NDLI: Microbial Nitrogen Cycling Response to Calcium and Phosphorus in Northern Hardwood Forest Soils at the Hubbard Brook Experimental Forest, New Hampshire

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Microbial Nitrogen Cycling Response to Calcium and Phosphorus in Northern Hardwood Forest Soils at the Hubbard Brook Experimental Forest, New Hampshire

Content Provider	Semantic Scholar
Author	Minick, Kevan J.
Copyright Year	2009
Abstract	MICROBIAL NITROGEN CYCLING RESPONSE TO CALCIUM AND PHOSPHORUS IN NORTHERN HARDWOOD FOREST SOILS AT THE HUBBARD BROOK EXPERIMENTAL FOREST, NEW HAMPSHIRE by Kevan Joseph Minick Anthropogenic soil acidification appears to be detrimental to forest health in the northeastern US possibly due to reduced microbial activity influencing plant-available nutrients. In a recent study at the Hubbard Brook Experimental Forest, soil microbial activity was not stimulated by increased pH. Therefore, microbial response to increased pH may depend on the level of calcium added or availability of other nutrients. I tested the effects of Ca and phosphorus additions in the field on microbial nitrogen transformations. High Ca addition reduced net N mineralization. Low Ca addition did not affect N transformations, but the combination of Ca/P addition reduced net N mineralization. Phosphorus addition unexpectedly increased gross nitrification. Results from this study indicate that microbial mineralization is not sensitive to moderate differences in pH or limited by P. Therefore, detrimental effects of acidic deposition to these forests are not likely a result of nutrient deficiencies related to suppression of microbial activity. MICROBIAL NITROGEN CYCLING RESPONSE TO CALCIUM AND PHOSPHORUS IN NORTHERN HARDWOOD FOREST SOILS AT THE HUBBARD BROOK EXPERIMENTAL FOREST, NEW HAMPSHIRE
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://etd.ohiolink.edu/!etd.send_file?accession=miami1259884546&disposition=inline
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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