http://lod.bco-dmo.org/id/dataset/750060
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2018-11-27
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Coral community structure at Yawazi Point and Tektite in St. John before and after five hurricanes from 1988–2017
2018-11-28
publication
2018-11-28
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2018-12-03
publication
https://doi.org/10.1575/1912/bco-dmo.750060.1
Peter J. Edmunds
California State University Northridge
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
documentDigital
Cite this dataset as: Edmunds, P. (2018) Coral community structure at Yawazi Point and Tektite in St. John before and after five hurricanes from 1988–2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). Dataset version 2018-11-28 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.750060.1 [access date]
Coral community structure at Yawazi Point and Tektite in St. John before and after five hurricanes from 1988–2017 Dataset Description: <p>The shallow reefs (≤ 14-m depth) of St. John have been subjects of time-series analyses since December 1987. Study plots first were established at 9-m depth at Yawzi Point, and at 14-m depth at Tektite, both of which provide examples of reefs dominated by <em>Orbicella annularis</em>. The initial sampling evaluated the impacts of coral bleaching in 1987, and each site consisted of three, 10-m transects placed at a constant depth, parallel to one another (and 5-m apart), and permanently marked. Ten contiguous photoquadrats (1 × 1 m) have been recorded along each transect annually, and here results from 1988 (March) and 1989 (April and October) are used to evaluate the effects of Hurricane Hugo, from 1995 (May) and 1996 (May) to evaluate the effects of Hurricanes Luis and Marilyn, and from 2017 (July and November) to evaluate the effects of Hurricanes Irma and Maria. The damage from Hurricane Hugo at Yawzi Point was extensive, and to capture this spatial scale of damage, the analysis was expanded with four, unmarked 20-m transects. In 1989, these transects were recorded using Hi-8 video (Sony Corporation), but starting in 1992, they were recorded as contiguous photoquadrats using underwater cameras. Surveys of these 20-m transects from 1989 (October), 1995 (May), 1996 (May), and 2017 (July and November) are used here to expand the spatial scale of the present analysis.</p> Acquisition Description: <p>Photoquadrats at Yawzi Point and Tektite were recorded using cameras attached to a framer that held them perpendicular to the reef. A Nikonos V (35-mm format) was used from 1987-1999, and digital cameras thereafter, with 3.3 MP resolution from 2000–2006, 6.1 MP from 2006–2010, 12.1 MP in 2011, 16.2 from 2012–2015, and 36.3 MP from 2016–present. Cameras were fitted with a strobe (Nikonos SB 105) and the images resolved objects ≥ 1-cm diameter.</p><p>The analyses at Yawzi Point and Tektite were augmented in 1992 with six additional sites that were selected using random coordinates constrained to hard substrata. This sampling focused on a habitat where boulders and cliffs of igneous rock are common, mean coral cover has remained &lt; 5%, and&nbsp;<em>Orbicella annularis&nbsp;</em>has not been common since at least 1992. Five sites are at 9-m depth, with one at 7-m depth (RS9), and they have been recorded annually. These sites serve as replicates of reefs between Cabritte Horn and White Point, and are analyzed as the pooled random sites (PRS). Results from 1995 (May) and 1996 (May) are used to evaluate the effects of Hurricanes Luis and Marilyn, and from 2017 (July and November) to evaluate the effects of Hurricanes Irma and Maria. Each site consists of a permanently marked transect at a constant depth that was 20-m long from 1992–1999 (n ~ 18 photoquadrats site<sup>-1</sup>), but was extended to 40 m in 2000 when digital photography was implemented (n ~ 40 photoquadrats site<sup>-1</sup>). Photoquadrats (0.5 × 0.5 m) were recorded at random positions along each transect (and re-randomized annually) using cameras (as described above) attached to a framer that held them perpendicular to the reef. Cameras were attached to two strobes (Nikonos SB 105), and resolved objects to at least 5-mm diameter.</p><p>Photoquadrats were analyzed by overlaying them with a grid of 200 randomly-located dots and identifying the substratum beneath each dot. Images were analyzed manually prior to 2005, from 2005–2011 using CPCe software, and from 2012 to present, using CoralNet software with manual annotations. With this approach, the abundance of each substratum type is defined by the total number of dots that occur on top of it in each image, and when expressed as a percentage of the dot population on each image, provides a measure of percentage cover (hereafter “cover”) (Menge 1976). Two resolutions were applied to the analyses, first to resolve three functional groups (FG), coral (combined cover of scleractinians), macroalgae (algae ≥ 1-cm high, mostly&nbsp;<em>Halimeda, Lobophora, Padina</em>, and&nbsp;<em>Dictyota</em>), and a combined category of crustose coralline algae, algal turf, and bare space (CTB). Second, scleractinians were resolved to the lowest taxonomic level possible, which was genera at Yawzi Point and Tektite, and a combination of species and genera at the PRS.