Australasian Antarctic Expedition 1911-1914
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Variable Expression of Myoglobin Among the Hemoglobinless Antarctic Icefishes (Channichthyidae͞oxygen Transport͞phylogenetics)
Proc. Natl. Acad. Sci. USA Vol. 94, pp. 3420–3424, April 1997 Physiology Variable expression of myoglobin among the hemoglobinless Antarctic icefishes (Channichthyidaeyoxygen transportyphylogenetics) BRUCE D. SIDELL*†‡,MICHAEL E. VAYDA*†,DEENA J. SMALL†,THOMAS J. MOYLAN*, RICHARD L. LONDRAVILLE*§, MENG-LAN YUAN†¶,KENNETH J. RODNICK*i,ZOE A. EPPLEY*, AND LORI COSTELLO† *School of Marine Sciences and Department of Zoology, †Department of Biochemistry, Microbiology and Molecular Biology, University of Maine, Orono, ME 04469 Communicated by George N. Somero, Stanford University, Pacific Grove, CA, January 13, 1997 (received for review October 24, 1996) ABSTRACT The important intracellular oxygen-binding Icefishes exhibit several unique physiological features. Car- protein, myoglobin (Mb), is thought to be absent from oxi- diovascular adaptations to compensate for lack of hemoglobin dative muscle tissues of the family of hemoglobinless Antarctic in the circulation include lower blood viscosity, increased heart icefishes, Channichthyidae. Within this family of fishes, which size, greater cardiac output, and increased blood volume is endemic to the Southern Ocean surrounding Antarctica, compared with their red-blooded notothenioid relatives (2, there exist 15 known species and 11 genera. To date, we have 14–16). Combined with the high aqueous solubility of oxygen examined eight species of icefish (representing seven genera) at severely cold body temperature, these cardiovascular fea- using immunoblot analyses. Results indicate that Mb is tures are considered necessary to ensure that tissues obtain present in heart ventricles from five of these species of icefish. adequate amounts of oxygen carried in physical solution by the Mb is absent from heart auricle and oxidative skeletal muscle plasma. -
Jan Jansen, Dipl.-Biol
The spatial, temporal and structural distribution of Antarctic seafloor biodiversity by Jan Jansen, Dipl.-Biol. Under the supervision of Craig R. Johnson Nicole A. Hill Piers K. Dunstan and John McKinlay Submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Quantitative Antarctic Science Institute for Marine and Antarctic Studies (IMAS), University of Tasmania May 2019 In loving memory of my dad, whose passion for adventure, sport and all of nature’s life and diversity inspired so many kids, including me, whose positive and generous attitude touched so many people’s lives, and whose love for the ocean has carried over to me. The spatial, temporal and structural distribution of Antarctic seafloor biodiversity by Jan Jansen Abstract Biodiversity is nature’s most valuable resource. The Southern Ocean contains significant levels of marine biodiversity as a result of its isolated history and a combination of exceptional environmental conditions. However, little is known about the spatial and temporal distribution of biodiversity on the Antarctic continental shelf, hindering informed marine spatial planning, policy development underpinning regulation of human activity, and predicting the response of Antarctic marine ecosystems to environmental change. In this thesis, I provide detailed insight into the spatial and temporal distribution of Antarctic benthic macrofaunal and demersal fish biodiversity. Using data from the George V shelf region in East Antarctica, I address some of the main issues currently hindering understanding of the functioning of the Antarctic ecosystem and the distribution of biodiversity at the seafloor. The focus is on spatial biodiversity prediction with particular consideration given to previously unavailable environmental factors that are integral in determining where species are able to live, and the poor relationships often found between species distributions and other environmental factors. -
Mitochondrial DNA, Morphology, and the Phylogenetic Relationships of Antarctic Icefishes
