Long-term Ecosystem Dynamics in Coastal Lagoons of Perdido Bay, Florida: Water Column and Benthic Metabolism (2000-present)
Metadata:
- Identification_Information:
- Citation:
- Citation_Information:
- Originator:
- DISL: Ecosystems Lab
- Publication_Date:
- Unpublished material
- Title:
- Long-term Ecosystem Dynamics in Coastal Lagoons of Perdido Bay, Florida: Water Column and Benthic Metabolism (2000-present)
- Description:
- Abstract:
- Dissolved oxygen data from field experiments conducted in three lagoonal environments in Perdido Bay, Florida, on a bimonthly basis since December 2001. For each experiment, pairs of enclosed chambers were placed over areas of either seagrass or bare sediment, where one chamber was clear acrylic and the other dark. In addition, clear and dark Biological Oxygen Demand (BOD) bottles were filled with water from mid water column. Chambers and bottles were incubated for a four-hour period including solar noon. Dissolved oxygen concentration was measured at the beginning and end of each experiment. Net primary production, respiration, and gross primary production were calculated.
- Purpose:
- To improve our understanding of lagoonal environments, and to improve our ability to create effective policies of environmentally-sustainable development and use of coastal watersheds by humans. The data are part of an ongoing survey of the physical, chemical and biological variables of three distinct lagoonal environments in Perdido Bay, Florida. The three lagoons cover a wide gradient of human pressure, from a pristine lagoon to a lagoon with a moderately developed watershed to a lagoon with a highly developed watershed, thereby allowing us to make inferences as to how human utilization of watersheds affects the health of coastal lagoons and services offered to humankind and wildlife.
- Time_Period_of_Content:
- Time_Period_Information:
- Range_of_Dates/Times:
- Beginning_Date:
- 200112
- Ending_Date:
- Present
- Currentness_Reference:
- ground condition
- Status:
- Progress:
- In work
- Maintenance_and_Update_Frequency:
- Monthly
- Spatial_Domain:
- Bounding_Coordinates:
- West_Bounding_Coordinate:
- -87.469
- East_Bounding_Coordinate:
- -87.403
- North_Bounding_Coordinate:
- 30.313
- South_Bounding_Coordinate:
- 30.305
- Keywords:
- Theme:
- Theme_Keyword_Thesaurus:
- None
- Theme_Keyword:
- dissolved oxygen concentration
- Theme_Keyword:
- water column
- Theme_Keyword:
- benthic
- Theme_Keyword:
- metabolism
- Theme_Keyword:
- coastal lagoon
- Theme_Keyword:
- water quality
- Theme_Keyword:
- bottom
- Theme_Keyword:
- mid-depth
- Theme_Keyword:
- respiration
- Theme_Keyword:
- net primary production
- Theme_Keyword:
- gross primary production
- Theme:
- Theme_Keyword_Thesaurus:
- ISO 19115 Topic Category
- Theme_Keyword:
- environment
- Theme_Keyword:
- inlandWaters
- Theme_Keyword:
- oceans
- Place:
- Place_Keyword_Thesaurus:
- None
- Place_Keyword:
- Gongora Canal
- Place_Keyword:
- State Park
- Place_Keyword:
- Kee's Bayou
- Place_Keyword:
- Perdido Bay
- Place_Keyword:
- Florida
- Place_Keyword:
- northern Gulf of Mexico
- Place_Keyword:
- Dauphin Island Sea Lab
- Place_Keyword:
- DISL
- Access_Constraints:
- Permission to access these data must be given by Dr. Just Cebrian of the Dauphin Island Sea Lab.
