Open-File Report最新文献_第7页

Economic analysis for U.S. Geological Survey Coal Basin Assessments 美国地质调查局煤盆地评价的经济分析

Open-File Report Pub Date : 1900-01-01 DOI: 10.3133/ofr20191082

P. Pierce

引用次数: 1

Preliminary bedrock geologic map of the Lahore 7.5-minute quadrangle, Orange, Spotsylvania, and Louisa Counties, Virginia 拉合尔7.5分钟四合院的初步基岩地质图，奥兰治，斯波特西瓦尼亚和弗吉尼亚州路易莎县

Open-File Report Pub Date : 1900-01-01 DOI: 10.3133/ofr20191110

W. Burton

引用次数: 0

Hydrogeology of the sandy uplands of the Bayfield Peninsula, Wisconsin 威斯康辛州贝菲尔德半岛沙地高地的水文地质学

Open-File Report Pub Date : 1900-01-01 DOI: 10.54915/znsx3519

A. Fehling, J. Rawling, G. Graham, P. Chase, S. Swanson

引用次数: 0

New method for correcting bottomhole temperatures acquired from wireline logging measurements and calibrated for the onshore Gulf of Mexico Basin, U.S.A. 美国墨西哥湾盆地陆上电缆测井测量获得的井底温度校正新方法

Open-File Report Pub Date : 1900-01-01 DOI: 10.3133/OFR20191143

L. Burke, O. Pearson, S. Kinney

引用次数: 0

Stream sediment geochemistry of four small drainages on the north shore of Kauai west of Hanalei 哈纳雷以西考艾岛北岸四个小流域的水系沉积物地球化学

Open-File Report Pub Date : 1900-01-01 DOI: 10.3133/OFR20191007

R. Takesue, C. Storlazzi

引用次数: 0

Modeling Least Bell’s Vireo habitat suitability in current and historic ranges in California 在加利福尼亚当前和历史范围内模拟最小贝尔的维里奥栖息地适宜性

Open-File Report Pub Date : 1900-01-01 DOI: 10.3133/OFR20201151

K. Preston, B. Kus, E. Perkins

{"title":"Modeling Least Bell’s Vireo habitat suitability in current and historic ranges in California","authors":"K. Preston, B. Kus, E. Perkins","doi":"10.3133/OFR20201151","DOIUrl":"https://doi.org/10.3133/OFR20201151","url":null,"abstract":"We developed a habitat suitability model for the federally endangered Least Bell’s Vireo (Vireo bellii pusillus) across its current and historic range in California. The vireo disappeared from most of its range by the 1980s, remaining only in southern California and northern Baja California, Mexico. This decline was due to habitat loss and introduction of brood parasitic brown-headed cowbirds (Molothrus ater) into California in the late 1800s. Habitat protection and management since the mid-1980s increased southern California vireo populations with small numbers of birds recently expanding back into the historic range. The vireo habitat model will help meet the U.S. Fish and Wildlife Service recovery objectives by distinguishing specific areas to survey for new occurrences; characterizing important vireo-habitat relationships; and identifying areas for habitat management. We constructed models based on the vireo’s current range to predict suitable habitat in the historic range, which differs substantially in environmental conditions. We used the partitioned Mahalanobis D2 modeling technique designed to predict habitat suitability in areas not included in a sample of species locations and under novel conditions. We constructed alternative models with different combinations of environmental variables hypothesized to be important components of vireo habitat. We selected a set of best performing models to predict suitable habitat for a riparian vegetation grid buffered 500 meters across California. Most models for southern California did not predict suitable habitat in the historic range. The top performing model has an area under the curve value of 0.93. It is a simple model and discriminated among riparian habitats, with only 6 percent predicted as suitable. On average, suitable vireo habitat had more than 60-percent riparian vegetation and flat land at the 150-meter scale, little-to-no slope, and was within 130 meters of water.","PeriodicalId":142152,"journal":{"name":"Open-File Report","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129674899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preliminary geologic map of the Greater Antilles and the Virgin Islands 大安的列斯群岛和维尔京群岛初步地质图

Open-File Report Pub Date : 1900-01-01 DOI: 10.3133/ofr20191036

Frederic H. Wilson, G. Orris, Floyd Gray

引用次数: 7

Arizona hedgehog cactus (Echinocereus triglochidiatus var. arizonicus)—A systematic data assessment in support of recovery 亚利桑那刺猬仙人掌(Echinocereus triglochidiatus var. arizonicus)——支持恢复的系统数据评估

