http://lod.bco-dmo.org/id/dataset/869574
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
2022-02-09
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Data on whelk morphometrics from the Bodega Marine Laboratory, University of California, Davis in May-August of 2017.
2022-02-22
publication
2022-02-22
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-03-16
publication
https://doi.org/10.26008/1912/bco-dmo.869574.1
Brian Gaylord
University of California - Davis: Bodega Marine Laboratory
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: Ng, G., Gaylord, B. (2022) Data on whelk morphometrics from the Bodega Marine Laboratory, University of California, Davis in May-August of 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-02-22 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.869574.1 [access date]
Legacy of predators: morphometrics Dataset Description: Methods and Sampling: <p>We conducted laboratory experiments to test whether previous predator exposure had a sustained effect on prey foraging and in turn on a basal resource, even after the predator was removed. We tested for both behavioral and morphological legacies of prior predation. The study system consisted of a tri-trophic food chain, using the red rock crab, <em>Cancer productus</em>, as the predator, the carnivorous whelk, <em>Nucella ostrina</em>, as the prey species, and the California mussel, <em>Mytilus californianus</em>, as the basal resource.</p>
<p>The first step of the experiment consisted of conditioning the intermediate consumer (<em>Nucella ostrina</em>) in the tri-trophic food web to the presence of predators or not. The above conditioning period lasted 75 days, a duration that has been documented in previous studies to cause a morphological change in Nucella. Then we tested for proportional changes in the length and weight of our snails that may have occurred during the conditioning phase and the weight:length ratio by repeating the measurements we had made at the outset of our experiments. Using a subset of the conditioned and naïve snails (n=80 each), we next tested how predator conditioning affected their behavior and foraging when they were subsequently exposed to predator cue or not (Ng &amp; Gaylord (2020), Fig. 2). If predator conditioning altered Nucella morphology and their foraging, we also wanted to examine whether a snail's size might alter its response to predator cue and its foraging on mussels. We therefore first grouped the Nucella into five size classes of 16 Nucella each, from smallest to largest, creating a size gradient. We created this array of multiple size classes for both predator-conditioned and naïve snails. We then divided each set of 16 snails into two containers (33 mm × 20 mm × 11.5 mm) with eight Nucella individuals per container; half of the containers received outflow from sumps containing crabs and half received seawater free of predator cue (this overall protocol thus yielded 2 conditioning exposures x 5 size classes x 2 cue treatments = 20 containers total). All 20 containers were then supplied with 20 juvenile mussel individuals each, as a basal food source for the carnivorous snails. This configuration created a 2 × 2 design stratified by size with conditioning history as one treatment and predator cue as the second treatment. We then measured the number of mussels consumed by the snails daily over the course of the next 15 days, without replacement of consumed mussels, along with the number of snails above or below the water line within each container as a metric of anti-predatory escape behavior.</p>
<p>Further methods are detailed in Ng and Gaylord (2020). This dataset has the raw morphometrics of the whelks (Nucella) used in the experiment and includes wet weight and length of shell. The dataset includes morphometrics at the start of the experiment and repeated measures over time. In addition, the type of treatment the Nucella experienced is also included; in the control treatment, snails were exposed to just running seawater over the course of the experiment, and in the crab treatment, snails were exposed to <em>Cancer productus</em> cues. Snails were housed in multiple containers, which were used as random factors in the analysis. At the start of the experiment, snails were transferred from small containers (denoted as ‘Container’ in the dataset) into larger containers labeled as New.containers.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1636191 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1636191
completed
Brian Gaylord
University of California - Davis: Bodega Marine Laboratory
707-875-1940
Bodega Marine Laboratory & Department of Evolution and Ecology 2099 Westshore Road, P.O. Box 247
Bodega Bay
CA
94923
USA
bpgaylord@ucdavis.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
New_containers
Containers
Size
Weight
Month
Treat
theme
None, User defined
tank
length_range
weight
month of year
treatment
featureType
BCO-DMO Standard Parameters
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.
