Changes in Epiphyte Communities as the Shrub,Acer circinatum, Develops and Ages
| Autor: | Bruce McCune, Abbey L. Rosso, Andrea Ruchty |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Ecological niche
Acer circinatum Vine ved/biology Ecology Chronosequence media_common.quotation_subject ved/biology.organism_classification_rank.species food and beverages Plant Science Biology biology.organism_classification Shrub Competition (biology) Botany Colonization Epiphyte Ecology Evolution Behavior and Systematics media_common |
| Zdroj: | The Bryologist. 104:274-281 |
| ISSN: | 1938-4378 0007-2745 |
| DOI: | 10.1639/0007-2745(2001)104[0274:ciecat]2.0.co;2 |
| Popis: | The Pacific Northwest tall shrub Acer circinatum (vine maple) can host diverse and abundant epiphyte communities. A chronosequence approach revealed that these communities gradually shift in composition as the shrub progresses through its life cycle. Different epiphytic life forms occupy different spatial and temporal niches on shrub stems. These life forms generally shift upwards along the shrub stem as the stem ages and develops, in accordance with the similar gradient hypothesis. We postulate the following sequence of events. An initial wave of colonization occurs as new substrate is laid down. Over time, superior competitors gradually engulf and overgrow competitively inferior primary colonizers. Concurrently, shrub stem microclimate changes as shrub stems grow, age, and layer, causing the processes of competition and colonization to shift in favor of different epiphytic life forms during different life stages of the shrub stem. We define four separate shrub stem life stages: life classes 1–4... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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