fire effects on cavity nesting birds in forest environments

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Fire Effects on Cavity Nesting Birds in Forest Environments. By Melinda Castillo May 6, 2008. Question. How are cavity-nesting bird (CNB) populations impacted by fire and the Healthy Forest Restoration Act of 2003? Which is more beneficial?. Methods. - PowerPoint PPT Presentation

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Page 1: Fire Effects on Cavity Nesting Birds in Forest Environments
Page 2: Fire Effects on Cavity Nesting Birds in Forest Environments

• How are cavity-nesting bird (CNB) populations impacted by fire and the Healthy Forest Restoration Act of 2003? Which is more beneficial?

Page 3: Fire Effects on Cavity Nesting Birds in Forest Environments

Methods

• Reviewed literature and clumped papers into three groups.– Ecological Needs of CNBs – Fire = effects on forest– HFI = effects on forest

Page 4: Fire Effects on Cavity Nesting Birds in Forest Environments

Results—Ecological Needs

• Nest sites– Need dead or dying trees (excavators)– Trees with holes existing holes (non-excavators)

Page 5: Fire Effects on Cavity Nesting Birds in Forest Environments

Results—Ecological Needs

• Forest Composition– Age of trees

• Old trees = natural decay; soft to excavate holes

– Cover• Moderate cover is ideal

Page 6: Fire Effects on Cavity Nesting Birds in Forest Environments

Results—Fire

• Rx is good when done under the right conditions

• Catastrophic wildfire negative impacts for CNB

Page 7: Fire Effects on Cavity Nesting Birds in Forest Environments

Results—HFI

• Thin Forests through cutting and burning– Remove ladder fuels and open up canopy

• Prevention and Response to disease and insect infestations

• Remove chance of catastrophic fire.

Page 8: Fire Effects on Cavity Nesting Birds in Forest Environments

• If the forests are left as they currently are…will have catastrophic fire…populations decrease.– Too much fuel, insect infestations, disease

• CNB Effect– No Nest sites– Open canopy– Potentially no food– Will they make it out??

Page 9: Fire Effects on Cavity Nesting Birds in Forest Environments

• If comply with HFI…– Chance of catastrophic fire

reduced– Canopies opened• Too much canopy-- opened detrimental

– High fuel loads removed• Snags removed

– Populations potentially increase

Page 10: Fire Effects on Cavity Nesting Birds in Forest Environments

• Compliance with HFI will benefit CNB populations.

• Current conditions of forests will be detrimental to CNB if/when catastrophic fire burns through the forest.

• Must understand the needs and responses to habitat alteration for species you are managing.

Page 11: Fire Effects on Cavity Nesting Birds in Forest Environments

• Thanks to Dr. Mannan for suggesting journal articles.