FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3131752880> ?p ?o ?g. }

• W3131752880 abstract "This study investigated how the combined stressors of ocean warming and acidification (reduced pH and elevated CO(_2)) impact seaweed species that the commercially exploited blacklip abalone (Haliotis rubra) relies on for all components of its life cycle. The impacts of warming and acidification on seaweeds that provide habitat, a food source or induce settlement of larvae, were assessed through a series of manipulative laboratory experiments.To provide context for experimental work, a field survey was undertaken that examined seaweed biomass, species composition and nutritional quality (fatty acid composition and nitrogen content) in three sites that spanned a latitudinal gradient in eastern Tasmania (Chapter 2). Results showed that the nutritional quality of the understory seaweeds consumed by H. rubra increased from the northern to southern site. This increase was consistent with higher productivity of H. rubra in the southern region and was driven by a higher biomass of red species at the southern sites, which were rich in polyunsaturated fatty acids (PUFA) and nitrogen.Most studies examining the response of seaweeds to ocean acidification in laboratory studies have used experimental treatments based on future projections for the open ocean. This is problematic as pH within seaweed beds is highly variable (compared to stable open ocean), and pH fluctuations can influence the response of seaweeds to acidification. Chapter 3 examined the effect of fluctuating pH on two sympatric red seaweeds (Callophyllis lambertii and Plocamium dilatatum) under both current and future ocean pH. Only C. lambertii was affected by fluctuating pH, with reduced growth and photosynthetic rates relative to the static conditions. The differential responses of two sympatric red seaweeds led to the incorporation of pH fluctuations in the treatments of all subsequent experiments, to provide environmental realism.Chapter 4 investigated the influence of marine heatwaves along with future warming and acidification on the brown seaweed Phyllospora comosa, which forms primary habitat for H. rubra and is an important food source. P. comosa was physiologically tolerant to marine heatwaves under both current and future ocean conditions. This tolerance was likely due to an adjustment in fatty acid composition with a reduction in the proportion of PUFA to saturated fatty acids (SFA) maintaining optimum membrane fluidity at elevated temperatures. Furthermore, energetic savings arising from increased CO(_2) supply (i.e. acidification) may have facilitated this adjustment when marine heatwaves were superimposed on future ocean warming and acidification.Chapter 5 examined the effects of warming and acidification on crustose coralline algae (CCA) that are known to induce settlement of H. rubra larvae. A scenario-based approach was used in which the responses of CCA (genus Sporolithon) cultured under current ocean temperature and pH were compared to responses under temperature and pH levels expected by 2030, 2050 and 2100 (RCP 8.5 emissions scenario). Results suggest that CCA are likely to be significantly negatively affected by combined warming and acidification as soon as 2030.The findings of this thesis suggest that the key habitat forming seaweed in abalone habitat, P. comosa, is likely to acclimate to future ocean conditions. However, this acclimation mechanism (reduction in PUFA), along with a reduction in nitrogen content observed under global ocean change in both P. comosa and C. lambertii, may lead to a significant reduction the nutritional quality of these seaweeds for H. rubra. Whether other seaweeds utilised as food sources such as the red seaweeds that were abundant in our southern field sites will respond in similar ways requires investigation. Recruitment of H. rubra larvae may be negatively impacted within the next two decades via adverse impacts of climate change on CCA assemblages. These findings highlight the need for managers of commercially exploited species to consider the effects of climate change on the seaweeds they rely on." @default.
• W3131752880 created "2021-03-01" @default.
• W3131752880 creator A5084295982 @default.
• W3131752880 date "2020-01-01" @default.
• W3131752880 modified "2023-09-27" @default.
• W3131752880 title "Effects of ocean acidification and warming on shallow subtidal temperate seaweed assemblages in eastern Tasmania, Australia : implications for the blacklip abalone (Haliotis rubra)" @default.
• W3131752880 hasPublicationYear "2020" @default.
• W3131752880 type Work @default.
• W3131752880 sameAs 3131752880 @default.
• W3131752880 citedByCount "0" @default.
• W3131752880 crossrefType "dissertation" @default.
• W3131752880 hasAuthorship W3131752880A5084295982 @default.
• W3131752880 hasConcept C111368507 @default.
• W3131752880 hasConcept C115343472 @default.
• W3131752880 hasConcept C115540264 @default.
• W3131752880 hasConcept C127313418 @default.
• W3131752880 hasConcept C132651083 @default.
• W3131752880 hasConcept C151730666 @default.
• W3131752880 hasConcept C18903297 @default.
• W3131752880 hasConcept C19829342 @default.
• W3131752880 hasConcept C2777073895 @default.
• W3131752880 hasConcept C2779343474 @default.
• W3131752880 hasConcept C2780982499 @default.
• W3131752880 hasConcept C505870484 @default.
• W3131752880 hasConcept C559758991 @default.
• W3131752880 hasConcept C86803240 @default.
• W3131752880 hasConcept C96305052 @default.
• W3131752880 hasConceptScore W3131752880C111368507 @default.
• W3131752880 hasConceptScore W3131752880C115343472 @default.
• W3131752880 hasConceptScore W3131752880C115540264 @default.
• W3131752880 hasConceptScore W3131752880C127313418 @default.
• W3131752880 hasConceptScore W3131752880C132651083 @default.
• W3131752880 hasConceptScore W3131752880C151730666 @default.
• W3131752880 hasConceptScore W3131752880C18903297 @default.
• W3131752880 hasConceptScore W3131752880C19829342 @default.
• W3131752880 hasConceptScore W3131752880C2777073895 @default.
• W3131752880 hasConceptScore W3131752880C2779343474 @default.
• W3131752880 hasConceptScore W3131752880C2780982499 @default.
• W3131752880 hasConceptScore W3131752880C505870484 @default.
• W3131752880 hasConceptScore W3131752880C559758991 @default.
• W3131752880 hasConceptScore W3131752880C86803240 @default.
• W3131752880 hasConceptScore W3131752880C96305052 @default.
• W3131752880 hasLocation W31317528801 @default.
• W3131752880 hasOpenAccess W3131752880 @default.
• W3131752880 hasPrimaryLocation W31317528801 @default.
• W3131752880 hasRelatedWork W2027389899 @default.
• W3131752880 hasRelatedWork W2089749289 @default.
• W3131752880 hasRelatedWork W2102866167 @default.
• W3131752880 hasRelatedWork W2146506685 @default.
• W3131752880 hasRelatedWork W2155759029 @default.
• W3131752880 hasRelatedWork W2275202130 @default.
• W3131752880 hasRelatedWork W2333598809 @default.
• W3131752880 hasRelatedWork W2404533492 @default.
• W3131752880 hasRelatedWork W2569326226 @default.
• W3131752880 hasRelatedWork W2596055429 @default.
• W3131752880 hasRelatedWork W2791808267 @default.
• W3131752880 hasRelatedWork W2794411681 @default.
• W3131752880 hasRelatedWork W2894413731 @default.
• W3131752880 hasRelatedWork W3007132235 @default.
• W3131752880 hasRelatedWork W3017300063 @default.
• W3131752880 hasRelatedWork W3122796574 @default.
• W3131752880 hasRelatedWork W3123416208 @default.
• W3131752880 hasRelatedWork W3175454961 @default.
• W3131752880 hasRelatedWork W3214301468 @default.
• W3131752880 hasRelatedWork W93369404 @default.
• W3131752880 isParatext "false" @default.
• W3131752880 isRetracted "false" @default.
• W3131752880 magId "3131752880" @default.
• W3131752880 workType "dissertation" @default.