Author: Lili PerreaultPublisher:
ISBN:
Category :
Languages : en
Pages : 165
Book Description
Quantifying the Contribution of Deadwood and Canopy Openings to Biodiversity and Ecosystem Function in Second-growth Northern Hardwood Forest
Author: Lili PerreaultRestoring Complexity
Author: Long-term Stand Development and Demographic Sustainability of Tree Populations in Northern Hardwood Forests
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
An understanding of trajectories in long-term forest development is essential for examining several fundamental issues in forest ecology and management. Long-term forest development has important implications for issues as diverse as forest productivity, carbon storage, biological diversity, and ecological forestry methods. While much has been learned from studies of old-growth forests, a limitation is that these have necessarily been brief snapshots of species composition and forest structure at one point in time from which accurate trends are difficult to infer. The overarching themes of this dissertation are the long-term trajectory of forest development and the impact of the historic natural disturbance regime on that trajectory. Specific objectives were: (1) to quantify long-term trends in above-ground tree biomass and stand structure in northern hardwood forests, and effects of the natural disturbance regime, (2) to estimate the frequency of structural stand stages, along with residence times and transition rates among stages, under several disturbance regimes, and (3) to develop a quantitative approach to evaluating demographic sustainability of tree populations under several conditions, including those of restricted recruitment. Computer simulation with the CANOPY model was used to clarify long-term trends. However, to the extent possible, these model predictions were verified against available field data, including an extensive field survey and a 30-year record of change on permanent plots in the Porcupine Mountains Wilderness State Park. Major conclusions from this work were: (1) The Bormann-Likens hypothesis of a peak in biomass followed by a decline to a lower level was largely supported by both simulation and field data. The asymptotic biomass trend documented in recent chronosequences may be a consequence of using maximum tree age to estimate stand age. (2) The majority of landscapes of old-growth northern hardwoods is occupied by non-equilibrium stands, but nearly 1/3 was also structurally indistinguishable from steady state. Individual stands were highly dynamic, spending only a few decades in any structural stage. (3) Minimum sustainable tree populations had a variable slope in their size distribution. Enforcing a shallow fixed slope in understory trees typical of those used in uneven-aged management for larger trees rendered the stand unsustainable.
Accelerating the Development of Old-growth Characteristics in Second-growth Northern Hardwoods
Author: Karin S. FassnachtPublisher:
ISBN:
Category : Afforestation
Languages : en
Pages : 33
Book Description
Active management techniques that emulate natural forest disturbance and stand development processes have the potential to enhance species diversity, structural complexity, and spatial heterogeneity in managed forests, helping to meet goals related to biodiversity, ecosystem health, and forest resilience in the face of uncertain future conditions. There are a number of steps to complete before, during, and after deciding to use active management for this purpose. These steps include specifying objectives and identifying initial targets, recognizing and addressing contemporary stressors that may hinder the ability to meet those objectives and targets, conducting a pretreatment evaluation, developing and implementing treatments, and evaluating treatments for success of implementation and for effectiveness after application. In this report we discuss these steps as they may be applied to second-growth northern hardwood forests in the northern Lake States region, using our experience with the ongoing managed old-growth silvicultural study (MOSS) as an example. We provide additional examples from other applicable studies across the region.
Spatial Characteristics of Canopy Disturbances in Riparian Old-growth Hemlock - Northern Hardwood Forests, Adirondack Mountains, New York, USA
Author: Miranda Thomas CurzonPublisher:
ISBN:
Category :
Languages : en
Pages : 146
Book Description
Biodiversity in Dead Wood
Author: Jogeir N. StoklandPublisher: Cambridge University Press
ISBN: 0521888735
Category : Science
Languages : en
Pages : 525
Book Description
A comprehensive overview of wood-inhabiting fungi, insects and vertebrates, discussing habitat requirements along with strategies for maintaining biodiversity.
Growth Response to Thinning of Larger Trees in Older Second-growth Northern Hardwood Forests
Author: Matthew Thomas SingerPublisher:
ISBN:
Category :
Languages : en
Pages : 146
Book Description
Simulation of the Development and Restoration of Old-growth Northern Hardwood Forest
Author: Jungkee ChoiPublisher:
ISBN:
Category : Old growth forests
Languages : en
Pages : 300
Book Description
Volume Tables For Second-Growth Northern Hardwood Forests in Northeastern Wisconsin
Author: Gayne G. ErdmannEcological Silviculture
Author: Brian J. PalikPublisher: Waveland Press
ISBN: 1478645237
Category : Technology & Engineering
Languages : en
Pages : 343
Book Description
Classical silviculture has often emphasized timber models, fundamentally based in production agriculture. This books presents silvicultural methods based in natural forest models—models that emulate natural disturbances and development processes, sustain biological legacies, and allow time to take its course in shaping stands. These methods, dubbed “ecological forestry,” have been successfully implemented by foresters for decades managing a wide variety of forestlands. Ecological silvicultural strategies protect threatened and rare species, sustain biological diversity, and provide habitat for game and non-game species, all while providing timber in profitable ways.