Trophic consequences of ocean acidification: Intertidal sea star predators and their grazer prey
https://osprey.bco-dmo.org/project/712799
Trophic consequences of ocean acidification: Intertidal sea star predators and their grazer prey
<p><em>NSF Award Abstract:</em><br />
The absorption of human-produced carbon dioxide into the world's oceans is altering the chemistry of seawater, including decreasing its pH. Such changes, collectively called "ocean acidification", are expected to influence numerous types of sea creatures. This project examines how shifts in ocean pH affect animal behavior and thus interactions among species. It uses a case study system that involves sea star predators, snail grazers that they eat, and seaweeds consumed by the latter. The rocky-shore habitats where these organisms live have a long history of attention, and new findings from this work will further extend an already-large body of marine ecological knowledge. The project provides support for graduate and undergraduate students, including underrepresented students from a nearby community college. The project underpins the development of a new educational module for local K-12 schools. Findings will moreover be communicated to the public through the use of short film documentaries, as well as through established relationships with policy, management, and industry groups, and contacts with the media.</p>
<p>Ocean acidification is a global-scale perturbation. Most research on the topic, however, has examined effects on single species operating in isolation, leaving interactions among species underexplored. This project confronts this knowledge gap by considering how ocean acidification may shift predator-prey relationships through altered behavior. It targets as a model system sea stars, their gastropod grazer prey, and macoalgae consumed by the latter, via four lines of inquiry. 1) The project examines the functional response of the focal taxa to altered seawater chemistry, using experiments that target up to 16 discrete levels of pH. This experimental design is essential for identifying nonlinearities and tipping points. 2) The project addresses both consumptive and non-consumptive components of direct and indirect species interactions. The capacity of ocean acidification to influence such links is poorly known, and better understanding of this issue is a recognized priority. 3) The project combines controlled laboratory experiments with field trials that exploit tide pools and their unique pH signatures as natural mesocosms. Field tests of ocean acidification effects are relatively rare and are sorely needed. 4) A final research phase expands upon the above three components to address effects of ocean acidification on multiple additional taxa that interact in rocky intertidal systems, to provide a broad database that may have utility for future experiments or modeling.</p>
BOAR Trophic
largerWorkCitation
project
eng; USA
oceans
-123.04805
-123.04805
38.33325
38.33325
2017-08-13
2017-08-27
Central California coast, USA
0
BCO-DMO catalogue of parameters from Data on whelk morphometrics from the Bodega Marine Laboratory, University of California, Davis in May-August of 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/870263.rdf
Name: New_containers
Units: unitless
Description: <p>Container ID in which snails were kept </p>
http://lod.bco-dmo.org/id/dataset-parameter/870264.rdf
Name: Containers
Units: unitless
Description: <p>Original container ID in which snails were kept but then moved</p>
http://lod.bco-dmo.org/id/dataset-parameter/870265.rdf
Name: Size
Units: millimeters (mm)
Description: <p>Length of shell from tip to apertural notch</p>
http://lod.bco-dmo.org/id/dataset-parameter/870266.rdf
Name: Weight
Units: grams (g)
Description: <p>Wet weight of Nucella</p>
http://lod.bco-dmo.org/id/dataset-parameter/870267.rdf
Name: Month
Units: unitless
Description: <p>Month in which measurement was taken</p>
http://lod.bco-dmo.org/id/dataset-parameter/870268.rdf
Name: Treat
Units: unitless
Description: <p>Treatment identifier for experiment (Control or Crab)</p>
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
17971
https://darchive.mblwhoilibrary.org/bitstream/1912/28199/1/dataset-869574_legacy-predators-morphometrics__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.869574.1
download
onLine
dataset
<p>We conducted laboratory experiments to test whether previous predator exposure had a sustained effect on prey foraging and in turn on a basal resource, even after the predator was removed. We tested for both behavioral and morphological legacies of prior predation. The study system consisted of a tri-trophic food chain, using the red rock crab, <em>Cancer productus</em>, as the predator, the carnivorous whelk, <em>Nucella ostrina</em>, as the prey species, and the California mussel, <em>Mytilus californianus</em>, as the basal resource.</p>
<p>The first step of the experiment consisted of conditioning the intermediate consumer (<em>Nucella ostrina</em>) in the tri-trophic food web to the presence of predators or not. The above conditioning period lasted 75 days, a duration that has been documented in previous studies to cause a morphological change in Nucella. Then we tested for proportional changes in the length and weight of our snails that may have occurred during the conditioning phase and the weight:length ratio by repeating the measurements we had made at the outset of our experiments. Using a subset of the conditioned and naïve snails (n=80 each), we next tested how predator conditioning affected their behavior and foraging when they were subsequently exposed to predator cue or not (Ng &amp; Gaylord (2020), Fig. 2). If predator conditioning altered Nucella morphology and their foraging, we also wanted to examine whether a snail's size might alter its response to predator cue and its foraging on mussels. We therefore first grouped the Nucella into five size classes of 16 Nucella each, from smallest to largest, creating a size gradient. We created this array of multiple size classes for both predator-conditioned and naïve snails. We then divided each set of 16 snails into two containers (33 mm × 20 mm × 11.5 mm) with eight Nucella individuals per container; half of the containers received outflow from sumps containing crabs and half received seawater free of predator cue (this overall protocol thus yielded 2 conditioning exposures x 5 size classes x 2 cue treatments = 20 containers total). All 20 containers were then supplied with 20 juvenile mussel individuals each, as a basal food source for the carnivorous snails. This configuration created a 2 × 2 design stratified by size with conditioning history as one treatment and predator cue as the second treatment. We then measured the number of mussels consumed by the snails daily over the course of the next 15 days, without replacement of consumed mussels, along with the number of snails above or below the water line within each container as a metric of anti-predatory escape behavior.</p>
<p>Further methods are detailed in Ng and Gaylord (2020). This dataset has the raw morphometrics of the whelks (Nucella) used in the experiment and includes wet weight and length of shell. The dataset includes morphometrics at the start of the experiment and repeated measures over time. In addition, the type of treatment the Nucella experienced is also included; in the control treatment, snails were exposed to just running seawater over the course of the experiment, and in the crab treatment, snails were exposed to <em>Cancer productus</em> cues. Snails were housed in multiple containers, which were used as random factors in the analysis. At the start of the experiment, snails were transferred from small containers (denoted as ‘Container’ in the dataset) into larger containers labeled as New.containers.</p>
Specified by the Principal Investigator(s)
<p>Data Processing:<br />
The morphometrics was analyzed using a mixed-effects model with containers as random effects and both treatment type and type as factors. All data processing was conducted in R.</p>
<p>BCO-DMO Processing:<br />
- Adjusted field/parameter names to comply with BCO-DMO naming conventions<br />
- Added a conventional header with dataset name, PI names, version date</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