Relationships among shoot tissue, canopy and photosynthetic characteristics in the feathermoss Pleurozium schreberi

Rice, Steven K.; Neal, N. P.; Mango, Jesse; Black, Kelly

doi:10.1639/0007-2745-114.2.367

Cited by 23 publications

(21 citation statements)

References 42 publications

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“…The mean value of C mass (35.58 g m À2 ) was lower than previously reported data (C mass = 41.48 g m À2 , nine Sphagnum species) (Zheng et al 2007;Sardans and Penuelas 2008;Aerts et al 2009). However, our mean values for N mass and P mass (1.70 and 0.16 %, respectively) were higher than those of the Sphagnum species from the temperate wetlands (N mass = 1.05 %, 26 observations; P mass = 0.07 %, 14 observations) (Phuyal et al 2008;Rice et al 2008;Wiedermann et al 2009;Jirousek et al 2011;Granath et al 2012) and also higher than those of moss species from tropical sites (N mass = 0.92 %, 40 observations; P mass = 0.05 %, 12 species) Sack 2010, 2011;Wagner et al 2013) and subtropical sites (N mass = 0.77 %, 13 observations) (Shi et al 2012;Liu et al 2013) and were similar to or lower than those of species from the temperate zone (N mass = 1.74 %, five observations; P mass = 0.22 %, three observations) (Arroniz-Crespo et al 2008;Sardans and Penuelas 2008;Tobias and Niinemets 2010;Rice et al 2011). It seems Fig.…”

Section: Discussionmentioning

confidence: 83%

Functional trait scaling relationships across 13 temperate mosses growing in wintertime

Wang

Bao

Feng

et al. 2014

Ecological Research

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Mosses growing in wintertime exert important ecosystem function, but we know little about their fundamental functional trait levels and scaling relationships across species. Thus the present study chose 13 common mosses growing under a temperate deciduous forest in wintertime to measure their light-saturated assimilation rate (A mass ), dark respiration rate (Rd mass ), major element concentrations and stoichiometric ratios (C mass , N mass , P mass , C:P, C:P and N:P) and the shoot mass per area (SMA). Their bivariate log-log scaling relationships were determined by standardized major axes approach. We confirmed that except C mass , the nutrient concentrations and metabolic rates of our mosses were higher than that of mosses growing at warmer sites but the SMA was lower than for Sphagnum species. Furthermore, the functional trait levels were totally lower than those of vascular plant leaves except P mass . Besides, we found the N mass and P mass were significantly positively related to A mass and Rd mass but negatively associated with SMA. The C:P and N:P were also closely linked with A mass , Rd mass and SMA. The SMA was significantly related to Rd mass but not to A mass . Functional trait relationships across the current species deviated from previous studies of mosses but were generally analogous to those of vascular plant leaves only with different scaling. The findings suggest that mosses allocated a greater proportion of nutrients to metabolic components rather than to the non-photosynthetic tissues. In addition, phosphorus was associated more closely with other functional traits than was nitrogen and might play a greater role to withstand the cold temperatures in wintertime for mosses.

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Section: Discussionmentioning

confidence: 83%

Functional trait scaling relationships across 13 temperate mosses growing in wintertime

Wang

Bao

Feng

et al. 2014

Ecological Research

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“…Furthermore, the fact that diffuse solar radiation did not have a significant influence on reproductive patterns (but see below about the influence on female gametophyte size) what may be a result of the relatively low variation in understory light surveyed in this study allows us to more confidently relate differences in fertilization rates to factors such as spatial segregation of sexes, sex ratios and expression rates instead of micro-environmental differences. More refined techniques of light measurement would, though, be welcome to elucidate fine-scale interaction between environment and demographic parameters (Rydgren & Økland, 2001;Rice et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Sex ratio, spatial segregation, and fertilization rates of the epiphyllous mossCrossomitrium patrisiae(Brid.) Müll.Hal. in the Brazilian Atlantic rainforest

