http://lod.bco-dmo.org/id/dataset/542922
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
2014-12-17
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Counts of zootaxa collected in artificial seagrass in San Diego Bay, CA from 2012-2013 (Eelgrass Hab Fragmentation project)
2014-12-12
publication
2014-12-12
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-04-15
publication
https://doi.org/10.26008/1912/bco-dmo.542922.1
Kevin Alexander Hovel
San Diego State University
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: Hovel, K. (2021) Counts of zootaxa collected in artificial seagrass in San Diego Bay, CA from 2012-2013 (Eelgrass Hab Fragmentation project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2014-12-12 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.542922.1 [access date]
Counts of zootaxa collected in artificial seagrass in San Diego Bay Dataset Description: <p>Access to this dataset is restricted until June 2015. &nbsp;Please contact the PI for further information.</p>
<p>The data are counts of taxa from samples of artificial seagrass (used to simulate eelgrass, <em>Zostera marina</em> L.) in San Diego Bay.&nbsp; Each line of data represents the total number of individuals from each taxon collected in a 0.25 x 0.25 m artificial seagrass unit (ASU) deployed in San Diego Bay.&nbsp; The density of individuals per square meter can be calculated by multiplying counts by 16. Taxa are identified to species where possible, but for some (primarily amphipods), identifications are to the family or genus level.&nbsp;</p> Methods and Sampling: <p>Experiment #1: Deployments 1 and 2 were part of this experiment, which took place in central San Diego Bay, California, USA. The objective of this experiment on seagrass habitat fragmentation was to determine the interactive effects of habitat loss and structural complexity on epifaunal diversity, abundance, and biomass. Structural complexity was represented by shoot density, which varied across three levels (low SC (160 shoots m-2 = 10 shoots per ASU), intermediate SC (512 shoots m-2 = 32 shoots per ASU), and high SC (1024 shoots m-2 = 64 shoots per ASU). Habitat loss varied over 10 levels, from 0 to 90% loss (specifically, 0, 10, 20, 40, 60, 70, 75, 80, 85, or 90% habitat loss). These variables were fully crossed to allow a determination of how structural complexity influences the relationship between habitat loss and epifaunal community structure. For this experiment, epifauna are crustaceans, molluscs, and other taxa that are residents in seagrass habitat (size range ca. 0.5 mm - 2 cm in body length). The experiment was conducted by creating 30 plots of artificial seagrass (each 2 m x 2 m), each of which was modular such that small sections (known as ASUs, for “Artificial Seagrass Unit”) of each could be removed to simulate habitat loss. Each ASU consisted of a 25 x 25 cm square of black plastic mesh to which were tied 64 artificial eelgrass shoots. Each artificial seagrass shoot was a 1 m long piece of green polypropylene ribbon folded in half and tied to the mesh to form two 50 cm tall simulated eelgrass blades. Plots were laid out in the shallow subtidal zone of San Diego Bay, were allowed to be colonized by organisms for 45 d, and then were experimentally fragmented by removing the appropriate number of modules from each. One month later, samples were collected from each plot. Four ASUs were collected from each plot, rinsed into sieves, and animals preserved in 10% formalin.</p>
<p>Epifauna were sorted in the laboratory using dissecting microscopes. To make sorting more efficient, animals first were sorted into two sizes, those that were retained on a 2.8 mm sieve, and those that were retained on a 0.5 mm sieve. Animals were sorted to species, genus, or family (lowest category possible) using field guides such as the Light and Smith Guide to Intertidal Invertebrates. Training for taxon identification was aided by digital photographs taken for most taxa. Specimens of small, similar looking taxa (e.g. amphipods) were sent to other benthic ecology laboratories for confirmation of identification.</p>
<p><u>Experiment #2:</u> Deployments 3 and 4 were part of this experiment, which took place near the mouth of San Diego Bay, California, USA, adjacent to Shelter Island. The objective of this experiment on seagrass habitat fragmentation was to determine the interactive effects of predator access and habitat patchiness on epifaunal diversity, abundance, and biomass. The general design of the experiment matched that of Experiment #1, except that all plots consisted of the same structural complexity, and that plots were not fragmented after being colonized (instead, plots were deployed pre-fragmented [10 levels] and were colonized in that state).&nbsp; Instead of varying structural complexity, predator access to plots was varied by creating three treatments: caged ASUs (full wire mesh cage of selected ASUs to restrict predators, but allow colonization by epifauna), open ASUs (no cage), and cage-control ASUs (wire mesh cages with two sides removed to allow access by predators, but otherwise identical to full cages). Cages and cage-controls were placed over three separate AUSs in each plot for the duration of the soak. To sample plots, three ASUs were retrieved from each plot and handled identically to Experiment 1. For deployment 3, a shoot density of 1024 shoots m<sup>-2</sup> was used in all plots. For deployment 4, a shoot density of 106 shoots m<sup>-2</sup> was used in all plots.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1131616 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1131616
completed
Kevin Alexander Hovel
San Diego State University
(619) 820-3613
Department of Biology San Diego State University 5500 Campanile Dr.
