Inherent and apparent traits in microbial nutrient uptake

Nearly 50 yr ago, the Michaelis-Menten (MM) model, originally derived for enzyme kinetics, was adapted to characterize microbial nutrient uptake and has become a framework for defining microbial traits in competition theory, evolutionary dynamics, and ocean ecosystem models. We provide theoretical e...

Full description

Saved in:
Bibliographic Details
Published in:Marine ecology. Progress series (Halstenbek) 2011-10, Vol.440, p.41-51
Main Authors: Aksnes, Dag L., Cao, Francisco J.
Format: Article
Language:English
Subjects:
Approximation
Ecological modeling
Ecosystem models
Marine
Molecular diffusion
Molecules
Nutrient absorption
Nutrient uptake
Oceans
Phytoplankton
Vibrio
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by cdi_FETCH-LOGICAL-c319t-f1b67d3f89414b15a5809e325db268b5efcb24df7dc1cd7b1102f6a287ea117d3
cites cdi_FETCH-LOGICAL-c319t-f1b67d3f89414b15a5809e325db268b5efcb24df7dc1cd7b1102f6a287ea117d3
container_end_page 51
container_issue
container_start_page 41
container_title Marine ecology. Progress series (Halstenbek)
container_volume 440
creator Aksnes, Dag L.
Cao, Francisco J.
description Nearly 50 yr ago, the Michaelis-Menten (MM) model, originally derived for enzyme kinetics, was adapted to characterize microbial nutrient uptake and has become a framework for defining microbial traits in competition theory, evolutionary dynamics, and ocean ecosystem models. We provide theoretical evidence that microbial traits and environmental properties are not appropriately distinguished in current ecological modeling that makes use of MM models, and we propose a framework where inherent microbial traits are explicitly distinguished from environmental variables. This provides novel expectations on how nutrient uptake is affected by cell size, porter density, temperature, and nutrient regimes, and we show that uptake kinetics and tradeoffs likely differ between oligotrophic and eutrophic regimes. We present mechanistic expressions for the affinity and the half-saturation (K) coefficients, and our results suggest thatKmight behave opposite to that commonly assumed in ecological modeling and should be abandoned as an index of uptake efficiency. Our results further suggest that the effect of organism size, considered a master trait in modeling, on specific uptake and growth rates is effectively modified by porter density, although differently in oligotrophic and eutrophic regimes. While nutrient uptake studies have commonly been carried out at a bulk scale, which is much larger than that experienced by the organisms, our study emphasize the need for observations at the scale of the individual.
doi_str_mv 10.3354/meps09355
format article
fullrecord <record><control><sourceid>jstor_proqu</sourceid><recordid>TN_cdi_proquest_miscellaneous_1113222485</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><jstor_id>24875581</jstor_id><sourcerecordid>24875581</sourcerecordid><originalsourceid>FETCH-LOGICAL-c319t-f1b67d3f89414b15a5809e325db268b5efcb24df7dc1cd7b1102f6a287ea117d3</originalsourceid><addsrcrecordid>eNo9kEtLxDAUhYMoWEcX_gChS11Uc5PmtZTBx8CAG12XpE0wYx8xSRf-ezuOzOpyuN85HA5C14DvKWX1w2BDwooydoIK4MArYEqdogKDgEpyis_RRUo7jIHXghdIbcZPG-2YSz12pQ5B_4kctc-p9GM5-DZOxuu-HOcc_f45h6y_7CU6c7pP9ur_rtDH89P7-rXavr1s1o_bqqWgcuXAcNFRJ1UNtQGmmcTKUsI6Q7g0zLrWkLpzomuh7YQBwMRxTaSwGmBxrtDtITfE6Xu2KTeDT63tez3aaU4NAFBCSC3Zgt4d0KVyStG6JkQ_6PjTAG728zTHeRb25sDuUp7iEVxyBGMS6C9VCmH7</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1113222485</pqid></control><display><type>article</type><title>Inherent and apparent traits in microbial nutrient uptake</title><source>JSTOR Archival Journals</source><creator>Aksnes, Dag L. ; Cao, Francisco J.</creator><creatorcontrib>Aksnes, Dag L. ; Cao, Francisco J.</creatorcontrib><description>Nearly 50 yr ago, the Michaelis-Menten (MM) model, originally derived for enzyme kinetics, was adapted to characterize microbial nutrient uptake and has become a framework for defining microbial traits in competition theory, evolutionary dynamics, and ocean ecosystem models. We provide theoretical evidence that microbial traits and environmental properties are not appropriately distinguished in current ecological modeling that makes use of MM models, and we propose a framework where inherent microbial traits are explicitly distinguished from environmental variables. This provides novel expectations on how nutrient uptake is affected by cell size, porter density, temperature, and nutrient