The nesting biology of Pacific Loons, Gavia pacifica, was studied from 1973 to 1975 on the Yukon-Kuskokwim Delta, Alaska. Loons maintained territories on ponds throughout the pre-nesting period. Both adults incubated eggs and raised the young. Males incubated more than females during early incubation, and females more than males during late incubation. The female assumes much of the early brood rearing, with the male assisting more when food demands of young increase later in brood rearing.
","language":"English","publisher":"Ottawa Field-Naturalists' Club","usgsCitation":"Petersen, M.R., 1989, Nesting biology of pacific loons, Gavia pacifica, on the Yukon-Kuskokwim Delta, Alaska: Canadian Field-Naturalist, v. 103, no. 2, p. 265-269.","productDescription":"5 p.","startPage":"265","endPage":"269","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":335195,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.biodiversitylibrary.org/part/356129","text":"Journal's Website"},{"id":335196,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Yukon Delta National Wildlife Refuge, Yukon-Kuskokwim Delta","volume":"103","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58a18227e4b0c825128564b4","contributors":{"authors":[{"text":"Petersen, Margaret R. 0000-0001-6082-3189 mrpetersen@usgs.gov","orcid":"https://orcid.org/0000-0001-6082-3189","contributorId":167729,"corporation":false,"usgs":true,"family":"Petersen","given":"Margaret","email":"mrpetersen@usgs.gov","middleInitial":"R.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":663420,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70181036,"text":"70181036 - 1989 - Diurnal and seasonal patterns of colony attendance in the Northern Fulmar, Fulmarus glacialis","interactions":[],"lastModifiedDate":"2023-11-14T12:10:30.006445","indexId":"70181036","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1163,"text":"Canadian Field-Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Diurnal and seasonal patterns of colony attendance in the Northern Fulmar, Fulmarus glacialis","docAbstract":"The annual cycle of Northern Fulmars (Fulmarus glacialis) in the western Gulf of Alaska includes about six months from mid-April to mid-October when birds are associated with land at the Semidi Islands. The pre-laying stage in five years was marked by recurrent peaks in attendance that included up to 90% of the population, and alternate periods of 2 to 12 days when the breeding ground was deserted. Serial correlation of daily attendance indicated a cyclic pattern with a half-period of five to seven days. Maximum attendance at breeding sites usually occurred in the evening after a gradual increase in numbers during the day. Percentage of attendance by nonbreeding and failed birds varied widely with breeding success, but the seasonal occurrence of nonbreeders followed a consistent pattern: attendance by siteholding nonbreeders peaked before egg-laying, then steadily declined, whereas an influx of nonbreeding floaters occurred in July and August. Different wind directions and speeds influenced the number of birds at the colony for up to three days after they occurred, but it was not possible to explain the birds' behaviour during the pre-laying period in terms of simple linear relationships between attendance and weather. Rather, synchronized attendance appeared to be a social phenomenon mediated by environmental cues such as a change in wind direction.
","language":"English","publisher":"Ottawa Field-Naturalists' Club","usgsCitation":"Hatch, S.A., 1989, Diurnal and seasonal patterns of colony attendance in the Northern Fulmar, Fulmarus glacialis: Canadian Field-Naturalist, v. 103, no. 2, p. 248-260.","productDescription":"13 p.","startPage":"248","endPage":"260","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"links":[{"id":335193,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.biodiversitylibrary.org/part/356127","text":"Journal's Website"},{"id":335194,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Gulf of Alaska","volume":"103","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58a18227e4b0c825128564b6","contributors":{"authors":[{"text":"Hatch, Scott A. 0000-0002-0064-8187 shatch@usgs.gov","orcid":"https://orcid.org/0000-0002-0064-8187","contributorId":2625,"corporation":false,"usgs":true,"family":"Hatch","given":"Scott","email":"shatch@usgs.gov","middleInitial":"A.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":663419,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70186749,"text":"70186749 - 1989 - Seasonal and annual variation in the diet of Atlantic cod (Gadus morhua) in relation to the abundance of capelin (Mallotus villosus) off eastern Newfoundland, Canada ","interactions":[],"lastModifiedDate":"2017-04-10T13:37:29","indexId":"70186749","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1936,"text":"ICES Journal of Marine Science","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal and annual variation in the diet of Atlantic cod (Gadus morhua) in relation to the abundance of capelin (Mallotus villosus) off eastern Newfoundland, Canada ","docAbstract":"The importance of capelin as prey for cod has long been known (Thompson, 1943; and see Lilly (1987) for a review); however, no studies have been conducted on how the highly dynamic seasonal and yearly variations in capelin abundance affect cod diet. We studied the occurrence of capelin in cod stomachs in relation to the relative abundance of capelin at Witless Bay, Newfoundland (47°15’N 52°46’W), during June, July and August, 1982-1984. The mean number of capelin per stomach and the per cent occurrence of stomachs containing capelin were determined for each collection of stomachs. A total of 680 stomachs were examined. Cod were sampled from those caught in gillnets by fishermen and averaged 66 cm ± 8 (s.d.) in 1983 and 62 cm ± 8 (s.d.) in 1984. Relative abundance of capelin in the local habitat was determined by conducting hydroacoustic surveys around Gull Island in Witless Bay, the same area where cod were collected for stomach content analysis. Only hydroacoustic surveys conducted within three days of cod stomach collections were analyzed. Further details of hydroacoustic surveys including quantifications of acoustic echograms are described in Piatt (1989).
","language":"English","publisher":"Oxford Academic","doi":"10.1093/icesjms/45.2.223","usgsCitation":"Methven, D.A., and Piatt, J.F., 1989, Seasonal and annual variation in the diet of Atlantic cod (Gadus morhua) in relation to the abundance of capelin (Mallotus villosus) off eastern Newfoundland, Canada : ICES Journal of Marine Science, v. 45, no. 2, p. 223-225, https://doi.org/10.1093/icesjms/45.2.223.","productDescription":"3 p.","startPage":"223","endPage":"225","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":339490,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada","state":"Newfoundland","otherGeospatial":"Witless Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -52.86895751953124,\n 47.172911278266604\n ],\n [\n -52.730255126953125,\n 47.172911278266604\n ],\n [\n -52.730255126953125,\n 47.287147659289545\n ],\n [\n -52.86895751953124,\n 47.287147659289545\n ],\n [\n -52.86895751953124,\n 47.172911278266604\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"45","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58e8a554e4b09da6799d6424","contributors":{"authors":[{"text":"Methven, David A.","contributorId":179915,"corporation":false,"usgs":false,"family":"Methven","given":"David","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":690447,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":690448,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70184724,"text":"70184724 - 1989 - Impacts of petroleum development in the Arctic","interactions":[],"lastModifiedDate":"2017-03-10T16:57:39","indexId":"70184724","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Impacts of petroleum development in the Arctic","docAbstract":"In their article “Cumulative impacts of oil fields on northern Alaskan landscapes.” D. A. Walter et al. (1) document some direct and indirect impacts of petroleum development in the Arctic on selected portions of the Prudhoe Bay Oil field. While most of the kinds of impacts they discuss are valid points to consider in designing an arctic oil field, the magnitude of what they describe is not representative of the Prudhoe Bay field, in general, or of newer oil fields, such as Kuparuk to the west of Prudhoe. It is even less applicable in areas of higher topographic relief, such as the coastal plain of the Arctic National Wildlife Refuge (ANWR).
Any development will cause an impact to the land. In the Arctic, as noted by Walker et al., gravel roads and pads have been built that are thick enough to support facilities while the thermal integrity of the underlying permafrost is maintained. Decision-makers must evaluate whether or not the gains of development are worth the impacts incurred. Accurate assessment of both direct and indirect impacts is essential.
","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.245.4919.764","usgsCitation":"S.B., R., 1989, Impacts of petroleum development in the Arctic: Science, v. 245, no. 4919, p. 764-765, https://doi.org/10.1126/science.245.4919.764.","productDescription":"2 p.","startPage":"764","endPage":"765","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":337402,"rank":2,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70184739","text":"Walter et al. 1987 (Cumulative impacts of oil fields on northern Alaskan landscapes)"},{"id":337401,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Arctic National Wildlife Refuge","volume":"245","issue":"4919","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c3c951e4b0f37a93ee9b8c","contributors":{"authors":[{"text":"S.B., Robertson","contributorId":188411,"corporation":false,"usgs":false,"family":"S.B.","given":"Robertson","email":"","affiliations":[],"preferred":false,"id":682743,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70184438,"text":"70184438 - 1989 - Exxon Valdez bird toll","interactions":[],"lastModifiedDate":"2017-03-08T16:29:14","indexId":"70184438","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Exxon Valdez bird toll","docAbstract":"No abstract available.
