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Characterization of Ecosystems Exposure to Environmental Stressors: Development of Landscape Indicators for the Chihuahuan Desert

PUBLICATIONS

1993. Cluster and principal component analysis of soil sites along a transect. Soil Survey Horizons 34: 39-60. (M. H. Nash, L. A. Daugherty and W. G. Whitford)

1994. Desert-dwelling small mammals as granivores: intercontinental variations. Aust. J. Zool. 42: 543-555. (G. I. H. Kerley and W. G. Whitford)

1994. Effects of plant size and water relations on gas exchange and growth of the desert shrub, Larrea tridentata. Oecologia 97: 171-178. (Franco, A. C., A. G. deSoyza, R. A. Virginia, J. F. Reynolds and W. G. Whitford)

1995. Assessing the quality of rangeland soils: challenges and opportunities. J. Soil and Water Conservation 50:237-242. (J. E. Herrick and W. G. Whitford)

1995. Desertification: Implications and limitations of the ecosystem health metaphor. pp. 273-292. In Rapport D. J., C. L. Gaudet and P. Calow. Evaluating and Monitoring the Health of Large-Scale Ecosystems. NATO ASI Series Springer-Verlag, Berlin (Whitford, W. G.)

1995. Variability in soils and vegetation associated with harvester ant (Pogonomyrmex rugosus) nests on a Chihuahuan Desert watershed. Biol. Fertil. Soils. 20: 169-173. (W. G. Whitford and R. DiMarco)

1995. Subterranean termites: regulators of soil organic matter in the Chihuahuan Desert. Biol. and Fertil. Soils. 19: 15-18. (M. H. Nash and W. G. Whitford)

1995. Field simulation of wet and dry years in the Chihuahuan Desert: soil moisture, N mineralization and ion-exchange resin bags. Biol. Fertil. Soils 20: 137-146. (F. M. Fisher and W. G. Whitford)

1995. Diversity, spatial variability, and functional roles of invertebrates in desert grassland ecosystems. pp.152-195. In: McClaran, M. and T. Van Devender. Desert Grasslands. University of Arizona Press. (W. G. Whitford, G. S. Forbes and G. I. Kerley)

1995. The intersection of ecosystem and biodiversity concerns in the management of rangelands. pp. 72-79. In West, N. E. (ed). Biodiversity on Rangelands. College of Natural Resources, Utah State University, Logan, UT (West, N. E. and W. G. Whitford)

1995. Persistence of desertified ecosystems: explanations and implications. Environmental Monitoring and Assessment 37: 319-332. (Whitford, W. G., G. Martinez-Turanzas and E. Martinez-Meza)

1996. Evaluating ecosystem health: Opportunities for GIS. pp. 408-413. In Heit, M., H. D. Parker and A. Shortreid. GIS Applications in Natural Resources 2. GIS World Books, Ft. Collins, CO (Rapport, D. J., W. G. Whitford and K. Korporal)

1996. The importance of the biodiversity of soil biota in arid ecosystems. Biodiversity and Conservation 5:185-195. (W. G. Whitford)

1996. Condition of New Mexico Rangelands derived from multi-year AVHRR imagery and associated spatial variables. Proceedings of the 11th Conference and Workshop on Applied Geologic Remote Sensing (Lancaster, J., T. Wade, T. Minor, W. G. Whitford and K. Bruce Jones)

1996. Morphological variation in creosotebush Larrea tridentata affects ecosystem properties. pp. 195-198. In Barrow, J. R., E. D. McArthur, R. E. Sosebee and R. J. Tausch. Proceedings: Shrubland Ecosystem Dynamics in a Changing Environment. General Technical Report INT-GTR-338, Ogden, UT (Whitford, W. G., E. Martinez-Meza and A. G. deSoyza)

1996. Effects of summer drought on water relations, physiology and growth of large and small plants of Prosopis glandulosa and Larrea tridentata. pp. 220-223. In Barrow et al. Shrubland Ecosystem Dynamics. USFS INT-GTR-338, Ogden, UT (deSoyza, A. G., W. G. Whitford, R. A. Virginia and J. A. Reynolds)