- Use_Constraints:
- Acknowledgment of the DISL Ecosystems Lab, the National Science Foundation (NSF), the NOAA National Coastal Data Development Center, the Mississippi-Alabama Sea Grant Consortium and the Alabama Center for Estuarine Studies is required in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of these data. Users should be aware that comparison with other data sets for the same area from other time periods may be inaccurate due to inconsistencies resulting from changes in mapping conventions, data collection, and computer processes over time. The distributor shall not be liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in the metadata document. The DISL Ecosystems Lab makes no warranty regarding these data, expressed or implied, nor does the fact of distribution constitute such a warranty. The DISL Ecosystems Lab cannot assume liability for any damages caused by any errors or omissions in these data, nor as a result of the failure of these data to function on a particular system. These data are not legal documents and are not to be used as such.
- Point_of_Contact:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person:
- Dr. Just Cebrian
- Contact_Organization:
- DISL: Ecosystems Lab
- Contact_Position:
- Principal Investigator
- Contact_Address:
- Address_Type:
- mailing and physical
- Address:
- 101 Bienville Blvd.
- City:
- Dauphin Island
- State_or_Province:
- Al
- Postal_Code:
- 36528
- Country:
- USA
- Contact_Voice_Telephone:
- 251-861-2141 ext. 7568 or 7564
- Contact_Electronic_Mail_Address:
- jcebrian@disl.org
- Hours_of_Service:
- 8-5:00 CST
- Contact_Instructions:
- Please email Dr. Just Cebrian for further information.
- Native_Data_Set_Environment:
- The working database is Microsoft Access. Data are made available via export to Microsoft Excel.
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- Data_Quality_Information:
- Logical_Consistency_Report:
- not applicable
- Completeness_Report:
- Data for this project were collected from 5 Sep 2000 to the present, however sampling techniques and data collection have not remained consistent among sampling events.
- Lineage:
- Process_Step:
- Process_Description:
- To quantify daytime benthic metabolism, we measured change in dissolved oxygen concentration within clear and dark acrylic benthic chambers incubated under ambient light conditions. The chambers were bell-shaped, with a diameter of 17.5 cm and a height of 16.0 cm, encompassing 0.032 m2 of bottom area. They were inserted into the sediment up to a pre-marked insertion point on the chamber (2.5 cm from the bottom edge) to enclose a final water volume of 3.0 l, giving the chambers a very small perimeter-to-volume ratio. Chamber volume was set in the lab prior to deployment and was viewed as a compromise between insertion depth and adequate volume to reduce chamber-wall effects. After a field trial, a set of 10 chambers was randomly sampled to assure that volume enclosed within each chamber averaged 3.0 l and did not vary with reuse.
|
On each sampling day, we haphazardly placed 10 pairs of chambers within mixed shoalgrass/widgeongrass patches and 10 pairs on bare sediment in State Park and Kee's Bayou, with each pair containing one clear and one dark chamber. Ten pairs of chambers were placed on each sampling date on the bare sediment of Gongora. To capture the gradient in sediment nature found in the lagoon, the pairs were placed haphazardly at locations regularly distributed from the mouth to the upstream end. Depth of the water column at chamber placements was measured with a meter stick. We recorded the times at which we started and finished deploying the benthic chambers, which normally took approximately 1 h. These noted times, along with the total number of chamber pairs deployed, allowed us to estimate the start time of incubation for each pair of chambers.
- Process_Date:
- Not complete
- Process_Contact:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
- DISL: Ecosystems Lab
- Contact_Person:
- Josh Goff
- Contact_Position:
- research technician
- Contact_Address:
- Address_Type:
- mailing and physical
- Address:
- 101 Bienville Boulevard
- City:
- Dauphin Island
- State_or_Province:
- Alabama
- Postal_Code:
- 36528
- Contact_Voice_Telephone:
- 251-861-2141 x7564
- Contact_Electronic_Mail_Address:
- jgoff@disl.org
- Process_Step:
- Process_Description:
- In addition, we filled 5 clear and 5 dark 300 ml Biological Oxygen Demand (BOD) bottles with water from the study site while the chambers were being deployed. Water from the mid water-column (i.e. between 20 and 40 cm deep) near the first pair of chambers was collected and carefully siphoned into the bottles from the bottom to avoid any bubble formation. Immediately after filling the bottles, we measured water oxygen concentration for each bottle using a high-sensitivity field oxygen meter and recorded the time of reading. The bottles were subsequently anchored to the bottom near the first pair of chambers for incubation. The average value of these initial oxygen concentrations in the bottles was taken as the initial concentration for the chambers.
