Management of shallow impoundments to provide emergent and submergent vegetation for waterfowl /
(PC), and above-ground biomass (AGB) revealed partial
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (PC), and above-ground biomass (AGB) revealed partial affect taxon richness of emergent plants within dewatered and forbs had higher seed production during 1992 late- and green-winged teal (A. crecca) occurred most often in and soil disturbance, were effective in providing a variety annuals, and discouraging perennials. PC, AGB, and seed by increasing taxon richness of emergent plants, encouraging decreased, respectively, with tilling, whereas sedges were drawdown timing. drawdown. Most submergent macrophytes were unaffected by drawdowns produced a typical zonation of wetland plants: each soil-moisture zone. Taxon richness of emergent plants Effects of partial drawdowns, drawdown timing, and tilling on flooded zones; forbs in moist zones adjacent to water; and, frequently and cattail was first recorded during spring frequently in tilled areas. Most submergent macrophytes were grasses in upper, drier zones. Seed production of grasses, guadalupensis), with higher PC in tilled plots. Waterfowl highest during 1993 spring drawdown. The majority of grasses in north-central Texas. Vegetation lists, percent cover not affected by tilling, except southern naiad (Najas not affected. Cattail and black willow occurred most not statistically significant, blue-winged teal (A. discors) of vegetation and seeds for a diversity of migrant and plant communities. Gadwall (Anas strepera) and American ponds at the Lewisville Aquatic Ecosystem Research Facility production of forbs and grasses generally increased and sedges, and forbs generally reflected vegetation present in seeds during spring drawdown. Black willow occurred most shallow zones supporting emergent vegetation and seeds. Soil disturbance with rototilling created diversity in ponds sp.), black willow (Salix nigra), and sedges in shallow- submergent macrophytes in deep-flooded zones; cattail (7ypha summer/early-fall drawdown, whereas sedges produced more Therefore, partial drawdowns, variations in drawdown timing, vegetation and seed production for waterfowl were tested in visiting ponds utilized regions according to water depth and was highest in dewatered zones. Drawdown timing did not wigeon (A. americans) were most often observed within deep wintering waterfowl. zones supporting submergent vegetation. Although data were zones, but forb and sedge PC and AGB, and grass AGB, were |
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| Item Description: | "Major subject: Wildlife and Fisheries Sciences". Vita. |
| Physical Description: | xi, 95 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |