Using Fixed-Wing UAV for Detecting and Mapping the Distribution and Abundance of Penguins on the South Shetlands Islands, Antarctica

Antarctic marine ecosystems undergo enormous changes, presumably due to climate change and fishery. Unmanned aerial vehicles (UAVs) have an unprecedented potential for measuring these changes by mapping indicator species such as penguins even in remote areas. We used a battery-powered fixed-wing UAV to survey colonies along a 30-km stretch of the remote coast of southwest King George Island and northwest Nelson Island (South Shetland Islands, Antarctica) during the austral summer 2016/17. With multiple flights, we covered a total distance of 317 km. We determined the exact position of 14 chinstrap penguin colonies, including two small unknown colonies, with a total abundance of 35,604 adults. To model the number of occupied nests based on the number of adults counted in the UAV imagery we used data derived from terrestrial time-lapse imagery. The comparison with previous studies revealed a decline in the total abundance of occupied nests. However, we also found four chinstrap penguin colonies that have grown since the 1980s against the general trend on the South Shetland Islands. The results proved the suitability of the use of small and lightweight fixed-wing UAVs with electric engines for mapping penguin colonies in remote areas in the Antarctic.

[1]  David G. Ainley,et al.  The Adélie Penguin: Bellwether of Climate Change , 2002 .

[2]  David W Johnston,et al.  Unoccupied Aircraft Systems in Marine Science and Conservation. , 2019, Annual review of marine science.

[3]  M. Węgrzyn,et al.  Pygoscelid penguins breeding distribution and population trends at Lions Rump rookery, King George Island , 2013 .

[4]  E. Woehler,et al.  The distribution and abundance of Antarctic and Subantarctic penguins , 1993 .

[5]  Hanumant Singh,et al.  Multi-modal survey of Adélie penguin mega-colonies reveals the Danger Islands as a seabird hotspot , 2018, Scientific Reports.

[6]  Graham Rush,et al.  Can drones count gulls? Minimal disturbance and semiautomated image processing with an unmanned aerial vehicle for colony‐nesting seabirds , 2018, Ecology and evolution.

[7]  M. Sander,et al.  Recent decrease in chinstrap penguin (Pygoscelis antarctica) populations at two of Admiralty Bay’s islets on King George Island, South Shetland Islands, Antarctica , 2007, Polar Biology.

[8]  Akinori Takahashi,et al.  Chinstrap penguin foraging area associated with a seamount in Bransfield Strait, Antarctica , 2015 .

[9]  New methods and technologies for regional-scale abundance estimation of land-breeding marine animals: application to Adélie penguin populations in East Antarctica , 2013, Polar Biology.

[10]  José Emilio Meroño de Larriva,et al.  An Analysis of the Influence of Flight Parameters in the Generation of Unmanned Aerial Vehicle (UAV) Orthomosaicks to Survey Archaeological Areas , 2016, Sensors.

[11]  W. Fagan,et al.  CENSUSES OF PENGUIN, BLUE-EYED SHAG PHALACROCORAX ATRICEPS AND SOUTHERN GIANT PETREL MACRONECTES GIGANTEUS POPULATIONS ON THE ANTARCTIC PENINSULA, 2001-2007 , 2008 .

[12]  Rune Storvold,et al.  A review of unmanned vehicles for the detection and monitoring of marine fauna. , 2019, Marine pollution bulletin.

[13]  Douglas J. Krause,et al.  A small unmanned aerial system for estimating abundance and size of Antarctic predators , 2015, Polar Biology.

[14]  J. W. Thomson,et al.  A composite gazetteer of Antarctica , 2000, Polar Record.

[15]  L. Peck,et al.  Climate change and the marine ecosystem of the western Antarctic Peninsula , 2007, Philosophical Transactions of the Royal Society B: Biological Sciences.

[16]  M. Favero,et al.  THE STATUS OF BREEDING BIRDS AT HARMONY POINT, NELSON ISLAND, ANTARCTICA IN SUMMER 1995/96 , 1998 .

[17]  E. Woehler,et al.  Re-Constructing Historical Adélie Penguin Abundance Estimates by Retrospectively Accounting for Detection Bias , 2015, PloS one.

[18]  Steve Gardner,et al.  Small Unmanned Aerial Systems for Estimating Abundance of Krill-Dependent Predators: a Feasibility Study with Preliminary Results , 2010 .

[19]  Mathew R. Schwaller,et al.  A remote sensing analysis of Adelie penguin rookeries , 1989 .

[20]  M. Dąbski,et al.  Application of UAV BVLOS remote sensing data for multi-faceted analysis of Antarctic ecosystem , 2018, Remote Sensing of Environment.

[21]  Frank Dellaert,et al.  Structure from motion without correspondence , 2000, Proceedings IEEE Conference on Computer Vision and Pattern Recognition. CVPR 2000 (Cat. No.PR00662).