- Process_Date:
- Not complete
- Process_Contact:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
- DISL: Ecosystems Lab
- Contact_Person:
- Josh Goff
- Contact_Position:
- research technician
- Contact_Address:
- Address_Type:
- mailing and physical
- Address:
- 101 Bienville Boulevard
- City:
- Dauphin Island
- State_or_Province:
- Alabama
- Postal_Code:
- 36528
- Contact_Voice_Telephone:
- 251-861-2141 x7564
- Contact_Electronic_Mail_Address:
- jgoff@disl.org
- Process_Step:
- Process_Description:
- Chambers and bottles were incubated for approximately 4 h encompassing solar noon on sunny days in order to maximize system dynamics. At the end of the incubation period, a 60 ml sample of water was pulled out of the chamber using a syringe and attached tubing inserted through a 1 cm diameter access port. The water sample was taken at approximately mid-distance into the chamber headwater. The water was then transferred to a 60 ml BOD bottle and the oxygen concentration read with the oxygen meter and the time of reading recorded.
|
We did not stir the water within the chambers during incubation; our 60 ml water samples were taken at approximately mid-chamber in an attempt to homogenize the chamber and break gradients that could have formed during incubation. To confirm this, we took aliquots (i.e. several measurements taken within the same chamber) regularly and haphazardly. Aliquots were always very similar (i.e. within 10 to 15% of each other).
|
We also measured the oxygen concentration in the 300 ml BOD bottles at the end of the incubation period, recorded the time of the reading, and subtracted the mean change in oxygen concentration within the bottles for clear or dark bottles from the total change (i.e. integrating the bottom and enclosed headwater) measured in each clear or dark chamber in order to examine benthic processes only.
- Process_Date:
- Not complete
- Process_Contact:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
- DISL: Ecosystems Lab
- Contact_Person:
- Josh Goff
- Contact_Position:
- research technician
- Contact_Address:
- Address_Type:
- mailing and physical
- Address:
- 101 Bienville Boulevard
- City:
- Dauphin Island
- State_or_Province:
- Alabama
- Postal_Code:
- 36528
- Contact_Voice_Telephone:
- 251-861-2141 x7564
- Contact_Electronic_Mail_Address:
- jgoff@disl.org
- Process_Step:
- Process_Description:
- For each clear chamber, we calculated benthic community net production (NP, in mg C m-2 h-1) as (equation 1): NP = VC [(FC - I) /t - PC]/A. For each dark chamber, benthic community respiration (R, in mg C m-2 h-1) as (equation 2): R = VC [(FD - I) /t - PD]/A.
|
V is the volume of water enclosed in the chamber (in l), C is the conversion factor from oxygen to carbon, FC and FD are the final oxygen concentrations (mg O2 l-1) in the clear and dark chambers, I is the mean initial oxygen concentration in the chamber obtained from the bottles (mg O2 l-1), t is the incubation period (h), PC and PD are the mean changes in oxygen concentration recorded for clear and dark bottles (mg O2 l-1 h-1), and A is the area of the incubation chamber (m2).
|
These values were converted into carbon using an appropriate photosynthetic quotient and respiratory quotient. Finally, benthic community gross primary production (GPP; mg C m-2 h-1) was calculated as the difference between NP and R, which, since R is always a negative value, corresponds to GPP = NP + |R|. This approach assumes that respiration rates in the dark equal respiration rates in the light.
