Construction of Sand Shinnery Oak Communities of the Llano Estacado: Animal Disturbances, Plant Community Structure, and Restoration

In land restoration it is imperative to study the potential role of disturbances, biotic or abiotic, that may provide sites for colonization by specific plants. Disturbances can alter community composition by removing species or allowing others to become established. In communities where animal-generated disturbances open sites for seedling establishment, animals may have important indirect effects on several aspects of plant community structure. Animal disturbances in Quercus havardii communities of western Texas appear to open sites for colonization by herbaceous species. These animal disturbances vary in spatial distribution, density, and abiotic and biotic characteristics. The abundance of herbaceous plant seedlings is positively related to bare ground and the number of distinct disturbances. Thus, the density and the spatial distribution of these disturbances may be expected to have an important influence on the abundance and dispersion of plant species. Therefore, successful restoration efforts of sand shinnery oak communities and other similar habitats must consider the effects of animal disturbances and the role of plant-animal and plant-soil microbe interactions on plant community composition and the maintenance of plant species diversity.

[1]  Christian Floret,et al.  Restoration and Rehabilitation of Degraded Ecosystems in Arid and Semi‐Arid Lands. I. A View from the South , 1993 .

[2]  R. Hobbs,et al.  Disturbance, Diversity, and Invasion: Implications for Conservation , 1992 .

[3]  M. Allen,et al.  Re-formation of mycorrhizal symbioses on Mount St Helens, 1980–1990: interactions of rodents and mycorrhizal fungi , 1992 .

[4]  S. Dhillion.  Evidence for host-mycorrhizal preference in native grassland species , 1992 .

[5]  S. Milton,et al.  Patch disturbances in arid grassy dunes : antelope, rodents and annual plants , 1991 .

[6]  J. Macmahon,et al.  Alpine Seedling Establishment: The Influence of Disturbance Type , 1990 .

[7]  W. Whitford,et al.  Factors affecting annual plants assemblages on banner-tailed kangaroo rat mounds , 1990 .

[8]  E. Allen,et al.  The restoration of disturbed arid landscapes with special reference to mycorrhizal fungi , 1989 .

[9]  Nancy Huntly,et al.  Pocket gophers in ecosystems: patterns and mechanisms , 1988 .

[10]  J. Macmahon,et al.  Direct VA mycorrhizal inoculation of colonizing plants by pocket gophers (Thomomys talpoides) on Mount St. Helens. , 1988 .

[11]  D. Gibson.  The maintenance of plant and soil heterogeneity in dune grassland , 1988 .

[12]  S. Collins.  INTERACTION OF DISTURBANCES IN TALLGRASS PRAIRIE: A FIELD EXPERIMENT' , 1987 .

[13]  H. Mooney,et al.  SPATIAL VARIATION IN INOCULUM POTENTIAL OF VESICULAR‐ARBUSCULAR MYCORRHIZAL FUNGI CAUSED BY FORMATION OF GOPHER MOUNDS , 1987 .

[14]  J. Macmahon,et al.  DISPERSAL AGENTS OF VESICULAR-ARBUSCULAR MYCORRHIZAL FUNGI IN A DISTURBED ARID ECOSYSTEM , 1987 .

[15]  P. White,et al.  The Ecology of Natural Disturbance and Patch Dynamics , 1986 .

[16]  Richard Mark Hansen,et al.  Flora and fauna associated with prairie dog colonies and adjacent ungrazed mixed-grass prairie in western South Dakota. , 1986 .

[17]  W. Sousa.  The Role of Disturbance in Natural Communities , 1984 .

[18]  V. E. Jones.  Effects of tebuthiuron on a sand shinnery oak (Quercus havardii) community , 1982 .

[19]  E. Allen.  Water and nutrient competition between Salsola kali and two native grass species (Agropyron smithii and Bouteloua gracilis) , 1982 .

[20]  R. D. Pettit.  Effects of picloram and tebuthiuron pellets on sand shinnery oak communities. , 1979 .

[21]  P. Grubb.  THE MAINTENANCE OF SPECIES‐RICHNESS IN PLANT COMMUNITIES: THE IMPORTANCE OF THE REGENERATION NICHE , 1977 .

[22]  W. Platt.  The Colonization and Formation of Equilibrium Plant Species Associations on Badger Disturbances in a Tall-Grass Prairie , 1975 .

[23]  P. Test.  Soil moisture depletion and temperature affected by sand shinnery oak (Quercus havardii rydb.) control , 1972 .

[24]  M. Allen,et al.  The interaction of harvester ants and vesicular-arbuscular mycorrhizal fungi in a patchy semi-arid environment: the effects of mound structure on fungal dispersion and establishment , 1993 .

[25]  J. Zak,et al.  Microbial dynamics in arid ecosystems: desertification and the potential role of Mycorrhizae , 1993 .

[26]  A. Fitter,et al.  Ecological specificity of vesicular-arbuscular mycorrhizal associations , 1990 .

[27]  Michael F. Allen,et al.  The ecology of mycorrhizae , 1990 .

[28]  R. C. Anderson,et al.  GROWTH OF LITTLE BLUESTEM (SCHIZACHYRIUM SCOPARIUM) (POACEAE) IN FUMIGATED AND NONFUMIGATED SOILS UNDER VARIOUS INORGANIC NUTRIENT CONDITIONS , 1989 .

[29]  M. Allen.  Re-establishment of VA mycorrhizas following severe disturbance: comparative patch dynamics of a shrub desert and a subalpine volcano , 1988 .

[30]  M. Gilpin,et al.  Restoration Ecology: A Synthetic Approach to Ecological Research , 1988 .

[31]  Orie L. Loucks,et al.  Chapter 5 – Gap Processes and Large-Scale Disturbances in Sand Prairies , 1985 .

[32]  P. Vitousek.  Chapter 18 – Community Turnover and Ecosystem Nutrient Dynamics , 1985 .

[33]  F. Chapin.  Patterns of Nutrient Absorption and Use by Plants from Natural and Man-Modified Environments , 1983 .

[34]  E. Allen.  Germination and Competition of Salsola kali with Native C 3 and C 4 Species Under Three Temperature Regimes , 1982 .

[35]  James A. MacMahon,et al.  Successional Processes: Comparisons among Biomes with Special Reference to Probable Roles of and Influences on Animals , 1981 .

[36]  S. Sivelae,et al.  A comment on the membrane filter technique for estimation of length of fungal hyphae in soil , 1978 .