Data

Chemical microenvironment within complex multispecies macroalgae assemblages

University of Tasmania, Australia
Layton, Cayne ; Cameron, Matthew ; Shelamoff, Victor ; Fernández, Pamela ; Britton, Damon ; Hurd, Catriona ; Wright, Jeffrey, Dr ; Johnson, Craig, Prof.
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25959/5c521ec4bea36&rft.title=Chemical microenvironment within complex multispecies macroalgae assemblages&rft.identifier=10.25959/5c521ec4bea36&rft.description=-- Layton et al. Chemical microenvironments within macroalgal assemblages: implications for the inhibition of kelp recruitment by turf algae. Limnology & Oceanography. DOI:10.1002/lno.11138 -- Kelp forests around the world are under increasing pressure from anthropogenic stressors. A widespread consequence is that in many places, complex and highly productive kelp habitats have been replaced by structurally simple and less productive turf algae habitats. Turf algae habitats resist re-establishment of kelp via recruitment inhibition; however little is known about the specific mechanisms involved. One potential factor is the chemical environment within the turf algae and into which kelp propagules settle and develop. Using laboratory trials, we illustrate that the chemical microenvironment (O2 concentration and pH) 0.0–50 mm above the benthos within four multispecies macroalgal assemblages (including a turf-sediment assemblage and an Ecklonia radiata kelp-dominated assemblage) are characterised by elevated O2 and pH relative to the surrounding seawater. Notably however, O2 and pH were significantly higher within turf-sediment assemblages than in kelp-dominated assemblages, and at levels that have previously been demonstrated to impair the photosynthetic or physiological capacity of kelp propagules. Field observations of the experimental assemblages confirmed that recruitment of kelp was significantly lower into treatments with dense turf algae than in the kelp-dominated assemblages. We demonstrate differences between the chemical microenvironments of kelp and turf algae assemblages that correlate with differences in kelp recruitment, highlighting how degradation of kelp habitats might result in the persistence of turf algae habitats and the localised absence of kelp.Maintenance and Update Frequency: notPlannedStatement: see associated paper -- Layton et al. 2019, Chemical microenvironments within macroalgal assemblages: implications for the inhibition of kelp recruitment by turf algae, Limnology & Oceanography, DOI:10.1002/lno.11138&rft.creator=Layton, Cayne &rft.creator=Cameron, Matthew &rft.creator=Shelamoff, Victor &rft.creator=Fernández, Pamela &rft.creator=Britton, Damon &rft.creator=Hurd, Catriona &rft.creator=Wright, Jeffrey, Dr &rft.creator=Johnson, Craig, Prof. &rft.date=2019&rft.coverage=westlimit=147.93; southlimit=-43.15; eastlimit=147.97; northlimit=-43.1&rft.coverage=westlimit=147.93; southlimit=-43.15; eastlimit=147.97; northlimit=-43.1&rft.coverage=uplimit=14; downlimit=14&rft.coverage=uplimit=14; downlimit=14&rft_rights= http://creativecommons.org/licenses/by/4.0/&rft_rights=http://i.creativecommons.org/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution 4.0 International License&rft_rights=http://creativecommons.org/international/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=Cite data as: Layton, C., Johnson, C.R., Wright, J.T., Cameron, M., Shemaloff, V., Fernández, P., Britton, D., Hurd, C. (2019). Chemical microenvironment within complex multispecies macroalgae assemblages. Institute for Marine and Antarctic Studies, University of Tasmania. doi:10.25959/5c521ec4bea36&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0&rft_subject=biota&rft_subject=Temperate Reef&rft_subject=EARTH SCIENCE | BIOSPHERE | ECOLOGICAL DYNAMICS | COMMUNITY DYNAMICS&rft_subject=EARTH SCIENCE | BIOSPHERE | ECOSYSTEMS | MARINE ECOSYSTEMS | COASTAL | KELP FOREST&rft_subject=EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PLANTS | MACROALGAE (SEAWEEDS) | RED ALGAE&rft_subject=EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PLANTS | MACROALGAE (SEAWEEDS) | BROWN ALGAE&rft_subject=EARTH SCIENCE | BIOLOGICAL CLASSIFICATION | PLANTS | MACROALGAE (SEAWEEDS) | GREEN ALGAE&rft_subject=EARTH SCIENCE | OCEANS | MARINE SEDIMENTS | SEDIMENT CHEMISTRY&rft_subject=EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | CARBON DIOXIDE&rft_subject=EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | OXYGEN&rft_subject=EARTH SCIENCE | OCEANS | OCEAN CHEMISTRY | PH&rft_subject=EARTH SCIENCE | BIOSPHERE | ECOLOGICAL DYNAMICS | COMMUNITY DYNAMICS | SPECIES RECRUITMENT&rft_subject=EARTH SCIENCE | BIOSPHERE | ECOLOGICAL DYNAMICS | ECOSYSTEM FUNCTIONS | PHOTOSYNTHESIS&rft_subject=Phycology (incl. Marine Grasses)&rft_subject=BIOLOGICAL SCIENCES&rft_subject=PLANT BIOLOGY&rft_subject=Marine and Estuarine Ecology (incl. Marine Ichthyology)&rft_subject=ECOLOGY&rft_subject=Concentration of oxygen {O2} per unit volume of the water body&rft_subject=pH (total scale) of the water body&rft_subject=depth of turf-sediment matrix&rft_subject=Recruitment of Stage 1 juvenile kelp per paver&rft_subject=macroalgae biomass by species name&rft_subject=water flow within flume&rft.type=dataset&rft.language=English Access the data

