Data

WAMSI 2 - Dredging Node - Project 5.5.3 - Defining thresholds and indicators of primary producers - Seagrass pressure-response relationships - Experiment 3

Australian Ocean Data Network
Kendrick, Gary, Dr (principalInvestigator) Lavery, Paul, Dr (collaborator, Point of contact) McMahon, Kathryn, Dr (collaborator) Statton, John, Dr (principalInvestigator)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/aa428350-5c25-4437-93b6-ecb013532b56&rft.title=WAMSI 2 - Dredging Node - Project 5.5.3 - Defining thresholds and indicators of primary producers - Seagrass pressure-response relationships - Experiment 3&rft.identifier=aa428350-5c25-4437-93b6-ecb013532b56&rft.publisher=Australian Ocean Data Network&rft.description=Objectives of Project 5.5 are to: (1) determining the pressure:response relationships that relate the effects of dredging-generated sediments on tropical primary producers, (2) examine the pathways, rates and timeframes of recovery from impacts and; (3) identify and examine the effects of key environmental variables on the pressure:response relationships and recovery. Specifically *Experiment 3* will be studying Effect of burial by different sediment types on seagrasses (Laboratory and Field Experiment) Cymodocea serrulata and Halodule uninervis studied. There are the following worksheets in the Experiment 3 spreadsheet: - Biomass_impact - Biomass_recovery - Biomass all species_impact - Biomass all species_recovery - Growth & Morphology_impact - Growth & Morphology_recovery - Carbohydrates - Nutients_impact - Nutrients_recovery - Carbohydrates_impact - Carbohydrates_recoveryStatement: The DSP indicated that an area of uncertainty was whether the type of sediment {organic v inorganic and mean grain size) affected the response of plants to sediment deposition. Organic sediment are known to have a greater impact on corals than inorganic sediment, and it is possible that grain size and organic content could alter the effects of sediment deposition on sediment biogeochemistry, which in turn could affect seagrasses. To test for an effect of sediment type, additional laboratory and field experiment will be conducted in which the sediment composition is manipulated. Laboratory treatments will be established as in Experiment 2 and subjected to the following treatments: Burial (0.2, 2 cm and 4 cm); sediment Type (fine inorganic, coarse inorganic and organic), and for 3 durations (2, 4 and 8 weeks plus 4 weeks recovery). Grain sizes and durations will be refined following input from Theme 2/3. Four replicate plots of each treatment will be established and the variable indicated in Table I measured at each sampling point. In the laboratory, sediment will be added to treatments as suspended sediment delivered in the water stream feeding the tanks. Feed will be provided at a rate that produces increases in sediment depth comparable to those observed in field situation (as determined in Project 5.1 and from Themes 2 and 3). This will provide loading of sediment to the plant canopy (e.g. material deposited on leaf surfaces) as well as the sediment surface, more representative of a dredging scenario. An analogous experiment will be conducted in the field to validate the laboratory findings under conditions where sediment re-suspension and other factors may alter the plant responses. In this case, sediment will be added in either one, or a small number of sequential, loading events. Otherwise, the field experiment will follow the same design as that in Experiment 2, and varying the composition of sediment (as above). Variable to be measured are indicated in thumbnail image&rft.creator=Anonymous&rft.date=2017&rft.coverage=westlimit=115; southlimit=-21; eastlimit=126; northlimit=-11&rft.coverage=westlimit=115; southlimit=-21; eastlimit=126; northlimit=-11&rft_rights=Creative Commons Attribution-Noncommercial-Share Alike 2.5 Australia License http://creativecommons.org/licenses/by-nc-sa/2.5/au/&rft_rights=*All users must acknowledge the source of the material with the acknowledgment*: Data sourced from Western Australian Marine Science Institution (WAMSI) project funded by Western Australian State Government and research partners and carried out by <insert authors> from <insert organisations>&rft_rights=*Suggested attribution for use in citation*: [author(s)], Western Australian Marine Science Institution (WAMSI), [author organisation(s)], [year-of-data-download], [title], [data-access-URL], data accessed (YYYY-MM-DD).&rft_rights=*Disclaimer*: WAMSI and its Partners data, products and services are provided as is and WAMSI and its Partners do not warrant their fitness for a particular purpose. WAMSI and its Partners have made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. WAMSI and its Partners make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, WAMSI and its Partners exclude all liability to any person arising directly or indirectly from the use of the data, products and services.&rft_subject=biota&rft_subject=environment&rft_subject=oceans&rft_subject=SEDIMENT TRANSPORT&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=COASTAL PROCESSES&rft_subject=BENTHIC HABITAT&rft_subject=BIOSPHERE&rft_subject=AQUATIC ECOSYSTEMS&rft_subject=Oceans | Marine Biology | Marine Plants&rft_subject=TURBIDITY&rft_subject=MARINE SEDIMENTS&rft_subject=LIGHT TRANSMISSION&rft_subject=TERRESTRIAL HYDROSPHERE&rft_subject=WATER QUALITY/WATER CHEMISTRY&rft.type=dataset&rft.language=English Access the data
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Creative Commons Attribution-Noncommercial-Share Alike 2.5 Australia License
http://creativecommons.org/licenses/by-nc-sa/2.5/au/

