Contrasting stoichiometric dynamics in terrestrial and aquatic grazer–producer systems
The turnover rate of producer biomass in aquatic ecosystems is generally faster than in terrestrial. That is, aquatic producer biomass grows, is consumed, and is replaced considerably faster than terrestrial. The WKL model describes the flow of phosphorus and carbon through a grazer–producer system,...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-05-01
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| Series: | Journal of Biological Dynamics |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17513758.2020.1771442 |
| _version_ | 1819100620950339584 |
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| author | Colleen M. Davies Hao Wang |
| author_facet | Colleen M. Davies Hao Wang |
| author_sort | Colleen M. Davies |
| collection | DOAJ |
| description | The turnover rate of producer biomass in aquatic ecosystems is generally faster than in terrestrial. That is, aquatic producer biomass grows, is consumed, and is replaced considerably faster than terrestrial. The WKL model describes the flow of phosphorus and carbon through a grazer–producer system, hence varying the model parameters allows for analysis of different ecosystems of this type. Here we explore the impacts of the intrinsic growth rate of the producer and the maximal ingestion rate of the grazer on these dynamics because these parameters determine turnover rate. Simulations show that for low intrinsic growth rate and maximal ingestion rate, the grazer goes extinct; for higher values of these parameters, coexistence occurs in oscillations. Sensitivity analysis reveals the relative importance of all parameters on asymptotic dynamics. Lastly, the impacts of changing these two parameters in the LKE model appears to be quantitatively similar to the impacts in the WKL model. |
| first_indexed | 2024-12-22T01:05:41Z |
| format | Article |
| id | doaj.art-b9b5a54f019d4bf99e9e1d010a9674a2 |
| institution | Directory Open Access Journal |
| issn | 1751-3758 1751-3766 |
| language | English |
| last_indexed | 2024-12-22T01:05:41Z |
| publishDate | 2021-05-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Biological Dynamics |
| spelling | doaj.art-b9b5a54f019d4bf99e9e1d010a9674a22022-12-21T18:44:06ZengTaylor & Francis GroupJournal of Biological Dynamics1751-37581751-37662021-05-0115S1S3S3410.1080/17513758.2020.17714421771442Contrasting stoichiometric dynamics in terrestrial and aquatic grazer–producer systemsColleen M. Davies0Hao Wang1Department of Mathematical and Statistical Sciences, University of AlbertaDepartment of Mathematical and Statistical Sciences, University of AlbertaThe turnover rate of producer biomass in aquatic ecosystems is generally faster than in terrestrial. That is, aquatic producer biomass grows, is consumed, and is replaced considerably faster than terrestrial. The WKL model describes the flow of phosphorus and carbon through a grazer–producer system, hence varying the model parameters allows for analysis of different ecosystems of this type. Here we explore the impacts of the intrinsic growth rate of the producer and the maximal ingestion rate of the grazer on these dynamics because these parameters determine turnover rate. Simulations show that for low intrinsic growth rate and maximal ingestion rate, the grazer goes extinct; for higher values of these parameters, coexistence occurs in oscillations. Sensitivity analysis reveals the relative importance of all parameters on asymptotic dynamics. Lastly, the impacts of changing these two parameters in the LKE model appears to be quantitatively similar to the impacts in the WKL model.http://dx.doi.org/10.1080/17513758.2020.1771442ecological stoichiometryp:c ratioterrestrialaquaticgrazerproducerbifurcation analysissensitivity analysis |
| spellingShingle | Colleen M. Davies Hao Wang Contrasting stoichiometric dynamics in terrestrial and aquatic grazer–producer systems Journal of Biological Dynamics ecological stoichiometry p:c ratio terrestrial aquatic grazer producer bifurcation analysis sensitivity analysis |
| title | Contrasting stoichiometric dynamics in terrestrial and aquatic grazer–producer systems |
| title_full | Contrasting stoichiometric dynamics in terrestrial and aquatic grazer–producer systems |
| title_fullStr | Contrasting stoichiometric dynamics in terrestrial and aquatic grazer–producer systems |
| title_full_unstemmed | Contrasting stoichiometric dynamics in terrestrial and aquatic grazer–producer systems |
| title_short | Contrasting stoichiometric dynamics in terrestrial and aquatic grazer–producer systems |
| title_sort | contrasting stoichiometric dynamics in terrestrial and aquatic grazer producer systems |
| topic | ecological stoichiometry p:c ratio terrestrial aquatic grazer producer bifurcation analysis sensitivity analysis |
| url | http://dx.doi.org/10.1080/17513758.2020.1771442 |
| work_keys_str_mv | AT colleenmdavies contrastingstoichiometricdynamicsinterrestrialandaquaticgrazerproducersystems AT haowang contrastingstoichiometricdynamicsinterrestrialandaquaticgrazerproducersystems |