- Process_Date:
- Not complete
- Process_Contact:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
- DISL: Ecosystems Lab
- Contact_Person:
- Josh Goff
- Contact_Position:
- research technician
- Contact_Address:
- Address_Type:
- mailing and physical
- Address:
- 101 Bienville Boulevard
- City:
- Dauphin Island
- State_or_Province:
- Alabama
- Postal_Code:
- 36528
- Contact_Voice_Telephone:
- 251-861-2141 x7564
- Contact_Electronic_Mail_Address:
- jgoff@disl.org
Back To Index
- Entity_and_Attribute_Information:
- Detailed_Description:
- Entity_Type:
- Entity_Type_Label:
- Perdido Lagoon Metabolism
- Entity_Type_Definition:
- Dissolved oxygen data from field experiments conducted in three lagoonal environments in Perdido Bay, Florida, on a bimonthly basis since December 2001, from which net primary production, respiration, and gross primary production have been calculated. Eight spreadsheets are included: chambers, bottles, all bottle averages, bottom bottle averages, average depth, benthic metabolism, water column metabolism, total metabolism.
- Entity_Type_Definition_Source:
- DISL: Ecosystems Lab
- Attribute:
- Attribute_Label:
- timestamp or date
- Attribute_Definition:
- Month and year of sampling.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- Dec 2001
- Range_Domain_Maximum:
- present
- Attribute:
- Attribute_Label:
- site
- Attribute_Definition:
- Sampling location.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value:
- GC
- Enumerated_Domain_Value_Definition:
- Gongora Canal at latitude 30.305 N longitude 87.424 W. Residential development on northern and eastern sides (bulkheaded, in 2008 a new stretch of bulkheads was put in place), marsh on southern and western sides. Small, slightly deeper and more turbid. No seagrass. Sediment sandy (mouth) to muddy (upstream).
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Enumerated_Domain_Value:
- KB
- Enumerated_Domain_Value_Definition:
- Kees Bayou at latitude 30.313 N longitude 87.469 W. Developed on the northern and eastern sides, marsh on the southern and western sides. Bottom sediment is finer than that of State Park. Originally a small fraction was covered by patches of Halodule wrightii. Now larger mixed bed with Ruppia maritima.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Enumerated_Domain_Value:
- SP
- Enumerated_Domain_Value_Definition:
- State Park at latitude 30.308 N longitude 87.403 W. Most pristine site, entirely surrounded by salt marsh (predominantly Juncus roemerianus) and maritime forest with no human development. Bottom predominantly covered by patches of Halodule wrightii, the rest is sandy sediment.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Attribute:
- Attribute_Label:
- treatment
- Attribute_Definition:
- Type of bottom covered by the chamber during incubation.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value:
- sediment
- Enumerated_Domain_Value_Definition:
- Chamber was placed over bare sediment.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Enumerated_Domain_Value:
- grass
- Enumerated_Domain_Value_Definition:
- Chamber was placed over seagrass.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Attribute:
- Attribute_Label:
- position
- Attribute_Definition:
- Vertical position in the water column where the bottle was anchored for incubation.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value:
- surface
- Enumerated_Domain_Value_Definition:
- Bottle was floating at the water surface.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Enumerated_Domain_Value:
- bottom
- Enumerated_Domain_Value_Definition:
- Bottle was anchored at the bottom of the water column.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Attribute:
- Attribute_Label:
- replicate
- Attribute_Definition:
- Sampling replicate.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 1
- Range_Domain_Maximum:
- 10
- Attribute:
- Attribute_Label:
- chamber type