","language":"English","publisher":"Springer Nature","doi":"10.1038/342865b0","usgsCitation":"Piatt, J.F., and Lensink, C.J., 1989, Exxon Valdez bird toll: Nature, v. 342, no. 6252, p. 864-866, https://doi.org/10.1038/342865b0.","productDescription":"2 p.","startPage":"864","endPage":"866","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"links":[{"id":337138,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"342","issue":"6252","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c12664e4b014cc3a3d3537","contributors":{"authors":[{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":681498,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lensink, Calvin J.","contributorId":99612,"corporation":false,"usgs":false,"family":"Lensink","given":"Calvin","email":"","middleInitial":"J.","affiliations":[{"id":33810,"text":"National Wildlife Refuge Association","active":true,"usgs":false}],"preferred":false,"id":681499,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70184437,"text":"70184437 - 1989 - The birth of the Indian Ocean","interactions":[],"lastModifiedDate":"2017-03-08T16:28:33","indexId":"70184437","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"The birth of the Indian Ocean","docAbstract":"No abstract available.
","language":"English","publisher":"Springer Nature","doi":"10.1038/337506a0","usgsCitation":"Leg 123 Shipboard Scientific Party, 1989, The birth of the Indian Ocean: Nature, v. 337, no. 6207, p. 506-507, https://doi.org/10.1038/337506a0.","productDescription":"2 p.","startPage":"506","endPage":"507","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":479887,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1038/337506a0","text":"Publisher Index Page"},{"id":337137,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"337","issue":"6207","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c12664e4b014cc3a3d3539","contributors":{"authors":[{"text":"Leg 123 Shipboard Scientific Party","contributorId":187732,"corporation":true,"usgs":false,"organization":"Leg 123 Shipboard Scientific Party","id":681501,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70184285,"text":"70184285 - 1989 - Attendance patterns of murres at breeding sites: Implications for monitoring","interactions":[],"lastModifiedDate":"2017-03-06T16:20:06","indexId":"70184285","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Attendance patterns of murres at breeding sites: Implications for monitoring","docAbstract":"We studied attendance patterns (presence and absence at breeding sites) of common murres (Uria aalge) and thick-billed murres (U. lomvia) at a colony in the Semidi Islands, western Gulf of Alaska. The period from mid-laying through hatching was appropriate for censusing because counts were subject to the least amount of daily variation. Time of day and weather did not have large effects on the counts and serial dependence was weak or absent. A trend in murre numbers during the census period occurred in 2 of 4 years but the direction of change was inconsistent. Counts made on 40 consecutive days were needed to detect a 6-8% change in numbers between years, whereas 5 counts were adequate to detect a 20-26% change in numbers. Annual changes in murre numbers varied among study plots but mean combined counts differed by 6-16% between years. Behavioral differences alone were inadequate to explain the annual variation in plot counts because site occupancy rates of individual murres were relatively constant.
","language":"English","publisher":"Wiley","doi":"10.2307/3801154","usgsCitation":"Hatch, S.A., and Hatch, M.A., 1989, Attendance patterns of murres at breeding sites: Implications for monitoring: Journal of Wildlife Management, v. 53, no. 2, p. 483-493, https://doi.org/10.2307/3801154.","productDescription":"11 p.","startPage":"483","endPage":"493","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"links":[{"id":336893,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Gulf of Alaska, Semidi Islands","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -157.01934814453125,\n 55.92766341247029\n ],\n [\n -156.4453125,\n 55.92766341247029\n ],\n [\n -156.4453125,\n 56.29977711792565\n ],\n [\n -157.01934814453125,\n 56.29977711792565\n ],\n [\n -157.01934814453125,\n 55.92766341247029\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"53","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58be8341e4b014cc3a3a9a2f","contributors":{"authors":[{"text":"Hatch, Scott A. 0000-0002-0064-8187 shatch@usgs.gov","orcid":"https://orcid.org/0000-0002-0064-8187","contributorId":2625,"corporation":false,"usgs":true,"family":"Hatch","given":"Scott","email":"shatch@usgs.gov","middleInitial":"A.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":680838,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hatch, Martha A.","contributorId":181576,"corporation":false,"usgs":false,"family":"Hatch","given":"Martha","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":680839,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70184284,"text":"70184284 - 1989 - Autumn use of Izembek Lagoon, Alaska, by brant from different breeding areas","interactions":[],"lastModifiedDate":"2017-03-07T11:19:30","indexId":"70184284","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Autumn use of Izembek Lagoon, Alaska, by brant from different breeding areas","docAbstract":"Thirty-three adult brant (Branta bernicla) were radiomarked at 4 widely separated areas of the western Canadian arctic and 1 area in western Alaska during June-August 1987. Their use of the Izembek Lagoon on the Alaska Peninsula was monitored through the 1987 fall staging period (Sep-Dec). Eighty percent of the brant (n = 33), including ≥50% of individuals from each of the marking areas, were located at Izembek Lagoon. The mean arrival time for brant marked nearest to Izembek (the Yukon-Kuskokwim Delta [YK], Alas. [900 km away]) was 18 September, followed by those from the Mackenzie Delta, Northwest Territories, (3,500 km away) on 26 September, and brant from Victoria, Melville, and Prince Patrick islands, Northwest Territories [NT], (approx 4,500 km away) on 3 October. The mean duration of their stay at Izembek was 49 days. Within the 48-km-long lagoon there was considerable segregation between black brant (B. b. nigricans) and gray-bellied brant (intermediate between black brant and B. b. hrota).
","language":"English","publisher":"Wiley","doi":"10.2307/3809203","usgsCitation":"Reed, A., Stehn, R.A., and Ward, D.H., 1989, Autumn use of Izembek Lagoon, Alaska, by brant from different breeding areas: Journal of Wildlife Management, v. 53, no. 3, p. 720-725, https://doi.org/10.2307/3809203.","productDescription":"6 p.","startPage":"720","endPage":"725","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"links":[{"id":336894,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Izembek Lagoon","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -163.707275390625,\n 54.88608683754535\n ],\n [\n -161.91375732421875,\n 54.88608683754535\n ],\n [\n -161.91375732421875,\n 55.51152675634138\n ],\n [\n -163.707275390625,\n 55.51152675634138\n ],\n [\n -163.707275390625,\n 54.88608683754535\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"53","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58be8350e4b014cc3a3a9a55","contributors":{"authors":[{"text":"Reed, Austin","contributorId":18833,"corporation":false,"usgs":true,"family":"Reed","given":"Austin","email":"","affiliations":[],"preferred":false,"id":680840,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stehn, Robert A.","contributorId":83986,"corporation":false,"usgs":true,"family":"Stehn","given":"Robert","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":680841,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ward, David H. 0000-0002-5242-2526 dward@usgs.gov","orcid":"https://orcid.org/0000-0002-5242-2526","contributorId":3247,"corporation":false,"usgs":true,"family":"Ward","given":"David","email":"dward@usgs.gov","middleInitial":"H.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":680842,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70184283,"text":"70184283 - 1989 - Body composition and weight dynamics of wintering greater white-fronted geese","interactions":[],"lastModifiedDate":"2017-03-06T16:28:49","indexId":"70184283","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Body composition and weight dynamics of wintering greater white-fronted geese","docAbstract":"Adult greater white-fronted geese (Anser albifrons frontalis) wintering in southern Oregon and California increased or maintained body weight in autumn, lost weight from autumn through winter, and rapidly increased in weight before spring migration in late April. We documented significant annual differences in body weights for both sexes. We related seasonal changes in body weight to changes in lipid levels, which were lowest (12-13% of wet wt in M and F) in mid-March and highest in late April (24% in F). Greater white-fronted geese maintained lipid levels during winter similar to those reported for large subspecies of Canada geese (Branta canadensis), and greater than those reported for small subspecies of Canada geese and other small species of geese. Protein content of carcasses varied significantly in females; i.e., lowest in early October and highest in late October and late April. Differences among species in patterns of weight change and body composition during winter seem to be related to social organization, body size, food type, and foraging behavior. Females left spring staging areas weighing relatively less than most other species of geese and may have benefited from foraging opportunities on the nesting grounds.
