Diane Larson, PhD (Former Employee)
Science and Products
Filter Total Items: 72
Long-term dynamics of leafy spurge (Euphorbia esula) and its biocontrol agent, flea beetles in the genus Aphthona Long-term dynamics of leafy spurge (Euphorbia esula) and its biocontrol agent, flea beetles in the genus Aphthona
Three flea beetle species (Aphthona spp.), first introduced into North America in 1988, have come to be regarded as effective biological control organisms for leafy spurge (Euphorbia esula). The black flea beetles (Aphthona lacertosa and A. czwalinae) in particular have been shown to cause reductions in leafy spurge stem counts in the northern Great Plains, while the brown flea beetle (A
Authors
Diane L. Larson, James B. Grace, Jennifer L. Larson
Soil modification by invasive plants: Effects on native and invasive species of mixed-grass prairies Soil modification by invasive plants: Effects on native and invasive species of mixed-grass prairies
Invasive plants are capable of modifying attributes of soil to facilitate further invasion by conspecifics and other invasive species. We assessed this capability in three important plant invaders of grasslands in the Great Plains region of North America: leafy spurge (Euphorbia esula), smooth brome (Bromus inermis) and crested wheatgrass (Agropyron cristatum). In a glasshouse, these...
Authors
N.R. Jordan, D.L. Larson, S.C. Huerd
Short-term disruption of a leafy spurge (Euphorbia esula) biocontrol program following herbicide application Short-term disruption of a leafy spurge (Euphorbia esula) biocontrol program following herbicide application
Integrated pest management (IPM) for invasive plant species is being advocated by researchers and implemented by land managers, but few studies have evaluated the success of IPM programs in natural areas. We assessed the relative effects of components of an IPM program for leafy spurge (Euphorbia esula), an invasive plant, at Theodore Roosevelt National Park, North Dakota. Effects of...
Authors
D.L. Larson, J.B. Grace, P.A. Rabie, P. Andersen
Insect visitation and pollen deposition in an invaded prairie plant community Insect visitation and pollen deposition in an invaded prairie plant community
Invasive plants with large flowering displays have been shown to compete with native plants for pollinator services, often to the detriment of native plant fitness. In this study, we compare the pollinator communities and pollen deposited on stigmas of native plant species within and away from stands of the invasive alien plant, leafy spurge (Euphorbia esula) at a large natural area in...
Authors
D.L. Larson, R.A. Royer, M.R. Royer
Canada thistle biological control agents on two South Dakota wildlife refuges Canada thistle biological control agents on two South Dakota wildlife refuges
We monitored populations of Canada thistle biocontrol agents Cassida rubiginosa, Ceutorhynchus litura, Larinus (= Hadroplantus) planus, Urophora cardui, Orellia (= Terellia) ruficauda, and Rhinocyllus conicus on Canada thistle (Cirsium arvense) at two national wildlife refuges in South Dakota from 1999 through 2003. C. litura, U. cardui, O. ruficauda, and R. conicus were present on both...
Authors
C.C. Reed, D.L. Larson, J.L. Larson
Insect visitation and pollen deposition in an invaded prairie plant community Insect visitation and pollen deposition in an invaded prairie plant community
No abstract available.
Authors
D.L. Larson, R.A. Royer, M.R. Royer
Alternative management practices of Cirsium arvense: final report Alternative management practices of Cirsium arvense: final report
No abstract available.
Authors
D.L. Larson, J.L. Larson, C. Reed
2004 inventory of the distribution and abundance of non-indigenous plants and rare plants at two riverine national parks in the Great Lakes Network -- final report 2004 inventory of the distribution and abundance of non-indigenous plants and rare plants at two riverine national parks in the Great Lakes Network -- final report
No abstract available.
Authors
J. Larson, D.L. Larson
Role of soil transformation in invasion of mixed-grass prairie Role of soil transformation in invasion of mixed-grass prairie
No abstract available.
Authors
N.R. Jordan, D.L. Larson, S.C. Huerd
Temporal dynamics of leafy spurge (Euphorbia esula) and two species of flea beetles (Aphthona spp.) used as biological control agents Temporal dynamics of leafy spurge (Euphorbia esula) and two species of flea beetles (Aphthona spp.) used as biological control agents
The goal of this study was to evaluate the biological control program of leafy spurge (Euphorbia esula) in a large natural area, Theodore Roosevelt National Park, western North Dakota, USA. Aphthona lacertosa and Aphthona nigriscutis have been released at more than 1800 points in the 18,600-ha South Unit of the park beginning in 1989; most releases have occurred since 1994. We...
Authors
D.L. Larson, J.B. Grace
Native weeds and exotic plants: relationships to disturbance in mixed grass prairie Native weeds and exotic plants: relationships to disturbance in mixed grass prairie
The paper compares distributions of native weedy species and exotic species with respect to three kinds of disturbance, roads, trails, and prairie dog towns. Data were collected at the north and south units of Theodore Roosevelt National Park and at Wind Cave National Park. The paper concludes that many exotic species differ substantially from native weeds in their exploitation of...
Authors
D.L. Larson
Native weeds and exotic plants: Relationships to disturbance in mixed-grass prairie Native weeds and exotic plants: Relationships to disturbance in mixed-grass prairie
Disturbance frequently is implicated in the spread of invasive exotic plants. Disturbances may be broadly categorized as endogenous (e.g., digging by fossorial animals) or exogenous (e.g., construction and maintenance of roads and trails), just as weedy species may be native or exotic in origin. The objective of this study was to characterize and compare exotic and native weedy plant...