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Cite data as: Layton, C., Johnson, C.R., Wright, J.T., Cameron, M., Shemaloff, V., Fernández, P., Britton, D., Hurd, C. (2019). Chemical microenvironment within complex multispecies macroalgae assemblages. Institute for Marine and Antarctic Studies, University of Tasmania. doi:10.25959/5c521ec4bea36

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Brief description

-- Layton et al. Chemical microenvironments within macroalgal assemblages: implications for the inhibition of kelp recruitment by turf algae. Limnology & Oceanography. DOI:10.1002/lno.11138 -- Kelp forests around the world are under increasing pressure from anthropogenic stressors. A widespread consequence is that in many places, complex and highly productive kelp habitats have been replaced by structurally simple and less productive turf algae habitats. Turf algae habitats resist re-establishment of kelp via recruitment inhibition; however little is known about the specific mechanisms involved. One potential factor is the chemical environment within the turf algae and into which kelp propagules settle and develop. Using laboratory trials, we illustrate that the chemical microenvironment (O2 concentration and pH) 0.0–50 mm above the benthos within four multispecies macroalgal assemblages (including a turf-sediment assemblage and an Ecklonia radiata kelp-dominated assemblage) are characterised by elevated O2 and pH relative to the surrounding seawater. Notably however, O2 and pH were significantly higher within turf-sediment assemblages than in kelp-dominated assemblages, and at levels that have previously been demonstrated to impair the photosynthetic or physiological capacity of kelp propagules. Field observations of the experimental assemblages confirmed that recruitment of kelp was significantly lower into treatments with dense turf algae than in the kelp-dominated assemblages. We demonstrate differences between the chemical microenvironments of kelp and turf algae assemblages that correlate with differences in kelp recruitment, highlighting how degradation of kelp habitats might result in the persistence of turf algae habitats and the localised absence of kelp.

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Maintenance and Update Frequency: notPlanned
Statement: see associated paper -- Layton et al. 2019, Chemical microenvironments within macroalgal assemblages: implications for the inhibition of kelp recruitment by turf algae, Limnology & Oceanography, DOI:10.1002/lno.11138

Created: 2019-01-22

Data time period: 2015-06-15 to 2016-02-28

This dataset is part of a larger collection

147.97,-43.1 147.97,-43.15 147.93,-43.15 147.93,-43.1 147.97,-43.1

147.95,-43.125

text: westlimit=147.93; southlimit=-43.15; eastlimit=147.97; northlimit=-43.1

text: uplimit=14; downlimit=14

Other Information
(DATA ACCESS - chemical microenvironment within macroalgal communities [direct download])

uri : https://data.imas.utas.edu.au/attachments/ffb04265-eb2a-4eea-943f-ef4cd2dd9531/LAYTON_microprobe_dataset.xlsx

Identifiers