","language":"English","publisher":"Wiley","doi":"10.2307/3801310","usgsCitation":"Ely, C.R., and Raveling, D.G., 1989, Body composition and weight dynamics of wintering greater white-fronted geese: Journal of Wildlife Management, v. 53, no. 1, p. 80-87, https://doi.org/10.2307/3801310.","productDescription":"8 p.","startPage":"80","endPage":"87","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"links":[{"id":336895,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California, Oregon","otherGeospatial":"Klamath Basin, Sacremento-San Joaquin Delta, Sacremento Valley","volume":"53","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58be8341e4b014cc3a3a9a31","contributors":{"authors":[{"text":"Ely, Craig R. 0000-0003-4262-0892 cely@usgs.gov","orcid":"https://orcid.org/0000-0003-4262-0892","contributorId":3214,"corporation":false,"usgs":true,"family":"Ely","given":"Craig","email":"cely@usgs.gov","middleInitial":"R.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":680843,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Raveling, Dennis G.","contributorId":89443,"corporation":false,"usgs":true,"family":"Raveling","given":"Dennis","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":680844,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70187621,"text":"70187621 - 1989 - Populations, productivity, and feeding habits of seabirds at Cape Thompson, Alaska: Final report","interactions":[],"lastModifiedDate":"2017-05-11T09:56:55","indexId":"70187621","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"title":"Populations, productivity, and feeding habits of seabirds at Cape Thompson, Alaska: Final report","docAbstract":"Investigations of seabird population sizes and breeding biology were conducted at Cape Thompson from 1959 to 1961 during pre-development studies associated with the Atomic through 1982, the Alaskan Program (OCSEAP) supported determine whether changes Energy Commission’s “Project Chariot.” From 1976 Outer Continental Shelf Environmental Assessment efforts to recensus seabirds at Cape Thompson and had occurred since the 1959-61 period. Prior to the present study, it had been 6 years since the last efforts to census seabird colonies in this area.
We established a field camp at the and occupied it continuously until 31 were selected for cliff nesting species comprising the Cape Thompson complex, mouth of Ikijaktusak Creek on 2 July August 1988. Permanent study plots in four of the five discrete colonies and regular observations were made throughout the study to document attendance patterns, breeding phenology, and success of murres and kittiwakes. Periodic collections of adults offshore were used to determine the food habits of study species. Shore-based work was supplemented with offshore studies of seabird foraging from the USFWS vessel Eagle-Tiglax, 24-31 August (Fig. 2).
Correlation analysis revealed negative trends in murre attendance at all Cape Thompson colonies between 1960 and 1982 or 1988, significantly so for 3 of the 5 colonies. Based on apparent changes in species composition within the colonies, Common Murres declined at a more rapid rate than Thick-billed Murres between 1960 and 1988. Combining information from all colonies, it appears that murre populations have been relatively stable since about 1979. In contrast to murres, the kittiwake population showed no significant trends between 1960 and 1982 or between 1960 and 1988. All fluctuations in kittiwake numbers documented between years were within the variability expected within years. Breeding productivity of murres was about average during 1988 (0.47 young/pair), whereas the productivity of kittiwakes was very poor (0.15 young/pair).
Murres and kittiwakes fed mostly on arctic cod and sand lance distributed widely but in low concentrations (e.g., 0.1-10 g/m3) UP to 1.20 km north and northwest of Cape Thompson. In the total area surveyed (225 km2), only two major feeding aggregations were observed where fish school densities exceeded 15 g/ins. Forage fish densities were higher in shallow Alaska Coastal Current waters than offshore in Bering Sea waters, and piscivorous seabirds like murres and kittiwakes fed mostly in coastal waters. Reduced numbers of fish in murre and kittiwake stomachs in August and low breeding success of kittiwakes suggested that forage fish densities observed around Cape Thompson in late August were sufficient to sustain murres but were insufficient for, or inaccessible to, kittiwakes.
The breeding failure of Black-legged Kittiwakes at Cape Thompson in 1988 was part throughout causes of kittiwakes of a pervasive syndrome of failure in this species observed the Bering/Chukchi seas and Gulf of Alaska in recent years. The recurrent widespread breeding failure need to be identified if are to have a role in area-wide population monitoring during the period of Alaskan OCS development by the oil and gas industry.
The system of land-based plots established in 1988 is recommended for future population monitoring of cliff-nesting birds at Cape Thompson. Based on the coefficients of variation among counts observed in this study, it is estimated that 10 replicate counts per year would detect an 8% change in numbers of Thick-billed Murres between years and a 12% change in Common Murres, with 75% certainty of statistical significance at the 0.05 level. Similarly, a 9% annual change in the population of Black-legged Kittiwakes should be detectable at the 0.05 significance level given samples of 10 replicate counts of the land-based plots.
","language":"English","publisher":"U.S. Fish and Wildlife Service, Alaska Fish and Wildlife Research Center","publisherLocation":"Anchorage, AK","usgsCitation":"Fadely, B.S., Piatt, J.F., Hatch, S.A., and Roseneau, D.G., 1989, Populations, productivity, and feeding habits of seabirds at Cape Thompson, Alaska: Final report, xxi, 429 p.","productDescription":"xxi, 429 p.","numberOfPages":"449","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":341098,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":341097,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.boem.gov/ESPIS/0/923.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Alaska","otherGeospatial":"Cape Thompson","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -166.1894989013672,\n 68.02299414412997\n ],\n [\n -165.4863739013672,\n 68.02299414412997\n ],\n [\n -165.4863739013672,\n 68.24929413342046\n ],\n [\n -166.1894989013672,\n 68.24929413342046\n ],\n [\n -166.1894989013672,\n 68.02299414412997\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"591577f9e4b01a342e691459","contributors":{"authors":[{"text":"Fadely, Brian S.","contributorId":184042,"corporation":false,"usgs":false,"family":"Fadely","given":"Brian","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":694791,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":694792,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hatch, Scott A. 0000-0002-0064-8187 shatch@usgs.gov","orcid":"https://orcid.org/0000-0002-0064-8187","contributorId":2625,"corporation":false,"usgs":true,"family":"Hatch","given":"Scott","email":"shatch@usgs.gov","middleInitial":"A.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":694793,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Roseneau, David G.","contributorId":73394,"corporation":false,"usgs":false,"family":"Roseneau","given":"David","email":"","middleInitial":"G.","affiliations":[{"id":6987,"text":"U.S. Fish and Wildlife Sevice","active":true,"usgs":false}],"preferred":false,"id":694794,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70182760,"text":"70182760 - 1989 - Cytopathology and coagulopathy associated with viral erythrocytic necrosis in chum salmon","interactions":[],"lastModifiedDate":"2017-02-28T11:01:39","indexId":"70182760","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2177,"text":"Journal of Aquatic Animal Health","active":true,"publicationSubtype":{"id":10}},"title":"Cytopathology and coagulopathy associated with viral erythrocytic necrosis in chum salmon","docAbstract":"The 8-month cytopathologic progression of viral erythrocytic necrosis (VEN) disease in chum salmon Oncorhynchus keta is described. Single to multiple acidophilic, cytoplasmic viral inclusion bodies developed first in mature erythrocytes and then, within 1–2 months, all morphologically identifiable hemopoietic cell types contained VEN inclusions. Cytologic analysis indicated that multinucleate giant erythroblasts, ineffective erythropoiesis, and abnormal erythroid cell maturation occurred. A significant increase in blood coagulation time occurred concomitantly. This severe and chronic blood dyscrasia accounts for some of the pathophysiologic sequelae previously observed.
