Warnstorfia exannulata, an aquatic moss in the Arctic: seasonal growth responses

Guo, Chen; Ochyra, Ryszard; Wu, Peng; Seppelt, R. D.; Yao, Yulong; Bian, Lingen; Li, Suping; Li, Cheng‐Sen

doi:10.1007/s10584-013-0724-5

Cited by 16 publications

(18 citation statements)

References 25 publications

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“…intermedius and Calliergon giganteum , in Char Lake (Sand‐Jensen et al ., ) and C. giganteum in Colour Lake (Hawes et al ., ). However, the annual growth of Warnstorfia exannulata in ponds on Svalbard was about twice as large (80 mm shoot −1 year −1 ) as in D. trifarius (Guo et al ., ); however, this is still considerably lower than the average of 300 mm shoot −1 year −1 previously measured in Drepanocladus exannulatus in a temperate lake (Riis & Sand‐Jensen, ). Overall, the moss primary production contributed significantly to whole lake production as the average net production of each individual is 2.8 mg year −1 , and with an average of 1500 shoots m −2 (T. Riis unpubl.…”

Section: Discussionmentioning

confidence: 57%

Effects of warming on annual production and nutrient‐use efficiency of aquatic mosses in a high Arctic lake

2014

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1. Primary production in Arctic and Antarctic lakes is typically dominated by benthic photosynthetic organisms. These include aquatic mosses that can be very abundant although they must be able to tolerate extreme seasonal climatic variation in irradiance and temperature. Climate change is expected to cause increased nutrient run-off and to prolong ice and snow cover on Arctic lakes. 2. Despite the substantial role that aquatic mosses play in Arctic and Antarctic lakes, our study is the first of its kind to study the in situ growth and nutrient-use efficiency of an Arctic aquatic moss, Drepanocladus trifarius, and how the net production of this species is coupled with a range of climatic factors undergoing change. Here, we verify the use of growth segments as a technique to record historic growth. We then used the method to reconstruct the growth of D. trifarius by comparing in situ measured growth with that determined from growth segments after one year's growth in a high Arctic lake. Finally, we determined nutrient-use efficiency, resorption efficiency and resorption proficiency by measuring the tissue nutrient content in different annual growth segments. 3. The observed annual mean production of D. trifarius was about 2-3 mg DW shoot À1 year À1 expressed as biomass increase and 10-30 mm shoot À1 year À1 expressed as length increase, while the age of most shoots was 7-10 years. About 90% of the variation in annual net production was explained by between-year variability in snow prolongation and net radiation in June. 4. The low tissue-N (1.05%DW) and tissue-P (0.081%DW) contents found in D. trifarius suggest that its growth in Lake Sommerfuglesø is limited by the availability of N and P during summer when the availability of light is sufficient for extensive growth of this species. P resorption was 43% in D. trifarius, whereas no N resorption was recorded, and P proficiency ranged between 0.02 and 0.04% DW, which is comparable to the concentrations measured in other plant types under P limitation, suggesting that P resorption is an advantageous trait for the existence of moss in this oligotrophic environment. 5. Our results suggest that predicted prolongation of snow cover and consequent decrease in net radiation in lakes will decrease annual net primary production. Our results also suggest that species able to exploit elevated nutrient contents have an advantage in more nutrient-rich lakes in future and indicate that dominance patterns may change. We therefore foresee that climate change will have dramatic effects on the annual net production of mosses and thus whole lake primary production in Lake Sommerfuglesø and similar lake types dominated by mosses in the high Arctic.

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Section: Discussionmentioning

confidence: 57%

Effects of warming on annual production and nutrient‐use efficiency of aquatic mosses in a high Arctic lake

2014

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“…Schwarz et al 1992; Núñez-Olivera et al 2010) and many aquatic or semi-aquatic mosses (e.g. Ilyashuk 2002; Guo et al 2013). Assuming that the observed layering is indicative for seasonal variations in growth and environmental conditions (dry and wet season), a rough estimate of the growth rate of the moss rims can be obtained, being in the order of 4–5 mm/year (see also Fig.…”

Section: Discussionmentioning

confidence: 99%

Rare Moss-Built Microterraces in a High-Altitude, Acid Mine Drainage-Polluted Stream (Cordillera Negra, Peru)

