Status And Trends of Wetlands
Status And Trends of Wetlands
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This indicates that 98 percent of all wetland losses in the conterminous United States between 1986 and 1997 were to freshwater wetlands.
The mean size of freshwater wetlands sampled indicated that freshwater forested wetlands were the largest type (Table 5). The mean size for forested wetlands was 21 acres (9 ha). Freshwater shrub and emergent wetlands were 8 acres (3. 2 ha) and 7 acres (2. 8 ha), respectively. The mean size of freshwater ponds was 1-2 acres (0. 4-0. 8 ha).
Freshwater Lakes an...d Reservoirs Deepwater lakes and reservoirs showed a modest increase, with a net gain of 116, 400 acres (47, 100 ha). The rate of lake and reservoir creation declined 43 percent from the 1970s to 1980s. The reason for this decline is not known.
Table 5. Mean size and range of freshwater wetlands as they appeared within the sample units in 1997.
Freshwater Wetland Category Mean size (acres) Range (acres) 1 Freshwater forest 21
What to read after Status And Trends of Wetlands?
You can find similar books in the "Read Also" column, or choose other free books by U.S. Fish And Wildlife Service to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This indicates that 98 percent of all wetland losses in the conterminous United States between 1986 and 1997 were to freshwater wetlands.
The mean size of freshwater wetlands sampled indicated that freshwater forested wetlands were the largest type (Table 5). The mean size for forested wetlands was 21 acres (9 ha). Freshwater shrub and emergent wetlands were 8 acres (3. 2 ha) and 7 acres (2. 8 ha), respectively. The mean size of freshwater ponds was 1-2 acres (0. 4-0. 8 ha).
Freshwater Lakes an...d Reservoirs Deepwater lakes and reservoirs showed a modest increase, with a net gain of 116, 400 acres (47, 100 ha). The rate of lake and reservoir creation declined 43 percent from the 1970s to 1980s. The reason for this decline is not known.
Table 5. Mean size and range of freshwater wetlands as they appeared within the sample units in 1997.
Freshwater Wetland Category Mean size (acres) Range (acres) 1 Freshwater forest 21
What to read after Status And Trends of Wetlands?
You can find similar books in the "Read Also" column, or choose other free books by U.S. Fish And Wildlife Service to read onlineMoreLess
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