Making Waves
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Monk Seals in Post-Classical History
Monk Seals in Post-Classical History The role of the Mediterranean monk seal (Monachus monachus) in European history and culture, from the fall of Rome to the 20th century William M. Johnson Mededelingen No. 39 2004 NEDERLANDSCHE COMMISSIE VOOR INTERNATIONALE NATUURBESCHERMING Mededelingen No. 39 i NEDERLANDSCHE COMMISSIE VOOR INTERNATIONALE NATUURBESCHERMING Netherlands Commission for International Nature Protection Secretariaat: Dr. H.P. Nooteboom National Herbarium of the Netherlands Rijksuniversiteit Leiden Einsteinweg 2 Postbus 9514, 2300 RA Leiden Mededelingen No. 39, 2004 Editor: Dr. H.P. Nooteboom PDF edition 2008: Matthias Schnellmann Copyright © 2004 by William M. Johnson ii MONK SEALS IN POST-CLASSICAL HISTORY The role of the Mediterranean monk seal (Monachus monachus) in European history and culture, from the fall of Rome to the 20th century by William M. Johnson Editor, The Monachus Guardian www.monachus-guardian.org email: [email protected] iii iv TABLE OF CONTENTS MONK SEALS IN POST-CLASSICAL HISTORY ......................................................III ABSTRACT ......................................................................................................................... VII ACKNOWLEDGEMENTS ........................................................................................................ VII MONK SEALS IN POST-CLASSICAL HISTORY ..............................................................................1 AN INTRODUCTION TO THE SPECIES ......................................................................1 -
Marine Mammals of Hudson Strait the Following Marine Mammals Are Common to Hudson Strait, However, Other Species May Also Be Seen
Marine Mammals of Hudson Strait The following marine mammals are common to Hudson Strait, however, other species may also be seen. It’s possible for marine mammals to venture outside of their common habitats and may be seen elsewhere. Bowhead Whale Length: 13-19 m Appearance: Stocky, with large head. Blue-black body with white markings on the chin, belly and just forward of the tail. No dorsal fin or ridge. Two blow holes, no teeth, has baleen. Behaviour: Blow is V-shaped and bushy, reaching 6 m in height. Often alone but sometimes in groups of 2-10. Habitat: Leads and cracks in pack ice during winter and in open water during summer. Status: Special concern Beluga Whale Length: 4-5 m Appearance: Adults are almost entirely white with a tough dorsal ridge and no dorsal fin. Young are grey. Behaviour: Blow is low and hardly visible. Not much of the body is visible out of the water. Found in small groups, but sometimes hundreds to thousands during annual migrations. Habitat: Found in open water year-round. Prefer shallow coastal water during summer and water near pack ice in winter. Killer Whale Status: Endangered Length: 8-9 m Appearance: Black body with white throat, belly and underside and white spot behind eye. Triangular dorsal fin in the middle of the back. Male dorsal fin can be up to 2 m in high. Behaviour: Blow is tall and column shaped; approximately 4 m in height. Narwhal Typically form groups of 2-25. Length: 4-5 m Habitat: Coastal water and open seas, often in water less than 200 m depth. -
56. Otariidae and Phocidae
FAUNA of AUSTRALIA 56. OTARIIDAE AND PHOCIDAE JUDITH E. KING 1 Australian Sea-lion–Neophoca cinerea [G. Ross] Southern Elephant Seal–Mirounga leonina [G. Ross] Ross Seal, with pup–Ommatophoca rossii [J. Libke] Australian Sea-lion–Neophoca cinerea [G. Ross] Weddell Seal–Leptonychotes weddellii [P. Shaughnessy] New Zealand Fur-seal–Arctocephalus forsteri [G. Ross] Crab-eater Seal–Lobodon carcinophagus [P. Shaughnessy] 56. OTARIIDAE AND PHOCIDAE DEFINITION AND GENERAL DESCRIPTION Pinnipeds are aquatic carnivores. They differ from other mammals in their streamlined shape, reduction of pinnae and adaptation of both fore and hind feet to form flippers. In the skull, the orbits are enlarged, the