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Monday, August 3, 2020 | History

2 edition of Aerial and ship-based surveys of steller sea lions (Eumetopias jubatus) in southeast Alaska, the Gulf of Alaska, and Aleutian Islands during June and July 1994 found in the catalog.

Aerial and ship-based surveys of steller sea lions (Eumetopias jubatus) in southeast Alaska, the Gulf of Alaska, and Aleutian Islands during June and July 1994

J. M. Strick

Aerial and ship-based surveys of steller sea lions (Eumetopias jubatus) in southeast Alaska, the Gulf of Alaska, and Aleutian Islands during June and July 1994

by J. M. Strick

  • 272 Want to read
  • 6 Currently reading

Published by U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center, Available through National Technical Information Service, U.S. Dept. of Commerce in Seattle, Wash, Springfield, Va .
Written in English

    Subjects:
  • Steller"s sea lion -- Counting -- Alaska -- Alaska, Gulf of -- Observations.,
  • Steller"s sea lion -- Counting -- Alaska -- Aleutian Islands -- Observations.,
  • Steller"s sea lion -- Alaska -- Alaska, Gulf of -- Geographical distribution -- Observations.,
  • Steller"s sea lion -- Alaska -- Aleutian Islands -- Geographical distribution -- Observations.

  • Edition Notes

    Statementby J.M. Strick, L.W. Fritz, and J.P. Lewis.
    SeriesNOAA technical memorandum NMFS-AFSC -- 71.
    ContributionsFritz, Lowell W., Lewis, J. P., Alaska Fisheries Science Center (U.S.)
    The Physical Object
    Paginationv, 55 p. :
    Number of Pages55
    ID Numbers
    Open LibraryOL15447430M

    The Steller sea lion (Eumetopias jubatus), also known as the Steller's sea lion and "northern sea lion", is a near-threatened species of sea lion in the northern is the sole member of the genus Eumetopias and the largest of the eared seals (Otariidae). Among pinnipeds, it is inferior in size only to the walrus and the two species of elephant : Otariidae. Key words: Steller sea lion, Eumetopias jubatus, pups, non-pups, Aiio Nuevo Island, vertical aerial photo counts, ground counts, replicate surveys, trends in abundance. Since the s, biologists have experimented with several techniques forcounting the number of Steller sea lions (Eumetopiasjubatus) occupying rooker-ies at Aiio Nuevo Island.

    Fritz L, Sweeney K, Johnson D, Lynn M, Gelatt T, Gilpatrick J. Aerial and ship-based surveys of Steller sea lions (Eumetopias jubatus) conducted in Alaska in June-July through , and an update on the status and trend of the western distinct population segment in Alaska. U. by: 7. STELLER SEA LION CENSLJS Fzgure 3. Enlarged area 12 (midsection) from a vertical aerial photograph taken from m ( ft). Pups are visible as the smallest, darkest animals. lion abundance that could be detected with four annual surveys of pups and non-pups. For these analyses we used the program TRENDS which performs.

    Fritz, L., K. Sweeney, D. Johnson, M. Lynn, T. Gelatt, and J. Gilpatrick. Aerial and Ship-Based Surveys of Steller Sea Lions (Eumetopias jubatus) Conducted in Alaska in June-July Through , and an Update on the Status and Trend of the Western Distinct Population Segment in Alaska. US Dep Commer, NOAA Tech Memo NMFS-AFSC, 91 p. () compared the use of medium format aerial photography surveys of Steller sea lions (Eumetopias jubatus) to other methods, such as land and ship-based surveys, and found many advantages to using still photography over the traditional methods. Krafft et al. () found the use of large format digitalFile Size: KB.


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Aerial and ship-based surveys of steller sea lions (Eumetopias jubatus) in southeast Alaska, the Gulf of Alaska, and Aleutian Islands during June and July 1994 by J. M. Strick Download PDF EPUB FB2

Aerial and ship-based surveys of Steller sea lions (Eumetopias jubatus) were conducted during June and July from Forrester Island in Southeast Alaska to Attu Island. (PDF) Aerial and Ship-based Surveys of Steller Sea Lions (Eumetopias jubatus) in Southeast Alaska, the Gulf of Alaska, and Aleutian Islands | Richard Merrick - is a platform for academics to share research papers.

PDF | On Jan 1,L. Fritz and others published Aerial, Ship and Land-Based Surveys of Steller Sea Lions (Eumetopias jubatus) in Alaska, June and July. Aerial and Ship-Based Surveys ofSteller Sea Lions (Eumetopias jubatus)Conducted in Alaska in June-July Throughand an Update on theStatus and Trend of the Western Distinct Population Segment in Alaska NOAA Technical Memorandum NMFS-AFSC Aerial and Ship-Based Surveys of Steller Sea Lions.

