L773:2041 2851
Sökning: L773:2041 2851 > (2012-2014) > Altitude affects th...
- Maciel-Silva, Adaíses S.Departamento de Biologia Vegetal, Instituto de Biologia, CP 6109, Universidade Estadual de Campinas (författare)
Altitude affects the reproductive performance in monoicous and dioicous bryophytes : examples from a Brazilian Atlantic rainforest
- Artikel/kapitelEngelska2012
Förlag, utgivningsår, omfång ...
- 2012-07-20
- Oxford University Press (OUP),2012
- printrdacarrier
Nummerbeteckningar
- LIBRIS-ID:oai:DiVA.org:uu-190130
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-190130URI
- https://doi.org/10.1093/aobpla/pls016DOI
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- Språk:engelska
- Sammanfattning på:engelska
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- SwePubSwePub
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- Background and aims: Short life cycles and trade-offs linked to breeding systems make bryophytes good models for the study of plant reproductive strategies. Our aim was to test if differences in sexual reproductive performance of bryophytes in tropical rainforests are driven by the breeding system of the species (monoicous or dioicous) or are mainly affected by the habitat.Methodology: The reproductive performance (sexual branches, gametangia (sex organs), fertilization and sporophyte production) of 11 species was repeatedly monitored and analysed from populations at sea-level and montane sites of a Brazilian Atlantic rainforest over 15 months.Principal results: Monoicous species had the highest reproductive performance, particularly for sexual branches, fertilized gametangia and sporophyte production. Species at the sea-level site produced more sexual branches and had more female-biased sex ratios of gametangia than species in the montane site. Fertilizations were more frequent at the montane site, but sporophyte frequency was similar between the two sites. Fertilization tended to occur mostly in the periods of heavy rain (October to December).Conclusions: Breeding system is not the only major influence on the reproductive performance of bryophytes. We show that habitat is also an important factor determining life-history differentiation. Female-biased sex ratios and low rates of fertilization are seen to be compensated for by high production of reproductive structures at the initial phases of the reproductive cycle.
Ämnesord och genrebeteckningar
- NATURVETENSKAP Biologi Ekologi hsv//swe
- NATURAL SCIENCES Biological Sciences Ecology hsv//eng
Biuppslag (personer, institutioner, konferenser, titlar ...)
- Válio, Ivany F.Departamento de Biologia Vegetal, Instituto de Biologia, CP 6109, Universidade Estadual de Campinas (författare)
- Rydin, HåkanUppsala universitet,Växtekologi och evolution(Swepub:uu)hakarydi (författare)
- Departamento de Biologia Vegetal, Instituto de Biologia, CP 6109, Universidade Estadual de CampinasVäxtekologi och evolution (creator_code:org_t)
Sammanhörande titlar
- Ingår i:AoB Plants: Oxford University Press (OUP), s. pls016-2041-2851
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