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19 results for “Fringing Reefs”
MCR LTER: Coral Reef: pH Time Series from Bottom-mounted SeaFET on the Fringing Reef, January-February 2011
Bottom-mounted instrumentation (SeaFET, Seabird thermistors) sampled for 6 weeks on the fringing reef of Moorea Island, French Polynesia at site LTER Fringe 1. Sampling began in January 2011. The instruments were secured to a cement piling at 3.3 meters depth and 0.7 meters above the sandy bottom. The SeaFET recorded voltages from a thermistor and pH electrodes at a 10-minute sampling interval. Discrete seawater samples were collected using a Niskin bottle during the deployment; pH, salinity, and total alkalinity of this sample were measured to calculate seawater pH (total scale) from raw SeaFET data as well as other carbonate chemistry parameters. The Seabird thermistors provided measures of seawater temperature at 10-minute sampling intervals. These data are published in Rivest, E.B. and G.E. Hofmann. 2014. Responses of the metabolism of the larvae of Pocillopora damicornis to ocean acidification and warming. PLoS ONE DOI:10.1371/journal.pone.0096172
MCR LTER: Coral Reef Resilience: Juvenile Parrotfish Habitat Associations at North Shore Fringe and Backreef in March 2011
These data describe habitat associations of juvenile parrotfish (Scaridae) encountered during systematic searches at LTER 1 and LTER 2 fringing reef and back reef sites during March 2011. At each site SCUBA divers or snorkelers identified, counted, and estimated the sizes of juvenile parrotfish and recorded the microhabitat that each individual or group of individuals was associated with on two 100 m x 10 m wide transects (n = 8 transects total). Upon encountering a juvenile or group of juveniles, the surveyor recorded the microhabitat type that fishes were first seen to be closest to. They also closely observed the behavior of fishes to see if they were utilizing a particular microhabitat as shelter, and if so this was also recorded. Several groups of fishes first observed to be grazing on hard substrate or on macroalgae quickly retreated into the nearby coral Porites rus when approached. Hence for these individuals we considered the initial habitat they were associated with (e.g., hard substrate or macroalgae) to be their primary microhabitat, but also noted that they were associated with Porites rus for shelter.
MCR LTER: Coral Reef: Water Column: Particle sedimentation on the Forereef, Back Reef and Fringing Reef
This data package contains measurements of the sedimentation rate of particulate matter to the seafloor on the forereef, backreef and fringing reef of the north shore of Moorea, French Polynesia, during 2 to 4 seasons per year from August 2005 to January 2011. Measurements include estimates of the accumulation rate of particulate organic carbon (POC), particulate organic nitrogen (PON), and dry mass. Samples were collected with 2 different types of sediment traps. From August, 2005 to January 2008 samples were collected using plastic door matting placed in plastic trays 1 cm deep and 195.5 cm2 in area. From January, 2008 to January, 2011 samples were collected in plastic tubes 5.2 cm inside diameter and 17.5 cm high (21.26 cm2). During each sampling period 3 replicate traps were placed at random on the seafloor and retrieved approximately 24 hours later. See caveats to data interpretation in methods discussion.
MCR LTER: Coral Reef: Seawater pH, Temperature and Depth Time Series from Bottom-mounted Sensors on the Fringing Reef, January-March 2012
Bottom-mounted instrumentation (SeaFET, Seabird thermisters, Hobo water level data loggers) sampled for 8 weeks on the fringing reef of Moorea Island, French Polynesia at site LTER Fringe 1. Sampling began in January 2012. The instruments were secured to a cement piling at 3.3 meters depth and 0.7 meters above the sandy bottom. The SeaFET recorded voltages from a thermistor and pH electrodes at a 10-minute sampling interval. Discrete seawater samples were collected using a Niskin bottle during the deployment; pH, salinity, and total alkalinity of this sample were measured to calculate seawater pH (total scale) from raw SeaFET data as well as other carbonate chemistry parameters. Adjacent to the SeaFET were two thermistors and two HOBO® water level data loggers, synchronized with the SeaFET to simultaneously record temperature and depth.