- Attribute_Definition:
- Type of benthic chamber.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value:
- dark
- Enumerated_Domain_Value_Definition:
- Chamber was made of dark acrylic.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Enumerated_Domain_Value:
- transparent
- Enumerated_Domain_Value_Definition:
- Chamber was made of clear acrylic.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Attribute:
- Attribute_Label:
- bottle type
- Attribute_Definition:
- Type of bottle.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value:
- dark
- Enumerated_Domain_Value_Definition:
- Dark BOD bottle.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Enumerated_Domain_Value:
- transparent
- Enumerated_Domain_Value_Definition:
- Clear BOD bottle.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Attribute:
- Attribute_Label:
- depth
- Attribute_Definition:
- Depth of water column where chamber was incubated, measured with a meter stick.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0
- Range_Domain_Maximum:
- 2
- Attribute_Units_of_Measure:
- meter
- Attribute:
- Attribute_Label:
- initial oxygen
- Attribute_Definition:
- Concentration of dissolved oxygen prior to incubation.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 3
- Range_Domain_Maximum:
- 13
- Attribute_Units_of_Measure:
- milligrams per liter
- Attribute:
- Attribute_Label:
- final oxygen
- Attribute_Definition:
- Concentration of dissolved oxygen after incubation.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0.5
- Range_Domain_Maximum:
- 16
- Attribute_Units_of_Measure:
- milligrams per liter
- Attribute:
- Attribute_Label:
- d(oxygen)
- Attribute_Definition:
- Change in dissolved oxygen concentration during incubation, calculated by subtracting initial from final oxygen. Negative values mean oxygen decreased during incubation.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -8
- Range_Domain_Maximum:
- 11
- Attribute_Units_of_Measure:
- milligrams per liter
- Attribute:
- Attribute_Label:
- start time
- Attribute_Definition:
- Time that incubation began.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 8
- Range_Domain_Maximum:
- 13
- Attribute_Units_of_Measure:
- Fractional hour on a 24 hour clock. U.S. Central Standard Time or Central Daylight Time, depending on time of year.
- Attribute:
- Attribute_Label:
- end time
- Attribute_Definition:
- Time that incubation ended.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 11
- Range_Domain_Maximum:
- 20
- Attribute_Units_of_Measure:
- Fractional hour on a 24 hour clock. U.S. Central Standard Time or Central Daylight Time, depending on time of year.
- Attribute:
- Attribute_Label:
- d(time)
- Attribute_Definition:
- Time elapsed during incubation.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 1.95
- Range_Domain_Maximum:
- 9.2
- Attribute_Units_of_Measure:
- hours
- Attribute:
- Attribute_Label:
- d(oxygen)/dt chamber or bottle
- Attribute_Definition:
- Change in dissolved oxygen concentration divided by elapsed time.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -2
- Range_Domain_Maximum:
- 3.5
- Attribute_Units_of_Measure:
- milligrams per liter per hour
- Attribute:
- Attribute_Label:
- d(oxygen)/dt corrected
- Attribute_Definition:
- Change in dissolved oxygen concentration divided by elapsed time. Positive values from dark chambers or bottles are changed to 0.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -2
- Range_Domain_Maximum:
- 3.5
- Attribute_Units_of_Measure:
- milligrams per liter per hour
- Attribute:
- Attribute_Label:
- flag
- Attribute_Definition:
- Data quality flag indicating whether dissolved oxygen concentration during incubation in a dark chamber or bottle was measured as an increase.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value:
- 1
- Enumerated_Domain_Value_Definition:
- Dissolved oxygen concentration during incubation in a dark chamber or bottle was measured as an increase.