Authors
D.L. Larson
Science and Products
Filter Total Items: 72
Long-term dynamics of leafy spurge (Euphorbia esula) and its biocontrol agent, flea beetles in the genus Aphthona Long-term dynamics of leafy spurge (Euphorbia esula) and its biocontrol agent, flea beetles in the genus Aphthona
Three flea beetle species (Aphthona spp.), first introduced into North America in 1988, have come to be regarded as effective biological control organisms for leafy spurge (Euphorbia esula). The black flea beetles (Aphthona lacertosa and A. czwalinae) in particular have been shown to cause reductions in leafy spurge stem counts in the northern Great Plains, while the brown flea beetle (A
Authors
Diane L. Larson, James B. Grace, Jennifer L. Larson
Soil modification by invasive plants: Effects on native and invasive species of mixed-grass prairies Soil modification by invasive plants: Effects on native and invasive species of mixed-grass prairies
Invasive plants are capable of modifying attributes of soil to facilitate further invasion by conspecifics and other invasive species. We assessed this capability in three important plant invaders of grasslands in the Great Plains region of North America: leafy spurge (Euphorbia esula), smooth brome (Bromus inermis) and crested wheatgrass (Agropyron cristatum). In a glasshouse, these...
Authors
N.R. Jordan, D.L. Larson, S.C. Huerd
Short-term disruption of a leafy spurge (Euphorbia esula) biocontrol program following herbicide application Short-term disruption of a leafy spurge (Euphorbia esula) biocontrol program following herbicide application
Integrated pest management (IPM) for invasive plant species is being advocated by researchers and implemented by land managers, but few studies have evaluated the success of IPM programs in natural areas. We assessed the relative effects of components of an IPM program for leafy spurge (Euphorbia esula), an invasive plant, at Theodore Roosevelt National Park, North Dakota. Effects of...
Authors
D.L. Larson, J.B. Grace, P.A. Rabie, P. Andersen
Insect visitation and pollen deposition in an invaded prairie plant community Insect visitation and pollen deposition in an invaded prairie plant community
Invasive plants with large flowering displays have been shown to compete with native plants for pollinator services, often to the detriment of native plant fitness. In this study, we compare the pollinator communities and pollen deposited on stigmas of native plant species within and away from stands of the invasive alien plant, leafy spurge (Euphorbia esula) at a large natural area in...
Authors
D.L. Larson, R.A. Royer, M.R. Royer
Canada thistle biological control agents on two South Dakota wildlife refuges Canada thistle biological control agents on two South Dakota wildlife refuges
We monitored populations of Canada thistle biocontrol agents Cassida rubiginosa, Ceutorhynchus litura, Larinus (= Hadroplantus) planus, Urophora cardui, Orellia (= Terellia) ruficauda, and Rhinocyllus conicus on Canada thistle (Cirsium arvense) at two national wildlife refuges in South Dakota from 1999 through 2003. C. litura, U. cardui, O. ruficauda, and R. conicus were present on both...
Authors
C.C. Reed, D.L. Larson, J.L. Larson
Insect visitation and pollen deposition in an invaded prairie plant community Insect visitation and pollen deposition in an invaded prairie plant community
No abstract available.
Authors
D.L. Larson, R.A. Royer, M.R. Royer
Alternative management practices of Cirsium arvense: final report Alternative management practices of Cirsium arvense: final report
No abstract available.
Authors
D.L. Larson, J.L. Larson, C. Reed
2004 inventory of the distribution and abundance of non-indigenous plants and rare plants at two riverine national parks in the Great Lakes Network -- final report 2004 inventory of the distribution and abundance of non-indigenous plants and rare plants at two riverine national parks in the Great Lakes Network -- final report
No abstract available.
Authors
J. Larson, D.L. Larson
Role of soil transformation in invasion of mixed-grass prairie Role of soil transformation in invasion of mixed-grass prairie
No abstract available.
Authors
N.R. Jordan, D.L. Larson, S.C. Huerd
Temporal dynamics of leafy spurge (Euphorbia esula) and two species of flea beetles (Aphthona spp.) used as biological control agents Temporal dynamics of leafy spurge (Euphorbia esula) and two species of flea beetles (Aphthona spp.) used as biological control agents
The goal of this study was to evaluate the biological control program of leafy spurge (Euphorbia esula) in a large natural area, Theodore Roosevelt National Park, western North Dakota, USA. Aphthona lacertosa and Aphthona nigriscutis have been released at more than 1800 points in the 18,600-ha South Unit of the park beginning in 1989; most releases have occurred since 1994. We...
Authors
D.L. Larson, J.B. Grace
Native weeds and exotic plants: relationships to disturbance in mixed grass prairie Native weeds and exotic plants: relationships to disturbance in mixed grass prairie
The paper compares distributions of native weedy species and exotic species with respect to three kinds of disturbance, roads, trails, and prairie dog towns. Data were collected at the north and south units of Theodore Roosevelt National Park and at Wind Cave National Park. The paper concludes that many exotic species differ substantially from native weeds in their exploitation of...
Authors
D.L. Larson
Native weeds and exotic plants: Relationships to disturbance in mixed-grass prairie Native weeds and exotic plants: Relationships to disturbance in mixed-grass prairie
Disturbance frequently is implicated in the spread of invasive exotic plants. Disturbances may be broadly categorized as endogenous (e.g., digging by fossorial animals) or exogenous (e.g., construction and maintenance of roads and trails), just as weedy species may be native or exotic in origin. The objective of this study was to characterize and compare exotic and native weedy plant...
Authors
D.L. Larson
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government