","language":"English","publisher":"Taylor & Francis","doi":"10.1577/1548-8667(1989)001<0255:CACAWV>2.3.CO;2","usgsCitation":"MacMillian, J.R., Mulcahy, D., and Landolt, M., 1989, Cytopathology and coagulopathy associated with viral erythrocytic necrosis in chum salmon: Journal of Aquatic Animal Health, v. 1, no. 4, p. 255-262, https://doi.org/10.1577/1548-8667(1989)001<0255:CACAWV>2.3.CO;2.","productDescription":"8 p.","startPage":"255","endPage":"262","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":336321,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58b69a49e4b01ccd54ff3ffc","contributors":{"authors":[{"text":"MacMillian, John R.","contributorId":152373,"corporation":false,"usgs":false,"family":"MacMillian","given":"John","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":673644,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mulcahy, D.","contributorId":82642,"corporation":false,"usgs":true,"family":"Mulcahy","given":"D.","email":"","affiliations":[],"preferred":false,"id":673645,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Landolt, M.L.","contributorId":73148,"corporation":false,"usgs":true,"family":"Landolt","given":"M.L.","email":"","affiliations":[],"preferred":false,"id":673646,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70015339,"text":"70015339 - 1989 - Geochemistry of placer gold, Koyukuk-Chandalar mining district, Alaska","interactions":[],"lastModifiedDate":"2024-04-17T23:46:27.46273","indexId":"70015339","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2302,"text":"Journal of Geochemical Exploration","active":true,"publicationSubtype":{"id":10}},"title":"Geochemistry of placer gold, Koyukuk-Chandalar mining district, Alaska","docAbstract":"The Koyukuk-Chandalar mining district of the Brooks Range mineral belt in north-central Alaska contains numerous placer gold deposits but few known lode gold sources. Gold grains, collected from 46 placer localities and 6 lode gold sites in the district, were analyzed for Ag and 37 trace elements utilizing direct current-arc optical emission spectroscopy. When possible, several measurements were made on each sample and averaged. Gold content was calculated by the summation of the 38 elements determined and subtracting from 100. The objectives of our study were to characterize the deposits by defining the type and number of distinct geochemical characteristics for the Au, to determine relationships of Au in placer deposits to possible lode sources (placer and lode), to identify possible primary sources of placer gold, and to study processes of placer formation. Interpretation of results emphasize that the Au grains are almost invariably ternary (Au-Ag-Cu) alloys. The average Cu content is 0.040% and the average Ag content and fineness [(Au/Au+Ag)×1,000] are 10.5% and 893 parts per thousand, respectively, for the 46 placer localities.
","language":"English","publisher":"Elsevier","doi":"10.1016/0375-6742(89)90001-0","issn":"03756742","usgsCitation":"Mosier, E.L., Cathrall, J.B., Antweiler, J., and Tripp, R.B., 1989, Geochemistry of placer gold, Koyukuk-Chandalar mining district, Alaska: Journal of Geochemical Exploration, v. 31, no. 2, p. 97-115, https://doi.org/10.1016/0375-6742(89)90001-0.","productDescription":"19 p.","startPage":"97","endPage":"115","numberOfPages":"19","costCenters":[],"links":[{"id":224032,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"31","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a170be4b0c8380cd5536c","contributors":{"authors":[{"text":"Mosier, E. L.","contributorId":71537,"corporation":false,"usgs":true,"family":"Mosier","given":"E.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":370679,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cathrall, J. B.","contributorId":29400,"corporation":false,"usgs":true,"family":"Cathrall","given":"J.","middleInitial":"B.","affiliations":[],"preferred":false,"id":370677,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Antweiler, J.C.","contributorId":35722,"corporation":false,"usgs":true,"family":"Antweiler","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":370678,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tripp, R. B.","contributorId":88707,"corporation":false,"usgs":true,"family":"Tripp","given":"R.","middleInitial":"B.","affiliations":[],"preferred":false,"id":370680,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70015232,"text":"70015232 - 1989 - Petrology and age of volcanic-arc rocks from the continental margin of the Bering Sea: Implications for Early Eocene relocation of plate boundaries","interactions":[],"lastModifiedDate":"2023-09-21T18:09:19.771625","indexId":"70015232","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1168,"text":"Canadian Journal of Earth Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Petrology and age of volcanic-arc rocks from the continental margin of the Bering Sea: Implications for Early Eocene relocation of plate boundaries","docAbstract":"Eocene volcanic flow and dike rocks from the Beringian margin have arc characteristics, implying a convergent history for this region during the early Tertiary. The extrusive rocks are basalt, basaltic andesite, andesite, and minor dacite and rhyolite. The intrusive sample is from a quartz diorite dike intruding serpentinized peridotite. Major-element oxide contents, particularly FeO*/MgO versus SiO2, identify both tholeiitic and calc-alkalic basalt; more silicic lavas have calc-alkalic affinities. Consistent with volcanic-arc compositions, spidergrams show pronounced Nb–Ta depletion and alkali enrichment relative to light-rare-earth-element (LREE) abundance. Chondrite-normalized REE plots show relatively flat patterns, with only slight LREE enrichment for tholeiitic compositions and greater LREE enrichment and lower heavy-rare-earth-element (HREE) abundance for calc-alkalic compositions. The samples, particularly those with calc-alkalic compositions, are rich in plagioclase that is strongly zoned; the more silicic samples contain orthopyroxene, clinopyroxene, and primary amphibole. The quartz diorite dike contains iron-rich almandine phenocrysts that appear to be magmatic, suggesting emplacement at great depth near the base of the crust or upper mantle.Chemical and mineralogical compositions are similar to those of modern Aleutian-arc lavas. They also resemble volcanic-arc compositions from western mainland Alaska, although greater chemical diversity and a stronger continental influence are observed in the Alaskan mainland rocks.Early Eocene ages of 54.4–50.2 Ma for the Beringian samples are well constrained by conventional K–Ar ages of nine plagioclase separates and by concordant 40Ar/39Ar incremental heating and total-fusion experiments. A concordant U–Pb zircon age of 53 Ma for the quartz-diorite dike is in good agreement with the K–Ar data.Plate motion studies of the North Pacific Ocean indicate more northerly directed subduction prior to the Tertiary and a continuous belt of arc-type volcanism extending from Siberia, along the Beringian margin, into mainland Alaska. Around 56 Ma (chron 25–24), subduction changed to a more westerly direction and subduction-related volcanism ceased for most of mainland Alaska. The increasingly oblique angle of convergence should have ended subduction along the Beringian margin as well. However, consistent ages of 54–50 Ma indicate a final pulse in arc-type magmatism during this period of plate adjustment, which may be explained by three different models: (1) The northern and central part of the Beringian margin maintained a higher angle of convergence, allowing a final pulse of arc-type magmatism. (2) The rocks erupted in an early, or proto, Aleutian arc and were rafted against the continental margin along transform faults. (3) The rocks erupted along a leaky transform fault, analogous to calc-alkalic volcanism in the southern California borderland.
","language":"English","publisher":"Canadian Science Publishing","doi":"10.1139/e89-125","issn":"00084077","usgsCitation":"Davis, A.S., Pickthorn, L., Vallier, T., and Marlow, M.S., 1989, Petrology and age of volcanic-arc rocks from the continental margin of the Bering Sea: Implications for Early Eocene relocation of plate boundaries: Canadian Journal of Earth Sciences, v. 26, no. 7, p. 1474-1490, https://doi.org/10.1139/e89-125.","productDescription":"17 p.","startPage":"1474","endPage":"1490","costCenters":[],"links":[{"id":224142,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Russia, United States","state":"Alaska","otherGeospatial":"Bering Sea","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -197.4659960695814,\n 50.52803134071158\n ],\n [\n -150.82047128460496,\n 50.52803134071158\n ],\n [\n -150.82047128460496,\n 66.48242987205629\n ],\n [\n -197.4659960695814,\n 66.48242987205629\n ],\n [\n -197.4659960695814,\n 50.52803134071158\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"26","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7818e4b0c8380cd7862a","contributors":{"authors":[{"text":"Davis, A. S.","contributorId":41424,"corporation":false,"usgs":true,"family":"Davis","given":"A.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":370395,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pickthorn, L.-B.G.","contributorId":83276,"corporation":false,"usgs":true,"family":"Pickthorn","given":"L.-B.G.","email":"","affiliations":[],"preferred":false,"id":370398,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Vallier, T.L.","contributorId":69526,"corporation":false,"usgs":true,"family":"Vallier","given":"T.L.","affiliations":[],"preferred":false,"id":370396,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Marlow, M. S.","contributorId":76743,"corporation":false,"usgs":true,"family":"Marlow","given":"M.