- Enumerated_Domain_Value_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Measurement_Frequency:
- As needed
- Attribute:
- Attribute_Label:
- average
- Attribute_Definition:
- On the bottle averages spreadsheets: average change in dissolved oxygen concentration over time (corrected), by bottle type, site, and date. In "all bottle averages", all bottles are included; in "bottom bottle averages", only bottles anchored at the bottom are included.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -0.2
- Range_Domain_Maximum:
- 1.1
- Attribute_Units_of_Measure:
- milligrams per liter per hour
- Attribute:
- Attribute_Label:
- se
- Attribute_Definition:
- On the bottle averages spreadsheets: standard error for average change in dissolved oxygen concentration over time (corrected), by bottle type, site, and date. In "all bottle averages", all bottles are included; in "bottom bottle averages", only bottles anchored at the bottom are included.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0
- Range_Domain_Maximum:
- 0.3
- Attribute_Units_of_Measure:
- milligrams per liter per hour
- Attribute:
- Attribute_Label:
- n
- Attribute_Definition:
- On the bottle averages spreadsheets: number of bottles averaged for average change in dissolved oxygen concentration over time (corrected), by bottle type, site, and date. In "all bottle averages", all bottles are included; in "bottom bottle averages", only bottles anchored at the bottom are included.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 2
- Range_Domain_Maximum:
- 10
- Attribute:
- Attribute_Label:
- depth chambers
- Attribute_Definition:
- Average depth of water column measured near all chambers for each site and sampling date. Where depth was not measured, it was calculated as "depth environmentals" * 0.671 + 0.099.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0.2
- Range_Domain_Maximum:
- 1
- Attribute_Units_of_Measure:
- meter
- Attribute:
- Attribute_Label:
- depth environmentals
- Attribute_Definition:
- Average depth of water column measured with a meter stick at four points within the lagoon: near the mouth, near the upstream edge, and on both sides of the lagoon.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0.2
- Range_Domain_Maximum:
- 1.05
- Attribute_Units_of_Measure:
- meter
- Attribute:
- Attribute_Label:
- SEMean1
- Attribute_Definition:
- Standard error for the average depth in the previous column.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0
- Range_Domain_Maximum:
- .11
- Attribute_Units_of_Measure:
- meter
- Attribute:
- Attribute_Label:
- N1
- Attribute_Definition:
- Number of measurements averaged for the average depth.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0
- Range_Domain_Maximum:
- 40
- Attribute:
- Attribute_Label:
- average chamber dO/dt corrected (mg/l/h)
- Attribute_Definition:
- On the benthic metabolism spreadsheet: average change in dissolved oxygen concentration over time (corrected), by chamber type, treatment, site, and date.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -1.4
- Range_Domain_Maximum:
- 1.4
- Attribute_Units_of_Measure:
- milligrams per liter per hour
- Attribute:
- Attribute_Label:
- average bottom bottle dO/dt corrected (mg/l/h)
- Attribute_Definition:
- On the benthic metabolism spreadsheet: average change in dissolved oxygen concentration over time (corrected) for bottom bottles, averaged by bottle type, site, and date.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -0.2
- Range_Domain_Maximum:
- 0.6
- Attribute_Units_of_Measure:
- milligrams per liter per hour
- Attribute:
- Attribute_Label:
- average benthic metabolism (mgC/m2/h)
- Attribute_Definition:
- For transparent chambers, average benthic community net production. For dark chambers, average benthic community respiration.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -65
- Range_Domain_Maximum:
- 53
- Attribute_Units_of_Measure:
- milligrams carbon per square meter per hour
- Attribute:
- Attribute_Label:
- d(oxygen)/dt bottle corrected (mg/l/h)
- Attribute_Definition:
- On the water column metabolism spreadsheet: average change in dissolved oxygen concentration over time (corrected) for surface bottles, averaged by bottle type, site, and date.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -.232
- Range_Domain_Maximum:
- 1.097
- Attribute_Units_of_Measure:
- milligrams per liter per hour
- Attribute:
- Attribute_Label:
- metabolism (mgC/m3/h)
- Attribute_Definition:
- On the water column metabolism spreadsheet: For transparent bottles, average water column community net production. For dark bottles, average water column community respiration.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -87
- Range_Domain_Maximum:
- 378
- Attribute_Units_of_Measure:
