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This dataset contains an analysis of the change in seagrass extent over all available seagrass coverage maps within each area, including historical Maine DMR seagrass coverage maps, but only for areas where recent Maine DEP seagrass surveys are available. |
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This dataset contains an analysis of the change in seagrass extent over all available seagrass coverage maps within each area, including historical Maine DMR seagrass coverage maps, but only for areas where recent Maine DEP seagrass surveys are available. |
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The change analysis was conducted by the State of Maine Department of Environmental Protection (MEDEP) with datasets from the MEDEP and Maine Department of Marine Resources. |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Maine Department of Environmental Protection (MEDEP), Bureau of Water Quality, Division of Environmental Assessment, Marine Vegetation Mapping Program produces regional seagrass distribution maps on an annual basis, and both MEDEP and the Maine Department of Marine Resources have historically mapped seagrass distribution. The change in seagrass coverage was assessed for extent only (i.e. percent cover changes were not included in the analysis) by comparing all existing seagrass coverage maps to identify the four extent change type categories: 1) Persistent Extent: Areas of seagrass presence in all surveys, recent and historical; 2) New Extent: Areas of seagrass presence in the most recent survey, but absence in all historical surveys; 3) Lost Extent: Areas of seagrass absence in the most recent survey, but presence in any historical survey; and 4) Dynamic Extent: Areas of seagrass presence in the most recent survey, but absence in some historical survey(s) (e.g., beds that have recovered from a previous loss, and beds that have established semi-recently but before the most recent survey). In areas where no recent Maine DEP seagrass surveys are available, no analysis was conducted.</SPAN></P></DIV></DIV></DIV> |
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| title:
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Seagrass_Change_Analysis |
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["MaineDEP","Maine Department of Environmental Protection","water","coastal","eelgrass","environmental protection","Maine coastal waters","seagrass","submerged aquatic vegetation","Zostera marina","Ruppia maritima","MaineGeoLibrary","environment","oceans","biota","change analysis"] |
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en-US |
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150000000 |
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