Organic Compounds in Alpine Plants

Skre, O.; Berg, Arthur R.; Wielgolaski, F. E.

doi:10.1007/978-3-642-80937-8_38

Cited by 17 publications

(3 citation statements)

References 29 publications

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“…Moss gametophytes generally have a slightly lower calorific value than associated angiosperms (Forman, 1968;Pakarinen & Vitt, 1974) and this is reflected in lower protein and carbohydrate contents (Skre, Berg & Wielgolaski, 1975). However, the average ash-free calorific value obtained for the immature capsule of the mosses sampled in this study was similar to or slightly lower than theleafy shoot (Table 5).…”

Section: Discussionmentioning

confidence: 63%

The acceptability of mosses as food for generalist herbivores, slugs in the Arionidae

Davidson

Harborne

Longton

1990

Botanical Journal of the Linnean Society

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Observations in the held suggest that moss shoots are seldom freely consumed by either vertebrate or invertebrate herbivores, but damage to immature capsules by slugs is abundant. Palatability of the mosses Mnium hornum, Brachythecium rutabulum and Funaria hygrometrica to the generalist herbivores, Arion subfuscus and A. rufus was investigated by offering the slugs four stages in the moss life cycle; protonema, leafy shoot, immature capsule and mature capsule. The slugs showed a preference for immature capsules and protonemata in all moss species tested. Consumption of shoots of M. hornum and B. rutabulum was negligible even after seven days starvation, but some shoots of F. hygrometrica were eaten in every overnight trial performed. Shoot extracts on starch‐wafer substrate appeared to be more acceptable than intact shoots suggesting that the cell wall provides the barrier to free consumption. The form and location of a possible feeding deterrent is discussed.

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Section: Discussionmentioning

confidence: 63%

The acceptability of mosses as food for generalist herbivores, slugs in the Arionidae

Davidson

Harborne

Longton

1990

Botanical Journal of the Linnean Society

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“…Studies carried out in the Tundra Biome part of International Biological Program emphasized site and life form differences. Thus, it was shown that 1) sugar and lipid concentrations are higher in hydric than xeric habitat mosses (Pakkarinen and Vitt 1974), 2) sugar and lipid concentrations are higher in green than brown moss parts, and 3) that seasonal variation of mono-and polysaccharides is greater in wood than in wet meadow habitats where the absolute concentration was lowest (Skre et al 1975). It is presently not known whether intraspecific variation follows that of the moss synusia mentioned above.…”

Section: Introductionmentioning

confidence: 99%

Carbohydrate and lipid levels in two Polytrichum moss species growing on the Alaskan tundra

Sveinbjörnsson

Oechel

1991

Ecography

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Two tundra Polytrichum moss species were sampled in the field near Barrow, Alaska, three times during the growing season. Lipid, sugar, and starch concentrations of the green above ground shoots and below ground rhizomes were analyzed. Lipid and TNC (sugar + starch) concentrations were higher in Polytrichum commune growing on raised polygon rims than in Polytrichum alpinum. There were no significant differences between the two populations of P. alpinum. Green parts had significantly higher lipid concentrations than rhizomes in P. commune but not in P. alpinum. Both species had significantly higher sugar concentration in green shoots and higher starch concentrations in the rhizome and sugar concentration varied significantly in both species. Seasonal variation of TNC concentration levels were significant only in P. commune. A statistically significant positive relationship was found between lipid and TNC concentration while a stronger statistically significant negative relationship was found between sugar and starch concentration. The first is interpreted as an adaptation to drought in surface waxes and osmoticum while the second is interpreted as conversion indicator depending on tissue and use. Polytrichum mosses resemble evergreen vascular plants in their seasonal stability of these compound groups.

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“…In the present study two dwarf shrubs, the deciduous Vaccinium uUginosum, and the evergreen V. vitis-idaea, are compared with respect to the amount of assimilates translocated into emerging shoots and to the time when these assimilates are produced. The annual variation in their carbohydrate concentrations have previously been studied by several authors (Fonda and Bliss 1966, Stew-art and Bannister 1973, Skre et al 1975, Bannister 1980. Abbreviations -c, planf parts developed during the current year; c-l-1, one-year-old parts, elc.…”

Section: Introductionmentioning

confidence: 99%

The lund symposium on catalysis Lund, Sweden, September 1985

Larson¹

1986

Applied Catalysis

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Organic Compounds in Alpine Plants

Cited by 17 publications

References 29 publications

The acceptability of mosses as food for generalist herbivores, slugs in the Arionidae

The acceptability of mosses as food for generalist herbivores, slugs in the Arionidae

Carbohydrate and lipid levels in two Polytrichum moss species growing on the Alaskan tundra

The lund symposium on catalysis Lund, Sweden, September 1985

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