http://lod.bco-dmo.org/id/dataset/653754
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
2016-08-10
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
The number of lionfish that moved between reefs and seagrass in Eleuthera, Bahamas from July to August in 2012
2016-08-10
publication
2016-08-10
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-05-22
publication
https://doi.org/10.1575/1912/bco-dmo.653754.1
Mark Hixon
University of Hawaii
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
Cite this dataset as: Hixon, M. (2016) The number of lionfish that moved between reefs and seagrass in Eleuthera, Bahamas from July to August in 2012. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2016-08-10 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.653754.1 [access date]
The number of lionfish that moved between reefs and seagrass. Dataset Description: <p>This was an observational field study on natural patch reefs with varying lionfish densities to determine if lionfish behavior and movements change at different local lionfish and prey fish densities. &nbsp;Each reef was visited at three times of day: dawn, midday, and dusk, and two focal lionfish were observed during each visit at each reef. Behaviors of all lionfish were recorded the moment they were first sighted ("Initial behaviors").&nbsp;One or two focal lionfish were observed for 10 minute intervals and all activity was recorded ("Focal behaviors"). &nbsp;The number of lionfish on each reef that arrived at or departed from each reef to/from the surrounding seagrass habtiat was recorded throughout each visit ("Movement"). &nbsp;Censuses of</p> Methods and Sampling: <p>This was an observational field study conducted from June - August 2012 to determine whether lionfish behavior and movements change at different local lionfish and prey fish densities. &nbsp;The study was conducted on sixteen reefs in Rock Sound, Elethera, The Bahamas.&nbsp; All reefs were at least 300 m from any reef on which lionfish removals had occurred, and were selected to encompass a range of natural lionfish densities and reef sizes. &nbsp;</p>
<p>A pair of divers visited each reef at three times of day: within 2 hours of sunrise (‘dawn’), greater than 3 hours from sunrise or sunset (‘midday’), and within 2 hours of sunset (‘dusk’).&nbsp; Upon arriving at a reef, observers counted the number of lionfish present by conducting lionfish-focused searches.&nbsp; For each lionfish, observers recorded the size (total length, visually estimated to the nearest cm), behavior, and location the moment it was sighted.&nbsp; Behaviors were categorized as resting (sitting on the substrate, not moving), hovering (in the water column oriented parallel to the bottom, but not moving), swimming (actively moving), or hunting (oriented head down with pectoral fins flared).&nbsp; Location was categorized as the microhabitat on which lionfish were observed (e.g. under a ledge, on top of the reef, in the surrounding seagrass) and later divided into two major categories: sheltering (hidden under structure) or exposed (on top of reef or in surrounding area).&nbsp; Then, 10-minute focal observations were conducted on two randomly-selected lionfish or a single lionfish when there was only one individual present per reef.&nbsp; During focal observations, a trained observer recorded the behavior of lionfish at 30-second intervals for 10 minutes using the same categories as above.&nbsp; The observers also noted any strikes at prey, successful kills, and obviously aggressive interactions (chases, posturing) between lionfish or between lionfish and other species.&nbsp; Throughout the entire visit to each reef, divers noted the time when any lionfish departed from or arrived at the reef and its behavior.&nbsp; A lionfish was defined as departing from the reef if it traveled at least 10 m from the reef.&nbsp; A lionfish was considered arriving at a reef if it swam in from the surrounding areas and had not been previously observed at that reef during that observation period.&nbsp; At the conclusion of the focal observations, the divers re-counted the number of lionfish present while conducting a survey of resident native fishes.&nbsp; Divers recorded the abundance and body size (TL) of all fish 1 - 15 cm TL, native mesopredators that are ecologically similar to lionfish (e.g. <em>Cephalopholis cruentata</em> [graysby grouper]), and top predators (e.g. <em>Epinephelus striatus</em> [Nassau grouper]) on and within 1 m of the reef.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1233027 Award URL: http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1233027
completed
Mark Hixon
University of Hawaii
Department of Zoology 3029 Cordley Hall
Corvallis
OR
97331-2914
USA
hixonm@science.oregonstate.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
date
reef
time_start
time_end
time_period
num_start
num_end
num_max
num_new
num_departed
proportion_new
proportion_departed
theme
None, User defined
date
site
time_start
time_end
time of day
count
No BCO-DMO term
featureType
BCO-DMO Standard Parameters
Eleuthera_Reef_Surveys_2012
service
Deployment Activity
Eleuthera, Bahamas
place
Locations
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.
