Enquete

Andersen, Iben Engelhardt; Flohr, Mikkel; Frantzen, Mikkel Krause; Gade, Solveig; Haarder, Jon Helt; Helland, Frode; Juhl, Carsten Bogh; Ladegaard, Jakob; Lund, Jacob; Nielsen, Henrik Kaare; Kjærgård, Jonas Ross; Kyndrup, Morten; Michelsen, Anders; Rösing, Lilian Munk; Sjöholm, Cecilia; Steinskog, Erik; Stidsen, Marianne; svendsen, erik; Sørensen, Anne Scott; Tygstrup, Frederik; Valtýsson, Bjarki; Willig, Rasmus

doi:10.7146/kok.v44i122.25049

Cited by 1 publication

(2 citation statements)

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“…Moreover, dispersal via vegetative fragments is well documented in freshwater flora. Sand-Jensen et al [12] found that 90% of new macrophyte patches in streams developed from the vegetative fragments that settled in a new area. In their review, De Meester et al [16] corroborated this finding with examples from other plant and animal species.…”

Section: Discussionmentioning

confidence: 99%

“…Settlement of the dispersed asexual propagules has been confirmed in several taxa: plants in lentic habitats [16], in streams [12,17,18], marine macrophytes [19,20], freshwater bryozoans [21], moss [22], sea anemones [23], corals [14,24] and sponges [11], among others. Post dispersal establishment of fragments of submerged freshwater macrophytes is well supported [12,25,26]. Studies which looked into this process in marine macrophytes reported successful establishment [19,20,27–30].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Individual based genetic analyses support asexual hydrochory dispersal in Zostera noltei

Berković

Castilho

Gouveia³

et al. 2018

Preprint

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Dispersal beyond the local patch in clonal plants was typically thought to result from sexual reproduction via seed dispersal. However, evidence for the separation, transport by water, and re-establishment of asexual propagules (asexual hydrochory) is mounting suggesting other important means of dispersal in aquatic plants. Using an unprecedented sampling size and microsatellite genetic identification, we describe the distribution of seagrass clones along tens of km within a coastal lagoon in Southern Portugal. Our spatially explicit individual-based sampling design covered 84 km2 and collected 3 185 Zostera noltei ramets from 803 sites. We estimated clone age, assuming rhizome elongation as the only mechanism of clone spread, and contrasted it with paleo-oceanographic sea level change. We also studied the association between a source of disturbance and the location of large clones. A total of 16 clones were sampled more than 10 times and the most abundant one was sampled 59 times. The largest distance between two samples from the same clone was 26.4 km and a total of 58 and 10 clones were sampled across more than 2 and 10 km, respectively. The number of extremely large clone sizes, and their old ages when assuming the rhizome elongation as the single causal mechanism, suggests other processes are behind the span of these clones. We discuss how the dispersal of vegetative fragments in a stepping-stone manner might have produced this pattern. We found higher probabilities to sample large clones away from the lagoon inlet, considered a source of disturbance. This study corroborates previous experiments on the success of transport and re-establishment of asexual fragments and supports the hypothesis that asexual hydrochory is responsible for the extent of these clones.

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Section: Discussionmentioning

confidence: 99%