1996. Time series satellite data to identify vegetation responses to stress as an indicator of ecosystem health. pp. 256-261. In Barrow et al. Shrubland Ecosystem. USFS-GTR-223, Ogden, UT. (Lancaster, J. R., D. Mouat, R. Kuehl, W. Whitford and D. Rapport)

1996. Soil and litter microarthropod populations from two contrasting ecosystems in semi-arid eastern Australia. J. Arid Environments 32:329-346. (Noble, J. C., W. G. Whitford, M. Kaliszweski)

1996. Stemflow, throughfall and channelization of stemflow by roots in three Chihuahuan Desert shrubs. J. Arid Environments 32:271-288. (Martinez-Meza, E. and W. G. Whitford)

1996. High foliar nitrogen in desert shrubs: an important ecosystem trait or defective desert ecology. Ecology 77:1728-1737. (Killingbeck, K. T. and W. G. Whitford)

1996. Effects of plant size on photosynthesis and water relations in the desert shrub Prosopis glandulosa (Fabaceae). American J. Botany 83:99-105. (deSoyza, A. G., A. C. Franco, R. A. Virginia, J. F. Reynolds and W. G. Whitford)

1997. Mechanisms for the keystone status of kangaroo rats: graminivory rather than granivory. Oecologia 111: 422-428. (Kerley, G. I. H., W. G. Whitford and F. R. Kay)

1997. Analysis of desert plant community growth patterns with high temporal resolution satellite spectra. Journal of Applied Ecology 34: 418-432. (Peters, A. J., M. D. Eve, E. H. Holt and W. G. Whitford)

1997. Sensitivity testing of indicators of ecosystem health. Ecosystem Health 3: 44-53. 237. (deSoyza, A. G., W. G. Whitford and J. E. Herrick)

1998. Monitoring Changes in Stressed Ecosystem Using spatial patterns of ant communities. Env. Mon. Ass. 51:201-210. (Nash, Maliha S., Walter G. Whitford, Justin Vanzee and Kris Havstad)

1998. Early warning indicators of desertification: examples of tests in the Chihuahuan Desert. Journal of Arid Environments 39: 101-112. (deSoyza, A. G., W. G. Whitford, J. E. Herrick, J. W. Van Zee and K. M. Havstad)

1998. Contribution of pits dug by goannas (Varanus gouldii) to the dynamics of banded mulga landscapes in eastern Australia. Journal of Arid Environments. 40:453-457. (Whitford, W. G.)

1998. Changes in mass and chemistry of plant roots during long-term decomposition on a Chihuahuan Desert watershed. Biology and Fertility of Soils 26: 16-22. (Mun, H. T. and W. G. Whitford)

1998. Vegetation and animal indicators of rangeland health. Environmental Monitoring and Assessment 51: 179-200. (Whitford, W. G., A. G. deSoyza, J. W. Van Zee, J. E. Herrick and K. M. Havstad)

1999. Livestock activity and Chihuahuan Desert annual plant communities: boundary analysis of disturbance gradients. Ecological Application 9(3) 814-823. (Nash, Maliha S., Walter G. Whitford, Amreta deSoyza and Justin Vanzee)

1999. Soil microarthropods as indicators of exposure to environmental stress in Chihuahuan Desert rangelands. Biol. Fertil. Soils 28:121-128. (Kay, F. R., H. M. Sobhy and W. G. Whitford)

1999. Effects of repeated drought on soil microarthropod communities in the northern Chihuahuan Desert. Biol. Fertil. Soils. 28:117-120. (Whitford, W. G. and H. M. Sobhy)

1999. Ants as indicators of exposure to environmental stressors in North American desert grasslands. Environmental Monitoring and Assessment 54:143-171. (Whitford, W. G., J. Van Zee, M. S. Nash, W. E. Smith and J. E. Herrick)

1999. Biopedturbation by mammals in deserts: a review. Journal of Arid Environments. Journal of Arid Environments 41: 203-220. (Whitford, W. G. and F. R. Kay)

1999. Spatial and temporal variability in foraging intensities of subterranean termites in desertified and relatively intact Chihuahuan Desert ecosystem. Applied Soil Ecology 12: 149-157. (Nash, M. H., J. Anderson and W. G. Whitford)

1999. Potential dispersal of seeds as nest material by the Cactus Wren. Southwestern Naturalist. In Press. (Milton, S. J., W. R. J. Dean, G. I. H. Kerley, M. T. Hoffman and W. G. Whitford)

1999. Diversity of arthropod responses to host-plant water stress in a desert ecosystem in southern New Mexico. American Midland Naturalist 142: 281-290. (Schowalter, T. D., D. C. Lightfoot and W. G. Whitford)

1999. Seasonal and diurnal activity patterns in ant communities in a vegetation transition region of southeastern New Mexico (Hymenoptera: Formicidae). Sociobiology 34: 477-491. (Whitford, W. G.)

