2 edition of Detection of sea otters in boat-based surveys of Prince William Sound, Alaska found in the catalog.
Detection of sea otters in boat-based surveys of Prince William Sound, Alaska
Mark S. Udevitz
|Other titles||Exxon Valdez oil spill state/federal natural resource damage assessment final report|
|Statement||Mark S. Udevitz, James L. Bodkin, Daniel P. Costa.|
|Series||Marine mammal study -- 6-19|
|Contributions||Bodkin, James L., Costa, Daniel P. 1952-, U.S. Fish and Wildlife Service.|
|LC Classifications||QL737.C25 U34 1995|
|The Physical Object|
|Pagination||iv, 13 p. :|
|Number of Pages||13|
|LC Control Number||2009438435|
Sea otters in Prince William Sound. Alaska, were spatially segregated into predominantly (97%) male areas at the front of the expanding population and breeding areas with fewer (up to 33%) males. The sea otter (Enhydra lutris) is a marine mammal native to the coasts of the northern and eastern North Pacific sea otters typically weigh between 14 and 45 kg (31 and 99 lb), making them the heaviest members of the weasel family, but among the smallest marine most marine mammals, the sea otter's primary form of insulation is an exceptionally thick coat of fur, the.
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Boat‐based surveys have been commonly used to monitor sea otter populations, but there has been little quantitative work to evaluate detection biases that may affect these surveys. We used ground‐based observers to investigate sea otter detection probabilities in a boat‐based survey of Prince William Sound, by: Detection of sea otters in boat-based surveys of Prince William Sound, Alaska (Marine mammal study) [Mark S Udevitz] on *FREE* shipping on qualifying offers.
Boat-based surveys have been commonly used to monitor sea otter populations, but there has been little quantitative work to evaluate detection biases that may affect these surveys. We used ground-based observers to investigate sea otter detection probabilities in a boat-based survey of Prince William Sound, by: Boat-based surveys were used to monitor the Prince William Sound sea otter population before and after the Exxon Valdez oil spill.
Population and loss estimates could be obtained from these surveys by direct expansion from the counts in the surveyed transects under the assumption that all otters in those transects were observed. Get this from a library. Detection of sea otters in boat-based surveys of Prince William Sound, Alaska.
[Mark S Udevitz; James L Bodkin; Daniel P Costa; Exxon Valdez Oil Spill Trustee Council,; Exxon Valdez Oil Spill State/Federal Natural Resource Damage Assessment.; Alaska Fish and Wildlife Research Center (U.S.); University of California, Santa Cruz.
DETECTION OF SEA OTTERS IN BOAT-BASED SURVEYS OF PRINCE WILLIAM SOUND, ALASKA. Detection of Sea Otters in Boat-Based Surveys of Prince William Sound, Alaska. Detection of Sea Otters in Boat-based Surveys of Prince William Sound, Alaska Marine Mammal Study Final Report Studv History: Marine Mammal Study 6 ("6), titled Assessment of the Magnitude, Extent and Duration of Oil Spill Impacts on Sea Otter Popularions in Alaska, was initiated in as part of the Natural Resource Damage Assessment (NRDA).
OLYMPIA, Wash., Feb 28 (Reuters) - Nearly 25 years after the Exxon Valdez oil spill off the southern coast of Alaska, sea otters in the most affected parts of Prince William Sound have recovered to their pre-spill numbers, a federal report released on Friday showed.
Download this stock image: View of Sea Otters floating in Prince William Sound, Alaska, Southcentral, Fall - BTDAR7 from Alamy's library of millions of high resolution stock photos, illustrations and vectors.
25 Years After the Exxon Valdez, Sea Otter Population at Pre-Spill Levels. by USGS Press Release | | sea otters. ANCHORAGE— Nearly 25 years after the Exxon Valdez oil spill injured wildlife off the coast of Alaska, a new report issued today by the U.S.
