Spatiotemporal Dynamics Of Coarse Woody Debris In A Topographically Complex Old Growth Deciduous Forest
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Author | : Jessica Glynda-Lee Davis |
Publisher | : |
Total Pages | : 35 |
Release | : 2014 |
Genre | : Coarse woody debris |
ISBN | : |
Forest ecosystems are an important sink in the global carbon cycle. Coarse woody debris (CWD, tree remains greater than or equal to 20cm in diameter), which makes up 20% of the aboveground forest biomass, can be an important indicator of historical forest disturbance events and is an important variable for establishing carbon storage baselines. Eighty plots (0.04 ha) located in old-growth temperate deciduous forest within Lilley Cornett Woods Ecological Research Station (LCW), southeastern KY, USA, were used to assess spatial and temporal dynamics in CWD. These plots were sampled for CWD three times (1989, 1999, and 2012) using identical methods and all samples were identified to species, assigned to a decomposition class, and measured in length and width to estimate volume and sample biomass. We found an increasing trend in CWD biomass that was both evenly-distributed across species and exhibited a distinct spatial pattern. The increasing deposition and spatial relationship were explained by recent disturbance events, as well as environmental variables. Because less than 1% of northeastern forests are old growth and climate change alters forest carbon balance, this study satisfies a current need for ongoing documentation of old-growth forests.
Author | : Caroline Louella Caza |
Publisher | : BC, Ministry of Forests, Research Branch |
Total Pages | : 116 |
Release | : 1993 |
Genre | : Science |
ISBN | : |
This project was undertaken to review the ecological role of woody debris in temperate forest eco-systems, with particular emphasis on methods of estimating amounts and turnover rates, and the effects of logging and silvicultural activities on the amounts and behaviour of woody debris; to identify proposed or ongoing research with the Ministry of Forests related to the role of woody debris in the forest of British Columbia; to determine what information is available for the forest types of B.C.; and to identify forest types for which information on quantities or functions of woody debris is lacking and to discuss the research required to fill these gaps.
Author | : |
Publisher | : DIANE Publishing |
Total Pages | : 156 |
Release | : 1996 |
Genre | : |
ISBN | : 1422345688 |
Author | : |
Publisher | : |
Total Pages | : 68 |
Release | : 1994 |
Genre | : Aspen |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 156 |
Release | : 1996 |
Genre | : Biodiversity |
ISBN | : |
Author | : Bengt Gunnar Jonsson |
Publisher | : Wiley-Blackwell |
Total Pages | : 280 |
Release | : 2001-12-21 |
Genre | : Science |
ISBN | : 9788716164322 |
Today dead trees are not only viewed upon as waste and as potential sources of pest species. Instead they have gained an increased attention as key factors for biodiversity in many ecosystems. This change in focus and concern has sparked intense research activities directed to explore the ecological role of dead trees in forest ecosystems. Focus is directed into three main areas: 1) to understand the patterns of woody debris availability in relation to forest stand dynamics and effects of forestry, 2) the role of woody debris in nutrient and particularly carbon dynamics in forest ecosystems, and 3) the pattern and biology of the utilization of woody debris for a large number of wood-dependent species. This volume summarises the present knowledge and presents a set of case studies on the role of dead wood in boreal forests. The focus is on Fennoscandian boreal forests. However, the results presented have a wide applicability and thus the volume may serve as a general introduction to the importance of woody debris in forest ecosystems.
Author | : James Kerr Brown |
Publisher | : |
Total Pages | : 20 |
Release | : 2003 |
Genre | : Coarse woody debris |
ISBN | : |
Author | : Reuben T. Robinson |
Publisher | : |
Total Pages | : 60 |
Release | : 1997 |
Genre | : Coarse woody debris |
ISBN | : |
Coarse woddy debris (CWD) plays a crucial role in the ecological functioning of many terrestrial and aquatic ecosystems. A prominent feature of forests around the world, CWD represents a considerable storage of nutrients and energy in these systems. Forest management practices have tended to reduce quantitites of CWD in many forests. Despite the acknowledged importance of CWD, little is known about how it influences ecological processes in many ecosystems, or of how forest management affects its role in biogeochemical cycling, especially in forested wetlands. This project examined the effect of forest management and flood frequence on the biomass and decay rate of river red gum (Eucalyptus camaldulensis Dehn.) CWD in the Millewa State Forest on the River Murray floodplain in south-eastern Australia. To determine the effect of forest management on quantities of CWD, surveys of CWD biomass were carried out in old-growth (unmanaged) forest, and in managed, frequently flooded and infrequently flooded forests. The rate of decay of CWD in frequently flooded and infrequently flooded forests was measured by assessing weight loss from logs cut over the last 47 years. Total biomass of CWD in the old-growth, frequently flooded river red gum forest in this study was typical of old-growth forests studied in other countries, although the biomass of fallen CWD was relatively high. Total CWD biomass in the old-growth, frequently flooded forest was significantly greater than in managed, frequently flooded and managed, infrequently flooded forests, which were not significantly different. Wood decay rates (k) were 0.0041 y-1 for frequently flooded samples, and 0.0045 y-1 for infrequently flooded samples. These rates are very low by world standards. Turnover of CWD in old-growth forest was greater than in both managed frequently flooded and managed, infrequently flooded forests. In frequently flooded, managed forest, leaf litter had a greater turnover than CWD. Storage of nitrogen in CWD in both old-growth, frequently flooded and managed, frequently flooded forests was greater than storage in leaf litter. In river red gum forests, CWD may be more important as a storage of nutrients and energy than as a contributor to organic matter turnover. Forest management has substantially reduced quantities of CWD in the Millewa forests, but frequency of flooding has little influence on decay of red gum CWD during the first 47 years after logging.0.
Author | : M. B. Adams |
Publisher | : |
Total Pages | : 8 |
Release | : 2001 |
Genre | : Forest litter |
ISBN | : |
Author | : Bruce Martin Peffers |
Publisher | : |
Total Pages | : 156 |
Release | : 1995 |
Genre | : Forests and forestry |
ISBN | : |