Aerial and ship-based surveys of Steller sea lions (Eumetopias jubatus) in southeast Alaska, the Gulf of Alaska, and Aleutian Islands during June and July / (Seattle, Wash.: U.S.

Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center ; Springfield, Va. Get this from a library. Aerial, ship, and land-based surveys of Steller sea lions (Eumetopias jubatus) in Alaska, June and July [Lowell.

Get this from a library. Aerial, ship, and land-based surveys of Steller sea lions (Eumetopias jubatus) in the western stock in Alaska, June and July and [Lowell W Fritz; C Stinchcomb; Alaska Fisheries Science Center (U.S.)]. Aerial and ship-based surveys to count Steller sea lion (Eumetopias jubatus) pups (~1 mo old) and non-pups (adults and juveniles) on land in Alaska were conducted by the National Marine Mammal Laboratory in June-July Aerial and ship-based surveys to count Steller sea lion (Eumetopias jubatus) pups and non-pups (adults and juveniles) on land in Alaska were conducted by the National Marine Mammal Laboratory in June-July Aerial, ship, and land-based surveys to count Steller sea lion (Eumetopias jubatus) pups (~1 mo old) and non-pups (adults and juveniles ≥ 1 year old) on terrestrial rookery and haulout sites in Alaska were conducted by the MML in June-July The manned aerial survey was conducted from 24 June to 8.

Steller Sea Lion Stellers are the largest of all sea lions and they have an appetite to match. These giant pinnipeds hunt fish, squid, octopus and, rarely, smaller seals.

Move the slider on the map to see the relative population changes between (left) and (right).The Steller sea lion ranges throughout the North Pacific species began to decline in abundance in the s and was listed as 'threatened' under the Endangered Species Act in InNOAA Fisheries recognized the species as two distinct stocks divided.

Aerial and Land-Based Surveys of Steller Sea Lions (Eumetopias jubatus) in Alaska, June and July and US Department of Commerce, NOAA Technical Memorandum NMFS-AFSC US Department of Commerce, NOAA Technical Memorandum NMFS-AFSCCited by: Aerial and ship-based surveys of Steller sea lions (Eumetopias jubatus) conducted in Alaska in June-July throughand an update on the status and trend of the western distinct population segment in Alaska.

Aerial, ship, and land-based surveys of Steller sea lions (Eumetopias jubatus) in Alaska, June and July and NOAA Technical Memorandum. NMFS-AFSC Holmes, E.E., L.W. Fritz, A.E. York, and K. Sweeney. Age-structure modeling reveals long-term decline in the natality of western Steller sea lions.

Ecological Applications Aerial and ship-based surveys to count Steller sea lion (Eumetopias jubatus) pups and non-pups (adults and juveniles) on land in Alaska were conducted by the National Marine Mammal Laboratory in June-July The aerial photographic survey was conducted from 22 June to 9 July, and targeted all.

The National Marine Fisheries Service (NMFS) conducted aerial, land, and ship-based surveys of Steller sea lions (Eumetopias jubatus) in Alaska during June and July, an. Aerial and ship-based surveys of Steller sea lions (Eumetopias jubatus) conducted in Alaska in June-July throughand an update on the status and trend of the western distinct population segment in Alaska.

U.S. Dep. Commer., NOAA Tech. Memo. NMFSAFSC, 91 p. Simultaneously, traditional aerial surveys were conducted east of the Delarof Islands (n = ). This combined approach enabled us to conduct the most complete survey of adult, juvenile, and newborn Steller sea lions in the Aleutian Islands since the by: Aerial and ship-based surveys of Steller sea lions (Eumetopias jubatus) conducted in Alaska in June-July throughand an update on the status and trend of the western stock in Alaska.

U.S. Dept. of Commer. NOAA Tech. Memo. NMFS-AFSCCited by:. Fritz L, Sweeney K, Towell R, Gelatt T. Aerial and ship-based surveys of Steller sea lions (Eumetopias jubatus) conducted in Alaska in June-July throughand an update on the status and trend of the western distinct population segment in Alaska.

U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC 5. Kenyon KW, Rice : Carey E. Kuhn, Kathryn Chumbley, Lowell Fritz, Devin Johnson.ABSTRACT: We hypothesized that: (1) Steller sea lion Eumetopias jubatus diet choice is a function of prey availability, (2) sea lions move to take advantage of times and locations of seasonal prey concentrations and (3) the number present depends on the amount of prey available (numerical response).

Over 3 yr, typically on a quarterly basis, in Frederick Sound, Cited by: 16 Chapter 2. Effect of UAS on Steller Sea Lion Takes The use of UAS as a survey platform is novel.

Potentially adverse effects of employing UAS for. population surveys are similar to those of manned aircraft, which have occasionally .