Paper · 2010 · Iowa State University Digital Repository (Iowa State University)

Japanese raspberry (Rubus parvifolius L.): An invasive species threat in savanna and prairie

Pauline Drobney; Mark P. Widrlechner

6
claims
6
verbatim quotes
1
citations
3
research areas
✓
Open access

Abstract

Japanese raspberry (Rubus parvifolius L.) is native to eastern Asia and Australia and has naturalized in several locations in Illinois, Iowa, Massachusetts, Missouri, and Ohio. This species was introduced in North America for food and erosion control, but it appears to be becoming a serious invasive species threat in savannas and prairies. It was found in a former commercial game-hunting farm on Walnut Creek National Wildlife Refuge (now Neal Smith National Wildlife Refuge) in 1991, and was identified as Japanese raspberry in 1995. Japanese raspberry grows vigorously and spreads via rooting from low-arching-to-prostrate canes that are up to 300 cm long, and its seeds can be dispersed by birds. In summer, primocanes are green to purplish green, though they turn reddish brown in winter. It has small pink flowers and bright red fruits. It thrives in shade in a remnant savanna on the refuge, forming rapidly expanding near-monoculture populations. Efforts to control it with herbicide treatment since its discovery have been unsuccessful, but also somewhat sporadic. A second population in a roadside within a mile of the refuge demonstrates its ability to thrive in full sun. County dredging of ditches for drainage improvement may be serving as a vector for its expansion.

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Claims 6

Observationobservedoriginal resultmeasured

Claim · model-written summary

Japanese raspberry has naturalized in five named US states.

Taxon
Japanese raspberry (Rubus parvifolius L.)Rubus parvifoliuse0
Outcome
has naturalizede0
Setting
Illinois, Iowa, Massachusetts, Missouri, and Ohioe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Rubus parvifolius
Rubus parvifolius · TaxonNadiatalent · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Japanese raspberry (Rubus parvifolius L.) is native to eastern Asia and Australia and has naturalized in several locations in Illinois, Iowa, Massachusetts, Missouri, and Ohio.”

✓ located verbatim in the source · abstract, characters 0–176 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Japanese raspberry spreads by rooting low arching to prostrate canes.

Taxon
Japanese raspberrye0
Organ / stage
canese0
Outcome
spreads via rootinge0
Value
up to 300 cm longe0

Verbatim

e0

“Japanese raspberry grows vigorously and spreads via rooting from low-arching-to-prostrate canes that are up to 300 cm long”

✓ located verbatim in the source · abstract, characters 538–660 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Birds can disperse Japanese raspberry seeds.

Taxon
itse0
Organ / stage
seedse0
Interactor
birdsAvese0other
Outcome
seeds can be dispersed by birdse0

Verbatim

e0

“its seeds can be dispersed by birds.”

✓ located verbatim in the source · abstract, characters 666–702 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Japanese raspberry thrives in shaded remnant savanna and forms expanding near monocultures.

Taxon
Ite0
Outcome
rapidly expanding near-monoculture populationse0
Setting
remnant savanna on the refugee0

Verbatim

e0

“It thrives in shade in a remnant savanna on the refuge, forming rapidly expanding near-monoculture populations.”

✓ located verbatim in the source · abstract, characters 845–956 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Sporadic herbicide efforts have not controlled Japanese raspberry.

Taxon
ite0
Treatment
herbicide treatmente0
Outcome
control ite0
Direction
unsuccessfule0
Qualifier
somewhat sporadice0

Not reportedComparator

Verbatim

e0

“Efforts to control it with herbicide treatment since its discovery have been unsuccessful, but also somewhat sporadic.”

✓ located verbatim in the source · abstract, characters 957–1075 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

A second population thrives in full sun near the refuge.

Taxon
A second populatione0
Outcome
thrive in full sune0
Setting
roadside within a mile of the refugee0

Verbatim

e0

“A second population in a roadside within a mile of the refuge demonstrates its ability to thrive in full sun.”

✓ located verbatim in the source · abstract, characters 1076–1185 · show in text ↑