دورية أكاديمية
The variable effects of soil nitrogen availability and insect herbivory on aboveground and belowground plant biomass in an old-field ecosystem.
| العنوان: | The variable effects of soil nitrogen availability and insect herbivory on aboveground and belowground plant biomass in an old-field ecosystem. |
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| المؤلفون: | Blue JD; Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville, TN 37796, USA., Souza L, Classen AT, Schweitzer JA, Sanders NJ |
| المصدر: | Oecologia [Oecologia] 2011 Nov; Vol. 167 (3), pp. 771-80. Date of Electronic Publication: 2011 May 31. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Springer Country of Publication: Germany NLM ID: 0150372 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1432-1939 (Electronic) Linking ISSN: 00298549 NLM ISO Abbreviation: Oecologia Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Berlin ; New York, Springer. |
| مواضيع طبية MeSH: | Environmental Monitoring*, Insecta/*physiology , Nitrogen/*metabolism , Plants/*metabolism , Soil/*chemistry, Animals ; Biomass ; Herbivory/physiology ; Plant Development ; Plants/classification ; Tennessee ; Time Factors |
| مستخلص: | Nutrient availability and herbivory can regulate primary production in ecosystems, but little is known about how, or whether, they may interact with one another. Here, we investigate how nitrogen availability and insect herbivory interact to alter aboveground and belowground plant community biomass in an old-field ecosystem. In 2004, we established 36 experimental plots in which we manipulated soil nitrogen (N) availability and insect abundance in a completely randomized plot design. In 2009, after 6 years of treatments, we measured aboveground biomass and assessed root production at peak growth. Overall, we found a significant effect of reduced soil N availability on aboveground biomass and belowground plant biomass production. Specifically, responses of aboveground and belowground community biomass to nutrients were driven by reductions in soil N, but not additions, indicating that soil N may not be limiting primary production in this ecosystem. Insects reduced the aboveground biomass of subdominant plant species and decreased coarse root production. We found no statistical interactions between N availability and insect herbivory for any response variable. Overall, the results of 6 years of nutrient manipulations and insect removals suggest strong bottom-up influences on total plant community productivity but more subtle effects of insect herbivores on aspects of aboveground and belowground production. |
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| المشرفين على المادة: | 0 (Soil) N762921K75 (Nitrogen) |
| تواريخ الأحداث: | Date Created: 20110601 Date Completed: 20120215 Latest Revision: 20211020 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1007/s00442-011-2028-7 |
| PMID: | 21625980 |
| قاعدة البيانات: | MEDLINE |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 1432-1939 |
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| DOI: | 10.1007/s00442-011-2028-7 |