Recent Submissions

  • Generation length and percent mature estimates for IUCN assessments of cetaceans

    Taylor, Barbara L.; Chivers, Susan J.; Larese, Jason; Perrin, William F.; United States. National Oceanic and Atmospheric Administration. National Marine Fisheries Service. Southwest Fisheries Science Center (Southwest Fisheries Science CenterLa Jolla, CA, 2007)
    We estimated generation length and percent mature for 58 cetacean species to assess theirstatus using criteria developed by the IUCN. We first reviewed the literature and types of dataavailable and then developed a set of simple rules to ensure consistent use of the best availabledata to estimate these parameters. The method we developed estimated percent mature for thecurrent population and the generation length for the pre-disturbance population using a simple 5-parameter demographic model based on age of first reproduction, inter-birth interval, maximumage of reproductive females, calf survival rate, and non-calf survival. When parameter estimateswere not available for a species, we used available estimates from congeners. The maximum ageof females was estimated based on the relationship between maximum length of females andmaximum age of females for all species with data available. Generation length and percentmature were not calculated if data for the first two model parameters were unavailable for anycongener (n = 29). Model-based estimates of these parameters were very close to the estimatesfor 6 species calculated from empirical data.
  • Emergency assistance for the assessment and mitigation of the environmental impacts caused by the oil spill produced by the tanker San Jorge on 8 February, 1997

    Levine, Edwin; Mearns, Alan J.; Loughlin, Thomas R. (United Nations Development Program/United States National Oceanic and Atmospheric Administration, 1997-02-28)
  • Habitat selection and territorial competition as the causes of bathymetric segregation of sibling rockfishes (Sebastes)

    Larson, Ralph John (University of California Santa Barbara, Biology, 1977-08)
    The sibling rockfish species Sebastes carnatus and S. chrysomelas are morphologically similar residents of rocky reefs off the coast of California and Baja California. They use the same microhabitats (rocky areas with holes that provide shelter), and eat the same prey (mainly crabs and shrimp). However, they segregate by depth, chrysomelas living shallower than carnatus. In most areas they co-occur only in a narrow zone of overlap.Much ecological theory would suggest that the bathymetric segregation of these closely-related species is the result of interspecific competition for common resources. To test this hypothesis, I conducted a controlled reciprocal removal experiment at Santa Cruz Island, spearing S. carnatus in one area, S. chrysomelas in another, and leaving a third area undisturbed. S. carnatus moved into shallow water where chrysomelas was removed, and chrysomelas moved into slightly deeper water where carnatus was removed. There were no changes at the control site. Both species, then, can tolerate conditions outside of their normal depth ranges, and are limited in part by the presence of the other species. However, carnatus may have less effect on chrysomelas than vice versa.The segregation of the two species is apparently initiated by the preferential settlement of young fish from the plankton, S. chrysomelas in shallow water and S. carnatus deeper. However, such other factors as differential predation may also affect the distributions of very young fish, since not all young fish were identifiable to species for a short period after settlement.The species compete through interspecific territoriality. I observed tagged fish of each species for one year. Most individuals of both species defended territories the year around. Their territories consisted of a shelter hole and a surrounding area (although some fish had shelter holes some distance from their areas of general activity). The larger defended area is presumably used to secure a supply of food. Larger fish had larger territories, as did fish living in deeper water, where prey was relatively scarce. At each of my three study sites, there was a pool of small, non-territorial fish. Some established territories when territorial neighbors were removed. Thus they were prevented from having territories by the territory holders, indicating that there is competition for space within each species. Where S. carnatus and S. chrysomelas co-occur, interactions between species were the same as within species.However, S. chrysomelas proved to be socially dominant over S. carnatus in laboratory trials. Interspecific pairs of fish, matched in size, were introduced to aquaria and allowed to fight for the single shelter hole provided. S. chrysomelas males won nearly 70% of the trials. These results raise the question of how carnatus can limit the socially dominant chrysomelas.Two factors probably help S. carnatus exclude S. chrysomelas from deep water. First, because chrysomelas settles from the plankton mainly in shallow water, young nonterritorial carnatus will have first access to space in deep water when it becomes available through the death or emigration of territory holders. Given the advantage of prior residence, then, these fish can maintain their territories against chrysomelas.The second factor is probably the decrease in prey density with depth. My hypothesis is that chrysomelas strongly prefers areas of high prey density in shallow water, and does not fight as determinedly for less-preferred areas of low prey density in deep water. Thus chrysomelas may not be socially dominant in deep water, and is aggressively excluded by carnatus even when the latter does not have the advantage of prior residence.
  • El bentos de la macrolaguna del Golfo de Batabanó

