Treesearch

Agricultural and forestry advisers and other technical service providers play an important role in supporting farmers and foresters to adapt to climate change. However, not all agricultural and forestry advisers are comfortable talking about climate change with land managers. While there is a demonstrated interest related to climaterelated professional development, few examples of curricula developed with the express purpose of serving this audience and a systematic review of these curricula has not been conducted. To address this gap, we reviewed 12 curricula which were developed and...

We develop an acceptance sampling approach for surveillance of the emerald ash borer (EAB), a harmful forest pest, in Winnipeg, Canada. We compare sampling strategies computed with two different management objectives. The first objective maximizes the expected area with detected infestations and the second objective minimizes the expected number of undetected infested trees in sites that were not inspected or where inspection did not find an infestation. The choice of the management objective influences the survey strategy: achieving the first objective involves selecting sites with high...

Of the many ecosystem services, hydrologic services are arguably one of the most critical for sustaining human societies and yet one of the most threatened. With growing global dangers of water scarcity and declining water quality (Liu et al. 2017), payment for hydrologic service (PHS) programs have surged over the past two decades (Goldman-Benner et al. 2012; Kaplowitz et al. 2012; Leimona et al. 2015; Postel and Thompson 2005; Porras et al. 2008; Stanton et al. 2010). By connecting ecosystem service "suppliers" and "consumers" in ways that explicitly incorporate a market value for such...

Northern hardwood stands in the Great Lakes region are often managed using single-tree selection, which generally favors regeneration of shade-tolerant species, especially sugar maple (Acer saccharum Marsh.) and may reduce regeneration of midtolerant and shade-intolerant species. These forests also tend to have lower microsite diversity than old-growth stands, which may negatively affect the regeneration of light-seeded species, including yellow birch (Betula alleghaniensis Britton). The objective of this research was to determine the initial effects of gap size and gap cleaning on tree...

Land system science can inform decision making to address societally important issues, including food, energy, and water security, livelihoods and lifestyles, biodiversity loss, and climate change. There is growing experience among scientists and practitioners with land systems as a transdisciplinary science. Most often, this experience has accumulated through short-term projects. However, there is a need for durable, longterm land system science platforms to address diverse types of complex, wicked problems, from immediate crises and emergencies over days and weeks; to sudden events over...

In Focus: Hunter, M. D., & Kozlov, M. V. (2019) The relative strengths of rapid and delayed density-dependence acting on a terrestrial herbivore change along a pollution gradient. Journal of Animal Ecology, 88, 665–676. Teasing apart the interactions between biotic and abiotic factors affecting animal population dynamics is a difficult task when based solely on the analysis of natural populations. Experimental manipulations of systems using microcosm studies can be powerful tools for probing such interactions, but microcosms are ultimately limited by their lack of complexity compared with...

Poorly planned development, resource over-exploitation to feed expanding per capita consumption, and climate change interact to diminish native biodiversity, degrade natural resources, and compromise human well-being in urban and urbanizing environments. Because urban dwellers are expected to represent 60 percent of people on Earth by 2030 (UNFP 2007), these impacts are extensive. Innovative approaches to reducing impacts of urban living are being sought across the United States, providing compelling counter-examples of how communities are creatively meeting challenges by enhancing...

Massive social-ecological disturbance and disasters have struck the United States within recent years. In 2017 alone, the country dealt with devastation, destruction, and displacement from three major hurricanes, a nearly unprecedented wildfire season, and senseless acts of violence and terrorism. The scope and scale of these disasters requires appropriate, large-scale coordinated emergency response and recovery efforts. Many of our colleagues have expressed, through their experiences in this book, that there is a need to acknowledge that longer-term mitigation and adaptation are critical...

Kitty and Tom Stoner traveled to London some years ago, but arrived too early to check into their hotel. Deciding to take a walk, they discovered a small park. The modest but beautiful garden was nestled within a ring of buildings near the city center, similar to spaces found in cities throughout the world. The Stoners were enthralled by this simple place and chance encounter, and made follow-up visits. The space offered a comforting enclosure, and distinct entryways marked transition from a hectic streetscape to a quiet enclave. Informal paths encouraged movement throughout the space,...

More than half of the world's population lives in urban areas. By 2050, that number is expected to increase to at least 70 percent—and the densest of these areas will be concentrated in Asia and Africa. Cities around the world are feeling the strain of increasing population density. Unplanned urban growth has placed heavy pressures on resources and infrastructure. This intensification has led to land use and tenure issues, rising poverty and unemployment, an increasing gap in wealth distribution, and further marginalization of disinvested populations. Approximately 1 billion urban (and...