</p><p>In addition to the hurricanes described herein, St. John also was impacted by Hurricane Lenny on 17 November 1999 (Table S1). However, underwater damage attributed to this storm was minor, probably due to the modest local wind speeds (150 km h<sup>-1</sup>), and propagation of damaging waves east and south that reduced their impacts on the southern shore of St. John. The effects of Hurricane Lenny are not considered in the present analysis. Given the vagaries of fieldwork extending over 31 Years, it was not possible to standardize the timing of sampling that took place before and after each storm episode. Sampling took place 6 weeks after Hurricane Hugo, 8 months after Hurricane Luis, and 9 weeks after Hurricane Maria. Sampling after the two most recent storms was comparable to sampling after Hurricane Hugo with regards to the delay following the storms and, therefore, probably quantified mostly coral mortality directly attributable to physical damage, and blooms of macroalgae commensurate with the growth that is possible in two autumn months. The longer delay in sampling after Hurricanes Marilyn and Luis probably resulted in measurements of coral mortality that was caused both by direct physical damage and delayed-onset disease, as well as blooms of macroalgae that can grow over 8 months extending from autumn to spring.</p>
Funding provided by National Science Foundation (NSF) Award Number: DEB-0841441 Award URL: http://www.nsf.gov/awardsearch/showAward?AWD_ID=0841441&HistoricalAwards=false
Funding provided by National Science Foundation (NSF) Award Number: DEB-0343570 Award URL: http://www.nsf.gov/awardsearch/showAward?AWD_ID=0343570&HistoricalAwards=false
Funding provided by NSF Division of Environmental Biology (NSF DEB) Award Number: DEB-1350146 Award URL: http://www.nsf.gov/awardsearch/showAward?AWD_ID=1350146
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1801335 Award URL: http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1801335
completed
Peter J. Edmunds
California State University Northridge
818-677-2502
Department of Biology 18111 Nordhoff Street
Northridge
CA
91330-8303
USA
peter.edmunds@csun.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Site
Transect_num
Year
Quadrat
Timing
Orbicella_complex
Montastraea
Agaricia
Colpophyllia
Diploria
Eusmilia
Madracis
Meandrina
Porites
Siderastrea
Mycetophyllia
Acropora
CTB
Macroalgae
Coral
cameras
theme
None, User defined
site
transect
year
sample identification
sample description
percent coverage
featureType
BCO-DMO Standard Parameters
Camera
instrument
BCO-DMO Standard Instruments
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
RUI-LTREB Renewal: Three decades of coral reef community dynamics in St. John, USVI: 2014-2019
http://coralreefs.csun.edu/
RUI-LTREB Renewal: Three decades of coral reef community dynamics in St. John, USVI: 2014-2019
<p>Describing how ecosystems like coral reefs are changing is at the forefront of efforts to evaluate the biological consequences of global climate change and ocean acidification. Coral reefs have become the poster child of these efforts. Amid concern that they could become ecologically extinct within a century, describing what has been lost, what is left, and what is at risk, is of paramount importance. This project exploits an unrivalled legacy of information beginning in 1987 to evaluate the form in which reefs will persist, and the extent to which they will be able to resist further onslaughts of environmental challenges. This long-term project continues a 27-year study of Caribbean coral reefs. The diverse data collected will allow the investigators to determine the roles of local and global disturbances in reef degradation. The data will also reveal the structure and function of reefs in a future with more human disturbances, when corals may no longer dominate tropical reefs.</p><p>The broad societal impacts of this project include advancing understanding of an ecosystem that has long been held emblematic of the beauty, diversity, and delicacy of the biological world. Proposed research will expose new generations of undergraduate and graduate students to natural history and the quantitative assessment of the ways in which our planet is changing. This training will lead to a more profound understanding of contemporary ecology at the same time that it promotes excellence in STEM careers and supports technology infrastructure in the United States. Partnerships will be established between universities and high schools to bring university faculty and students in contact with k-12 educators and their students, allow teachers to carry out research in inspiring coral reef locations, and motivate children to pursue STEM careers. Open access to decades of legacy data will stimulate further research and teaching.</p>
