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Arctic LTER Database
Arctic LTER Database
Conditions of Use
The re-use of scientific data has the potential to greatly increase communication, collaboration and synthesis within and among disciplines, and thus is fostered, supported and encouraged. Permission to use this dataset is granted to the Data User free of charge subject to the following terms:
1) Acceptable use. Use of the dataset will be restricted to academic, research, educational, government, recreational, or other not-for-profit professional purposes. The Data User is permitted to produce and distribute derived works from this dataset provided that they are released under the same license terms as those accompanying this Data Set. Any other uses for the Data Set or its derived products will require explicit permission from the dataset owner.
2 ) Redistribution. The data are provided for use by the Data User. The metadata and this license must accompany all copies made and be available to all users of this Data Set. The Data User will not redistribute the original Data Set beyond this collaboration sphere.
3 ) Citation. It is considered a matter of professional ethics to acknowledge the work of other scientists. Thus, the Data User will properly cite the Data Set in any publications or in the metadata of any derived data products that were produced using the Data Set. Citation should take the following general form: Creator, Year of Data Publication, Title of Dataset, Publisher, Dataset identifier. For example:
Shaver, G. 1989. Above ground biomass in acidic tussock tundra experimental site, 1989, Arctic LTER, Toolik, Alaska. Arctic LTER, Marine Biological Lab, Woods Hole, Ma 02543. 1989gsttbm http://ecosystems.mbl.edu/arc/terrest/biomass/index.shtml
4 ) Acknowledgement. The Data User should acknowledge any institutional support or specific funding awards referenced in the metadata accompanying this dataset in any publications where the Data Set contributed significantly to its content. Acknowledgements should identify the supporting party, the party that received the support, and any identifying information such as grant numbers. For example:
Data sets were provided by the Arctic LTER. This material is based upon work supported by the National Science Foundation under Grants #DEB-981022, 9211775, 8702328; #OPP-9911278, 9911681, 9732281, 9615411, 9615563, 9615942, 9615949, 9400722, 9415411, 9318529; #BSR 9019055, 8806635, 8507493.
5 ) Notification. The Data User will notify the Data Set Contact when any derivative work or publication based on or derived from the Data Set is distributed. The Data User will provide the data contact with two reprints of any publications resulting from use of the Data Set and will provide copies, or on-line access to, any derived digital products. Notification will include an explanation of how the Data Set was used to produce the derived work.
6 ) Collaboration. The Data Set has been released in the spirit of open scientific collaboration. Data Users are thus strongly encouraged to consider consultation, collaboration and/or co-authorship with the Data Set Creator.
By accepting this Data Set, the Data User agrees to abide by the terms of this agreement. The Data Owner shall have the right to terminate this agreement immediately by written notice upon the Data User's breach of, or non-compliance with, any of its terms. The Data User may be held responsible for any misuse that is caused or encouraged by the Data User's failure to abide by the terms of this agreement.
Disclaimer
While substantial efforts are made to ensure the accuracy of data and documentation contained in this Data Set, complete accuracy of data and metadata cannot be guaranteed. All data and metadata are made available "as is". The Data User holds all parties involved in the production or distribution of the Data Set harmless for damages resulting from its use or interpretation.
| Dataset URLs: | METADATA: HTML, Rich Text, XML(EML compliant)
DATA: Comma Delimited, Excel file with Metadata and data |
| Dataset ID: | 2008_Chla_Kling.03 |
| Dataset Title: | Chlorophyl a Data for lakes and lake inlets/outlets samples collected summer 2008, Arctic LTER, Toolik Research Station, Alaska. |
| Investigator 1: | |
| First Name: | George | | Last Name: | Kling | | Organization: | University of Michigan | | Address line 2: | Department of Ecology and Evolutionary Biology | | Address line 3: | 830 North University | | City: | Ann Arbor | | State: | MI | | Zip Code: | 48109-1048 | | Country: | USA | | Investigator 2: | |
| First Name: | MaryAnne | | Last Name: | Evans | | Organization: | | | Address line 2: | | | Address line 3: | | | City: | | | State: | | | Zip Code: | | | Country: | | | Investigator 3: | |
| First Name: | Amanda | | Last Name: | Field | | Associate Investigators: | |
| Keywords: | phytoplankton, Chlorophyll a, phaeophytin, lake, pelagic, stream, primary production. |
| Abstract: | Yearly file containing information on Chlorophyll a determinations. Samples were collected at various sites near Toolik Research Station (68 38'N, 149 36'W). Sample site descriptors include an assigned number (sortchem), site, date, time, depth, distance, treatment, and category. Data regarding chlorophyll a and phaeopigment concentrations and parameters of sample analysis are included.
