scholarly journals Intraspecific Trait Variation and Coordination: Root and Leaf Economics Spectra in Coffee across Environmental Gradients

2017 ◽  
Vol 8 ◽  
Author(s):  
Marney E. Isaac ◽  
Adam R. Martin ◽  
Elias de Melo Virginio Filho ◽  
Bruno Rapidel ◽  
Olivier Roupsard ◽  
...  
2016 ◽  
Vol 31 (3) ◽  
pp. 604-612 ◽  
Author(s):  
Adam R. Martin ◽  
Bruno Rapidel ◽  
Olivier Roupsard ◽  
Karel Van den Meersche ◽  
Elias Melo Virginio Filho ◽  
...  

2020 ◽  
Author(s):  
Diego Anderson Dalmolin ◽  
Alexandro Marques Tozetti ◽  
Maria João Ramos Pereira

ABSTRACTTrait variation across environmental gradients results from two processes: intraspecific variation (ITV) and turnover. Tadpoles are known to exhibit phenotypic plasticity in several traits in response to the environment, resulting from intra or interspecific variation. Here we evaluate patterns of intraspecific variation in functional traits of adult anurans (head shape, eye size and position, limb length and body mass) and their relationship with environmental variables in an anuran metacommunity in southern Brazil. From anurans sampled from 33 ponds, we decomposed trait variation into ITV and turnover and modelled trait-environment relationships. We predict that the contribution of ITV and turnover to trait variation and trait-environment relationships should vary according to the preferred habitat of the species and the analysed traits. Intraspecific variation accumulated the highest rate of trait variation for arboreal species, while interspecific variation was greater for aquatic-terrestrial species and for the whole set of species. The contributions of turnover and ITV to shifts in community mean trait values were similar between traits, but differed between species sets. Depth, distance between ponds, area of Pinus surrounding the ponds, and types of pond vegetation and substrate strongly influenced trait variation, but their relative contribution depended on the analysed traits and species sets. The great contribution of ITV for head shape and eye size and position suggests the existence of intraspecific adaptations to microhabitats, while turnover dominance in the variation of body mass and limb length suggests differences in dispersal and trophic segregation between species.


2016 ◽  
Author(s):  
Maxime Dahirel ◽  
Jasper Dierick ◽  
Maarten De Cock ◽  
Bonte Dries

SummaryApproaches based on functional traits have proven especially valuable to understand how communities respond to environmental gradients. Until recently, they have, however, often ignored the potential consequences of intraspecific trait variation (ITV). This position becomes potentially more problematic when studying animals and behavioural traits, as behaviours can be altered very flexibly at the individual level to track environmental changes.Urban areas are an extreme example of human-changed environments, exposing organisms to multiple, strong, yet relatively standardized, selection pressures. Adaptive behavioural responses are thought to play a major role in animals’ success or failure in these new environments. The consequences of such behavioural changes for ecosystem processes remain understudied.Using 62 sites of varying urbanisation level, we investigated how species turnover and ITV influenced community-level behavioural responses to urbanisation, using orb web spiders and their webs as models of foraging behaviour.ITV explained around 30% of the total trait variation observed among communities. Spiders altered their web-building behaviour in cities in ways that increase the capture efficiency of webs. These traits shifts were partly mediated by species turnover, but ITV increased their magnitude. The importance of ITV varied depending on traits and on the spatial scale at which urbanisation was considered. Available prey biomass decreased with urbanisation; the corresponding decrease in prey interception by spiders was less important when ITV in web traits was accounted for.By facilitating trait-environment matching despite urbanisation, ITV thus helps communities to buffer the effects of environmental changes on ecosystem functioning. Despite being often neglected from community-level analyses, our results highlight the importance of accounting for intraspecific trait variation to fully understand trait responses to (human-induced) environmental changes and their impact on ecosystem functioning.


2021 ◽  
Author(s):  
Sabine Flöder ◽  
Joanne Yong ◽  
Toni Klauschies ◽  
Ursula Gaedke ◽  
Tobias Poprick ◽  
...  

Ecosphere ◽  
2021 ◽  
Vol 12 (8) ◽  
Author(s):  
Meifeng Deng ◽  
Weixing Liu ◽  
Ping Li ◽  
Lin Jiang ◽  
Shaopeng Li ◽  
...  

2015 ◽  
Vol 22 (1) ◽  
pp. 137-150 ◽  
Author(s):  
Emily V. Moran ◽  
Florian Hartig ◽  
David M. Bell

2021 ◽  
Author(s):  
Brody Sandel ◽  
Claire Pavelka ◽  
Thomas Hayashi ◽  
Lachlan Charles ◽  
Jennifer Funk ◽  
...  

2015 ◽  
Vol 185 (6) ◽  
pp. 737-746 ◽  
Author(s):  
Manuela González-Suárez ◽  
Sven Bacher ◽  
Jonathan M. Jeschke

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