Plant Physiological Ecology-Determinants of Progress

Mooney, Harold A.

doi:10.2307/2389250

Cited by 22 publications

(13 citation statements)

References 43 publications

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“…An outstanding challenge in plant ecology is to understand the effects of multiple environmental conditions on plant performance and how effects on specific organs are reflected in whole-plant performance (Mooney 1991;Smallwood et al 1999;Ackerly and Monson 2003). Mangroves are ideal for investigating concepts of scaling and multiple interactions because the forests are strongly structured by environmental gradients.…”

Section: Introductionmentioning

confidence: 99%

Salinity and light interactively affect neotropical mangrove seedlings at the leaf and whole plant levels

et al. 2006

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We have studied the interactive effects of salinity and light on Avicennia germinans mangrove seedlings in greenhouse and field experiments. We hypothesized that net photosynthesis, growth, and survivorship rates should increase more with an increase in light availability for plants growing at low salinity than for those growing at high salinity. This hypothesis was supported by our results for net photosynthesis and growth. Net daily photosynthesis did increase more with increasing light for low-salinity plants than for high-salinity plants. Stomatal conductance, leaf-level transpiration, and internal CO 2 concentrations were lower at high than at low salinity. At high light, the ratio of leaf respiration to assimilation was 2.5 times greater at high than at low salinity. Stomatal limitations and increased respiratory costs may explain why, at high salinity, seedlings did not respond to increased light availability with increased net photosynthesis. Seedling mass and growth rates increased more with increasing light availability at low than at high salinity. Ratios of root mass to leaf mass were higher at high salinity, suggesting that either water or nutrient limitations may have limited seedling growth at high salinity in response to increasing light. The interactive effects of salinity and light on seedling size and growth rates observed in the greenhouse were robust in the field, despite the presence of other factors in the field-such as inundation, nutrient gradients, and herbivory. In the field, seedling survivorship was higher at low than at high salinity and increased with light availability. Interestingly, the positive effect of light on seedling survivorship was stronger at high salinity, indicating that growth and survivorship rates are decoupled. In general, this study demonstrates that environmental effects at the leaf-level also influence whole plant growth in mangroves.

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Section: Introductionmentioning

confidence: 99%

Salinity and light interactively affect neotropical mangrove seedlings at the leaf and whole plant levels

et al. 2006

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“… variation in physiological traits across all hierarchical levels (Bennett 1987b; Feder 1987a,b; Watt 1991), comparative phylogenetic studies of physiological adaptation (Huey 1987), the integration of small‐scale mechanistic and large‐scale ecosystem studies (Grace 1991; Mooney 1991), and the implications of the scaling of metabolic rates (Lawton 1991; see also Nagy 1987). …”

mentioning

confidence: 99%

“…the integration of small‐scale mechanistic and large‐scale ecosystem studies (Grace 1991; Mooney 1991), and…”

mentioning

confidence: 99%

Macrophysiology: large‐scale patterns in physiological traits and their ecological implications

2004

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“…2; see also Ackerly et al, 2000;Chabot and Mooney, 1985;DeLucia et al, 2001;ESA, 2000;Monson, 2003;Mooney, 1991;Mooney et al, 1987;Osmond et al, 1980), a sizeable number of scientists and funding organisations are of the opinion that the relevance of plant physiological ecology as an important discipline has declined to the point that it is no longer considered as one of the important topics of ecological research. The foremost reason for this attitude is that the subject area of plant physiological ecology is typically associated with the autecological plant research conducted during the latter portion of the 20th century or, even worse, simply with gas exchange measurements.…”

Section: Physiological Plant Ecology Of the Past -A Story Of Successmentioning

confidence: 99%

Plant physiological ecology: An essential link for integrating across disciplines and scales in plant ecology

Beyschlag¹,

Ryel²

2007

Flora - Morphology, Distribution, Functional Ecology of Plants

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Plant Physiological Ecology-Determinants of Progress

Cited by 22 publications

References 43 publications

Salinity and light interactively affect neotropical mangrove seedlings at the leaf and whole plant levels

Salinity and light interactively affect neotropical mangrove seedlings at the leaf and whole plant levels

Macrophysiology: large‐scale patterns in physiological traits and their ecological implications

Plant physiological ecology: An essential link for integrating across disciplines and scales in plant ecology

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