MOLECULAR PHYLOGENETICS AND EVOLUTION Molecular Phylogenetics and Evolution 28 (2003) 87–98 www.elsevier.com/locate/ympev Mitochondrial DNA, morphology, and the phylogenetic relationships of Antarctic icefishes (Notothenioidei: Channichthyidae) Thomas J. Near,a,* James J. Pesavento,b and Chi-Hing C. Chengb a Center for Population Biology, One Shields Avenue, University of California, Davis, CA 95616, USA b Department of Animal Biology, 515 Morrill Hall, University of Illinois, Urbana, IL 61801, USA Received 10 July 2002; revised 4 November 2002 Abstract The Channichthyidae is a lineage of 16 species in the Notothenioidei, a clade of fishes that dominate Antarctic near-shore marine ecosystems with respect to both diversity and biomass. Among four published studies investigating channichthyid phylogeny, no two have produced the same tree topology, and no published study has investigated the degree of phylogenetic incongruence be- tween existing molecular and morphological datasets. In this investigation we present an analysis of channichthyid phylogeny using complete gene sequences from two mitochondrial genes (ND2 and 16S) sampled from all recognized species in the clade. In addition, we have scored all 58 unique morphological characters used in three previous analyses of channichthyid phylogenetic relationships. Data partitions were analyzed separately to assess the amount of phylogenetic resolution provided by each dataset, and phylogenetic incongruence among data partitions was investigated using incongruence length difference (ILD) tests. We utilized a parsimony- based version of the Shimodaira–Hasegawa test to determine if alternative tree topologies are significantly different from trees resulting from maximum parsimony analysis of the combined partition dataset. Our results demonstrate that the greatest phylo- genetic resolution is achieved when all molecular and morphological data partitions are combined into a single maximum parsimony analysis. -
Terra Nova Bay, Ross Sea
MEASURE 14 - ANNEX Management Plan for Antarctic Specially Protected Area No 161 TERRA NOVA BAY, ROSS SEA 1. Description values to be protected A coastal marine area encompassing 29.4km2 between Adélie Cove and Tethys Bay, Terra Nova Bay, is proposed as an Antarctic Specially Protected Area (ASPA) by Italy on the grounds that it is an important littoral area for well-established and long-term scientific investigations. The Area is confined to a narrow strip of waters extending approximately 9.4km in length immediately to the south of the Mario Zucchelli Station (MZS) and up to a maximum of 7km from the shore. No marine resource harvesting has been, is currently, or is planned to be, conducted within the Area, nor in the immediate surrounding vicinity. The site typically remains ice-free in summer, which is rare for coastal areas in the Ross Sea region, making it an ideal and accessible site for research into the near-shore benthic communities of the region. Extensive marine ecological research has been carried out at Terra Nova Bay since 1986/87, contributing substantially to our understanding of these communities which had not previously been well-described. High diversity at both species and community levels make this Area of high ecological and scientific value. Studies have revealed a complex array of species assemblages, often co-existing in mosaics (Cattaneo-Vietti, 1991; Sarà et al., 1992; Cattaneo-Vietti et al., 1997; 2000b; 2000c; Gambi et al., 1997; Cantone et al., 2000). There exist assemblages with high species richness and complex functioning, such as the sponge and anthozoan communities, alongside loosely structured, low diversity assemblages. -
Rebecca GORNIAK1*, Emilio RIGINELLA2, Nils KOSCHNICK1, and Vladimir LAPTIKHOVSKY3
ACTA ICHTHYOLOGICA ET PISCATORIA (2020) 50 (1): 121–125 DOI: 10.3750/AIEP/02739 FIRST DATA ON THE DAILY FOOD CONSUMPTION BY ANTARCTIC FISH TREMATOMUS HANSONI (ACTINOPTERYGII: PERCIFORMES: NOTOTHENIIDAE) IN CAPTIVITY Rebecca GORNIAK1*, Emilio RIGINELLA2, Nils KOSCHNICK1, and Vladimir LAPTIKHOVSKY3 1Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) 2 Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn Napoli (SZN) 3Centre for Environment Fisheries and Aquaculture Science (Cefas) Gorniak R., Riginella E., Koschnick N., Laptikhovsky V.V. 2020. First data on the daily food consumption by Antarctic fish Trematomus hansoni (Actinopterygii: Perciformes: Nototheniidae) in captivity. Acta Ichthyol. Piscat. 