San Diego
CA
92182
USA
khovel@sdsu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
expt
deployment
date
site
lat
lon
sorter_id
plot
square
density_shoots
predator_tmt
pcnt_removed
notes
group
taxon
count
dissecting microscope
theme
None, User defined
experiment id
No BCO-DMO term
date
site
latitude
longitude
comments
animal group (category)
taxon
count
featureType
BCO-DMO Standard Parameters
Microscope - Optical
instrument
BCO-DMO Standard Instruments
Hovel_SanDiegoBay_2013
service
Deployment Activity
San Diego Bay,. CA
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.
Habitat fragmentation as a process: how habitat context influences the effects of eelgrass loss on epifaunal community structure
https://osprey.bco-dmo.org/project/542509
Habitat fragmentation as a process: how habitat context influences the effects of eelgrass loss on epifaunal community structure
<p><em>Description from NSF award abstract:</em><br />
In this research project, the investigator will carry out a set of field experiments to determine whether the effects of experimentally fragmenting seagrass habitat on epifaunal community structure are mediated by environmental factors that typically co-vary in marine habitats: structural complexity and predation risk.</p>
<p>Studies in terrestrial and marine systems collectively show that the effects of patchiness depend largely on landscape context, i.e., the characteristics and settings of individual landscapes. Progress in exploring what aspects of landscape context modify effects of habitat fragmentation on ecological processes has been slow. The experiments developed for this research directly address primary questions about the role of habitat structure in moderating ecological processes in a critical nursery habitat, and take initial steps forward to explore three important concepts: (i) how communities respond to the process of habitat fragmentation, rather than simply how communities differ between continuous and patchy areas; (ii) the relative influences of the two major components of habitat fragmentation (habitat loss and increasing patchiness) on biodiversity; and (iii) how co-varying factors in naturally occurring habitats alter faunal responses to large-scale alteration of habitat.</p>
<p>Seagrasses provide critical ecosystem services including the formation of critical refuge and foraging areas for the postlarvae, juveniles, and adults of many species of fishes and invertebrates that feed on diverse assemblages of invertebrate epifauna and infauna. However, disturbances that fragment seagrass habitat are increasingly common and approximately 30% of the world's seagrass habitat has been lost. Disturbances to seagrass habitat may alter feedbacks between plants and invertebrate grazers that influence ecosystem function and may increase susceptibility to species invasions.</p>
Eelgrass Hab Fragmentation
largerWorkCitation
project
eng; USA
biota
oceans
San Diego Bay,. CA
-117.14
-117.14
32.65
32.71
2012-05-01
2013-07-24
San Diego Bay, San Diego, CA
0
BCO-DMO catalogue of parameters from Counts of zootaxa collected in artificial seagrass in San Diego Bay, CA from 2012-2013 (Eelgrass Hab Fragmentation 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
http://lod.bco-dmo.org/id/dataset-parameter/543019.rdf
Name: expt
Units: unitless
Description: <p>experiment id number</p>
http://lod.bco-dmo.org/id/dataset-parameter/543020.rdf
Name: deployment
Units: unitless
Description: <p>deployment id number</p>
http://lod.bco-dmo.org/id/dataset-parameter/543021.rdf
Name: date
Units: yyyy-mm-dd
Description: <p>date the sample was collected in the field</p>
http://lod.bco-dmo.org/id/dataset-parameter/543022.rdf
Name: site
Units: unitless
Description: <p>name of the site for the experiment</p>
http://lod.bco-dmo.org/id/dataset-parameter/543023.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/543024.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/543025.rdf
Name: sorter_id
Units: unitless
Description: <p>initials of the person who sorted the sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/543026.rdf
Name: plot
Units: unitless
Description: <p>the plot number (1 - 30)</p>
http://lod.bco-dmo.org/id/dataset-parameter/543027.rdf
Name: square
Units: unitless
Description: <p>the replicate asu taken from each plot (either 1; 2; 3; or 4)</p>
http://lod.bco-dmo.org/id/dataset-parameter/543028.rdf
Name: density_shoots
Units: unitless
Description: <p>the shoot density for each plot. One of three levels; low; medium; or high.</p>
http://lod.bco-dmo.org/id/dataset-parameter/543029.rdf
Name: predator_tmt
Units: unitless
Description: <p>the predator treatment for each plot. One of three levels; cage; cage control (cc); or open.</p>
http://lod.bco-dmo.org/id/dataset-parameter/543030.rdf
Name: pcnt_removed
Units: percent
Description: <p>the percent of the plot that was removed when the plot was fragmented. One of 10 values: 0; 10; 20; 40; 60; 70; 75; 80; 85; or 90%.</p>
http://lod.bco-dmo.org/id/dataset-parameter/543031.rdf
Name: notes
Units: unitless
Description: <p>comments on samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/543032.rdf
Name: group
Units: unitless
Description: <p>higher taxonomic group</p>
http://lod.bco-dmo.org/id/dataset-parameter/543033.rdf
Name: taxon
Units: unitless
Description: <p>generally species name</p>
http://lod.bco-dmo.org/id/dataset-parameter/543034.rdf
Name: count
