Key Features Of Early Seral Habitats For Wildlife

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Key Features of Early Seral Habitats for Wildlife Joan Hagar USGS-FRESC Matt Lee

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Key Features Of Early Seral Habitats For Wildlife

Transcript of Key Features Of Early Seral Habitats For Wildlife

Page 1: Key Features Of Early Seral Habitats For Wildlife

Key Features of Early Seral Habitats for Wildlife

Joan HagarUSGS-FRESC

Matt Lee

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Matt Lee

Matt Lee

Matt Lee

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Following Natural Disturbance ...

• Structure– Legacy trees and

snags – Open (low tree

density)– Large wood

• Composition– Herbs and Grasses – Shrubs– Deciduous

hardwoods

Bob Altman

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Species associated with closed canopy forest also use early seral habitats…

IF appropriate habitat elements are available

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Species that specialize on conifers

Red Tree Vole

Hemlock Looper

Red Crossbill

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Many conifer forest associates rely on diversity of plants

Spruce Grouse

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Elements of Quality Early Seral Habitat

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Residual trees and

snags

Matt Lee

D. Vesely

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Cavity-nesters in burned forests

•Fire-killed snags are important resource for foraging and nesting

•Many species respond negatively to salvage logging

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Bob Altman

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D. Vesely

Early Seral Habitat for Reptiles

•Basking•Prey

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Dead Wood as Refugia

D. Vesely

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Plant Diversity = Food Resources• Foliage• Nectar• Fruits• Seeds

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Plant Diversity: foundation of

food webs

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Matt Lee

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Arthropods

• Insect diversity correlated with plant diversity

• Deciduous species support more insects

• Influence of deciduous litter on soil food webs?

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Peter LaTourrette

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Importance of Early Seral Broadleaf Communities to Avian

Biodiversity

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1968 1972 1976 1980 1984 1988 1992 1996 2000 2004

30 Year Trend for Swainson’s Thrush from Tillamook S.F. BBS Route

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Creating Early Seral Habitat?

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Effects of Conifer-centric Forest Management on Early Seral

Habitat• Fewer residual structures

• Altered vegetation composition– Alters patterns of food

abundance

– Reduces diversity of food resources

– Alters food webs

• Reduced temporal span

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Consequences of reduced temporal span of early seral

habitats• Limit on shrub size

and age

• Shortens duration of shrubby habitat

• Reduced persistence of shrubs into mid-aged forests

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Restoration of Late Seral Forest

• Emphasizes large trees

• Size limit on harvest area on federal lands

• What will understory look like?

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Keep all the pieces

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