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Carbon Resources And Ph As Controls Of Microbial And Microarthropod Communities In A Northern Hardwood Forest
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Book Synopsis Carbon Resources and PH as Controls of Microbial and Microarthropod Communities in a Northern Hardwood Forest by : Will R. Kessler
Download or read book Carbon Resources and PH as Controls of Microbial and Microarthropod Communities in a Northern Hardwood Forest written by Will R. Kessler and published by . This book was released on 2002 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Belowground Carbon Dynamics in Northern Hardwood Forests by : Gregory P. Zogg
Download or read book Belowground Carbon Dynamics in Northern Hardwood Forests written by Gregory P. Zogg and published by . This book was released on 1997 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research Honors Program Abstracts by : New York State College of Agriculture and Life Sciences
Download or read book Research Honors Program Abstracts written by New York State College of Agriculture and Life Sciences and published by . This book was released on 2002 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impacts of Climate Change on Soil Microorganisms in Northern Hardwood Forests by : Carley Jane Kratz
Download or read book Impacts of Climate Change on Soil Microorganisms in Northern Hardwood Forests written by Carley Jane Kratz and published by . This book was released on 2014 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: As global climate continues to change, it becomes more important to understand possible feedbacks from soils to the climate system. This dissertation focuses on soil microbial community responses to climate change factors in northern hardwood forests. Two soil warming experiments at Harvard Forest in Massachusetts, and a climate change manipulation experiment with both elevated temperature and increased moisture inputs in Michigan were sampled. The hyphal in-growth bag method was to understand how soil fungal biomass and respiration respond to climate change factors. Our results from phospholipid fatty acid (PLFA) analyses suggest that the hyphal in-growth bag method allows relatively pure samples of fungal hyphae to be partitioned from bacteria in the soil. The contribution of fungal hyphal respiration to soil respiration was examined in climate change manipulation experiments in Massachusetts and Michigan. The Harvard Forest soil warming experiments in Massachusetts are long-term studies with 8 and 18 years of +5 °C warming treatment. Hyphal respiration and biomass production tended to decrease with soil warming at Harvard Forest. This suggests that fungal hyphae adjust to higher temperatures by decreasing the amount of carbon respired and the amount of carbon stored in biomass. The Ford Forestry Center experiment in Michigan has a 2 x 2 fully factorial design with warming (+4-5 °C) and moisture addition (+30% average ambient growing season precipitation). This experiment was used to examine hyphal growth and respiration of arbuscular mycorrhizal fungi (AMF), soil enzymatic capacity, microbial biomass and microbial community structure in the soil over two years of experimental treatment. Results from the hyphal in-growth bag study indicate that AMF hyphal growth and respiration respond negatively to drought. Soil enzyme activities tend to be higher in heated versus unheated soils. There were significant temporal variations in enzyme activity and microbial biomass estimates. When microbial biomass was estimated using chloroform fumigation extractions there were no differences between experimental treatments and the control. When PLFA analyses were used to estimate microbial biomass we found that biomass responds negatively to higher temperatures and positively to moisture addition. This pattern was present for both bacteria and fungi. More information on the quality and composition of the organic matter and nutrients in soils from climate change manipulation experiments will allow us to gain a more thorough understanding of the mechanisms driving the patterns reported here. The information presented here will improve current soil carbon and nitrogen cycling models.
