2008-04-15_PERMIT FILE - M2008013

• Permit No: M2008013
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/15/2008
• Doc Name: Adequacy Review Response
• From: Riverside Aggregates
• To: DRMS
• Email Name: DEG
• Media Type: D
• Archive: No

Site Type: Rangeland gamy
MLRA: 69 -Upper Arkansas Valley Rolling Plains R069XY006C0
• Long-term prescribed grazin4 with adequate recovery periods following each grazing event and
proper stocking over long periods of time move this plant community toward the Increased Blue
Grama, Buffa/ograss, Galleta; with Cool Season Remnants Plant Community and will eventually
return to the HCPC or associated successional plant community stages assuming an adequate
seed/vegetative source is available. This transition is a slow process, which, may take greater
than 40 years to accomplish.
Red Threeawn, Annuals, Bare Ground Plant Community
This plant community develops with heavy continuous grazing, excessive defoliation by herbivores
and long-term non-use. Red threeawn is the dominant species. Blue grams and/or buffalograss may
persist in localized areas. Annuals such as little annual barley, sixweeks fescue, cheatgrass, kochia
and Russian thistle are present.
Litter levels are extremely low. Erosion is evident where flow paths are continuous. Rills may occur
on steeper slopes. Wind scoured areas may be apparent on knolls or unprotected areas. The
nutrient cycle, water cycle and overall energy flow are greatly impaired. Organic matter/carbon
reserves are greatly reduced. This community is not stable. Desertification is obvious.
Total annual production can vary from 0 to 150 pounds of air-dry vegetation per acre.
The following is the growth curve of this plant community expected during a normal year:
Growth curve number: COti901
Growth curve name: Warm season/cool season co-dominant; MLRA-69; u land fine textured soils.
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
0 0 5 10 20 30 20 10 3 2 0 0
(monthly percentages of total annual growth)
Transitions or pathways leading to other plant communities are as follows:
• Long-term prescribed grazin4 with adequate recovery periods between each grazing event and
proper stocking can eventually move this community back to the Historic Climax Plant Community
or associated successional plant community stages, assuming an adequate seed source is
available. This transition will take a long time (40 to 80 years or more) to achieve.
• Range seeding followed by prescribed grazing may be used as an alternative to convert this plant
community to a Seeded Rangeland community, which can closely resemble the HCPC however,
at a substantial cost.
Oneseed Juniper Plant Community
This plant community is typically found adjacent to a juniper seed source. Invasion of the juniper has
occurred. Lack of fire and long-term non-use accelerate the invasion. Prescribed grazing, brush
management and fire can be used to prevent encroachment.
In higher canopy cover situations, soil erosion will increase. The water cycle is significantly altered
under higher canopies. Infiltration is reduced because of interception of rainfall by the canopy and
runoff is increased.
The following is the growth curve of the dominant species expected during a normal year:
Growth curve number: COti904
Growth curve name: Warm season dominant; MLRA-69; u land fine textured soils.
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
0 0 0 0 15 45 25 15 0 0 0 0
(monthly percentages of total annual growth)
Transitional pathways and/or community pathways leading to other plant communities are as follows:
Technical Guide USDA NRCS
Section IIE 10 Rev. 3/04