Geological Survey indicates that sea otters have returned to pre-spill numbers within the most heavily oiled areas of Prince.
Marine Mammals and the Exxon Valdez. Book • Edited by: Thomas R. Loughlin. Browse book content. Boat-Based Population Surveys of Sea Otters in Prince William Sound. Book chapter Full text access. Chapter 4 - Boat-Based Population Surveys of Sea Otters in Prince William Sound.
Douglas M. Burn. Pages Select Chapter 5 - An. About the Species. The sea otter is the largest member of the weasel family and the smallest marine mammal. Ninety percent of the world’s sea otters live in coastal Alaska. The Marine Mammal Protection Act protects sea otters.
It prohibits commercial harvest of sea otters, and Alaska book Alaska natives to hunt sea otters for subsistence and creation of handicrafts. total immediate loss to the sea otter population in Prince William Sound (PWS) was a comparison of estimates of sea otter abundance based on boat surveys conducted before and after the spill (Garrott et al.
Boat surveys were used after the spill to estimate sea. Territory quality of male sea otters in Prince William Sound, Alaska: relation to body and territory maintenance behaviors Heidi C.
Pearson, Jane M. Packard, and Randall W. Davis Abstract: Based on optimality models, lekking males holding higher quality territories should spend more effort on terri-tory maintenance and less effort on body.
We assessed whether sea otters and harlequin ducks in an area of western Prince William Sound, Alaska, USA (PWS), oiled by the Exxon Valdez oil spill (EVOS), are exposed to polycyclic aromatic hydrocarbons (PAH) from oil residues 20 years after the spill.
Spilled oil has persisted in PWS for two decades as surface oil residues (SOR) and subsurface oil residues (SSOR) on the shore. Sea otter female and pup activity budgets, Prince William Sound, Alaska - Volume 91 Issue 4 - Sylvia K. Osterrieder, Randall W.
Davis. Boat-based population surveys of sea otters (Enhydra lutris) in Prince William Sound, Alaska, following the Exxon Valdez oil spill [Douglas M. U.S. Fish and Wildlife Service. Burn] on *FREE* shipping on qualifying : Douglas M. U.S. Fish and Wildlife Service.
Burn. Detection of Sea Otters in Boat-Based Surveys of Prince William Sound, Alaska. Marine Mammal Sci. [Natl. Biol. Survey, Alaska Sci Ctr, E Tudor Road, Anchorage, AKUSA.]. DETECTION OF SEA OTTERS IN BOAT-BASED SURVEYS OF PRINCE WILLIAM SOUND, ALASKA (pages 59–71).
Mark S. Udevitz, James L. Bodkin and Daniel P. Costa. Article first published online: 26 AUG | DOI: /jtbx. Synthesis of Nearshore Recovery following the Exxon Valdez Oil Spill: Sea Otter Liver Pathology and Survival in Western Prince William Sound, –, Exxon Valdez Oil Spill Restoration Project Final Report (Restoration Projects and a).
U.S. Geological Survey, Alaska Science Center, Anchorage, AK. February Buy Detection of sea otters in boat-based surveys of Prince William Sound, Alaska (Marine mammal study) by Mark S Udevitz (ISBN:) from Amazon's Book Store.
Everyday low prices and free delivery on Author: Mark S Udevitz. As a consequence of the Exxon Valdez oil spill in PWS, Alaska, frequent surveys of sea otter abundance have been conducted to estimate both acute and chronic effects of the spill and the process of recovery over the past two decades (Bodkin et al.,Bodkin et al., ).
Title: Detection of Sea Otters in Boat-Based Surveys of Prince William Sound, AK. Project Year and Number: MM Other Fiscal Years and Numbers for this Project: None Principal Investigator (PI): Mark Udevitz, DOI. Sea otters live in shallow water areas along the shores of the North Pacific.
