e-journal

So close and yet so far away: long-distance dispersal events govern bryophyte metacommunity reassembly

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1. Metapopulation dynamics have been used to explain bryophyte dispersal patterns and they predict
that population abundances vary with the spatial distribution of habitat and with species traits. However,
results from stand and landscape studies are contradictory as both distance-dependent and distance-
independent patterns have been found. These studies have typically included only a few
species, which limits interspecies comparison. It is the time to investigate bryophyte dispersal at the
metacommunity scale.

2. We studied bryophyte dispersal patterns in a system made up of burned matrices containing
unburned residual forest patches. The importance of short- versus long-distance dispersal was examined
by comparing extant and propagule rain communities in residual forest patches of three fire
sites using both species and life strategies.

3. Extant and propagule rain communities were distinct. Several propagule rain species, of all life
strategies, did not originate from the closest extant community, suggesting that regional dispersal
events are important, following the inverse isolation hypothesis.

4. Temporal, spatial and structural characteristics of the environment had a greater influence on dispersal
than distance, which only influenced similarity patterns at the regional scale, highlighting the
importance of propagule source attributes for the conservation of bryophyte metacommunities.

5. Synthesis. Long-distance dispersal may be the rule and not the exception in bryophyte metacommunities.
Therefore, bryophyte metacommunity dynamics depend on several dispersal scales, and residual forest patches can contribute both to local and regional diaspore clouds. Species’ environmental tolerance during establishment and their ability to produce copious amounts of spores may be more important filters in bryophyte metacommunity dynamics than dispersal distance.

Key-words: bryophyte, geographic distance, inverse isolation hypothesis, life strategies, local dispersal, metapopulation theory, propagule cloud, regional dispersal

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Ketersediaan

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Informasi Detail

Judul Seri

Journal of Ecology

No. Panggil

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Penerbit

London : British Ecological Society., 2016

Deskripsi Fisik

Journal of Ecology 2016, 104, 1707–1719

Bahasa

English

ISBN/ISSN

doi: 10.1111/1365-27

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

2016, 104

Subjek

EKOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

Lampiran Berkas

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