*All users must acknowledge the source of the material with the acknowledgment*: "Data sourced from Western Australian Marine Science Institution (WAMSI) project funded by Western Australian State Government and research partners and carried out by from "

*Suggested attribution for use in citation*:
"[author(s)], Western Australian Marine Science Institution (WAMSI), [author organisation(s)], [year-of-data-download], [title], [data-access-URL], data accessed (YYYY-MM-DD)".

*Disclaimer*:
WAMSI and its Partners data, products and services are provided "as is" and WAMSI and its Partners do not warrant their fitness for a particular purpose. WAMSI and its Partners have made every reasonable effort to ensure high quality of the data, products and services, to the extent permitted by law the data, products and services are provided without any warranties of any kind, either expressed or implied, including without limitation any implied warranties of title, merchantability, and fitness for a particular purpose or non-infringement. WAMSI and its Partners make no representation or warranty that the data, products and services are accurate, complete, reliable or current. To the extent permitted by law, WAMSI and its Partners exclude all liability to any person arising directly or indirectly from the use of the data, products and services.

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Brief description

Objectives of Project 5.5 are to: (1) determining the pressure:response relationships that relate the effects of dredging-generated sediments on tropical primary producers, (2) examine the pathways, rates and timeframes of recovery from impacts and; (3) identify and examine the effects of key environmental variables on the pressure:response relationships and recovery. Specifically *Experiment 3* will be studying "Effect of burial by different sediment types on seagrasses (Laboratory and Field Experiment)" Cymodocea serrulata and Halodule uninervis studied. There are the following worksheets in the Experiment 3 spreadsheet: - Biomass_impact - Biomass_recovery - Biomass all species_impact - Biomass all species_recovery - Growth & Morphology_impact - Growth & Morphology_recovery - Carbohydrates - Nutients_impact - Nutrients_recovery - Carbohydrates_impact - Carbohydrates_recovery

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Statement: The DSP indicated that an area of uncertainty was whether the type of sediment {organic v inorganic and mean grain size) affected the response of plants to sediment deposition. Organic sediment are known to have a greater impact on corals than inorganic sediment, and it is possible that grain size and organic content could alter the effects of sediment deposition on sediment biogeochemistry, which in turn could affect seagrasses. To test for an effect of sediment type, additional laboratory and field experiment will be conducted in which the sediment composition is manipulated. Laboratory treatments will be established as in Experiment 2 and subjected to the following treatments: Burial (0.2, 2 cm and 4 cm); sediment Type (fine inorganic, coarse inorganic and organic), and for 3 durations (2, 4 and 8 weeks plus 4 weeks recovery). Grain sizes and durations will be refined following input from Theme 2/3. Four replicate plots of each treatment will be established and the variable indicated in Table I measured at each sampling point. In the laboratory, sediment will be added to treatments as suspended sediment delivered in the water stream feeding the tanks. Feed will be provided at a rate that produces increases in sediment depth comparable to those observed in field situation (as determined in Project 5.1 and from Themes 2 and 3). This will provide loading of sediment to the plant canopy (e.g. material deposited on leaf surfaces) as well as the sediment surface, more representative of a dredging scenario. An analogous experiment will be conducted in the field to validate the laboratory findings under conditions where sediment re-suspension and other factors may alter the plant responses. In this case, sediment will be added in either one, or a small number of sequential, loading events. Otherwise, the field experiment will follow the same design as that in Experiment 2, and varying the composition of sediment (as above). Variable to be measured are indicated in thumbnail image

Notes

Credit
Report Citation: Statton J, McMahon KM, McCallum R, Kendrick GA, Lavery PS (2016). Response and recovery of a mixed tropical seagrass assemblage to variation in the frequency and magnitude of light deprivation. Final Report for WAMSI 5.5.3 of the WAMSI Dredging Science Node.

Modified: 05 04 2017

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126,-11 126,-21 115,-21 115,-11 126,-11

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text: westlimit=115; southlimit=-21; eastlimit=126; northlimit=-11

Subjects
AQUATIC ECOSYSTEMS | Benthic Habitat | BIOSPHERE | COASTAL PROCESSES | EARTH SCIENCE | Light Transmission | MARINE SEDIMENTS | OCEANS | Oceans | Marine Biology | Marine Plants | Sediment Transport | TERRESTRIAL HYDROSPHERE | Turbidity | WATER QUALITY/WATER CHEMISTRY | biota | environment | oceans |

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