Mechanisms and Consequences of Fish Biodiversity Loss on Atlantic Coral Reefs Caused by Invasive Pacific Lionfish
http://hixon.science.oregonstate.edu/content/highlight-lionfish-invasion
Mechanisms and Consequences of Fish Biodiversity Loss on Atlantic Coral Reefs Caused by Invasive Pacific Lionfish
<p>The Pacific red lionfish (Pterois volitans), a popular aquarium fish, was introduced to the Atlantic Ocean in the vicinity of Florida in the late 20th century. Voraciously consuming small native coral-reef fishes, including the juveniles of fisheries and ecologically important species, the invader has undergone a population explosion that now ranges from the U.S. southeastern seaboard to the Gulf of Mexico and across the greater Caribbean region. The PI's past research determined that invasive lionfish (1) have escaped their natural enemies in the Pacific (lionfish are much less abundant in their native range); (2) are not yet controlled by Atlantic predators, competitors, or parasites; (3) have strong negative effects on populations of native Atlantic fishes; and (4) locally reduce the diversity (number of species) of native fishes. The lionfish invasion has been recognized as one of the major conservation threats worldwide.</p>
<p>The Bahamas support the highest abundances of invasive lionfish globally. This system thus provides an unprecedented opportunity to understand the direct and indirect effects of a major invader on a diverse community, as well as the underlying causative mechanisms. The PI will focus on five related questions: (1) How does long-term predation by lionfish alter the structure of native reef-fish communities? (2) How does lionfish predation destabilize native prey population dynamics, possibly causing local extinctions? (3) Is there a lionfish-herbivore-seaweed trophic cascade on invaded reefs? (4) How do lionfish modify cleaning mutualisms on invaded reefs? (5) Are lionfish reaching densities where natural population limits are evident? </p>
BiodiversityLossEffects_lionfish
largerWorkCitation
project
eng; USA
oceans
Eleuthera, Bahamas
2012-07-16
2012-08-30
Three Bahamian sites: 24.8318, -076.3299; 23.8562, -076.2250; 23.7727, -076.1071; Caribbean Netherlands: 12.1599, -068.2820
0
BCO-DMO catalogue of parameters from The number of lionfish that moved between reefs and seagrass in Eleuthera, Bahamas from July to August in 2012
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/653762.rdf
Name: date
Units: unitless
Description: Date that reef was surveyed; mm/dd/yy
http://lod.bco-dmo.org/id/dataset-parameter/653763.rdf
Name: reef
Units: unitless
Description: Reef id where lionfish were observed
http://lod.bco-dmo.org/id/dataset-parameter/653764.rdf
Name: time_start
Units: unitless
Description: Time that visit to the reef began; HH:MM
http://lod.bco-dmo.org/id/dataset-parameter/653765.rdf
Name: time_end
Units: unitless
Description: Time that visit to the reef ended; HH:MM
http://lod.bco-dmo.org/id/dataset-parameter/653766.rdf
Name: time_period
Units: unitless
Description: Time of observation; classified as either dawn midday or dusk
http://lod.bco-dmo.org/id/dataset-parameter/653767.rdf
Name: num_start
Units: count
Description: Number of lionfish on the reef at the start of the visit
http://lod.bco-dmo.org/id/dataset-parameter/653768.rdf
Name: num_end
Units: count
Description: Number of lionfish on the reef at the end of the visit
http://lod.bco-dmo.org/id/dataset-parameter/653769.rdf
Name: num_max
Units: count
Description: Maximum number of lionfish on the reef at any point during the visit
http://lod.bco-dmo.org/id/dataset-parameter/653770.rdf
Name: num_new
Units: count
Description: Number of new lionfish that arrived at the reef during the visit
http://lod.bco-dmo.org/id/dataset-parameter/653771.rdf
Name: num_departed
Units: count
Description: Number of lionfish that departed from the reef during the visit
http://lod.bco-dmo.org/id/dataset-parameter/653772.rdf
Name: proportion_new
Units: dimensionless
Description: Proportion of new lionfish that arrived at the reef during the visit
http://lod.bco-dmo.org/id/dataset-parameter/653773.rdf
Name: proportion_departed
Units: dimensionless