50 (1): 121–125. Abstract. In this study, we present first observations on the feeding behaviour of an Antarctic notothenioid fish, the striped rockcod, Trematomus hansoni Boulenger, 1902. During 13 days of feeding experiment onboard RV Polarstern, the striped rockcod consumed an average of 1.0% BM · day–1 of Loligo reynaudii at the temperature around +1.0°C. The daily food ration of T. hansoni turned out to be lower than predicted by theoretical equations derived for fish living at higher temperatures but was similar to values observed in other Antarctic fish in captivity. Keywords: daily ration, Nototheniidae, captivity, temperature, Antarctica INTRODUCTION would be monitoring stomach fullness and the degree of The Antarctic is a unique environment encompassing food digestion in samples collected in the different times of the Southern Ocean, one of three major centres of origin the day with resolution no more than a few hours (La Mesa of marine biodiversity (Briggs 2003). One of the products et al. -
Comparison of Size Selectivity Between Marine Mammals and Commercial Fisheries with Recommendations for Restructuring Management Policies
NOAA Technical Memorandum NMFS-AFSC-159 Comparison of Size Selectivity Between Marine Mammals and Commercial Fisheries with Recommendations for Restructuring Management Policies by M. A. Etnier and C. W. Fowler U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Marine Fisheries Service Alaska Fisheries Science Center October 2005 NOAA Technical Memorandum NMFS The National Marine Fisheries Service's Alaska Fisheries Science Center uses the NOAA Technical Memorandum series to issue informal scientific and technical publications when complete formal review and editorial processing are not appropriate or feasible. Documents within this series reflect sound professional work and may be referenced in the formal scientific and technical literature. The NMFS-AFSC Technical Memorandum series of the Alaska Fisheries Science Center continues the NMFS-F/NWC series established in 1970 by the Northwest Fisheries Center. The NMFS-NWFSC series is currently used by the Northwest Fisheries Science Center. This document should be cited as follows: Etnier, M. A., and C. W. Fowler. 2005. Comparison of size selectivity between marine mammals and commercial fisheries with recommendations for restructuring management policies. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-159, 274 p. Reference in this document to trade names does not imply endorsement by the National Marine Fisheries Service, NOAA. NOAA Technical Memorandum NMFS-AFSC-159 Comparison of Size Selectivity Between Marine Mammals and Commercial Fisheries with Recommendations for Restructuring Management Policies by M. A. Etnier and C. W. Fowler Alaska Fisheries Science Center 7600 Sand Point Way N.E. Seattle, WA 98115 www.afsc.noaa.gov U.S. DEPARTMENT OF COMMERCE Carlos M. -
The Expedition of the Research Vessel "Polarstern" to the Antarctic in 2012 (ANT-XXVIII/4) Edited by Magnus Lucassen W
652 2012 The Expedition of the Research Vessel "Polarstern" to the Antarctic in 2012 (ANT-XXVIII/4) Edited by Magnus Lucassen with contributions of the participants ALFRED-WEGENER-INSTITUT FÜR POLAR- UND MEERESFORSCHUNG in der Helmholtz-Gemeinschaft D-27570 BREMERHAVEN Bundesrepublik Deutschland ISSN 1866-3192 Hinweis Notice Die Berichte zur Polar- und Meeresforschung The Reports on Polar and Marine Research are werden vom Alfred-Wegener-Institut für Polar- issued by the Alfred Wegener Institute for Polar und Meeresforschung in Bremerhaven* in un- and Marine Research in Bremerhaven*, Federal regelmäßiger Abfolge herausgegeben. Republic of Germany. They are published in irregular intervals. Sie enthalten Beschreibungen und Ergebnisse They contain descriptions and results of der vom Institut (AWI) oder mit seiner Unter- investigations in polar regions and in the seas stützung durchgeführten Forschungsarbeiten in either conducted by the Institute (AWI) or with its den Polargebieten und in den Meeren. support. Es werden veröffentlicht: The following items are published: — Expeditionsberichte — expedition reports (inkl. Stationslisten und Routenkarten) (incl. station lists and route maps) — Expeditions- und Forschungsergebnisse — expedition and research results (inkl. Dissertationen) (incl. Ph.D. theses) — wissenschaftliche Berichte der — scientific reports of research stations Forschungsstationen des AWI operated by the AWI — Berichte wissenschaftlicher Tagungen — reports on scientific meetings Die Beiträge geben nicht notwendigerweise die -
Downloaded Tri-Axial Acceleration Data and GPS Files, Analyses
