Photosynthetic temperature acclimation in two coexisting seagrasses, Zostera marina L. and Ruppia maritima L.

Evans, Ann S.; Webb, Katie; Penhale, Polly A.

doi:10.1016/0304-3770(86)90095-1

Cited by 114 publications

(78 citation statements)

References 16 publications

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“…Temperatures can approach 30°C during particularly warm summers, stressing eelgrass meadows throughout the southern Chesapeake Bay (Orth & Moore 1983, Moore & Jarvis 2008. Eelgrass can acclimate to temperatures below 25°C (Zimmerman et al 1989), but exposure to simulated heat waves above 25°C causes die-backs (Ehlers et al 2008) that can be linked to impaired photosynthetic performance (Winters et al 2011) as well as to the differential effects on respiration and CO 2 -limited photosynthesis that make eelgrass vulnerable to negative carbon balance above 25°C (Evans et al 1986, Zimmerman et al 1989. CO 2 stimulation of photosynthesis should reduce eelgrass vulnerability to negative carbon balance that is likely to occur with increasing frequency as the climate warms (Zimmerman et al 1997, Invers et al 2001.…”

Section: Introductionmentioning

confidence: 99%

Experimental impacts of climate warming and ocean carbonation on eelgrass Zostera marina

Zimmerman¹,

Hill²,

Jinuntuya³

et al. 2017

Mar. Ecol. Prog. Ser.

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Section: Introductionmentioning

confidence: 99%

Experimental impacts of climate warming and ocean carbonation on eelgrass Zostera marina

Zimmerman¹,

Hill²,

Jinuntuya³

et al. 2017

Mar. Ecol. Prog. Ser.

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“…Leaf and rhizome C : N ratios exhibited reverse trends of leaf and rhizome N content, respectively. 220 photosynthesis and an increase in leaf respiration, the growth of temperate seagrass species can be limited by water temperature elevation (Bulthuis 1983, Wetzel and Penhale 1983, Evans et al 1986, Marsh et al 1986). Thus, reductions in leaf productivity during the summer period in these study sites were probably caused by the effects of high water temperature during this period.…”

mentioning

confidence: 99%

Growth dynamics of the seagrass, Zostera marina in Jindong Bay on the southern coast of Korea

Kim¹,

Kim²,

Kim³

et al. 2012

ALGAE

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Growth dynamics of the seagrass, Zostera marina were examined at the two stations (Myungju and Dagu) in Jindong Bay on the southern coast of Korea. Eelgrass leaf productivities, underwater irradiance, water temperature, dissolved inorganic nitrogen (DIN) in water column and sediments, and tissue carbon (C) and nitrogen (N) content were monitored monthly from March 2002 to January 2004. Underwater irradiance fluctuated highly without a clear seasonal trend, whereas water temperature showed a distinct seasonal trend at both study stations. Water column DIN concentrations were usually less than 5 μM at both study sites. Sediment pore water NH 4 + and NO 3 -+ NO 2 -concentrations were higher at the Myungju site than at the Dagu site. Eelgrass leaf productivity at both study sites exhibited a distinct seasonality, increasing during spring and decreasing during summer. Seasonal variation of eelgrass productivity was not consistent with seasonal patterns of underwater irradiance, or water temperature. Eelgrass tissue C and N content at both study sites also showed significant seasonal variations. Relationships between tissue C and N content and leaf productivities exhibited usually negative correlations at both study sites. These negative correlations implied that the growth of Z. marina at the study sites was probably limited by C and N supplies during the high growth periods.Key Words: growth dynamics; irradiance; nutrient availability; seagrass; temperature; tissue C and N content; Zostera marina INTRODUCTIONSeagrasses are known to play an important role as a primary producer in coastal and estuarine ecosystems (McRoy and McMillan 1977, Zieman and Wetzel 1980, Lee and Dunton 1996. Seagrasses can affect the coastal and estuarine environment by enhancing sedimentation and reducing current and wave energy (Fonseca 1989). Seagrasses also improve water qualities of coasts and estuaries by removing over-enriched inorganic nutrients through leaf uptake McRoy 1984, Lee andDunton 1999). Moreover, seagrass meadows provide habitats for commercially and ecologically valuable marine organisms (Holmquist et al. 1989, Montague andLey 1993). Since seagrass production is essential to support coastal and estuarine ecosystems, examination of seagrass growth dynamics is critical to understand functions and values of seagrass at a certain area in coastal and estuarine ecosystems.The primary productivity of seagrass is usually controlled by underwater irradiance, water temperature, and inorganic nutrient availabilities (Wetzel and Penhale Received July 20, 2012, Accepted August 14, 2012 *Corresponding Author E-mail: klee@pusan.ac.kr Tel: +82-51-510-2255+82-51-510- , Fax: +82-51-581-2962 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. 216 be important factors for estimation of whole ...

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“…Sea-surface temperature was higher than the climatological mean for Monterey Bay during the study period (NOAA CoastWatch El Niño Watch, http:// cwatchwc.ucsd.edu), but well below the 25°C threshold required for thermal stress of Zostera marina (Evans et al 1986, Zimmerman et al 1989. Thus, direct thermal effects cannot explain the plant losses observed here.…”

Section: Discussionmentioning

confidence: 67%

Top-down impact through a bottom-up mechanism. In situ effects of limpet grazing on growth, light requirements and survival of the eelgrass Zostera marina

Zimmerman¹,

Steller²,

Kohrs³

et al. 2001

Mar. Ecol. Prog. Ser.

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Temporal changes in abundance, size, productivity, resource allocation and light requirements of a subtidal eelgrass (Zostera marina L.) population were followed for 2 yr after the September 1993 appearance of a previously rare oval form of the commensal limpet Tectura depicta (Berry) in Monterey Bay, California, USA. By exclusively targeting the epidermis, limpet grazing impaired photosynthetic performance but left respiratory demand, meristematic growth and more than 90% of the leaf biomass intact. The resulting low P :R ratios of grazed plants raised the light requirements for the maintenance of positive carbon balance almost 2-fold relative to healthy ungrazed plants and prevented the summertime accumulation of internal carbon reserves. Shoot density in this once-continuously vegetated 30 ha meadow declined from more than 50 shoots m ). More than 50% of the continuously vegetated meadow was converted to bare sand despite ambient light availability and water temperatures that were favorable for growth of healthy, ungrazed plants. Plant size declined by 50% and internal sugar reserves declined more than 4-fold within 6 mo after the appearance of T. depicta. Plant losses were most extensive during winter, when internal carbon reserves were minimal. The dramatic decline in eelgrass vigor and abundance reported here, despite a physical environment that was favorable for healthy eelgrass survival, illustrates the amplification of top-down control by this relatively inconspicuous limpet through a feeding mechanism that specifically impairs photosynthesis, a bottom-up process.

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Photosynthetic temperature acclimation in two coexisting seagrasses, Zostera marina L. and Ruppia maritima L.

Cited by 114 publications

References 16 publications

Experimental impacts of climate warming and ocean carbonation on eelgrass Zostera marina

Experimental impacts of climate warming and ocean carbonation on eelgrass Zostera marina

Growth dynamics of the seagrass, Zostera marina in Jindong Bay on the southern coast of Korea

Top-down impact through a bottom-up mechanism. In situ effects of limpet grazing on growth, light requirements and survival of the eelgrass Zostera marina

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