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Natural Areas Journal Journal
Papers
An important component of many fens is large mounds created by ants, for nesting purposes. Because these mounds differ in microtopography, hydrology, and soil characteristics from the surrounding fell, they have the potential to strongly influence fell vegetation. This study exam...
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Climate warming is predicted to cause boreal forests in the Boundary Waters Canoe Area Wilderness (BWCAW), Minnesota, to shift to savanna and/or temperate forest in the next century. Invasive earthworms, exotic tree pests, and deer overabundance will magnify the impacts of warmer...
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Grassland restoration attempts to rehabilitate and/or re-create biologically diverse native plant communities using a variety of management techniques including seeding, burning, grazing, and most recently using herbicides. Herbicides are an important tool for suppressing weed co...
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Protection and management of tallgrass prairie remnants are critical to the continued existence of this rare ecosystem. While effects of individual management events (especially fire and grazing) are understood relatively well, their combined, long-term effects are more difficult...
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Mitchell's satyr (Neonympha mitchellii mitchellii French) is listed by the U.S. Fish and Wildlife Service as endangered in the United States. Of the slightly more than 30 known historical populations, eleven extant populations are known from Michigan and one from Indiana. The but...
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Legislative and agency mandates require that natural area planners and managers establish standards of quality for both biophysical and social indicators. In particular, managers of designated wilderness and other protected areas are challenged to specify indicators and standards...
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The estimation of year of germination based on saguaro cactus (Carnegiea gigantea) growth rates is essential for understanding population dynamics. To assess how habitat and climate interact to influence growth rate, we resurveyed 614 saguaro cacti on 11 historical study plots in...
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Prairie fens, rare peatland features of the landscape of the midwestern United States, are often fire-managed to restore or maintain species diversity and prevent shrub and tree invasion. We quantified the effects of such management at Bluff Spring Pen Nature Preserve (Cook Count...
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We evaluated components of Floristic Quality Assessment, a system which assesses natural areas based upon mean conservatism scores and richness of vascular plants, as well as a related procedure for estimating site wetness. These involve listing all native and adventive (non-nati...
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Japanese knotweed (Fallopia japonica) is an herbaceous invader in North America and Europe with the ability to recruit via several modes (seeds, rhizome, and stem fragments). Within US riparian forests where Japanese knotweed invades, disturbances are common over space and time i...
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Japanese barberry (Berberis thunbergii DC.) has rarely been observed to experience noticeable defoliation from insect or mammal herbivores, and this freedom from enemies is presumed to contribute to its invasiveness. However, during the summer of 2007, 1 observed extensive defoli...
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The genetic memory of complex ecosystems that has evolved over millennia does not adapt well to changing management styles, varied objectives, nor different organizational philosophies. Adopted from Dr. Gerould Wilhelm, Conservation Design Forum
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We studied the long-term demographic structure of the endangered hemiparasitic plant, Schwalbea americana (American chaffseed), in the New Jersey Pine Barrens from 1991 to 2020 in order to address important questions about its population biology, life history, and responses to ma...
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Kuenzler's hedgehog cactus (Echinocereus fendleri var. kuenzleri [Castetter, P. Pierce & K.H. Schwer.] L.D. Benson) is a federally listed threatened species found in pinyon-juniper habitats in south-central New Mexico, USA. Little is known about effects of prescribed fire on this...
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The presence of very large, open-grown oaks has been suggested as an indicator of presettlement savanna. Increment cores taken from seven large-diameter (85-160 cm), open-grown bur oaks in a central Illinois prairie grove (Funk's Grove, McLean County) indicate that these trees we...
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Land managers face the challenge of conserving medicinal plants that may be threatened by harvest pressure, often with limited biological information available to inform management decisions. Osha (Ligusticum porteri) is an important medicinal plant whose roots are harvested as a...
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