Trait differences between grass species along a climatic gradient in South and North America

Question: Are trait differences between grasses along a gradient related to climatic variables and/or photosynthetic pathway? Location: Temperate grassland areas of South and North America. Methods: In a common garden experiment, we cultivated C3 and C4 grasses from grasslands under different climat...

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Autores principales:	Oyarzabal, M., Paruelo, J.M., Del Pino, F., Oesterheld, M., Lauenroth, W.K.
Formato:	JOUR
Materias:	Dominant grass Plant trait Precipitation Temperate grassland Temperature C3 plant C4 plant climate conditions grass grassland interspecific variation photosynthesis precipitation (climatology) temperate environment temperature effect North America South America Poaceae
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_11009233_v19_n2_p183_Oyarzabal
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_11009233_v19_n2_p183_Oyarzabal
record_format	dspace
spelling	todo:paper_11009233_v19_n2_p183_Oyarzabal2023-10-03T16:06:36Z Trait differences between grass species along a climatic gradient in South and North America Oyarzabal, M. Paruelo, J.M. Del Pino, F. Oesterheld, M. Lauenroth, W.K. Dominant grass Plant trait Precipitation Temperate grassland Temperature C3 plant C4 plant climate conditions grass grassland interspecific variation photosynthesis precipitation (climatology) temperate environment temperature effect North America South America Poaceae Question: Are trait differences between grasses along a gradient related to climatic variables and/or photosynthetic pathway? Location: Temperate grassland areas of South and North America. Methods: In a common garden experiment, we cultivated C3 and C4 grasses from grasslands under different climatic conditions, and we measured a set of 12 plant traits related to size and resource capture and utilization. We described (1) interspecific plant trait differences along a climatic gradient defined by the precipitation and temperature at the location where each species is dominant and (2) the association between those plant trait differences and the photosynthetic pathway of the species. Results: Trait differences between grasses were related to the precipitation at the area where each species is dominant, and to the photosynthetic pathway of the species. Leaf length, leaf width, plant height, leaf area per tiller, specific leaf area, leaf δ13C ratio, and nitrogen resorption efficiency increased while leaf dry matter content and nitrogen concentration in senesced leaves decreased as precipitation increased. A proportion of these changes along the gradient was related to the photosynthetic pathway because dominant grass species in cold areas with low precipitation are mainly C3 and those from warm and wet areas are C4. Conclusions: A previous worldwide analysis showed that traits of graminoid species measured in situ changed slightly along climatic gradients (< 10% variance explained). In contrast, under a common environment we observed that (1) grass traits changed strongly along a climatic gradient (30-85% variance explained) and, (2) a proportion of those changes were related to the association between photosynthetic pathway of the species and precipitation. © IAVS; Opulus Press. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11009233_v19_n2_p183_Oyarzabal
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Dominant grass Plant trait Precipitation Temperate grassland Temperature C3 plant C4 plant climate conditions grass grassland interspecific variation photosynthesis precipitation (climatology) temperate environment temperature effect North America South America Poaceae
spellingShingle	Dominant grass Plant trait Precipitation Temperate grassland Temperature C3 plant C4 plant climate conditions grass grassland interspecific variation photosynthesis precipitation (climatology) temperate environment temperature effect North America South America Poaceae Oyarzabal, M. Paruelo, J.M. Del Pino, F. Oesterheld, M. Lauenroth, W.K. Trait differences between grass species along a climatic gradient in South and North America
topic_facet	Dominant grass Plant trait Precipitation Temperate grassland Temperature C3 plant C4 plant climate conditions grass grassland interspecific variation photosynthesis precipitation (climatology) temperate environment temperature effect North America South America Poaceae
description	Question: Are trait differences between grasses along a gradient related to climatic variables and/or photosynthetic pathway? Location: Temperate grassland areas of South and North America. Methods: In a common garden experiment, we cultivated C3 and C4 grasses from grasslands under different climatic conditions, and we measured a set of 12 plant traits related to size and resource capture and utilization. We described (1) interspecific plant trait differences along a climatic gradient defined by the precipitation and temperature at the location where each species is dominant and (2) the association between those plant trait differences and the photosynthetic pathway of the species. Results: Trait differences between grasses were related to the precipitation at the area where each species is dominant, and to the photosynthetic pathway of the species. Leaf length, leaf width, plant height, leaf area per tiller, specific leaf area, leaf δ13C ratio, and nitrogen resorption efficiency increased while leaf dry matter content and nitrogen concentration in senesced leaves decreased as precipitation increased. A proportion of these changes along the gradient was related to the photosynthetic pathway because dominant grass species in cold areas with low precipitation are mainly C3 and those from warm and wet areas are C4. Conclusions: A previous worldwide analysis showed that traits of graminoid species measured in situ changed slightly along climatic gradients (< 10% variance explained). In contrast, under a common environment we observed that (1) grass traits changed strongly along a climatic gradient (30-85% variance explained) and, (2) a proportion of those changes were related to the association between photosynthetic pathway of the species and precipitation. © IAVS; Opulus Press.
format	JOUR
author	Oyarzabal, M. Paruelo, J.M. Del Pino, F. Oesterheld, M. Lauenroth, W.K.
author_facet	Oyarzabal, M. Paruelo, J.M. Del Pino, F. Oesterheld, M. Lauenroth, W.K.
author_sort	Oyarzabal, M.
title	Trait differences between grass species along a climatic gradient in South and North America
title_short	Trait differences between grass species along a climatic gradient in South and North America
title_full	Trait differences between grass species along a climatic gradient in South and North America
title_fullStr	Trait differences between grass species along a climatic gradient in South and North America
title_full_unstemmed	Trait differences between grass species along a climatic gradient in South and North America
title_sort	trait differences between grass species along a climatic gradient in south and north america
url	http://hdl.handle.net/20.500.12110/paper_11009233_v19_n2_p183_Oyarzabal
work_keys_str_mv	AT oyarzabalm traitdifferencesbetweengrassspeciesalongaclimaticgradientinsouthandnorthamerica AT paruelojm traitdifferencesbetweengrassspeciesalongaclimaticgradientinsouthandnorthamerica AT delpinof traitdifferencesbetweengrassspeciesalongaclimaticgradientinsouthandnorthamerica AT oesterheldm traitdifferencesbetweengrassspeciesalongaclimaticgradientinsouthandnorthamerica AT lauenrothwk traitdifferencesbetweengrassspeciesalongaclimaticgradientinsouthandnorthamerica
_version_	1807320276500742144

Trait differences between grass species along a climatic gradient in South and North America

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