|
For questions about the Metadata and data contact the Investigators.
For information about this web site contact: |
Arctic LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7496
Email: arc_im@mbl.edu
Online URL: http://ecosystems.mbl.edu/ARC/ |
| DATA FILE INFORMATION: |
|
| Data File URL |
http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-arc.10066&urlTail=landwater/chlorophyll/data/2008_Chla_Kling.csv |
| Data File Name |
2008_Chla_Kling.dat |
| Beginning Date |
6/5/2008 |
| End Date |
8/15/2008 |
| Number of Data Records |
265 |
| Other Files to Reference |
|
| Availability Status |
|
| Quality Control Information |
|
| Maintenance Description |
|
| Log of Changes: |
Entered metadata into new metadata form. |
|
Version 2: added in the missing data indicator and changed the date format to sql friendly dd-mon-yyyy EML updated to version 2.1 Jiml 22May2012 |
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Version 3: Updated metadata form to newer version (without site sheet). CH 4Feb2013. Updated metadata to newer form (with sites sheet). CH March 2013. |
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| RESEARCH LOCATION: |
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| Location Name |
Toolik |
I1 into I3 |
I1 Outlet |
I2 into I3 |
I2 Outlet |
I3 Outlet |
I4 into I5 |
I4 Outlet |
I5 into I6 |
I5 Outlet |
I6 Headwater Lake Inlet |
I6 Headwater Lake Outlet |
I6 Inlet West |
I6 Outlet |
I7 into I9 |
I7 Outlet |
I8 Headwater |
I8 Inlet |
I8 into I9 |
I8 Outlet |
LTER 142 |
LTER 257 |
LTER 258 |
LTER 259 |
LTER 261 |
LTER 262 |
LTER 263 |
LTER 295 |
LTER 331 |
LTER 333 |
LTER 345 |
LTER 346 |
LTER 347 |
LTER 353 |
LTER 354 |
LTER 355 |
LTER 416 |
LTER 417 |
LTER 419 |
LTER 452 |
LTER 453 |
LTER 458 |
LTER 459 |
LTER 460 |
LTER 461 |
LTER 462 |
LTER 463 |
LTER 464 |
LTER 465 |
LTER 466 |
LTER 472 |
LTER 473 |
LTER 474 |
LTER 478 |
LTER 479 |
LTER 480 |
Milake |
Milake into NE 14 |
Milkyway Lower |
Milkyway Upper |
NE 14 Lake |
NE 14 Lake Slump Inlet |
NE 14 Outlet |
I swamp inlet |
I swamp outlet |
Toolik |
Toolik Camp Shoal |
Toolik Central |
Toolik Dock |
Toolik Inlet |
Toolik Inlet Bay |
Toolik Limno Bay |
Toolik Morraine |
Toolik Outlet Bay |
Toolik Rock Shoal |
Toolik Sauna Shoal |
Toolik Southwest Basin |
Yurlake into NE 14 |
|
| Geographic Description |
Toolik Lake and vicinity. See http://ecosystems.mbl.edu/arc/landwater/lw_sitedescript.html |
I1 into I3 |
I1 Outlet |
I2 into I3 |
I2 Outlet |
I3 Outlet |
I4 into I5 |
I4 Outlet |
I5 into I6 |
I5 Outlet |
I6 Headwater Lake Inlet |
I6 Headwater Lake Outlet |
I6 Inlet West |
I6 Outlet |
I7 into I9 |
I7 Outlet |
I8 Headwaters |
I8 Inlet |
I8 into I9 |
I8 Outlet |
Green Cabin Lake |
LTER 257 |
LTER 258 |
LTER 259 |
LTER 261 |
LTER 262 |
LTER 263 |
LTER 295 |
LTER 331 |
LTER 333 |
LTER 345 |
LTER 346 |
LTER 347 |
LTER 353 |
LTER 354 |
LTER 355 |
LTER 416 |
LTER 417 |
LTER 419 |
LTER 452 |
LTER 453 |
LTER 458 |
LTER 459 |
LTER 460 |
LTER 461 |
LTER 462 |
LTER 463 |
LTER 464 |
LTER 465 |
LTER 466 |
LTER 472 |
LTER 473 |
LTER 474 |
LTER 478 |
LTER 479 |
LTER 480 |
Surveyed by Kling, Crump, Nannen in 2010 |
Milake into NE 14 |
Milkyway Lower |
