Nitrogen Limitation In Hardwood Forest

Co limitation of n and p is common in freshwater marine and terrestrial environments according to an analysis across.

Nitrogen limitation in hardwood forest. 1 1 running head. We tested whether nitrogen n or phosphorus p limit the mineralization of soil organic c soc or that of added c sources in the oe horizon of successional and mature northern hardwood forests in three locations in central new hampshire usa. Although temperate forests are assumed to be nitrogen n limited current n deposition and possible ecosystem n saturation trends suggest that forests could become phosphorus p limited this p limitation scenario is exacerbated in those forests with acidic soils or receiving significant anthropogenic acid deposition such as mixed deciduous forests of the northeastern. The weathering of parent material is the primary source of ca mg k and p in soils and.

Can j forest res 32 1763 1775. Howarth rw 1991 nitrogen limitation on land and in the sea. A factorial fertilization experiment in temperate hardwood forests ruth d. Fisk mc fahey tj 2001 microbial biomass and nitrogen cycling response to fertilization and litter removal in young northern hardwood forests.

A conceptual model of fluxes and storage pools of n in the northeastern us hardwood forests. Atmospheric deposition vector 2 is the major input flux of nitrogen to the forest. Regardless the fertilization experiment is a stronger test of limitation and it is clear that ca 2 is an important growth limiting nutrient in juvenile and adult phases of the a. Denitrification vector 6 and leaching vector 1 and 3 are the major output fluxes of nitrogen from the ecosystem.

Phosphorus limitation in hardwood forests 2 title. Swank wt wade jb crossley jr da todd rl 1981 insect defoliation enhances nitrate export from forest ecosystems. Added n reduced mineralization of c from soc and from added leaf litter and cellulose. Effects of rock derived nutrients on nitrogen cycling in northern hardwood forests 59 pages 5 tables 8 figures 2014.

Yanai 1 kara e. Nitrogen versus phosphorus limitation. Effects of an intense ice storm on the structure of a northern hardwood forest. Phosphorus limitation of aboveground production in northern hardwood forests 3 authors.

Shinjini goswami1 melany c. Saccharum life cycle in northern hardwood forests of eastern north america. Fahey5 5 6 1department of biology miami university oxford oh usa 7 2earth systems research center university of. Description while much research over the past 30 years has focused on the deleterious effects of excess n on forests and associated aquatic ecosystems recent declines in atmospheric n deposition and unexplained declines in n export from these ecosystems have raised new concerns about n oligotrophication limitations of forest productivity and the capacity for forests to respond dynamically.

Gonzales 1 shinjini goswami 2 shiyi li 3 melany c. How can it occur.