Species richness of marine macrophytes is correlated to a wave exposure gradient

Nishihara, Gregory N.; Terada, Ryuta

doi:10.1111/j.1440-1835.2010.00587.x

Cited by 28 publications

(27 citation statements)

References 61 publications

(134 reference statements)

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“…For example, Wing and Patterson (1993) found that higher wave motion decreased light intensity. Nishihara and Terada (2010) found that Phaeophyta increased in species richness with increasing wave exposure, which may explain the higher percentage of phaeophyta in the Jiahe River estuary and at Zhifu Island in April-June (Table 5).…”

Section: Discussionmentioning

confidence: 91%

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Temporal and spatial variations in the distribution of macroalgal communities along the Yantai coast, China

Han

Liu

2014

Chin. J. Ocean. Limnol.

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To explore the impact of environmental variables on macroalgal communities, their temporal and spatial distributions were examined along the Yantai coast, China between April 2010 and March 2011. Macroalgae sampling was conducted monthly at four sites along the coast: Jiahe River estuary, Zhifu Island, Fisherman's Wharf, and Yangma Island. The species composition and abundance, and their relationship with environmental variables were assessed. Along the Yantai coast, 35 macroalgae species were identifi ed, including 24 Rhodophyta spp., 7 Chlorophyta, and 4 Phaeophyta spp. Highest species numbers were recorded in the summer at all sampling sites, except in the Jiahe River estuary. Macroalgae biomass was the greatest in the summer. Year-round, the highest species number and dry biomass recorded at Fisherman's Wharf and Yangma Island was attributed to the substrate type. In summer, Ulva pertusa Kjellman was the dominant species identifi ed along the Yantai coast, which indicates a risk of macroalgae blooms. Our results show that seawater temperature and nutrients appear to signifi cantly affect the temporal and spatial patterns of macroalgal abundance along the Yantai coast. The effects of environmental variables on the macroalgae on the Yantai coast need further study.

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Section: Discussionmentioning

confidence: 91%

“…Together with other environmental variables, wave exposure may affect macroalgal distribution (Gaylord et al, 2002;Nishihara and Terada, 2010). On the Yantai coast, the strongest waves are mainly in the northeast direction, and the tidal range is about 152 cm (Liu et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Temporal and spatial variations in the distribution of macroalgal communities along the Yantai coast, China

Han

Liu

2014

Chin. J. Ocean. Limnol.

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“…Kang et al (2011) also noted that seasonal variations in macroalgal assemblages near the MLW are more dynamic than those in assemblages in the deeper subtidal or higher intertidal zones. In many studies of the effects of wave exposure on macroalgal communities, intermediate levels of water motion enhance diversity and abundance of seaweeds by accelerating nutrient and gas exchange (Prathep 2005, Nishihara andTerada 2010). In summary, our intensive study of macroalgal assemblages on the Marado coast provided great insights into the distribution pattern of macroalgal assemblages in unpolluted marine areas of Jeju Island.…”

Section: Resultsmentioning

confidence: 99%

“…2). Turf or mat-forming macroalgae can effectively defend themselves against wave action and desiccation stress by folding each other, simple forms, and tough and protractile thallus (Hay 1981, Prathep 2005, Nishihara and Terada 2010, Nishihara et al 2011. S. thunbergii, which constituted a large portion of the high and mid-intertidal assemblage, can effectively resist desiccation by retaining water among the numerous small leaves that surround its branches and by folding onto other individuals as well as being protected from wave action by its tough branches and cylindrical outline.…”

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confidence: 99%

Seasonal variation in depth-stratified macroalgal assemblage patterns on Marado, Jeju Island, Korea

Kang¹,

Kim²

2012

ALGAE

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Marado is a small rocky island located off the south coast of Jeju Island and acts as the first gateway of the Kuroshio Current to Korean coastal ecosystems. This island is one of the most unpolluted and well preserved sea areas around the Jeju coast. We extensively observed macroalgal assemblages of species and functional forms in the intertidal and subtidal zones through four seasons on Marado, Jeju Island, Korea to demonstrate the seasonality of vertical distribution patterns and biomass. A total of 144 species (14 Chlorophyta, 40 Phaeophyta, and 90 Rhodophyta) were identified in quadrats and were analyzed seasonally and vertically to define the variation patterns. The annual mean biomass of macroalgae was 2,932.3 g wet wt m -2 and the highest value was recorded in spring and the lowest was in winter. The annual dominant species by biomass was Ecklonia cava followed by Sargassum fusiforme, S. macrocarpum, Amphiroa galapagensis, Chondria crassicaulis, and S. thunbergii. Obvious biomass zonation patterns of macroalgal species were detected in relation to tidal height and depth. Macroalgal biomass, diversity index (H'), and community dynamics were the highest in the shallow subtidal zone. Species number was higher in the subtidal than in the intertidal zone and similar throughout the entire subtidal zone. Our results provide revealing insights into the distribution patterns of macroalgal assemblages in an unpolluted sea area around Jeju Island.Key Words: biomass; distribution; Jeju Island; macroalgae; Marado; seasonal variation INTRODUCTIONMacroalgal ecologists strive to understand the environmental factors and phenomena that affect macroalgal zonation patterns (Choi and Kim 2004, Balata and Piazzi 2008, Konar et al. 2009, Kang et al. 2011. Macroalgal zonation patterns commonly undergo changes in abundance, diversity, and community dynamics through natural processes along tidal height and depth gradients. The highest level of these patterns is generally found at mean low water (MLW) and decreases with both increasing depth and intertidal height (Garrabou et al. 2002, Choi and Kim 2004, Kang and Kim 2004, Balata et al. 2006, Konar et al. 2009. Although numerous studies have described these general zonation patterns, recent studies have suggested that these patterns may not be generalizable across geographic regions because peaks in abundance or diversity are not found consistently in particular depth strata (Balata and Piazzi 2008, Konar et al. 2009, Heo et al. 2011, Kang et al. 2011. Therefore, there is great interest in investigating not only these exceptional patterns but also different zonation patterns in species composition, diversity, abundance, and community dynamics among areas at local scales (Konar et al. 2009, Heo et al. 2011, Kang et al. 2011, Shin et al. 2011.Macroalgal growth is influenced by multi-factorial in- This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrest...

