Cases: Group Selection

Evaluating the ecological impacts of EAB and climate change on black ash forests (Chippewa NF)
47.379596, -94.61931
Increase resilience of black ash stands threatened by emerald ash borer (EAB) through regeneration harvests aimed at increasing representation of non-ash species.
Field Trial - Natural Regeneration of Red Pine Under an Existing Stand through Shelterwood and Gap Thinning Techniques (MN DNR)
46.323033, -92.791008
Establish a fully stocked red pine stand from natural regeneration.
Group Selection Harvest for Northern Hardwood Regeneration (Carlton County, MN)
46.645463, -92.666523
The objective is to perpetuate red oak and mid-tolerant northern hardwoods on the site.
Group Selection Harvest with Artificial and Natural Regeneration on a Southern Floodplain Forest Community: Collischan Bottoms Site (MN DNR)
44.5806, -92.6123
Regenerate a mature lowland hardwoods stand to a young stand of similar composition.
Group Selection Harvest with Artificial and Natural Regeneration on a Southern Floodplain Forest Community: Eggleston Site (MN DNR)
44.621295, -92.66885
Regenerate a mature lowland hardwoods stand to a young stand of similar composition.
Mississippi River Pool 3 Floodplain Forest Silvicultural Trials (US Army Corps of Engineers)
44.695476, -92.715319
Promote regeneration of floodplain tree species and prevent conversion of site to reed canary grass. Provide wildlife habitat for the next 50 to 100 years.
Multi-aged Northern Hardwood Forest (Aitkin County)
47.00763, -93.731335
Manage for quality hardwoods and multiple age classes through release of crop trees and allowing for regeneration of red oak and paper birch through variable density thinning.
Oak Regeneration in Varying Gap Sizes (MN DNR)
46.715019, -92.778827
Change stand structure to a multi-aged stand while maintaining similar stand species and structure. Compare gap sizes to see which encouraged the most positive regeneration of oak.
Red Oak & Northern Hardwood Thin/Group Selection (Aitkin Cty, MN)
46.275026, -93.388933
Create a high quality, structurally diverse (un-even aged) hardwood forest via implementation of a variable density treatment (crop tree release / group selection harvest).
Regeneration and Stand Improvement Results in Bottomland Hardwoods 30 Years after Initial Treatment (MN DNR)
44.600222, -92.625645
Regenerate the mature portion of a lowland hardwoods stand to a young stand of similar composition and improve health and vigor of younger portion of the stand.
Results of 35 years of Lowland Hardwoods Regeneration Efforts on a Floodplain Forest Site in the Vermillion/Mississippi River Bottoms (MN DNR)
44.665304, -92.731634
Regenerate mature lowland hardwood stands to young stands of similar composition.
Small Gap Harvest with Natural and Artificial Regeneration in Northern Hardwoods on a Southern Mesic Oak-Basswood Forest Plant Community (MN DNR)
43.903317, -92.341258
Maintain the maple-basswood native plant community including a regenerated component of oak while retaining a diverse shrub layer and maintaining or increasing the diversity of native plants in the herbaceous layer.
Variable Overstory Density Management for White Pine Regeneration in Two Native Plant Communities (MN DNR)
46.203202, -94.492236
Establish or maintain uneven aged pine-mixed hardwood stands with a significant white pine component using natural regeneration.

Oak Scarification Trials using Good Neighbor Authority (USFS/WDNR)

Promote mixed oak-pine stands for quality sawtimber and wildlife habitat associated with the Northern Dry-Mesic Forest natural community. Test various mechanical scarification techniques to create favorable seedbeds and increase oak and white pine regen.

Cover type: Central hardwoods

Map of Aitkin County public land showing years since harvest.

Reserve Patch Study (Aitkin Cty, MN)

Sample reserve patches retained for legacy purposes during aspen harvests (clearcut with aggregated retention) to evaluate "old forest" attributes.

Cover type: Aspen-Birch

Rolling topography with young, 2-3 foot tall red pine seedlings in the foreground and mixed mature conifer and hardwood in the background.

Regenerating Hart Lake natural origin red pine using a mix of artificial and natural regeneration (MN DNR)

Use natural and artificial regeneration practices to regenerate a natural origin red pine site with characteristics that mimic a natural origin stand in structure and diversity, while maintaining red pine as the dominant species.

Cover type: Pine

Newly regenerated red pine seedlings, about a foot tall, with tall reserved white pine trees in the background.

Regenerating Bear Lake natural origin red pine using a mix of artificial and natural regeneration (MN DNR)

Use natural and artificial regeneration practices to regenerate a natural origin red pine site with characteristics that mimic a natural origin stand in structure and diversity, while maintaining red pine as the dominant species.

Cover type: Pine

Regeneration on the site.

Hardwood Hill II – Northern hardwoods shelterwood with minimal scarification (St. Louis County)

The objective of this sale is to perpetuate the northern hardwood composition of the stand, retaining some species diversity on the landscape. Secondarily, we will provide a diversity of harvest species for operators and smaller mills.

Cover type: Northern hardwoods

Paper Birch Regeneration in a Shelterwood vs Seed-tree Harvest (MN DNR)

Determine best silvicultural method for paper birch regeneration.

Cover type: Northern hardwoods

A Comparison of Establishment Methods for Northern Red Oak Regeneration in a Southern Dry-Mesic Oak Forest (MN DNR)

Regenerate a mature red oak stand to a young stand of similar composition.

Cover type: Central hardwoods

Direct Seeding of Hardwoods on a Former Agricultural Site with Observations on Soil Compaction (MN DNR)

Improve water quality, wildlife habitat, outdoor recreation opportunities and produce forest products by establishing a mixed hardwood stand on a former agricultural field.

Cover type: Other

Epicormic branching on red oak trees about 10 years after thinning.

Oak Epicormic Branching and Radial Growth after Thinning in Three Native Plant Communities (MN DNR)

Oak crop tree release to improve timber quality, stand health and mast production for wildlife.

Cover type: Other

Aerial photo of the gaps created in the study.

Oak Regeneration in Varying Gap Sizes (MN DNR)

Change stand structure to a multi-aged stand while maintaining similar stand species and structure. Compare gap sizes to see which encouraged the most positive regeneration of oak.

Cover type: Northern hardwoods