目前NOAA更新了墨西哥灣的各項資訊並製作成圖。可以在以下的連結中, 選擇欲覽類別, 可有生物環境, 魚類遷徙, 植物分布, 生態區位狀態。基本的地形預覽, 格局, 空照/簡單色彩也可以選擇。
我找了土地利用與生態系統分布圖~
這張圖顯示出海岸以Palustrine Emergent Wetland (淺螢光粉紅)與 Estuarine Emergent wetland (紫粉紅) 為主, 內陸在Mississippi River附近的棕色部份, 表示cultivated land, 這些地區則以各項農業開發為主, 主要產出包括玉米, 甘蔗,... 等。
Palustrine 指的是
All nontidal wetlands dominated by trees, shrubs, persistent emergents, emergent mosses, or lichens, and all such wetlands that occur in tidal areas where salinity stemming from ocean-derived salts is below 0.5ppt (0.5 mg salt in 1 L water, considered as freshwater).
It also includes wetlands lacking such vegetation but with all of the following characteristics:
1) areas less than 8ha
2) lack of active water-formed or bedrock shoreline features
3) Water depth in the deepest part of the basin of less than 2 m at low water
4) salinity stemming from ocean-derived salts of less than 0.5 ppt.
Estuarine 指的是
Deepwater tidal habitats and adjacent tidal wetlands that are usually semi-enclosed by land but have open, partially obstructed, or sporadic access to the ocean and in which ocean water is at least occasionally diluted by freshwater runoff from the land.
Note that there is no Lacustrine here. Lacustrine is
Wetlands and deepwater habitats with all of the following characteristics:
1) situated in a topographic depression or a dammed river channel;
2) lacking trees, shrubs, persistent emergents, emergent mosses, or lichens with greater than 30% areal coverage
3) total area in excess of 8 ha.
Similar wetland and deepwater habitats totaling less than 8ha are also included in the lacustrine system when an active water-formed or bedrock shoreline feature makes up all or part of the boundary or when the depth in the deepest part of the basin exceeds 2 m at low water.
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