Data Package Metadata View Summary

Summer water chemistry; sediment phosphorus fluxes and sorption capacity; sedimentation and sediment resuspension dynamics; water column thermal structure; and zooplankton, macroinvertebrate, and macrophyte communities in eight shallow lakes in northwest Iowa, USA (2018-2020)

General Information

Data Package:

Local Identifier:

edi.1251.2

Title:

Summer water chemistry; sediment phosphorus fluxes and sorption capacity; sedimentation and sediment resuspension dynamics; water column thermal structure; and zooplankton, macroinvertebrate, and macrophyte communities in eight shallow lakes in northwest Iowa, USA (2018-2020)

Alternate Identifier:

DOI PLACE HOLDER

Abstract:

The primary aim of this data product is to characterize change in water chemistry, sediment-water interactions, and biological communities in shallow, eutrophic lakes undergoing a fishery biomanipulation. We studied eight glacial lakes located in northwest Iowa, USA, from 2018 to 2020 during the summer season (May to September). A subset of these lakes (n = 4; Center, Five Island, North Twin, and Silver Lakes) were part of a fishery biomanipulation in which the Iowa Department of Natural Resources (IDNR) incentivized commercial harvest of common carp (Cyprinus carpio) and bigmouth buffalo (Ictiobus cyprinellus). Harvests occurred in Center and Five Island Lakes during 2018-2019 and in North Twin and Silver Lakes during 2019-2020. Between 73 and 373 kg fish biomass per ha were removed each year. The other study lakes (n = 4; Blue, South Twin, Storm, and Swan Lakes) remained unmanipulated during the study period. Over the course of the biomanipulation, we quantified a suite of physical, chemical, and biological parameters across the study lakes. High frequency aquatic sensors were used to measure water column thermal structure, dissolved oxygen concentrations, and algal pigments. Manual water chemistry sampling further quantified suspended solids, total phosphorus and nitrogen, soluble reactive phosphorus, nitrate, and water clarity. We measured flux rates of phosphorus between bottom sediments and the overlying water using ex situ sediment core incubations under both oxic and anoxic conditions. We further quantified sediment phosphorus sorption capacity using equilibrium phosphorus concentration assays. Tiered sediment traps were used to measure sedimentation rates as well as sediment resuspension in bottom waters. We also measured change in zooplankton, macroinvertebrate, and macrophyte community composition and abundance. These data will be used to better understand the mechanisms of internal phosphorus loading in shallow lakes and the ecosystem effects of fisheries biomanipulations. This knowledge will inform local management and lake restoration activities as well as a broader understanding of shallow lakes and organism-ecosystem interactions.

Publication Date:

2022-11-03

For more information:
Visit:	DOI PLACE HOLDER

Time Period

Begin:

2018-05-15

End:

2020-09-15

People and Organizations
Contact:	Wilkinson, Grace M (University of Wisconsin-Madison) [ email ]
Contact:	Balmer, Michelle (Iowa Department of Natural Resources) [ email ]
Creator:	Albright, Ellen A (University of Wisconsin-Madison)
Creator:	Wilkinson, Grace M (University of Wisconsin-Madison)
Creator:	Butts, Tyler J (University of Wisconsin-Madison)
Creator:	Shingai, Quin K (Dartmouth College)
Associate:	Antoniou, George (Iowa Department of Natural Resources, Funding Agency Scientist)
Associate:	Fleck King, Rachel (Iowa State University, Laboratory Manager)
Associate:	Weber, Michael (Iowa State University, Collaborator)
Associate:	Simpson, Martin (Iowa State University, Collaborator)
Associate:	Rasmusson, Jenna
Associate:	Amos, Psalm (Iowa State University, Undergraduate Student Technician)
Associate:	Barbour, Riley
Associate:	Johnson, Robert (University of Wisconsin-Madison, Data Cleaning Consultant)