[22]  Andrew Fleming,et al.  Using the unique spectral signature of guano to identify unknown seabird colonies , 2015 .

[23]  C. Southwell,et al.  Integrating count effort by seasonally correcting animal population estimates (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adelie penguins as a case study , 2010 .

[24]  Measuring the influence of unmanned aerial vehicles on Adélie penguins , 2016, Polar Biology.

[25]  J. Croxall,et al.  The distribution of penguins on the Antarctic peninsula and islands of the Scotia Sea , 1979 .

[26]  G. Milinevsky,et al.  Estimating nest‐level phenology and reproductive success of colonial seabirds using time‐lapse cameras , 2018 .

[27]  Tomasz Goetzendorf-Grabowski,et al.  Design of UAV for photogrammetric mission in Antarctic area , 2017 .

[28]  A comprehensive review of the phenology of Pygoscelis penguins , 2016, Polar Biology.

[29]  C. Southwell,et al.  Remotely-operating camera network expands Antarctic seabird observations of key breeding parameters for ecosystem monitoring and management , 2015 .

[30]  Ron Naveen,et al.  In stark contrast to widespread declines along the Scotia Arc, a survey of the South Sandwich Islands finds a robust seabird community , 2015, Polar Biology.

[31]  M. Schwaller,et al.  A continent-wide search for Antarctic petrel breeding sites with satellite remote sensing , 2018, Remote Sensing of Environment.

[32]  Mathew R. Schwaller,et al.  Continental-scale mapping of Adélie penguin colonies from Landsat imagery , 2013 .

[33]  Susan A. Murphy,et al.  Monographs on statistics and applied probability , 1990 .

[34]  J. González‐Solís,et al.  Populations of breeding birds in Byers Peninsula, Livingston Island, South Shetland Islands , 2013, Antarctic Science.

[35]  P. Enderlein,et al.  A protocol for the aerial survey of penguin colonies using UAVs1 , 2015 .

[36]  H. Peter,et al.  Sensitivity of Adélie and Gentoo penguins to various flight activities of a micro UAV , 2018, Polar Biology.

[37]  E. Murphy,et al.  Contrasting population changes in sympatric penguin species in association with climate warming , 2006 .

[38]  A. Barbosa,et al.  Breeding group size, nest position and breeding success in the chinstrap penguin , 1997, Polar Biology.

[39]  W. Rees,et al.  What colour is penguin guano? , 2017, Antarctic Science.

[40]  M. Schwaller,et al.  Mapping the Abundance and Distribution of Adélie Penguins Using Landsat-7: First Steps towards an Integrated Multi-Sensor Pipeline for Tracking Populations at the Continental Scale , 2014, PloS one.

[41]  A. Kato,et al.  Spatially Extensive Standardized Surveys Reveal Widespread, Multi-Decadal Increase in East Antarctic Adélie Penguin Populations , 2015, PloS one.

[42]  Colin M. Harris,et al.  Aircraft operations near concentrations of birds in Antarctica: The development of practical guidelines , 2005 .

[43]  Izabela Karsznia,et al.  Study of fauna population changes on Penguin Island and Turret Point Oasis (King George Island, Antarctica) using an unmanned aerial vehicle , 2018, Polar Biology.

[44]  L. Krüger,et al.  Breeding sites and population of seabirds on Admiralty Bay, King George Island, Antarctica , 2015, Polar Biology.

[45]  M. Sander,et al.  Status and Trends of Antarctic Seabirds at Admiralty Bay, King George Island , 2006 .

[46]  D. Ainley,et al.  Ecological repercussions of historical fish extraction from the Southern Ocean , 2009 .

[47]  D. Bird,et al.  Wildlife research and management methods in the 21st century: Where do unmanned aircraft fit in?1 , 2015 .

[48]  E. Murphy,et al.  Environmental Change and Antarctic Seabird Populations , 2002, Science.

[49]  Jarrod C Hodgson,et al.  Precision wildlife monitoring using unmanned aerial vehicles , 2016, Scientific Reports.

[50]  A. Barbosa,et al.  Population decline of chinstrap penguins (Pygoscelis antarctica) on Deception Island, South Shetlands, Antarctica , 2012, Polar Biology.

[51]  Lian Pin Koh,et al.  Drones count wildlife more accurately and precisely than humans , 2017, bioRxiv.

[52]  G. Grenzdörffer.  UAS-based automatic bird count of a common gull colony , 2013 .

[53]  Thomas Mueller,et al.  First direct, site-wide penguin survey at Deception Island, Antarctica, suggests significant declines in breeding chinstrap penguins , 2012, Polar Biology.

[54]  W. Trivelpiece,et al.  Adélie and Chinstrap Penguins: Their Potential as Monitors of the Southern Ocean Marine Ecosystem , 1990 .