1999. Effects of habitat characteristics on the abundance and activity of subterranean termites in arid southeastern New Mexico (Isoptera). Sociobiology 34:493-504. (Whitford, W. G.)

1999. Using resistance and resilience measurements for 'fitness' tests in ecosystem health. Journal of Environmental Management 57: 21-29. (Whitford, W. G., D. J. Rapport and A. G. deSoyza)

1999. Applying satellite imagery to triage assessment of ecosystem health. Environmental Monitoring and Assessment 54: 205-227. (Eve, M. D., W. G. Whitford and K. M. Havstad)

1999. How ecosystems respond to stress: common properties of arid and aquatic systems. Bioscience 49: 193-203. (Rapport, D. J. and W. G. Whitford)

1999. Comparison of ecosystem processes in the Nama-karoo and other deserts. pp. 291-302. In Dean, W. R. J. and S. J. Milton (eds.). The Karoo: Ecological Patterns and Processes. Cambridge University Press. Cambridge, UK. (W. G. Whitford)

2000. Keystone arthropods as webmasters in desert ecosystems. pp. 25-42 In Coleman, D. C. and P. F. Hendrix (eds.). Invertebrates as Webmasters in Ecosystems. CABI Publishing, Wallingford, Oxon, UK. (W. G. Whitford)

2000. Multivariate characterization of perennial vegetation in the northern Chihuahuan Desert. Journal of Arid Environments 44: 305-325. (Johnson, A. R., S. J. Turner, W. G. Whitford, A. G. deSoyza and J. W. Van Zee)

2000. Microbial diversity and activity of disturbed soil in the northern Chihuahuan Desert. Biology and Fertility of Soils 32: 243-249. (Liu, X., W. C. Lindeman, W. G. Whitford and R. L. Steiner)

2000. Assessing and monitoring the health of western rangeland watersheds. Environmental Monitoring and Assessment 64: 153-166. (deSoyza, A. G., W. G. Whitford, S. J. Turner, J. W. Van Zee and A. R. Johnson)

2000. Ant (Hymenoptera: Formicidae) responses to environmental stressors in the northern Chihuahuan Desert. Environmental Entomology 29: 200-206. (Nash, M. S., W. G. Whitford, J. Van Zee and K. M. Havstad)

2000. Impact of grazing and desertification in the Chihuahuan Desert: Plant communities, granivores and granivory. American Midland Naturalist 144: 78-91. (Kerley, G. I. H. and W. G. Whitford)

2000. Indicators of Great Basin rangeland health. Journal of Arid Environments 45: 289-304. (deSoyza, A. G., J. W. Van Zee, W. G. Whitford, A. Neale, N. Tallent-Hallsell, J. E. Herrick and K. M. Havstad)

2001. Field soil aggregate stability kit for soil quality and rangeland health evaluations. Catena 44: 27-35. (Herrick, J. E., W. G. Whitford, A. G. deSoyza, J. W. Van Zee, K. M. Havstad, C. A. Seybold and M. Walton)

2001. Invertebrates: their effects on the properties and processes of desert ecosystems. pp. 333-356. In Prakash, I. (ed.) Ecology of Desert Environments. Scientific Publishers, Jodhpur, India. (Whitford, W. G.)