Data Entities
Data Table Name:	Carp lakes water chemistry data, 2018-2020
Description:	The data table contains the summer water column total phosphorus, soluble reactive phosphorus, total nitrogen, nitrate, suspended solids, chlorophyll-a, and phycocyanin concentrations as well as Secchi depth for 8 lakes in northwest Iowa, USA. These data were compiled from research conducted by the Iowa State University Limnology Laboratory and two Iowa DNR monitoring programs, the Ambient Lakes and Shallow Lakes Monitoring Programs. These data were compiled and QAQC-ed by Ellen Albright and Grace Wilkinson.
Data Table Name:	Carp lakes high frequency temperature profiles, 2018-2019
Description:	The data table contains high frequency water temperature measurements from several discrete depths throught the water column of the deep site of 6 study lakes (Center, Five Island, North Twin, Silver, South Twin, and Swan Lakes) in order to capture thermal stratification and mixing events during the sumemrs of 2018 and 2019. These data were compiled and QAQC-ed by Ellen Albright.
Data Table Name:	Carp lakes high frequency dissolved oxygen data, 2018-2019
Description:	The data table contains high frequency dissolved oxygen concentrations and water temperature measurements from surface and bottom waters at the deep sites of 4 study lakes (Center, Five Island, North Twin, and South Twin Lakes) during the summers of 2018 and 2019. These data were compiled and QAQC-ed by Ellen Albright.
Data Table Name:	South Twin Lake high frequency water quality data, 2018-2019
Description:	The data table contains high frequency measurements of chlorophyll-a, phycocyanin, and dissolved oxygen concentrations; dissolved oxygen saturation, water temperature, pH, specific conductivity, and total dissolved solids in the surface waters of South Twin Lake during the summers of 2018 and 2019. These data were compiled and QAQC-ed by Ellen Albright and Robert Johnson.
Data Table Name:	Swan Lake high frequency water quality data, 2018
Description:	The data table contains high frequency measurements of chlorophyll-a, phycocyanin, and dissolved oxygen concentrations; dissolved oxygen saturation, water temperature, pH, specific conductivity, and total dissolved solids in the surface waters of Swan Lake during the summer of 2018. These data were compiled and QAQC-ed by Ellen Albright.
Data Table Name:	Carp lakes zooplankton community composition and biomass data, 2018-2020
Description:	The data table details zooplankton community composition and biomass concentrations for 7 study lakes (Blue, Center, Five Island, North Twin, Silver, Storm, and South Twin Lakes). Zooplankton were sampled at the deepest point of each lake throughout the summers of 2018-2020. Organisms were identified to genus for cladocerans and rotiers, order for copepods, and class for ostracods. These data were compiled from research conducted by the Iowa State University Limnology Laboratory and the IDNR Ambient Lakes Monitoring Program. These data were compiled and QAQC-ed by Tyler Butts.
Data Table Name:	Carp lakes benthic macroinvertebrate community composition and density data, 2018-2020
Description:	The data table details benthic macroinvertebrate community composition and density for 7 study lakes (Blue, Center, Five Island, North Twin, Silver, Storm, and South Twin Lakes). Macroinvertebrates were sampled at 10 sites across each lake in the summers of 2018-2020. Organisms were identified to either family or order. These data were compiled and QAQC-ed by Tyler Butts.
Data Table Name:	Carp lakes macrophyte community composition and spatial coverage, 2018-2020
Description:	The data table details macrophyte community composition and spatial coverage for 6 study lakes (Center, Five Island, North Twin, Silver, Storm, and South Twin Lakes). Macrophytes were sampled along 15-25 transects per lake in the summers of 2018-2020. Organisms were identified to either genus or species. These data were hand-entered and QAQC-ed by Ellen Albright.
Data Table Name:	Summary of carp lakes macrophyte species richness and community assembly, 2018-2020
Description:	The data table provides a lake-level summary of macrophyte species richness and community composition for each year of sampling (2018-2020) for 6 study lakes (Center, Five Island, North Twin, Silver, Storm, and South Twin Lakes). These data were summarized by Ellen Albright.
Data Table Name:	Raw sediment core incubation data, 2019
Description:	This data table contains the raw data for sediment core incubation experiments for North and South Twin Lakes and Swan Lake, during the summer of 2019. Sediments were incubated under both oxic and anoxic conditions, and change in phosphorus in the overlying water was monitored over 5 days. These data were hand-entered and QAQC-ed by Ellen Albright. This data table is meant to be used for further calculations.
Data Table Name:	Clean and calculated sediment core incubation data, 2019
Description:	This data table contains the output of the cleaning script to calculate daily sediment phosphorus flux rates for sediment core incubation experiments for North and South Twin Lakes and Swan Lake, during the summer of 2019, under oxic and anoxic conditions. These data were calculated by Ellen Albright.
Data Table Name:	Summary of calculated sediment phosphorus flux rates, 2019
Description:	This data table contains the output of the cleaning script to calculate the average daily sediment phosphorus flux rates for sediment core incubation experiments for North and South Twin Lakes and Swan Lake, during the summer of 2019, under oxic and anoxic conditions. Values were averaged across temporal replicates for each unique sediment core over the course of each incubation experiment. These data were calculated by Ellen Albright.
Data Table Name:	Raw equilibrium phosphorus concentration assay results, 2018
Description:	This data table contains the raw data from equilibrium phosphorus concentration (EPC) assays from July of 2018 for 7 study lakes (Center, Five Island, North Twin, Silver, Storm, South Twin, and Swan Lakes). These data were hand-entered and QAQC-ed by Ellen Albright. This data table is meant to be used for further calculations.
Data Table Name:	Calculated equilibrium phosphorus concentrations, 2018
Description:	This data table contains the equilibrium phosphorus concentration values from July 2018 for 7 study lakes (Center, Five Island, North Twin, Silver, Storm, South Twin, and Swan Lakes). These data were calculated by Ellen Albright.
Data Table Name:	Suspended solids data from tiered sediment traps, 2018-2019
Description:	This data table contains total, volatile, and involatile suspended solids concentrations collected in tiered sediment traps in 7 study lakes (Center, Five Island, North Twin, Silver, Storm, South Twin, and Swan Lakes) in the summers of 2018 and 2019. Differences between top and bottom traps can be used to quanitfy sedimentation fluxes and sediment resuspension fluxes. These data were hand-entered and QAQC-ed by Ellen Albright.
Other Name:	Carp_Sensors_QAQC
Description:	A script to combine EXO sensor files and visualize all of the high frequency sensor data for quality assurance purposes
Other Name:	Carp_Incubations_2019_Calculations
Description:	Calculations to determine daily sediment P flux rates
Other Name:	Carp_EPC_2018_Calculations
Description:	Calculations to determine equilibrium phosphorus concentrations from raw data sheet

