NDLI: Early stages of secondary succession on abandoned cropland in north-east Borneo Island

Content Provider	Springer Nature Link
Author	Ohtsuka, Toshiyuki
Copyright Year	1999
Abstract	A study on community structure and floristic change in the early stages of the tropical old-field succession in an intensive shifting cultivation area, Sabah, north-east Borneo Island, was conducted in March and September 1997. Dense therophytic communities were established soon after abandonment, and rapidly changed: namely, from Galinsoga parviflora (in approximately 1–2 months) to Crassocephalum crepidioides (in approximately 3–5 months) and further to Conyza sumatrensis (in approximately 1 year). These therophytic communities were replaced by perennial grass and shrub species, such as Imperata cylindrica and Eupatorium odoratum, within 3 years after abandonment. At this stage, a few pioneer tree species such as Trema orientalis made a sparse canopy layer approximately 3–4 m high. The three pioneer annuals have wind-dispersed small seeds. The plant densities of the three annuals did not appear to change between areas fallow for 1 month and 4 months. Almost all of the seedlings of the three annuals might simultaneously have invaded the fallowed field soon after abandonment. The three pioneer annuals take a different amount of time to reach their respective mature sizes. This resulted in the rapid successional changes in the tropical old-field succession. The seed-bank annuals, whose seeds germinate after the winter pre-chilling, occurred in the temperate old-fields as the first-year pioneers under seasonal condition. Intermittent shifting cultivation and tropical conditions without seasonality favour the occurrence of wind-dispersed annuals with a spatially fugitive strategy.
Starting Page	281
Ending Page	290
Page Count	10
File Format	PDF
ISSN	09123814
Journal	Ecological Research
Volume Number	14
Issue Number	3
e-ISSN	14401703
Language	English
Publisher	Springer-Verlag
Publisher Date	1999-01-01
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	old-field succession pioneers seed-bank annuals tropical regions wind-dispersed annuals Behavioural Sciences Ecology Evolutionary Biology Forestry Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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