lacrimal bones are absent or indistinct and there are never more than three upper and two lower incisors. The cheek teeth are nearly homodont and some conditions of the ear that are very distinctive (Repenning 1972). Both superfamilies of pinnipeds, Phocoidea and Otarioidea, are represented in Australian waters by a number of species (Table 56.1). The various superfamilies and families may be distinguished by important and/or easily observed characters (Table 56.2). King (1983b) provided more detailed lists and references. These and other differences between the above two groups are not regarded as being of great significance, especially as an undoubted fur seal (Australian Fur-seal Arctocephalus pusillus) is as big as some of the sea lions and has some characters of the skull, teeth and behaviour which are rather more like sea lions (Repenning, Peterson & Hubbs 1971; Warneke & Shaughnessy 1985). The Phocoidea includes the single Family Phocidae – the ‘true seals’, distinguished from the Otariidae by the absence of a pinna and by the position of the hind flippers (Fig. -
UPDATE MARINE MAMMALS Circumpolar Marine Mammal Expert Group, CBMP-Marine
State of the Arctic Marine Biodiversity Report UPDATE MARINE MAMMALS Circumpolar Marine Mammal Expert Group, CBMP-Marine 2021 Polar bear with northern lights, Canada. Photo credit: Ondrej Prosicky/Shutterstock.com In 2017, the State of the Arctic Marine Biodiversity Report (SAMBR) synthesized data about biodiversity in Arctic marine ecosystems around the circumpolar Arctic. SAMBR highlighted observed changes The Circumpolar Biodiversity and relevant monitoring gaps. This document provides an update on Monitoring Program (CBMP) is the status of marine mammals in the circumpolar Arctic from 2015– an adaptive monitoring 2020 (scientific references for factual information and a more detailed program based on an version of the text herein can be found in Kovacs et al. 2021). international network of scientists, government Arctic endemic marine mammals are one focal group of the Circumpolar agencies, Indigenous Biodiversity Monitoring Program’s (CBMP) Arctic Marine Biodiversity organizations and conservation Monitoring Plan (CBMP-Marine Plan), along with sea ice biota, plankton, groups working together to benthos, marine fishes and seabirds. Networks of experts have harmonize and integrate efforts identified key elements, called Focal Ecosystem Components (FECs), to monitor the Arctic’s living within the Arctic marine ecosystem. Changes in the status of FECs resources. The CBMP organizes indicate changes in the broader marine environment. its efforts around the major This update was prepared by the Marine Mammals Expert Network, ecosystems of the Arctic: which works to coordinate monitoring and report scientific findings marine, freshwater, terrestrial regarding trends and their drivers in marine mammal populations and coastal. around the Arctic. In 2011, the CBMP Marine Expert Monitoring Group BACKGROUND published a circumpolar monitoring plan that describes Arctic endemic marine mammals live in close association with sea how Arctic states will compile, ice. -
On Predatory Habits of Atlantic Walrus
lULl.. ~~C'(fh"-<Y.~~\J Stlll~~JW&'VLt.:..l' Olf' PREDATORY HABITS OF ATLANTIC WALRUS c-n p~ ~~ ~ .J IU.K.Timoshenko (SevPINRO), L.A.Popov (VNIRO) n{)AltMti_ jIO.-~ W.JJ\.W'1 -~) WI Predators are known to exist among walruses. There is n~~o~~~O;> ~p tion in literature,however, on any direct observation on the attack I of walruses on other warm-blooded animals, except for the case repor- ted by Pedersen (Pedersen,I962). roo the data available are of particUlar interest. The observations were made on board vessels,helicopters and on ice in the White Sea in the sealing season of the harp seal. Here some examples will be given. ~ young walrus was encountered on the ice in the Nack of the White ~ea at a distance of 34 km west of the Village of Nizhnyaya Zolotitsa on March 4,1983. ~eeing pea.ple it crept down into water. The ice floe was stained with blood. Many traces found on the· snow covering the ice floe evidenced the predator's movements. Some fragments of a white-coat harp seal,e.g. head and fore flippers, were found. A similar caRe when a walrus attacked a harp seal was recorded in March 1976 (Popov,Nazarenko,I977). At that time the observation made on board a helicopter registered a fact that a young male at the age 3 or 4 years emerged from water and trod on a pup of harp seal who stayed on the ice floe without its mother, and disappeared with the pup in water. -
