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 A Meta-Analytical Approach on Arbuscular Mycorrhizal Fungi Inoculation Efficiency on Plant Growth and Nutrient Uptake

Agriculture ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 370
Author(s):  
Murugesan Chandrasekaran
Keyword(s):  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Nutrient Uptake ◽  
Mycorrhizal Fungi ◽  
Host Plants ◽  
Plant Biomass ◽  
Meta Analysis ◽  
Arbuscular Mycorrhizal ◽  
Growth Responses ◽  
Mycorrhizal Plants

Arbuscular mycorrhizal fungi (AMF) are obligate symbionts of higher plants which increase the growth and nutrient uptake of host plants. The primary objective was initiated based on analyzing the enormity of optimal effects upon AMF inoculation in a comparative bias between mycorrhizal and non-mycorrhizal plants stipulated on plant biomass and nutrient uptake. Consequently, in accomplishing the above-mentioned objective a vast literature was collected, analyzed, and evaluated to establish a weighted meta-analysis irrespective of AMF species, plant species, family and functional group, and experimental conditions in the context of beneficial effects of AMF. I found a significant increase in the shoot, root, and total biomass by 36.3%, 28.5%, and, 29.7%, respectively. Moreover, mycorrhizal plants significantly increased phosphorus, nitrogen, and potassium uptake by 36.3%, 22.1%, and 18.5%, respectively. Affirmatively upon cross-verification studies, plant growth parameters intensification was accredited to AMF (Rhizophagus fasciculatus followed by Funniliforme mosseae), plants (Triticum aestivum followed by Solanum lycopersicum), and plant functional groups (dicot, herbs, and perennial) were the additional vital important significant predictor variables of plant growth responses. Therefore, the meta-analysis concluded that the emancipated prominent root characteristics, increased morphological traits that eventually help the host plants for efficient phosphorus uptake, thereby enhancing plant biomass. The present analysis can be rationalized for any plant stress and assessment of any microbial agent that contributes to plant growth promotion.

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 Nutrient enrichment homogenizes taxonomic and functional diversity of benthic macroinvertebrate assemblages in shallow lakes

2018 ◽  
Vol 64 (3) ◽  
pp. 1047-1058 ◽  
Author(s):  
You Zhang ◽  
Long Cheng ◽  
Kuanyi Li ◽  
Lu Zhang ◽  
Yongjiu Cai ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Shallow Lakes ◽  
Nutrient Enrichment ◽  
Benthic Macroinvertebrate ◽  
Macroinvertebrate Assemblages

scholarly journals Quantitative Assessment of Ammonia-Oxidizing Bacterial Communities in the Epiphyton of Submerged Macrophytes in Shallow Lakes

2010 ◽  
Vol 76 (6) ◽  
pp. 1813-1821 ◽  
Author(s):  
M. Coci ◽  
G. W. Nicol ◽  
G. N. Pilloni ◽  
M. Schmid ◽  
M. P. Kamst-van Agterveld ◽  
...  
Keyword(s):  
16S Rrna ◽  
Shallow Lakes ◽  
Submerged Macrophytes ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Gene Copy ◽  
Potamogeton Pectinatus ◽  
Rrna Gene ◽  
Ammonia Oxidizing Bacteria ◽  
Potential Nitrification

ABSTRACT In addition to the benthic and pelagic habitats, the epiphytic compartment of submerged macrophytes in shallow freshwater lakes offers a niche to bacterial ammonia-oxidizing communities. However, the diversity, numbers, and activity of epiphytic ammonia-oxidizing bacteria have long been overlooked. In the present study, we analyzed quantitatively the epiphytic communities of three shallow lakes by a potential nitrification assay and by quantitative PCR of 16S rRNA genes. On the basis of the m2 of the lake surface, the gene copy numbers of epiphytic ammonia oxidizers were not significantly different from those in the benthic and pelagic compartments. The potential ammonia-oxidizing activities measured in the epiphytic compartment were also not significantly different from the activities determined in the benthic compartment. No potential ammonia-oxidizing activities were observed in the pelagic compartment. No activity was detected in the epiphyton of Chara aspera, the dominant submerged macrophyte in Lake Nuldernauw in The Netherlands. The presence of ammonia-oxidizing bacterial cells in the epiphyton of Potamogeton pectinatus was also demonstrated by fluorescent in situ hybridization microscopy images. By comparing the community composition as assessed by the 16S rRNA gene PCR-denaturing gradient gel electrophoresis approach, it was concluded that the epiphytic ammonia-oxidizing communities consisted of cells that were also present in the benthic and pelagic compartments. Of the environmental parameters examined, only the water retention time, the Kjeldahl nitrogen content, and the total phosphorus content correlated with potential ammonia-oxidizing activities. None of these parameters correlated with the numbers of gene copies related to ammonia-oxidizing betaproteobacteria.

scholarly journals Response of zooplankton to nutrient enrichment and fish in shallow lakes: a pan-European mesocosm experiment

2004 ◽  
Vol 49 (12) ◽  
pp. 1619-1632 ◽  
Author(s):  
Kirsi Vakkilainen ◽  
Timo Kairesalo ◽  
Jaana Hietala ◽  
David M. Balayla ◽  
Eloy Becares ◽  
...  
Keyword(s):  
Shallow Lakes ◽  
Nutrient Enrichment ◽  
Mesocosm Experiment

Effects of increased temperature and nutrient enrichment on the stoichiometry of primary producers and consumers in temperate shallow lakes

2008 ◽  
Vol 53 (7) ◽  
pp. 1434-1452 ◽  
Author(s):  
M. VENTURA ◽  
L. LIBORIUSSEN ◽  
T. LAURIDSEN ◽  
M. SØNDERGAARD ◽  
M. SØNDERGAARD ◽  
...  
Keyword(s):  
Shallow Lakes ◽  
Nutrient Enrichment ◽  
Primary Producers ◽  
Increased Temperature
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