Download or read book Circumpolar Ringed Seal Pusa Hispida Monitoring written by Conservation of Arctic Flora and Fauna and published by . This book was released on 2013 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ringed Seal Monitoring written by Alaska. Department of Fish and Game and published by . This book was released on 1987 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ringed Seal Monitoring written by Kathryn J. Frost and published by . This book was released on 1985 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monitoring Distribution and Abundance of Ringed Seals in Northern Alaska written by Kathryn J. Frost and published by . This book was released on 2002 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes results of aerial surveys conducted to determine the distribution and abundance of ringed seals (Phoca hispida) in the central Beaufort Sea off Alaska ... Specific objectives were to: 1) review and refine protocols for monitoring ringed seals by aerial surveys; 2) estimate relative abundance and density of ringed seals on fast ice in the Beaufort Sea during 1996-1999 and compare with data collected during 1985-1987; and 3) correlate observed ringed seal densities on fast ice with environmental parameters."--Page vi.

Download or read book Background Document for Development of a Circumpolar Ringed Seal Phoca Hispida Monitoring Plan written by Kit M. Kovacs and published by . This book was released on 2007 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monitoring of Ringed Seals During Construction of Ice Roads for BP s Northstar Oil Development Alaskan Beaufort Sea 1990 written by William John Richardson and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Introduction. BP Exploration (Alaska) Inc. (BP) plans to produce crude oils from the Northstar Unit, which is located between 2 and 8 miles (3.2 and 12.9 kilometers) offshore from Point Storkersen, just northwest of Prudhoe Bay. The Northstar island is to built on the remnants of Seal Island, an artificial island constructed in 1982, used for exploration drilling during the 1980s and subsequently abandoned. ... In August 1998, BP submitted to the National Marine Fisheries Service (NMFS) an application for an Incidental Harassment Authorization (IHA) to authorize potential unintentional non-lethal "takes" of whales and seals during Northstar construction activities from December 1998 through to December 1999. Monitoring is one of the requirements of an IHA. BP's Application included an outline of the marine mammal and acoustical monitoring work proposed by BP. Four monitoring tasks were planned during the winter-spring period: 1. continue a "Before-After/Control-Impact (BACI)" study on ringed seal distribution and abundance, as documented by fixed-wing aerial surveys during spring ...; 2. conduct on-ice searches for ringed seal lairs in areas where construction activities were initiated after 20 March 1999, the approximate onset of the ringed seal pupping period; 3. conduct a late winter helicopter survey and assessment of abandonment rates for seal holes; and 4. conduct acoustic and vibration measurements to document levels, characteristics, and transmission of sounds created by gravel hauling and new ice-road construction. ... Ice Road Construction, 1999. Two ice roads were built between early January and early April 1999. The main ice road was built from the Kuparuk River gravel mine site to Seal Island. An alternate road was built parallel to and west of the northern portion of the main road, starting at a planned gravel reload area ~7 km (4.3 mi) southwest of Seal Island and extending northeast to Seal Island. ... Searches for ringed seal breathing holes and lairs ... were conducted in all areas of planned construction where water depths were greater than 1.5 m (5 ft). No construction activities began until the on-ice surveys confirmed the absence of ringed seal breathing holes of lairs in the planned construction areas and a 152 m (500 ft) buffer zone on each side"--ASTIS database.

Download or read book Monitoring Distribution and Abundance of Ringed Seals in Northern Alaska written by Kathryn J. Frost and published by . This book was released on 1999 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monitoring Distribution and Abundance of Ringed Seals in Northern Alaska written by United States. Minerals Management Service. Alaska OCS Region and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Harvest based Monitoring of Ringed Seal Body Condition and Reproduction in Amundsen Gulf NT Canada 2004 2007 written by Lois A. Harwood and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A report based on four seasons of sampling harvested seals from Sachs Harbour and Ulukhaktok on the shores of Amundsen Gulf in the Northwest Territories, Canada.