Electrophoretic Variation in Large Mammals. III. the Ringed Seal, Pusa-Hispida, the Harp Seal, Pagophilus-Groenlandicus, and the Hooded Seal, Cystophora-Cristata
University of Montana ScholarWorks at University of Montana Biological Sciences Faculty Publications Biological Sciences 1982 Electrophoretic Variation in Large Mammals. III. The Ringed Seal, Pusa-Hispida, the Harp Seal, Pagophilus-Groenlandicus, and the Hooded Seal, Cystophora-Cristata V. Simonsen Fred W. Allendorf University of Montana - Missoula, [email protected] W. F. Eanes F. O. Kapel Follow this and additional works at: https://scholarworks.umt.edu/biosci_pubs Part of the Biology Commons Let us know how access to this document benefits ou.y Recommended Citation Simonsen, V.; Allendorf, Fred W.; Eanes, W. F.; and Kapel, F. O., "Electrophoretic Variation in Large Mammals. III. The Ringed Seal, Pusa-Hispida, the Harp Seal, Pagophilus-Groenlandicus, and the Hooded Seal, Cystophora-Cristata" (1982). Biological Sciences Faculty Publications. 63. https://scholarworks.umt.edu/biosci_pubs/63 This Article is brought to you for free and open access by the Biological Sciences at ScholarWorks at University of Montana. It has been accepted for inclusion in Biological Sciences Faculty Publications by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. Hereditas 97: 87-90 (1982) Electrophoretic variation in large mammals 111. The ringed seal, Pusa hispida, the harp seal, Pagophilus groenlandicus, and the hooded seal, Cystophora cristata. V. SIMONSEN', F. W. ALLENDORF, W. F. EANES3 and F. 0. KAPEL4 ' Institute of Ecology and Genetics, University of Aarhus, Denmark Department of Zoology, University of Montana, USA ' Department of Ecology and Evolution, State University of New York, Stony Brook, USA Greenland Fisheries Investigations, Charlottenlund, Denmark SIMONSEN, V., ALLENDORF, F. W.,EANES, W. -
SEAL FISHERY " "Seal" Means Any Eared Seal Or Hair (Or True) Seal Other Than a Leopard Seal, Including a Fur Seal
SEAL FISHERY " "Seal" means any Eared Seal or Hair (or True) Seal other than a Leopard Seal, including a Fur Seal, a Sea Lion, an Elephant Seal other animal of the seal kind that may visit the Colony or the Depend and shall be deemed to include a Sea Order. " "Seal reserve" means any portion of land or water within the limits of the Colony set apart by the Governor in Council for the breeding l'ou er to (2) In tlie c.nsc of tl:tl 1)rc~ncliby the holder of a licence revokc . ~iccllccx2, of ;~I:J: of t11e 13rol-!C.l(-~nsof t lii~Ordinance or of thc. rcgula- tion.; rna tlc t lic'~.~'.c~i~:!c.~.,01- of ;111~- of tlie conili tions nndcr \\.l~icl~51ic-11 llcis:~c.t I?I;~\-. :\.L\A.i)~ll,n ;:rnntecl, .tli0 (;tj[.(>~llo!. i11;1\.,l)!. no ic:cb ;!l \\.l-i t I:I~.,-II:!~II!:LI.~~\. rt.1-oke ::ucli licc:ncc, :LII(I t lic~~.~~~p,)]I :L! ri l,1.\.,. (, )-i'r~-i-#~!.A tllc~rcl)y or (>r~jc~;c>cltl~~sc- under sllall ((.;.S(. as from tllc ch:c mcntio:ied in sicil notice. ~<cguljt~onz. 6. (1) Thc (;ox-ernor in Council may malie rc.guln!ions for carr~in~zout tli~~)so\-i.-.ion~ nf this Ordinancc and tl-tc intent and ol2ject i i~~rc'of. (2) An! I;c~'c,~guiity of ;m off-fence against any pro- \-ision of tl:c r..gi~!ation.; r-nn:i(. -
Morphometric Measurements and Body Condition of Healthy and Starveling Steller Sea Lion Pups (Eumetopias Jubatus)
