Macroinvertebrate community composition and richness along extreme gradients: The role of local, catchment, and climatic variables in Patagonian headwater streams

2021 ◽  
Author(s):  
Anna Astorga Roine ◽  
Brian Reid ◽  
Luis Uribe ◽  
Paulo Moreno‐Meynard ◽  
Pablo Fierro ◽  
...  
Keyword(s):  
Community Composition ◽  
Headwater Streams ◽  
Macroinvertebrate Community ◽  
Climatic Variables

The role of macrophyte structural complexity and water flow velocity in determining the epiphytic macroinvertebrate community composition in a lowland stream

Hydrobiologia ◽  
2017 ◽  
Vol 806 (1) ◽  
pp. 157-173 ◽  
Author(s):  
Jan-Willem Wolters ◽  
Ralf C. M. Verdonschot ◽  
Jonas Schoelynck ◽  
Piet F. M. Verdonschot ◽  
Patrick Meire
Keyword(s):  
Flow Velocity ◽  
Community Composition ◽  
Water Flow ◽  
Structural Complexity ◽  
Macroinvertebrate Community ◽  
Water Flow Velocity ◽  
Lowland Stream

An island biogeography model for beta diversity and endemism: The roles of speciation, extinction and dispersal

2015 ◽  
Vol 08 (01) ◽  
pp. 1550011 ◽  
Author(s):  
Youhua Chen
Keyword(s):  
Numerical Simulation ◽  
Community Composition ◽  
Beta Diversity ◽  
Island Biogeography ◽  
Positive Relationship ◽  
Community Patterns ◽  
Speciation Rate ◽  
Immigration Rate ◽  
Extinction Rates

A community composition island biogeography model was developed to explain and predict two community patterns (beta diversity and endemism) with the consideration of speciation, extinction and dispersal processes. Results showed that rate of speciation is positively and linearly associated with beta diversity and endemism, that is, increasing species rates typically could increase the percentage of both endemism and beta diversity. The influences of immigration and extinction rates on beta diversity and endemism are nonlinear, but with numerical simulation, I could observe that increasing extinction rates would lead to decreasing percentage of endemism and beta diversity. The role of immigration rate is very similar to that of speciation rate, having a positive relationship with beta diversity and endemism. Finally, I found that beta diversity is closely related to the percentage of endemism. The slope of this positive relationship is determined jointly by different combinations of speciation, extinction and immigration rates.

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