Book Synopsis Seasonal Patterns of Microbial, Biomass and Nitrogen Mineralization in Northern Hardwood Forests by : William E. Holmes
Download or read book Seasonal Patterns of Microbial, Biomass and Nitrogen Mineralization in Northern Hardwood Forests written by William E. Holmes and published by . This book was released on 1993 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Drivers of Soil Organic Carbon in Rich Northern Hardwood Forests by : Sophia Rebecca Marinace
Download or read book Drivers of Soil Organic Carbon in Rich Northern Hardwood Forests written by Sophia Rebecca Marinace and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forests are increasingly being managed for their carbon sequestration potential. As such, an understanding of the factors controlling carbon dynamics across and within sites is becoming increasingly important for guiding carbon management strategies. Given that much of a forest's carbon is stored in soils, identifying the factors that control how much carbon is stored in soils is critical. This study used detailed vegetation and soil measurements across a rich northern hardwood forest in Corinth, Vermont to identify factors that drive soil carbon storage in a northern hardwood forest, a common type in New England, and investigated how multiple non-native species might impact these factors. These forests have a large component of white ash (Fraxinus americana), a species threatened by the invasive emerald ash borer (Agrilus planipennis), creating an urgency to assess how ash trees influence soil organic carbon sequestration, as well as how their mortality may impact future carbon dynamics. Furthermore, non-native earthworms, which have a large impact of forest floor and soil carbon, are impacting these systems. This work quantified how these stressors are affecting carbon storage and tree regeneration. Analysis of organic litter material and mineral soil samples from these areas indicate both earthworms and overstory ash basal area significantly impact leaf litter nitrogen content and leaf litter carbon to nitrogen ratio (C:N); however, there was no interaction between the two factors. Earthworms also significantly decreased soil pH, however it is difficult to disentangle if earthworms are drawn to higher pH areas or if they create these conditions. Conversely, basal area of white ash had a significant, increasing effect on leaf litter pH. Soil pH was the best predictor of soil carbon in the upper soil horizons, and carbon to nitrogen ratio (C:N) in the forest floor was best explained by the interaction of litter pH and earthworm prevalence. Collectively, these results suggest both earthworm and emerald ash borer may alter soil carbon and nutrient dynamics in rich northern hardwood forests and the pathways by which carbon is stored.
Book Synopsis Plant and Microbial Mechanisms of Nitrogen Retention in Northern Hardwood Forests Receiving Atmospheric NO3 Deposition by : William C. Eddy
Download or read book Plant and Microbial Mechanisms of Nitrogen Retention in Northern Hardwood Forests Receiving Atmospheric NO3 Deposition written by William C. Eddy and published by . This book was released on 2006 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rhizosphere Carbon Flux and Rhizosphere Effects on Microbial Activity and Nutrient Availability in Northern Hardwood Forests by : Richard Paul Phillips
Download or read book Rhizosphere Carbon Flux and Rhizosphere Effects on Microbial Activity and Nutrient Availability in Northern Hardwood Forests written by Richard Paul Phillips and published by . This book was released on 2005 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Changes in Microbial Resources and Trophic Niches of Microarthropods in Forest Ecosystems with Elevation by : Johannes Lux
Download or read book Changes in Microbial Resources and Trophic Niches of Microarthropods in Forest Ecosystems with Elevation written by Johannes Lux and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountain forests play a major role for biodiversity conservation, carbon storage and hydrological cycling. Therefore, understanding different components of mountain forest ecosystems is essential to predict potential responses to global climate change. To study such responses, the investigation of elevational gradients is an important tool as they comprise a wide range of climatic variables on a small spatial scale. While changes in aboveground biodiversity along elevational gradients have been studied intensively, information on belowground systems is scarce. Besides studies focusing on li...