Taiwan Coral Reef: Seawater pH, Temperature and Depth Time Series from Bottom-mounted Sensors on the Fringing Reef in Nanwan Bay, May-July 2012
Bottom-mounted instrumentation (SeaFET, Seabird conductivity/temperature sensor, Hobo water level data loggers) sampled for 7 weeks on the Hobihu fringing reef in Nanwan Bay, Taiwan. Sampling began in May 2012. The instruments were secured to anchored fencing stakes at 4 meters depth and 0.6 meters above the sandy bottom. The SeaFET recorded voltages from a thermistor and pH electrodes at a 10-minute sampling interval. Discrete seawater samples were collected using a Niskin bottle during the deployment; pH, salinity, and total alkalinity of this sample were measured to calculate seawater pH (total scale) from raw SeaFET data as well as other carbonate chemistry parameters. Adjacent to the SeaFET were a Seabird sensor and two HOBO® water level data loggers, synchronized with the SeaFET to simultaneously record conductivity, temperature and depth.
The effects of light intensity and flow speed on biogeochemical variability within a fringing coral reef in Onna-son, Okinawa, Japan
<p>Global warming and ocean acidification are driving gradual declines in seawater dissolved oxygen concentrations and pH. Predicting how these changes will affect shallow, near-shore environments including coral reefs is challenging due to high natural variability on both spatial (10 m to km) and temporal (diel to seasonal) scales. To make predictions, it is first necessary to identify and quantify the drivers of this natural variability. While significant efforts have been devoted to characterising the influence from metabolic processes on coral reef seawater chemistry, less attention has been devoted to physical processes such as flow speed and light intensity. Here, we measured seawater flow, photosynthetically active radiation (PAR), pH, and dissolved oxygen (DO) at three reef habitats (reef flat, lagoon, and outflow channel) in a fringing coral reef system in Okinawa, Japan for a duration of 3 weeks in October of 2019. During the study, circulation was primarily wave-driven with mean flow speeds ranging from 14-26 cm/s. Flow direction became increasingly consistent at higher flow speeds, which traced visual patterns in the benthos observed from satellite imagery. Multiple linear regression models of daytime changes in pH and DO versus daily mean flow speed and PAR described 25-74% of the observed variability across all sites while at night, flow speed alone accounted for 35-69% of the observed variability. The results demonstrate that flow speed, trajectory, and PAR play important and variable roles in controlling biogeochemical variability within coral reefs and need to be considered in assessing their vulnerability to global climate change.</p>
Data from: Characterizing fish habitat use of fringing oyster reefs using acoustic imaging
<p>Data and scripts associated with the paper "Characterizing fish habitat use of fringing oyster reefs using acoustic imaging"</p>
Response of a fringing reef coastline to the direct impact of a tropical cyclone
<p>The data contains observations from the impact of Tropical Cyclone Olwyn to northwest Western Australia in March 2015. A cross-shore array of 5 pressure sensors were deployed to measure wave heights and water levels at Point Jurabi (~5 km north of Tantabiddi), Ningaloo Reef; beach morphology was measured pre- and post-cyclone using RTK-DGPS; and a two-way coupled model was developed using Delft3D and SWAN. </p> <p> </p> <p>The data sets contains the raw pressure sensor measurements (.rsk), beach morphology grids (.txt), and model input/output files. Please see the 'Cuttler_etal_2017_Metadata.pdf', 'ReadMe.txt' file or contact michael.cuttler@uwa.edu.au for further information</p>
The effects of light intensity and flow speed on biogeochemical variability within a fringing coral reef in Onna-son, Okinawa, Japan
Open the record for dataset details and reuse information.
Moorea Coral Reef site, station Fringing Reef habitat, study of secchi disk visibility (horizontal), disk at 7 meter depth in units of meter on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Moorea Coral Reef (MCR) contains secchi disk visibility (horizontal), disk at 7 meter depth measurements in meter units and were aggregated to a yearly timescale.
Increased sediment load destabilize algal turf at two different fringing reefs; Evaluating responses across a stress gradient, Moorea, French Polynesia, 2016
Seven reefs in Moorea French Polynesia were examined for sediment and turf characteristics to establish a baseline for naturally occurring proportions of sediment within the turf matrix. At each of the seven sites turf filament heights and sediment depths within the turf matrix were measured using a galvanized mesh measuring device calibrated by 1mm increments. All surveys were conducted between 2-3m in depth between April-May of 2016. We then conducted a two-factor experiment where sediment depth was manipulated at two sites surveyed with strong differences in turf communities (Maharepa and Gump). Our experiment ran for 30 days, with sediment treatments maintained every four days.