Open-File Report Pub Date : 1900-01-01 DOI: 10.3133/OFR20191004

K. Thomas, Daniel F. Shryock, T. Esque

{"title":"Arizona hedgehog cactus (Echinocereus triglochidiatus var. arizonicus)—A systematic data assessment in support of recovery","authors":"K. Thomas, Daniel F. Shryock, T. Esque","doi":"10.3133/OFR20191004","DOIUrl":"https://doi.org/10.3133/OFR20191004","url":null,"abstract":"The Arizona hedgehog cactus (Echinocereus triglochidiatus var. arizonicus) is endemic to central Arizona in Gila and Pinal Counties, and has been federally listed as endangered by the U.S. Fish and Wildlife Service (FWS) since 1979. Mining, mineral exploration, and highway development have resulted in habitat degradation and loss of individual plants. Therefore, decreases in the population of the cactus are expected to continue. In response to a request from FWS to compile, evaluate, and synthesize data for the cactus, we identified and evaluated existing survey and monitoring data for the cactus and conducted a demographic analysis with suitable data. Systematic surveys for the Arizona hedgehog cactus did not begin until the late 1970s. Early surveys generally were anecdotal descriptions of cactus populations and precisely georeferenced records of individual cactus occurrence did not occur until global positioning systems were widely used. Much of the georeferenced data have been collected by consultants for mining operations, the Arizona Department of Transportation, the U.S. Forest Service, and independent surveyors. Occurrence records have been compiled by the Arizona Game and Fish Department Heritage Data Management System, but submission of these data may be incomplete, and the attributes reported have varied among the contributing entities. The compilation and management of survey data is essential for field-based evidence of the size, distribution, and range extent of the cactus. In support of consistency in future survey data collection, this report makes several suggestions for future surveys. Monitoring for the Arizona hedgehog cactus, defined as repeat observations of the status of cactus individuals, has been done by consulting companies for three mines. Demographic monitoring further involves marking individual cacti in consistently defined plots and recording the fate of each cacti through time, including birth, growth, reproduction, and death. We were able to use demographic monitoring data provided by two consulting companies to calculate survival and population growth rates, using several statistical approaches. Resulting models indicate that larger cacti, as measured by their number of stems, have greater survival rates. Larger individuals also had higher probability of producing more flowers. Small cacti had the lowest survivorship, with potentially only 15–20 percent reaching large size. Most populations monitored by the two companies were stable to increasing. However, there were differences in the growth rates among plots and some plots had negative population growth rates. The demographic monitoring data we used represented relatively dense populations of undisturbed cacti. Hence, overall positive population growth rates were not influenced by any large-scale","PeriodicalId":142152,"journal":{"name":"Open-File Report","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124579907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Western purple martin (Progne subis arboricola) occurrence on the Siuslaw National Forest, Summer 2019 西部紫马丁(Progne subis arboricola)出现在Siuslaw国家森林，2019年夏天

Open-File Report Pub Date : 1900-01-01 DOI: 10.3133/ofr20201130

J. Hagar, Ericka Branch

引用次数: 0

Renewing the National Cooperative Geologic Mapping Program as the Nation’s authoritative source for modern geologic knowledge 更新国家合作地质制图计划，使其成为国家现代地质知识的权威来源

Open-File Report Pub Date : 1900-01-01 DOI: 10.3133/OFR20211013

J. Brock, K. Berry, J. Faulds, R. C. Berg, K. House, Michael J. Marketti, D. McPhee, K. Schmidt, James Schmitt, D. Soller, D. Spears, Ren A. Thompson, H. Thorleifson, G. Walsh

{"title":"Renewing the National Cooperative Geologic Mapping Program as the Nation’s authoritative source for modern geologic knowledge","authors":"J. Brock, K. Berry, J. Faulds, R. C. Berg, K. House, Michael J. Marketti, D. McPhee, K. Schmidt, James Schmitt, D. Soller, D. Spears, Ren A. Thompson, H. Thorleifson, G. Walsh","doi":"10.3133/OFR20211013","DOIUrl":"https://doi.org/10.3133/OFR20211013","url":null,"abstract":"This document presents the renewed vision, mission, and goals for the National Cooperative Geologic Mapping Program (NCGMP). The NCGMP, as authorized by the National Cooperative Geologic Mapping Act of 1992 (Public Law 102-285, 106 Stat. 166 and its reauthorizations), is tasked with expediting the production of a geologic database for the Nation based on modern geologic maps and their supporting data. In addition to highlighting the benefits of geologic maps for economic prosperity, national security, and environmental quality, the report describes the NCGMP structure and components. A renewed vision and mission for the NCGMP are stated, and three goals for guiding the program toward that vision for the next ten years are established. The vision of creating an integrated, three-dimensional, digital geologic map of the United States and its territories to address the changing needs of the Nation by 2030 is thereby defined to drive the activities of all NCGMP components for the next ten years. The strategic actions required to realize the NCGMP vision are identified for each of its components.","PeriodicalId":142152,"journal":{"name":"Open-File Report","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128716266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2