Detailed Metadata

Data Entities

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1251/2/22a1c209f19f303271ddab8aaa70402d
Name:	Carp lakes water chemistry data, 2018-2020
Description:	The data table contains the summer water column total phosphorus, soluble reactive phosphorus, total nitrogen, nitrate, suspended solids, chlorophyll-a, and phycocyanin concentrations as well as Secchi depth for 8 lakes in northwest Iowa, USA. These data were compiled from research conducted by the Iowa State University Limnology Laboratory and two Iowa DNR monitoring programs, the Ambient Lakes and Shallow Lakes Monitoring Programs. These data were compiled and QAQC-ed by Ellen Albright and Grace Wilkinson.
Number of Records:	283
Number of Columns:	29

Table Structure

Object Name:

1_Carp_WQ_2018-2020.csv

Size:

34130 byte

Authentication:

87daa3edbc4fa90685d2c770e00143da Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

year

sample_id

zoop_id

program

lake_name

lake_id

depth

doy

year_frac

secchi_m

secchi_flag

tss_mgL

tss_flag

vss_mgL

vss_flag

iss_mgL

iss_flag

tp_ugL

tp_flag

srp_ugL

srp_flag

tn_mgL

tn_flag

nox_mgL

nox_flag

chl_ugL

chl_flag

phyco_ugL

phyco_flag

Column Name:

year

sample_id

zoop_id

program

lake_name

lake_id

depth

doy

year_frac

secchi_m

secchi_flag

tss_mgL

tss_flag

vss_mgL

vss_flag

iss_mgL

iss_flag

tp_ugL

tp_flag

srp_ugL

srp_flag

tn_mgL

tn_flag

nox_mgL

nox_flag

chl_ugL

chl_flag

phyco_ugL

phyco_flag

Definition:

Sampling year (2018, 2019, 2020)

Unique sample identifier for the ISU Limnology Lab database

Sample identifier for corresponding zooplankton tow taken on the sample sampling day

Monitoring project responsible for data collection

Lake name

Unique lake identifier for the ISU Limnology Lab database

Identifier for water depth at which samples were collected

Julian day of year when water samples were collected

Sampling date given as the fraction of the year

Secchi depth

Data flag for Secchi depth

Total suspended solids concentration

Data flag for total suspended solids

Volatile suspended solids concentration

Data flag for volatile suspended solids

Involatile suspended solids concentration

Data flag for involatile suspended solids

Concentration of total phosphorus

Data flag for total phosphorus

Concentration of soluble reactive phosphorus

Data flag for soluble reactive phosphorus

Total nitrogen concentration

Data flag for total nitrogen

Nitrate concentration

Data flag for nitrate

Chlorophyll-a concentration

Data flag for chlorophyll-a

Phycocyanin concentration

Data flag for phycocyanin

Storage Type:

dateTime

string

float

string

float

string

float

string

float

string

float

string

float

string

float

string

float

string

float

string

float

string

Measurement Type:

dateTime

nominal

ratio

nominal

ratio

nominal

ratio

nominal

ratio

nominal

ratio

nominal

ratio

nominal

ratio

nominal

ratio

nominal

ratio

nominal

ratio

nominal

Measurement Values Domain:

Format	YYYY
Precision

Definition

Unique sample identifier for the ISU Limnology Lab database

Definition

Sample identifier for corresponding zooplankton tow taken on the sample sampling day

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	ALM
Definition	Ambient Lakes Monitoring Program (Iowa DNR)
Source

Code Definition

Code	Carp
Definition	Intensive monitoring by Iowa State University Limnology Lab, lakes with incentivized carp harvest
Source

Code Definition

Code	ShallowLakes
Definition	Iowa DNR monitoring for shallow waters
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Blue
Definition	Blue Lake
Source

Code Definition

Code	Center
Definition	Center Lake
Source

Code Definition

Code	Five Island
Definition	Five Island Lake
Source

Code Definition

Code	North Twin
Definition	North Twin Lake
Source

Code Definition

Code	Silver
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	South Twin
Definition	South Twin Lake
Source

Code Definition

Code	Storm
Definition	Storm Lake
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	12
Definition	Blue Lake
Source

Code Definition

Code	19
Definition	Center Lake
Source

Code Definition

Code	36
Definition	Five Island Lake
Source

Code Definition

Code	90
Definition	North Twin Lake
Source

Code Definition

Code	105
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	113
Definition	Storm Lake
Source

Code Definition

Code	406
Definition	South Twin Lake
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Epi
Definition	(epilimnion) grab sample from the mixed surface layer, 0.25 from the water surface
Source

Code Definition

Code	Hypo
Definition	(hypolimnion) Van Dorn sample from 0.5 meters above the sediment-water interface
Source

Unit	Julian Day of Year
Type	integer

Unit	Fraction of year
Type	real

Unit	meter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	m
Definition	No sample collected
Source

Unit	milligramPerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	a
Definition	concentration below instrument detection limit, value set to zero
Source

Code Definition

Code	m
Definition	no sample collected
Source

Unit	milligramPerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	a
Definition	concentration below instrument detection limit, value set to zero
Source