Aquatic Mammals 2000, 26.2, 151–157 Morphometric measurements and body condition of healthy and starveling Steller sea lion pups (Eumetopias jubatus) Andrew W. Trites1* and Remco A. H. Jonker1,2 1Marine Mammal Research Unit, Fisheries Centre, University of British Columbia, 2204 Main Mall, Vancouver, BC, Canada V6T 1Z4 2Faculty of Veterinary Medicine, University of Utrecht, Utrecht, The Netherlands Abstract Introduction The thickness and weight of skin, blubber, and There is considerable interest in applying simple body core were measured from 12 dead Steller sea methods to assess the general health of individual lion pups (Eumetopias jubatus). These necropsied marine mammals. In the case of pinnipeds, there are pups represented a wide range of body sizes and generally two approaches. The first measures the conditions (small to large, and fat to no-fat), and thickness of the blubber layer or the amount of were chosen to compare the relative body con- body fat, and is premised on the idea that a fat ditions of healthy and starved pups. Seven of the animal is healthy (e.g., Gales & Burton, 1987; Ryg pups lacked blubber and were significantly lighter et al., 1990a; Castellini et al., 1993, Renouf et al., for a given length compared to the five that had 1993; Gales et al., 1994; Arnould, 1995; Jonker & fat at their time of death. Volume exceeded mass Trites, unpublished data). The second approach by a factor of 1.3% with density averaging uses a standardized growth curve to determine how 0.987 g cm"3. Skin and blubber were not uniformly heavy an individual should be, based on its thick over the body surface. -
Remarks on Eskimo Sealing and the Harp Seal Controversy
SHORT PAPERS,NOTES, AND INSTITUTE NEWS 267 Remarks on Eskimo Sealing and usually much less than that earned from terrestrial animals such as the fox, land otter, and the Harp Seal Controversy muskrat, wolf, wolverine, or polar bear. Beginning in about 1962, advanced tech- Mostinhabitants of the North today are niquesin the preparation of hair-seal pelts employed full time or part time in the har- and the increased use of sealskins in cloth- vesting of biological resources. Until World ing, especially in Europe, combined to create War 11, earnings fromthe production of a rapidlyexpanding market for skins from renewable resourcesin nearly every major all seal species. For the first time, the ringed region of the circumpolar North exceeded seal, or jar, of the far north reached market incomes from nonrenewable-resource based values which made Eskimoseal hunting industries. In general,the most important highly lucrative. For example,in eastern producers have been the commercial fisheries BaRn Island,young ringed sealssold for of subarctic waters, followed by furs of wild $4.00 per skin in 1955 and $17.50 in 1963. and domesticated land mammals, again pre- Mature ringed seals increased in value from dominately from subarcticareas. Since the $1.50 to $12.25 during the same period. Ex- heyday of European and American northern ceptionally good skins often sold for well hunting in the eighteenth and nineteenth cen- over $20.00 in Alaska andCanada during turies, however, the economic importance of 1963 and 1964. Average sealskin prices in marine mammals has often been highly un- Greenland, carefully controlled by the gov- derrated. -
Navigating the Monk Seal Maze
Vol. 1 / No. 2 Published by IMMA Inc. December 1998 Editorial: Navigating the Monk Seal Maze – A Guide for the Layperson Bowing to popular demand, The Monachus Guardian presents yet another satirical view of monk seal conservation. This time, we travel to Northern Greece for a United Nations Environment Programme conference in the Byzantine city of Arta… International News Regional News Cover Story: Midway’s Monk Seals Editorial: Navigating the Monk Seal Maze When attempts were made to forcibly reintroduce Hawaiian monk seals to a former breeding site at Midway Atoll, all 18 translocated animals either died or disappeared in short order. More recently, a drastic reduction in human disturbance, coinciding with the closure of Midway’s Naval Base, has encouraged monk seals to recolonise the atoll of their own accord. But with ecotourism now