2001. Establishment and effects of establishment of creosotebush, Larrea tridentata, on a Chihuahuan Desert watershed. Journal of Arid Enviroments 47: 1-10. (Whitford, W. G., R. Nielson and A. G. deSoyza)

2001. Nutrient resorption in shrubs growing by design, and by default in Chihuahuan Desert arroyos. Oecologia 128: 351-359. (Killingbeck, K. T. and W. G. Whitford)

2001. Ants as biological indicators for monitoring changes in arid environments: Lessons for monitoring protected areas. pp. 105-121. In Research and Management Options for Protected Areas. Proceedings of the First International Symposium and Workshop on Arid Zone Environments. Environmental Research and Wildlife Development Agency, Abu Dhabi, United Arab Emerites. (Nash, M. S. and W. G. Whitford)

2002. Presence/absence of a keystone species as an indicator of rangeland health. Journal of Arid Environments. 50: 513-519. (Krogh, S.N., M. S. Zeisset, E. Jackson and W. G. Whitford)

2002. Graminivory by Dipodomys ordii and Dipodomys merriami on four species of perennial grasses. The Southwestern Naturalist. 47: 276-281. (Sipos, M. P., M. C. Andersen, W. G. Whitford and W. R. Gould)

2003. Soil Microtopography on Grazing Gradients in Chihuahuan Desert Grasslands. Journal of Arid Environment. 55: 181-192. (Maliha S. Nash, Erik Jackson, and Walter G. Whitford)

In Press. Effects of Intense, Short-duration Grazing on Microtopography in a Chihuahuan Desert Grassland. Journal of Arid Environment. (Maliha S. Nash, Erik Jackson, and Walter G. Whitford)

Presentations/Posters

Annual plant vegetation boundaries on disturbance gradients in Chihuahuan Desert rangelands (preliminary results). Maliha S. Nash. Sixth Annual Friends of the Jornada Symposium, May 23, 1996, Las Cruces, NM.

Spatial variability of ant communities following mesquite removal in winter grazed plots at the Chihuahuan Desert. Maliha S. Nash. Third-Emap Research Symposium April 8-11, 1997, Albany, NY.

Annual plant vegetation boundaries on disturbance gradients in Chihuahuan Desert rangelands. Maliha S. Nash. International Symposium and Workshop "Combating Desertification: Connecting Science with Community Action." May 12-16, 1997, Tucson, Arizona.

Characterization, monitoring, and assessment of arid rangeland in the Jornada Desert, Las Cruces, NM, USA. Maliha S. Nash. Jordan University of Science and Technology, Irbid, Jordan. Dec. 1997.

Small Mammals on the Multiple Stressor Experiment: Spatial Analysis of Dipodomys ordii and Neotoma spp Use of Selected Plots, 1993-1997. Fenton R. Kay, Maliha S. Nash, Phillip U. Alkon, Walter G. Whitford, Eighth Annual Jornada Symposium, July 16, 1988. Las Cruces, NM.

Comparison of ANOVA and Kriging in detection ant responses to environmental stressors. Maliha S. Nash, George Flatman, Walter Whitford and Kris Havstad. North American Council on Geostatistics, July 1998. St. John College, Santa Fe, NM.

Geostatistical analyses for ant abundance (Conomyrman insana) as a biological indicator. Maliha S. Nash, Walter Whitford and George Flatman. EPA Conf. On Env. Stat. and Info. May 10-13, 1999. SugarLoaf Conf. Cntr. Philadelphia, Pennsylvania.

Ants as Biological Indicators for Monitoring Changes in Arid Environments: Lessons for Monitoring Protected Areas. Maliha S. Nash and Walter G. Whitford. 1st International Symposium and Workshop on Arid Zone Environment Research and Management options for protected Areas. January 23 - 25, 2000, Abu Dhabi, UAE.

Geostatistical analyses for ant abundance (Conomyrman insana) as a biological indicator. Maliha S. Nash, Walter Whitford, and George Flatman. 10th Annual Jornada Symposium, Jornada Basin Long-Term Ecological Research Program. July 13, 2000, Las Cruces, NM.

Microtopography Indices on Grazing Gradients in Chihuahuan Desert Grasslands. Maliha S. Nash, Erik Jackson and Walter G. Whitford, to be presented in the Jornada Symposium, Las Cruces, NM. July 11, 2002.

Effects of Intense, Short-Duration Grazing on Microtopography in a Chihuahuan Desert Grassland. Maliha S. Nash, Erik Jackson and Walter G. Whitford to be presented by Dr. Whitford at the Ecological Society Meeting, Tucson, Arizona, August 4 - 9, 2002.

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