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Harvard Forest Data Archive
HF163
Short-Term Effects on Vegetation in Soil Warming Plus Nitrogen Addition Experiment at Harvard Forest 2006
Related PublicationsData
Overview
- Lead: Sydne Record, Serita Frey, Aaron Ellison
- Investigators:
- Contact: Information Manager
- Start date: 2006
- End date: 2006
- Status: complete
- Location: Prospect Hill Tract (Harvard Forest)
- Latitude: +42.54 degrees
- Longitude: -72.18 degrees
- Elevation: 365 meter
- Datum: WGS84
- Taxa:
- Release date: 2023
- Language: English
- EML file: knb-lter-hfr.163.12
- DOI: digital object identifier
- EDI: data package
- DataONE: data package
- Related links:
- Study type: short-term measurement
- Research topic: large experiments and permanent plot studies
- LTER core area: mineral cycling, disturbance patterns
- Keywords: diversity, nitrogen, soil warming
- Abstract:
The purpose of this experiment is to examine the interactive affects of warming and N additions on plant diversity. The experiment consists of four treatments (control, heated +N, heated -N, +N only) with six replicates per treatment in a completely randomized design. Average soil temperature in the heated plots will be elevated 5 deg C above ambient by the use of buried heating cables placed at 10 cm depth in the soil and spaced 20 cm apart. The heating cables will be controlled by a data logger that monitors thermistors (5 per plot) every 10 min. Plots will automatically turn on and off to maintain a 5 deg C temperature difference between the heated and control plots. The N addition plots (heated +N, +N only) will be fertilized following the protocol of the Chronic Nitrogen Addition Study. An aqueous solution of NH4NO3 will be applied at a rate equivalent to the low N plots at the chronic N study (5 g m-2 yr-1). Fertilizer will be applied in equal monthly doses during the growing season (Apr-Oct). The control plots and unfertilized, heated plots (heated -N) will receive water only.
- Methods:
To sample plants, we counted all stems of every plant in each 3m x 3m plot.
Species codes:
Acepen: Acer pennsylvanicum
Acerub: Acer rubrum
Acerubs: Acer rubrum seedling
Aranud: Aralia nudicaulis
Betale: Betula alleghaniensis
Betlen: Betula lenta
Betspp: Betula sp. (seedling)
Carpen: Carex pensylvanica
Casden: Castanea dentata
Clibor: Clintonia borealis
Craspp: Craetagus species (seedling)
Coptri: Coptis trifolia
Denobs: Dendrolycopodium obscurum
Denpun: Dennstaedtia punctilobula
Dipcom: Diphasiastrum complanatum
Dryspp:Dryopteris species
Faggra: Fagus grandifolia
Gaupro: Gaultheria procumbens
Goopub: Goodyera pubescens
Hupluc: Huperzia lucidula
Lyolig: Lyonia ligustrina
Maican: Maianthemum canadense
Medvir: Medeola virginiana
Mitrep: Mitchella repens
Monuni: Monotropa uniflora
Pinstr: Pinus strobus
Pruser: Prunus serotina
Quealb: Quercus alba
Querub: Quercus rubra
Smirac: Smilacina racemosa
Tribor: Trientalis borealis
Tsucan: Tsuga canadensis
Uvuses: Uvularia sessilifolia
Unkspp: Unknown species (seedling with cotyledons only)
Vaccor: Vaccinium corymbosum
Vacang: Vaccinium angustifolium
Vacvac: Vaccinium vacillans
Vibace: Viburnum acerifolium
Vibden: Viburnum dentatum
Viblen: Viburnum lentago
- Organization: Harvard Forest. 324 North Main Street, Petersham, MA 01366, USA. Phone (978) 724-3302. Fax (978) 724-3595.
- Project: The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts. (ROR).
- Funding: National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210.
- Use: This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.
- License: Creative Commons Zero v1.0 Universal (CC0-1.0)
- Citation: Record S, Frey S, Ellison A. 2023. Short-Term Effects on Vegetation in Soil Warming Plus Nitrogen Addition Experiment at Harvard Forest 2006. Harvard Forest Data Archive: HF163 (v.12). Environmental Data Initiative: https://doi.org/10.6073/pasta/0a4973594937b0e7e7a3cbe8e3f43087.
Detailed Metadata
hf163-01: N plants
- year: year of the experiment 2006
- plot: plot number (1-24)
- treatment: treatment
- 1: Control
- 2: Warm
- 3: Nitrogen
- 4: Warm Nitrogen
- species: species code, see methods
- stems: number of stems (unit: number / missing value: NA)