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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson
attribute NC_GLOBAL acquisition_description String For Table and Figure references below, see the document\n\"MinnowTrap_statistical_analysis.pdf\" in the Supplemental Files section.\n \nStudy Site Selection\n \nWe conducted our study across eight discrete seagrass meadows (hereafter\nreferred to as landscapes) located in Back Sound, North Carolina (NC), USA\n(3442\\u2032 N to 3439\\u2032 N, 7637\\u2032 W to 7631\\u2032 W) (Fig. S1). All of\nour sampled landscapes were composed of a mixture of Back Sound's dominant\nseagrasses: eelgrass and shoal grass, Halodule wrightii (Ascherson 1868)\n(Yeager et al. 2016). Landscapes were chosen based upon available aerial\nimagery in Google Earth Pro as of February 19, 2017, and ground-truthed for\nchanges in seasonal seagrass growth/senescence using summer, 2017, drone\nphotography and ImageJ 1.x (Schneider et al. 2012). No discernable differences\nin landscape fragmentation states (e.g. total area, number of patches) were\nfound between the two aerial imagery sources. All landscapes were relatively\nshallow (1-1.5 m depth at high tide), reasonably isolated from other seagrass\nbeds (distance to nearest seagrass meadow = 112 17 m [mean standard error])\nand were appropriately sized to encompass short-term (e.g., daily, monthly)\nmovements of common seagrass-associated fauna in this system (Yeager et al.\n2016). We identified similarly sized landscapes (25882 6592 m2) available in\nBack Sound by defining the minimum convex polygon surrounding the seagrass\nmeadow, regardless of the total seagrass cover within the polygon. Among eight\ncandidate landscapes of similar size, we defined four continuous landscapes\nand four fragmented landscapes based on the number of patches, the perimeter-\nto-area ratio, and the largest patch's percent cover of the total seagrass\narea (Table 1). Seagrass fragmentation is often naturally coupled with habitat\nloss (Wilcove et al. 1986), resulting in the mean seagrass area of our\nfragmented landscapes being nearly half that of our continuous landscapes\n(Table 1). Thus, our experiment was designed to examine the effects of\nfragmentation (i.e., the breaking apart of habitat concomitant with habitat\nloss) rather than fragmentation per se (i.e., the breaking apart of habitat\nwithout habitat loss; sensu Fahrig 2003).\n \nSeagrass-associated Fauna Sampling\n \nSeagrass-associated fauna were sampled to explore relationships between our\nobserved predation/depredation rates and seasonal faunal densities within each\nfragmentation state. We sampled seagrass-associated fauna during each crab\ntethering cycle with four baited (with ~ 8 pieces of dried dog food; Mahoney\net al. 2018) Gee-style minnow traps (41-cm long, 22-cm wide, 0.3-cm galvanized\nmesh-wire cylinders, with 4-cm diameter funneled openings) haphazardly\ndeployed in each landscape. We acknowledge that baiting traps increases catch\nrates in our system and could bias the captured community toward predators and\nscavengers (our target community), yet this increase in catch rate seems to be\nuniform across seagrass habitat structure variables (Mahoney et al. 2018). At\n24 h, faunae were enumerated, identified to the lowest taxonomical level\npossible, and released.  \n Point measurements of water temperature (C) were taken in each landscape at\nthe location and time of all faunal sampling using hand-held thermometers\n(Table S1). We chose temperature as our seasonality proxy (Fig. S2) because\nseveral other seasonally affected factors including faunal densities correlate\nwith water temperature variability. Additionally, the measurement of\ntemperature is easy, cheap, reliable, and comparable to previous studies.\n \nEquipment:  \n * Generic brand dog food  \n * Memphis and twine Gee-style minnow traps (41-cm long, 22-cm wide, 0.3-cm\ngalvanized mesh-wire cylinders, with 4-cm diameter funneled openings)
attribute NC_GLOBAL awards_0_award_nid String 714025
attribute NC_GLOBAL awards_0_award_number String OCE-1635950
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1635950 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Michael E. Sieracki
attribute NC_GLOBAL awards_0_program_manager_nid String 50446
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Seagrass fauna counts - Minnowtrap data \n  PI: Joel Fodrie \n  Data Version 1: 2019-10-29
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3  19 Dec 2019
attribute NC_GLOBAL date_created String 2019-10-29T19:00:27Z
attribute NC_GLOBAL date_modified String 2019-11-13T18:25:00Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.780027.1
attribute NC_GLOBAL Easternmost_Easting double -76.526267
attribute NC_GLOBAL geospatial_lat_max double 34.703251
attribute NC_GLOBAL geospatial_lat_min double 34.651056
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -76.526267
attribute NC_GLOBAL geospatial_lon_min double -76.587826
