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Response of the photosynthetic activity and biomass of the phytoplankton community to increasing nutrients during cyanobacterial blooms in Meiliang Bay, Lake Taihu.
Water Environ Res. 2020 Jan; 92(1):138-148.WE

Abstract

Nutrient enrichment facilitates algal outbreaks in eutrophic shallow lakes. To further understand the influence of various inorganic nutrient forms on cyanobacterial blooms, a nitrate (NO3), ammonium (NH4), and orthophosphate (PO4) amendment experiment was conducted in a large shallow lake of China (Lake Taihu) during summer. The results showed that the photosynthetic performance of phytoplankton responded more positively to phosphorus (P) than nitrogen (N), and NH4 addition stimulated higher algal photosynthetic activities in P-enriched waters. Individual inorganic N or PO4 addition significantly activated cyanobacteria and green algae. Meanwhile, the N plus P amendment promoted higher biomass of the planktonic microbial community, and the dual addition of NH4 + PO4 yielded the highest chlorophyll a concentration. NH4 additions provisionally promoted higher green algae than cyanobacteria biomass in the beginning, while cyanobacteria dominated again with increasing NH4 :PO4 ratios. These results revealed that increasing ammonium would enhance the increase in phytoplankton biomass in advance and prolong the duration of algal blooms. Hence, based on the control of P loading, the reduction in external inorganic N focusing on ammonium sources (such as ammonia N fertilizer) at the watershed scale would help to alleviate eutrophication and cyanobacterial blooms over the long term in Lake Taihu. PRACTITIONER POINTS: Ammonium addition stimulated higher algal photosynthetic activities in P-enriched waters. Individual inorganic N or PO4 addition significantly activated cyanobacteria and green algae. The dual addition of NH4 + PO4 yielded the highest chlorophyll a concentration. Increasing NH4 would enhance the increase in phytoplankton biomass in advance and prolong the duration of cyanobacterial blooms.

Authors+Show Affiliations

State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, China.State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, China.State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, China.State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, China.State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31486194

Citation

Wu, Pan, et al. "Response of the Photosynthetic Activity and Biomass of the Phytoplankton Community to Increasing Nutrients During Cyanobacterial Blooms in Meiliang Bay, Lake Taihu." Water Environment Research : a Research Publication of the Water Environment Federation, vol. 92, no. 1, 2020, pp. 138-148.
Wu P, Lu Y, Lu Y, et al. Response of the photosynthetic activity and biomass of the phytoplankton community to increasing nutrients during cyanobacterial blooms in Meiliang Bay, Lake Taihu. Water Environ Res. 2020;92(1):138-148.
Wu, P., Lu, Y., Lu, Y., Dai, J., & Huang, T. (2020). Response of the photosynthetic activity and biomass of the phytoplankton community to increasing nutrients during cyanobacterial blooms in Meiliang Bay, Lake Taihu. Water Environment Research : a Research Publication of the Water Environment Federation, 92(1), 138-148. https://doi.org/10.1002/wer.1220
Wu P, et al. Response of the Photosynthetic Activity and Biomass of the Phytoplankton Community to Increasing Nutrients During Cyanobacterial Blooms in Meiliang Bay, Lake Taihu. Water Environ Res. 2020;92(1):138-148. PubMed PMID: 31486194.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Response of the photosynthetic activity and biomass of the phytoplankton community to increasing nutrients during cyanobacterial blooms in Meiliang Bay, Lake Taihu. AU - Wu,Pan, AU - Lu,Yongjun, AU - Lu,Yan, AU - Dai,Jiangyu, AU - Huang,Tingjie, Y1 - 2019/09/04/ PY - 2019/03/22/received PY - 2019/06/06/revised PY - 2019/08/16/accepted PY - 2019/9/6/pubmed PY - 2019/12/20/medline PY - 2019/9/6/entrez KW - chlorophyll fluorescence KW - cyanobacterial bloom KW - eutrophication KW - inorganic nitrogen KW - shallow lakes SP - 138 EP - 148 JF - Water environment research : a research publication of the Water Environment Federation JO - Water Environ Res VL - 92 IS - 1 N2 - Nutrient enrichment facilitates algal outbreaks in eutrophic shallow lakes. To further understand the influence of various inorganic nutrient forms on cyanobacterial blooms, a nitrate (NO3), ammonium (NH4), and orthophosphate (PO4) amendment experiment was conducted in a large shallow lake of China (Lake Taihu) during summer. The results showed that the photosynthetic performance of phytoplankton responded more positively to phosphorus (P) than nitrogen (N), and NH4 addition stimulated higher algal photosynthetic activities in P-enriched waters. Individual inorganic N or PO4 addition significantly activated cyanobacteria and green algae. Meanwhile, the N plus P amendment promoted higher biomass of the planktonic microbial community, and the dual addition of NH4 + PO4 yielded the highest chlorophyll a concentration. NH4 additions provisionally promoted higher green algae than cyanobacteria biomass in the beginning, while cyanobacteria dominated again with increasing NH4 :PO4 ratios. These results revealed that increasing ammonium would enhance the increase in phytoplankton biomass in advance and prolong the duration of algal blooms. Hence, based on the control of P loading, the reduction in external inorganic N focusing on ammonium sources (such as ammonia N fertilizer) at the watershed scale would help to alleviate eutrophication and cyanobacterial blooms over the long term in Lake Taihu. PRACTITIONER POINTS: Ammonium addition stimulated higher algal photosynthetic activities in P-enriched waters. Individual inorganic N or PO4 addition significantly activated cyanobacteria and green algae. The dual addition of NH4 + PO4 yielded the highest chlorophyll a concentration. Increasing NH4 would enhance the increase in phytoplankton biomass in advance and prolong the duration of cyanobacterial blooms. SN - 1554-7531 UR - https://www.unboundmedicine.com/medline/citation/31486194/Response_of_the_photosynthetic_activity_and_biomass_of_the_phytoplankton_community_to_increasing_nutrients_during_cyanobacterial_blooms_in_Meiliang_Bay_Lake_Taihu_ L2 - https://doi.org/10.1002/wer.1220 DB - PRIME DP - Unbound Medicine ER -