Burt, DL Borchers, RG Hansen, M Rasmussen and S Fossette (2009) Abundance of narwhals (Monodon monoceros) in Greenland. NAMMCO/SC/16-JCNB/SWG/2009-JWG/20

Heide-Jørgensen MP, L Witting, KL Laidre and RG Hansen (2009) Revised estimates of minke whale abundance in West Greenland in 2007. 19pp. IWC SC Madeira SC/61/AWMP4

Heide-Jørgensen MP, L Witting, KL Laidre, RG Hansen and M Rasmussen (2009) Fully corrected estimates of minke whale abundance in West Greenland in 2007. SC/M09/AWMP3

Heide-Jørgensen, M.P., K.L. Laidre, R.G. Hansen, M. Rasmussen, M.L. Burt, D.L. Borchers, R. Dietz and J. Teilmann. Revised abundance estimates of humpback whales in West Greenland. IWC SC/60/AWMP7