Code Definition

Code	m
Definition	no sample collected
Source

Unit	milligramPerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	a
Definition	concentration below instrument detection limit, value set to zero
Source

Code Definition

Code	m
Definition	no sample collected
Source

Unit	microgramPerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	m
Definition	No sample collected
Source

Unit	microgramPerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	a
Definition	concentration below instrument detection limit, value set to zero
Source

Unit	milligramPerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	a
Definition	concentration below instrument detection limit, value set to zero
Source

Code Definition

Code	m
Definition	no sample collected
Source

Unit	milligramPerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	a
Definition	concentration below instrument detection limit, value set to detection limit
Source

Code Definition

Code	m
Definition	no sample collected
Source

Unit	microgramPerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	a
Definition	concentration below instrument detection limit, value set to detection limit
Source

Code Definition

Code	m
Definition	no sample collected
Source

Unit	microgramPerLiter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	nan
Definition	No data flag
Source

Code Definition

Code	a
Definition	concentration below instrument detection limit, value set to detection limit
Source

Code Definition

Code	m
Definition	no sample collected
Source

Missing Value Code:

Code	NA
Expl	Measurement was not taken

Code	NA
Expl	Measurement was not taken

Code	NA
Expl	Measurement was not taken

Code	NA
Expl	Measurement was not taken

Code	NA
Expl	Measurement was not taken

Code	NA
Expl	Measurement was not taken

Code	NA
Expl	Measurement was not taken

Code	NA
Expl	Measurement was not taken

Code	NA
Expl	Measurement was not taken

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1251/2/d6409ac14a7f593e71911bf863ea7414
Name:	Carp lakes high frequency temperature profiles, 2018-2019
Description:	The data table contains high frequency water temperature measurements from several discrete depths throught the water column of the deep site of 6 study lakes (Center, Five Island, North Twin, Silver, South Twin, and Swan Lakes) in order to capture thermal stratification and mixing events during the sumemrs of 2018 and 2019. These data were compiled and QAQC-ed by Ellen Albright.
Number of Records:	273930
Number of Columns:	8

Table Structure

Object Name:

2_Carp_Temp_2018-19.csv

Size:

17307540 byte

Authentication:

6053e55ebfc7bc03616db1e043af5ed3 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

year

lake_name

lake_id

datetime

doy

doy_frac

depth_m

temp_c

Column Name:

year

lake_name

lake_id

datetime

doy

doy_frac

depth_m

temp_c

Definition:

Sampling year (2018, 2019)

Lake name

Unique lake identifier for the ISU Limnology Lab database

Date and timestamp when temperature sensor took a measurement. HOBO Pendant temperature logger.

Julian day of year when temperature sensor took a measurement

Fractional Julian day of year (to show time of day) when temperature sensor took a measurement

Water depth where temperature sensor was placed (distance from water surface to sensor)

Water temperature

Storage Type:

dateTime

string

dateTime

float

Measurement Type:

dateTime

nominal

dateTime

ratio

Measurement Values Domain:

Format	YYYY
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Center
Definition	Center Lake
Source

Code Definition

Code	Five Island
Definition	Five Island Lake
Source

Code Definition

Code	North Twin
Definition	North Twin Lake
Source

Code Definition

Code	Silver
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	South Twin
Definition	South Twin Lake
Source

Code Definition

Code	Swan
Definition	Swan Lake
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	19
Definition	Center Lake
Source

Code Definition

Code	36
Definition	Five Island Lake
Source

Code Definition

Code	90
Definition	North Twin Lake
Source

Code Definition

Code	105
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	114
Definition	Swan Lake
Source

Code Definition

Code	406
Definition	South Twin Lake
Source

Format	YYYY-MM-DD hh:mm:ss
Precision

Unit	Julian Day of Year
Type	integer

Unit	Julian Day of Year, fractional
Type	real

Unit	meter
Type	real

Unit	celsius
Type	real

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1251/2/4b434a0505041a550de19b039065a4be
Name:	Carp lakes high frequency dissolved oxygen data, 2018-2019
Description:	The data table contains high frequency dissolved oxygen concentrations and water temperature measurements from surface and bottom waters at the deep sites of 4 study lakes (Center, Five Island, North Twin, and South Twin Lakes) during the summers of 2018 and 2019. These data were compiled and QAQC-ed by Ellen Albright.
Number of Records:	45923
Number of Columns:	9

Table Structure

Object Name:

3_Carp_DO_2018-19.csv

Size:

3187858 byte

Authentication:

d581e5277533c60d653882348a8fd890 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

year

lake_name

lake_id

depth_m

datetime

doy

doy_frac

DO_mgL

temp_c

Column Name:

year

lake_name

lake_id

depth_m

datetime

doy

doy_frac

DO_mgL

temp_c

Definition:

Sampling year (2018, 2019)

Lake name

Unique lake identifier for the ISU Limnology Lab database

Water depth where dissolved oxygen sensor was placed (distance from water surface to sensor). A value of 0 indicates a sensor placed just below the lake surface.

Date and timestamp when temperature sensor took a measurement. HOBO Pendant temperature logger.