Units: animals
Description: <p>number of individuals found in each artificial seagrass unit</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
6068946
https://darchive.mblwhoilibrary.org/bitstream/1912/26957/1/dataset-542922_artificial-seagrass-faunal-counts__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.542922.1
download
onLine
dataset
<p>Experiment #1: Deployments 1 and 2 were part of this experiment, which took place in central San Diego Bay, California, USA. The objective of this experiment on seagrass habitat fragmentation was to determine the interactive effects of habitat loss and structural complexity on epifaunal diversity, abundance, and biomass. Structural complexity was represented by shoot density, which varied across three levels (low SC (160 shoots m-2 = 10 shoots per ASU), intermediate SC (512 shoots m-2 = 32 shoots per ASU), and high SC (1024 shoots m-2 = 64 shoots per ASU). Habitat loss varied over 10 levels, from 0 to 90% loss (specifically, 0, 10, 20, 40, 60, 70, 75, 80, 85, or 90% habitat loss). These variables were fully crossed to allow a determination of how structural complexity influences the relationship between habitat loss and epifaunal community structure. For this experiment, epifauna are crustaceans, molluscs, and other taxa that are residents in seagrass habitat (size range ca. 0.5 mm - 2 cm in body length). The experiment was conducted by creating 30 plots of artificial seagrass (each 2 m x 2 m), each of which was modular such that small sections (known as ASUs, for “Artificial Seagrass Unit”) of each could be removed to simulate habitat loss. Each ASU consisted of a 25 x 25 cm square of black plastic mesh to which were tied 64 artificial eelgrass shoots. Each artificial seagrass shoot was a 1 m long piece of green polypropylene ribbon folded in half and tied to the mesh to form two 50 cm tall simulated eelgrass blades. Plots were laid out in the shallow subtidal zone of San Diego Bay, were allowed to be colonized by organisms for 45 d, and then were experimentally fragmented by removing the appropriate number of modules from each. One month later, samples were collected from each plot. Four ASUs were collected from each plot, rinsed into sieves, and animals preserved in 10% formalin.</p>
<p>Epifauna were sorted in the laboratory using dissecting microscopes. To make sorting more efficient, animals first were sorted into two sizes, those that were retained on a 2.8 mm sieve, and those that were retained on a 0.5 mm sieve. Animals were sorted to species, genus, or family (lowest category possible) using field guides such as the Light and Smith Guide to Intertidal Invertebrates. Training for taxon identification was aided by digital photographs taken for most taxa. Specimens of small, similar looking taxa (e.g. amphipods) were sent to other benthic ecology laboratories for confirmation of identification.</p>
<p><u>Experiment #2:</u> Deployments 3 and 4 were part of this experiment, which took place near the mouth of San Diego Bay, California, USA, adjacent to Shelter Island. The objective of this experiment on seagrass habitat fragmentation was to determine the interactive effects of predator access and habitat patchiness on epifaunal diversity, abundance, and biomass. The general design of the experiment matched that of Experiment #1, except that all plots consisted of the same structural complexity, and that plots were not fragmented after being colonized (instead, plots were deployed pre-fragmented [10 levels] and were colonized in that state).&nbsp; Instead of varying structural complexity, predator access to plots was varied by creating three treatments: caged ASUs (full wire mesh cage of selected ASUs to restrict predators, but allow colonization by epifauna), open ASUs (no cage), and cage-control ASUs (wire mesh cages with two sides removed to allow access by predators, but otherwise identical to full cages). Cages and cage-controls were placed over three separate AUSs in each plot for the duration of the soak. To sample plots, three ASUs were retrieved from each plot and handled identically to Experiment 1. For deployment 3, a shoot density of 1024 shoots m<sup>-2</sup> was used in all plots. For deployment 4, a shoot density of 106 shoots m<sup>-2</sup> was used in all plots.</p>
Specified by the Principal Investigator(s)
<p><strong>BCO-DMO Processing:</strong></p>
<p>- added conventional header with dataset name, PI name, version date<br />
-&nbsp;renamed parameters to BCO-DMO standard<br />
-&nbsp;added lab, lat, lon, experiment and deployment columns<br />
-&nbsp;replaced blanks with 'nd' (no data); replaced spaces with under-scores.<br />
-&nbsp;lined up data for all taxa for all expts. by adding columns where needed</p>
<p>&nbsp;</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
dissecting microscope
dissecting microscope
PI Supplied Instrument Name: dissecting microscope Instrument Name: Microscope - Optical Instrument Short Name: Instrument Description: Instruments that generate enlarged images of samples using the phenomena of reflection and absorption of visible light. Includes conventional and inverted instruments. Also called a "light microscope". Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB05/
Deployment: Hovel_SanDiegoBay_2013
Hovel_SanDiegoBay_2013
Unknown Platform
Hovel_SanDiegoBay_2013
Kevin Alexander Hovel
San Diego State University
Unknown Platform