PMID- 29289776
OWN - NLM
STAT- MEDLINE
DCOM- 20181011
LR  - 20181011
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 625
DP  - 2018 Jun 1
TI  - Dynamics and drivers of phytoplankton richness and composition along productivity 
      gradient.
PG  - 275-284
LID - S0048-9697(17)33721-X [pii]
LID - 10.1016/j.scitotenv.2017.12.288 [doi]
AB  - The shape of the productivity-richness relationship (PRR) for phytoplankton has 
      been suggested to be unimodal, that is, the richness peaks at intermediate 
      productivity levels. However, the mechanistic understanding for this pattern is 
      still widely debated. In this study, we observed a unimodal PRR within 71 lakes 
      along the Yangtze River encompassing an altitude range of 0-2700m, and an over 
      2200km distance from the upper reaches to the lower reaches. At low productivity, 
      the competition for resources and regulatory processes jointly affected 
      phytoplankton richness and composition, and their explanatory power depend on the 
      gradient scale of driving factors. The variation of temperature attributing to 
      altitudinal difference explained the majority of the variations of phytoplankton. 
      If the altitude variation in temperature was eliminated, the explanatory power of 
      temperature decreased from 31.7 to 7.6, and the independent effect of each 
      resource and regulatory variable were limited and not decisive. At high 
      productivity, the negative feedback of increased productivity (light limitation) 
      affected the phytoplankton species richness and composition. The light-sensitive 
      species disappeared, low-light-adapted species was retained and the phytoplankton 
      composition gradually became similar with an increase in productivity. The 
      findings contribute to an increased understanding of the mechanisms resulting in 
      a hump-shaped PRR for phytoplankton.
CI  - Copyright (c) 2017 Elsevier B.V. All rights reserved.
FAU - Zhang, Min
AU  - Zhang M
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, CAS, Nanjing 210008, China. Electronic address: 
      mzhang@niglas.ac.cn.
FAU - Straile, Dietmar
AU  - Straile D
AD  - Limnological Institute, Department of Biology, University of Konstanz, 78464 
      Konstanz, Germany.
FAU - Chen, Feizhou
AU  - Chen F
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, CAS, Nanjing 210008, China.
FAU - Shi, Xiaoli
AU  - Shi X
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, CAS, Nanjing 210008, China.
FAU - Yang, Zhen
AU  - Yang Z
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, CAS, Nanjing 210008, China.
FAU - Cai, Yongjiu
AU  - Cai Y
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, CAS, Nanjing 210008, China.
FAU - Yu, Jinlei
AU  - Yu J
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, CAS, Nanjing 210008, China.
FAU - Kong, Fanxiang
AU  - Kong F
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, CAS, Nanjing 210008, China.
LA  - eng
PT  - Journal Article
DEP - 20171228
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
SB  - IM
MH  - *Altitude
MH  - *Biodiversity
MH  - China
MH  - Environmental Monitoring
MH  - *Lakes
MH  - Phytoplankton/*classification
MH  - *Temperature
OTO - NOTNLM
OT  - Phytoplankton
OT  - Primary productivity
OT  - Productivity-richness relationships
OT  - Species richness
EDAT- 2018/01/01 06:00
MHDA- 2018/10/12 06:00
CRDT- 2018/01/01 06:00
PHST- 2017/11/20 00:00 [received]
PHST- 2017/12/21 00:00 [revised]
PHST- 2017/12/23 00:00 [accepted]
PHST- 2018/01/01 06:00 [pubmed]
PHST- 2018/10/12 06:00 [medline]
PHST- 2018/01/01 06:00 [entrez]
AID - S0048-9697(17)33721-X [pii]
AID - 10.1016/j.scitotenv.2017.12.288 [doi]
PST - ppublish
SO  - Sci Total Environ. 2018 Jun 1;625:275-284. doi: 10.1016/j.scitotenv.2017.12.288. 
      Epub 2017 Dec 28.