Julian day of year when temperature sensor took a measurement

Fractional Julian day of year (to show time of day) when temperature sensor took a measurement

Dissolved oxygen concentration

Water temperature

Storage Type:

dateTime

string

float

dateTime

float

Measurement Type:

dateTime

nominal

ratio

dateTime

ratio

Measurement Values Domain:

Format	YYYY
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Center
Definition	Center Lake
Source

Code Definition

Code	Five Island
Definition	Five Island Lake
Source

Code Definition

Code	North Twin
Definition	North Twin Lake
Source

Code Definition

Code	South Twin
Definition	South Twin Lake
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	19
Definition	Center Lake
Source

Code Definition

Code	36
Definition	Five Island Lake
Source

Code Definition

Code	90
Definition	North Twin Lake
Source

Code Definition

Code	406
Definition	South Twin Lake
Source

Unit	meter
Type	real

Format	YYYY-MM-DD hh:mm:ss
Precision

Unit	Julian Day of Year
Type	integer

Unit	Julian Day of Year, fractional
Type	real

Unit	milligramPerLiter
Type	real

Unit	celsius
Type	real

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1251/2/685bd952f497089978db7dec2a6a9ca7
Name:	South Twin Lake high frequency water quality data, 2018-2019
Description:	The data table contains high frequency measurements of chlorophyll-a, phycocyanin, and dissolved oxygen concentrations; dissolved oxygen saturation, water temperature, pH, specific conductivity, and total dissolved solids in the surface waters of South Twin Lake during the summers of 2018 and 2019. These data were compiled and QAQC-ed by Ellen Albright and Robert Johnson.
Number of Records:	18221
Number of Columns:	14

Table Structure

Object Name:

4_Carp_SouthTwin_EXO_2018-19.csv

Size:

1785875 byte

Authentication:

781be0fe6da683d818d06abec9122d46 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

year

lake_name

lake_id

datetime

doy

doy_frac

chla_ugL

phyco_ugL

DO_sat

DO_mgL

temp_c

SpCond_uScm

tds_mgL

Column Name:

year

lake_name

lake_id

datetime

doy

doy_frac

chla_ugL

phyco_ugL

DO_sat

DO_mgL

temp_c

SpCond_uScm

tds_mgL

Definition:

Sampling year (2018, 2019)

Lake name

Unique lake identifier for the ISU Limnology Lab database

Date and timestamp when temperature sensor took a measurement. HOBO Pendant temperature logger.

Julian day of year when temperature sensor took a measurement

Fractional Julian day of year (to show time of day) when temperature sensor took a measurement

Chlorophyll-a pigment concentration, calculated from relative fluorescence units

Phycocyanin pigment concentration, calculated from relative fluorescence units

Optical dissolved oxygen saturation

Optical dissolved oxygen concentration

Water temperature

Specific conductivity

Total dissolved solids concentration

Storage Type:

dateTime

string

dateTime

float

Measurement Type:

dateTime

nominal

dateTime

ratio

Measurement Values Domain:

Format	YYYY
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	South Twin
Definition	South Twin Lake
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	406
Definition	South Twin Lake
Source

Format	YYYY-MM-DD hh:mm:ss
Precision

Unit	Julian Day of Year
Type	integer

Unit	Julian Day of Year, fractional
Type	real

Unit	microgramPerLiter
Type	real

Unit	microgramPerLiter
Type	real

Unit	percent
Type	real

Unit	milligramPerLiter
Type	real

Unit	celsius
Type	real

Unit	pH
Type	real

Unit	micro Siemens
Type	real

Unit	milligramPerLiter
Type	real

Missing Value Code:

Code	NA
Expl	Measurement was not taken

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1251/2/8f3b631f30c4ea55ef9af85b638e4701
Name:	Swan Lake high frequency water quality data, 2018
Description:	The data table contains high frequency measurements of chlorophyll-a, phycocyanin, and dissolved oxygen concentrations; dissolved oxygen saturation, water temperature, pH, specific conductivity, and total dissolved solids in the surface waters of Swan Lake during the summer of 2018. These data were compiled and QAQC-ed by Ellen Albright.
Number of Records:	12727
Number of Columns:	14

Table Structure

Object Name:

5_Carp_Swan_EXO_2018.csv

Size:

1247024 byte

Authentication:

8f3cfb4c735edeaf560777239d2f27e1 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

year

lake_name

lake_id

datetime

doy

doy_frac

chla_ugL

phyco_ugL

DO_sat

DO_mgL

temp_c

SpCond_uScm

tds_mgL

Column Name:

year

lake_name

lake_id

datetime

doy

doy_frac

chla_ugL

phyco_ugL

DO_sat

DO_mgL

temp_c

SpCond_uScm

tds_mgL

Definition:

Sampling year (2018, 2019)

Lake name

Unique lake identifier for the ISU Limnology Lab database

Date and timestamp when temperature sensor took a measurement. HOBO Pendant temperature logger.

