An Environmental History of the Middle Rio Grande Basin
CHAPTER 7 SUMMARY, CONCLUSIONS, AND CONSIDERATIONS SUMMARY Environmental History This study of the environmental history of the Middle For more than 450 years the ecosystems of the Middle Rio Grande Basin, which began in June 1994, is part of a Rio Grande Basin have evolved dynamically with the in- 5-year, multidisciplinary study under the auspices of the terrelated vagaries of climate, land forms, soils, fauna, USFS Rocky Mountain Forest and Range Experiment Sta- flora, and most importantly, human activities. Various tion, Albuquerque. The goal of the parent study is land use practices have caused an array of environmental problems. Activities such as grazing, irrigation farming, [t]o develop, synthesize, and apply new knowl- logging, and constructing flood control features, combined edge to aid in understanding processes, interac- with climatic fluctuations, have produced changes in tions, and sociocultural uses of upland and ri- stream flow-morphology, groundwater levels, topsoils, parian ecological systems for sustaining diverse, biotic communities, and individual species. Indigenous productive, and healthy plant, animal, and hu- human populations have, in turn, been impacted by modi- man populations and associated natural re- fications in these resources. These processes, impacts, and sources in the Rio Grande Basin (Finch and changes were discussed in Chapters 3–5. A summary of Tainter 1995: 1). this eco-cultural history is presented here. Droughts, floods, severe cold, and deep snow influ- This larger, ongoing study is based on the primary the- enced or directly impacted many activities, notably travel, sis that all ecosystems are anthropogenic to some extent agriculture, livestock raising, warfare, hunting, and gath- and cannot be understood without examining the role of ering during the historic period (A.D.
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