Ecophysiological responses to neighbor removal in an old-field and a prairie in northeastern Kansas, USA

Title:

Ecophysiological responses to neighbor removal in an old-field and a prairie in northeastern Kansas, USA

Creator:

Norman, F. and Martin, C. E.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:a68fb445-b4af-4b7c-afdd-0cfc3285f74b
uuid:a68fb445-b4af-4b7c-afdd-0cfc3285f74b
issn:0300-3604
doi:10.1023/A:1007040506838

Subject:

Ambrosia trifida, Apocynum cannabinum, Aster pilosus, competition, Eryngium yuccifolium, Lespedeza capitata, photosynthesis, Solidago canadensis, stomatal conductance, and water potential

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

An ecophysiological approach was used to determine if competition can be detected among plants in a recently abandoned old-field and in a native tallgrass prairie in northeastern Kansas. In situ photosynthetic parameters and water potentials (Ψ) of target plants were measured 1-2 d after neighbor (intra- and interspecific) removal as well as 1-4 weeks later, and compared with values for plants with neighbors. Only two of the six study species (four old-field and two prairie species) responded to removal of neighboring plants, and only after several weeks had elapsed. Net photosynthetic rates (PN) and stomatal conductances (gs) of Ambrosia trifida in an old-field increased after removal of both intra- and interspecific neighbors. For Apocynum cannabinum, another old-field species, PN of target plants without neighbors was significantly higher than that of target plants with neighbors. For both these species, values of Ψ were not different between target plants with and without neighbors, suggesting that increased availability of nutrients may have been responsible for the observed ecophysiological responses. Though numerous past studies indicate that competition is a major factor influencing plants in old-field and in prairie communities, the experimental approach used in this study revealed that neighbor removal had only limited effects on ecophysiology of the target plants in either community. and F. Norman, C. E. Martin.

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

471-476

Source:

Photosynthetica | 1999 Volume:36 | Number:3

Harvested from:

CDK

Metadata only:

false