Description: Proportion of lionfish that departed from the reef during the visit
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
3688
https://darchive.mblwhoilibrary.org/bitstream/1912/24162/1/dataset-653754_lionfish-movement-between-reefs-and-seagrass__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.653754.1
download
onLine
dataset
<p>This was an observational field study conducted from June - August 2012 to determine whether lionfish behavior and movements change at different local lionfish and prey fish densities. &nbsp;The study was conducted on sixteen reefs in Rock Sound, Elethera, The Bahamas.&nbsp; All reefs were at least 300 m from any reef on which lionfish removals had occurred, and were selected to encompass a range of natural lionfish densities and reef sizes. &nbsp;</p>
<p>A pair of divers visited each reef at three times of day: within 2 hours of sunrise (‘dawn’), greater than 3 hours from sunrise or sunset (‘midday’), and within 2 hours of sunset (‘dusk’).&nbsp; Upon arriving at a reef, observers counted the number of lionfish present by conducting lionfish-focused searches.&nbsp; For each lionfish, observers recorded the size (total length, visually estimated to the nearest cm), behavior, and location the moment it was sighted.&nbsp; Behaviors were categorized as resting (sitting on the substrate, not moving), hovering (in the water column oriented parallel to the bottom, but not moving), swimming (actively moving), or hunting (oriented head down with pectoral fins flared).&nbsp; Location was categorized as the microhabitat on which lionfish were observed (e.g. under a ledge, on top of the reef, in the surrounding seagrass) and later divided into two major categories: sheltering (hidden under structure) or exposed (on top of reef or in surrounding area).&nbsp; Then, 10-minute focal observations were conducted on two randomly-selected lionfish or a single lionfish when there was only one individual present per reef.&nbsp; During focal observations, a trained observer recorded the behavior of lionfish at 30-second intervals for 10 minutes using the same categories as above.&nbsp; The observers also noted any strikes at prey, successful kills, and obviously aggressive interactions (chases, posturing) between lionfish or between lionfish and other species.&nbsp; Throughout the entire visit to each reef, divers noted the time when any lionfish departed from or arrived at the reef and its behavior.&nbsp; A lionfish was defined as departing from the reef if it traveled at least 10 m from the reef.&nbsp; A lionfish was considered arriving at a reef if it swam in from the surrounding areas and had not been previously observed at that reef during that observation period.&nbsp; At the conclusion of the focal observations, the divers re-counted the number of lionfish present while conducting a survey of resident native fishes.&nbsp; Divers recorded the abundance and body size (TL) of all fish 1 - 15 cm TL, native mesopredators that are ecologically similar to lionfish (e.g. <em>Cephalopholis cruentata</em> [graysby grouper]), and top predators (e.g. <em>Epinephelus striatus</em> [Nassau grouper]) on and within 1 m of the reef.</p>
Specified by the Principal Investigator(s)
<p>All data were entered by one person, and then subsequently checked to ensure accuracy.&nbsp; Note that several reefs included in the data file were not included in any analyses because they were too close to other reefs, and/or too small, and/or were not visited at all three time periods: CEI 83 Sat, CEI 97 Oct, CEI Biscuit, CEI Biscuit-2, CEI Biscuit-3, CEI Friendly, CEI Friendly Dat, CEI Friendly Sat 3, and CEI Nicola Sat.&nbsp;</p>
<p><strong><span style="font-size:11px">DMO Notes:</span></strong></p>
<p><span style="font-size:11px">-reformatted column names to comply with BCO-DMO standards<br />
-replaced all spaces with "_"<br />
-replaced all blank cells with "nd"</span></p>
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
Deployment: Eleuthera_Reef_Surveys_2012
Eleuthera_Reef_Surveys_2012
Cape_Eleuthera_Reefs
island
Eleuthera_Reef_Surveys_2012
Mark Hixon
Oregon State University
Cape_Eleuthera_Reefs
island