Litter decomposition and nutrient dynamics in oak–hickory forests along a historic gradient of nitrogen and sulfur deposition

Kuperman, Roman G.

doi:10.1016/s0038-0717(98)00105-9

Cited by 66 publications

(41 citation statements)

References 35 publications

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“…Melillo et al 1982). Leaf litter decomposition often increases along N-deposition gradients in terrestrial (Fenn and Dunn 1989;Kuperman 1999) and aquatic environments (Gulis et al 2004;Ferreira et al 2006). These observations imply that litter decomposition is N-limited.…”

Section: Introductionmentioning

confidence: 99%

Simulated nitrogen deposition affects wood decomposition by cord-forming fungi

et al. 2011

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Anthropogenic nitrogen (N) deposition affects many natural processes, including forest litter decomposition. Saprotrophic fungi are the only organisms capable of completely decomposing lignocellulosic (woody) litter in temperate ecosystems, and therefore the responses of fungi to N deposition are critical in understanding the effects of global change on the forest carbon cycle. Plant litter decomposition under elevated N has been intensively studied, with varying results. The complexity of forest floor biota and variability in litter quality have obscured N-elevation effects on decomposers. Field experiments often utilize standardized substrates and N-levels, but few studies have controlled the decay organisms. Decomposition of beech (Fagus sylvatica) blocks inoculated with two cord-forming basidiomycete fungi, Hypholoma fasciculare and Phanerochaete velutina, was compared experimentally under realistic levels of simulated N deposition at Wytham Wood, Oxfordshire, UK. Mass loss was greater with P. velutina than with H. fasciculare, and with N treatment than in the control. Decomposition was accompanied by growth of the fungal mycelium and increasing N concentration in the remaining wood. We attribute the N effect on wood decay to the response of cord-forming wood decay fungi to N availability. Previous studies demonstrated the capacity of these fungi to scavenge and import N to decaying wood via a translocating network of mycelium. This study shows that small increases in N availability can increase wood decomposition by these organisms. Dead wood is an important carbon store and habitat. The responses of wood decomposers to anthropogenic N deposition should be considered in models of forest carbon dynamics.

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Section: Introductionmentioning

confidence: 99%

Simulated nitrogen deposition affects wood decomposition by cord-forming fungi

et al. 2011

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“…Conversely, the lower concentrations of N, C and organic matter in soil at the motorway than rural site (III) could have contributed to the slower decay at the motorway site. Findings on the effects of elevated N deposition or soil N on decay rate have been controversial, ranging from stimulating to no or retarding effects (Koopmans et al 1998, Magill and Aber 1998, Kuperman 1999, Prescott et al 1999, Berg 2000. However, the review by Fog (1988) concludes that in the case of easily degradable material, such as deciduous leaf litter, N additions often promote early decomposition.…”

Section: Urbanization Accelerates Leaf Litter Decompositionmentioning

confidence: 99%

European aspen and hybrid aspen under changing environment – Leaf traits, growth and litter decomposition

Nikula¹

2011

Diss. For.

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“…The molar ratio of Ca to Al is a useful indicator of stress in forest ecosystems, particularly that caused by acid deposition (Cronan and Grigal 1995), and low Ca:Al ratios (less than 0.5) indicate an increased likelihood of negative impacts on tree growth. Additionally, deposition of nitrogen increases litter decay rates (Kuperman 1999) with the potential to negatively affect the forest through nitrogen saturation (Aber 1992).…”

Section: Lichen Species Richnessmentioning

confidence: 99%

Ohio forests: 2006

Widmann¹,

Balser²,

Barnett³

et al. 2009

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Foreword Forests at a tipping pointOhio's forests are a critical component of the state's natural resources. Covering nearly 8 million acres, or 30 percent of the state, these diverse forests support important biological communities and create habitat for wildlife, forest products, clean water, and opportunities for recreation. Essential to making sound decisions about Ohio's forests is credible information. Forest Inventory and Analysis (FIA) data help fill this need. Such data tell us where we are and where we are going, and they provide the basis for making informed decisions about how we can sustain our forests for future generations.The fifth inventory of Ohio's forests suggests that we are at a tipping point. Ohio's forests hold more wood, provide more wildlife habitat, and store more carbon than 15 years ago. Yet, for the first time since the 1940s, the acreage of Ohio's forest land has not increased, and some parts of the state have seen large losses in forest cover. More Ohioans than ever own forest land and enjoy the many benefits that forests provide. But, as Ohio's forest lands are subdivided and fragmented, the ability of these forests to provide timber, wildlife habitat, recreation, and solitude is reduced. Oak-hickory forests make up over one-half of the state's forests. Oaks as seedlings and saplings, however, have declined in abundance, and oaks will likely play a smaller role in Ohio's future forests. The quality and value of our timber has increased during the past 15 years, and landowners intend to harvest trees on onefifth of Ohio's forested acres in the next 5 years. However, only 4 percent of forest landowners have a formal management plan for their forests, and fewer than one in seven seeks any sort of advice before making decisions that will affect them and their forests for decades.John F. Kennedy said: "It is our task in our time and in our generation, to hand down undiminished to those who come after us, as was handed down to us by those who went before, the natural wealth and beauty which is ours." The data presented in this report clearly highlight the challenges our forests face: fragmentation, uninformed management, loss of oak, invasive species, and a host of other concerns. How we address these concerns, how we balance forest conservation and sustainable use, will determine the forests that future generations experience and the benefits they receive. Doubtless, the FIA reports of tomorrow will document the successes, or the failures, of the choices we make today. IntroductionThis is the fifth inventory of Ohio's forests, the first using a new annualized inventory system. Previous inventories were completed for 1952 (Hutchison and Morgan 1956), 1968(Kingsley and Mayer 1970), 1979(Dennis and Birch 1981), and 1991(Griffith et al. 1993. These inventories provided a snapshot of the forest for specific periods in time after which no new information was available until the next full inventory of the State. Henceforth, inventory data for the State will be updated annually and full rem...

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Litter decomposition and nutrient dynamics in oak–hickory forests along a historic gradient of nitrogen and sulfur deposition

Cited by 66 publications

References 35 publications

Simulated nitrogen deposition affects wood decomposition by cord-forming fungi

Simulated nitrogen deposition affects wood decomposition by cord-forming fungi

European aspen and hybrid aspen under changing environment – Leaf traits, growth and litter decomposition

Ohio forests: 2006

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