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Historical Submerged Aquatic Vegetation (SAV) Distributions in the MBNEP Area - 1940, 1955, 1966

Dataset extent

Historic black and white aerial photographs of coastal Alabama (Mobile Bay and adjacent waters) from 1940, 1955, and 1966 were digitized and georeferenced using Blue Marble Geographic Transformer version 5.1. Outlines of distinguishable submerged aquatic vegetation (SAV) signatures in the aerial photography were digitized in a GIS environment, supplemented by visual examination of the photographic prints. ESRI polygon coverage of SAV beds was created in ArcView version 3.2.

Data and Resources

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Additional Info

Field	Value
Author	Mimi Tzeng
Maintainer	data@disl.org
Last Updated	July 22, 2022, 22:52 (UTC)
Created	July 22, 2022, 22:52 (UTC)
ISO.author	Barry A. Vittor and Associates, Inc.
ISO.custodian	Roberta Swann <mbnep@mobilebaynep.com>
ISO.pointOfContact	Mimi Tzeng <metadata@disl.org>
ISO.principalInvestigator	Barry A. Vittor and Associates, Inc.
ISO.publisher	Mobile Bay National Estuary Program
Place Keywords	Dauphin Island Sea Lab, DISL, Mobile Bay National Estuary Program, MBNEP, Alabama, Mobile Bay, Mississippi Sound, Weeks Bay, Perdido Bay, Mobile County, Baldwin County
Theme Keywords	submerged aquatic vegetation, SAV, coastal habitats
Use Constraints	Acknowledgment of the Dauphin Island Sea Lab (DISL), Mobile National Estuary Program (MBNEP), and Barry A. Vittor and Associates, Inc. is required in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of these data. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in the metadata document. These data are not legal documents and are not to be used as such.
spatial	{ "type": "Polygon", "coordinates": [ [ [ -88.347, 30.705 ], [ -87.365, 30.705 ], [ -87.365, 30.216 ], [ -88.347, 30.216 ], [ -88.347, 30.705 ] ] ] }