Download or read book Biology of the Ringed Seal Phoca Hispida in Alaska 1960 2010 written by Lori Trent Quakenbush and published by . This book was released on 2011 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Alaska Department of Fish and Game (ADF&G) has been monitoring the health and status of ringed seals (Phoca hispida) in Alaska since 1960 by collecting information and samples from the Alaska Native subsistence harvest. This monitoring program is especially important because agencies are unable to overcome the logistical and sampling constraints necessary to estimate seal abundance in remote, ice covered waters. As such, reliable estimates of ringed seal abundance or population trend are lacking. Retrospective data analyses from this monitoring program allow us to examine how parameters that affect population size and status may vary in time and how current conditions compare with past conditions. Parameters we monitor that are indicative of population health or status include growth rate, body condition, diet, age distribution, sex ratio, age of maturation, and pregnancy rate. Since 2000, ADF&G has also conducted surveys for local knowledge and hunter preferences and analyzed tissue samples for contaminants and disease. All of these collections rely on the cooperation of coastal subsistence communities. Villages that have participated in the sampling program span the region from Hooper Bay in the Bering Sea to Kaktovik in the Beaufort Sea, including islands in the Bering Sea; an area that encompasses most of the range of ringed seals in Alaska.

Download or read book Ringed Seal Pusa Hispida Population Trends Inferred from Genetics written by Kyle Ritchie and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change is predicted to affect ringed seals negatively. The first objective of my thesis was to assess trends in abundance of ringed seals using genetics. I used genetic profiles to estimate the effective number of breeders (Nb) and assessed relationships with counts from aerial surveys (Ns). I did not detect a relationship between Nb and Ns or a temporal trend in either variable when the entire time series was assessed. However, Nb fluctuated over time, with a negative trend from 1983 to 1994 and becoming stable from 1995 to 2012. My second objective was to determine which variables predicted Nb. My analysis suggested that spring rainfall, snow depth, and the date of fall sea-ice freezeup had a greater influence on Nb than the timing of spring breakup. This research helps address the lack of long-term monitoring data for ringed seals, while improving our understanding of population dynamics.

Download or read book Ringed Seals in the North Atlantic written by North Atlantic Marine Mammal Commission and published by Tromsø [Norway] : North Atlantic Marine Mammal Commission. This book was released on 1998 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Federal Register written by and published by . This book was released on 2014 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conservation Monitoring in Freshwater Habitats written by Clive Hurford and published by Springer Science & Business Media. This book was released on 2009-12-09 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: As in the terrestrial environment, most data collection from freshwater habitats to date falls into the survey, surveillance or research categories. The critical difference between these exercises and a monitoring project is that a monitoring project will clearly identify when we need to make a management response. A Model for Conservation Management and Monitoring Monitoring (as defined by Hellawell) is essentially a tool of practical conservation management, and Fig. 1.1 shows a simple, but effective, model for nature conser- tion management and monitoring. The need for clear decision-making is implicit in this model. First we must decide what would represent a favourable state for the key habitat or species, and then we must decide when to intervene if the state is (or becomes) unfavourable. A third, often overlooked, but equally important, decision concerns when we would consider the habitat or species to have recovered; this is unlikely to be the same point that we became concerned about it. This decision not only has resource imp- cations, it can also have major implications for other habitats and species (prey species are an obvious example). All of these decisions are essential to the devel- ment of an efficient and effective monitoring project.

Download or read book Marine Mammal Protection Act and Endangered Species Act Implementation Program 1999 written by Anita L. Lopez and published by . This book was released on 2000 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Marine Fisheries Service (l\rNßS) conducted an aerial survey of the beluga whale population in Cook Inlet, Alaska, during 8-14 June 1999. The 41.5 hr surveywas flown in a twin-engine, high-wing aircraft at an altitude of 244 m (800 ft) and speed of 185 km/hr (100 kt) along a trackline 1.4 km from shore, consistent with annual surveys flown each year since 1993. The flights in 1999 included one or more surveys of coastal areas around nearly the entire Inlet and 1,790 km oftransects across the Inlet. Paired, independent observers searched on the coastal (left) side of the plane, where virtually all sightings occur, while a single observer and a computer operatorldatarecorder were on the right side. In addition, each day a different visitor observed from the left side. After finding beluga groups, a series of aerial passes were made to allow at least two pairs of primary observers to make four or more counts of each group. Inter-day counts ranged from 75 to160 belugas near the Susitna River (between the Beluga and Little Susitna Rivers), 13 to 43 in Knik Arm, and 17 to 30 in Chickaloon Bay, but no belugas were found in lower Cook Inlet. The sum of the aerial estimates (using median counts from each site, not corrected for missed whales) ranged from 197 to 221 whales, depending on observer. The index count for 1999 is 217 , which is slightly higher than the index counts for 1998 (193) but lower than all index counts by NMFS observers between 1993-97

Download or read book Chukchi Sea Information Update written by David A. Hale and published by . This book was released on 1987 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compendium of summaries of presentations given at meeting in Anchorage on March 27, 1986 of lease sale planning for offshore oil and gas development in the Chukchi Sea. Includes chapters on the physical oceanography, meteorology, geology, processes and potential geohazards, summertime sea ice intrusions, environmental and social impacts on the sea and on land. Also gray whale distribution in the Chukchi and Bering seas.