developing on Midway, will this success story prove short-lived? In Focus: New Discoveries in Cilicia Researchers discover a hitherto unknown population of Mediterranean Monk Seals along Turkey’s Mediterranean Coast… Perspectives: The Life & Times of Q39 A diary of events surrounding the persecution of a yearling Hawaiian monk seal on Maui… Monachus Science: Antolovic, J. Mediterranean monk seal (Monachus monachus) habitat in Vis Archipelago, the Adriatic Midway’s Monk Seals Sea. Lavigne, D.M. Historical biogeography and phylogenetic relationships among modern monk seals, Monachus spp. Neves, H.C. & R. Pires. The recuperation of a monk seal pup, Monachus monachus, in the Ilhas Desertas – the conditions for its success. Letters to the Editor Recent Publications Conservation on the Desertas Islands Publishing Info Copyright © 1998 The Monachus Guardian. -
Tracing Early Stages of Species Differentiation: Ecological
BMC Evolutionary Biology BioMed Central Research article Open Access Tracing early stages of species differentiation: Ecological, morphological and genetic divergence of Galápagos sea lion populations Jochen BW Wolf*1,2,6, Chris Harrod2,3, Sylvia Brunner4, Sandie Salazar5, Fritz Trillmich6 and Diethard Tautz1,2 Address: 1Institute for Genetics, Evolutionary Genetics, University of Köln, 50674 Köln, Germany, 2Max-Planck Institute for Evolutionary Biology, Evolutionary Genetics, 24306 Plön, Germany, 3Ecology and Evolutionary Biology, School of Biological Sciences, Queen's University Belfast, 97 Lisburn Road, BT9 7BL, UK, 4Museum of the North, University Alaska, 907 Yukon Drive, Fairbanks, AK 99775, USA, 5Estación Científica Charles Darwin, Puerto Ayora, Galápagos, Ecuador and 6Department of Animal Behaviour, University of Bielefeld, PO Box 10 01 31, 33501 Bielefeld, Germany Email: Jochen BW Wolf* - [email protected]; Chris Harrod - [email protected]; Sylvia Brunner - [email protected]; Sandie Salazar - [email protected]; Fritz Trillmich - [email protected]; Diethard Tautz - [email protected] * Corresponding author Published: 16 May 2008 Received: 22 November 2007 Accepted: 16 May 2008 BMC Evolutionary Biology 2008, 8:150 doi:10.1186/1471-2148-8-150 This article is available from: http://www.biomedcentral.com/1471-2148/8/150 © 2008 Wolf et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: Oceans are high gene flow environments that are traditionally believed to hamper the build-up of genetic divergence. -
Seals and Sea Lions of California Marin and Sonoma Images By
Seals and Sea Lions of California Marin and Sonoma Images by Jamie Hall and Suki Waters Six Species Represent two of the three families of pinnipeds (Latin fin or feather, foot) Eared seals True seals Walrus 50,000 years ago Six species out of the total of 34 Three of the species vanished since 1900 and then reappeared Eared Seals-- Otariids Fur seals Sea lions Walk on land Large foreflipper Small external ears True Seals -- Phocids Hump along on land Hindflippers wave in water Ear holes True Seals Ear holes are hard to see, especially on harbor seals Eared Seal Family Fur Seals Fur Seals Two species in California Now relatively rare Were once common in California Became extirpated Populations growing after decades of absence Guadalupe Fur Seal Bull and Female Guadualupe Guadalupe Fur Seal Pup Guadalupe Fur Seal Male Female – 6 to 8 ft – 4 to 5 ft – 375 pounds – 110 pounds – 13 Years – 23 Years Newborn 2 ft 9 lb Guadalupe Notes Now possible to find a Guadalupe ashore Look for that very pointed nose Juveniles may be hard to tell from California sea lions 3 rescued patients at MMC in January IUCN Near Threatened Northern Fur Seal Northern Fur Seal Family Northern Fur Seal Pup Northern Fur Seal Males Females – 5 to 7 ft – 4.5 to 5 ft – 400 to 600 lb – 90 to 110 lb – 18 to 20 years – 18 to 20 years Newborn – 2 ft – 60 lb Northern Fur Seals Return To Central/Northern California Farallon fur seals lost by 1840 Were seen at sea Then first birth in 1996 on the Farallones In 2011, at least 180 pups born Common Pinnipeds