Modelling the clonal growth of the rhizomatous macrophyte Potamogeton perfoliatus

S.R. Wolfer, E.H. van Nes, D. Straile

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

Abstract

Macrophytes play a crucial role in the functioning of lake ecosystems. Until now most macrophyte models neglected the fact that the majority of macrophyte species expand clonally during the growing season. Inclusion of a detailed description of clonal growth in models can facilitate our understanding of space occupation and patch expansion and predict future macrophyte development. ¿CLOMO¿ is an individual-based model which includes a detailed, spatially explicit description of rhizome formation and clone expansion as well as a realistic description of photosynthesis including light limitation and temperature. The model also accounts for transfers of energy or resources between different parts of the clone (¿clonal integration¿). Although the clonal growth of macrophytes is complex and poorly known, the first model results for the macrophyte species Potamogeton perfoliatus were promising and compared well with the field data. The model can produce growth networks very similar to those found in the field. A Monte Carlo sensitivity analysis showed systematically which parameters have the largest effect on the architecture and expansion of the clones. The application of the model provided new insights into growth dynamics and patch development: (1) the model showed that a lack of branching will lead to the extinction of the clone after a certain number of years. This is due to the fact that the reproductive organs (turions) are formed at the end of a branch and even a small turion mortality will cause a reduction in surviving plant numbers; (2) the growth of rhizome axes relative to those in the previous year determines the patch density and patch expansion rate. Reversing rhizomes lead to compact patch growth whereas continuing rhizomes lead to loose aggregates.
LanguageEnglish
Pages67-82
JournalEcological Modelling
Volume192
Issue number1-2
DOIs
Publication statusPublished - 2006

Fingerprint

clonal growth
macrophyte
rhizome
modeling
individual-based model
lake ecosystem
occupation
sensitivity analysis
clone
photosynthesis
growing season
extinction
mortality
resource

Keywords

  • division-of-labor
  • pectinatus l
  • simulation-model
  • aquatic plant
  • physiological integration
  • phragmites-australis
  • population-dynamics
  • posidonia-oceanica
  • cellular-automata
  • shallow lakes

Cite this

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title = "Modelling the clonal growth of the rhizomatous macrophyte Potamogeton perfoliatus",
abstract = "Macrophytes play a crucial role in the functioning of lake ecosystems. Until now most macrophyte models neglected the fact that the majority of macrophyte species expand clonally during the growing season. Inclusion of a detailed description of clonal growth in models can facilitate our understanding of space occupation and patch expansion and predict future macrophyte development. ¿CLOMO¿ is an individual-based model which includes a detailed, spatially explicit description of rhizome formation and clone expansion as well as a realistic description of photosynthesis including light limitation and temperature. The model also accounts for transfers of energy or resources between different parts of the clone (¿clonal integration¿). Although the clonal growth of macrophytes is complex and poorly known, the first model results for the macrophyte species Potamogeton perfoliatus were promising and compared well with the field data. The model can produce growth networks very similar to those found in the field. A Monte Carlo sensitivity analysis showed systematically which parameters have the largest effect on the architecture and expansion of the clones. The application of the model provided new insights into growth dynamics and patch development: (1) the model showed that a lack of branching will lead to the extinction of the clone after a certain number of years. This is due to the fact that the reproductive organs (turions) are formed at the end of a branch and even a small turion mortality will cause a reduction in surviving plant numbers; (2) the growth of rhizome axes relative to those in the previous year determines the patch density and patch expansion rate. Reversing rhizomes lead to compact patch growth whereas continuing rhizomes lead to loose aggregates.",
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author = "S.R. Wolfer and {van Nes}, E.H. and D. Straile",
year = "2006",
doi = "10.1016/j.ecolmodel.2005.06.009",
language = "English",
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pages = "67--82",
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Modelling the clonal growth of the rhizomatous macrophyte Potamogeton perfoliatus. / Wolfer, S.R.; van Nes, E.H.; Straile, D.

In: Ecological Modelling, Vol. 192, No. 1-2, 2006, p. 67-82.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Modelling the clonal growth of the rhizomatous macrophyte Potamogeton perfoliatus

AU - Wolfer, S.R.

AU - van Nes, E.H.

AU - Straile, D.

PY - 2006

Y1 - 2006

N2 - Macrophytes play a crucial role in the functioning of lake ecosystems. Until now most macrophyte models neglected the fact that the majority of macrophyte species expand clonally during the growing season. Inclusion of a detailed description of clonal growth in models can facilitate our understanding of space occupation and patch expansion and predict future macrophyte development. ¿CLOMO¿ is an individual-based model which includes a detailed, spatially explicit description of rhizome formation and clone expansion as well as a realistic description of photosynthesis including light limitation and temperature. The model also accounts for transfers of energy or resources between different parts of the clone (¿clonal integration¿). Although the clonal growth of macrophytes is complex and poorly known, the first model results for the macrophyte species Potamogeton perfoliatus were promising and compared well with the field data. The model can produce growth networks very similar to those found in the field. A Monte Carlo sensitivity analysis showed systematically which parameters have the largest effect on the architecture and expansion of the clones. The application of the model provided new insights into growth dynamics and patch development: (1) the model showed that a lack of branching will lead to the extinction of the clone after a certain number of years. This is due to the fact that the reproductive organs (turions) are formed at the end of a branch and even a small turion mortality will cause a reduction in surviving plant numbers; (2) the growth of rhizome axes relative to those in the previous year determines the patch density and patch expansion rate. Reversing rhizomes lead to compact patch growth whereas continuing rhizomes lead to loose aggregates.

AB - Macrophytes play a crucial role in the functioning of lake ecosystems. Until now most macrophyte models neglected the fact that the majority of macrophyte species expand clonally during the growing season. Inclusion of a detailed description of clonal growth in models can facilitate our understanding of space occupation and patch expansion and predict future macrophyte development. ¿CLOMO¿ is an individual-based model which includes a detailed, spatially explicit description of rhizome formation and clone expansion as well as a realistic description of photosynthesis including light limitation and temperature. The model also accounts for transfers of energy or resources between different parts of the clone (¿clonal integration¿). Although the clonal growth of macrophytes is complex and poorly known, the first model results for the macrophyte species Potamogeton perfoliatus were promising and compared well with the field data. The model can produce growth networks very similar to those found in the field. A Monte Carlo sensitivity analysis showed systematically which parameters have the largest effect on the architecture and expansion of the clones. The application of the model provided new insights into growth dynamics and patch development: (1) the model showed that a lack of branching will lead to the extinction of the clone after a certain number of years. This is due to the fact that the reproductive organs (turions) are formed at the end of a branch and even a small turion mortality will cause a reduction in surviving plant numbers; (2) the growth of rhizome axes relative to those in the previous year determines the patch density and patch expansion rate. Reversing rhizomes lead to compact patch growth whereas continuing rhizomes lead to loose aggregates.

KW - division-of-labor

KW - pectinatus l

KW - simulation-model

KW - aquatic plant

KW - physiological integration

KW - phragmites-australis

KW - population-dynamics

KW - posidonia-oceanica

KW - cellular-automata

KW - shallow lakes

U2 - 10.1016/j.ecolmodel.2005.06.009

DO - 10.1016/j.ecolmodel.2005.06.009

M3 - Article

VL - 192

SP - 67

EP - 82

JO - Ecological Modelling

T2 - Ecological Modelling

JF - Ecological Modelling

SN - 0304-3800

IS - 1-2

ER -