Michigan's Forests 2009

Pugh, Scott A.; Pedersen, Lawrence D.; Heym, Douglas C.; Piva, Ronald J.; Woodall, Christopher W.; Barnett, Charles J.; Kurtz, Cassandra M.; Moser, W. Keith

doi:10.2737/nrs-rb-66

Cited by 6 publications

(5 citation statements)

References 31 publications

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“…These counties are characterized by human populations of low density (0.12 persons/km 2 in 2012, U.S. Census Bureau 2014) with ample freshwater access and >80% forest land (Pugh et al 2012). Across the three counties, approximately 80% of residents are Caucasian, 10% American Indian, and 6% African-American.…”

Section: Participantsmentioning

confidence: 98%

Assessing impacts of locally designed environmental education projects on students’ environmental attitudes, awareness, and intention to act

Bergman

2015

Environmental Education Research

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This study investigates whether consistent effects on students' environmental attitudes, awareness, and behavioral intentions could be discerned in an initiative that supports environmental education (EE) designed at the classroom level. Students of grades four, five, and seven participated in an assessment at the beginning and end of the school year. Quantitative assessment questions were adapted from the Children's Environmental Perception Scale. Factor analysis identified three factors related to intentions for environmental learning and behavior, environmental appreciation, and awareness of the potential to impact nature. Qualitative items assessed students' perception of their EE experience. Over one school year, fourth-and fifth-grade EE students gained awareness of the potential to impact nature, but EE students did not exhibit changes to environmental appreciation or intentions for environmental learning and behavior. With increasing years of EE experience, students demonstrated slight increases in environmental appreciation and intentions for environmental learning and behavior. Students' recollection of in-class discussions primarily related to cognitive and psychomotor domains, with minimal mention of social or affective themes. Student perspectives highlighted individuals' unique interests, which may not be fostered when all students conduct the same activity. Over a third of all students most enjoyed the EE experience for the chance to be outside, and only five percent most enjoyed gaining environmental knowledge.

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Section: Participantsmentioning

confidence: 98%

Assessing impacts of locally designed environmental education projects on students’ environmental attitudes, awareness, and intention to act

Bergman

2015

Environmental Education Research

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“…The forest stands were all between 80 and 100 years old and the minimum and maximum distance between two sites was 1.6 and 40 km, respectively. Six sites were affected by a forest tent caterpillar ( Malacosoma disstria ) outbreak from 2008 to 2010 [30]. The minimum and maximum distance between two defoliated sites was 3 and 30 km, respectively.…”

Section: Methodsmentioning

confidence: 99%

A Forest Tent Caterpillar Outbreak Increased Resource Levels and Seedling Growth in a Northern Hardwood Forest

Rozendaal¹,

Kobe²

2016

PLoS ONE

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In closed-canopy forests, gap formation and closure are thought to be major drivers of forest dynamics. Crown defoliation by insects, however, may also influence understory resource levels and thus forest dynamics. We evaluate the effect of a forest tent caterpillar outbreak on understory light availability, soil nutrient levels and tree seedling height growth in six sites with contrasting levels of canopy defoliation in a hardwood forest in northern lower Michigan. We compared resource levels and seedling growth of six hardwood species before, during and in the three years after the outbreak (2008–2012). Canopy openness increased strongly during the forest tent caterpillar outbreak in the four moderately and severely defoliated sites, but not in lightly defoliated sites. Total inorganic soil nitrogen concentrations increased in response to the outbreak in moderately and severely defoliated sites. The increase in total inorganic soil nitrogen was driven by a strong increase in soil nitrate, and tended to become stronger with increasing site defoliation. Seedling height growth increased for all species in the moderately and severely defoliated sites, but not in lightly defoliated sites, either during the outbreak year or in the year after the outbreak. Growth increases did not become stronger with increasing site defoliation, but were strongest in a moderately defoliated site with high soil nutrient levels. Growth increases tended to be strongest for the shade intolerant species Fraxinus americana and Prunus serotina, and the shade tolerant species Ostrya virginiana. The strong growth response of F. americana and P. serotina suggests that recurring forest tent caterpillar outbreaks may facilitate the persistence of shade intolerant species in the understory in the absence of canopy gaps. Overall, our results suggest that recurrent canopy defoliation resulting from cyclical forest insect outbreaks may be an additional driver of dynamics in temperate closed-canopy forests.

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“…For demonstration purposes, we chose to conduct our policy experiments in the context of Houghton County, in the Upper Peninsula of Michigan (USA). It is approximately 80% forested, with a mix of hardwood species that are generally fully stocked, with low annual removal rates [98]. Houghton County also faces one of the highest utility rates in the country, making it a prime candidate for bioenergy conversion.…”

Section: Motivationmentioning

confidence: 99%

“…We then filtered out all other properties for the purposes of this demonstration because these other parcels would be ineligible for the biomass VIP of interest in our case study. Characteristic species were selected for the region based upon U.S. Forest Service data [98] and assigned based on NLCD codes (i.e., Red Maple (Acre rubrum) for deciduous forests and woody wetlands, Eastern White Pine (Pinus strobus) for evergreen forests.…”

Section: Preparationmentioning

confidence: 99%

“…First, the NLCD was clipped to the counties that make up the region. The count of pixels for deciduous forest, evergreen forest, mixed first, and woody wetlands was taken and the regional biomass estimate per acre [98] was applied (see Table 3.6). Commercial forests data for the WUP was determined by first clipping the statewide commercial forests to just those in the WUP counties.…”

Section: A Regional Descriptionmentioning

confidence: 99%

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Application of Agent-Based Modeling to Complex Systems

Zupko¹,

Robert²

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Michigan's Forests 2009

Cited by 6 publications

References 31 publications

Assessing impacts of locally designed environmental education projects on students’ environmental attitudes, awareness, and intention to act

Assessing impacts of locally designed environmental education projects on students’ environmental attitudes, awareness, and intention to act

A Forest Tent Caterpillar Outbreak Increased Resource Levels and Seedling Growth in a Northern Hardwood Forest

Application of Agent-Based Modeling to Complex Systems

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