Understanding species and community response to environmental change – A functional trait perspective

2011 ◽  
Vol 145 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Camilla Wellstein ◽  
Boris Schröder ◽  
Björn Reineking ◽  
Niklaus E. Zimmermann
Keyword(s):  
Environmental Change ◽  
Functional Trait ◽  
Community Response ◽  
Response To Environmental Change

scholarly journals Eco-evolutionary community turnover following environmental change

2018 ◽  
Author(s):  
Jesse R. Lasky
Keyword(s):  
Genetic Diversity ◽  
Gene Flow ◽  
Environmental Change ◽  
Community Dynamics ◽  
Environmental Gradients ◽  
Interspecific Variation ◽  
Community Response ◽  
High Gene Flow ◽  
High Gene ◽  
Response To Environmental Change

AbstractCo-occurring species often differ in intraspecific genetic diversity, which in turn can affect adaptation in response to environmental change. Specifically, the simultaneous evolutionary responses of co-occurring species to temporal environmental change may influence community dynamics. Local adaptation along environmental gradients combined with gene flow can promote genetic diversity of traits under selection within populations. Here I build off existing quantitative genetic theory to study community dynamics of locally adapted species in response to temporal environmental change. I show that species with greater gene flow have lower equilibrium population size due to maladaptive immigrant genotypes (migration load). However, following abrupt environmental change that leaves all species initially maladapted, high gene flow species adapt faster due to greater standing genetic diversity. As a result, communities may undergo a transient reversal in relative abundance, sometimes only after substantial lag periods. If constant temporal environmental change is applied, the community exhibits a shift toward stable dominance by species with intermediate gene flow. High gene flow species can sometimes increase abundance under environmental change if environmental change supresses superior competitor but lower gene flow species. The community dynamics observed here parallel the purely ecological successional dynamics following disturbances and are analogous to the transient benefit of hypermutator alleles under changing environments. My results demonstrate how interspecific variation in life history can have far-reaching impacts on eco-evolutionary community response to environmental change.

USING HISTORICAL ANNUAL REPORTS IN TEACHING: LETTING THE PAST BENEFIT THE PRESENT

1992 ◽  
Vol 19 (1) ◽  
pp. 29-50 ◽  
Author(s):  
Joel Amernic ◽  
Ramy Elitzur
Keyword(s):  
Environmental Change ◽  
Cash Flow ◽  
Accounting Education ◽  
Annual Reports ◽  
The Past ◽  
Response To Environmental Change

In this article, it is suggested that accounting education may be enhanced by the use of published historical accounting materials, such as annual reports. Comparing such materials with modern reports serves to reinforce the notion that accounting evolves in response to environmental change. Further, requiring students to analytically derive cash flow statements from historical published annual reports provides several direct pedagogical benefits.

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