    Alcolado, Pedro M.; Instituto de Oceanología, Academia de Ciencias de Cuba (Editorial AcademiaLa Habana, Cuba, 1990)
  • Bycatch in the U.S. Gulf of Mexico menhaden fishery: Results of onboard sampling conducted in the 1992 fishing seas

    Condrey, Richard (Coastal Fisheries Institute, Louisiana State UniversityBaton Rouge, LA, 1994-08)
  • Abstracts of major CREDDP publications

    Fox, David (Columbia River Estuary Data Development Program[Astoria, OR], 1984-06)
  • Guide to the use of CREDDP information for environmental assessments

    Nehlsen, Willa; Blomberg, Georgiana; Bell, Stewart (Columbia River Estuary Study TaskforceAstoria, OR, 1984-06)
  • Marine mammals of the Columbia River estuary

    Jeffries, Steven (Washington Department of GameOlympia, WA, 1984-01)
  • Population status of selected stocks of salmonids from the mid-Columbia River basin

    Peven, Charles M. (Chelan County Public Utility District, Fish and Wildlife OperationsWenatchee, WA, 1992-03-17)
  • Geographical variation in the life history of Sebastes chrysomelas

    Zaitlin, Jody A. (San Francisco State University, 1986-08)
    I compared life history characteristics (growth, reproduction and lifespan) of the black and yellow rockfish, Sebastes chrysomelas, from central California (Monterey and Carmel Bays) and southern California (off Santa Barbara and Santa Cruz Island). Fish of both sexes from central California aged four and older were larger at age than fish from southern California. Central California fish were also heavier at length than fish collected in southern California. Although southern California fish matured at a smaller size than fish from central California, the age at maturity was the same for the two sites. At both sites, 100% of the males were mature by age five, and 100% of the females were mature at age six. Length and weight specific fecundity were greater for females collected in southern California, although the difference may be offset by smaller egg size in southern California. There was no apparent difference in mortality rates between the two areas. Higher water temperatures may explain the observed differences in growth between the two locations.
  • Environmental factors influencing English sole (Parophyrus vetulus) populations in San Francisco Bay, California

    Pearson, Donald E. (University of the Pacific, 1985-05)
    Population abundances of English sole within the San Francisco Bay from 1973 to 1981 showed a significant positive correlation with Delta outflows, and a significant negative correlation with salinity. Temperature in the bay and ocean upwelling showed no correlation with English sole abundance in the Bay. Because of the positive correlation between the abundance of English sole in the South San Francisco Bay and Delta outflow, this study suggests that any factor resulting in a reduction in outflow may reduce the abundance of English sole in the sample area.
  • Agua y Humedales

    Abraham, María Elena; Quintana, Rubén; Mataloni, Gabriela (UNSAM EDITASan Martin, Buenos Aires, Argentina, 2018)
    Este libro contiene las presentaciones de las conferencias invitadas de expertos y las realizadas en formato “poster” por los estudiantes participantes en el Workshop “Aguas + Humedales”, realizado en San Martín entre el 17 y el 22 de octubre de 2016 en la Universidad Nacional de San Martín, San Martín, Argentina. Con el objeto de brindar a los estudiantes de posgrado un panorama amplio del problema del agua y su proyección hacia el futuro, el material que aquí se presenta se ocupa de temas tales como el agua como fuente segura para consumo humano y su vida cotidiana, como recurso fundamental para la actividad agropecuaria, como fuente de alimentos, como fluido de proceso y de transporte de calor, como vía de comunicación y transporte. Se plantean interrogantes sobre la disponibilidad del recurso, sobre la intervención humana en el ciclo hidrológico y en el clima. También se analizan problemas relacionados con tecnologías para el tratamiento de aguas, tanto para consumo humano como tratamiento de efluentes de diverso tipo. Se presta especial atención a la dimensión social del tema: derecho y economía del agua, estudios vinculados con las decisiones sobre el uso del recurso y el desarrollo de legislaciones y regulaciones.
  • The fate of petroleum in the marine environment

