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| Koyama, Kohei; Kikuzawa, Kihachiro. |
| We investigated the leaf demography of a temperate woody liana, Akebia trifoliata, in a temperate forest in Japan, Akebia is semi-evergreen: some leaves are shed before winter, while others remain through the winter. Previous studies of semi-evergreen species found that variation in leaf life span was caused by variation in the timing of leaf emergence, Leaves that appeared just before winter over-wintered, while leaves appearing earlier were shed, However, it is unclear whether leaves of the same cohort (i.e., leaves that appear at the same time within a single site) show variation in life span under the effect of strong seasonality. To separate variation in life span among the leaves in each cohort from variation among cohorts, we propose a new method -... |
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Palavras-chave: Akebia trifoliata; Leaf demography; Leaf lifespan; Leaf phenology; Liana; Phenotypic plasticity; Semi-evergreen. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4523 |
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| Pessoa-Queiroz,Rosevaldo; Morais,Helena Castanheira de; Diniz,Ivone Rezende. |
| The seasonal characteristics of the Cerrado region strongly influence food resource predictability and vegetal tissue nutritional content. The aims of this work were to record the abundance and temporal distribution of Gonioterma exquisita Duckworth, 1964 (Lepidoptera, Elachistidae) and its relation with phenological, physical, and chemical traits of the host plant Byrsonima pachyphylla Griseb. (Malpighiaceae). Four nutritional quality parameters were determined for new and mature leaves: gross protein and nitrogen content, dry matter, and in vitro digestibility. We inspected 200 plants per month, searching for G. exquisita caterpillars. About 35.8% of the 2,400 plants inspected presented caterpillars, with an abundance peak in the wet season. Caterpillar... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf phenology; Mechanical defense; Nutritional quality; Restricted diet. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000100011 |
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