Ants are key indicators of ecological change, but few studies have investigated how ant assemblages respond to dramatic changes in vegetation structure in temperate forests. Pests and pathogens are causing widespread loss of dominant canopy tree species; ant species composition and abundance may be very sensitive to such losses. Before the experimental removal of red oak trees to simulate effec...

Before European settlement, vast areas of the eastern US deciduous forest were dominated by oak species. Evidence indicates that periodic understory fire was an important ecological factor in the historical development of oak forests. During European settlement of the late 19th and early 20th century, much of the eastern United States was impacted by land-clearing, extensive timber harvesting, ...

Historical reference conditions provide important context for creating ecological restoration and management plans. The U.S. 19th Century Public Land Survey (PLS) records provide extensive ecological information for constructing such reference conditions. We used PLS records to reconstruct pre-Euro-American tree species cover class and vegetation structure types for the Midwest Driftless Area, ...

Describing long-term dynamics in oak stands is hindered by a lack of archival data. In this study, archival data from the 1934 inventory of a 673ha area within the Sylamore Experimental Forest were compared to a recent 2002 inventory to quantify changes in forest structure and species composition of this upland oak forest in the Ozark Mountains of Arkansas. When established in 1934, the Sylamor...

Chestnut oak regeneration hotspots were investigated in 52 mature mixed-oak stands in the central Appalachians. Four methods: ranking, SaTScan, ClusterSeer, and classification tree were applied to detect chestnut oak regeneration hotspots. Ranking method provided a quick assessment of the regeneration hotspot; SaTScan and ClusterSeer compromised the spatial correlation among the plots; classifi...

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Evergreen forest communities distributed within 1580-2600 m above sea level (asl) in Kumaun Himalaya were studied. Quercus leucotrichophora A. Campus, Q. floribunda Lindl. ex Rehder Q. semecarpifolia J.E. Smith and Pinus roxburghii Sarg. are the dominant tree species in banj-oak, tilonj-oak, kharsu-oak and chir-pine forests, respectively. Total density for tree, shrub and herb layer varied from...

The mid-altitude zone of the Qinling Mountains in China was once dominated by birch and pine-oak belts but are now mainly covered by secondary growth following large-scale deforestation. Assessing the recovery and sustainability of these forests is essential for their management and restoration. We investigated and compared the tree species composition and community assemblages of secondary for...

We developed new equations to predict Oregon white oak (Quercus garryano Dougl. ex Hook.) development within ORGANON, a stand-development model that is widely used in the Pacific Northwest. Tree size, competitive status, crown ratio, and site productivity were statistically significant predictors of growth and mortality. Three scenarios were projected with the new equations, the previous ORGANO...