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":370397,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70015045,"text":"70015045 - 1989 - Tectonic setting of the Yukon-Koyukuk basin and its borderlands, western Alaska","interactions":[],"lastModifiedDate":"2024-05-30T16:15:45.549679","indexId":"70015045","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Tectonic setting of the Yukon-Koyukuk basin and its borderlands, western Alaska","docAbstract":"The Yukon-Koyukuk basin of western Alaska is composed of an arcuate belt of Jurassic and Early Cretaceous subduction-related volcanic and plutonic rocks (Koyukuk terrane) flanked by deep subbasins filled with mid-Cretaceous terrigenous sedimentary rocks. The basin is bordered on three sides by metamorphosed Proterozoic and Paleozoic continental rocks (Seward, Arctic Alaska, and Ruby terranes) and is separated from the metamorphic borderlands by a narrow, highly tectonized belt of oceanic crust and mantle rocks (composite Angayucham-Tozitna terrane). The oceanic and mantle rocks, which dip inward beneath the basin and are thrust outward onto the borderlands, are divided into three separate thrust panels: (1) a structurally lowest panel (Slate Creek) composed of phyllite and metagraywacke of probable Devonian age, (2) a middle panel (Narvak) composed of imbricated basalt, chert, and gabbro of Devonian to Early Jurassic age, and (3) a structurally highest panel (Kanuti) composed of gabbro and peridotite of probable Middle and Late Jurassic age. The three thrust panels appear to represent a reversely stacked sequence that progresses from continental slope deposits in the lower panel to cumulus and mantle peridotites in the upper. Metamorphic mineral K-Ar ages from garnet amphibolite on the sole of the upper panel suggest that the upper panel was emplaced on the middle panel in the Middle to Late Jurassic. Subsequent accretion of all three panels to the continental rocks of the borderlands occurred in the latest Jurassic and Early Cretaceous, synchronous with arc volcanism within the basin. Arc volcanism waned and the accretionary phase ended in the middle of Early Cretaceous time. Uplift and erosion of the metamorphic borderlands and the obducted oceanic rocks began in late Early Cretaceous and was accompanied by the rapid filling of two flanking subbasins with turbiditic sediments. In the latest Early Cretaceous and early Late Cretaceous, shallow marine and nonmarine conglomerates were deposited around the margins of the basin, and a prograding delta was built out from the southeast margin of the basin across the turbiditic subbasins and the remnant volcanic arc. In the Late Cretaceous, western Alaska was subjected to strong east-west compression which severely deformed both the Yukon-Koyukuk basin and the borderlands. Several widespread magmatic episodes in the mid- and Late Cretaceous and in early Tertiary transgress the basin boundaries and stitch together the accreted arc and oceanic terranes and the continental borderlands.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB094iB11p15807","issn":"01480227","usgsCitation":"Patton, W.W., and Box, S.E., 1989, Tectonic setting of the Yukon-Koyukuk basin and its borderlands, western Alaska: Journal of Geophysical Research Solid Earth, v. 94, no. B11, p. 15807-15820, https://doi.org/10.1029/JB094iB11p15807.","productDescription":"14 p.","startPage":"15807","endPage":"15820","costCenters":[],"links":[{"id":223962,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"94","issue":"B11","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505ba47ce4b08c986b320389","contributors":{"authors":[{"text":"Patton, W. W. Jr.","contributorId":11231,"corporation":false,"usgs":true,"family":"Patton","given":"W.","suffix":"Jr.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":369931,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Box, S. E.","contributorId":38567,"corporation":false,"usgs":true,"family":"Box","given":"S.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":369932,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015359,"text":"70015359 - 1989 - Teleseismically recorded seismicity before and after the May 7, 1986, Andreanof Islands, Alaska, earthquake","interactions":[],"lastModifiedDate":"2024-05-30T15:56:49.003345","indexId":"70015359","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Teleseismically recorded seismicity before and after the May 7, 1986, Andreanof Islands, Alaska, earthquake","docAbstract":"The May 7, 1986, Andreanof Islands earthquake (Mw 8.0) is the largest event to have occurred in that section of the Aleutian arc since the March 9, 1957, Aleutian Islands earthquake (Mw 8.6). Teleseismically well-recorded earthquakes in the region of the 1986 earthquake are relocated with a plate model and with careful attention to the focal depths. The data set is nearly complete for mb≥4.7 between longitudes 172°W and 179°W for the period 1964 through April 1987 and provides a detailed description of the space-time history of moderate-size earthquakes in the region for that period. Additional insight is provided by source parameters which have been systematically determined for Mw≥5 earthquakes that occurred in the region since 1977 and by a modeling study of the spatial distribution of moment release on the mainshock fault plane. A technically significant component of oblique convergence in the central Aleutian arc results in its breakup into clockwiserotating and westward translating blocks. The western part of the Andreanof block is distinct from and stronger than flanking regions. The greater strength of this block segment and strong coupling along the main thrust zone result in the accumulation of high levels of shear stress, which give rise to great earthquakes near its eastern boundary. The occurrence of the 1986 rupture only 29 years after the 1957 earthquake may indicate that in the central Aleutians M 7+ earthquakes ordinarily do represent the predominant mode of strain release. Segmentation of the main thrust zone into upper and lower planes is supported by spatial and temporal patterns of seismicity and by focal mechanism data. This and other lines of evidence indicate a downdip increase in fault strength and possibly in heterogeneity within the main thrust zone in subduction zone environments. Aftershocks of the 1986 earthquake were bounded to the west by the Andreanof block boundary (Adak Canyon) and to the east by an aseismic segment of the main thrust zone near the subducted extension of the Amlia fracture zone. The aftershock distribution was bounded to the south by a forearc shear zone and to the north by the base of the main thrust zone in the Hawley Ridge segment and by the downdip edge of the upper plane of the main thrust zone in the eastern segment. Aftershocks which occurred near the volcanic line at shallow crustal depths in the upper plate were triggered by the mainshock and manifest a partial decoupling of oblique slip in this region along a west-striking right-lateral fault with low shear strength. Aftershock clustering along the main thrust zone was very similar to the distribution of prior seismicity, suggesting a continuation of long-term processes and the existence of areas with distinct mechanical properties. Interconnecting regions of low seismicity during both the premainshock and aftershock periods coincided with areas of major moment release during the mainshock. Seismicity data prior to the 1986 mainshock gave few clues about the location of the mainshock nucleation point, the mainshock size, and its time of occurrence. However, a large part of the mainshock moment release did coincide with a zone of seismic quiescence monitored by the Adak local seismograph network.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB094iB11p15481","issn":"01480227","usgsCitation":"Engdahl, E., Billington, S., and Kisslinger, C., 1989, Teleseismically recorded seismicity before and after the May 7, 1986, Andreanof Islands, Alaska, earthquake: Journal of Geophysical Research Solid Earth, v. 94, no. B11, p. 15481-15498, https://doi.org/10.1029/JB094iB11p15481.","productDescription":"18 p.","startPage":"15481","endPage":"15498","costCenters":[],"links":[{"id":224365,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"94","issue":"B11","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505ba4a5e4b08c986b3204b0","contributors":{"authors":[{"text":"Engdahl, E.R.","contributorId":22906,"corporation":false,"usgs":true,"family":"Engdahl","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":370735,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Billington, S.","contributorId":75925,"corporation":false,"usgs":true,"family":"Billington","given":"S.","email":"","affiliations":[],"preferred":false,"id":370737,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kisslinger, C.","contributorId":40859,"corporation":false,"usgs":true,"family":"Kisslinger","given":"C.","affiliations":[],"preferred":false,"id":370736,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70180931,"text":"70180931 - 1989 - The Resurrection Peninsula ophiolite","interactions":[],"lastModifiedDate":"2018-07-07T17:46:58","indexId":"70180931","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"The Resurrection Peninsula ophiolite","docAbstract":"The Resurrection Peninsula forms the east side of Resurrection Bay (fig. 3). Relief ranges from 437 m (1,434 ft) at the southern end of the peninsula to more than 1,463 m (4,800 ft) opposite the head of the bay. All rock units composing the informally named Resurrection Peninsula ophiolite of Nelson and others (1987) are visible or accessible by boat.
