Ocean warming increases threat of invasive species in a marine fouling community

Sorte, Cascade J. B.; Williams, Susan D; Zerebecki, Robyn

doi:10.1890/10-0238

Cited by 54 publications

(83 citation statements)

References 10 publications

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“…The competitive superiority of species that have recently been introduced to the Harbor via human activities also likely plays an important role, and this superiority may, itself, be influenced by changes in temperature. These observational data extending decades into the past, together with recent experimental data on shorter time scales (Sorte et al 2010b), lead to predictions of continued increases in non-native dominance with future warming. Finally, the links between climate, phenology, and subsequent community interactions (also see Stachowicz et al 2002, Willis et al 2010) may represent a general mechanism of warming-induced shifts in community composition in a wide range of the earth's ecosystems.…”

Section: Discussionmentioning

confidence: 91%

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Patterns and processes of compositional change in a California epibenthic community

Sorte¹,

Stachowicz²

2011

Mar. Ecol. Prog. Ser.

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As human modifications of the earth's systems have increased, so has interest in understanding past changes in order to predict future ecological trajectories. We compared historical (1969-1971) and contemporary (2005-2009) abundances of species in the marine epibenthic community of Bodega Harbor, California, USA. Between these 2 time periods, we found a decrease in the abundance of native species and an increase in non-native dominance, including of several species that were either rare or absent ~35 yr ago and whose introduction was likely human-mediated. This compositional shift was concurrent with an increase in local water temperature of ~1°C over the same interval. To address the potential role of ocean warming in facilitating the increase of the new dominant species and maintaining compositional shifts, we evaluated the correlation between temperature and recruitment for 15 species. We found that recruitment timing and magnitude were positively related to temperature for non-native species but not for native species overall. Combined with previous results suggesting effects of ocean warming on the relative performance of native vs. nonnative species in this community, our study indicates the potential for continued dominance of nonnative species in Bodega Harbor due to local temperature increases. Simultaneously, anthropogenic transport has been responsible for several recent introductions of competitively dominant species, and shifts in contaminant loads or other factors between the 2 time periods could also contribute to compositional shifts, both historically and in the future. Our results highlight the need for studies of these additional factors, as well as the mechanisms underlying their effects on compositional shifts, in order to predict future changes.

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Section: Discussionmentioning

confidence: 91%

“…For example, the widespread native tunicate Distaplia occidentalis has shown decreased recruitment and survival (Sorte et al 2010b) at elevated temperatures, yet it is common today despite being absent from Boyd's (1972) surveys. Such inconsistencies indicate that other forces may also contribute to compositional shifts.…”

Section: Discussionmentioning

confidence: 99%

Patterns and processes of compositional change in a California epibenthic community

Sorte¹,

Stachowicz²

2011

Mar. Ecol. Prog. Ser.

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“…perspicuus, which is probably an indigenous colonial ascidian with tropical affinity (Kott 1985). Further work is needed to determine whether these ascidians will thrive under warmer conditions, but research conducted in North America has suggested that increased water temperature, in combination with coastal eutrophication, is leading to greater local abundances, higher invasion success and facilitating range expansions of members of these genera (Stachowicz et al 2002, Lambert & Lambert 2003, Sorte et al 2010, Sorte & Stachowicz 2011.…”

Section: Discussionmentioning

confidence: 99%

Short-term in situ warming influences early development of sessile assemblages

Smale¹,

Wernberg²

2012

Mar. Ecol. Prog. Ser.

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Increased temperature is arguably the most important facet of global climate change, as temperature influences processes across all biological scales. In terrestrial systems, the influence of warming on community dynamics has been investigated through field manipulations of temperature but, in contrast, there have been very few warming experiments conducted in the sea. Here, we used heated settlement panels to manipulate microhabitat temperature in situ for > 3 wk, to examine how short-term warming affects community development. We conducted 2 independent experiments in contrasting subtidal habitats in the Perth (Australia) metropolitan area, to determine the usefulness of the field-based approach and to examine consistencies in community-level response to warming. In the first experiment (Swan River estuary), a ~2°C warming treatment resulted in a lower space coverage of a tube-building amphipod and higher coverage of a solitary ascidian, Ciona intestinalis, which contributed to significant differences in community structure. In a second experiment (Hillarys Harbour), the bryozoan Watersipora subtorquata, spirorbid polychaete worms, and C. intestinalis covered less space on warmed surfaces than controls. This was associated with greater biomass of a colonial ascidian and widespread marine pest, Didemnum perlucidum, under warmer conditions, which overgrew and probably outcompeted other taxa. Our results show that community responses to short-term warming are variable and are influenced by individual responses of assemblage dominants. We discuss limitations of the study and highlight the importance of community-level, field-based manipulations of environmental change factors which examine interactions between all available members of the local species pool.

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“…The responses of intertidal and benthic organisms to stressors can be very rapid, and involve ad justments in their photosynthetic and respiratory activities (Southward et al 1995, HoeghGuldberg & Bruno 2010, Sorte et al 2010. Temperate intertidal rocky communities can be dominated by habitat-forming macroalgae that drive the biodiversity and functioning of these ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Short-term ecophysiological and biochemical responses of Cystoseira tamariscifolia and Ellisolandia elongata to environmental changes

Celis-Plá¹,

Martínez²,

Quintano³

et al. 2014

Aquat. Biol.

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Short-term ecophysiological and biochemical responses of Cystoseira tamariscifolia and Ellisolandia elongata to changes in solar irradiance and nutrient levels were analyzed in situ in oligotrophic coastal waters by transferring macroalgae collected at 0.5 and 2.0 m depth and exposing them to 2 irradiance levels (100 and 70% of surface irradiance) and nutrient conditions (nutrient-enriched and non-enriched). Both species were affected by changes in irradiance and nutrient levels. Few interactive effects between these 2 physical stressors were found, suggesting major additive effects on both species. C. tamariscifolia collected at 0.5 m and exposed to 70% irradiance had the highest maximal electron transport rate (ETR max ), saturated irradiance (Ek ETR ) and chl a content and the lowest antioxidant activity. Under the same conditions, E. elongata had increased Ek ETR , antheraxanthin and β-carotene content. At 100% irradiance, C. tamariscifolia collected at 2.0 m had higher maximal quantum yield (F v /F m ), photosynthetic efficiency (α ETR ), ETR max , maximal non-photochemical quenching (NPQ max ), saturation irradiance for NPQ (Ek NPQ ), and antheraxanthin and polyphenol content increased, whereas in E. elongata only α ETR increased. In nutrient-enriched conditions, phenolic compounds, several carotenoids and N content increased in C. tamariscifolia at both depths. E. elongata from 2.0 m depth at 100% irradiance and nutrient-enriched conditions showed increased N content and total mycosporine-like amino acids (MAAs). Our results show rapid photophysiological responses of C. tamariscifolia to variations in in situ irradiance and nutrient conditions, suggesting efficient photoacclimation to environmental changes. In E. elongata, F v /F m and ETR max did not change in the transplant experiment; in contrast, N content, pigment and MAAs (biochemical variables) changed. The responses of these macroalgae to nutrient enrichment indicate oligotrophic conditions at the study site and environmental stress.

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Ocean warming increases threat of invasive species in a marine fouling community

Cited by 54 publications

References 10 publications

Patterns and processes of compositional change in a California epibenthic community

Patterns and processes of compositional change in a California epibenthic community

Short-term in situ warming influences early development of sessile assemblages

Short-term ecophysiological and biochemical responses of Cystoseira tamariscifolia and Ellisolandia elongata to environmental changes

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