Julian day of year when temperature sensor took a measurement

Fractional Julian day of year (to show time of day) when temperature sensor took a measurement

Chlorophyll-a pigment concentration, calculated from relative fluorescence units

Phycocyanin pigment concentration, calculated from relative fluorescence units

Optical dissolved oxygen saturation

Optical dissolved oxygen concentration

Water temperature

Specific conductivity

Total dissolved solids concentration

Storage Type:

dateTime

string

dateTime

float

Measurement Type:

dateTime

nominal

dateTime

ratio

Measurement Values Domain:

Format	YYYY
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Swan Lake
Definition	Swan Lake
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	114
Definition	Swan Lake
Source

Format	YYYY-MM-DD hh:mm:ss
Precision

Unit	Julian Day of Year
Type	integer

Unit	Julian Day of Year, fractional
Type	real

Unit	microgramPerLiter
Type	real

Unit	microgramPerLiter
Type	real

Unit	percent
Type	real

Unit	milligramPerLiter
Type	real

Unit	celsius
Type	real

Unit	pH
Type	real

Unit	micro Siemens
Type	real

Unit	milligramPerLiter
Type	real

Missing Value Code:

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	not available

Code	NA
Expl	Measurement was not taken

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1251/2/2d33dabae2ab23b17127953cb6fbf2b3
Name:	Carp lakes zooplankton community composition and biomass data, 2018-2020
Description:	The data table details zooplankton community composition and biomass concentrations for 7 study lakes (Blue, Center, Five Island, North Twin, Silver, Storm, and South Twin Lakes). Zooplankton were sampled at the deepest point of each lake throughout the summers of 2018-2020. Organisms were identified to genus for cladocerans and rotiers, order for copepods, and class for ostracods. These data were compiled from research conducted by the Iowa State University Limnology Laboratory and the IDNR Ambient Lakes Monitoring Program. These data were compiled and QAQC-ed by Tyler Butts.
Number of Records:	5047
Number of Columns:	9

Table Structure

Object Name:

6_Carp_Zoop_2018-20.csv

Size:

308549 byte

Authentication:

3486f68cbed90d406e0e40e323e46736 Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

sample_id

year

program

lake_name

lake_id

doy

group

taxon

biomass_ugL

Column Name:

sample_id

year

program

lake_name

lake_id

doy

group

taxon

biomass_ugL

Definition:

Unique sample identifier for the ISU Limnology Lab database

Sampling year (2018, 2019, 2020)

Monitoring project responsible for data collection

Lake name

Unique lake identifier for the ISU Limnology Lab database

Julian day of year when water samples were collected

Functional grouping of zooplankton taxa

Zooplankton taxonomic grouping. Zooplankton were identified to genus for cladocerans and rotiers, order for copepods, and class for ostracods.

Biomass concentration of each zooplankton taxon found in the sample.

Storage Type:

string

dateTime

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

Unique sample identifier for the ISU Limnology Lab database

Format	YYYY
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	ALM
Definition	Ambient Lakes Monitoring Program (Iowa DNR)
Source

Code Definition

Code	Carp
Definition	Intensive Monitoring by ISU
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Blue
Definition	Blue Lake
Source

Code Definition

Code	Center
Definition	Center Lake
Source

Code Definition

Code	Five Island
Definition	Five Island Lake
Source

Code Definition

Code	North Twin
Definition	North Twin Lake
Source

Code Definition

Code	Silver
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	South Twin
Definition	South Twin Lake
Source

Code Definition

Code	Storm
Definition	Storm Lake
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	12
Definition	Blue Lake
Source

Code Definition

Code	19
Definition	Center Lake
Source

Code Definition

Code	36
Definition	Five Island Lake
Source

Code Definition

Code	90
Definition	North Twin Lake
Source

Code Definition

Code	105
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	113
Definition	Storm Lake
Source

Code Definition

Code	406
Definition	South Twin Lake
Source

Unit	Julian Day of Year
Type	integer

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Calanoid
Definition	order of copepods
Source

Code Definition

Code	Cladocera
Definition	super order of small crustaceans that include Bosmina, Daphnia, Chydorus, Ceriodaphnia, among others
Source

Code Definition

Code	Cyclopoid
Definition	order of copepods
Source

Code Definition

Code	Nauplii
Definition	early life stage copepod
Source

Code Definition

Code	Rotifer
Definition	any member of the phylum rotifera
Source

Definition

Zooplankton taxonomic grouping. Zooplankton were identified to genus for cladocerans and rotiers, order for copepods, and class for ostracods.

Unit	microgramPerLiter
Type	real

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1251/2/dec0ddb7cdade3e1b0b16301c6fb6170
Name:	Carp lakes benthic macroinvertebrate community composition and density data, 2018-2020
Description:	The data table details benthic macroinvertebrate community composition and density for 7 study lakes (Blue, Center, Five Island, North Twin, Silver, Storm, and South Twin Lakes). Macroinvertebrates were sampled at 10 sites across each lake in the summers of 2018-2020. Organisms were identified to either family or order. These data were compiled and QAQC-ed by Tyler Butts.
Number of Records:	389
Number of Columns:	12

Table Structure

Object Name:

7_Carp_Macroinverts_2018-20.csv

Size:

30320 byte

Authentication:

c11a9ba0e6e4d3eafcb98b693f34f61f Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

sample_id

year

lake_name

lake_id

doy

site_id

taxa

count

sample_area_m2

gear

combined_sites

density_count_m2

Column Name:

sample_id

year

lake_name

lake_id

doy

site_id

taxa

count

sample_area_m2

gear

combined_sites

density_count_m2

Definition:

Unique sample identifier for the ISU Limnology Lab database

Sampling year (2018, 2019, 2020)

