North Pacific and North Atlantic digitate Laminaria species (Phaeophyta): hybridization experiments and temperature responses

Dieck, I. tom

doi:10.2216/i0031-8884-31-2-147.1

Cited by 128 publications

(47 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As previously mentioned, integrative statistical analysis showed a significant impact of temperature in the annual intertidal distribution of the Pyropia variabilis (GM) morphotype. Concordantly, a number of studies have demonstrated the regulatory effects of temperature on the ontogenetic development of algal species with heteromorphic life histories (Bolton and Lüning , tom Dieck (Bartsch) , Gevaert et al. , Wiencke and Amsler ).…”

Section: Discussionmentioning

confidence: 96%

Non‐Random Distribution and Ecophysiological Differentiation of Pyropia Species (Bangiales, Rhodophyta) Through Environmental Gradients

Zapata

Meynard

Anguita

et al. 2019

Journal of Phycology

View full text Add to dashboard Cite

Recently 18 Bangiales seaweed species were reported for the Chilean coast, including Pyropia orbicularis and Pyropia variabilis (large [LM] and green [GM] morphotypes). Porphyra/Pyropia spp. occur mainly in the upper intertidal where desiccation stress is triggered by tidal fluctuations. However, the influence of environmental and ecophysiological variables and seasonal differences on Porphyra/Pyropia (microhabitats) intertidal distributions is unknown. Accordingly, we determined (i) the effect of environmental variables (temperature [T], relative humidity [RH], and photosynthetically active radiation [PAR]) and season on distribution, and (ii) physiological (cellular activity and lipid peroxidation [LPX]) and molecular responses (antioxidant enzymes expression at biochemical and transcript level) to desiccation stress in both Pyropia species and morphotypes (common garden experiment, on flat rocky platforms). Multivariate analyses of coverage and abundance in relation to environmental variables revealed a significant effect of temperature on P. variabilis GM distribution, GM dominating almost exclusively on rocky walls (where lowest PAR and T values but maximum RH were registered). Conversely, Pyropia orbicularis and Pyropia variabilis LM were found in high abundance on flat rocky platforms in summer, LM and GM also dominating flat rocky platforms in winter and spring. LPX and catalase activity did not differed among species in summer, while in winter activity and transcription of cat were higher in P. orbicularis than P. variabilis. Results suggest that tolerance to environmental stresses such as temperature could regulate the occurrence of P. variabilis GM on rocky walls; conversely, abundances of P. variabilis and P. orbicularis on flat rocky platforms would be also regulated by other abiotic and/or biotic factors.

show abstract

Section: Discussionmentioning

confidence: 96%

Non‐Random Distribution and Ecophysiological Differentiation of Pyropia Species (Bangiales, Rhodophyta) Through Environmental Gradients

Zapata

Meynard

Anguita

et al. 2019

Journal of Phycology

View full text Add to dashboard Cite

show abstract

“…The prospects for L. ochroleuca contrast with that of the cold‐temperate kelp Laminaria hyperborea , the current assemblage dominant along moderate to wave‐exposed coastlines in the region. L. hyperborea does not perform well at high temperatures (tom Dieck (Bartsch), ; Wiencke, Bischoff, Bartsch, Peters, & Breeman, ), and over the past 40 years has undergone a c . 250‐km range contraction at its warm, trailing‐edge on the Iberian Peninsula (Assis, Lucas, Bárbara, & Serrão, ; Pereira, Engelen, Pearson, Valero, & Serrão, ).…”

Section: Methodsmentioning

confidence: 99%

“…The prospects for L. ochroleuca contrast with that of the cold-temperate kelp Laminaria hyperborea, the current assemblage dominant along moderate to wave-exposed coastlines in the region. L. hyperborea does not perform well at high temperatures (tom Dieck (Bartsch), 1992;Wiencke, Bischoff, Bartsch, Peters, & Breeman, 1994), and over the past 40 years has undergone a c. 250-km range contraction at its warm, trailing-edge on the Iberian Peninsula (Assis, Lucas, Bárbara, & Serrão, 2016;Pereira, Engelen, Pearson, Valero, & Serrão, 2017). Continued ocean warming is expected to lead to further declines in abundance and shifts in its biogeographic distribution, with predicted extinctions of populations currently found along the coasts of Iberia, France, F I G U R E 1 (a) Approximate distribution of Laminaria hyperborea (purple line) and Laminaria ochroleuca (yellow line) along the NE Atlantic coastline.…”

Section: Introductionmentioning

confidence: 99%

Can ecosystem functioning be maintained despite climate‐driven shifts in species composition? Insights from novel marine forests