RUI-LTREB
largerWorkCitation
project
eng; USA
oceans
-64.723
-64.723
18.32
18.32
1988-03-01
2017-11-30
USVI
0
BCO-DMO catalogue of parameters from Coral community structure at Yawazi Point and Tektite in St. John before and after five hurricanes from 1988–2017
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/750066.rdf
Name: Site
Units: unitless
Description: Study site
http://lod.bco-dmo.org/id/dataset-parameter/750067.rdf
Name: Transect_num
Units: unitless
Description: transect number
http://lod.bco-dmo.org/id/dataset-parameter/750068.rdf
Name: Year
Units: years
Description: sampling point
http://lod.bco-dmo.org/id/dataset-parameter/750069.rdf
Name: Quadrat
Units: unitless
Description: quadrat number. The study was designed to have 10 quadrats along each of 3 lines. Missing quadrats in 1989 represent data lost; each quadrat is ~ 1 x 1 m in size
http://lod.bco-dmo.org/id/dataset-parameter/750070.rdf
Name: Timing
Units: unitless
Description: Timing inidcating before and after three episodes of major hurricanes
http://lod.bco-dmo.org/id/dataset-parameter/750071.rdf
Name: Orbicella_complex
Units: percent cover
Description: summation of O. annularis O. franksi and O. faveolata
http://lod.bco-dmo.org/id/dataset-parameter/750072.rdf
Name: Montastraea
Units: percent cover
Description: M. cavernosa percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750073.rdf
Name: Agaricia
Units: percent cover
Description: Agaricia percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750074.rdf
Name: Colpophyllia
Units: percent cover
Description: Colpophyllia percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750075.rdf
Name: Diploria
Units: percent cover
Description: all species in this genus - historic data do not reflect splitting of the genus between Diploria and Pseudodiploria percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750076.rdf
Name: Eusmilia
Units: percent cover
Description: Eusmilia percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750077.rdf
Name: Madracis
Units: percent cover
Description: Madracis percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750078.rdf
Name: Meandrina
Units: percent cover
Description: Meandrina percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750079.rdf
Name: Porites
Units: percent cover
Description: Porites percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750080.rdf
Name: Siderastrea
Units: percent cover
Description: Siderastrea percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750081.rdf
Name: Mycetophyllia
Units: percent cover
Description: Mycetophyllia percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750082.rdf
Name: Acropora
Units: percent cover
Description: Acropora percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750083.rdf
Name: CTB
Units: percent cover
Description: combined category of crustose coralline algae; algal turf; and bare space percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750084.rdf
Name: Macroalgae
Units: percent cover
Description: summation of macroalgae mostly in the genera Halimeda; Lobophora; Dictyota percent cover
http://lod.bco-dmo.org/id/dataset-parameter/750085.rdf
Name: Coral
Units: percent cover
Description: combined coral cover
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
https://www.bco-dmo.org/dataset/750060/data/download
download
onLine
dataset
<p>Photoquadrats at Yawzi Point and Tektite were recorded using cameras attached to a framer that held them perpendicular to the reef. A Nikonos V (35-mm format) was used from 1987-1999, and digital cameras thereafter, with 3.3 MP resolution from 2000–2006, 6.1 MP from 2006–2010, 12.1 MP in 2011, 16.2 from 2012–2015, and 36.3 MP from 2016–present. Cameras were fitted with a strobe (Nikonos SB 105) and the images resolved objects ≥ 1-cm diameter.</p><p>The analyses at Yawzi Point and Tektite were augmented in 1992 with six additional sites that were selected using random coordinates constrained to hard substrata. This sampling focused on a habitat where boulders and cliffs of igneous rock are common, mean coral cover has remained &lt; 5%, and&nbsp;<em>Orbicella annularis&nbsp;</em>has not been common since at least 1992. Five sites are at 9-m depth, with one at 7-m depth (RS9), and they have been recorded annually. These sites serve as replicates of reefs between Cabritte Horn and White Point, and are analyzed as the pooled random sites (PRS). Results from 1995 (May) and 1996 (May) are used to evaluate the effects of Hurricanes Luis and Marilyn, and from 2017 (July and November) to evaluate the effects of Hurricanes Irma and Maria. Each site consists of a permanently marked transect at a constant depth that was 20-m long from 1992–1999 (n ~ 18 photoquadrats site<sup>-1</sup>), but was extended to 40 m in 2000 when digital photography was implemented (n ~ 40 photoquadrats site<sup>-1</sup>). Photoquadrats (0.5 × 0.5 m) were recorded at random positions along each transect (and re-randomized annually) using cameras (as described above) attached to a framer that held them perpendicular to the reef. Cameras were attached to two strobes (Nikonos SB 105), and resolved objects to at least 5-mm diameter.