943 resultados para Fisheries--United States--Maps


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Some vols. issued in the congressional series as Senate or House documents.

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Includes indexes.

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Mode of access: Internet.

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This index is designed to inform map users of the various series of maps produced and distributed by the U.S. Geological Survey, and to assist users in selecting and purchasing maps.

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Atlantic Menhaden Brevoortia tyrannus is a commercially and ecologically important forage fish abundant on the Atlantic Coast of the United States. We conducted spatial and temporal analyses of larval Atlantic Menhaden using data collected from two large-scale ichthyoplankton programs during 1977-1987 and 1999-2013 to construct indices of larval abundance and survival over time, evaluate how environmental factors affect early life survival, and examine how larvae are distributed in space to gain knowledge on spawning and larval dispersal. Over time, we found larval abundance to increase, while early life survival declined. Coastal temperature, wind speed, and Atlantic Multidecadal Oscillation were found to potentially explain some of this decline in survival. Over both periods, we found evidence spawning predominantly occurs near shore, from New York to North Carolina, increasing in intensity southwards. While the general spatial patterns were consistent, we observed some localized variation and overall expansion of occupied area by larvae.

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Shows individual plantings and pathways.

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"6 January 1988."

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Covers U.S. Capitol, Capitol Grounds, and surrounding government buildings.

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Covers U.S. Capitol, Capitol Grounds, and surrounding government buildings.

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Shows government buildings and boundaries of Capitol grounds.