Masello et al. Movement Ecology (2021) 9:24 https://doi.org/10.1186/s40462-021-00255-9 RESEARCH Open Access How animals distribute themselves in space: energy landscapes of Antarctic avian predators Juan F. Masello1* , Andres Barbosa2, Akiko Kato3, Thomas Mattern1,4, Renata Medeiros5,6, Jennifer E. Stockdale5, Marc N. Kümmel7, Paco Bustamante8,9, Josabel Belliure10, Jesús Benzal11, Roger Colominas-Ciuró2, Javier Menéndez-Blázquez2, Sven Griep7, Alexander Goesmann7, William O. C. Symondson5 and Petra Quillfeldt1 Abstract Background: Energy landscapes provide an approach to the mechanistic basis of spatial ecology and decision- making in animals. This is based on the quantification of the variation in the energy costs of movements through a given environment, as well as how these costs vary in time and for different animal populations. Organisms as diverse as fish, mammals, and birds will move in areas of the energy landscape that result in minimised costs and maximised energy gain. Recently, energy landscapes have been used to link energy gain and variable energy costs of foraging to breeding success, revealing their potential use for understanding demographic changes. Methods: Using GPS-temperature-depth and tri-axial accelerometer loggers, stable isotope and molecular analyses of the diet, and leucocyte counts, we studied the response of gentoo (Pygoscelis papua) and chinstrap (Pygoscelis antarcticus) penguins to different energy landscapes and resources. We compared species and gentoo penguin populations with contrasting population trends. Results: Between populations, gentoo penguins from Livingston Island (Antarctica), a site with positive population trends, foraged in energy landscape sectors that implied lower foraging costs per energy gained compared with those around New Island (Falkland/Malvinas Islands; sub-Antarctic), a breeding site with fluctuating energy costs of foraging, breeding success and populations. -
The Role of Fish As Predators of Krill (Euphausia Superba) and Other Pelagic Resources in the Southern Ocean
CCAMLR Science, Vol. 19 (2012): 115–169 THE ROLE OF FISH AS PREDATORS OF KRILL (EUPHAUSIA SUPERBA) AND OTHER PELAGIC RESOURCES IN THE SOUTHERN OCEAN K.-H. Kock* Institut für Seefischerei Johann Heinrich von Thünen Institut Palmaille 9 D-22767 Hamburg Germany Email – [email protected] E. Barrera-Oro Dirección Nacional del Antártico Ministerio de Relaciones Exteriores, Comercio Internacional y Culto Buenos Aires Argentina M. Belchier British Antarctic Survey High Cross, Madingley Road Cambridge CB3 0ET United Kingdom M.A. Collins Director of Fisheries/Senior Executive Government of South Georgia and South Sandwich Islands Government House Stanley Falkland Islands G. Duhamel Museum National D’Histoire Naturelle 43 rue Cuvier F-75231 Paris Cedex 05 France S. Hanchet National Institute of Water and Atmospheric Research (NIWA) Ltd PO Box 893 Nelson New Zealand L. Pshenichnov YugNIRO 2 Sverdlov Street 98300 Kerch Ukraine D. Welsford and R. Williams Australian Antarctic Division Department of Sustainability, Environment, Water, Population and Communities 203 Channel Highway Kingston, Tasmania 7050 Australia 115 Kock et al. Abstract Krill forms an important part of the diet of many Antarctic fish species. An understanding of the role of fish as krill predators in the Southern Ocean is critical to understanding how changes in fish abundance, such as through fishing or environmental change, are likely to impact on the food webs in the region. First attempts to estimate the krill and pelagic food consumption by Antarctic demersal fish in the low Antarctic were made in the late 1970s/ early 1980s. Those estimates were constrained by a paucity of biomass estimates and the mostly qualitative nature of food studies. -
The Role of Notothenioid Fish in the Food Web of the Ross Sea Shelf Waters
