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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Impacts of nitrogen addition on plant biodiversity in mountain grasslands depend on dose, application duration and climate: a systematic review
|
|---|---|
| Published in |
Global Change Biology, July 2015
|
| DOI | 10.1111/gcb.12986 |
| Pubmed ID | |
| Authors |
Jean-Yves Humbert, John M Dwyer, Aline Andrey, Raphaël Arlettaz |
| Abstract |
Although the influence of nitrogen (N) addition on grassland plant communities has been widely studied, it is still unclear whether observed patterns and underlying mechanisms are constant across biomes. In this systematic review, we use meta-analysis and meta-regression to investigate the influence of N addition (here referring mostly to fertilisation) upon the biodiversity of temperate mountain grasslands (including montane, subalpine and alpine zones). Forty-two studies met our criteria of inclusion, resulting in 134 measures of effect size. The main general responses of mountain grasslands to N addition were increases in phytomass and reductions in plant species richness, as observed in lowland grasslands. More specifically, the analysis reveals that negative effects on species richness were exacerbated by dose (ha(-1) year(-1) ) and duration of N application (years) in an additive manner. Thus, sustained application of low to moderate levels of N over time had effects similar to short term application of high N doses. The climatic context also played an important role: the overall effects of N addition on plant species richness and diversity (Shannon index) were less pronounced in mountain grasslands experiencing cool rather than warm summers. Furthermore, the relative negative effect of N addition on species richness was more pronounced in managed communities, and was strongly negatively related to N-induced increases in phytomass, i.e. the greater the phytomass response to N addition, the greater the decline in richness. Altogether, this review not only establishes that plant biodiversity of mountain grasslands is negatively affected by N addition, it also demonstrates that several local management and abiotic factors interact with N addition to drive plant community changes. This synthesis yields essential information for a more sustainable management of mountain grasslands, emphasizing the importance of preserving and restoring grasslands with both low agricultural N application and limited exposure to N atmospheric deposition. This article is protected by copyright. All rights reserved. |
X Demographics
The data shown below were collected from the profiles of 4 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Australia | 1 | 25% |
| Italy | 1 | 25% |
| United Kingdom | 1 | 25% |
| Unknown | 1 | 25% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 2 | 50% |
| Scientists | 2 | 50% |
Mendeley readers
The data shown below were compiled from readership statistics for 200 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Mexico | 1 | <1% |
| United States | 1 | <1% |
| Uruguay | 1 | <1% |
| Unknown | 197 | 99% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 46 | 23% |
| Researcher | 36 | 18% |
| Student > Master | 18 | 9% |
| Student > Doctoral Student | 15 | 8% |
| Student > Bachelor | 9 | 5% |
| Other | 31 | 16% |
| Unknown | 45 | 23% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 73 | 37% |
| Environmental Science | 58 | 29% |
| Social Sciences | 4 | 2% |
| Unspecified | 3 | 2% |
| Earth and Planetary Sciences | 3 | 2% |
| Other | 6 | 3% |
| Unknown | 53 | 27% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 December 2015.
All research outputs
#14,573,503
of 24,453,338 outputs
Outputs from Global Change Biology
#5,276
of 6,081 outputs
Outputs of similar age
#128,445
of 268,096 outputs
Outputs of similar age from Global Change Biology
#42
of 55 outputs
Altmetric has tracked 24,453,338 research outputs across all sources so far. This one is in the 39th percentile – i.e., 39% of other outputs scored the same or lower than it.
So far Altmetric has tracked 6,081 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 34.8. This one is in the 12th percentile – i.e., 12% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 268,096 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 50% of its contemporaries.
We're also able to compare this research output to 55 others from the same source and published within six weeks on either side of this one. This one is in the 20th percentile – i.e., 20% of its contemporaries scored the same or lower than it.