NASA authorization for fiscal year 1981 [microform] : hearings before the Committee on Commerce, Science, and Transportation, United States Senate, Ninety-sixth Congress, second session, on [S.2238... and] S. 2240 ....

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

Nomination--National Transportation Safety Board : hearing before the Committee on Commerce, Science, and Transportation, United States Senate, Ninety-seventh Congress, second session, on nomination of Adm. Donald D. Engen, to be a member, National Transportation Safety Board, June 9, 1982

"Serial no. 97-117."

NTIA authorization : hearing before the Subcommittee on Communications of the Committee on Commerce, Science, and Transportation, United States Senate, One hundredth Congress, first session on reauthorization of the National Telecommunications and Information Administration for fiscal years 1988 and 1989, March 26, 1987.

Shipping list no.: 87-350-P.

Nominations of John Hammerschmidt to be a member of the National Transportation Safety Board, Jeffrey Runge to be Administrator of the National Highway Traffic Safety Administration, Nancy Victory to be Assistant Secretary of Commerce for Communications and Information, and Otto Wolff to be Assistant Secretary of Commerce and Chief Financial Officer : hearing before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Seventh Congress, first session, Wednesday, August 1, 2001.

Distributed to some depository libraries in microfiche.

Management and program weaknesses at the National Aeronautics and Space Administration and the National Science Foundation : hearing before the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Fifth Congress, first session, July 24, 1997.

Shipping list no.: 99-0090-P.

In the United States Circuit Court of Appeals for the Fifth Circuit, January term, 1936 : National Labor Relations Board, petitioner v. Jones & Laughlin Steel Corporation, respondent, on application for enforcement of an order of the National Labor Relations Board : brief for the National Labor Relations Board.

Includes index.

In the United States Circuit Court of Appeals in and for the Fifth Circuit, no. 8171 : Agwilines, Inc., petitioner vs. National Labor Relations Board and J. Warren Madden ... and John M. Carmody and Edwin S. Smith, respondents, review of decision of National Labor Relations Board : petition for review.

Cover title.

In the United States Circuit Court of Appeals for the Third Circuit, March term, 1936 : National Labor Relations Board, petitioner v. Pennsylvania Greyhound Lines, Inc., Greyhound Management Company, corporations, respondents, on application for enforcement of an order of the National Labor Relations Board : brief for petitioner.

At head of title: No. 6007.

In the United States Circuit Court of Appeals for the Fifth Circuit, October term, 1936, no. 8171 : Agwilines, Inc., a corporation, petitioner v. National Labor Relation Board and J. Warren Madden ... and John M. Carmody and Edwin S. Smith, respondents : brief for the National Labor Relations Board.

Cover title.

Report of the National Coast-Defense Board appointed by the President of the United States by Executive Order, January 31, 1905.

"March 5, 1906-read ; referred to the Committee on Coast Defenses and ordered to be printed."

Annual report of the Postmaster General : hearing before the Subcommittee on Federal Services, Post Office, and Civil Service of the Committee on Governmental Affairs, United States Senate, One Hundred First Congress, second session, April 27, 1990.

Includes bibliographical references.

U.S. government environmental datafiles & software : microcomputers & mainframes.

"3/94"--P [4] of cover.

Biology and Management of the American Shad and Status of the Fisheries, Atlantic Coast of the United States, 1960

This paper summarizes current information on the American shad, Alosa sapidissima, and describes the species and its fishery. Emphasis is placed on (1) life history of the fish, (2) condition of the fishery by State and water areas in 1960 compared to 1896 when the last comprehensive description was made, (3) factors responsible for decline in abundance, and (4) management measures. The shad fishery has changed little over the past three-quarters of a century, except in magnitude of yield. Types of shad-fishing gear have remained relatively unchanged, but many improvements have been made in fishing techniques, mostly to achieve economy. In 1896 the estimated catch was more than 50 million pounds. New Jersey ranked first in production with about 14 million pounds, and Virginia second with 11 million pounds. In 1960 the estimated catch was slightly more than 8 million pounds. Maryland ranked first in production with slightly more than 1.5 million pounds, Virginia second with slightly less than 1.4 million pounds, and North Carolina third with about 1.3 million pounds. Biological and economic factors blamed for the decline in shad abundance, such as physical changes in the environment, construction of dams, pollution, over-fishing, and natural cycles of abundance, are discussed. Also discussed are methods used for the rehabilitation and management of the fishery, such as artificial propagation, installation of fish-passage facilities at impoundments, and fishing regulations. With our present knowledge, we can manage individual shad populations; but, we probably cannot restore the shad to its former peak of abundance.

Nutrient enrichment is related to two facets of beta diversity for stream invertebrates across the united states

Beta diversity, the spatial or temporal variability of species composition, is a key concept in community ecology. However, our ability to predict the relative importance of the main drivers of beta diversity (e. g., environmental heterogeneity, dispersal limitation, and environmental productivity) remains limited. Using a comprehensive data set on stream invertebrate assemblages across the continental United States, we found a hump-shaped relationship between beta diversity and within-ecoregion nutrient concentrations. Within-ecoregion compositional dissimilarity matrices were mainly related to environmental distances in most of the 30 ecoregions analyzed, suggesting a stronger role for species-sorting than for spatial processes. The strength of these relationships varied considerably among ecoregions, but they were unrelated to within-ecoregion environmental heterogeneity or spatial extent. Instead, we detected a negative correlation between the strength of species sorting and nutrient concentrations. We suggest that eutrophication is a major mechanism disassembling invertebrate assemblages in streams at a continental scale.