Dataset: TEN Leaf morphometrics

Name: Thalassia testudinum leaf morphometric measurements from experimental plots in the Western Atlantic from Summer 2018 and Winter 2019 (Tropicalization Seagrass Beds project)
Published: 2024-01-09
Keywords: seagrass, leaf morphology, western atlantic, oceans

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Spatial Extent: N:32.2639 E:-64.8307 S:9.35161 W:-97.0348

Subtropical Western Atlantic

Temporal Extent: 2018-08 - 2019-03

Project:

Collaborative Research: The tropicalization of Western Atlantic seagrass beds (Tropicalization Seagrass Beds)

Principal Investigator:

Justin Campbell (Florida International University, FIU)

Contact:

Justin Campbell (Florida International University, FIU)

BCO-DMO Data Manager:

Sawyer Newman (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2024-01-09

Restricted:

Validated:

Current State:

Preliminary and in progress

Thalassia testudinum leaf morphometric measurements from experimental plots in the Western Atlantic from Summer 2018 and Winter 2019 (Tropicalization Seagrass Beds project)

Abstract:

This dataset includes seagrass leaf morphometrics (Thalassia testudinum) from 650 experimental plots distributed across 13 sites in the Western Atlantic. Leaf morphology (average widths) were collected at two timepoints, once at the end of the 2018 summer growing season and again at the end of the 2019 winter season. Leaf width is reported as an average of all leaves across 4-6 harvested seagrass shoots in each experimental plot. Sites include: Bocas del Toro, Panama; Bonaire; Little Cayman, Cayman Islands; Carrie Bow, Belize; Puerto Morelos, Mexico; Andros, Bahamas; Eleuthera, Bahamas; Corpus Christi, Texas; Galveston, Texas; Naples, Florida; Crystal River, Florida; St. Joes, Florida; and Bermuda.

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Methods & Sampling

Sampling details

50 small seagrass plots (0.25m2, all comprised of one species, Thalassia testudinum) were established at 13 shallow sites in the Western Atlantic. Each plot was assigned to one of ten treatments comprising a factorial manipulation of caging, nutrient supply, and canopy clipping: (1) control (2) partial cage (3) full cage (4) added nutrients (5) added nutrients + partial cage (6) added nutrients + full cage (7) full cage + half canopy clip (8) full cage + full canopy clip (9) full cage + added nutrients + half canopy clip (10) full cage + added nutrients + full canopy clip. Leaf morphometrics (only leaf width) was measured at two time points (once at the end of summer 2018 and again at the end of winter 2019). The dataset reports average leaf width as measured across all leaves from 4-6 harvested seagrass shoots from each plot.

Site location details

ANDR: Andros, Bahamas (24°53'54.3" N, 77°54'25.2" W)

BERM: Bailey's Bay, Bermuda (32°15'49.9" N, 64°49'50.5" W)

BOCA: Bocas Del Toro, Panama (9°21'05.8" N, 82°15'27.8" W)

BONA: Lac Bay, Bonaire (12°06'44.3" N, 68°13'42.0" W)

CARR: Carrie Bow Cay, Belize (16°49'24.8" N, 88°06'16.2" W)

CAYM: Little Cayman, Cayman Islands (19°40'14.6" N, 80°03'21.3" W)

CORP: Corpus Christi, TX (27°55'47.9" N, 97°02'05.2" W)

CRYS: Crystal River, FL (28°42'50.4" N, 82°49'08.4" W)

ELEU: Eleuthera, Bahamas (25°27'53.5" N, 76°37'35.8" W)

GALV: Galveston, TX (29°02'41.8" N, 95°10'15.7" W)

JOES: St. Joe's Bay, FL (29°42'05.0" N, 85°19'34.6" W)

NAPL: Naples, FL (26°29'48.6" N, 82°09'40.0" W)

PUER: Puerto Morelos, Mexico (20°52'04.5" N, 86°51'35.4" W)

BCO-DMO Processing

- removed units from column headers
- converted latitude and longitude columns from degrees, minutes, seconds to decimal degrees
- latitude and longitude values rounded to 6 degrees of precision
- spaces removed from column names and replaced with underscores ("_")
- special characters removed from column names
- split the season field ("Spring 2019") into two separate fields for season ("Spring") and year ("2019")

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1737247

Deployments

None available yet

Instruments

None available yet

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
site	Site name	unitless	site
latitude	Site latitude in degrees, minutes, seconds	degrees, minutes, seconds	lat
longitude	Site longitude in degrees, minutes seconds	degrees, minutes, seconds	lon
latitude_decimal_degrees	Site latitude in decimal degrees; a positive value indicates a Northern coordinate	decimal degres	lat
longitude_decimal_degrees	Site longitude in decimal degrees; a negative value indicates a Western coordinate	decimal degrees	lon
season	Season sample collection took place	unitless	season
year	Year sample collection took place	unitless	year
plot	Plot ID number	unitless	Site_ID
clipping	Level of seagrass plot canopy clipping; no = no clipping, partial = half canopy removed, full = full canopy removed	unitless	treatment
nutrients	Level of nutrients; ambient = no added nutrients; enriched = added nutrients	unitless	treatment
cage	Level of cage; no = no cage; partial = partial 4-sided cage; full = full cage	unitless	treatment
leaf_width	Average leaf width from plot; measurement made from 4 to 6 randomly selected shoots	millmeters (mm)	width

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Dataset: TEN Leaf morphometrics