regimes, and we show that uptake kinetics and tradeoffs likely differ between oligotrophic and eutrophic regimes. We present mechanistic expressions for the affinity and the half-saturation (K) coefficients, and our results suggest thatKmight behave opposite to that commonly assumed in ecological modeling and should be abandoned as an index of uptake efficiency. Our results further suggest that the effect of organism size, considered a master trait in modeling, on specific uptake and growth rates is effectively modified by porter density, although differently in oligotrophic and eutrophic regimes. While nutrient uptake studies have commonly been carried out at a bulk scale, which is much larger than that experienced by the organisms, our study emphasize the need for observations at the scale of the individual.</description><identifier>ISSN: 0171-8630</identifier><identifier>EISSN: 1616-1599</identifier><identifier>DOI: 10.3354/meps09355</identifier><language>eng</language><publisher>Inter-Research</publisher><subject>Approximation ; Ecological modeling ; Ecosystem models ; Marine ; Molecular diffusion ; Molecules ; Nutrient absorption ; Nutrient uptake ; Oceans ; Phytoplankton ; Vibrio</subject><ispartof>Marine ecology. Progress series (Halstenbek), 2011-10, Vol.440, p.41-51</ispartof><rights>Inter-Research 2011</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c319t-f1b67d3f89414b15a5809e325db268b5efcb24df7dc1cd7b1102f6a287ea117d3</citedby><cites>FETCH-LOGICAL-c319t-f1b67d3f89414b15a5809e325db268b5efcb24df7dc1cd7b1102f6a287ea117d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/24875581$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/24875581$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>315,783,787,27936,27937,58570,58803</link.rule.ids></links><search><creatorcontrib>Aksnes, Dag L.</creatorcontrib><creatorcontrib>Cao, Francisco J.</creatorcontrib><title>Inherent and apparent traits in microbial nutrient uptake</title><title>Marine ecology. Progress series (Halstenbek)</title><description>Nearly 50 yr ago, the Michaelis-Menten (MM) model, originally derived for enzyme kinetics, was adapted to characterize microbial nutrient uptake and has become a framework for defining microbial traits in competition theory, evolutionary dynamics, and ocean ecosystem models. We provide theoretical evidence that microbial traits and environmental properties are not appropriately distinguished in current ecological modeling that makes use of MM models, and we propose a framework where inherent microbial traits are explicitly distinguished from environmental variables. This provides novel expectations on how nutrient uptake is affected by cell size, porter density, temperature, and nutrient regimes, and we show that uptake kinetics and tradeoffs likely differ between oligotrophic and eutrophic regimes. We present mechanistic expressions for the affinity and the half-saturation (K) coefficients, and our results suggest thatKmight behave opposite to that commonly assumed in ecological modeling and should be abandoned as an index of uptake efficiency. Our results further suggest that the effect of organism size, considered a master trait in modeling, on specific uptake and growth rates is effectively modified by porter density, although differently in oligotrophic and eutrophic regimes. While nutrient uptake studies have commonly been carried out at a bulk scale, which is much larger than that experienced by the organisms, our study emphasize the need for observations at the scale of the individual.</description><subject>Approximation</subject><subject>Ecological modeling</subject><subject>Ecosystem models</subject><subject>Marine</subject><subject>Molecular diffusion</subject><subject>Molecules</subject><subject>Nutrient absorption</subject><subject>Nutrient uptake</subject><subject>Oceans</subject><subject>Phytoplankton</subject><subject>Vibrio</subject><issn>0171-8630</issn><issn>1616-1599</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNo9kEtLxDAUhYMoWEcX_gChS11Uc5PmtZTBx8CAG12XpE0wYx8xSRf-ezuOzOpyuN85HA5C14DvKWX1w2BDwooydoIK4MArYEqdogKDgEpyis_RRUo7jIHXghdIbcZPG-2YSz12pQ5B_4kctc-p9GM5-DZOxuu-HOcc_f45h6y_7CU6c7pP9ur_rtDH89P7-rXavr1s1o_bqqWgcuXAcNFRJ1UNtQGmmcTKUsI6Q7g0zLrWkLpzomuh7YQBwMRxTaSwGmBxrtDtITfE6Xu2KTeDT63tez3aaU4NAFBCSC3Zgt4d0KVyStG6JkQ_6PjTAG728zTHeRb25sDuUp7iEVxyBGMS6C9VCmH7</recordid><startdate>20111028</startdate><enddate>20111028</enddate><creator>Aksnes, Dag L.</creator><creator>Cao, Francisco J.