Most of the sea otter habitat in Alaska has now been repopulated although populations in Southwest declined sharply in the s. Viewing. Sea otters usually swim or float on their backs while grooming, resting, or eating. Abundance estimation covers the range of techniques by which the size of a population of marine mammals can be estimated.
for shipboard surveys, detection distances r and detection angles Costa ion of sea otters in boat-based surveys of Prince William Sound, Alaska. Mar. Mamm. Sci., 11 (), pp. Google Scholar. White. Lazy Otter Charters: On the Best of Prince William Sound Tour, Capt.
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As if in answer, between andotters from Amchitka Island and Prince William Sound were translocated to sites in Southeast Alaska.
Insea otters were further protected under the U.S. Marine Mammal Protection Act. Today, the region’s sea otter population is estimated at a heal otters. Aerial surveys are conducted in order to calculate sea otter abundance.
Surveys were flown in Katmai National Park and Preserve in, and ; Kenai Fjords National Park in,and ; and western Prince William Sound annually from, andand Sea otters and kelp forests in Alaska.
In tests of our method using shore-based observers, we estimated detection probabilities of in standard strip-transects and in intensive searches. We used the survey method in Prince William Sound, Alaska to estimate a sea otter population size of 9, (SE = ).
The new method represents an improvement. In Alaska, sea otter populations in Southcentral and Southeast Alaska have stabilized or are continuing to increase. However, in southwest Alaska, sea otters have experienced a sharp population decline in the last 20 years. Threats. Threats to sea otters include predation, overharvest, fishery interactions, disease, and oil spill.
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Additional authors on t.p.: Angie K. Ambourn, Fabian Keirn, Alison E. Arians. Sea otters resting in Barry Arm, Prince William Sound, Alaska, typical of groups observed during aerial surveys in Southeast Alaska.
(Photograph courtesy of Jennifer Coffey, private citizen, J ). Sound, Alaska, –, based on aerial survey methods of Bodkin and Sea otters in western Prince William Sound (WPWS) and each ISU are not included in calculating detection. To increase precision in estimates for the intensive oiled (northern Knight.
In Southeast Alaska, USA, sea otter populations increased from fewer than animals translocated from Amchitka Island and Prince William Sound in the late s (Jameson et al. ) to. Alaska's premier fly-in fishing lodge offers self-guided salmon and halibut fishing, comfortable accommodations, great food, and a true Alaskan experience.
Alaska's Fly-in Fishing Lodge – Alaska Sea Otter Sound Lodge. of carrying capacity for sea otters in Washington State. Wildlife Society Bulletin UDEVITZ MS, BODKIN JL, COSTA DP. Detection of sea otters in boat-based surveys of Prince Wil- liam Sound, Alaska. Marine Mammal Science US Fish and Wildlife Service, Marine Mammals Management Office, East Tudor Road, An.
Stanford Libraries' official online search tool for books, media, journals, databases, government documents and more. The sea otter, Enhydra lutris, is the smallest species of marine mammal. Sea otters occur primarily in shallow, nearshore marine habitats (Rotterman and Simon-Jackson ).
They eat a wide variety of benthic (i.e., bottom dwelling) invertebrates, including bivalves, molluscs, gastropods, crustaceans, echinoderms, and occasionally octopus and fish.
releaseoftheseimplantedotters(n=21),theyweremoremobilethanwild-caughtand releasedseaottersstudiedin PWS, fromthrough All were .Or you can cruise deep into the heart of Prince William Sound looking for humpback and killer whales—as well as seeing Dalls porpoise, large rafts of sea otters, and rookeries of fascinating sea birds.
There’s also room for beach combing, hiking or tidepooling, and capped off with a .However, these sea otters still face challenges. Inan Exxon-Valdez oil tanker struck a shallow reef in the Prince William Sound, killing nearly 4, sea otters in the ensuing oil spill.
Since then, studies have shown that the sea otter population and parts of the nearshore ecosystem are only slowly recovering from that disaster.