Milkyway Upper |
This site is near the NE 14 Lake Slump Inlet and is different than the NE 14 site (which is out in the lake). |
NE 14 Lake Slump Inlet |
NE 14 Outlet |
Swamp between I8 an I9 |
I swamp outlet |
Toolik Lake Main Station |
Surveyed by Sarah Barbrow in 2009, Kling,Cory,Nannen, and Crump in 2010. |
Surveyed by Sarah Barbrow in 2009, Kling,Cory,Nannen, and Crump in 2010. |
Surveyed by Sarah Barbrow in 2009, Kling,Cory,Nannen, and Crump in 2010. |
Toolik Inlet |
Surveyed by Sarah Barbrow in 2009, Kling,Cory,Nannen, and Crump in 2010. |
Western bay of Toolik where limno corral experiments were done in the 1980s |
Surveyed by Sarah Barbrow in 2009, Kling,Cory,Nannen, and Crump in 2010. |
Surveyed by Sarah Barbrow in 2009, Kling,Cory,Nannen, and Crump in 2010. |
Surveyed by Sarah Barbrow in 2009, Kling,Cory,Nannen, and Crump in 2010. |
Surveyed by Sarah Barbrow in 2009, Kling,Cory,Nannen, and Crump in 2010. |
Surveyed by Sarah Barbrow in 2009, Kling,Cory,Nannen, and Crump in 2010. |
Yurlake into NE 14 |
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| Location Bounding Box |
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| West Bounding Coordinate |
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| East Bounding Coordinate |
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| North Bounding Coordinate |
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| South Bounding Coordinate |
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| OR if single point location |
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| Latitude |
68.6256 |
68.574 |
68.572296 |
68.57478333 |
68.572546 |
68.57754 |
68.58423333 |
68.58143 |
68.59491667 |
68.589087 |
68.578643 |
68.58357 |
68.59688333 |
68.598684 |
68.61818333 |
68.60183 |
68.6114075339 |
68.60853333 |
68.61838333 |
68.6114075339 |
68.5369815304 |
68.7016666666667 |
68.705 |
68.7033333333333 |
68.70798 |
68.70785 |
68.81046 |
68.82153 |
68.53405 |
68.53327 |
68.62276 |
68.62538 |
68.62538 |
68.585 |
68.5833333333333 |
68.5896775 |
68.49592 |
68.49113 |
68.48625 |
68.79496 |
68.81046 |
68.98633 |
68.98353 |
68.97871 |
68.86175 |
68.86755 |
68.87315 |
68.79372 |
68.79622 |
68.79825 |
68.82806 |
68.8264 |
68.82735 |
68.51007 |
68.50508 |
68.50245 |
68.672935 |
68.673757 |
68.622 |
68.62016667 |
68.674932 |
68.677723 |
68.674122 |
68.61035 |
68.611683 |
68.629961 |
68.626672 |
68.632586 |
68.63639 |
68.6256 |
68.625966 |
68.638624 |
68.633232 |
68.639895 |
68.634241 |
68.628656 |
68.633064 |
68.67415 |
|
| Longitude |
-149.59605 |
-149.583566 |
-149.581014 |
-149.58205 |
-149.570268 |
-149.582003 |
-149.5836 |
-149.5861 |
-149.586316 |
-149.589219 |
-149.621102 |
-149.62384 |
-149.60125 |
-149.599853 |
-149.596766 |
-149.596713 |
-149.590131872 |
-149.587633 |
-149.5965 |
-149.590131872 |
-149.237402817 |
-149.743333333333 |
-149.731666666667 |
-149.715 |
-149.7151 |
-149.69963 |
-149.05208 |
-149.05867 |
-149.1573 |
-149.19565 |
-149.15088 |
-149.13919 |
-149.13919 |
-149.196666666667 |
-149.188333333333 |
-149.181537333333 |
-149.60205 |
-149.60796 |
-149.62469 |
-149.04814 |
-149.05208 |
-149.89803 |
-149.89436 |
-149.89182 |
