Plant-Animal Interactions

Background Information on Plants

Review this presentation and notes if the following terms are note familiar and clear: Grasses, Grass-like, Forbs, Shrubs, Herbaceous, Browse, Mast, Annuals, Biennials, Perennials, Native plants, Introduced plants, Naturalized plants, Suffrutescent, Cool Season plants, and Warm Season plants.

PresentationPlant Basics
__» Background Notes on Plant Basics (PDF)

Background VideoGrass Growth Stages & Grazing Impacts (University of Wyoming)

Plant Response to Disturbance

Plant Morphology affecting Response to Disturbance
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Plant Physiology affecting Response to Disturbance –
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Plant Response to Grazing
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♦  Plant Response to Fire
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~~~~Readings
Background Reading– Understanding Grass Growth (Waller et al. 1985)
Supplemental Website on Basic Grass Growth (Oregon State University)
Required Reading – Range Readiness (Fraser 2003)
Required Reading – Carbohydrate Reserves: What you learned may be wrong. (Burritt & Reid 2012)
Required Reading – Factors Influencing Grazing Tolerance

~~~~ Interesting Case about Grazing in Ecosystems: Point – Counterpoint
How to fight desertification and reverse climate change. (TED Talk by Allan Savory)
The Savory Method Can Not Green Deserts or Reverse Climate Change (Counterpoint Paper)

~~~TEST 1 on Material and Readings above.

Plant Nutritive Value & Toxicity

Plant Nutritive Value
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Toxic Rangeland Plants
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~~~~Readings
Required Reading – Why Range Forage Quality Changes. (Lyons et al. 1999)
Required Video  – “The Challenge” (Utah State Univ. Extension)
Required Reading – Why Animals Die from Eating Poisonous Plants? (Burritt 2012)

Range Animal Digestion & Nutrition

Animal Foraging Characteristics
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Herbivore Classification
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♦  Basic Principles of Rangeland Animal Nutrition
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~~~~ Readings
→  Required Reading – Grazing Behavior of Livestock and Wildlife. (Shipley 1999)
→  Required Reading – What Range Herbivores Eat–and Why (Lyons et al. 1999)

Meeting Demand & Forage Intake

Animal Demand
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Matching Supply & Demand
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~~~~ Readings
Required Reading – Nutritional Value of Range Forage for Livestock (Ruyle 1993)
Required Reading – Matching the Cattle Production Cycle to Forage Availability on the High Plains (Steffens et al. 2015)

~~~TEST 2 covers all Material and Readings above.