Sevink¹,

Verstraten²,

Kooijman³

et al. 2015

Water Air Soil Pollut

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The Rio Santiago in the Cordillera Negra of Peru is severely contaminated by acid mine drainage in its headwaters. In a strongly acid stream, at about 3800 m above sea level (masl), microterraces were found with terrace walls built up of dead moss, with encrustations and interstitial fine, creamy sediment. The stream water was turbid due to the presence of similar suspended sediment, which also occurred as a thin basal layer in inter-rim basins. The moss was identified as the rare bryophyte Anomobryum prostratum (Müll. Hal.) Besch. Chemical and mineralogical analyses show that green, living parts of the moss are gradually coated by Al/Fe (hydr)oxides, inducing their senescence and death. The necromass is covered by creamy crusts through precipitation of schwertmannite-type material from the stream water and simultaneous ‘capture’ of fine sediment. The latter consists of a mixture of precipitate and fine detrital primary minerals. These processes are held responsible for the formation of the microterraces, which regarding their composition and environment seem to be unique. Remarkable is the high As content of the creamy crusts and sediment, attributed to strong sorption of As, whereas its solute concentration is relatively low. This calls for more attention to suspended fine sediment in the assessment of environmental risks of stream water use. Lastly, the results raise serious doubts about the use of aquatic bryophytes as bioindicator for chemical pollution in acid mine drainage-polluted streams.Electronic supplementary materialThe online version of this article (doi:10.1007/s11270-015-2390-x) contains supplementary material, which is available to authorized users.

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“… Map of study site and modern climatology in Disko Bugt region, western Greenland. (a) Schematic showing timing of snowmelt and ice cover and synthesis of chironomid head capsules and aquatic plant leaf waxes based on observations ((Butler, 1982; Guo et al., 2013; Lindegaard & Mæhl, 1992). (b) Monthly precipitation δ 2 H and (c) δ 18 O at Lake N3 (OIPC, version 3.1) (Bowen, 2020; Bowen et al., 2003; IAEA/WMO, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Here, we use aquatic leaf wax (C 24 n ‐alkanoic acid) δ 2 H (δ 2 H wax ) and chironomid head capsule (mostly chitin) δ 18 O (δ 18 O chir ) as proxies of lake water δ 2 H (δ 2 H lw ) and δ 18 O (δ 18 O lw ). These two proxies have distinct and different seasons of production, and therefore have potential to reflect different lake water isotope seasonality (Butler, 1982; Guo et al., 2013; Lindegaard & Mæhl, 1992).…”

Section: Introductionmentioning

confidence: 99%

“…During winter, when Arctic lakes are covered by ice, the lake water isotopic composition remains constant and reflects late summer precipitation isotopic composition (Figures 1b,1c,and 1f) (Gibson, 2002;Jonsson et al, 2009;Saulnier-Talbot et al, 2007). During a brief (1 week-1 month) period in spring, snow and ice melt, flushing large volumes of 2 H-and 18 O-depleted winter precipitation from the lake catchment through the lake (Jonsson et (Butler, 1982;Guo et al, 2013;Lindegaard & Maehl, 1992). (b) Monthly precipitation δ 2 H and (c) δ 18 O at Lake N3 (OIPC, version 3.1) (Bowen, 2020;Bowen et al, 2003;IAEA/WMO, 2020).…”

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confidence: 99%

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Using a Paired Chironomid δ¹⁸O and Aquatic Leaf Wax δ²H Approach to Reconstruct Seasonality on Western Greenland During the Holocene

Corcoran

Thomas

Morrill

2021

Paleoceanog and Paleoclimatol

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The Arctic hydrological cycle is predicted to intensify as climate warms due to increased poleward moisture transport and greater evaporation in areas previously covered by sea ice (Bintanja & Selten, 2014;Kopec et al., 2016). These mechanisms have different seasonal expressions: reduction of sea ice during fall and winter months causes an increase in local evaporation and thus more fall and winter precipitation, whereas strengthening of the meridional moisture gradient due to increasing temperature causes an increase mainly in summer precipitation (Bintanja & Selten, 2014). Changes in Arctic precipitation seasonality may influence feedbacks between hydroclimate, atmospheric and ocean circulation, and plant communities, and are important for projections of sea level rise and ice sheet dynamics (

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Warnstorfia exannulata, an aquatic moss in the Arctic: seasonal growth responses

Cited by 16 publications

References 25 publications

Effects of warming on annual production and nutrient‐use efficiency of aquatic mosses in a high Arctic lake

Effects of warming on annual production and nutrient‐use efficiency of aquatic mosses in a high Arctic lake

Rare Moss-Built Microterraces in a High-Altitude, Acid Mine Drainage-Polluted Stream (Cordillera Negra, Peru)

Using a Paired Chironomid δ¹⁸O and Aquatic Leaf Wax δ²H Approach to Reconstruct Seasonality on Western Greenland During the Holocene

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Warnstorfia exannulata, an aquatic moss in the Arctic: seasonal growth responses

Cited by 16 publications

References 25 publications

Effects of warming on annual production and nutrient‐use efficiency of aquatic mosses in a high Arctic lake

Effects of warming on annual production and nutrient‐use efficiency of aquatic mosses in a high Arctic lake

Rare Moss-Built Microterraces in a High-Altitude, Acid Mine Drainage-Polluted Stream (Cordillera Negra, Peru)

Using a Paired Chironomid δ18O and Aquatic Leaf Wax δ2H Approach to Reconstruct Seasonality on Western Greenland During the Holocene

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Using a Paired Chironomid δ¹⁸O and Aquatic Leaf Wax δ²H Approach to Reconstruct Seasonality on Western Greenland During the Holocene