HTL-MAR-Regional-InvertDensity_csv

Regional study of Melampus bidentatus density and other invertebrates in northeast U.S. salt marshes

Download: HTL-MAR-Regional-InvertDensity.csv
Variables
DateCollected
  • Label: DateCollected
  • Definition: Date of collection
  • Type: Date/time
  • Date format: YYYY-MM-DD
  • Missing values:
    • NA = Data not available
Site
  • Label: Site
  • Definition: Research location
  • Type: Code list
  • Codes:
    • ME = Wells Harbor
    • GB = Great Bay National Estuarine Research Reserve
    • PIE = West Creek
    • NS = Musquaschut Brook
    • SIP = Little Sippewissett
    • MEBI = Barn Island
    • NB = Narragansett Bay National Estuarine Research Reserve
    • NYC = Pelham Bay
  • Missing values:
    • NA = Data not available
Habitat
  • Label: Habitat
  • Definition: Habitat from which data were collected
  • Type: Code list
  • Codes:
    • SP = Spartina patens dominated habitat
    • SSA = short-form Spartina alterniflora
    • TSA = tall-form Spartina alterniflora
    • TSP = Spartina patens transitioning to short-form Spartina alterniflora
  • Missing values:
    • NA = Data not available
Quadrat
  • Label: Quadrat
  • Definition: Replicate number of individual quadrat from which data was collected
  • Type: Nominal
  • Missing values: None specified
MelampusDensity
  • Label: MelampusDensity
  • Definition: Density of Melampus bidentatus snails (snails/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
MelampusEggDensity
  • Label: MelampusEggDensity
  • Definition: Density of Melampus bidentatus egg sacs (egg sacs/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
BrownAmphipodDensity
  • Label: BrownAmphipodDensity
  • Definition: Density of brown amphipods (Orchestia grillus) (amphipods/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
OrangeAmphipodDensity
  • Label: OrangeAmphipodDensity
  • Definition: Density of orange amphipods (Orchestia grillus, parasitized) (amphipods/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
IsopodDensity
  • Label: IsopodDensity
  • Definition: Density of isopods (Littorophiloscia vittata) (isopods/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
MusselDensity
  • Label: MusselDensity
  • Definition: Density of ribbed mussels (Geukensia demissa) (mussels/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
FidBurrowDensity
  • Label: FidBurrowDensity
  • Definition: Density of fiddler crab (Uca pugnax) burrows (burrows/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
PeriwinkleDensity
  • Label: PeriwinkleDensity
  • Definition: Density of periwinkle (Littorina littorea) (snails/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
GreenCrabDensity
  • Label: GreenCrabDensity
  • Definition: Density of green crabs (Carcinus maenas) (crabs/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
SpiderDensity
  • Label: SpiderDensity
  • Definition: Density of spiders (Not identified to species level) (spiders/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
MudSnailDensity
  • Label: MudSnailDensity
  • Definition: Density of mud snails (Nassarius obsoletus) (snails/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
MiteDensity
  • Label: MiteDensity
  • Definition: Density of red mites (mites/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
BeetleDensity
  • Label: BeetleDensity
  • Definition: Density of beetles (beetles/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
OthersnailDensity
  • Label: OthersnailDensity
  • Definition: Density of unknown snail species (snails/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
CaterpillarDensity
  • Label: CaterpillarDensity
  • Definition: Density of caterpillars (individuals/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
GreenheadLarvaeDensity
  • Label: GreenheadLarvaeDensity
  • Definition: Density of greenhead larvae (Tabanus nigrovittatus) (larvae/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
InsectLarvaeDensity
  • Label: InsectLarvaeDensity
  • Definition: Density of other insect larvae (not identified to species level) (larvae/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
LadybugDensity
  • Label: LadybugDensity
  • Definition: Density of ladybugs (bugs/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
AntDensity
  • Label: AntDensity
  • Definition: Density of black ants (ants/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
TotalInvertDensity
  • Label: TotalInvertDensity
  • Definition: Density of totaled invertebrates (inverts/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
LiveSPDensity
  • Label: LiveSPDensity
  • Definition: Density of live Spartina patens stems (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
DeadSPDensity
  • Label: DeadSPDensity
  • Definition: Density of dead Spartina patens stems (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
LiveSSADensity
  • Label: LiveSSADensity
  • Definition: Density of live short Spartina alterniflora stems (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
DeadSSADensity
  • Label: DeadSSADensity
  • Definition: Density of dead short Spartina alterniflora stems (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
LiveTSADensity
  • Label: LiveTSADensity
  • Definition: Density of live tall Spartina alterniflora stems (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
DeadTSADensity
  • Label: DeadTSADensity
  • Definition: Density of dead tall Spartina alterniflora stems (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
SalicorniaDensity
  • Label: SalicorniaDensity
  • Definition: Density of Salicornia (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
LiveDSDensity
  • Label: LiveDSDensity
  • Definition: Density of live Distichlis spicata (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
DeadDSDensity
  • Label: DeadDSDensity
  • Definition: Density of dead Distichdes spicata (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
TotalStemDensity
  • Label: TotalStemDensity
  • Definition: Density of totaled stems (all species) within plot (stems/m^2)
  • Type: Physical quantity
  • Unit: numberPerMeterSquared
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
Humidity
  • Label: Humidity
  • Definition: Relative Humidity at ground level of plot (%)
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
GroundTemperature
  • Label: GroundTemperature
  • Definition: Temperature at ground level of plot (°C)
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
AirTemperature
  • Label: AirTemperature
  • Definition: Temperature of air at site (°C)
  • Type: Physical quantity
  • Unit: celsius
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values:
    • NA = Data not available
Data Source Details

Header lines: 

1

Orientation: 

Column

Field delimiter: 

,

Record delimiter: 

\r\n

Number of records: 

255