Environmental and bacterial parameters in Luhuitou fringing reef over a seasonal cycle
<p>In coral reefs, heterotrophic bacteria play an imperative role in driving material cycle and energy flow and sustaining coral health.</p>
Stronger thermal response of viral life strategy and lytic activity in a fringing coral reef than in oligotrophic oceans
<p>data_Stronger thermal response of viral life strategy and lytic activity in a fringing coral reef than in oligotrophic oceans</p>
Figure 6 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida
Figure 6. Mycale (Aegogropila) rubra sp. nov. (holotype, MNRJ 16270). (A) Mycalostyle; (B) detail of mycalostyle base; (C) anisochelae I in oblique side view (top) and oblique face view (bottom); (D) anisochelae II (left, face view; middle, face view of young spicule; right, face view); (E) anisochelae III (side view); (F) sigma; (G) toxa I (both halves slightly overlaid); (H) toxa II. Scale bars: A, C–H, 20 µm; B, 50 µm.
Figure 5 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida
Figure 5. Mycale (Aegogropila) rubra sp. nov. (holotype, MNRJ 16270). (A) Tangential section of ectosomal skeleton; (B, C) detail of ectosome showing abundant microscleres (a1, anisochelae–I; a2, anisochelae–II; a3, anisochelae–III; r, rosette; s1, sigmas–I; s2, sigmas–II; t, toxas). Scale bars: A, 100 µm; B, C, 50 µm.
Figure 4 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida
Figure 4. Rhabderemia meirimensis sp. nov. (holotype, MNRJ 14275). (A) Ectosomal skeleton; (B) choanosomal skeleton; (C, D) rhabdostyles I; (E) rhabdostyle II; (F) rhabdostyle III; (G) distally microspined sigma; (H) details of microspined terminations of sigmas; (I, J) spirosigmas. Scale bars: A, B, 200 µm; C–F, 100 µm; G, 20 µm; H–J, 5 µm.
Figure 2 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida
Figure 2. In situ photographs of the new species described in this study. (A) Plakina coerulea sp. nov. (holotype, MNRJ 14295 at Piscina dos Amores); (B) Rhabderemia meirimensis sp. nov. (holotype, MNRJ 14275 at Ponta do Meirim); (C) Mycale (Aegogropila) rubra sp. nov. (paratype, MNRJ 14050 at Praia do Francês). Scale bars: 1 cm.
Figure 1 in Three new intertidal sponges (Porifera: Demospongiae) from Brazil's fringing urban reefs (Maceió, Alagoas, Brazil), and support for Rhabderemia's exclusion from Poecilosclerida
Figure 1. Map showing South America and Brazil, with Alagoas state in black (upper left), an expanded Alagoas state with Maceió city in black (upper middle), and the collecting localities off Maceió ((A) Piscina dos Amores; (B) Riacho Doce; (C) Ponta do Meirim; (D) Ponta do Prego).
Hydro and sediment dyanamics on a laboratory scaled fringing reef: morphology simulations
<p>A laboratory experiment was conducted to investigate the dynamics of cross-shore sediment transport across a<br> fringing coral reef. The aim was to quantify how a highly bimodal spectrum of high-frequency (sea-swell) and<br> low-frequency (infragravity and seiching) waves that is typically present on coral reef flats, influences the<br> various sediment transport mechanisms. The experiments were conducted in a 55 m wave flume, using a 1:15<br> scale fringing reefmodel that had a 1:5 forereef slope, a 14 m long reef flat, and a 1:12 sloping beach. The initial<br> 7 m of reef flat had a fixed bed, whereas the back 7 m of the reef and the beach had a moveable sandy bed. Four<br> seven-hour irregular wave cases were conducted both with and without bottom roughness elements (schematically<br> representing bottom friction by coral roughness), as well as for both low and high still water levels.</p> <p>More information about this experiment is available in the methods of the associated publication (http://doi.org/10.1016/j.coastaleng.2015.01.005).</p>
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