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Week 1 Notes

by: Brittany Randall

Week 1 Notes REWM2000

Brittany Randall

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This has lecture materials.
Principles of Rangeland Management
J. Rodgers
Class Notes
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This 2 page Class Notes was uploaded by Brittany Randall on Thursday October 6, 2016. The Class Notes belongs to REWM2000 at University of Wyoming taught by J. Rodgers in Fall 2016. Since its upload, it has received 4 views. For similar materials see Principles of Rangeland Management in Rangeland Ecosystem Science at University of Wyoming.

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Date Created: 10/06/16
8/29/2016 Just introduced himself and took roll call. Talked over the schedule and what is to be expected in the class 8/31/2016- Chapter 1 1. Rangeland a. E.J. Dykterhuis- All areas that can and do support natural plant communities primarily of value as grazing or browsing for domestic and wild herbivores b. HPH- Uncultivated land that will provide the necessities of life for grazing and browsing animals i. Includes all natural grassland and shrub land plus most forest, other deserts, grazed crop aftermath, pasturelands etc. 1. Pastureland- grazed lands subject to periodic cultural practices, such as plowing, mowing, seeding, fertilizing c. Negative definitions- those areas of the world that are not barren deserts, farmed or covered by bare soil, rock, ice or concrete d. Most of the world’s rangelands are used and managed by use of herded grazing animals or free-ranging wildlife 2. Range management a. The manipulation of rangeland components to obtain the optimum combination of goods and services for society on a sustained basis b. Protection and enhancement of the soil and vegetation complex c. Maintaining or improving the output of consumable range products (such as meat, fiber, wood, water and wildlife) d. Deals with plant and animal interactions e. Holistic i. deals with all the resources together simultaneously f. Both a science and an art g. Born/developed in the western US in the early 20 century 3. RM is based on 5 basic concepts a. Rangeland is a renewable resource i. As long as it is taken care of and don’t let erosion harm it b. Energy from the sun can be captured by green plants that can only be harvested by a grazing animal i. It’s not productive to harvest it in any other method. c. Rangelands supply humans with food and fiber at very low energy costs i. Doesn’t respond to highly to irrigation or other methods as such. d. Rangeland productivity (potential) is determined by soil, topographic and climatic characteristics e. A variety of “products” can be harvested 4. Range science a. Organized body of knowledge of the ecology of rangelands and their management -art of management- synthesizing all knowledge and understanding of land units so as to manage for productivity and sustainability 5. SRM – Society for range Management a. HQ in Denver b. Http:// c. Email d. Phone 303-986-3309 9/2/2016 1) Importance of rangelands a) Human population i) 8000BC – 1 MILLION ii) 1AD -250 MILLION iii) 1850 – 1BILLION iv) 1930- 2 BILLION v) 1976 – 4 BILLION vi) 1993 – 5.6 BILLION vii)2001- 6.1 BILLION viii) 2011- 7 BILLION ix) ?? – 8 BILLION x) Predicted to not stabilize below 11 billion xi) We will require food and water and housing xii)We will demand recreation, wildlife, open space, wilderness xiii) Food shortages are common in many developing countries currently (1) Aggravated by drought (a) By war (b) By other population disruptions (2) Contrast with food surpluses in US 2) Land area – in USA a) How much rangeland? – 40% b) How much land is grazed? – 50% c) How much could be Grazed? - 61% d) See table HPH 1.4 e) World wide i) Rangeland contributes about 70% of feed needs for domestic animals (95% for Wildlife) 3) Production of animal products a) See HPH table 1.5 and 1.6 b) Beef i) US is #1 (20%) (7% of cattle) (1) India has most cows (16%) -5 % of beef c) Mutton i) China is #1 (20%) (11% of sheep) d) Wool i) Australia is #1 (30%) (11% of sheep) e) Wildlife i) Increasing economic and esthetic value (1) Considerable ranch income from hunting leases


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