Reproduction and rarity in British mosses

Longton, R. E.

doi:10.1016/0006-3207(92)90566-6

Cited by 113 publications

(85 citation statements)

References 13 publications

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“…The sexual systems of bryophytes can facilitate sexual reproduction, as monoicous plants do not spatially segregate their reproductive organs -with the opposite occurring in dioicous individuals (Bisang & Hedenäs 2005;Stark et al 2005). This pattern was confirmed in the present study, as the highest fertilization rates (the presence of sporophytes) were associated with monoicous species, demonstrating the efficiency of monoicous systems in carrying out sexual reproduction (Longton 1992;1997;Laaka-Lindberg et al 2000;Söderström & During 2005).…”

Section: Reproductive Aspectssupporting

confidence: 78%

Distribution, ecology, and reproduction of bryophytes in a humid enclave in the semiarid region of northeastern Brazil

2018

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Th e ready availability of water resources distinguishes the humid forest of Chapada do Araripe, Ceará State, Brazil, from the semiarid vegetation around it. Th e regional climate demonstrates a marked seasonality of rainfall that aff ects the ecological strategies of the species found there. We studied the bryophytes of the humid forest of Chapada do Araripe, analyzing their diversity, geographic distributions, and ecological and reproductive aspects. Bryophytes were collected from diff erent substrates using the random-walk method. We gathered information concerning the geographic distribution, functional groups (life forms, light tolerance guilds, and habits) and reproductive aspects of each taxon. We found 76 bryophyte species, predominantly mosses (45 species). Ten new occurrences were recorded for Ceará State, including a new taxon for northeastern Brazil. Most species are widely distributed in that country. Desiccation tolerant (turf) and intermediate (mat and weft) life forms predominated, as well as generalist species in terms of their light requirements. Sixty eight percent of the species demonstrated substrate preferences. Monoicous (67 %) sexual systems predominated over dioicous. Th e species displayed functional groups and reproductive aspects tolerant to adverse conditions that maximized the use of available resources and allowed their persistence under the seasonal conditions of the forest.

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Section: Reproductive Aspectssupporting

confidence: 78%

Distribution, ecology, and reproduction of bryophytes in a humid enclave in the semiarid region of northeastern Brazil

2018

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“…Most other studies on wood living bryophytes have focused on the relation between sexual and asexual reproduction, pointing to the importance of asexual reproduction in maintaining the local population, even though asexual propagules are large and with more limited dispersal than spores (Kimmerer 1994, Laaka-Lindberg et al 2003, Pohjamo and Laaka-Lindberg 2004 To date, no landscape-level study on the dispersal ability of wood living bryophytes has been reported. However, an analysis of British mosses and hepatics (including wood living species; Longton 1992, Laaka-Lindberg et al 2000 showed that species not producing sporophytes are strongly over-represented among rare species in Britain, suggesting that dispersal may significantly reduce overall distribution.…”

Section: Dispersalmentioning

confidence: 99%

Ecology of species living on dead wood – lessons for dead wood management

Jonsson¹,

Kruys²,

Ranius³

2005

Silva Fenn.

330

240

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Dead wood has been identified as a crucial component for forest biodiversity. Recent research has improved our understanding of habitat relations for many species associated with dead wood. However, the consequences for forest management are yet to be explored. In this review we build upon the growing volume of studies on dead wood dependent species, the dynamics of dead wood and ecological theory in order to identify the challenges for forest management at the landscape level. The review has a Fennoscandian focus, but the problems and challenges are similar in many forest ecosystems. We argue that it is necessary to 1) counteract the current shortage in availability of dead wood, 2) concentrate planning at the landscape level in order to minimize isolation and reduce edge effects, 3) create a variety of dead wood types, and 4) utilise available quantitative analytical tools. This calls for new approaches to management that to a large extent includes available knowledge, and to find platforms for planning forested landscapes with diverse holdings.

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“…Espécies de briófitas monoicas são geralmente encontradas com esporófitos (Longton 1992, Oliveira & Pôrto 1998, Maciel-Silva et al 2012. Esse padrão deve-se possivelmente à proximidade entre os gametângios nos ramos de uma mesma planta, o que permite maiores chances de fecundação (Glime 2013).…”

Section: Discussionunclassified

Briófitas na Estação Ecológica da Universidade Federal de Minas Gerais, Brasil

Peñaloza-Bojacá¹,

Fantecelle²,

Araújo³

et al. 2017

Iheringia Ser Bot

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RESUMO -A Estação Ecológica da Universidade Federal de Minas Gerais é uma importante unidade de conservação urbana com vegetação deMata Semidecídua e Cerrado, sendo área de inúmeros estudos com a fauna e fl ora locais. No entanto, informações sobre briófi tas são completamente ausentes, o que difi culta estudos mais aprofundados sobre estas plantas. O objetivo desse estudo foi registrar as espécies de briófi tas presentes na Estação Ecológica da referida Universidade, apresentar informações sobre sua reprodução e dados complementares sobre o micro-habitat e distribuição geográfi ca das espécies. A partir de 60 amostras de briófi tas coletadas em diferentes substratos foram encontradas nove espécies de hepáticas e 15 de musgos. O musgo Isopterygium byssobolax (Müll. Hal) Paris é novo registro para o estado, propágulos assexuados são descritos pela primeira vez em Donnellia lagenifera (Mitt.) W.R. Buck e a hepática Cylindrocolea planifolia (Steph.) R.M. Schust é novamente registrada para o estado após 160 anos.Palavras-chave: diversidade, Cerrado, fl oresta semidecídua, reprodução ABSTRACT -Bryophytes in the Ecological Station of the Federal University of Minas Gerais, Brazil. The Ecological Station of the FederalUniversity of Minas Gerais is an important urban conservation area with semi-deciduous forest and savanna vegetation where several studies on local fauna and fl ora have been carried out. However, there is no scientifi c information on bryophytes, which hinders detailed studies on these plants. The aim of this study was to record the bryophyte species present in the Ecological Station, and to add information on their reproduction, as well as supplementary data on microhabitats and geographic species distribution. Within 60 bryophyte samples collected in diff erent substrates, nine liverwort species and fi fteen moss species were found. The moss Isopterygium byssobolax (Mull.Hal.) Paris is a new record for the state of Minas Gerais; asexual propagules are described for the fi rst time in the moss Donnellia lagenifera (Mitt.) W. R. Buck; and the liverwort Cylindrocolea planifolia (Steph.) R. M. Schust has again been recorded in the state after 160 years.

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Reproduction and rarity in British mosses

Cited by 113 publications

References 13 publications

Distribution, ecology, and reproduction of bryophytes in a humid enclave in the semiarid region of northeastern Brazil

Distribution, ecology, and reproduction of bryophytes in a humid enclave in the semiarid region of northeastern Brazil

Ecology of species living on dead wood – lessons for dead wood management

Briófitas na Estação Ecológica da Universidade Federal de Minas Gerais, Brasil

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