Biodiversity and ecosystem functioning: an ecosystem-level approach

Author(s):  
David Raffaelli ◽  
Alan M. Friedlander
2018 ◽  
Author(s):  
Filippo Ferrario ◽  
Thew Suskiewicz ◽  
Yuri Rzhanov ◽  
Ladd E Johnson ◽  
Philippe Archambault

Whether we want to conserve, restore or enhance biodiversity, or use it to assess the environmental status of our coasts, the indissoluble link between biodiversity and ecosystem functioning is influenced by the spatial context of an ecosystem (the seascape). Using field-based research conducted in subarctic regions, we will show how the seascape can modulate species interactions which impair the habitat-forming functions of kelp. Specifically, bottom heterogeneity modulates top-down grazer control impacting the functioning of artificial structures as habitats for canopy-forming seaweeds in habitat compensation efforts. Unfortunately, coastal habitat maps from which seascape information could be obtained are often non-existant or are coarse in scale. We thus present how optical imagery-derived photomosaics can be used to map biological and geomorphological features over continuous and wide areas. Moreover, photomosaics can reveal patterns of local distribution of benthic species that can be useful when assessing biodiversity to evaluate the environmental status in coastal areas. Seascape context is thus a determining element which will improve our ability to maintain ecosystem functioning and services and inform coastal management.


2017 ◽  
pp. 119-140 ◽  
Author(s):  
Richard D. Bardgett ◽  
Franciska T. de Vries ◽  
Wim H. van der Putten

2018 ◽  
Vol 33 (3) ◽  
pp. 341-352 ◽  
Author(s):  
Jiajia Liu ◽  
Maxwell Wilson ◽  
Guang Hu ◽  
Jinliang Liu ◽  
Jianguo Wu ◽  
...  

2019 ◽  
Vol 286 (1913) ◽  
pp. 20191857 ◽  
Author(s):  
Anita Narwani ◽  
Marta Reyes ◽  
Aaron Louis Pereira ◽  
Hannele Penson ◽  
Stuart R. Dennis ◽  
...  

A major challenge in ecology is to understand determinants of ecosystem functioning and stability in the face of disturbance. Some important species can strongly shape community structure and ecosystem functioning, but their impacts and interactions on ecosystem-level responses to disturbance are less well known. Shallow ponds provide a model system in which to study the effects of such species because some taxa mitigate transitions between alternative ecosystem states caused by eutrophication. We performed pond experiments to test how two foundation species (a macrophyte and a mussel) affected the biomass of planktonic primary producers and its stability in response to nutrient additions. Individually, each species reduced phytoplankton biomass and tended to increase rates of recovery from disturbance, but together the species reversed these effects, particularly with larger nutrient additions. This reversal was mediated by high cyanobacterial dominance of the community and a resulting loss of trait evenness. Effects of the foundation species on primary producer biomass were associated with effects on other ecosystem properties, including turbidity and dissolved oxygen. Our work highlights the important role of foundation species and their interactive effects in determining responses of ecosystem functioning to disturbance.


2022 ◽  
pp. 109-131
Author(s):  
David J. Perović ◽  
Sagrario Gámez-Virués ◽  
Douglas A. Landis ◽  
Teja Tscharntke ◽  
Myron P. Zalucki ◽  
...  

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