Abstract
In planktonic ecosystems, algae and bacteria exhibit complex interrelationships, as algae provide an important organic matter source for microbial growth while microbial metabolism recycles limiting nutrients for algae in a loose commensalism. However, algae and bacteria can also compete for available nutrients if supplies of organic matter are sufficient to satisfy bacterial demand. We developed a stoichiometrically explicit model of bacteria-algae interactions that incorporated realistic assumptions about algal light and nutrient utilization, algal exudation of organic matter, and bacterial processing of organic matter and nutrients. The model makes specific predictions about how the relative balance of algae and bacteria should change in response to varied nutrient and light availability seen in lakes and oceans. The model successfully reproduces published empirical data and indicates that, under moderate nutrient supply, the bacterial percentage of total respiration should be maximal at intermediate light intensity.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 25-33 |
| Number of pages | 9 |
| Journal | Ecological Complexity |
| Volume | 23 |
| DOIs | |
| State | Published - Jan 1 2015 |
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Keywords
- Algae
- Bacteria
- Carbon
- Light
- Phosphorus
- Respiration
- Stoichiometry
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Ecological Modeling
Cite this
Modeling the bacterial contribution to planktonic community respiration in the regulation of solar energy and nutrient availability. / Alijani, Maryam Khajeh; Wang, Hao; Elser, James.
In: Ecological Complexity, Vol. 23, 01.01.2015, p. 25-33.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Modeling the bacterial contribution to planktonic community respiration in the regulation of solar energy and nutrient availability
AU - Alijani, Maryam Khajeh
AU - Wang, Hao
AU - Elser, James
PY - 2015/1/1
Y1 - 2015/1/1
N2 - In planktonic ecosystems, algae and bacteria exhibit complex interrelationships, as algae provide an important organic matter source for microbial growth while microbial metabolism recycles limiting nutrients for algae in a loose commensalism. However, algae and bacteria can also compete for available nutrients if supplies of organic matter are sufficient to satisfy bacterial demand. We developed a stoichiometrically explicit model of bacteria-algae interactions that incorporated realistic assumptions about algal light and nutrient utilization, algal exudation of organic matter, and bacterial processing of organic matter and nutrients. The model makes specific predictions about how the relative balance of algae and bacteria should change in response to varied nutrient and light availability seen in lakes and oceans. The model successfully reproduces published empirical data and indicates that, under moderate nutrient supply, the bacterial percentage of total respiration should be maximal at intermediate light intensity.
AB - In planktonic ecosystems, algae and bacteria exhibit complex interrelationships, as algae provide an important organic matter source for microbial growth while microbial metabolism recycles limiting nutrients for algae in a loose commensalism. However, algae and bacteria can also compete for available nutrients if supplies of organic matter are sufficient to satisfy bacterial demand. We developed a stoichiometrically explicit model of bacteria-algae interactions that incorporated realistic assumptions about algal light and nutrient utilization, algal exudation of organic matter, and bacterial processing of organic matter and nutrients. The model makes specific predictions about how the relative balance of algae and bacteria should change in response to varied nutrient and light availability seen in lakes and oceans. The model successfully reproduces published empirical data and indicates that, under moderate nutrient supply, the bacterial percentage of total respiration should be maximal at intermediate light intensity.
KW - Algae
KW - Bacteria
KW - Carbon
KW - Light
KW - Phosphorus
KW - Respiration
KW - Stoichiometry
UR - http://www.scopus.com/inward/record.url?scp=84930623646&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84930623646&partnerID=8YFLogxK
U2 - 10.1016/j.ecocom.2015.05.002
DO - 10.1016/j.ecocom.2015.05.002
M3 - Article
VL - 23
SP - 25
EP - 33
JO - Ecological Complexity
JF - Ecological Complexity
SN - 1476-945X
ER -