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Journal of Ecosystem & Ecography | ISSN: 2157-7625 | Volume 8
July 11-12, 2018 | Toronto, Canada
International Conference on
Environmental Microbiology & Microbial Ecology
International Conference on
Ecology, Ecosystems & Conservation Biology
&
The effect of intraspecific trait variation on the detecting of community assembly across successional stages
T
he trait-based approach is widely used in the study of different processes (dispersal limitation, habitat filtering, and limitation
similarity) underlying community assembly. However, most researches are based on trait mean value, which only considers
interspecific trait variation. Due to the genetic and environmental difference, a functional trait can also exhibit significant
intraspecific trait variation (ITV). Thus disentangle whether and how will the detection of the relative importance of ecological
process be influenced by the inclusion of ITV is of significant meaning for our understanding of community assembly. Here,
we collected community composition data and 8 functional traits in a young (24 ha) and an old (25 ha) growth forest plot.
We analyzed the relative importance of different process based on a recently developed modeling technique (STEPCAM).
Moreover, we detect the effect of ITV on the relative importance with and without ITV. We found that dispersal limitation is
most important at 20m scale in two forest plots, followed by habitat filtering, and limiting similarity had a minor effect. When
taking ITV into consideration, the proportion of deterministic process (habitat filtering and limiting similarity) improved at the
early successional stage, while such effect was not found at a late successional stage. Moreover, based on a single trait, we found
the deterministic process only improved for the nutrition absorb related trait when we consider of ITV at a late successional
stage, which implies the importance of soil condition on community assembly at this scale. In conclusion, our study highlights
the importance of ITV for the detection of a trait-based ecological process in this temperate forest across successional stages.
Biography
Professor Zhanqing Hao focused on the biodiversity and ecological functions. As one of the Chinese scientists who participated in biodiversity research, he initiated
the establishment of 25ha temperate permanent monitoring forest plot in Northeast China at 2004, which is the earliest temperate forest plot in China and had been
an important member of Chinese Forest Biodiversity Monitoring Network (CForBio). After that, a series of forest plots had been established along successional
stages and latitude gradients. All those forest plots provided the opportunity to detect the biodiversity patterns and maintaining mechanisms in temperate forests.
hzq@iae.ac.cnZhanqing Hao
Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, China
Zhanqing Hao, J Ecosys Ecograph 2018, Volume 8
DOI: 10.4172/2157-7625-C3-037