    Wheeler, R.B. (Exxon Production Research Company, 1978-08)
    This report outlines progress toward understanding the fate of petroleum spilled in the marine environment. The report updates the 1975 National Academy of Sciences report "Petroleum in the Marine Environment" and emphasizes the fate of oil in the higher latitudes. The physical, chemical, and biodegradative processes throughout the history of an oilspill are covered in this report. An attempt is made to identify processes dominating movement and weathering at various times after the spill and, when possible, to present equations for the prediction of the effects of these processes. High-priority areas for future research are outlined.
  • Off-shore disposal of chemical agents and weapons conducted by the United States

    Historical Research and Response Team (Corporate Information Office, U.S. Army Research, Development and Engineering CommandAberdeen Proving Ground, MD, 2001-03-29)
    Compilation of 73 disposal sites in the Atlantic Ocean, Pacific Ocean, Mediterranean Sea, Indian Ocean, and U.S. rivers and lakes, 1918-1970.
  • All aboard for story telling: What story do you have?

    DeHart, Liz; Winiarz, Elizabeth; Shaw, Joyce (2017-05-17)
    Libraries, museums and cultural institutions have many interesting and historic stories to tell, especially stemming from their geographic locations. As librarians, we are fortunate to be surrounded by a wealth of information and archival history, from research labs to fishing villages, whether science-related or not. These rich narratives are important memoirs, sharing some aspect of life experiences and sometimes in a fun way. The presentation will be a three-person panel providing unique content, resources and stories from each of our institutions or region. What story do you have? Presentation 1: Liz DeHart, STEM Liaison for Marine ScienceThe Lazarette Gazette (Laz Gaz) was an informal newsletter of the University of Texas Marine Science Institute, which began in 1992 and ended in 1999. Each of the issues has a fun, whimsical masthead with a staff caricature, group of people or an illustration of general interest. Egabrag Wocs (Scow Garbage spelled backwards), was the earlier version, short-lived and lasted from 1989 until the publication of the Laz Gaz.The contents for these brief informational reads depended largely on staff members contributing various news, including their research and expeditions. The newsletter served as a means for the Marine Science Institute to share things of interest and definitely in a fun way for everyone. All of the issues are now digitized and ingested into the Texas ScholarWorks digital repository of the University of Texas Libraries.Presentation 2: Elizabeth Winiarz, Science LibrarianLocated in New Bedford, the nation's most valuable fishing port, the New Bedford Fishing Heritage Center is dedicated to preserving and presenting the story of the fishing industry past, present and future through exhibits, programs and archives. This presentation will take you through a sampling of the oral histories, online exhibits and other treasures made available through this rich resource. Presentation 3: Joyce Shaw, Head Librarian, ProfessorDopeia was a humor, satire of science publication produced by members of the American Society of Ichthyologists and Herpetologists for about a 50 year period, 1940-1990. Contributions included works such as “Charles ‘d’Tuna” (1990) writing about a new species of fish from Charleston Harbor, South Carolina (the “fish” is actually a fishing lure shaped like a fish) and Ima Big Snoop (1966) “The sex-life of the soft-lipped gourami “ and included cartoons, poetry, minutes of meetings, and tables of contents with titles of articles nowhere to be found in the issue in hand. Gunter Library is home to 17 issues of this classic humor work, which shows an irreverent and not-so-serious side of science.
  • Bibliography of the SAIL Panama Canal Zone Project 2008 : a selected bibliography

