NDLI: Can R*s Predict Invasion in Semi-arid Grasslands?

Content Provider	Springer Nature Link
Author	Krueger Mangold, Jane Sheley, Roger Engel, Richard
Copyright Year	2006
Abstract	We estimated Rs and tested the applicability of R theory on nonindigenous plant invasions in semi-arid rangeland. R* is the concentration of a resource that a species requires to survive in a habitat. R* theory predicts that a species with a lower R* for the most limiting resource will competitively displace a species with a higher R* under equilibrium conditions. In a greenhouse, annual sunflower (Helianthus annuus L.), bluebunch wheatgrass (Agropyron spicatum Pursh), and spotted knapweed (Centaurea maculosa Lam.) were grown in monoculture and 2- and 3-species mixtures for three growth periods in an attempt to reduce soil NO3-N concentrations below each species’ R. At the end of each growth period, aboveground biomass by species and soil plant available nitrogen were sampled. Decreasing biomass coupled with decreasing soil plant available nitrogen was used to quantify Rs for the three species. Rs for annual sunflower, bluebunch wheatgrass, and spotted knapweed were estimated to be 0.6±0.16 ppm NO 3 − , less than 0.05 ppm NO 3 − , and 0.6±0.13 ppm NO 3 − , respectively. Estimated Rs did not predict the outcome of competition among species. To successfully predict plant community dynamics on semi-arid rangeland with and without the presence of a nonindigenous invasive species, a more comprehensive model that includes mechanisms in addition to competition may have to be considered. We speculate that R* theory may prove most useful for predicting the outcome of competition within functional groups.
Starting Page	1343
Ending Page	1354
Page Count	12
File Format	PDF
ISSN	13873547
Journal	Biological Invasions
Volume Number	8
Issue Number	6
e-ISSN	15731464
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-01-13
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Agropyron spicatum Centaurea maculosa Helianthus annuus nitrogen plant competition R* theory spotted knapweed succession Forestry Zoology Hydrobiology Ecology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Comparing susceptibility of eastern and western US grasslands to competition and allelopathy from spotted knapweed [Centaurea stoebe L. subsp. micranthos (Gugler) Hayek]

Linking field based studies with greenhouse experiments: the impact of Centaurea stoebe (=C. maculosa) in British Columbia grasslands

Concentrations of the Allelochemical (±)-Catechin IN Centaurea maculosa Soils

Effects of plant competition, seed predation, and nutrient limitation on seedling survivorship of spotted knapweed (Centaurea stoebe)

Invasive alien plant species of virginia spotted knapweed (centaurea maculosa lam.) description.

Is (−)-Catechin a Novel Weapon of Spotted Knapweed (Centaurea stoebe)?

A Lack of Evidence for an Ecological Role of the Putative Allelochemical (±)-Catechin in Spotted Knapweed Invasion Success

Spotted Knapweed Ecology Spotted knapweed (Centaurea stoebe subsp.

Economic evaluation of spotted knapweed [Centaurea maculosa] control using picloram.

Can R*s Predict Invasion in Semi-arid Grasslands?

Similar Documents

Comparing susceptibility of eastern and western US grasslands to competition and allelopathy from spotted knapweed [Centaurea stoebe L. subsp. micranthos (Gugler) Hayek]

Linking field based studies with greenhouse experiments: the impact of Centaurea stoebe (=C. maculosa) in British Columbia grasslands

Concentrations of the Allelochemical (±)-Catechin IN Centaurea maculosa Soils

Effects of plant competition, seed predation, and nutrient limitation on seedling survivorship of spotted knapweed (Centaurea stoebe)

Invasive alien plant species of virginia spotted knapweed (centaurea maculosa lam.) description.

Is (−)-Catechin a Novel Weapon of Spotted Knapweed (Centaurea stoebe)?

A Lack of Evidence for an Ecological Role of the Putative Allelochemical (±)-Catechin in Spotted Knapweed Invasion Success

Spotted Knapweed Ecology Spotted knapweed (Centaurea stoebe subsp.

Economic evaluation of spotted knapweed [Centaurea maculosa] control using picloram.

Can R*s Predict Invasion in Semi-arid Grasslands?