Treesearch

Buprestidae (Coleoptera: Buprestoidea) is one of the three wood-borer beetle groups of major phytosanitary interest worldwide, together with Cerambycidae and Scolytinae (Curculionidae). As in other beetle families, some buprestid species have been unintentionally or intentionally introduced around the world, in some cases causing significant environmental and economic damage in the invaded territories. Despite the phytosanitary relevance of the Buprestidae, information regarding the identity of exotic buprestids, their biogeographic areas of origin, introduction pathways, and larval host...

Despite the large body of theory concerning multiple disturbances, relatively few attempts have been made to test the theoretical assumptions of how and if disturbances interact. Of particular importance is whether disturbance events are linked, as this can influence the probability and intensity of ecological change. Disturbances are linked when one disturbance event increases or decreases the likelihood or extent of another. To this end, we used two long-term, multi-disturbance experiments in northern Wisconsin to determine whether earthworm invasion is linked to canopy gap creation and...

The silver fly Leucopis hennigrata McAlpine is a predator of the silver fir wooly adelgid, Adelges nordmannianae (Eckstein), a pest in the European production of Christmas trees. While the fly is known to be a common native predator of the adelgid in Georgia, Turkey, and central Europe, it is absent from northern Europe, where the Christmas tree production is an important industry. Therefore, L. hennigrata has been suggested as a classical biological control agent of Ad. nordmannianae in northern Europe. Here, we evaluated the fly's suitability as a classical biological control agent in...

"The Great Acceleration" poses serious challenges to land managers, policy makers, and all who are interested in the global sustainability of socioecological systems. Methods that can effectively address the uncertainty of the future to allow more robust and adaptive planning and management are urgently needed. We present a case study from northeastern Minnesota to highlight how strategic foresight methods and landscape modeling can serve as complementary tools to generate divergent yet plausible participatory scenarios to ultimately model the potential impacts of these scenarios on...

The first biennial Northern Hardwood Conference (NHC 2021) with the theme "Bridging Science and Management for the Future" took place virtually June 15–16, 2021. This inaugural meeting brought together scientists and managers working in the northern hardwood forests of eastern North America. Articles presented in this proceedings document the diverse subjects, cutting edge science, and state of the art practices exchanged among experts and across the subregions of the northern hardwood range. The topics include People and the Forestry Profession, Regeneration and Biotic Interference, Stand...

Forest restoration of landscapes benefits both biodiversity and multiple stakeholder groups. We examined how the concept of hybrid ecosystem restoration could be employed in invaded lowland wet forest in Hawai′i to examine biological, economic, and sociocultural benefits of restoration. We quantified the market prevalence of all species found within the Liko Nā Pilina experimental plots in comparison to an invaded lowland wet forest reference site with remnant native species. Using a combination of formal market and informal interviews with cultural practitioners, we examined the use of...

Fire–vegetation feedbacks potentially maintain global savanna and forest distributions. Accordingly, vegetation in savanna and forest ecosystems should have differential responses to fire, but fire response data for herbaceous vegetation have yet to be synthesized across biomes. Here, we examined herbaceous vegetation responses to experimental fire at 30 sites spanning four continents. Across a variety of metrics, herbaceous vegetation increased in abundance where fire was applied, with larger responses to fire in wetter and in cooler and/or less seasonal systems. Compared to forests,...

Georgia’s 24.4 million acres of forest are a diverse mix of hardwood and softwood tree species typical of the South. Hardwood forests account for 54.5 percent of the forested area (which includes 1.3 percent in nonstocked) versus 45.5 percent for softwood types. Georgia’s forest resources are considerable and slightly decreasing from 2014 in terms of the number of trees ≥1.0 inch diameter at breast height. The rate at which the State gained forest land acreage from converted agricultural land increased until 2012 and then decreased slightly from 59.5 thousand acres to 34.9 thousand acres....

Background. Sequestration of carbon on forest land is a common and practical component within many climate action plans developed by state or municipal governments. Initial planning often identifies the general magnitude of sequestration expected given the scope of the project. Because age plays a key role in forest carbon dynamics, we summarize both the carbon stock and accumulation rates in live trees by age class and region, allowing managers and policymakers to assess the influence of forest age class structure on forest carbon storage as represented in current inventories. State-level...

Oaks (Quercus spp.) are masting species exhibiting highly variable and synchronized acorn production.We investigated the hypothesis that periodical cicadas (Magicada spp.), well known to have strong effects on the ecosystems in which they occur, affect acorn production of oaks through their xylemfeeding habits as nymphs, the oviposition damage they inflict as adults during emergences, or the nutrient pulse resulting from the decomposition of their bodies following breeding. We found negative effects on acorn production during emergence years and the year following emergences and enhanced...