Nutrient enrichment increases plant biomass and exotic plant proportional cover independent of warming in freshwater wetland communities

Plant Ecology ◽  
2017 ◽  
Vol 218 (7) ◽  
pp. 835-842 ◽  
Author(s):  
Maria M. Meza-Lopez ◽  
Evan Siemann
Keyword(s):  
Nutrient Enrichment ◽  
Plant Biomass ◽  
Freshwater Wetland ◽  
Exotic Plant ◽  
Proportional Cover

Changes in plant biomass in fens in the vechtplassen area, as related to nutrient enrichment

1996 ◽  
Vol 30 (2-3) ◽  
pp. 227-237 ◽  
Author(s):  
J. T. A. Verhoeven ◽  
B. Beltman ◽  
H. Caluwe
Keyword(s):  
Nutrient Enrichment ◽  
Plant Biomass

scholarly journals Seasonality and Species Specificity of Submerged Macrophyte Biomass in Shallow Lakes Under the Influence of Climate Warming and Eutrophication

2021 ◽  
Vol 12 ◽  
Author(s):  
Haoping Wu ◽  
Beibei Hao ◽  
Hyunbin Jo ◽  
Yanpeng Cai
Keyword(s):  
Climate Warming ◽  
Shallow Lakes ◽  
Nutrient Enrichment ◽  
Plant Biomass ◽  
Submerged Macrophytes ◽  
Anthropogenic Activities ◽  
Species Specificity ◽  
Growth Responses ◽  
Potamogeton Crispus ◽  
Explanatory Factors

Climate warming and eutrophication caused by anthropogenic activities strongly affect aquatic ecosystems. Submerged macrophytes usually play a key role in shallow lakes and can maintain a stable clear state. It is extremely important to study the effects of climate warming and eutrophication on the growth of submerged macrophytes in shallow lakes. However, the responses of submerged macrophytes to climate warming and eutrophication are still controversial. Additionally, the understanding of the main pathways impacting submerged macrophytes remains to be clarified. In addition, the influence of seasonality on the growth responses of submerged macrophytes to climate warming and eutrophication requires further elucidation. In this study, we conducted a series of mesocosm experiments with four replicates across four seasons to study the effects of rising temperature and nutrient enrichment on the biomass of two submerged macrophytes, Potamogeton crispus and Elodea canadensis. Our results demonstrated the seasonality and species specificity of plant biomass under the influence of climate warming and eutrophication, as well as the main explanatory factors in each season. Consistent with the seasonal results, the overall results showed that E. canadensis biomass was directly increased by rising temperature rather than by nutrient enrichment. Conversely, the overall results showed that P. crispus biomass was indirectly reduced by phosphorus enrichment via the strengthening of competition among primary producers. Distinct physiological and morphological traits may induce species-specific responses of submerged macrophytes to climate warming and eutrophication, indicating that further research should take interspecies differences into account.

scholarly journals Nutrient-enhanced decomposition of plant biomass in a freshwater wetland

2015 ◽  
Vol 127 ◽  
pp. 44-52 ◽  
Author(s):  
James E. Bodker ◽  
R. Eugene Turner ◽  
Andrew Tweel ◽  
Christopher Schulz ◽  
Christopher Swarzenski
Keyword(s):  
Plant Biomass ◽  
Freshwater Wetland

Effect of macrophyte community composition and nutrient enrichment on plant biomass and algal blooms

2010 ◽  
Vol 11 (5) ◽  
pp. 432-439 ◽  
Author(s):  
E.S. Bakker ◽  
E. Van Donk ◽  
S.A.J. Declerck ◽  
N.R. Helmsing ◽  
B. Hidding ◽  
...  
Keyword(s):  
Community Composition ◽  
Nutrient Enrichment ◽  
Algal Blooms ◽  
Plant Biomass ◽  
Macrophyte Community

Soil phosphorus enhancement below stormwater outlets in urban bushland: spatial and temporal changes and the relationship with invasive plants

Soil Research ◽  
2004 ◽  
Vol 42 (2) ◽  
pp. 197 ◽  
Author(s):  
Michelle R. Leishman ◽  
Miah T. Hughes ◽  
Damian B. Gore
Keyword(s):  
Nutrient Enrichment ◽  
Plant Cover ◽  
Flow Path ◽  
Significant Decline ◽  
Exotic Plant ◽  
Soil P ◽  
P Concentration ◽  
Urban Catchments ◽  
Total P ◽  
Over Time

Invasion by exotic plant species is a significant problem in urban bushland remnants and is often associated with nutrient enrichment of soils. A major source of nutrient enrichment in urban areas is stormwater runoff, which is transferred from impervious surfaces in urban catchments and discharged at outlets on the residential/bushland interface. We measured the spatial extent of soil total phosphorus (P) enhancement below stormwater outlets on Hawkesbury Sandstone-derived soils in northern Sydney and examined whether total P concentration has increased with time since urban development and extended laterally beyond the stormwater flow path. The average area of soil P enhancement below outlets was 0.24 ± 0.05 ha and was widest 30–50 m downslope from the outlet, where it extended an average 40 m across slope. Catchment area was not significantly related to average soil total P concentration. There was a significant decline in total P across slope from the centre of the flow path and a significant positive relationship between soil total P and proportion of exotic plant cover, with soil P accounting for 77.5% of variation. We found evidence for a build-up in soil total P concentration over time within the run-on zone below outlets, with the rate of enhancement being ~68 mg/kg per decade over a 40-year period. Evidence for lateral transfer of soil P out of the run-on area was more equivocal. There was a significant decline in soil total P across slope from the boundary of the run-on zone, with higher concentrations at distances 0.5 m and 1 m from the boundary compared with >1.5 m. However, this could be due to error in locating the boundary between run-on and non run-on areas. There was no significant relationship between soil P in the non run-on zone and age of development, which would be expected if P was being transferred by biological activity beyond the run-on zone over time. It is clear that the primary areas of concern for management must be the run-on areas below outlets.

ESTIMATION OF ABOVE GROUND BIOMASS OF THE THREE SITES (GRAZED SITE, PROTECTED SITE AND SEED SOWN SITE) FOR COMPARING THEIR PRODUCTIVITY IN KASHMIR VALLEY

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
AFSHAN ANJUM BABA ◽  
SYED NASEEM UL-ZAFAR GEELANI ◽  
ISHRAT SALEEM ◽  
MOHIT HUSAIN ◽  
PERVEZ AHMAD KHAN ◽  
...  
Keyword(s):  
Protected Areas ◽  
Aboveground Biomass ◽  
Plant Biomass ◽  
Summer Season ◽  
Above Ground Biomass ◽  
Spring Season ◽  
Kashmir Valley ◽  
Ground Biomass ◽  
Maximum Value ◽  
Protected Site

The plant biomass for protected areas was maximum in summer (1221.56 g/m2) and minimum in winter (290.62 g/m2) as against grazed areas having maximum value 590.81 g/m2 in autumn and minimum 183.75 g/m2 in winter. Study revealed that at Protected site (Kanidajan) the above ground biomass ranged was from a minimum (1.11 t ha-1) in the spring season to a maximum (4.58 t ha-1) in the summer season while at Grazed site (Yousmarag), the aboveground biomass varied from a minimum (0.54 t ha-1) in the spring season to a maximum of 1.48 t ha-1 in summer seasonandat Seed sown site (Badipora), the lowest value of aboveground biomass obtained was 4.46 t ha-1 in spring while as the highest (7.98 t ha-1) was obtained in summer.

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