Experiments
Experiment 247 - Nutrient Network. A cross-site investigation of bottom-up control over herbaceous plant community dynamics and ecosystem function.
This experiment is one implementation of a globally distributed experiment, known as the Nutrient Network. At Cedar Creek, as in over 70 other sites in grasslands around the world, the experiment aims to describe impacts of increased nutrients (nitrogen, phosphorus, potassium, sulfur and other metals) and decreased herbivory (removal of mammals by fencing).
Two overarching questions are being explored with these manipulations:
1. To what extent are plant production and diversity co-limited by multiple nutrients in herbaceous-dominated communities?
2. Under what conditions do grazers or fertilization control plant biomass, diversity, and
composition?
By utilizing identical protocols at diverse grassland sites around the world, NutNet aims to uncover both the generalities in ecosystem functioning, and the contingencies or differences which can obscure those common mechanisms.
In addition to the standard NutNet protocol, e247 includes an additional low Nitrogen gradient (1 gram Nitrogen per meter squared per year and 5 grams Nitrogen per meter squared per year in addition to the standard 10 grams Nitrogen per meter squared per year).
Datasets
| Dataset ID | Title | Range of Years (# years with data) |
|---|---|---|
| adbe247 | 2007 pre-treatment soils pH, nutrients, texture | 2007-2007 (1 year) |
| acue247 | Aboveground Standing Crop Biomass | 2007-2020 (14 years) |
| azye247 | In situ soil respirations throughout the 2020 growing season across an N fertilization gradient | 2019-2019 (1 year) |
| adae247 | Light Availability | 2008-2020 (10 years) |
| afre247 | Mechanisms driving the soil organic matter decomposition response to nutrient enrichment | 2014-2014 (1 year) |
| aeme247 | Multi-site grassland plant biomass, species richness and light (PAR) | 2007-2012 (5 years) |
| azze247 | Net ecosystem exchange measurements throughout the 2020 growing season across an N fertilization gradient | 2019-2019 (1 year) |
| aige247 | Nutrient Network Oak Litter Decomposition | 2010-2018 (8 years) |
| acze247 | Plant Species Composition percent cover | 2007-2020 (14 years) |
| ayye247 | Plant above and belowground biomass across an N fertilization gradient after 13 years of fertilization | 2019-2019 (1 year) |
| ahne247 | Plant and soil organic matter responses to ten years of nutrient enrichment in the Nutrient Network | 2016-2018 (2 years) |
| afje247 | Soil nutrient analysis | 2012-2012 (1 year) |
| aeve247 | Soil organic matter responses to nutrient enrichment in the Nutrient Network | 2012-2012 (1 year) |