Censuses of penguin, blue-eyed shag, and southern giant petrel populations in the Antarctic Peninsula region, 1994–2000

Polar Record ◽  
2000 ◽  
Vol 36 (199) ◽  
pp. 323-334 ◽  
Author(s):  
Ron Naveen ◽  
Steven C. Forrest ◽  
Rosemary G. Dagit ◽  
Louise K. Blight ◽  
Wayne Z. Trivelpiece ◽  
...  
Keyword(s):  
Antarctic Peninsula ◽  
Census Data ◽  
Population Data ◽  
Gentoo Penguin ◽  
Population Estimates ◽  
Giant Petrel ◽  
Southern Giant Petrel ◽  
The Antarctic ◽  
First Time ◽  
Pygoscelid Penguins

AbstractThis paper presents new census data and population estimates for penguins, blue-eyed shags, and southern giant petrels from 26 sites in the Antarctic Peninsula, collected by the Antarctic Site Inventory from 1994 to 2000. For nine sites, population data or estimates are published for the first time. The newly discovered gentoo penguin population of 215 nests at Herofna Island (63°24'S, 54°36'W) represents the easternmost location where this species has been found breeding in the Peninsula. All three pygoscelid penguins — gentoo, Adelie, and chinstrap — were found breeding at Gourdin Island (63° 12'S, 57° 18'W), the fourth known site where these species nest contiguously in the Peninsula. During the period, significant declines in nesting populations of blue-eyed shag were documented at three northwestern Peninsula locations.

Populations of breeding birds in Byers Peninsula, Livingston Island, South Shetland Islands

2013 ◽  
Vol 25 (2) ◽  
pp. 303-306 ◽  
Author(s):  
J.A. Gil-Delgado ◽  
J. González-Solís ◽  
A. Barbosa
Keyword(s):  
Gentoo Penguin ◽  
Chinstrap Penguin ◽  
South Shetland Islands ◽  
Giant Petrel ◽  
Shetland Islands ◽  
Kelp Gull ◽  
Livingston Island ◽  
Breeding Populations ◽  
Southern Giant Petrel ◽  
The Antarctic

AbstractData about breeding populations of birds in the Antarctica are rare and fragmented. Thus, information about the status of the breeding populations of Antarctic birds is crucial given the current scenario of climate change, which is particularly acute in Antarctica. This paper presents new information about the populations of the Antarctic tern Sterna vittata, the kelp gull Larus dominicanus, the southern giant petrel Macronectes giganteus, the Antarctic skua Catharacta antarctica lonnbergi, the chinstrap penguin Pygoscelis antarctica and the gentoo penguin Pygoscelis papua on Byers Peninsula (Livingston Island, South Shetland Islands). We used line transects counts to estimate both densities and numbers of nests of the different species. We estimate that there are 398.96 birds km-2 of southern giant petrels (2793 individuals), 62.4 birds km-2 of Antarctic tern (3746 individuals) and 269.1 birds km-2 of kelp gull (1884 individuals). Furthermore, we found 15 nests of Antarctic skua in 25 km2, from which we can estimate that 60–91 birds must breed on Byers Peninsula. We also censused two colonies of gentoo penguins (3000 and 1200 pairs) and 50 pairs of chinstrap. Compared to previous estimates, gentoo penguins seem to have increased whereas chinstrap penguin have decreased. Finally, the populations of Antarctic tern, southern giant petrel and kelp gull have stabilized or slightly increased.

scholarly journals How Does Administrative Data Compare with Census Data for the Measurement of Internal Migration? The Case of Northern Ireland, 2001–2011

2021 ◽  
Author(s):  
Brian Foley ◽  
Tony Champion ◽  
Ian Shuttleworth
Keyword(s):  
Administrative Data ◽  
Internal Migration ◽  
Census Data ◽  
Local Population ◽  
Population Data ◽  
Population Estimates ◽  
Demographic Groups ◽  
Small Areas ◽  
Intercensal Period ◽  
Statistical Agencies

AbstractThe paper compares and contrasts internal migration measured by healthcard-based administrative data with census figures. This is useful because the collection of population data, its processing, and its dissemination by statistical agencies is becoming more reliant on administrative data. Statistical agencies already use healthcard data to make migration estimates and are increasingly confident about local population estimates from administrative sources. This analysis goes further than this work as it assesses how far healthcard data can produce reliable data products of the kind to which academics are accustomed. It does this by examining migration events versus transitions over a full intercensal period; population flows into and out of small areas; and the extent to which it produces microdata on migration equivalent to that in the census. It is shown that for most demographic groups and places healthcard data is an adequate substitute for census-based migration counts, the exceptions being for student households and younger people. However, census-like information is still needed to provide covariates for analysis and this will still be required whatever the future of the traditional census.