\"Ophiolite\" has been a geologic term since 1827 (Coleman, 1977). The term \"ophiolite\" initially referred to the rock serpentinite; the Greek root \"ophi\" (meaning snake or serpent) alluded to the greenish, mottled, and shiny appearance of serpentinites. In 1927, Steinmann described a rock association in the Alps, sometimes known as the \"Steinmann Trinity', consisting of serpentine, diabase and spilitic lavas, and chert. Recognition of this suite led to the idea that ophiolites represent submarine magmatism that took place early in the development of a eugeosyncline. In the early 1970s the Steinmann Trinity was reconsidered in light of the plate tectonic theory, new petrologic studies, and the recognition of abducted oceanic lithosphere in orogenic belts of the world. In 1972 at a Geological Society of America Penrose Conference (Anonymous, 1972) the term \"ophiolite\" was defined as a distinctive assemblage of mafic to ultramafic rocks, with no emphasis on their origin. A complete ophiolite should contain, from bottom to top:
1) Tectonized ultramafic rocks (more or less serpentinized)
2) Gabbro complex containing cumulus textures and commonly cumulus peridotites
3) Mafic sheeted-dike complex, grading upward into;
4) Submarine pillow lavas of basaltic composition. Common associated rock types include plagiogranite (Na-rich) and an overlying sedimentary section typically dominated by chert.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Guide to the ceology of the Resurrection Bay - Eastern Kenai Fjords area","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Alaska Geological Society","usgsCitation":"Nelson, S.W., Miller, M.L., and Dumoulin, J.A., 1989, The Resurrection Peninsula ophiolite, chap. of Guide to the ceology of the Resurrection Bay - Eastern Kenai Fjords area, p. 9-20.","productDescription":"12 p.","startPage":"9","endPage":"20","numberOfPages":"13","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":335018,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":335016,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://archives.datapages.com/data/alaska/data/022/022001/9_akgs0220009.htm"},{"id":335017,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.alaskageology.org/pubfieldbooks.htm","text":"AGS Publications list: Item #FG13"}],"country":"United States","state":"Alaska","otherGeospatial":"Resurrection Peninsula","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -149.43878173828125,\n 59.796489325638376\n ],\n [\n -149.43878173828125,\n 60.20298075456985\n ],\n [\n -149.04052734375,\n 60.20298075456985\n ],\n [\n -149.04052734375,\n 59.796489325638376\n ],\n [\n -149.43878173828125,\n 59.796489325638376\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"589c3c50e4b0efcedb741120","contributors":{"editors":[{"text":"Nelson, Steven W.","contributorId":74024,"corporation":false,"usgs":true,"family":"Nelson","given":"Steven","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":662891,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Hamilton, Thomas D.","contributorId":91474,"corporation":false,"usgs":true,"family":"Hamilton","given":"Thomas","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":662892,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Nelson, Steven W.","contributorId":74024,"corporation":false,"usgs":true,"family":"Nelson","given":"Steven","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":662888,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, Marti L. 0000-0003-0285-4942 mlmiller@usgs.gov","orcid":"https://orcid.org/0000-0003-0285-4942","contributorId":561,"corporation":false,"usgs":true,"family":"Miller","given":"Marti","email":"mlmiller@usgs.gov","middleInitial":"L.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":662889,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dumoulin, Julie A. 0000-0003-1754-1287 dumoulin@usgs.gov","orcid":"https://orcid.org/0000-0003-1754-1287","contributorId":203209,"corporation":false,"usgs":true,"family":"Dumoulin","given":"Julie","email":"dumoulin@usgs.gov","middleInitial":"A.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":662890,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70196252,"text":"70196252 - 1989 - Nest habitat use of Rio Grande wild turkeys","interactions":[],"lastModifiedDate":"2018-03-28T12:27:05","indexId":"70196252","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3783,"text":"The Wilson Bulletin","printIssn":"0043-5643","active":true,"publicationSubtype":{"id":10}},"title":"Nest habitat use of Rio Grande wild turkeys","docAbstract":"Nest habitat use of Rio Grande Wild Turkeys (Meleagris gallopavo intermedia) was studied along the South Platte River in northeast Colorado in 1986-87. Thirty-three of 35 nests were in riparian habitats. Nests were either in western snowberry (Symphoricarpos occidentalis) (67%) or mixed forbs and grasses (33%). Early season nests were more likely to be in snowberry than late season nests. Nest sites were characterized by greater overstory canopy cover, more shrubs, fewer grasses, and greater understory cover and height than surrounding areas. These areas had more shrubs, fewer large trees, and greater understory cover and height than riparian habitats throughout the study area. Phenology of understory vegetation and the effect of such vegetation on nest predation may influence temporal patterns of nest habitat use.
","language":"English","publisher":"Wilson Ornithological Society","usgsCitation":"Schmutz, J.A., Braun, C.E., and Andelt, W.F., 1989, Nest habitat use of Rio Grande wild turkeys: The Wilson Bulletin, v. 101, no. 4, p. 591-598.","productDescription":"8 p.","startPage":"591","endPage":"598","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":352834,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":352833,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://www.jstor.org/stable/4162788"}],"volume":"101","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5aff313ce4b0da30c1bfd8cf","contributors":{"authors":[{"text":"Schmutz, Joel A. 0000-0002-6516-0836 jschmutz@usgs.gov","orcid":"https://orcid.org/0000-0002-6516-0836","contributorId":1805,"corporation":false,"usgs":true,"family":"Schmutz","given":"Joel","email":"jschmutz@usgs.gov","middleInitial":"A.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":731880,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Braun, Clait E.","contributorId":59368,"corporation":false,"usgs":true,"family":"Braun","given":"Clait","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":731881,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Andelt, William F.","contributorId":49296,"corporation":false,"usgs":false,"family":"Andelt","given":"William","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":731882,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70187697,"text":"70187697 - 1989 - Ethylene glycol (antifreeze) poisoning in a free-ranging polar bear","interactions":[],"lastModifiedDate":"2017-08-29T18:19:25","indexId":"70187697","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3690,"text":"Veterinary and Human Toxicology","printIssn":"0145-6296","active":true,"publicationSubtype":{"id":10}},"title":"Ethylene glycol (antifreeze) poisoning in a free-ranging polar bear","docAbstract":"The bright, fluorescent pink-colored remains of a polar bear were found on an Alaskan island with the gravel and snow adjacent to the bear colored bright purple. Traces of fox urine and feces found nearby were also pink. The punk and purple colors were due to rhodamine B, and ethylene glycol (EG) was present in the soil under the carcass. Evidence is given to suggest the bear consumed a mixture of rhodamine B and EG commonly used to mark roads and runways during snow and ice periods. Such wildlife losses could be prevented by substituting propylene glycol for the EG in such mixtures.
","language":"English","publisher":"Kansas State University","issn":"01456296","usgsCitation":"Amstrup, S.C., Gardner, C.L., Myers, K.C., and Oehme, F.W., 1989, Ethylene glycol (antifreeze) poisoning in a free-ranging polar bear: Veterinary and Human Toxicology, v. 31, no. 4, p. 317-319.","productDescription":"3 p.","startPage":"317","endPage":"319","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":341302,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Leavitt Island","volume":"31","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"591abe3be4b0a7fdb43c8c0f","contributors":{"authors":[{"text":"Amstrup, Steven C.","contributorId":67034,"corporation":false,"usgs":false,"family":"Amstrup","given":"Steven","email":"","middleInitial":"C.","affiliations":[{"id":13182,"text":"Polar Bears International","active":true,"usgs":false}],"preferred":false,"id":695154,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gardner, Craig L.","contributorId":65259,"corporation":false,"usgs":false,"family":"Gardner","given":"Craig","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":695155,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Myers, Kevin C.","contributorId":13143,"corporation":false,"usgs":false,"family":"Myers","given":"Kevin","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":695156,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Oehme, Frederick W.","contributorId":25648,"corporation":false,"usgs":false,"family":"Oehme","given":"Frederick","email":"","middleInitial":"W.","affiliations":[{"id":12661,"text":"Kansas State University","active":true,"usgs":false}],"preferred":false,"id":695157,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70196253,"text":"70196253 - 1989 - Reproductive performance of Rio Grande wild turkeys","interactions":[],"lastModifiedDate":"2018-03-28T12:30:14","indexId":"70196253","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3551,"text":"The Condor","active":true,"publicationSubtype":{"id":10}},"title":"Reproductive performance of Rio Grande wild turkeys","docAbstract":"Frequency, magnitude, and timing of reproduction in Rio Grande Wild Turkey (Meleagris gallopavo intermedia) hens were studied in northeastern Colorado in 1986 and 1987. All adults (n = 12) and 95% (n = 20) of yearlings were known to attempt nesting. Adults initiated first nest attempts earlier than yearlings in 1987 but not 1986. Adults and yearlings did not differ in clutch size or nesting success. There was an inverse relationship between clutch size and initiation date of first nests by adults. Clutch and egg size, however, were not related. Among yearlings, body mass at capture in February was positively correlated with subsequent nest-initiation date. Environmental and social stimuli, but not winter severity, are hypothesized proximate conditions regulating reproduction in this Wild Turkey population.