- milligrams carbon per cubic meter per hour
- Attribute:
- Attribute_Label:
- depth water column (m)
- Attribute_Definition:
- On water column metabolism spreadsheet: average depth of water column where bottles were incubated.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0.2
- Range_Domain_Maximum:
- 1.0
- Attribute_Units_of_Measure:
- meter
- Attribute:
- Attribute_Label:
- metabolism (mgC/m2/h)
- Attribute_Definition:
- On the water column metabolism spreadsheet: For transparent bottles, average water column community net production multiplied to average water column depth. For dark bottles, average water column community respiration multiplied to average water column depth.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -54
- Range_Domain_Maximum:
- 240
- Attribute_Units_of_Measure:
- milligrams carbon per square meter per hour
- Attribute:
- Attribute_Label:
- average benthic R (mgC/m2/h)
- Attribute_Definition:
- On the total metabolism spreadsheet: average benthic respiration by date, site, and treatment.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -65
- Range_Domain_Maximum:
- 2
- Attribute_Units_of_Measure:
- milligrams carbon per square meter per hour
- Attribute:
- Attribute_Label:
- average benthic NPP (mgC/m2/h)
- Attribute_Definition:
- On the total metabolism spreadsheet: average benthic net primary production by date, site, and treatment.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -33
- Range_Domain_Maximum:
- 53
- Attribute_Units_of_Measure:
- milligrams carbon per square meter per hour
- Attribute:
- Attribute_Label:
- average benthic GPP (mgC/m2/h)
- Attribute_Definition:
- On the total metabolism spreadsheet: average benthic gross primary production by date, site, and treatment.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0
- Range_Domain_Maximum:
- 104
- Attribute_Units_of_Measure:
- milligrams carbon per square meter per hour
- Attribute:
- Attribute_Label:
- H20 R (mgC/m2/h)
- Attribute_Definition:
- On the total metabolism spreadsheet: average water column respiration (multiplied by depth) by date, site, and treatment.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -87
- Range_Domain_Maximum:
- 0
- Attribute_Units_of_Measure:
- milligrams carbon per square meter per hour
- Attribute:
- Attribute_Label:
- H20 NPP (mgC/m2/h)
- Attribute_Definition:
- On the total metabolism spreadsheet: average water column net primary production (multiplied by depth) by date, site, and treatment.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- -67
- Range_Domain_Maximum:
- 378
- Attribute_Units_of_Measure:
- milligrams carbon per square meter per hour
- Attribute:
- Attribute_Label:
- H20 GPP (mgC/m2/h)
- Attribute_Definition:
- On the total metabolism spreadsheet: average water column gross primary production (multiplied by depth) by date, site, and treatment.
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 2
- Range_Domain_Maximum:
- 462
- Attribute_Units_of_Measure:
- milligrams carbon per square meter per hour
- Attribute:
- Attribute_Label:
- H2O GPP as % of total GPP
- Attribute_Definition:
- On the total metabolism spreadsheet: average water column gross primary production divided by average water column gross primary production plus average benthic gross primary production. H2O GPP / (H2O GPP + benthic GPP).
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 11
- Range_Domain_Maximum:
- 100
- Attribute_Units_of_Measure:
- percent
- Attribute:
- Attribute_Label:
- H2O R as % of total R
- Attribute_Definition:
- On the total metabolism spreadsheet: average water column respiration divided by average water column respiration plus average benthic respiration. H2O R / (H2O R + benthic R).
- Attribute_Definition_Source:
- DISL: Ecosystems Lab
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum:
- 0
- Range_Domain_Maximum:
- 108
- Attribute_Units_of_Measure:
- percent
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- Metadata_Reference_Information:
- Metadata_Date:
- 20150611
- Metadata_Contact:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
- Dauphin Island Sea Lab
- Contact_Position:
- Data Management Specialist
- Contact_Address:
- Address_Type:
- mailing and physical
- Address:
- 101 Bienville Blvd.
- City:
- Dauphin Island
- State_or_Province:
- Al
- Postal_Code:
- 36528
- Country:
- USA
- Contact_Voice_Telephone:
- 251-861-2141
- Contact_Electronic_Mail_Address:
- metadata@disl.org
- Hours_of_Service:
- 8-5:00 CST
- Contact_Instructions:
- Please email the metadata specialist for further information.
- Metadata_Standard_Name:
- FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata
- Metadata_Standard_Version:
- FGDC-STD-001.1-1999
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