Leukocyte counts in different populations of Antarctic Pygoscelid penguins along the Antarctic Peninsula

Polar Biology ◽  
2015 ◽  
Vol 39 (2) ◽  
pp. 199-206 ◽  
Author(s):  
Verónica L. D’Amico ◽  
Bertellotti Marcelo ◽  
Jesús Benzal ◽  
Néstor Coria ◽  
Virginia Vidal ◽  
...  
Keyword(s):  
Antarctic Peninsula ◽  
Leukocyte Counts ◽  
Different Populations ◽  
The Antarctic ◽  
Pygoscelid Penguins

Nautilids from the Upper Cretaceous of the James Ross Basin, Antarctic Peninsula

2005 ◽  
Vol 17 (2) ◽  
pp. 267-280 ◽  
Author(s):  
MARCELA CICHOWOLSKI ◽  
ALFREDO AMBROSIO ◽  
ANDREA CONCHEYRO
Keyword(s):  
New Species ◽  
Antarctic Peninsula ◽  
Upper Cretaceous ◽  
Single Species ◽  
Central Chile ◽  
James Ross Island ◽  
The Antarctic ◽  
First Time ◽  
A New Species ◽  
Lower Campanian

To date, Cretaceous nautilids from the Antarctic Peninsula have received little attention and only a single species had been reported, Eutrephoceras simile Spath, from Seymour, Snow Hill, and James Ross islands. Currently, it is considered a synonym of Eutrephoceras subplicatum (Steinmann), which has also been described from the Upper Cretaceous of central Chile, southern Argentina and Angola. Here, we report and describe E. subplicatum in detail, based on specimens from the Lower Campanian–Maastrichtian of Vega, Seymour and James Ross islands, presenting, for the first time, embryonic conch features related to the palaeoecology of these organisms. The nauta of this species had a diameter of approximately 30 mm with 5–6 septa. In addition, we describe a new species, Eutrephoceras antarcticum, and one specimen assigned to the same genus in open nomenclature, both recovered from the Lower Campanian beds of James Ross Island.

A new species and new records of Lecanora (Lecanoraceae, lichenized Ascomycota) with usnic acid from the Antarctic region

Phytotaxa ◽  
2016 ◽  
Vol 261 (2) ◽  
pp. 185 ◽  
Author(s):  
IRIS NADIA DE LA ROSA ◽  
ALFREDO PASSO ◽  
JUAN MANUEL RODRÍGUEZ ◽  
JORGE OSCAR CHIAPELLA ◽  
MARÍA INÉS MESSUTI
Keyword(s):  
New Species ◽  
Secondary Metabolite ◽  
Antarctic Peninsula ◽  
New Records ◽  
Usnic Acid ◽  
Distribution Range ◽  
Antarctic Region ◽  
The Antarctic ◽  
First Time ◽  
A New Species

A new species of Lecanora, L. flavocrassa, is described from the Antarctic region. Additionally, L. stenotropa is registered for the first time from Antarctica and the distribution range of L. intricata is extended to the Antarctic Peninsula. A key to the species of Lecanora from Antarctica that contain usnic acid as secondary metabolite is presented.

scholarly journals Implications for Tracking SDG Indicator Metrics with Gridded Population Data

2021 ◽  
Vol 13 (13) ◽  
pp. 7329
Author(s):  
Cascade Tuholske ◽  
Andrea E. Gaughan ◽  
Alessandro Sorichetta ◽  
Alex de Sherbinin ◽  
Agathe Bucherie ◽  
...  
Keyword(s):  
Case Studies ◽  
Census Data ◽  
Flash Flood ◽  
Spatial Scales ◽  
Population Data ◽  
End Users ◽  
Population Estimates ◽  
Middle Income ◽  
Hazard Exposure ◽  
Flood Susceptibility

Achieving the seventeen United Nations Sustainable Development Goals (SDGs) requires accurate, consistent, and accessible population data. Yet many low- and middle-income countries lack reliable or recent census data at the sufficiently fine spatial scales needed to monitor SDG progress. While the increasing abundance of Earth observation-derived gridded population products provides analysis-ready population estimates, end users lack clear use criteria to track SDGs indicators. In fact, recent comparisons of gridded population products identify wide variation across gridded population products. Here we present three case studies to illuminate how gridded population datasets compare in measuring and monitoring SDGs to advance the “fitness for use” guidance. Our focus is on SDG 11.5, which aims to reduce the number of people impacted by disasters. We use five gridded population datasets to measure and map hazard exposure for three case studies: the 2015 earthquake in Nepal; Cyclone Idai in Mozambique, Malawi, and Zimbabwe (MMZ) in 2019; and flash flood susceptibility in Ecuador. First, we map and quantify geographic patterns of agreement/disagreement across gridded population products for Nepal, MMZ, and Ecuador, including delineating urban and rural populations estimates. Second, we quantify the populations exposed to each hazard. Across hazards and geographic contexts, there were marked differences in population estimates across the gridded population datasets. As such, it is key that researchers, practitioners, and end users utilize multiple gridded population datasets—an ensemble approach—to capture uncertainty and/or provide range estimates when using gridded population products to track SDG indicators. To this end, we made available code and globally comprehensive datasets that allows for the intercomparison of gridded population products.

