An experimental evaluation of the direct and indirect effects of endemic seaweeds, barnacles, and invertebrate predators on the abundance of the introduced rocky intertidal barnacle <i>Balanus glandula</i>

Alam, A.K.M. Rashidul; Noda, Takashi

doi:10.1007/s10144-016-0554-1

Cited by 5 publications

(4 citation statements)

References 54 publications

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“…Additionally, dogwhelk nonconsumptive effects, which are mediated through mucus-released chemical cues indicative of predation risk by dogwhelks (Johnston & Strathmann, 1989), limit B. glandula recruitment (Yorisue, Ellrich & Momota, 2019). Moreover, substrate pre-emption by C. dalli adults limits B. glandula abundance (Alam & Noda, 2016). However, our results show that C. dalli and B. glandula recruit density were not correlated, indicating that there are no interactions between C. dalli and B. glandula recruits under the examined recruit densities.…”

Section: Discussioncontrasting

confidence: 67%

“…Understanding biotic resistance is a central goal of invasion biology (Stachowicz et al, 2002;Kimbro, Cheng & Grosholz, 2013). Recent research from Hokkaido revealed that native dogwhelks (Nucella lima) limit B. glandula abundance (Alam & Noda, 2016) and thus contribute to biotic resistance against B. glandula. These predatory snails prefer B. glandula as prey over C. dalli (Yorisue, Ellrich & Momota, 2019), likely as B. glandula is more nutritious (Palmer, 1983).…”

Section: Discussionmentioning

confidence: 99%

“…We had previously removed all seaweeds (mainly Chondrus yendoi, Saccharina japonica and Ulva spp.) and adult barnacles (C. dalli, B. glandula), which constituted the most abundant organisms, dogwhelks (Nucella lima) and limpets (L. cassis) from the concrete harbour wall to prevent potential physical and/or chemical influences from these organisms on barnacle recruitment (Johnston & Strathmann, 1989;Miller & Carefoot, 1989;Beermann et al, 2013;Alam & Noda, 2016;Yorisue, Ellrich & Momota, 2019). On 8 August 2017, we began the experiment with pristine cages by placing the limpets into the limpet cages during low tide.…”

Section: Manipulative Field Experimentsmentioning

confidence: 99%

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Limpet disturbance effects on barnacle recruitment are related to recruitment intensity but not recruit size

Ellrich¹,

Yorisue

Momota

2020

PeerJ

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Intertidal limpets are important grazers along rocky coastlines worldwide that not only control algae but also influence invertebrates such as common barnacles. For instance, grazing limpets ingest settling barnacle cyprid larvae (hereafter cyprids) and push cyprids and barnacle recruits off the substrate. Such limpet disturbance effects (LDEs) can limit barnacle recruitment, a key demographic variable affecting barnacle population establishment and persistence. In this study, we examined limpet (Lottia cassis) disturbance to barnacle (Chthamalus dalli, Balanus glandula) recruitment on the Pacific coast of Hokkaido, Japan, as information on limpet-barnacle interactions from this region is missing. We investigated, for the first time, whether barnacle size and recruitment intensity influence LDEs on barnacle recruitment. Small barnacles may be less susceptible to LDEs than larger barnacles, because small size may reduce the propbability of limpet disturbance. Moreover, recruitment intensity can influence LDEs, as high recruitment can compensate for LDEs on barnacle recruitment density. In Hokkaido, C. dalli cyprids are smaller than B. glandula cyprids, and C. dalli recruitment is higher than B. glandula recruitment. Thus, we hypothesized that LDEs on C. dalli recruitment would be weaker than those on B. glandula recruitment. To test our hypothesis, we conducted a field experiment during which we manipulated limpet presence/absence on the interior surfaces of ring-shaped cages. After four weeks, we measured barnacle recruitment and recruit size on the interior surfaces of the cages and found negative LDEs on C. dalli and B. glandula recruitment and recruit size. As hypothesized, the LDEs on C. dalli recruitment were weaker than the LDEs on B. glandula recruitment. Additionally, C. dalli recruits were smaller than B. glandula recruits. However, the LDEs on C. dalli recruit size were as strong as the LDEs on B. glandula recruit size, indicating that the smaller C. dalli recruits are not less susceptible to LDEs than B. glandula recruits. Since C. dalli recruitment was higher than B. glandula recruitment, we propose that the higher C. dalli recruitment compensated for the LDEs on C. dalli recruitment. Our findings indicate that the detected differences in LDEs on barnacle recruitment are related to barnacle recruitment intensity but not recruit size.