","language":"English","publisher":"American Ornithological Society","doi":"10.2307/1368119","usgsCitation":"Schmutz, J.A., and Braun, C.E., 1989, Reproductive performance of Rio Grande wild turkeys: The Condor, v. 91, no. 3, p. 675-680, https://doi.org/10.2307/1368119.","productDescription":"6 p.","startPage":"675","endPage":"680","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":352835,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5aff312ae4b0da30c1bfd8ba","contributors":{"authors":[{"text":"Schmutz, Joel A. 0000-0002-6516-0836 jschmutz@usgs.gov","orcid":"https://orcid.org/0000-0002-6516-0836","contributorId":1805,"corporation":false,"usgs":true,"family":"Schmutz","given":"Joel","email":"jschmutz@usgs.gov","middleInitial":"A.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":731883,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Braun, Clait E.","contributorId":59368,"corporation":false,"usgs":true,"family":"Braun","given":"Clait","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":731884,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70184274,"text":"70184274 - 1989 - Acute gastric dilatation and volvulus in a free-living polar bear","interactions":[],"lastModifiedDate":"2017-03-06T15:30:13","indexId":"70184274","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2507,"text":"Journal of Wildlife Diseases","active":true,"publicationSubtype":{"id":10}},"title":"Acute gastric dilatation and volvulus in a free-living polar bear","docAbstract":"A large, adult male polar bear (Ursus maritimus) was found dead on a barrier island north of Prudhoe Bay, Alaska (USA), in June 1987. There were no external signs of trauma. A twisted distended stomach, distinctive parenchymal and fascial congestion, and significant difficulty in repositioning the anterior abdominal organs, indicated that gastric dilatation-volvulus (GDV) was the proximate cause of death. Polar bears frequently consume large quantities of food at one time and have large stomachs that are well adapted to periodic gorging. The scarcity of food in winter and early spring, combined with voluntary fasting and protracted vigorous activity during the breeding season in late spring may have predisposed this bear to GDV. The relationship between GDV and postprandial exercise emphasizes the need for a better understanding of how the present human invasion of arctic habitats may influence polar bear activities.
We describe shipboard and small boat techniques used by the US Fish and Wildlife Service in Alaska to survey marine birds at sea. The basis is a 10-min, 300-m-wide, strip transect taken from a platform moving at a constant speed in a constant direction. Special routines, such as instantaneous counts of traveling birds, are explained to help reduce biases caused by factors such as varying flight patterns, ship-following and avoidance, and patchy distributions. Data recording and coding techniques and formats, based on those developed for the National Oceanic Data Center, are described.
Late Cretaceous and early Tertiary volcanic and plutonic rocks in western Alaska comprise a vast magmatic province extending from the Alaska Range north to the Arctic Circle, south to Bristol Bay, and west to the Bering Sea Shelf. The chemical and isotopic composition of five of these Late Cretaceous to early Tertiary volcanic fields in the north central part of this province were studied to determine if Paleozoic or older continental crust underlies the Yukon-Koyukuk province. Three of the fields, the Blackburn Hills, Yukon River, and Kanuti, occur within the Yukon-Koyukuk province and two, the Sischu and Nowitna, overlie bordering Precambrian and Paleozoic metamorphic terranes to the southeast. High initial 87Sr/86Sr of 0.7075–0.7079 and moderate initial 143Nd/144Nd of 0.51244–0.51247 of rhyolite, dacite, and high-silica andesite of the Sischu volcanic field indicate that the magmas have interacted with the underlying Paleozoic or older continental crust. The relatively limited variation of isotopic (initial 87Sr/86Sr = 0.7044–0.7051; initial 143Nd/144Nd = 0.51256–0.51257) and elemental compositions of andesites from the Nowitna field can be accounted for by assimilation of small amounts of Paleozoic or older continental crust during crystal fractionation of andesite parent magmas at crustal levels. The Blackburn Hills field, which consists of medium-K basalt, andesite, and rhyolite intruded by a small granitic pluton, has a large range in initial 87Sr/86Sr and initial 143Nd/144Nd that plot in the field for 60 Ma mantle, from near mid-ocean ridge basalts to near “bulk-earth” compositions (initial 87Sr/86Sr = 0.7033–0.7052; initial 143Nd/144Nd = 0.51253–0.51290). Andesites and basalts from the Blackburn Hills are divided into two group on the basis of rare earth element (REE) and isotopic composition. Isotopic variation in the more primitive group 1 is best explained by assimilation of the lower crust of the Jurassic to Early Cretaceous Koyukuk terrane by mantle-derived basalts during crystal fractionation, though part of the isotopic variation may be due to metasomatism of an oceanic island basalt type mantle source by fluids derived from subducted sediments. Group 2 andesites from the Blackburn Hills have lower heavy REE abundances and more enriched isotopic compositions. These group 2 andesites and dacites from the Kanuti field, which have (87Sr/86Sr)i = 0.7043–0.7048 and (143Nd/144Nd)i = 0.51248–0.51267, appear to have formed by partial melting of the lower crust of the Koyukuk terrane. The Yukon River field consists of basalt, andesite, dacite, and rhyolite having (87Sr/86Sr)i = 0.7037–0.7051 and (143Nd/144Nd)i = 0.51266–0.51280; its isotopic composition does not require the presence of Paleozoic or older continental crust under the volcanic field and may have formed by interaction between mantle-derived melts and the oceanic Angayucham/Tozitna or island arc Koyukuk terrane. Most of the intrusive rocks and rhyolite domes from the Blackburn Hills volcanic field have (87Sr/86Sr)i = 0.7038–0.7041 and dacites from the Kanuti volcanic field have (87Sr/86Sr)i = 0.7043–0.7048. Thus little or no old continental crust was involved in the genesis of the Late Cretaceous and early Tertiary rocks and therefore probably does not extend beneath this part of the Yukon-Koyukuk province. However, the ultimate source of the small volumes of enriched shoshonitic andesite (87Sr/86Sr = 0.7075, 143Nd/144Nd = 0.5125) erupted at 118 Ma in the Yukon-Koyukuk province may be continental lithosphere, which may have been thrust under this part of the Yukon-Koyukuk province during arc-continent collision in the Early Cretaceous.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB094iB11p15989","issn":"01480227","usgsCitation":"Moll-Stalcup, E., and Arth, J.G., 1989, The nature of the crust in the Yukon-Koyukuk province as inferred from the chemical and isotopic composition of five Late Cretaceous to Early Tertiary volcanic fields in western Alaska: Journal of Geophysical Research Solid Earth, v. 94, no. B11, p. 15989-16020, https://doi.org/10.1029/JB094iB11p15989.","productDescription":"32 p.","startPage":"15989","endPage":"16020","costCenters":[],"links":[{"id":223988,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"94","issue":"B11","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505bae05e4b08c986b323ebd","contributors":{"authors":[{"text":"Moll-Stalcup, E.","contributorId":84636,"corporation":false,"usgs":true,"family":"Moll-Stalcup","given":"E.","affiliations":[],"preferred":false,"id":370933,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Arth, Joseph G.","contributorId":104546,"corporation":false,"usgs":true,"family":"Arth","given":"Joseph","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":370934,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015984,"text":"70015984 - 1989 - Undiscovered lode tin resources of the Seward Peninsula, Alaska","interactions":[],"lastModifiedDate":"2024-01-04T17:38:34.320453","indexId":"70015984","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Undiscovered lode tin resources of the Seward Peninsula, Alaska","docAbstract":"The United States is a net importer of many important minerals, including tin. Consumption of primary tin in the United States is about 36,000 metric tons per year. Identified U.S. tin resources consist of about 40,000 metric tons. Although such figures provide insight about vulnerability to supply disruptions in the short term, they do not provide information about the potential of a country to meet its needs for a commodity from undiscovered domestic sources. Recent developments, including the preparation of models of mineral deposits and their grades and tonnages, and the application of computer simulation techniques to the estimation of metallic mineral resources, make it possible to estimate the magnitude of undiscovered resources, by deposit type, for relatively small areas such as the Seward Peninsula. This paper uses these developments and geophysical data to estimate undiscovered lode tin resources on the Seward Peninsula of Alaska. The assessment is based on a three-step methodology that (1) identifies the types of tin deposits that may be present in the region, (2) identifies the geophysical characteristics of unroofed granites and shallow granitoids, and (3) estimates, on the basis of various combinations of geologic and geophysical conditions, the number of undiscovered deposits present within or near exposed or concealed granite plutons. Computer simulation was used to combine the estimates of the number of deposits with available grade and tonnage models. Simulation experiments were designed to estimate the amount of tin in undiscovered deposits under a variety of limiting conditions. Results of simulation experiments indicate there is a 90 percent chance that the Seward Peninsula contains at least 51,000 metric tons, a 50 percent chance that it contains at least 390,000 metric tons, and a 10 percent chance it contains at least 1,100,000 metric tons of tin in undiscovered greisen, vein, and replacement deposits that have average grades of at least 0.5 percent tin.