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“…wave action). Indeed, wave exposure is one of the major factors directly or indirectly influencing the structure of algal assemblages (Rindi and Guiry 2004, Nishihara and Terada 2010, Borja et al 2013. Although increasing wave action is a key factor in supplying nutrients for macroalgae (Martins et al 2013), hydrodynamic pressure can also remove epibionts and prevent them from settling (Kersen et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Epiphytic flora on <em>Gelidium corneum</em> (Rhodophyta: Gelidiales) in relation to wave exposure and depth

Quintano¹,

Díez²,

Muguerza³

et al. 2015

Sci. Mar.

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Summary:The canopy-forming macroalga Gelidium corneum (Hudson) J.V. Lamouroux plays a major role in the functioning of the subtidal ecosystem of the Cantabrian Sea (northern Spain). Despite its importance, little is known about the factors that may potentially affect the distribution pattern of its epiphytic flora. Here we examine two indirect factors: coastal orientation (N and NW) and depth (3 and 7 m), as proxies for wave exposure and light availability, respectively. We test their effects on the total epiphytic load, alpha diversity (species richness, Shannon, Simpson and evenness measures) and multivariate structure of the epiphytic flora growing on G. corneum in subtidal waters off the Basque coast. Plocamium cartilagineum, Dictyota dichotoma and Acrosorium ciliolatum were found to be the most common epiphytes. Significant interactive effect of coastal orientation and depth were observed for species composition and abundance of epiphytic flora. Increased wave exposure resulted in a lower epiphyte load and a less diverse community, suggesting that under high hydrodynamic conditions epiphytes were more likely to become dislodged from hosts. However, light availability only had a significant effect on the distribution of epiphytes below a certain threshold of wave action, with the epiphytic load being 30-40% greater on shallow bottoms.Keywords: epibionts; host frond; light availability; spatial variability; macroalgae; wave action. Flora epífita deGelidium corneum (Rhodophyta: Gelidiales) en relación a la exposición al oleaje y la profundidad Resumen: El alga formadora de copa Gelidium corneum (Hudson) J.V. Lamouroux tiene un papel fundamental en el funcionamiento de los ecosistemas submareales del mar Cantábrico (norte de España). A pesar de su importancia, se sabe poco sobre los factores que afectan a la distribución de su flora epífita. En este estudio, examinamos dos factores indirectos: la orientación de la costa (N y NO) y la profundidad (3 y 7 m), como factores representativos de la exposición al oleaje y la disponibilidad de luz, respectivamente. Este estudio testa sus efectos sobre la carga total de epífitos, la alfa-diversidad (riqueza de especies, Shannon, Simpson y equitatividad) y la estructura multivariable de la flora epífita que crece sobre G. corneum en las aguas submareales de la costa vasca. Los epífitos más comunes fueron Plocamium cartilagineum, Dictyota dichotoma y Acrosorium ciliolatum. Se observó un efecto interactivo de la orientación de la costa y la profundidad para la composición de especies y la abundancia de la flora epífita. En las localidades con mayor exposición al oleaje la carga epífita era menor y la comunidad menos diversa, sugiriendo que bajo condiciones de un elevado hidrodinamismo los epífitos eran más susceptibles de ser desprendidos de su hospedador. Sin embargo, la disponibilidad de luz solo tuvo un efecto significativo en la distribución de los epífitos por debajo de ciertos umbrales de la acción del oleaje, siendo la carga de epifitos un 30-40% mayor en los fondos ...

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Species richness of marine macrophytes is correlated to a wave exposure gradient

Cited by 28 publications

References 61 publications

Temporal and spatial variations in the distribution of macroalgal communities along the Yantai coast, China

Temporal and spatial variations in the distribution of macroalgal communities along the Yantai coast, China

Seasonal variation in depth-stratified macroalgal assemblage patterns on Marado, Jeju Island, Korea

Epiphytic flora on <em>Gelidium corneum</em> (Rhodophyta: Gelidiales) in relation to wave exposure and depth

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