Contrasting size evolution in marine and freshwater diatoms

Litchman, Elena; Klausmeier, Christopher A.; Yoshiyama, Kohei

doi:10.1073/pnas.0810891106

Cited by 219 publications

(222 citation statements)

References 55 publications

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“…Data set collected by Litchman et al (2009) for marine diatoms suggests scaling coe cients for phosphorus-Qmax to be almost identical to that of Qmin, i.e., Qmax being proportional to Qmin with a proportionality constant of Qmax/Qmin = 10 −9.32+10.6 = 19.05. Considering typical values used in literature (e.g., Gal et al, 2009), we assumed a more modest storage capacity of Qmax/Qmin = 10 .…”

Section: Umax Qminmentioning

confidence: 99%

“…For AL, which is mainly composed of diatoms (Table A2), we used the scaling coe cients speci cally for freshwater diatoms found by Litchman et al (2009). For the other groups, we use the coe cients given by Edwards et al (2012).…”

Section: Umax Qminmentioning

confidence: 99%

“…Since long, phytoplankton cell size has been recognized to be an important aspect in determining the ecophysiology of phytoplankton (e.g., Finkel et al, 2010;Litchman et al, 2010, and references therein), and cell size has been increasingly used as a`master trait' (Litchman et al, 2010) in theoretical modelling studies (e.g., Grover, 1991;Armstrong, 1994;Litchman et al, 2009;Kerimoglu et al, 2012, submitted), although the integration of size concept in realistic ecosystem models attempting to reproduce mesocosm or eld observations at relevant ecological time scales has been gaining momentum only recently (but see, e.g., Ward et al, 2012;Wirtz, 2013;Terseleer et al, 2014). Following many decades of dichotomous classi cation of planktonic organisms as`autotrophs' and`heterotrophs' (Flynn et al, 2012), importance of mixotrophy in ecosystem functioning has been increasingly recognized (Mitra et al, 2014, and references therein).…”

Section: Introductionmentioning

confidence: 99%

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Modelling the plankton groups of the deep, peri-alpine Lake Bourget

Kerimoglu

Jacquet²,

Vinçon‐Leite

et al. 2017

Ecological Modelling

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Predicting phytoplankton succession and variability in natural systems remains to be a grand challenge in aquatic ecosystems research. In this study, we identi ed six major plankton groups in Lake Bourget (France), based on cell size, taxonomic properties, food-web interactions and occurrence patterns: cyanobacterium Planktothrix rubescens, small and large phytoplankton, mixotrophs, herbivorous and carnivorous zooplankton. We then developed a deterministic dynamic model that describes the dynamics of these groups in terms of carbon and phosphorus uxes, as well as of particulate organic phosphorus and dissolved inorganic provide evidence for the hypothesis that the abundance of this species before the onset of strati cation is critical for its success later in the growing season, pointing thereby to a priority e ect.

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Section: Umax Qminmentioning

confidence: 99%

Section: Umax Qminmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modelling the plankton groups of the deep, peri-alpine Lake Bourget

Kerimoglu

Jacquet²,

Vinçon‐Leite

et al. 2017

Ecological Modelling

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show abstract

“…Increase in cell size, a strategy that accompanied transitions to the plankton in some marine lineages (for example, the benthic Odontella longicruris (Greville) Hoban versus the larger planktonic O. longicruris var. hyalina (Schrö der) Hoban), might be related to adaptation for higher capacity of nutrient storage given transition to the planktonic environment (Litchman et al, 2009). The repeated appearance of these phenotypes coincident with the transition to planktonic habitats is suggestive of adaptations to life as a suspended particle.…”

Section: Discussionmentioning

confidence: 99%

“…It is unlikely, however, that these traits are selected solely by the requirements of the planktonic environment. Large cell size, for example, is a strategy for defense against predators (Thingstad et al, 2005;Verdy et al, 2009;Yokota and Sterner, 2010) and appears to be favored in marine environments in general (Litchman et al, 2009;Nakov et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Comparative analysis of the interaction between habitat and growth form in diatoms

Nakov¹,

Ashworth

Theriot

2014

The ISME Journal

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We characterized the evolutionary history of growth form (solitary-colonial) and its interaction with species' habitat (planktonic-benthic) across a multi-gene phylogeny encompassing a broad sample of the order-level diversity of diatoms. We treated these characters broadly, modeling the evolution of aggregation of cells into a colony irrespective of the way aggregation is achieved, and relating the growth form to a broad concept of niche location: in the plankton or benthos. The results showed that habitat shifts are rare implying conservatism in niche location at the level of large clades. On the other hand, the evolutionary history of growth form is more dynamic with evolutionary rates that vary across the tree. Analyses of a possible interaction revealed that shifts in growth form are independent of habitat and that traversing between habitats does not hinge upon species' growth form. Our findings help to fill a gap in the understanding of diatom niche and growth form macroevolution and contribute toward a platform for the comparative study of the mechanisms underlying diatom species and functional diversity.

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Equatorial Pacific productivity changes near the Eocene‐Oligocene boundary

et al. 2014

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There is general agreement that productivity in high latitudes increased in the late Eocene and remained high in the early Oligocene. Evidence for both increased and decreased productivity across the Eocene-Oligocene transition (EOT) in the tropics has been presented, usually based on only one paleoproductivity proxy and often in sites with incomplete recovery of the EOT itself. A complete record of the Eocene-Oligocene transition was obtained at three drill sites in the eastern equatorial Pacific Ocean (ODP Site 1218 and IODP Sites U1333 and U1334). Four paleoproductivity proxies that have been examined at these sites, together with carbon and oxygen isotope measurements on early Oligocene planktonic foraminifera, give evidence of ecologic and oceanographic change across this climatically important boundary. Export productivity dropped sharply in the basal Oligocene (~33.7 Ma) and only recovered several hundred thousand years later; however, overall paleoproductivity in the early Oligocene never reached the average levels found in the late Eocene and in more modern times. Changes in the isotopic gradients between deep-and shallow-living planktonic foraminifera suggest a gradual shoaling of the thermocline through the early Oligocene that, on average, affected accumulation rates of barite, benthic foraminifera, and opal, as well as diatom abundance near 33.5 Ma. An interval with abundant large diatoms beginning at 33.3 Ma suggests an intermediate thermocline depth, which was followed by further shoaling, a dominance of smaller diatoms, and an increase in average primary productivity as estimated from accumulation rates of benthic foraminifera.

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Contrasting size evolution in marine and freshwater diatoms

Cited by 219 publications

References 55 publications

Modelling the plankton groups of the deep, peri-alpine Lake Bourget

Modelling the plankton groups of the deep, peri-alpine Lake Bourget

Comparative analysis of the interaction between habitat and growth form in diatoms

Equatorial Pacific productivity changes near the Eocene‐Oligocene boundary

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