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.84.7.1936","issn":"03610128","usgsCitation":"Reed, B., Menzie, W., McDermott, M., Root, D.H., Scott, W., and Drew, L., 1989, Undiscovered lode tin resources of the Seward Peninsula, Alaska: Economic Geology, v. 84, no. 7, p. 1936-1947, https://doi.org/10.2113/gsecongeo.84.7.1936.","productDescription":"12 p.","startPage":"1936","endPage":"1947","numberOfPages":"12","costCenters":[],"links":[{"id":222879,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"84","issue":"7","noUsgsAuthors":false,"publicationDate":"1989-11-01","publicationStatus":"PW","scienceBaseUri":"505bbc6ce4b08c986b328c05","contributors":{"authors":[{"text":"Reed, B.L.","contributorId":29434,"corporation":false,"usgs":true,"family":"Reed","given":"B.L.","email":"","affiliations":[],"preferred":false,"id":372251,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Menzie, W. D.","contributorId":52916,"corporation":false,"usgs":true,"family":"Menzie","given":"W. D.","affiliations":[],"preferred":false,"id":372253,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McDermott, M.","contributorId":61568,"corporation":false,"usgs":true,"family":"McDermott","given":"M.","email":"","affiliations":[],"preferred":false,"id":372254,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Root, D. H.","contributorId":74019,"corporation":false,"usgs":true,"family":"Root","given":"D.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":372256,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Scott, W.","contributorId":29498,"corporation":false,"usgs":true,"family":"Scott","given":"W.","affiliations":[],"preferred":false,"id":372252,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Drew, L.J.","contributorId":69157,"corporation":false,"usgs":true,"family":"Drew","given":"L.J.","email":"","affiliations":[],"preferred":false,"id":372255,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70014955,"text":"70014955 - 1989 - Isotopic and trace element variations in the Ruby Batholith, Alaska, and the nature of the deep crust beneath the Ruby and Angayucham Terranes","interactions":[],"lastModifiedDate":"2018-10-22T10:43:02","indexId":"70014955","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Isotopic and trace element variations in the Ruby Batholith, Alaska, and the nature of the deep crust beneath the Ruby and Angayucham Terranes","docAbstract":"Thirty-six samples from plutons of the Ruby batholith of central Alaska were collected and analyzed for 22 trace elements, and many were analyzed for the isotopic compositions of Sr, Nd, O, and Pb in order to delimit the processes that produced the diversity of granodioritic to granitic compositions, to deduce the nature of the source of magmas at about 110 Ma, and to characterize the deep crust beneath the Ruby and Angayucham terranes. Plutons of the batholith show a substantial range in initial 87Sr/86Sr (SIR) of 0.7055–0.7235 and a general decrease from southwest to northeast. Initial 143Nd/144Nd (NIR) have a range of 0.51150–0.51232 and generally increase from southwest to northeast. The δ18O values for most whole rocks have a range of +8.4 to +11.8 and an average of +10.3‰. Rb, Cs, U, and Th show large ranges of concentration, generally increase as SiO2 increases, and are higher in southwest than in northeast plutons. Sr, Ba, Zr, Hf, Ta, Sc, Cr, Co, and Zr show large ranges of concentration and generally decrease as SiO2 increases. Rare earth elements (REE) show fractionated patterns and negative Eu anomalies. REE concentrations and anomalies are larger in the southwest than in the northeast plutons. Uniformity of SIR and NIR in Sithylemenkat and Jim River plutons suggests a strong role for fractional crystallization or melting of uniform magma sources at depth. Isotopic variability in Melozitna, Ray Mountains, Hot Springs, and Kanuti plutons suggests complex magmatic processes such as magma mixing and assimilation, probably combined with fractional crystallization, or melting of a complex source at depth. The large variations in SIR and NIR in the batholith require a variation in source materials at depth. The southwestern plutons probably had dominantly siliceous sources composed of metamorphosed Proterozoic and Paleozoic upper crustal rocks. The northeastern plutons probably had Paleozoic sources that were mixtures of siliceous and intermediate to mafic crustal rocks. The inferred sources could well have been the higher-metamorphic-grade lithologic equivalents of the exposed Proterozoic(?) to Paleozoic schists, orthogneisses, and metavolcanic rocks of Ruby terrane, the silicic portions of which are quite radiogenic. The deeper crustal sources that gave rise to most of the batholithic magmas are inferred to be similar under both the Ruby metamorphic terrane and the Angayucham ophiolitic terrane.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB094iB11p15941","issn":"01480227","usgsCitation":"Arth, J.G., Zmuda, C.C., Foley, N.K., Criss, R.E., Patton, W.W., and Miller, T.P., 1989, Isotopic and trace element variations in the Ruby Batholith, Alaska, and the nature of the deep crust beneath the Ruby and Angayucham Terranes: Journal of Geophysical Research B: Solid Earth, v. 94, no. B11, p. 15941-15955, https://doi.org/10.1029/JB094iB11p15941.","productDescription":"15 p.","startPage":"15941","endPage":"15955","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":224447,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -155.9619140625,\n 67.99110834539987\n ],\n [\n -148.0078125,\n 68.00757101804004\n ],\n [\n -146.95312499999997,\n 66.10716955858042\n ],\n [\n -150.97412109375,\n 64.00486735371551\n ],\n [\n -156.02783203124997,\n 64.01449619484472\n ],\n [\n -155.9619140625,\n 67.99110834539987\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"94","issue":"B11","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505a3f9ae4b0c8380cd64652","contributors":{"authors":[{"text":"Arth, Joseph G.","contributorId":104546,"corporation":false,"usgs":true,"family":"Arth","given":"Joseph","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":369703,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zmuda, Clara C.","contributorId":91991,"corporation":false,"usgs":true,"family":"Zmuda","given":"Clara","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":369702,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Foley, Nora K. 0000-0003-0124-3509 nfoley@usgs.gov","orcid":"https://orcid.org/0000-0003-0124-3509","contributorId":4010,"corporation":false,"usgs":true,"family":"Foley","given":"Nora","email":"nfoley@usgs.gov","middleInitial":"K.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":369699,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Criss, Robert E.","contributorId":39447,"corporation":false,"usgs":true,"family":"Criss","given":"Robert","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":369698,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Patton, W. W. Jr.","contributorId":11231,"corporation":false,"usgs":true,"family":"Patton","given":"W.","suffix":"Jr.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":369700,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Miller, T. P.","contributorId":49345,"corporation":false,"usgs":true,"family":"Miller","given":"T.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":369701,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":1012824,"text":"1012824 - 1989 - Twenty-four hour behavior patterns and budgets of free-ranging reindeer in winter","interactions":[],"lastModifiedDate":"2013-03-20T16:01:07","indexId":"1012824","displayToPublicDate":"1989-01-01T00:00:00","publicationYear":"1989","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3231,"text":"Rangifer","active":true,"publicationSubtype":{"id":10}},"title":"Twenty-four hour behavior patterns and budgets of free-ranging reindeer in winter","docAbstract":"To obtain movement data on wild fulvous tree ducks (Dendrocygna bicolor) 165 immature pen-reared fulvous tree ducks were color-marked and released in three southeast Texas counties in July October 1969/70. Nine (5 percent) of the marked birds were recovered from 3 days to 9 months after release, and an additional 15 birds provided sight records. Many released birds apparently became integrated into the wild population; all of those observed were with wild flocks. Six birds were recovered over 50 miles from the release sites. Four released in late July to mid-September had moved eastward and two went southward in September or later. Five were still in the Texas-Louisiana rice belt (three in late November). The sixth bird was recovered in October in Veracruz, which supports the assumption that U.S. Gulf Coast nesting populations winter in southern Mexico.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Rangifer","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.7557/2.9.1.766","usgsCitation":"Collins, W.B., and Smith, T.S., 1989, Twenty-four hour behavior patterns and budgets of free-ranging reindeer in winter: Rangifer, v. 9, no. 1, p. 2-8, https://doi.org/10.7557/2.9.1.766.","productDescription":"pp. 2-8","startPage":"2","endPage":"8","numberOfPages":"7","costCenters":[{"id":106,"text":"Alaska Biological Science Center","active":false,"usgs":true}],"links":[{"id":486820,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.7557/2.9.1.766","text":"Publisher Index Page"},{"id":130021,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269807,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.7557/2.9.1.766"}],"volume":"9","issue":"1","noUsgsAuthors":false,"publicationDate":"1989-06-01","publicationStatus":"PW","scienceBaseUri":"4f4e4afee4b07f02db697353","contributors":{"authors":[{"text":"Collins, W. B.","contributorId":59751,"corporation":false,"usgs":true,"family":"Collins","given":"W.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":318403,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, T. S.","contributorId":47326,"corporation":false,"usgs":true,"family":"Smith","given":"T.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":318402,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}