</p><p>Photoquadrats were analyzed by overlaying them with a grid of 200 randomly-located dots and identifying the substratum beneath each dot. Images were analyzed manually prior to 2005, from 2005–2011 using CPCe software, and from 2012 to present, using CoralNet software with manual annotations. With this approach, the abundance of each substratum type is defined by the total number of dots that occur on top of it in each image, and when expressed as a percentage of the dot population on each image, provides a measure of percentage cover (hereafter “cover”) (Menge 1976). Two resolutions were applied to the analyses, first to resolve three functional groups (FG), coral (combined cover of scleractinians), macroalgae (algae ≥ 1-cm high, mostly&nbsp;<em>Halimeda, Lobophora, Padina</em>, and&nbsp;<em>Dictyota</em>), and a combined category of crustose coralline algae, algal turf, and bare space (CTB). Second, scleractinians were resolved to the lowest taxonomic level possible, which was genera at Yawzi Point and Tektite, and a combination of species and genera at the PRS.</p><p>In addition to the hurricanes described herein, St. John also was impacted by Hurricane Lenny on 17 November 1999 (Table S1). However, underwater damage attributed to this storm was minor, probably due to the modest local wind speeds (150 km h<sup>-1</sup>), and propagation of damaging waves east and south that reduced their impacts on the southern shore of St. John. The effects of Hurricane Lenny are not considered in the present analysis. Given the vagaries of fieldwork extending over 31 Years, it was not possible to standardize the timing of sampling that took place before and after each storm episode. Sampling took place 6 weeks after Hurricane Hugo, 8 months after Hurricane Luis, and 9 weeks after Hurricane Maria. Sampling after the two most recent storms was comparable to sampling after Hurricane Hugo with regards to the delay following the storms and, therefore, probably quantified mostly coral mortality directly attributable to physical damage, and blooms of macroalgae commensurate with the growth that is possible in two autumn months. The longer delay in sampling after Hurricanes Marilyn and Luis probably resulted in measurements of coral mortality that was caused both by direct physical damage and delayed-onset disease, as well as blooms of macroalgae that can grow over 8 months extending from autumn to spring.</p>
Specified by the Principal Investigator(s)
<p>Statistical approach.</p><p>To test for changes over time in the response of benthic communities to hurricanes, the three FG were tested in separate univariate models (in which the dependent variables were cover of coral, macroalgae, or CTB) for the effects of hurricanes (the fixed effect). The effects of Hurricane Hugo were evaluated relative to FG abundance in April 1989, and Hurricanes Luis and Marilyn, and Irma and Maria were each considered single storm episodes because they occurred in quick succession. Percentage cover was arcsine transformed, and the assumptions of normality and equal variance explored through graphical analysis of residuals. Planned contrasts were used to compare cover before and after each storm episode. Changes in absolute and relative coral cover along the four 20-m transects at Yawzi Point were compared between storm episodes using a Mann Whitney U-test. Multivariate community structure was compared before and after storms using non-metric multidimensional scale (nMDS) and Bray Curtis dissimilarities calculated for scleractinian abundance by lowest taxonomic resolution, and for FG. For PRS (both coral and FG), and FG at Yawzi Point and Tektite, data were square-root transformed. For coral cover at Yawzi Point and Tektite, pre-Hurricane Hugo data came from March 1988, and all were standardized and then square root transformed to address the dominance of the communities by Orbicella annularis. Univariate statistical analyses were completed using Systat 13, and multivariate statistics using PRIMER version 6.&nbsp;</p><p>BCO-DMO Processing Notes:</p><ul><li>added conventional header with dataset name, PI name, version date</li><li>modified parameter names to conform with BCO-DMO naming conventions</li><li>combined Yawzi Point and Tektite data sheets into one dataset.</li></ul>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
cameras
cameras
PI Supplied Instrument Name: cameras PI Supplied Instrument Description:Photoquadrats at Yawzi Point and Tektite were recorded using cameras attached to a framer that held them perpendicular to the reef. Instrument Name: Camera Instrument Short Name:camera Instrument Description: A camera (could be a 35 mm type), most often used to photograph marine mammals or birds. All types of photographic equipment that are hand-held or part of laboratory apparatus including stills, video, film and digital systems. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/311/