Seasonality of epiphytic development of the hydroid Obelia geniculata on cultivated Saccharina japonica (Laminariaceae, Phaeophyta) in Korea

Park, Chan Sun; Hwang, Eunkyoung

doi:10.1007/s10811-011-9755-3

Cited by 29 publications

(51 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, biofouling organisms appear to settle on the distal tips of the kelp first (Park and Hwang 2012;Peteiro and Freire 2013;Førde et al 2016). The disappearance of epiphytes from the kelp coincided with a reduction in kelp blade length and is therefore likely to be a result of erosion.…”

Section: Discussionmentioning

confidence: 99%

“…The underlying causes were not investigated; however, many studies have suggested that the rapid growth of these colonial organisms occurs after a rise in sea temperature (Saunders and Metaxas 2008;Ramsay et al 2009;Park and Hwang 2012;Peteiro and Freire 2013;Freitas et al 2016). Consequently, the onset of biofouling occurs earlier at lower latitudes.…”

Section: Discussionmentioning

confidence: 99%

“…In Spain, severe biofouling takes hold by April (Peteiro and Freire 2013;Freitas et al 2016), in Ireland by June and in Norway by July (Handå et al 2013;Førde et al 2016). In Korea, earlier onset of biofouling hydroids has led to the harvest season ending in May instead of July, which Park and Hwang (2012) attributed to higher sea temperatures. In Nova Scotia, field and laboratory studies have shown that higher temperatures, along with food availability, led to earlier and larger fouling colonies of the bryozoan M. membranacea Metaxas 2008, 2009;Scheibling and Gagnon 2009).…”

Section: Discussionmentioning

confidence: 99%

“…and Laminaria spp. degrade in late summer due to blade breakage and erosion in both wild and farmed kelp populations (Saunders and Metaxas 2008;Andersen et al 2011;Park and Hwang 2012;Zhang et al 2012;Peteiro and Freire 2013;Førde et al 2016). Increasing temperatures may lead to earlier and larger outbreaks of biofouling organisms such as bryozoans which accelerate decay and breakage (Saunders and Metaxas 2008;Scheibling and Gagnon 2009;Park and Hwang 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Severe biofouling reduces the value of kelp harvests as they cannot be used for human consumption. Management options for biofouling include shortening the harvest season, placing farms in more exposed sites or alternatively using the algal biomass in lower quality products (Park and Hwang 2012;Peteiro and Freire 2013;Førde et al 2016). To summarise, the size of individual blades is determined both by new tissue growth and loss through breakage and erosion; on balance the relative contribution of each force changes through the year leading to periods of net gain or loss in blade length.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Regrowth and biofouling in two species of cultivated kelp in the Shetland Islands, UK

et al. 2017

View full text Add to dashboard Cite

The meristem of the kelps Laminaria digitata and Saccharina latissima is located at the base of the blade, growth can therefore continue when the distal blade is lost due to erosion or harvesting. The aim of the study was to determine the regrowth potential of cultivated kelp in the Shetland Islands (UK) to assess feasibility of harvesting twice in one growing season. Laminaria digitata and S. latissima grown on longlines at sea were sampled between March and August, and harvested either at the stipe (whole) or 10 cm above the stipe-blade transition zone (partial) May-August. Image analysis was used to estimate blade length, width, area and fouled area. S. latissima increased in length more than L. digitata between March and August, and in August, while whole S. latissima experienced a net loss in length, partially cut blades had a net increase. Whole blades significantly increased in length for both species but only partially cut S. latissima significantly regrew. In late summer, severe biofouling by tunicates made up 12 and 27% of the biomass at two sites. Interestingly, S. latissima was less fouled than L. digitata. Consequently, S. latissima shows the greatest potential for the application of partial cutting to improve cultivated biomass yields. However, the period for regrowth is limited by low yields in early spring and blade degradation in late summer. In order to optimise biomass yields, further understanding is needed on the abiotic and biotic factors that control growth and biofouling on natural and farmed seaweed.

show abstract

Section: Discussionmentioning

confidence: 99%