Book Synopsis Integrating Management for Old-Growth Characteristics With Enhanced Carbon Storage of Northern Hardwood-Conifer Forests by : Sarah E. Ford
Download or read book Integrating Management for Old-Growth Characteristics With Enhanced Carbon Storage of Northern Hardwood-Conifer Forests written by Sarah E. Ford and published by . This book was released on 2016 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forest management practices emphasizing stand structural complexity are of interest across the northern forest region of the United States because of their potential to enhance carbon storage. Our research is nested within a long-term study evaluating how silvicultural treatments promoting late-successional forest characteristics affect aboveground biomass development in northern hardwood forests. We are testing the hypothesis that biomass development (carbon storage) will be greater in structural complexity enhancement (SCE) treatments when compared to conventional uneven-aged treatments. SCE treatments were compared against selection systems (single-tree and group) modified to retain elevated structure. Manipulations and controls were replicated across 2-hectare treatment units at two study areas in Vermont, USA. Data on aboveground biomass pools (live trees and coarse woody material, standing dead and downed wood) were collected pre- and post-harvest then again a decade later in 2013. Species group-specific allometric equations were used to estimate live and standing dead biomass and downed log biomass was estimated volumetrically. We used Forest Vegetation Simulator to project “no-treatment” baselines specific to treatment units, allowing measured carbon responses to be normalized relative to differences in site-specific characteristics and pre-treatment conditions. Results indicate that 10 years post-harvest biomass development and carbon storage were greatest in SCE treatments compared to conventional treatments, with the greatest increases in coarse woody material (CWM) pools. Structural complexity enhancement treatments contained 12.67 Mg ha-1 carbon in CWM compared to 6.62 Mg ha-1 in conventional treatments and 8.84 Mg ha-1 in areas with no treatment. Percentage differences between post-harvest carbon and baseline values indicate that carbon pool values in SCE treatments returned closest to pre-harvest or untreated levels over conventional treatments. Total carbon storage in SCE aboveground pools was 15.90% below baseline conditions compared to 44.94% less in conventionally treated areas (P = 0.006). Results from CART models indicated treatment as the strongest predictor of aboveground C storage followed by site-specific variables, suggesting a strong influence of both on carbon pools. Structural enhancement treatments have potential to increase carbon storage in managed northern hardwoods based on these results. They offer an alternative for sustainable management integrating carbon, associated climate change mitigation benefits, and late-successional forest structure.
Book Synopsis Microbial Controls on Carbon Fluxes in Forest-to-bog Restoration by : Angela Creevy
Download or read book Microbial Controls on Carbon Fluxes in Forest-to-bog Restoration written by Angela Creevy and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soil Carbon Release Along a Gradient of Physical Disturbance in a Harvested Northern Hardwood Forest by : Lynne M. Zummo
Download or read book Soil Carbon Release Along a Gradient of Physical Disturbance in a Harvested Northern Hardwood Forest written by Lynne M. Zummo and published by . This book was released on 2010 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Cycling of Organic Carbon in the Mineral Soil of a Northern Hardwood Forest Ecosystem by : Joel P. Tilley
Download or read book The Cycling of Organic Carbon in the Mineral Soil of a Northern Hardwood Forest Ecosystem written by Joel P. Tilley and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biotic and Abiotic Control of Microbial Community Structure and Activity in Forest Soils by :
Download or read book Biotic and Abiotic Control of Microbial Community Structure and Activity in Forest Soils written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Carbon Release After Harvest in a Northern Hardwood Forest by : Claire E. Hornig
Download or read book Modeling Carbon Release After Harvest in a Northern Hardwood Forest written by Claire E. Hornig and published by . This book was released on 2013 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Drivers of Microbial Community Composition in a Temperate Forest by : Tijana Martinović
Download or read book Environmental Drivers of Microbial Community Composition in a Temperate Forest written by Tijana Martinović and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, much attention has been focused on the importance of forests to the global carbon cycle. Microorganisms are a critical component of the carbon cycle in forests, participating in important ecosystem processes and degrading various carbon compounds, from simple to highly recalcitrant compounds. However, most studies in this regard have focused on fungi. Only in recent years has it become known that bacteria are also capable of degrading complex plant polymers in soil, and that their contribution to the carbon cycle may be as important as that of fungi. Furthermore, our knowledge of the temporal dynamics of both fungal and bacterial communities is limited, as well as their response to different environmental drivers. The main objective of this dissertation was to fill these knowledge gaps by (1) quantifying the rate of temporal turnover of fungal and bacterial communities in soils of temperate forests, (2) describing the factors that shape fungal communities in spruce and beech stands during their long-term development (stand age), (3) assessing the contribution of fungi and bacteria to the utilisation of different carbon sources in forest soils, and finally (4) describing the development of bacterial communities in response to clearcutting of a spruce stand. The study of microbes responsible for important ecosystem processes, including decomposition and carbon cycling, is of great importance for a possible prediction of the carbon balance response to forestry practices in the context of climate change.
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