    DeHart, Liz (University of Texas Marine Science InstitutePort Aransas, TX, 2009)
    During the 18th Annual 2008 SAIL meeting at the Smithsonian Tropical Research Institute in Panama, Vielka Chang-Yau, librarian, mentioned the need to digitize and make available through the Aquatic Commons some of the early documents related to the U.S. biological survey of Panama from 1910 to 1912. With the assistance of SAIL, a regional marine librarian’s group, a digital project developed and this select bibliography represents the sources used for the project. It will assist researchers and librarians in finding online open access documents written during the construction of the Panama Canal, specifically between 1910-1912. As the project progressed, other items covering the region and its biological diversity were discovered and included. The project team expects that the coverage will continue to expand over time.(PDF contains 9 pages)
  • Trophic and life history considerations with respect to multispecies management policies

    Adams, Peter Burton (University of California, Davis, Ecology, 1988)
    As fisheries become more heavily exploited, the need for multispecies management has become more apparent and trophic relationships are cited as the primary cause for this need for multispecies management. This thesis investigates one aspect of the impact of trophic relationships on multispecies management; indirect effects on food chains by predators. The approach chosen to investigate the impact of trophic relationships on multispecies harvesting is a simulation one. Although the results of a simulation approach are not as powerful as those from an experimental study, the practicality in terms of testing alternative management plans is much higher. The model is of the Catalina nearshore benthic fish community. The choice is a practical one. The feeding habitats of the Catalina nearshore benthic fishes have been studied extensively and a data base of this quality and breadth is necessary for the parameter estimation for this modeling effort. This thesis is divided into four parts: 1) the analysis of feeding selectivity, 2) a review of feeding of benthic fishes at Catalina Island, 3) the modeling effort itself, 4) a review of population parameters and life history patterns of marine fishes.
  • A national compendium of freshwater fish and water temperature data. Volume II: Temperature requirement data for thirty fishes

    Hokanson, Kenneth E.F. (U.S. Environmental Protection Agency, Environmental Research LaboratoryDuluth, MN, 1990)
    Compilation of the temperature requirements of freshwater fishes began as part of our field validation research activity. My literature search covered the basic data used in development of temperature criteria for freshwater aquatic life (NAS/NAE 1973; U.S. EPA 1976; Brungs and Jones 1977) up through 1978. In the first 30 tables, I summarize the lethal temperatures, lower and upper zero net growth and optimum temperature values, final preferendum and avoidance temperatures, lower and upper embryo tolerance limits, lowest and highest spawning temperatures and earliest and latest spawning times for thirty fish species. Pertinent test conditions are listed for each experiment. Responses are described by footnotes to Tables 1-30. References are cited for each stated value. Variation in the measured thermal response values is given for each species that has 2 or more measurements. Variation of 2-5°C or more is common among species and thermal responses. Tables 32-42 summarize the basic response data among thirty species for use in subsequent synthesis reports.
  • Assessing recent warming using instrumentally homogeneous sea surface temperature records

    Hausfather, Zeke; Cowtan, Kevin; Clarke, David C.; Jacobs, Peter; Richardson, Mark; Rohde, Robert (2017)
    Sea surface temperature (SST) records are subject to potential biases due to changing instrumentation andmeasurement practices. Significant differences exist between commonly used composite SST reconstructionsfrom the National Oceanic and Atmospheric Administration’s Extended Reconstruction Sea Surface Temperature(ERSST), the Hadley Centre SST data set (HadSST3), and the Japanese Meteorological Agency’s CentennialObservation-Based Estimates of SSTs (COBE-SST) from 2003 to the present. The update from ERSST version 3bto version 4 resulted in an increase in the operational SST trend estimate during the last 19 years from 0.07° to0.12°C per decade, indicating a higher rate of warming in recent years. We show that ERSST version 4 trendsgenerally agree with largely independent, near-global, and instrumentally homogeneous SST measurementsfrom floating buoys, Argo floats, and radiometer-based satellite measurements that have been developedand deployed during the past two decades. We find a large cooling bias in ERSST version 3b and smallerbut significant cooling biases in HadSST3 and COBE-SST from 2003 to the present, with respect to most seriesexamined. These results suggest that reported rates of SST warming in recent years have been underestimated in these three data sets.

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