Polar Biol (2004) 27: 321–338 DOI 10.1007/s00300-004-0599-z REVIEW M. La Mesa Æ J. T. Eastman Æ M. Vacchi The role of notothenioid fish in the food web of the Ross Sea shelf waters: a review Received: 27 June 2003 / Accepted: 23 January 2004 / Published online: 12 March 2004 Ó Springer-Verlag 2004 Abstract The Ross Sea, a large, high-latitude (72–78°S) are benthic predators on fish while smaller species feed embayment of the Antarctic continental shelf, averages mainly on benthic crustaceans. Channichthyids are less 500 m deep, with troughs to 1,200 m and the shelf break dependent on the bottom for food than other notothe- at 700 m. It is covered by pack ice for 9 months of the nioids. Some species combine benthic and pelagic life year. The fish fauna of about 80 species includes pri- styles; others are predominantly pelagic and all consume marily 4 families and 53 species of the endemic perci- euphausiids and/or fish. South polar skuas, Antarctic form suborder Notothenioidei. This review focuses on petrels, Ade´lie and emperor penguins, Weddell seals and the diet and role in the food web of notothenioids and minke and killer whales are the higher vertebrate com- top-level bird and mammal predators, and also includes ponents of the food web, and all prey on notothenioids new information on the diets of artedidraconids and to some extent. Based on the frequency of occurrence of bathydraconids. Although principally a benthic group, prey items in the stomachs of fish, bird and mammal notothenioids have diversified to form an adaptive predators, P. -
Diss 5.3 for Server
Convergence and plasticity in the adaptive radiation of cichlid fishes Inauguraldissertation zur Erlangung der Würde eines Doktors der Philosophie vorgelegt der Philosophisch-Naturwissenschaftlichen Fakultät der Universität Basel von Moritz Muschick aus Wolfenbüttel, Deutschland Basel, 2013 1 Genehmigt von der Philosophisch-Naturwissenschaftlichen Fakultät auf Antrag von Prof. Dr. Walter Salzburger (Departement Umweltwissenschaften, Universität Basel) und Prof. Dr. Patrik Nosil (Department of Ecology & Evolutionary Biology, University of Colorado at Boulder) Basel, den 15. November 2011 Prof. Dr. Martin Spiess (Dekan) Originaldokument gespeichert auf dem Dokumentenserver der Universität Basel edoc.unibas.ch Dieses Werk ist unter dem Vertrag „Creative Commons Namensnennung-Keine kommerzielle Nutzung-Keine Bearbeitung 2.5 Schweiz“ lizenziert. Die vollständige Lizenz kann unter creativecommons.org/licences/by-nc-nd/2.5/ch eingesehen werden. 2 Namensnennung-Keine kommerzielle Nutzung-Keine Bearbeitung 2.5 Schweiz Sie dürfen: das Werk vervielfältigen, verbreiten und öffentlich zugänglich machen Zu den folgenden Bedingungen: Namensnennung. Sie müssen den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen (wodurch aber nicht der Eindruck entstehen darf, Sie oder die Nutzung des Werkes durch Sie würden entlohnt). Keine kommerzielle Nutzung. Dieses Werk darf nicht für kommerzielle Zwecke verwendet werden. Keine Bearbeitung. Dieses Werk darf nicht bearbeitet oder in anderer Weise verändert werden. • Im Falle einer Verbreitung -
Trophic-Based Analyses of the Scotia Sea Ecosystem with an Examination of the Effects of Some Data Limitations and Uncertainties
Trophic-based analyses of the Scotia Sea ecosystem with an examination of the effects of some data limitations and uncertainties Sarah Collings Doctor of Philosophy University of York Biology September 2015 Abstract The Scotia Sea is a sub-region of the Southern Ocean with a unique biological operation, including high rates of primary production, high abundances of Antarctic krill, and a diverse community of land-breeding predators. Trophic interactions link all species in an ecosystem into a network known as the food web. Theoretical analyses of trophic food webs, which are parameterised using diet composition data, offer useful tools to explore food web structure and operation. However, limitations in diet data can cause uncertainty in subsequent food web analyses. Therefore, this thesis had two aims: (i) to provide ecological insight into the Scotia Sea food web using theoretical analyses; and (ii) to identify, explore and ameliorate for the effects of some data limitations on these analyses. Therefore, in Chapter 2, I collated a set of diet composition data for consumers in the Scotia Sea, and highlighted its strengths and limitations. In Chapters 3 and 4, I constructed food web analyses to draw ecological insight into the Scotia Sea food web. I indicated the robustness of these conclusions to some of the assumptions I used to construct them. Finally, in Chapter 5, I constructed a probabilistic model of a penguin encountering prey to investigate changes in trophic interactions caused by the spatial and temporal variability of their prey. I show that natural variabilities, such as the spatial aggregation of prey into swarms, can explain observed foraging outcomes for this predator.