2018

View full text Add to dashboard Cite

Climate change is driving a redistribution of species and the reconfiguration of ecological communities at a global scale. Persistent warming in many regions has caused species to extend their geographical ranges into new habitats, with thermally tolerant species often becoming competitively dominant over species with colder affinities. Although these climate‐driven changes in species abundance and diversity are well documented, their ecosystem‐level implications are poorly understood, and resolving whether reconfigured communities can maintain fundamental ecosystem functions represents a pressing challenge in an increasingly warmer world. Here, we investigated how climate‐driven substitutions of foundation species influence processes associated with the cycling of organic matter (biomass production, detritus flow, herbivory, decomposition) by comparing two habitat‐forming kelp species with contrasting thermal affinities. We examined the wider ecosystem consequences of such shifts for the observed (and predicted) emergence of novel marine forest communities in the NE Atlantic, which are expected to become more dominated by range‐expanding, warm‐temperate kelp species. Warm‐temperate kelps both accumulated and released 80% more biomass than the cold‐temperate species despite being taxonomically closely related and morphologically similar. Furthermore, the warm‐temperate species accumulated biomass and released detritus year‐round, whereas the cold‐temperate species did so during short, discrete periods. The warm‐temperate kelps supported higher densities of invertebrate grazers and were a preferred food source. Finally, their detritus decomposed 6.5 times faster, despite supporting comparable numbers of detritivores. Overall, our results indicate an important shift in organic matter circulation along large sections of NE Atlantic coastline following the climate‐driven expansion of a warm‐affinity kelp, with novel forests supplying large amounts of temporally continuous—yet highly labile—organic matter. Synthesis. Collectively, our results show that, like species invasions, climate‐driven range expansions and consequent shifts in the identity of dominant species can modify a wide range of important ecosystem processes. However, alterations in overall ecosystem functioning may be relatively limited where foundation species share similar ecological and functional traits.

show abstract

“…Nonetheless, the alliance between the Laminariaceae sensu stricto and Lessoniaceae sensu stricto remains of interest. Considering that Laminaria includes species that exhibit some of the highest temperature tolerances among kelp (tom Dieck (Bartsch) ), this pairing suggests the intriguing possibility that the ancestor to Lessonia had adaptations allowing it to cross the tropics. Lessonia is the only kelp genus that persists exclusively in the Southern Hemisphere (Cho et al.…”

mentioning

confidence: 99%

Kelp transcriptomes provide robust support for interfamilial relationships and revision of the little known Arthrothamnaceae (Laminariales)

Jackson

Salomaki

Lane

et al. 2016

Journal of Phycology

View full text Add to dashboard Cite

If ever there were "charismatic megaflora" of the sea, the Laminariales (kelp) would undoubtedly meet that designation. From the Northeast Pacific kelp forests to the less diverse, but nonetheless dense, kelp beds ranging from the Arctic to the cold temperate waters of the Southern Hemisphere, kelp provide habitat structure and food for a variety of productive marine systems. Consequently, kelp are well represented in the literature, however, understanding their evolution has proven challenging. We used a 152-gene phylogenomics approach to better resolve the phylogeny of the "derived" kelp families (viz., Agaraceae, Alariaceae, Laminariaceae, and Lessoniaceae). The formerly unresolved Egregia menziesii firmly joined a significantly expanded Arthrothamnaceae including Arthrothamnus, Cymathaere, Ecklonia, Macrocystis, Nereocystis, Pelagophycus, Postelsia, Pseudolessonia, Saccharina, and Streptophyllopsis, which rendered both the Laminariaceae and Lessoniaceae monogeneric. A published eight-gene alignment, the most marker-rich prior to this study, was expanded and analyzed to facilitate inclusion of Aureophycus. Although the topology was unchanged at the family level between the transcriptome data set relative to eight-gene analyses, the superior resolving power of the former was clearly established.

show abstract

North Pacific and North Atlantic digitate Laminaria species (Phaeophyta): hybridization experiments and temperature responses

Cited by 128 publications

References 0 publications

Non‐Random Distribution and Ecophysiological Differentiation of Pyropia Species (Bangiales, Rhodophyta) Through Environmental Gradients

Non‐Random Distribution and Ecophysiological Differentiation of Pyropia Species (Bangiales, Rhodophyta) Through Environmental Gradients

Can ecosystem functioning be maintained despite climate‐driven shifts in species composition? Insights from novel marine forests

Kelp transcriptomes provide robust support for interfamilial relationships and revision of the little known Arthrothamnaceae (Laminariales)

Contact Info

Product

Resources

About