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/780027 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Memphis and twine Gee-style minnow traps (41-cm long, 22-cm wide, 0.3-cm galvanized mesh-wire cylinders, with 4-cm diameter funneled openings)
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 780121
attribute NC_GLOBAL instruments_0_description String shore fishing gear
attribute NC_GLOBAL instruments_0_instrument_name String minnow trap
attribute NC_GLOBAL instruments_0_instrument_nid String 679340
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, C_F, chemical, data, dataset, date, dmo, erddap, latitude, longitude, management, minnow, MinnowTrap_Num, name, num, oceanography, office, preliminary, scientific, Scientific_name, site, SiteID, species, Species_Num, time, trap
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/780027/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/780027 (external link)
attribute NC_GLOBAL Northernmost_Northing double 34.703251
attribute NC_GLOBAL param_mapping String {'780027': {'lat': 'master - latitude', 'lon': 'master - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/780027/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of North Carolina at Chapel Hill
attribute NC_GLOBAL people_0_affiliation_acronym String UNC-Chapel Hill-IMS
attribute NC_GLOBAL people_0_person_name String Dr F. Joel Fodrie
attribute NC_GLOBAL people_0_person_nid String 559341
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String University of North Carolina at Chapel Hill
attribute NC_GLOBAL people_1_affiliation_acronym String UNC-Chapel Hill-IMS
attribute NC_GLOBAL people_1_person_name String Amy Yarnall
attribute NC_GLOBAL people_1_person_nid String 780032
attribute NC_GLOBAL people_1_role String Contact
attribute NC_GLOBAL people_1_role_type String related
attribute NC_GLOBAL people_2_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_2_person_name String Amber York
attribute NC_GLOBAL people_2_person_nid String 643627
attribute NC_GLOBAL people_2_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL project String Habitat Fragmentation
attribute NC_GLOBAL projects_0_acronym String Habitat Fragmentation
attribute NC_GLOBAL projects_0_description String Amount and quality of habitat is thought to be of fundamental importance to maintaining coastal marine ecosystems. This research will use large-scale field experiments to help understand how and why fish populations respond to fragmentation of seagrass habitats. The question is complex because increased fragmentation in seagrass beds decreases the amount and also the configuration of the habitat (one patch splits into many, patches become further apart, the amount of edge increases, etc). Previous work by the investigators in natural seagrass meadows provided evidence that fragmentation interacts with amount of habitat to influence the community dynamics of fishes in coastal marine landscapes. Specifically, fragmentation had no effect when the habitat was large, but had a negative effect when habitat was smaller. In this study, the investigators will build artificial seagrass habitat to use in a series of manipulative field experiments at an ambitious scale. The results will provide new, more specific information about how coastal fish community dynamics are affected by changes in overall amount and fragmentation of seagrass habitat, in concert with factors such as disturbance, larval dispersal, and wave energy. The project will support two early-career investigators, inform habitat conservation strategies for coastal management, and provide training opportunities for graduate and undergraduate students. The investigators plan to target students from underrepresented groups for the research opportunities.\nBuilding on previous research in seagrass environments, this research will conduct a series of field experiments approach at novel, yet relevant scales, to test how habitat area and fragmentation affect fish diversity and productivity. Specifically, 15 by 15-m seagrass beds will be created using artificial seagrass units (ASUs) that control for within-patch-level (~1-10 m2) factors such as shoot density and length. The investigators will employ ASUs to manipulate total habitat area and the degree of fragmentation within seagrass beds in a temperate estuary in North Carolina. In year one, response of the fishes that colonize these landscapes will be measured as abundance, biomass, community structure, as well as taxonomic and functional diversity. Targeted ASU removals will then follow to determine species-specific responses to habitat disturbance. In year two, the landscape array and sampling regime will be doubled, and half of the landscapes will be seeded with post-larval fish of low dispersal ability to test whether pre- or post-recruitment processes drive landscape-scale patterns. In year three, the role of wave exposure (a natural driver of seagrass fragmentation) in mediating fish community response to landscape configuration will be tested by deploying ASU meadows across low and high energy environments.
