Impacts of nitrogen addition on plant species richness and abundance: A global meta‐analysis
By Gabriele Midolo, Rob Alkemade, Aafke M. Schipper, Ana Benítez‐López, M. Perring, W. de Vries. Global Ecology and Biogeography, 2018
343 citations recorded by the source corpus.
Aim: Experimental nitrogen (N) addition (fertilization) studies are commonly used to quantify the impacts of increased N inputs on plant biodiversity. However, given that plant community responses can vary considerably among individual studies, there is a clear need to synthesize and generalize findings with meta-analytical approaches. Our goal was to quantify changes in species richness and abundance in plant communities in response to N addition across different environmental contexts, while controlling for different experimental designs. Location: Global. Time period: Data range: 1985-2016; Publication years: 1990-2018. Major taxa studied: Plants. Methods: We performed a meta-analysis of 115 experiments reported in 85 studies assessing the effects of N addition on terrestrial natural and semi-natural plant communities. We quantified local-scale changes in plant biodiversity in relationship to N addition using four metrics: species richness (SR), individual species abundance (IA), mean species abundance (MSA) and geometric mean abundance (GMA). Results: For all metrics, greater amounts of annual N addition resulted in larger declines in plant diversity. Additionally, MSA decreased more steeply with N that was applied in reduced (NH4+) rather than oxidized (NO3-) form. Loss of SR with increasing amounts of N was found to be larger in warmer sites. Furthermore, greater losses of SR were found in sites with longer experimental durations, smaller plot sizes and lower soil cation exchange capacity. Finally, reductions in the abundance of individual species were larger for N-sensitive plant life-form types (legumes and non-vascular plants). Main conclusions: N enrichment decreases both SR and abundance of plants in N-addition experiments, but the magnitude of the response differs among biodiversity metrics and with the environmental and experimental context. This underlines the importance of integrating multiple dimensions of biodiversity and relevant modifying factors into assessments of biodiversity responses to global environmental change.
Subfields: Ecology, Nature and Landscape Conservation, Soil Science
View Paper: https://www.semanticscholar.org/paper/63063d172b4eeaf0704d3d5e66b08271e98794ab
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Ecology
In Nature and Landscape Conservation
Citations in the corpus
- A review of the interactions between biodiversity, agriculture, climate change, and international trade: research and policy priorities (2021, background): “g.(42,43)) and, more recently, the impacts that biodiversity can have on food production, 189 via the provision of services such as pollination and pest control(44), or through improved system 190 resilience(45,46).”