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REP40411
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Last modified
8/25/2016 12:29:49 AM
Creation date
11/27/2007 8:43:39 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981028
IBM Index Class Name
Report
Doc Date
12/11/2001
Doc Name
1996 AHR & ARR Vegetation
Annual Report Year
1996
Permit Index Doc Type
HYDROLOGY REPORT
Media Type
D
Archive
No
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increased species numbers in 1996 compared with 1995 (Table 6). This is significant, <br />given the wet spring of 1995 which encouraged germination and growth of numerous <br />ephemerals. The 1985 Reclamation Area closely followed the trend illustrated by the <br />Osgood Sand Reference Area, where species numbers were less than those recorded in <br />1995, but significantly greater than those found in 1994. <br />The 1985 Reclamation Area met the requirements of the species composition success <br />criterion, having seven perennial species with the required relative cover. Four warm <br />season grass species were present in sufficient relative cover. One perennial forb <br />species was present. All species included had the requisite relative importance. <br />The 1986 Reclamation Area met the species composition success criterion for number <br />of warm season grasses. This area lacked a sufficient number of qualifying perennial <br />species, though two native forbs meeting the relative importance criterion were <br />disqualified because they were annual. <br />The 1987 Reclamation Area did not meet the species composition success criterion for <br />number of warm season grasses, falling one short. This area did not have the requisite <br />number of qualifying perennial forbs. As with the 1986 area, the 1987 Reclamation <br />Area lacked the required number of perennial species, though one native forb meeting <br />the relative importance criterion was disqualified because it was annual. <br />As in 1994 and 1995, the Osgood Sand Reference Area would not meet the species <br />composition success criteria. Based on the current success criteria for species <br />composition, the Osgood Sand Reference Area lacks a sufficient number of perennial <br />species and warm season grasses. With a range of growing season characteristics <br />represented in the 1994-1996 time period, it is evident that the current species <br />composition success standard is unrealistic. The standards should be revaluated based <br />on the 1994-1996 sampling data which represent a full range of moisture and growth <br />conditions in this area. It is further recommended that the regulatory agency rethink <br />the exclusion of annual species (particularly forbs) in the analysis of species <br />composition success. As demonstrated in the monitoring for this site, annual species <br />have an important role in the composition of the native and reclaimed vegetation <br />communities. These lifeforms and species may be ephemeral from year to year and <br />opportunistic in their growth mode, but they serve to provide diversity within both the <br />native and revegetated communities, and their role should not be arbitrarily denigrated <br />based on seasonality. <br />i <br />-14- <br />
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