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Section: Discussioncontrasting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Section: Manipulative Field Experimentsmentioning

confidence: 99%

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Limpet disturbance effects on barnacle recruitment are related to recruitment intensity but not recruit size

Ellrich¹,

Yorisue

Momota

2020

PeerJ

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“…In some cases such effects may be relatively predictable (e.g. a dense algal canopy can provide shelter from desiccation and refuge from predators, Moore et al ., 2007), but sometimes relatively subtle differences in the abundance of one species can have dramatic and often unpredictable indirect effects on the behaviour and abundance of another species (Anderson, 1999; Trussell et al ., 2006; O'Connor et al ., 2013; Rashidul Alam & Noda, 2016). Moreover, the costs and benefits of activity out of the shelter are variable in both time and space, and to maximize benefits and minimize risk at any given time it is important for an organism to be able to react to locally changing conditions and modify its behaviour.…”

Section: Introductionmentioning

confidence: 99%

Barnacle cover modifies foraging behaviour of the intertidal limpetPatella vulgata

et al. 2019

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Limpets and barnacles are important components of intertidal assemblages worldwide. This study examines the effects of barnacles on the foraging behaviour of the limpet Patella vulgata, which is the main algal grazer in the North-west Atlantic. The behaviour of limpets on a vertical seawall on the Isle of Man (UK) was investigated using autonomous radio-telemetry, comparing their activity patterns on plots characterized by dense barnacle cover and plots from which the barnacles had been removed. Limpet behaviour was investigated at mid-shore level, but two different elevations were considered. This experiment revealed a significant effect of barnacle cover on the activity of P. vulgata. Limpets on smooth surfaces spent a greater proportion of total time active than did limpets on barnacles. Movement activity was also greater in areas that were lower down in the tidal range. In general, limpets were either predominantly active during diurnal high or nocturnal low tides and always avoided nocturnal high tides. Individuals on barnacles at the higher elevation concentrated their activity during nocturnal low water. All the other groups of limpets (smooth surfaces on the upper level and all individuals on the lower shore) had more excursions centred around daylight hours with an equal distribution of activity between periods of low and high water. Inter-individual variability was, however, pronounced.

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Seasonal changes in community structure along a vertical gradient: patterns and processes in rocky intertidal sessile assemblages

2017

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Here we considered two fundamental questions in community ecology regarding the relationship between seasonal changes in community structure and environmental gradients: (i) How does the magnitude of seasonal changes in community structure vary along an environmental gradient? (ii) How do the processes driving seasonal changes in community structure vary along an environmental gradient? To examine these questions, we investigated intertidal sessile assemblages inhabiting a notable vertical environmental gradient and fitted a transition probability matrix model to decadal time series data gathered at 25 plots along the Pacific coast of eastern Hokkaido, Japan. We found that the magnitude of seasonal changes in community structure was the largest at mid shore. The major processes driving seasonal changes in community structure changed vertically, reflecting the indirect influence of vertical changes in the physical environment on the vertical distributions of species. An unexpected finding was that the magnitude of seasonal changes in community structure did not reflect the strength of seasonal variation in the physical environment. One explanation may be that sessile organisms living on the high shore have a broad tolerance to environmental stress and are thus less sensitive to the large seasonal variation in physical stress.

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An experimental evaluation of the direct and indirect effects of endemic seaweeds, barnacles, and invertebrate predators on the abundance of the introduced rocky intertidal barnacle Balanus glandula

Cited by 5 publications

References 54 publications

Limpet disturbance effects on barnacle recruitment are related to recruitment intensity but not recruit size

Limpet disturbance effects on barnacle recruitment are related to recruitment intensity but not recruit size

Barnacle cover modifies foraging behaviour of the intertidal limpetPatella vulgata

Seasonal changes in community structure along a vertical gradient: patterns and processes in rocky intertidal sessile assemblages

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