Macroalgae, a suitable indicator of the ecological status of coastal rocky communities in the NE Atlantic

Juanes, José A.; Guinda, Xabier; Puente, Araceli; Revilla, José A.

doi:10.1016/j.ecolind.2007.04.005

Cited by 149 publications

(83 citation statements)

References 19 publications

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“…can be classified as opportunistic (Juanes et al, 2008). An increase in abundance of the alien species Asparagopsis armata was also noted in the investigated area (DAISIE, 2008).…”

Section: Changes In Kelp Forest Communitymentioning

confidence: 99%

Climate driven changes in subtidal kelp forest communities in NW Spain

Voerman

Llera²,

Rico

2013

Marine Environmental Research

108

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a b s t r a c tReconstructions suggest a massive decline of nearly 1400 ha of kelp forest in North Western Spain in 2007. In line with global rising temperatures, we hypothesized that Sea Surface Temperature (SST) surpassed a lethal threshold for kelp. We examined whether changes in SST correlated to the proposed decline in kelp forest. All investigated SST characteristics suggested to affect kelp abundance increased significantly during the past thirty years, reaching extreme values during the last decade. In addition over the past two decades, the landscape formerly dominated by both cold and warm temperate canopy forming and understory species changed to one dominated by warm temperate understory species, resulting in a loss of vertical community structure. Fisheries landing data of kelp associated species was used to support the suggested change in kelp abundance. Subsequent recovery of the kelp appears to be occurring in deeper waters.

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“…can be classified as opportunistic (Juanes et al, 2008). An increase in abundance of the alien species Asparagopsis armata was also noted in the investigated area (DAISIE, 2008).…”

Section: Changes In Kelp Forest Communitymentioning

confidence: 99%

Climate driven changes in subtidal kelp forest communities in NW Spain

Voerman

Llera²,

Rico

2013

Marine Environmental Research

108

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“…Due to their high diversity, sessile nature and wide distribution, macroalgae are considered good descriptors of rocky shore assemblages, and they are widely used to characterise and monitor coastal systems (Leliaert et al 2000;Piazzi et al 2002) and anthropogenic disturbances (Piazzi et al 2001;Díez et al 2009). Therefore, macroalgae have been included as key organisms in the determination of the ecological quality status of coastal water bodies in the European water Framework Directive (Ballesteros et al 2007;Juanes et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Spatial variability in intertidal macroalgal assemblages on the North Portuguese coast: consistence between species and functional group approaches

et al. 2012

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Natural assemblages are variable in space and time; therefore, quantification of their variability is imperative to identify relevant scales for investigating natural or anthropogenic processes shaping these assemblages. We studied the variability of intertidal macroalgal assemblages on the North Portuguese coast, considering three spatial scales (from metres to 10 s of kilometres) following a hierarchical design. We tested the hypotheses that (1) spatial pattern will be invariant at all the studied scales and (2) spatial variability of macroalgal assemblages obtained by using species will be consistent with that obtained using functional groups. This was done considering as univariate variables: total biomass and number of taxa as well as biomass of the most important species and functional groups and as multivariate variables the structure of macroalgal assemblages, both considering species and functional groups. Most of the univariate results confirmed the first hypothesis except for the total number of taxa and foliose macroalgae that showed significant variability at the scale of site and area, respectively. In contrast, when multivariate patterns were examined, the first hypothesis was rejected except at the scale of 10 s of kilometres. Both uni-and multivariate results indicated that variation was larger at the smallest scale, and thus, smallscale processes seem to have more effect on spatial variability patterns. Macroalgal assemblages, both considering species and functional groups as surrogate, showed consistent spatial patterns, and therefore, the second hypothesis was confirmed. Consequently, functional groups may be considered a reliable biological surrogate to study changes on macroalgal assemblages at least along the investigated Portuguese coastline.

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“…Macroalgae have been widely used as indicators of pollution gradients and to document the ecological status of habitats (Fong et al 2001, Orfanidis et al 2001, Panayotidis et al 2004, EPA 2008, Juanes et al 2008, Lin and Fong 2008. In the present study, it was postulated that the spatial and temporal patterns of the structural attributes of macroalgal assemblages, and their nutrient tissue content, can be used to provide dynamic metrics to assess restoration success and serve as early-warning indicators of unexpected or undesired conditions within an adaptive management framework ).…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal patterns and nutrient status of macroalgae in a heavily managed region of Biscayne Bay, Florida, USA

et al. 2011

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The coastal bays of South Florida are located downstream of the Florida Everglades, where a comprehensive restoration plan will strongly impact the hydrology of the region. Submerged aquatic vegetation communities are common components of benthic habitats of Biscayne Bay, and will be directly affected by changes in water quality. This study explores community structure, spatio-temporal dynamics, and tissue nutrient content of macroalgae to detect and describe relationships with water quality. The macroalgal community responded to strong variability in salinity; three distinctive macroalgal assemblages were correlated with salinity as follows: (1) low-salinity, dominated by Chara hornemannii and a mix of filamentous algae; (2) brackish, dominated by Penicillus capitatus, Batophora oerstedii, and Acetabularia schenckii; and (3) marine, dominated by Halimeda incrassata and Anadyomene stellata. Tissue-nutrient content was variable in space and time but tissues at all sites had high nitrogen and N:P values, demonstrating high nitrogen availability and phosphorus limitation in this region. This study clearly shows that distinct macroalgal assemblages are related to specific water quality conditions, and that macroalgal assemblages can be used as community-level indicators within an adaptive management framework to evaluate performance and restoration impacts in Biscayne Bay and other regions where both freshwater and nutrient inputs are modified by water management decisions.

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Macroalgae, a suitable indicator of the ecological status of coastal rocky communities in the NE Atlantic

Cited by 149 publications

References 19 publications

Climate driven changes in subtidal kelp forest communities in NW Spain

Climate driven changes in subtidal kelp forest communities in NW Spain

Spatial variability in intertidal macroalgal assemblages on the North Portuguese coast: consistence between species and functional group approaches

Spatio-temporal patterns and nutrient status of macroalgae in a heavily managed region of Biscayne Bay, Florida, USA

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