Lake name

Unique lake identifier for the ISU Limnology Lab database

Julian day of year when water samples were collected

Unique site identifier within each lake

Macroinvertebrate identification down to family or order

Number of individuals identified

Area of Ekman (0.023) or Ponar (0.052) dredge. Combined samples include the sum of sample area

Sampling equipment used to collect macroinvertebrates

Number of sites within each lake that were combined into one sampling bucket and collated into one single sample for analysis

Number of organisms (count) per square meter (m2)

Storage Type:

string

dateTime

string

float

string

float

string

float

Measurement Type:

nominal

dateTime

nominal

ratio

nominal

ratio

nominal

ratio

Measurement Values Domain:

Definition

Unique sample identifier for the ISU Limnology Lab database

Format	YYYY
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Blue
Definition	Blue Lake
Source

Code Definition

Code	Center
Definition	Center Lake
Source

Code Definition

Code	Five Island
Definition	Five Island Lake
Source

Code Definition

Code	North Twin
Definition	North Twin Lake
Source

Code Definition

Code	Silver
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	South Twin
Definition	South Twin Lake
Source

Code Definition

Code	Storm
Definition	Storm Lake
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	12
Definition	Blue Lake
Source

Code Definition

Code	19
Definition	Center Lake
Source

Code Definition

Code	36
Definition	Five Island Lake
Source

Code Definition

Code	90
Definition	North Twin Lake
Source

Code Definition

Code	105
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	113
Definition	Storm Lake
Source

Code Definition

Code	406
Definition	South Twin Lake
Source

Unit	Julian Day of Year
Type	integer

Definition

Unique site identifier within each lake

Definition

Macroinvertebrate identification down to family or order

Unit	Count
Type	integer

Unit	meterSquared
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Ekman
Definition	Ekman dredge
Source

Code Definition

Code	Ponar
Definition	Ponar dredge
Source

Unit	Count
Type	real

Unit	Count per square meter
Type	real

Missing Value Code:

Code	NA
Expl	Multiples sites were not combined into one sample bucket

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1251/2/0b1faf7aa6ac227b86debd1b656f1a4d
Name:	Carp lakes macrophyte community composition and spatial coverage, 2018-2020
Description:	The data table details macrophyte community composition and spatial coverage for 6 study lakes (Center, Five Island, North Twin, Silver, Storm, and South Twin Lakes). Macrophytes were sampled along 15-25 transects per lake in the summers of 2018-2020. Organisms were identified to either genus or species. These data were hand-entered and QAQC-ed by Ellen Albright.
Number of Records:	1700
Number of Columns:	27

Table Structure

Object Name:

8_Carp_Macrophytes_2018-20.csv

Size:

153948 byte

Authentication:

c1a9537b62f3a847782393844581b21a Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

year

lake_name

lake_id

transect

transect_id

lat

long

depth_m

substrate

rake_total

species_richness

emergent_richness

submersed_richness

floating_richness

typha_angustifolia

sagittaria_latifolia

schenoplectus_tabernaemontani

sparganium_spp

ceratophyllum_demersum

chara_spp

najas_flexilis

potamogeton_crispus

potamogeton foliosus

potamogeton_nodosus

stuckenia_pectinata

lemna_spp

persicaria_amphibia

Column Name:

year

lake_name

lake_id

transect

transect_id

lat

long

depth_m

substrate

rake_total

species_richness

emergent_richness

submersed_richness

floating_richness

typha_angustifolia

sagittaria_latifolia

schenoplectus_tabernaemontani

sparganium_spp

ceratophyllum_demersum

chara_spp

najas_flexilis

potamogeton_crispus

potamogeton_foliosus

potamogeton_nodosus

stuckenia_pectinata

lemna_spp

persicaria_amphibia

Definition:

Sampling year (2018, 2019, 2020)

Lake name

Unique lake identifier for the ISU Limnology Lab database

Lake-level transect identifier. The total number of transects varies by lake based on surface area: Center (n=15), Five Island (n=25), North Twin (n=20), Silver (n=25), Storm (n=25), South Twin (n=25)

Unique transect identifier for ISU Limnology Lab database

Latitude value for the coordinates of the beginning of the transect

Longitude value for the coordinates of the beginning of the transect

Water depth at which the macrophyte sample was collected using a rake pull

Qualitative estimate of substrate composition at the sampling site, based on how firm the lakebed felt against the sampling rake

Qualitative assessment of macrophyte biomass at the sampling site based on visual assessments of emergent vegetation within 2 meters of the boat and sampling with a two-sided rake, lowered to the lake bottom to collect submersed and floating-leaf macrophytes from an approximately 0.4 m2 area.

