Being evergreen in an habitat with atenuated seasonal contrasts – a major competitive advantage ?
This study experimentally compares growth of four aquatic macrophytes species (Sparganium emersum Rehm., Hippuris vulgaris L., Groenlandia densa (L.) Fourr., Luronium natans (L.) Raf.) with different modes of winter persistence in a thermally buffered habitat. The question is whether the above-groun...
Main Authors: | , |
---|---|
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2003
|
Subjects: | |
Online Access: | https://hal.science/halsde-00152126 |
id |
ftunitours:oai:HAL:halsde-00152126v1 |
---|---|
record_format |
openpolar |
spelling |
ftunitours:oai:HAL:halsde-00152126v1 2024-04-28T08:22:44+00:00 Being evergreen in an habitat with atenuated seasonal contrasts – a major competitive advantage ? Greulich, Sabine Bornette, Gudrun Cités, Territoires, Environnement et Sociétés (CITERES) Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Ecologie des Hydrosystèmes Fluviaux (EHF) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) 2003 https://hal.science/halsde-00152126 en eng HAL CCSD Springer Verlag halsde-00152126 https://hal.science/halsde-00152126 ISSN: 1385-0237 EISSN: 1573-5052 Plant Ecology https://hal.science/halsde-00152126 Plant Ecology, 2003, 167, pp.9-18 aquatic macrophytes competition phenology plant strategies seasonal cycle info:eu-repo/semantics/article Journal articles 2003 ftunitours 2024-04-11T00:35:13Z This study experimentally compares growth of four aquatic macrophytes species (Sparganium emersum Rehm., Hippuris vulgaris L., Groenlandia densa (L.) Fourr., Luronium natans (L.) Raf.) with different modes of winter persistence in a thermally buffered habitat. The question is whether the above-ground persistence of photosynthetic structures during winter can compensate for low growth rates of evergreens when they compete with fast growing, non-evergreen species. The experiment was carried out in experimental boxes installed in a former river channel fed by stenothermic ground-water. Species were planted pairwise in experimental boxes in autumn, monitoring was carried out in the following year: degree of evergreenness was evaluated through number of ramets present prior to the main growing season, competitive ability of species was assessed during the growing season through cover measurements at three dates. Degree of evergreenness varied considerably between species, ranging from increase of ramet numbers during winter in Luronium over preservation of ramet numbers in Groenlandia and Hippuris to nearly complete winter die-back in Sparganium. Luronium presented the highest cover during the entire growing season. Only by the end of summer did Sparganium attain a similar cover through a high growth rate. Despite large differences in cover, growth appeared largely unaffected by the kind of treatment partner a species was confronted with. Nevertheless, this study demonstrates that being evergreen can compensate for a low growth rate during the main growing season when it is associated to extensive growth outside this main growing season. Mots clef: aquatic macrophytes; competition; phenology; plant strategies; seasonal cycle. Article in Journal/Newspaper Groenlandia Université François-Rabelais de Tours: HAL |
institution |
Open Polar |
collection |
Université François-Rabelais de Tours: HAL |
op_collection_id |
ftunitours |
language |
English |
topic |
aquatic macrophytes competition phenology plant strategies seasonal cycle |
spellingShingle |
aquatic macrophytes competition phenology plant strategies seasonal cycle Greulich, Sabine Bornette, Gudrun Being evergreen in an habitat with atenuated seasonal contrasts – a major competitive advantage ? |
topic_facet |
aquatic macrophytes competition phenology plant strategies seasonal cycle |
description |
This study experimentally compares growth of four aquatic macrophytes species (Sparganium emersum Rehm., Hippuris vulgaris L., Groenlandia densa (L.) Fourr., Luronium natans (L.) Raf.) with different modes of winter persistence in a thermally buffered habitat. The question is whether the above-ground persistence of photosynthetic structures during winter can compensate for low growth rates of evergreens when they compete with fast growing, non-evergreen species. The experiment was carried out in experimental boxes installed in a former river channel fed by stenothermic ground-water. Species were planted pairwise in experimental boxes in autumn, monitoring was carried out in the following year: degree of evergreenness was evaluated through number of ramets present prior to the main growing season, competitive ability of species was assessed during the growing season through cover measurements at three dates. Degree of evergreenness varied considerably between species, ranging from increase of ramet numbers during winter in Luronium over preservation of ramet numbers in Groenlandia and Hippuris to nearly complete winter die-back in Sparganium. Luronium presented the highest cover during the entire growing season. Only by the end of summer did Sparganium attain a similar cover through a high growth rate. Despite large differences in cover, growth appeared largely unaffected by the kind of treatment partner a species was confronted with. Nevertheless, this study demonstrates that being evergreen can compensate for a low growth rate during the main growing season when it is associated to extensive growth outside this main growing season. Mots clef: aquatic macrophytes; competition; phenology; plant strategies; seasonal cycle. |
author2 |
Cités, Territoires, Environnement et Sociétés (CITERES) Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Ecologie des Hydrosystèmes Fluviaux (EHF) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Greulich, Sabine Bornette, Gudrun |
author_facet |
Greulich, Sabine Bornette, Gudrun |
author_sort |
Greulich, Sabine |
title |
Being evergreen in an habitat with atenuated seasonal contrasts – a major competitive advantage ? |
title_short |
Being evergreen in an habitat with atenuated seasonal contrasts – a major competitive advantage ? |
title_full |
Being evergreen in an habitat with atenuated seasonal contrasts – a major competitive advantage ? |
title_fullStr |
Being evergreen in an habitat with atenuated seasonal contrasts – a major competitive advantage ? |
title_full_unstemmed |
Being evergreen in an habitat with atenuated seasonal contrasts – a major competitive advantage ? |
title_sort |
being evergreen in an habitat with atenuated seasonal contrasts – a major competitive advantage ? |
publisher |
HAL CCSD |
publishDate |
2003 |
url |
https://hal.science/halsde-00152126 |
genre |
Groenlandia |
genre_facet |
Groenlandia |
op_source |
ISSN: 1385-0237 EISSN: 1573-5052 Plant Ecology https://hal.science/halsde-00152126 Plant Ecology, 2003, 167, pp.9-18 |
op_relation |
halsde-00152126 https://hal.science/halsde-00152126 |
_version_ |
1797584168906915840 |