Alvarenga

Pôrto

Zartman

2013

Journal of Bryology

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In order to investigate which mechanisms the epiphyllous moss Crossomitrium patrisiae employs to overcome the typical constraints of dioicy in light of its spatially isolated habitat, we tested the predictions that high fertilization rates are achieved due to (1) high rates of sexual expression, (2) balanced sex ratios, and (3) high co-occurrence of both sexes in the same colony (leaf). Seven hundred and ninety-seven ramets were studied for total length, presence, and number of gametoecia and number of fertilized perichaetia in the female according to spatial segregation at leaf-and shrub-scales. High rates of sexual expression (76%) were confirmed. The other two predictions, however, were not upheld as C. patrisae exhibited a strong male bias (0.43 R : 1 = at ramet level, n5604). Despite considerable spatial segregation (co-occurrence of sexes was seen in 36.7% of shrubs and 12.8% of colonies), this species revealed one of the highest fertilization rates ever reported for a dioicous bryophyte at three spatial scales: nearly 90% of the mixed colonies bore sporophytes, 40% of all female ramets, and 74% of female ramets occurring in mixed colonies bore sporophytes. Thus, the relative rareness of females may be a phenotypic response due to heavy investment in sporophyte maturation as demonstrated by the high fertilization success of females. High rates of sexual expression and the occurrence of fertilization in nearly all cases of coincidence of sexes in common colonies, with low levels of abortion, contribute to the sexual reproductive success and, subsequently, the long-term survival of this species. Journal of Bryology 2013 VOL. 35 NO. 2 Alvarenga et al. Crossomitrium patrisiae sex ratio, spatial segregation, and fertilization rates Journal of Bryology 2013 VOL. 35 NO. 2 Alvarenga et al. Crossomitrium patrisiae sex ratio, spatial segregation, and fertilization rates Journal of Bryology 2013 VOL. 35 NO. 2 Alvarenga et al. Crossomitrium patrisiae sex ratio, spatial segregation, and fertilization rates Journal of Bryology 2013 VOL. 35 NO. 2

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“…Because the upper layer of the densely packed photosynthetic tissues may block the light from the deeper layers, fewer nutrients will be invested in photosynthetic capacities in these layers. This thus limits the photosynthetic rates of the whole moss shoot, even if arranged without self-shading, as in our experiment (Rice, Aclander, & Hanson, 2008;Rice, Neal, Mango, & Black, 2011;Zotz, Schweikert, Jetz, & Westerman, 2000). As a result, A mass of these compact species was very low and the LCP and LSP were relatively high.…”

Section: Explaining Species Traitsmentioning

confidence: 70%

Comparisons of photosynthesis‐related traits of 27 abundant or subordinate bryophyte species in a subalpine old‐growth fir forest

Wang

Bader

Liu

et al. 2017

Ecology and Evolution

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Bryophyte communities can exhibit similar structural and taxonomic diversity as vascular plant communities, just at a smaller scale. Whether the physiological diversity can be similarly diverse, and whether it can explain local abundance patterns is unknown, due to a lack of community‐wide studies of physiological traits. This study re‐analyzed data on photosynthesis‐related traits (including the nitrogen, phosphorus and chlorophyll concentrations, photosynthetic capacities, and photosynthetic nutrient use efficiencies) of 27 bryophyte species in a subalpine old‐growth fir forest on the eastern Tibetan Plateau. We explored differences between taxonomic groups and hypothesized that the most abundant bryophyte species had physiological advantages relative to other subdominant species. Principal component analysis (PCA) was used to summarize the differences among species and trait values of the most abundant and other co‐occurring subdominant species. Species from the Polytrichaceae were separated out on both PCA axes, indicating their high chlorophyll concentrations and photosynthetic capacities (axis 1) and relatively high‐light requirements (axis 2). Mniaceae species also had relatively high photosynthetic capacities, but their light saturation points were low. In contrast, Racomitrium joseph‐hookeri and Lepidozia reptans, two species with a high shoot mass per area, had high‐light requirements and low nutrient and chlorophyll concentrations and photosynthetic capacities. The nutrient concentrations, photosynthetic capacities, and photosynthetic nutrient use efficiencies of the most abundant bryophyte species did not differ from co‐occurring subdominant species. Our research confirms the links between the photosynthesis‐related traits and adaptation strategies of bryophytes. However, species relative abundance was not related to these traits.

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Relationships among shoot tissue, canopy and photosynthetic characteristics in the feathermoss Pleurozium schreberi

Cited by 23 publications

References 42 publications

Functional trait scaling relationships across 13 temperate mosses growing in wintertime

Functional trait scaling relationships across 13 temperate mosses growing in wintertime

Sex ratio, spatial segregation, and fertilization rates of the epiphyllous mossCrossomitrium patrisiae(Brid.) Müll.Hal. in the Brazilian Atlantic rainforest

Comparisons of photosynthesis‐related traits of 27 abundant or subordinate bryophyte species in a subalpine old‐growth fir forest

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