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Woodpeckers In The City: Habitat Use And Minimum Area Requirements Of Woodpeckers In Urban Parks And Natural Areas In Portland, Oregon, Adam Baz
Dissertations and Theses
Urbanization has contributed to the fragmentation and alteration of natural habitats around the globe, and is rapidly increasing. In this context, forested parks play a critical role for many species by providing patches of usable habitat within the urban matrix. Such patches may be particularly valuable to forest-specialists like woodpeckers (Picidae). Yet many woodpeckers require large forest patches, which are limited in fragmented landscapes. Despite their recognized value as ecosystem engineers and keystone species, almost no research exists on woodpecker ecology or space-use in urban settings. What habitat components influence woodpecker abundance and what are their functional minimum area requirements …
Wood Trait Preferences Of Neotropical Xylophagous Beetles (Coleoptera: Cerambycidae), Christina Torres
Wood Trait Preferences Of Neotropical Xylophagous Beetles (Coleoptera: Cerambycidae), Christina Torres
Dissertations and Theses
Tree life history strategies are correlated with functional plant traits, such as wood density (WD), moisture content (MC), bark thickness (BT), and nitrogen content (N); these traits affect the nutrients available to xylophagous insects. Cerambycid beetles feed on substrates that vary in these traits, but little is known about how they affect community composition. The goal of this project is to document the abundance of two cerambycid subfamilies (Cerambycinae and Lamiinae) and the WD, MC, BT, and N content in the wood they eat. In a salvage project conducted adjacent to the Panama Canal, trees were felled and exposed to …