</creator><general>Inter-Research</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7TN</scope><scope>7TV</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>20111028</creationdate><title>Inherent and apparent traits in microbial nutrient uptake</title><author>Aksnes, Dag L. ; Cao, Francisco J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-f1b67d3f89414b15a5809e325db268b5efcb24df7dc1cd7b1102f6a287ea117d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Approximation</topic><topic>Ecological modeling</topic><topic>Ecosystem models</topic><topic>Marine</topic><topic>Molecular diffusion</topic><topic>Molecules</topic><topic>Nutrient absorption</topic><topic>Nutrient uptake</topic><topic>Oceans</topic><topic>Phytoplankton</topic><topic>Vibrio</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Aksnes, Dag L.</creatorcontrib><creatorcontrib>Cao, Francisco J.</creatorcontrib><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Pollution Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science &amp; Fisheries Abstracts (ASFA) 1: Biological Sciences &amp; Living Resources</collection><collection>Aquatic Science &amp; Fisheries Abstracts (ASFA) Professional</collection><jtitle>Marine ecology. Progress series (Halstenbek)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Aksnes, Dag L.</au><au>Cao, Francisco J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Inherent and apparent traits in microbial nutrient uptake</atitle><jtitle>Marine ecology. Progress series (Halstenbek)</jtitle><date>2011-10-28</date><risdate>2011</risdate><volume>440</volume><spage>41</spage><epage>51</epage><pages>41-51</pages><issn>0171-8630</issn><eissn>1616-1599</eissn><abstract>Nearly 50 yr ago, the Michaelis-Menten (MM) model, originally derived for enzyme kinetics, was adapted to characterize microbial nutrient uptake and has become a framework for defining microbial traits in competition theory, evolutionary dynamics, and ocean ecosystem models. We provide theoretical evidence that microbial traits and environmental properties are not appropriately distinguished in current ecological modeling that makes use of MM models, and we propose a framework where inherent microbial traits are explicitly distinguished from environmental variables. This provides novel expectations on how nutrient uptake is affected by cell size, porter density, temperature, and nutrient regimes, and we show that uptake kinetics and tradeoffs likely differ between oligotrophic and eutrophic regimes. We present mechanistic expressions for the affinity and the half-saturation (K) coefficients, and our results suggest thatKmight behave opposite to that commonly assumed in ecological modeling and should be abandoned as an index of uptake efficiency. Our results further suggest that the effect of organism size, considered a master trait in modeling, on specific uptake and growth rates is effectively modified by porter density, although differently in oligotrophic and eutrophic regimes. While nutrient uptake studies have commonly been carried out at a bulk scale, which is much larger than that experienced by the organisms, our study emphasize the need for observations at the scale of the individual.</abstract><pub>Inter-Research</pub><doi>10.3354/meps09355</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 0171-8630
ispartof Marine ecology. Progress series (Halstenbek), 2011-10, Vol.440, p.41-51
issn 0171-8630
1616-1599
language eng
recordid cdi_proquest_miscellaneous_1113222485
source JSTOR Archival Journals
subjects Approximation
Ecological modeling
Ecosystem models
Marine
Molecular diffusion
Molecules
Nutrient absorption
Nutrient uptake
Oceans
Phytoplankton
Vibrio
title Inherent and apparent traits in microbial nutrient uptake
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-11-13T10%3A12%3A22IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstor_proqu&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Inherent%20and%20apparent%20traits%20in%20microbial%20nutrient%20uptake&rft.jtitle=Marine%20ecology.%20Progress%20series%20(Halstenbek)&rft.au=Aksnes,%20Dag%20L.&rft.date=2011-10-28&rft.volume=440&rft.spage=41&rft.epage=51&rft.pages=41-51&rft.issn=0171-8630&rft.eissn=1616-1599&rft_id=info:doi/10.3354/meps09355&rft_dat=%3Cjstor_proqu%3E24875581%3C/jstor_proqu%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c319t-f1b67d3f89414b15a5809e325db268b5efcb24df7dc1cd7b1102f6a287ea117d3%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=1113222485&rft_id=info:pmid/&rft_jstor_id=24875581&rfr_iscdi=true