individuals: Individual Mussel Samples, Upper Mississippi River, Lower...
In mpdougherty/mcat: Mussel Community Assessment Tool

Individual Mussel Samples, Upper Mississippi River, Lower Pool 10

1	individuals

A data frame with 1212 observations and 29 variables.

SampleID: Unique identifier for a sample to be entered, example - 200703131101. Calculated by concatenating DATE + ORG_ID + SAMPLE_NUM
Ename: Species scientific name.
Previously_Marked: Yes/No - Slash or other non-numeric mark indicating mussel was previously marked.
Marked_mussel: Yes/No - Slash or other non-numeric mark indicating mussel was relocated to that site.
Status: Designates a condition of the shell (fresh dead, weathered dead, or sub-fossil) in order to estimate how long the specimen has been dead.
Sex: Male/Female
Gravidity: Female gravid, female not gravid, female charging, male
Age: Number of annuli
Length: Maximum length in mm (anterior/posterior axis)
Height: Maximum height in mm (ventral/dorsal axis)
Voucher_Location: Where has the specimen been deposited (e.g., JFBM - James Ford Bell Museum, University of Minnesota).
Voucher_Type: How has the specimen been deposited (Wet with soft tissue preserved in ethanol or dry shell only).
ZebrasAttached: Presence or absence of Zebra mussels attached.
Comments: Comments about an individual mussel (e.g. shell highly eroded, deformed, gaping).
Northing: Latitude
Easting: Longitude
Method: Survey protocol - quantative, qualitative
NumberLive: Number of live mussels.
NUM5YEAR: Number of mussels five years of age or older.
NumZebraAttached: Total number of zebra mussels attached to the mussel categorized in four groups (0, 1-10, 11-50, >50).
PerZebraCoverage: Percent of native mussel shel cover with zebra mussels categorized in four groups (0, 1-10, 11-50, 51-100).