attribute NC_GLOBAL projects_0_end_date String 2019-08
attribute NC_GLOBAL projects_0_geolocation String North Carolina
attribute NC_GLOBAL projects_0_name String Collaborative Research: Habitat fragmentation effects on fish diversity at landscape scales: experimental tests of multiple mechanisms
attribute NC_GLOBAL projects_0_project_nid String 714026
attribute NC_GLOBAL projects_0_start_date String 2016-09
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 34.651056
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Fauna species count data from minnow trap sampling within seagrass in Summer 2017 in Back Sound, North Carolina.
attribute NC_GLOBAL title String [Seagrass fauna counts] - Fauna species count data from minnow trap sampling within seagrass in Summer 2017 in Back Sound, North Carolina (Collaborative Research: Habitat fragmentation effects on fish diversity at landscape scales: experimental tests of multiple mechanisms)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -76.587826
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Date String
attribute Date bcodmo_name String date
attribute Date description String Date minnow trap deployed (ISO 8601 format yyyy-mm-dd)
attribute Date long_name String Date
attribute Date nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute Date source_name String Date
attribute Date time_precision String 1970-01-01
attribute Date units String unitless
variable SiteID String
attribute SiteID bcodmo_name String site
attribute SiteID description String Name of seagrass bed in which trap was deployed
attribute SiteID long_name String Site ID
attribute SiteID units String unitless
variable C_F String
attribute C_F bcodmo_name String site_descrip
attribute C_F description String Fragmentation state of seagrass bed: C = Continuous, F = Fragmented
attribute C_F long_name String C F
attribute C_F units String unitless
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 34.651056, 34.703251
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude double
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -76.587826, -76.526267
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Longitude
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable MinnowTrap_Num byte
attribute MinnowTrap_Num _FillValue byte 127
attribute MinnowTrap_Num actual_range byte 1, 4
attribute MinnowTrap_Num bcodmo_name String replicate
attribute MinnowTrap_Num description String Replicate number of minnow trap
attribute MinnowTrap_Num long_name String Minnow Trap Num
attribute MinnowTrap_Num units String unitless
variable Species String
attribute Species bcodmo_name String common_name
attribute Species description String Common name of species caught
attribute Species long_name String Species
attribute Species units String unitless
variable Scientific_name String
attribute Scientific_name bcodmo_name String taxon
attribute Scientific_name description String Scientific name of species caught
attribute Scientific_name long_name String Scientific Name
attribute Scientific_name units String unitless
variable Species_Num byte
attribute Species_Num _FillValue byte 127
attribute Species_Num actual_range byte 0, 33
attribute Species_Num bcodmo_name String count
attribute Species_Num description String Count number of individuals of a species caught in a minnow trap
attribute Species_Num long_name String Species Num
attribute Species_Num units String per individual

 
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