The Role of Bryophytes in Carbon and Nitrogen Cycling

Turetsky, M. R.

doi:10.1639/05

Cited by 464 publications

(409 citation statements)

References 179 publications

(183 reference statements)

Supporting

Mentioning

390

Contrasting

Unclassified

Order By: Relevance

“…In hummock tundra the dominant plant species of hummocks are sedges and dwarf shrubs, whereas the interhummock areas are predominantly colonized by mosses (Table 2). Mosses are generally thought to slow down nutrient turnover and decomposition, because of their recalcitrant litter and abundant antimicrobial substances (Aerts et al, 1999;Banerjee and Sen, 1979;Basile et al, 1999;Turetsky, 2003;Malmer et al, 2003). However, we found significantly higher N-mineralization rates in interhummock areas under mosses.…”

Section: Effects Of Plant Functional Typescontrasting

confidence: 64%

Microtopography and Plant-Cover Controls on Nitrogen Dynamics in Hummock Tundra Ecosystems in Siberia

Biasi

Wanek

Rusalimova

et al. 2005

Arctic, Antarctic, and Alpine Research

View full text Add to dashboard Cite

Section: Effects Of Plant Functional Typescontrasting

confidence: 64%

Microtopography and Plant-Cover Controls on Nitrogen Dynamics in Hummock Tundra Ecosystems in Siberia

Biasi

Wanek

Rusalimova

et al. 2005

Arctic, Antarctic, and Alpine Research

View full text Add to dashboard Cite

“…Bryophytes have less carbon content than vascular plants, because bryophytes synthesize greater concentrations of phenolics and nonpolar compounds in tissues rather than lignin (Turetsky 2003;Eskelinen et al 2009). Moreover, N utilization efficiency of bryophytes is at least partly related to N recycling during senescence, while vascular plants differ from bryophytes in their N assimilation strategy, mainly relying on N mineralized from litter or soils, and absorbed through roots and vascular tissue (Malmer et al 1994).…”

Section: Discussionmentioning

confidence: 99%

“…Generally, bryophytes are very efficient in assimilating N, which are competitive scavengers of N and can reduce N availability of vascular plants, because bryophytes can not only absorb N from soil directly but can also fix atmospheric N 2 by forming facultative symbioses with cyanobionts (DeLuca et al 2002;Turetsky 2003;Ayres et al 2006). In addition, bryophytes absorb more ammonium-N than nitrate-N and glycine-N.…”

Section: Discussionmentioning

confidence: 99%

“…Alpine ecosystems are also characterized by nutrient limitation, low temperature and long winter (Atkin et al 1996;Körner 2003). Bryophytes often serve as effective traps for water and nutrients, and they are especially efficient in assimilating N (Turetsky 2003;Krab et al 2008). The N fixation capacity of some bryophytes is crucial in boreal ecosystems where N (N) availability is low (Solheim et al 1996;Turetsky 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Bryophytes often serve as effective traps for water and nutrients, and they are especially efficient in assimilating N (Turetsky 2003;Krab et al 2008). The N fixation capacity of some bryophytes is crucial in boreal ecosystems where N (N) availability is low (Solheim et al 1996;Turetsky 2003). It is also notable for Polytrichum commune with uptake of glycine and aspartic acid in the lab, but negligible or no uptake in the field (Krab et al 2008).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Uptake and recovery of soil nitrogen by bryophytes and vascular plants in an alpine meadow

Wang

Shi

et al. 2014

J. Mt. Sci.

View full text Add to dashboard Cite

Due to their particular physiology and life history traits, bryophytes are critical in regulating biogeochemical cycles and functions in alpine ecosystem. Hence, it is crucial to investigate their nutrient utilization strategies in comparison with vascular plants and understand their responses to the variation of growing season caused by climate change. Firstly, this study testified whether or not bryophytes can absorb nitrogen (N) directly from soil through spiking three chemical forms of 15N stable isotope tracer.Secondly, with stronger ability of carbohydrates assimilation and photosynthesis, it is supposed that N utilization efficiency of vascular plants is significantly higher than that of bryophytes. However, the recovery of soil N by bryophytes can still compete with vascular plants due to their greater phytomass. Thirdly, resource acquisition may be varied from the change of growing season, during which N pulse can be manipulated with 15N tracer addition at different time. Both of bryophytes and vascular plants contain more N in a longer growing season, and prefer inorganic over organic N. Bryophytes assimilate more NH4+ than NO3-and amino acid, which can be indicated from the greater shoot excess 15N of bryophytes. However, vascular plants prefer to absorb NO3-for their developed root systems and vascular tissue. Concerning the uptake of three forms N by bryophytes, there is significant difference between two manipulated lengths of growing season. Furthermore, the capacity of bryophytes to tolerate N-pollution may be lower than currently appreciated, which indicates the effect of climate change on asynchronous variation of soil N pools with plant requirements.

show abstract

The phylogeny of Syntrichia: An ecologically diverse clade of mosses with an origin in South America

Jauregui‐Lazo

Brinda

Mishler

2022

American J of Botany

View full text Add to dashboard Cite

Premise To address the biodiversity crisis, we need to understand the evolution of all organisms and how they fill geographic and ecological space. Syntrichia is one of the most diverse and dominant genera of mosses, ranging from alpine habitats to desert biocrusts, yet its evolutionary history remains unclear. Methods We present a comprehensive phylogenetic analysis of Syntrichia, based on both molecular and morphological data, with most of the named species and closest outgroups represented. In addition, we provide ancestral‐state reconstructions of water‐related traits and a global biogeographic analysis. Results We found 10 major well‐resolved subclades of Syntrichia that possess geographical or morphological coherence, in some cases representing previously accepted genera. We infer that the extant species diversity of Syntrichia likely originated in South America in the early Eocene (56.5–43.8 million years ago [Mya]), subsequently expanded its distribution to the neotropics, and finally dispersed to the northern hemisphere. There, the clade experienced a recent diversification (15–12 Mya) into a broad set of ecological niches (e.g., the S. caninervis and S. ruralis complexes). The transition from terricolous to either saxicolous or epiphytic habitats occurred more than once and was associated with changes in water‐related traits. Conclusions Our study provides a framework for understanding the evolutionary history of Syntrichia through the combination of morphological and molecular characters, revealing that migration events that shaped the current distribution of the clade have implications for morphological character evolution in relation to niche diversity.

show abstract

The Role of Bryophytes in Carbon and Nitrogen Cycling

Cited by 464 publications

References 179 publications

Microtopography and Plant-Cover Controls on Nitrogen Dynamics in Hummock Tundra Ecosystems in Siberia

Microtopography and Plant-Cover Controls on Nitrogen Dynamics in Hummock Tundra Ecosystems in Siberia

Uptake and recovery of soil nitrogen by bryophytes and vascular plants in an alpine meadow

The phylogeny of Syntrichia: An ecologically diverse clade of mosses with an origin in South America

Contact Info

Product

Resources

About