Differences in spatial autocorrelation (SAc), plant species richness and diversity, and plant community composition in grazed and ungrazed grasslands along a moisture gradient, North Dakota, USA

2013 ◽  
Vol 17 (1) ◽  
pp. 53-62 ◽  
Author(s):  
Lindsey M. Meyers ◽  
Edward S. DeKeyser ◽  
Jack E. Norland
Keyword(s):  
Species Richness ◽  
Spatial Autocorrelation ◽  
North Dakota ◽  
Community Composition ◽  
Plant Species ◽  
Plant Community ◽  
Plant Species Richness ◽  
Moisture Gradient ◽  
Plant Community Composition ◽  
Species Richness And Diversity

scholarly journals The invasive herb Lupinus polyphyllus can reduce plant species richness independently of local invasion age

2021 ◽  
Author(s):  
Marju Prass ◽  
Satu Ramula ◽  
Miia Jauni ◽  
Heikki Setälä ◽  
D. Johan Kotze
Keyword(s):  
Species Richness ◽  
Plant Species ◽  
Plant Community ◽  
Plant Communities ◽  
Vascular Plant ◽  
Plant Species Richness ◽  
Ecological Impacts ◽  
Plant Community Composition ◽  
Lupinus Polyphyllus ◽  
Local Invasion

AbstractThe ecological impacts of invasive species may change or accumulate with time since local invasion, potentially inducing further changes in communities and the abiotic environment. Yet, time since invasion is rarely considered when investigating the ecological impacts of invasive non-native species. To examine the effect of time since invasion on the ecological impacts of Lupinus polyphyllus, a perennial nitrogen-fixing herb, we surveyed vascular plant communities in the presence and absence of L. polyphyllus in young, intermediate, and old semi-natural grassland sites (ca. 5, 10, 15 years representing both time since lupine invasion and plant community age). We analyzed vascular plant community composition, vascular plant species richness, and the cover of various ecological plant groups and L. polyphyllus. In contrast to our hypotheses, we found no change in the mean cover of L. polyphyllus (about 35%) with time since local invasion, and an ordination did not suggest marked changes in plant community composition. L. polyphyllus was associated with lower species richness in invaded plant communities but this effect did not change with time since invasion. Invaded plant communities were also associated with lower occurrence of generalist, oligotrophic (low-nutrient-adapted) and copiotrophic (nutrient-demanding) species but no temporal dynamics were detected. We conclude that even the intermediate cover of L. polyphyllus can reduce plant species richness, but the ecological impact caused by this invader might not dramatically change or accumulate with time since invasion.

scholarly journals Plant community composition and species richness in the High Arctic tundra: From the present to the future

2017 ◽  
Vol 7 (23) ◽  
pp. 10233-10242 ◽  
Author(s):  
Jacob Nabe-Nielsen ◽  
Signe Normand ◽  
Francis K. C. Hui ◽  
Laerke Stewart ◽  
Christian Bay ◽  
...  
Keyword(s):  
Species Richness ◽  
Community Composition ◽  
Plant Community ◽  
Arctic Tundra ◽  
High Arctic ◽  
Plant Community Composition ◽  
The Future

Plant species richness and diversity in urban and peri-urban gardens of Niamey, Niger

2009 ◽  
Vol 77 (3) ◽  
pp. 159-179 ◽  
Author(s):  
Hannah Bernholt ◽  
Katja Kehlenbeck ◽  
Jens Gebauer ◽  
Andreas Buerkert
Keyword(s):  
Species Richness ◽  
Plant Species ◽  
Plant Species Richness ◽  
Urban Gardens ◽  
Species Richness And Diversity

scholarly journals Response of plant community composition and productivity to warming and nitrogen deposition in a temperate meadow ecosystem

2014 ◽  
Vol 11 (5) ◽  
pp. 6647-6672 ◽  
Author(s):  
T. Zhang ◽  
R. Guo ◽  
S. Gao ◽  
J. X. Guo ◽  
W. Sun
Keyword(s):  
Species Richness ◽  
Community Composition ◽  
Plant Community ◽  
Plant Productivity ◽  
Plant Community Composition ◽  
Experimental Warming ◽  
N Addition ◽  
Meadow Steppe ◽  
Aboveground Productivity ◽  
Belowground Productivity

Abstract. Climate change has profound influences on plant community composition and ecosystem functions. However, its effects on plant community composition and net primary productivity are not well understood. A field experiment was conducted to examine the effects of warming, nitrogen (N) addition, and their interactions on plant community composition and productivity in a temperate meadow ecosystem in northeast China. Experimental warming significantly increased species richness, evenness and diversity, by contrast, N addition highly reduced species richness, evenness and diversity. Warming reduced the importance value of gramineous species but increased in forbs, N addition had the opposite effect. Warming had a significant positive effect on belowground productivity, but had a negative effect on aboveground biomass. The influences of warming on aboveground productivity were dependent on precipitation. Experimental warming had little effect on aboveground productivity in the years with higher precipitation, but significantly suppressed the growth of aboveground in dry years. Our results suggest that warming had indirect effects on plant productivity via altering water availability. Nitrogen addition significantly increased above- and belowground productivity, suggesting that N is one of the most important limiting factors which determine plant productivity in the studied meadow steppe. Significant interactive effects of warming plus N addition on belowground productivity were also detected. Our observations revealed that climate changes (warming and N deposition) plays significant roles in regulating plant community composition and productivity in temperate meadow steppe.

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