Turbulence-mediated facilitation of resource uptake in patchy stream macrophytes
Many landscapes are characterized by a patchy, rather than homogeneous, distribution of vegetation. Often this patchiness is composed of single-species patches with contrasting traits, interacting with each other. To date, it is unknown whether patches of different species affect each other's u...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/390021 2023-12-03T10:23:41+01:00 Turbulence-mediated facilitation of resource uptake in patchy stream macrophytes Cornacchia, Loreta Licci, Sofia Nepf, Heidi Folkard, Andrew van der Wal, Daphne van de Koppel, Johan Puijalon, Sara Bouma, Tjeerd J. Proceskunde Coastal dynamics, Fluvial systems and Global change 2019-03-01 application/pdf https://dspace.library.uu.nl/handle/1874/390021 en eng 0024-3590 https://dspace.library.uu.nl/handle/1874/390021 info:eu-repo/semantics/OpenAccess Oceanography Aquatic Science Article 2019 ftunivutrecht 2023-11-08T23:16:33Z Many landscapes are characterized by a patchy, rather than homogeneous, distribution of vegetation. Often this patchiness is composed of single-species patches with contrasting traits, interacting with each other. To date, it is unknown whether patches of different species affect each other's uptake of resources by altering hydrodynamic conditions, and how this depends on their spatial patch configuration. Patches of two contrasting aquatic macrophyte species (i.e., dense canopy-forming Callitriche and sparse canopy-forming Groenlandia) were grown together in a racetrack flume and placed in different patch configurations. We measured 15NH4+ uptake rates and hydrodynamic properties along the centerline and the lateral edge of both patches. When the species with a taller, denser canopy (Callitriche) was located upstream of the shorter, sparser species (Groenlandia), it generated turbulence in its wake that enhanced nutrient uptake for the sparser Groenlandia. At the same time, Callitriche benefited from being located at a leading edge where it was exposed to higher mean velocity, as its canopy was too dense for turbulence to penetrate from upstream. Consistent with this, we found that ammonium uptake rates depended on turbulence level for the sparse Groenlandia and on mean flow velocity for the dense Callitriche, but Total Kinetic Energy was the best descriptor of uptake rates for both species. By influencing turbulence, macrophyte species interact with each other through facilitation of resource uptake. Hence, heterogeneity due to multispecific spatial patchiness has crucial implications for both species interactions and aquatic ecosystem functions, such as nitrogen retention. Article in Journal/Newspaper Groenlandia Utrecht University Repository |
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Open Polar |
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Utrecht University Repository |
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ftunivutrecht |
language |
English |
topic |
Oceanography Aquatic Science |
spellingShingle |
Oceanography Aquatic Science Cornacchia, Loreta Licci, Sofia Nepf, Heidi Folkard, Andrew van der Wal, Daphne van de Koppel, Johan Puijalon, Sara Bouma, Tjeerd J. Turbulence-mediated facilitation of resource uptake in patchy stream macrophytes |
topic_facet |
Oceanography Aquatic Science |
description |
Many landscapes are characterized by a patchy, rather than homogeneous, distribution of vegetation. Often this patchiness is composed of single-species patches with contrasting traits, interacting with each other. To date, it is unknown whether patches of different species affect each other's uptake of resources by altering hydrodynamic conditions, and how this depends on their spatial patch configuration. Patches of two contrasting aquatic macrophyte species (i.e., dense canopy-forming Callitriche and sparse canopy-forming Groenlandia) were grown together in a racetrack flume and placed in different patch configurations. We measured 15NH4+ uptake rates and hydrodynamic properties along the centerline and the lateral edge of both patches. When the species with a taller, denser canopy (Callitriche) was located upstream of the shorter, sparser species (Groenlandia), it generated turbulence in its wake that enhanced nutrient uptake for the sparser Groenlandia. At the same time, Callitriche benefited from being located at a leading edge where it was exposed to higher mean velocity, as its canopy was too dense for turbulence to penetrate from upstream. Consistent with this, we found that ammonium uptake rates depended on turbulence level for the sparse Groenlandia and on mean flow velocity for the dense Callitriche, but Total Kinetic Energy was the best descriptor of uptake rates for both species. By influencing turbulence, macrophyte species interact with each other through facilitation of resource uptake. Hence, heterogeneity due to multispecific spatial patchiness has crucial implications for both species interactions and aquatic ecosystem functions, such as nitrogen retention. |
author2 |
Proceskunde Coastal dynamics, Fluvial systems and Global change |
format |
Article in Journal/Newspaper |
author |
Cornacchia, Loreta Licci, Sofia Nepf, Heidi Folkard, Andrew van der Wal, Daphne van de Koppel, Johan Puijalon, Sara Bouma, Tjeerd J. |
author_facet |
Cornacchia, Loreta Licci, Sofia Nepf, Heidi Folkard, Andrew van der Wal, Daphne van de Koppel, Johan Puijalon, Sara Bouma, Tjeerd J. |
author_sort |
Cornacchia, Loreta |
title |
Turbulence-mediated facilitation of resource uptake in patchy stream macrophytes |
title_short |
Turbulence-mediated facilitation of resource uptake in patchy stream macrophytes |
title_full |
Turbulence-mediated facilitation of resource uptake in patchy stream macrophytes |
title_fullStr |
Turbulence-mediated facilitation of resource uptake in patchy stream macrophytes |
title_full_unstemmed |
Turbulence-mediated facilitation of resource uptake in patchy stream macrophytes |
title_sort |
turbulence-mediated facilitation of resource uptake in patchy stream macrophytes |
publishDate |
2019 |
url |
https://dspace.library.uu.nl/handle/1874/390021 |
genre |
Groenlandia |
genre_facet |
Groenlandia |
op_relation |
0024-3590 https://dspace.library.uu.nl/handle/1874/390021 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1784271913179152384 |