scholarly journals Annotated and illustrated list of echinoderms collected during the Colombian scientific expeditions to the Antarctica (2016-2019)

2021 ◽  
Vol 50 (SuplEsp) ◽  
pp. 85-108
Author(s):  
Giomar Borrero ◽  
Daniela Yepes
Keyword(s):  
Geographical Distribution ◽  
Antarctic Peninsula ◽  
Sea Cucumber ◽  
Base Line ◽  
Antarctic Shelf ◽  
The Antarctic ◽  
First Time ◽  
Oceanographic Conditions

I n order to contribute to the base line of knowledge that is being built of the Gerlache Strait and the adjacent areas, the echinoderms collected during the Scientific Expeditions from Colombia to Antarctica carried out between 2016 and 2019 as part of the project “Biodiversity and oceanographic conditions of the Gerlache Strait, Biogerlache-Antártica” are presented. Eleven stations between 54 and 523 m deep were sampled, using sediment dredgers that captured incidentally some individuals from the mega and macro-epifauna, which were separated, reviewed and identified. Twentynine (29) individuals were obtained in five of the sampled stations, belonging to 13 morphotypes. Ophiuroidea was the richest class (five morphotypes), followed by Holothuroidea (four), Asteroidea (two) and Crinoidea (two). Morphological and distribution comments are presented, as well as general and detailed images of each morphotype. Among the contributions to the inventory of echinoderms in the area, it is highlighted the sea cucumber genus Taeniogyrus Semper, 1867 that is registered for the first time for the Antarctic peninsula and the crinoid species Anthometrina adriani (Bell, 1908) that extends its geographical distribution, confined to the high-Antarctic shelf, up to the Gerlache Strait ( 64° 39 ‘S).

scholarly journals Dynamics of Numbers and Occurrence of Colonial Species of Birds in the Area of Ukrainian Antarctic Station Akademik Vernadsky

2019 ◽  
Vol 53 (6) ◽  
pp. 491-500
Author(s):  
V. M. Smagol ◽  
D. V. Pilipenko ◽  
A. O. Dzhulai
Keyword(s):  
Antarctic Peninsula ◽  
Water Area ◽  
Gentoo Penguin ◽  
Chinstrap Penguin ◽  
Pygoscelis Adeliae ◽  
The North ◽  
Pygoscelis Antarctica ◽  
Time Gap ◽  
The Antarctic ◽  
Green Island

Abstract The research covers water area, island archipelagos and coastal line of the Antarctic Peninsula from 65°31ʹ S, 64°25ʹ W in the South to 65°03ʹ S, 63°53ʹ W in the North. There was time gap of 7 years between the researches (2011 and 2018), which allows to define tendencies in development of individual colonies and to make conclusion about success of existence of a given species. The work itself was carried out during the first half of January, that is in the time when the stage of brooding ends and the period of hatching starts. As of 2011, 12 nesting points of gentoo penguin (Pygoscelis papua) with total number of 8,342 pairs were found in the region under investigation. Till 2018, quantity of the colony grew to 14, with total number of 14,105 pairs. For seven years, quantity of nesting points of aelie penguin (Pygoscelis adeliae) almost did not change (4 colonies). Instead, total number of the species decreased somewhat: from 3559 pairsin 2011 to 3295 onesin 2018. Number of chinstrap penguin (Pygoscelis antarctica) in united stable locality for nesting also decreased from 26 pairsin 2011 to19 onesin 2018. Booth Island (65°04ʹ S, 64°02ʹ W) for chinstrap penguins and Green Island (65°19ʹ S, 64°09ʹ W) for gentoo penguins are the southern most points of nesting range of the species. Also, 7 colonies of antarctic shag (Phalacrocorax bransfieldensis) were revealed in the region under investigation. For seven years from 2011 to 2018 total number of the species in the region under investigation grew from 190 pairs to 299, and in most cases the antarctics shag forms settlements jointly with penguins.

Reighardia sternae (Diesing, 1864) (Pentastomida) from seabirds in Antarctica

1987 ◽  
Vol 65 (5) ◽  
pp. 1289-1291 ◽  
Author(s):  
Eric P. Hoberg
Keyword(s):  
Life Cycle ◽  
Antarctic Peninsula ◽  
Mature Female ◽  
Immature Female ◽  
Larus Dominicanus ◽  
Breeding Grounds ◽  
Catharacta Maccormicki ◽  
The Antarctic ◽  
First Time ◽  
South Polar

Specimens of the pentastome Reighardia sternae (Diesing, 1864) are reported for the first time in avian hosts from Antarctica. Mature female specimens were found in a southern black-backed gull (Larus dominicanus Lichtenstein) (1 of 21 examined) while an immature female was found in a south polar skua (Catharacta maccormicki (Saunders)) (1 of 20). Species of Reighardia have not previously been reported among any of the Stercorariinae. The degree of development of individuals of R. sternae provided evidence that the life cycle of this pentastome could be completed on the breeding grounds of its hosts in the region of the Antarctic Peninsula.

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