Download or read book Migrating Ringed Seals and Offshore Seismic written by Lois A. Harwood and published by . This book was released on 2002 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The ringed seal is an important element of the arctic marine ecosystem, both as the main prey of polar bears, and a major consumer of marine fish and invertebrates (Smith 1987). It continues to be an important species in the subsistence harvests and economy of Holman, as well as in Sachs Harbour, Tuktoyaktuk and Paulatuk (Harwood et al. 2000). Seals are harvested for human and dog food and for pelts used in handicrafts and clothing. Over the past three years, four ringed seals were tagged in each of 1999, 2000 and 2001, with satellite-linked transmitters. The seals were captured near the Inuvialuit communities of Holman (1999 and 2000) and Paulatuk / Cape Parry (2001), NT, Canada. For 2002, we plan to conduct one further year at the Cape Parry site and in 2003 move to the southeastern Beaufort Sea out of Tuktoyaktuk or Sachs Harbour. Study Objectives: The specific objectives of the study are to: enhance the utility of an existing long-term, community-based seal monitoring program as a tool for studying ecosystem health and productivity; in a community-based program, to develop local expertise in the application of satellite tags to ringed seals in the Inuvialuit Settlement Region; facilitate partnering of industry, government, the Inuvialuit and the private sector in a long-term, ecosystem-based research; document the range and movements of adult, adolescent and young-of-the-year ringed seals from the Safety Channel (Tahiyuyak) area near Holman, from the Cape Parry area of Amundsen Gulf, and the Beaufort Sea offshore of the Mackenzie Delta and Tuktoyaktuk Peninsula areas, from early summer through to late spring; examine the depth and duration of ringed seal dives, time at surface, and distribution and movements of tagged seals in relation to ice conditions and oceanographic features in these areas (depicted in satellite imagery), as a means of elucidating important feeding locations within the region. ... Migration Routes & Proximity to the Snapper: The migration routes of two of the seals (11747, 5092) in Zones A and B followed a linear route in a southwesterly direction, offshore of the Tuk Peninsula and Mackenzie Delta (Fig. 1). The duty cycling of the tags started in Zone B, and thus the tags were "off" for part of the time that two of the seals were in the lease area (Sept. 27-29, 2001). Tracks for this area had to be interpolated from the locations available before and after the interruption due to the duty cycling of the tags. Three seals spent 2 d (5092), 4.5 d (11747) and 6 d (21212) travelling from east to west through Zone B. The closest that seal 5092 came to the operating Snapper was estimated to be 49 km on Sept 28 (Table 3). Seal 11747 followed a similar track as seal 5092, however then altered course to the south and traveled directly through the western portion of the lease area. This seal was interpolated to have come within 18 km of the operating Seismic vessel on September 28, 2001 (Table 3). This seal continued its migration, eventually arriving at the Yukon coast. This is an important late summer feeding area for both ringed seals and bowhead whales (Smith et al 1973; Harwood 1989; Harwood and Stirling 1992). Seal 21212 followed a similar westward path as 11747 and 5092 in Zone A, however altered course to a northward direction part of the way across Zone A. The seal continued in a north-westerly direction, then moved to the southwest following the shelf break zone through the rest of Zone B. This seal passed within 57 km of the Snapper on October 3. The shelf-break zone is a well-known feeding area for ringed seals and bowhead whales during the open water period (Harwood and Stirling 1992). The comparison of seal movements and Snapper activity presents a unique opportunity to examine the movement of ringed seals through an area of industrial activity. The duty cycling interruption and the small sample size (n=3) precludes drawing firm conclusions as to possible short-term effects (e.g. avoidance re sponses) or lack thereof. However, on a regional scale, it appears that the seals completed their migration from east to west unhampered, following similar routes and travelling at similar rates as each other. The diversion of seal 21212 to the shelf break zone was likely related to feeding, although it cannot be discounted that this could have been a "detour". The point at which the seal altered it's course was an estimated 110 km from the vessel, and this is beyond the distance at which a seal would be expected to be disturbed or possibly even detect an operating ship. In all cases, the seals migrated through Zone B, and into Zones C and D at similar rates and along similar headings throughout their rapid westward migration"--ASTIS [online] database.