Total number of macrophyte species encountered at the sampling site, either visual observation with 2 m of the boat or from a rake sample

Total number of emergent growth form macrophyte species encountered at the sampling site

Total number of submersed growth form macrophyte species encountered at the sampling site

Total number of floating-leaf growth form macrophyte species encountered at the sampling site

Presence or absence of emergent macrophyte Typha angustifolia (narrowleaf cattail)

Presence or absence of emergent macrophyte Sagittaria latifolia (broadleaf arrowhead)

Presence or absence of emergent macrophyte Schenoplectus tabernaemontain (softstem bulrush)

Presence or absence of emergent macrophyte Sparganium spp. (bur-reed, identified to genus)

Presence or absence of submersed macrophyte Ceratophyllum demersum (coontain)

Presence or absence of submersed macroalgae Chara spp. (muskgrass, identified to genus)

Presence or absence of submersed macrophyte Najas flexilis (waternymph)

Presence or absence of submersed macrophyte Potamogeton crispus (curly-leaf pondweed)

Presence or absence of submersed macrophyte Potamogeton foliosus (leafy pondweed)

Presence or absence of submersed macrophyte Potamogeton nodosus (long-leaf pondweed)

Presence or absence of submersed macrophyte Stuckenia pectinata (Sago pondweed)

Presence or absence of floating macrophyte Lemna Spp. (duckweed, identified to genus)

Presence or absence of floating macrophyte Persicaria amphibia. (water smartweed)

Storage Type:

dateTime

string

float

string

float

string

Measurement Type:

dateTime

nominal

ratio

nominal

ratio

nominal

Measurement Values Domain:

Format	YYYY
Precision

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Center
Definition	Center Lake
Source

Code Definition

Code	Five Island
Definition	Five Island Lake
Source

Code Definition

Code	North Twin
Definition	North Twin Lake
Source

Code Definition

Code	Silver
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	South Twin
Definition	South Twin Lake
Source

Code Definition

Code	Storm
Definition	Storm Lake
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	12
Definition	Blue Lake
Source

Code Definition

Code	19
Definition	Center Lake
Source

Code Definition

Code	36
Definition	Five Island Lake
Source

Code Definition

Code	90
Definition	North Twin Lake
Source

Code Definition

Code	105
Definition	Silver Lake (Dickinson County)
Source

Code Definition

Code	113
Definition	Storm Lake
Source

Code Definition

Code	406
Definition	South Twin Lake
Source

Definition

Unique transect identifier for ISU Limnology Lab database

Unit	Decimal degree
Type	real

Unit	Decimal degree
Type	real

Unit	meter
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	Muck
Definition	very soft substrate
Source

Code Definition

Code	Rock
Definition	firm substrate, but couldn’t feel significant cobble against the rake
Source

Code Definition

Code	Sand
Definition	hard substrate, could feel rocks
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	No plants on the sampling rake or in sight of the boat (within 2 m)
Source

Code Definition

Code	1
Definition	a few plants on the rake or visible within 2 m of the boat
Source

Code Definition

Code	2
Definition	enough plants to fill the rake but leave the tines visible
Source

Code Definition

Code	3
Definition	enough plants to completely fill the rake leaving no part of the metal rake head visible
Source

Unit	Count
Type	real

Unit	Count
Type	real

Unit	Count
Type	real

Unit	Count
Type	real

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Allowed Values and Definitions

Enumerated Domain

Code Definition

Code	0
Definition	Species absent at sampling site
Source

Code Definition

Code	1
Definition	Species present at sampling site
Source

Missing Value Code:

Accuracy Report:

Accuracy Assessment:

Coverage:

Methods:

Data Table


Data:	https://pasta-s.lternet.edu/package/data/eml/edi/1251/2/5822172a665573c27386e3849753f1fb
Name:	Summary of carp lakes macrophyte species richness and community assembly, 2018-2020
Description:	The data table provides a lake-level summary of macrophyte species richness and community composition for each year of sampling (2018-2020) for 6 study lakes (Center, Five Island, North Twin, Silver, Storm, and South Twin Lakes). These data were summarized by Ellen Albright.
Number of Records:	18
Number of Columns:	21

Table Structure

Object Name:

9_Carp_Macrophytes_2018-20_Summary.csv

Size:

1388 byte

Authentication:

eaa8b84aa5531e5a55b8eb8c5ef5997e Calculated By MD5

Text Format:

Number of Header Lines:

Record Delimiter:

\r\n

Orientation:

column

Simple Delimited:

Field Delimiter:	,
Quote Character:	"

Table Column Descriptions

year

lake_name

lake_id

species_richness

emergent_richness

submersed_richness

floating_richness

max_depth_m

typha_angustifolia

sagittaria_latifolia

schenoplectus_tabernaemontani

sparganium_spp

ceratophyllum_demersum

chara_spp

najas_flexilis

potamogeton_crispus

potamogeton foliosus

potamogeton_nodosus

stuckenia_pectinata

lemna_spp

persicaria_amphibia

Column Name:

year

lake_name

lake_id

species_richness

emergent_richness

submersed_richness

floating_richness

max_depth_m

typha_angustifolia

sagittaria_latifolia

schenoplectus_tabernaemontani

sparganium_spp

ceratophyllum_demersum

chara_spp

najas_flexilis

potamogeton_crispus

potamogeton_foliosus

potamogeton_nodosus

stuckenia_pectinata

Lemna_spp

persicaria_amphibia

Definition:

Sampling year (2018, 2019, 2020)

Lake name

Unique lake identifier for the ISU Limnology Lab database

Total number of macrophyte species found in the study lake for the given sampling year

Total number of emergent growth form macrophyte species found in the study lake for the given sampling year

Total number of submersed growth form macrophyte species found in the study lake for the given sampling year

Total number of floating-leaf growth form macrophyte species found in the study lake for the given sampling year

Maximum water depth of macrophyte colonization