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Toward an ecologically meaningful view of resource stoichiometry in DOM-dominated aquatic systems

Berggren, Martin LU ; Sponseller, Ryan A.; Soares, Ana LU and Bergström, Ann-Kristin (2015) In Journal of Plankton Research 37(3). p.489-499
Abstract
Research on nutrient controls of planktonic productivity tends to focus on a few standard fractions of inorganic or total nitrogen (N) and phosphorus (P). However, there is a wide range in the degree to which land-derived dissolved organic nutrients can be assimilated by biota. Thus, in systems where such fractions form a majority of the macronutrient resource pool, including many boreal inland waters and estuaries, our understanding of bacterio- and phytoplankton production dynamics remains limited. To adequately predict aquatic productivity in a changing environment, improved standard methods are needed for determining the sizes of active (bioavailable) pools of N, P and organic carbon (C). A synthesis of current knowledge suggests that... (More)
Research on nutrient controls of planktonic productivity tends to focus on a few standard fractions of inorganic or total nitrogen (N) and phosphorus (P). However, there is a wide range in the degree to which land-derived dissolved organic nutrients can be assimilated by biota. Thus, in systems where such fractions form a majority of the macronutrient resource pool, including many boreal inland waters and estuaries, our understanding of bacterio- and phytoplankton production dynamics remains limited. To adequately predict aquatic productivity in a changing environment, improved standard methods are needed for determining the sizes of active (bioavailable) pools of N, P and organic carbon (C). A synthesis of current knowledge suggests that variation in the C:N:P stoichiometry of bioavailable resources is associated with diverse processes that differentially influence the individual elements across space and time. Due to a generally increasing organic nutrient bioavailability from C to N to P, we hypothesize that the C:N and N:P of bulk resources often vastly overestimates the corresponding ratios of bioavailable resources. It is further proposed that basal planktonic production is regulated by variation in the source, magnitude and timing of terrestrial runoff, through processes that have so far been poorly described. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
nutrient limitation, dissolved organic matter, bioavailability, bacterioplankton production, phytoplankton primary production, basal resource stoichiometry
in
Journal of Plankton Research
volume
37
issue
3
pages
489 - 499
publisher
Oxford University Press
external identifiers
  • wos:000356039200001
  • pmid:26251558
  • scopus:84939631926
ISSN
0142-7873
DOI
10.1093/plankt/fbv018
language
English
LU publication?
yes
id
d5553f8c-9c88-4f48-8ce1-d055220efbf2 (old id 5434892)
date added to LUP
2015-07-22 08:57:58
date last changed
2017-04-09 04:05:10
@article{d5553f8c-9c88-4f48-8ce1-d055220efbf2,
  abstract     = {Research on nutrient controls of planktonic productivity tends to focus on a few standard fractions of inorganic or total nitrogen (N) and phosphorus (P). However, there is a wide range in the degree to which land-derived dissolved organic nutrients can be assimilated by biota. Thus, in systems where such fractions form a majority of the macronutrient resource pool, including many boreal inland waters and estuaries, our understanding of bacterio- and phytoplankton production dynamics remains limited. To adequately predict aquatic productivity in a changing environment, improved standard methods are needed for determining the sizes of active (bioavailable) pools of N, P and organic carbon (C). A synthesis of current knowledge suggests that variation in the C:N:P stoichiometry of bioavailable resources is associated with diverse processes that differentially influence the individual elements across space and time. Due to a generally increasing organic nutrient bioavailability from C to N to P, we hypothesize that the C:N and N:P of bulk resources often vastly overestimates the corresponding ratios of bioavailable resources. It is further proposed that basal planktonic production is regulated by variation in the source, magnitude and timing of terrestrial runoff, through processes that have so far been poorly described.},
  author       = {Berggren, Martin and Sponseller, Ryan A. and Soares, Ana and Bergström, Ann-Kristin},
  issn         = {0142-7873},
  keyword      = {nutrient limitation,dissolved organic matter,bioavailability,bacterioplankton production,phytoplankton primary production,basal resource stoichiometry},
  language     = {eng},
  number       = {3},
  pages        = {489--499},
  publisher    = {Oxford University Press},
  series       = {Journal of Plankton Research},
  title        = {Toward an ecologically meaningful view of resource stoichiometry in DOM-dominated aquatic systems},
  url          = {http://dx.doi.org/10.1093/plankt/fbv018},
  volume       = {37},
  year         = {2015},
}