-149.03908 |
-149.03557 |
-149.04128 |
-149.47561 |
-149.48222 |
-149.47832 |
-149.76449 |
-149.7585 |
-149.74993 |
-149.62691 |
-149.62767 |
-149.63137 |
-149.617523 |
-149.618268 |
-149.590666 |
-149.568166 |
-149.625439 |
-149.624028 |
-149.62885 |
-149.599766 |
-149.599254 |
-149.612633 |
-149.597844 |
-149.600895 |
-149.594774 |
-149.59605 |
-149.599022 |
-149.610737 |
-149.61149 |
-149.596106 |
-149.602759 |
-149.599606 |
-149.62827 |
-149.618103 |
|
| Elevation |
719 |
774 |
785 |
774 |
785 |
774 |
770 |
770 |
754 |
767 |
808 |
808 |
754 |
754 |
728 |
742 |
808 |
744 |
728 |
744 |
In Meters |
760 |
730 |
690 |
650 |
650 |
650 |
518 |
926 |
899 |
861 |
877 |
858 |
898 |
896 |
880 |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
In Meters |
708 |
701 |
725 |
739 |
701 |
701 |
701 |
736 |
736 |
719 |
719 |
719 |
719 |
719 |
719 |
719 |
719 |
719 |
719 |
719 |
719 |
701 |
|
| Link to Google Map |
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| TAXONOMIC COVERAGE: |
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| Organisms studied |
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| |
| Methods: | In addition to the link above, the chlorophyll protocol is available in the Land-Water protocol accessible from the Land-Water main page on the Arctic LTER web page or at http://www-personal.umich.edu/~gwk and clicking on the protocol link at the bottom of the page.
This method is adapted from EPA Method 445.0, Arar, J and G. B. Collins. In Vitro Determination of Chl a and Pheo a in Marine and Freshwater Algae by Fluorescence. Revision 1.9, 1997.
In brief, sample water is filtered through Whatman GF/F 25 mm or 47 mm (0.7um pore) glass fiber filters. Filters are frozen for preservation at -80 C for a period of 24 hours to two weeks. Chl a is then extracted by submersing filters in 90% acetone buffered with MgCO3 for a 24 hour incubation period. Extracted chlorophyll samples are then read on a Turner Designs10-AU Fluorometer before and after acidification with 100uL 0.1N HCl.
Note: Acidified and non-acidified sample readings are used to calculate phaeophytin concentrations and correct chlorophyll a values. This acidification technique was originally tested during part of the 2000 sample season and has been used consistently for chlorophyll a analysis by the Landwater Group from 2002 to present. Methodology was formally adopted by the LTER (including the Lakes Group) in 2004.
|
Data Table
| Variable Name |
Variable Description |
Data Type |
Units |
DateTime Format |
Code Information |
Missing Value Code |
| SortChem |
Yearly number assigned to samples collected at a specific site at a specific date and time. The year that the sample was collected is followed by a dash and then a sequential number. For example, if 600 samples were collected in 2002, then the first sample collected is 2002-0001 and the last sample is 2002-0600. |
text |
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| Site |
Site Name. If a soil site, the site is described in the name by general location then specific feature (watertrack,etc) then specific point (1,2,3,...). If a lake or streams site, the lake or stream name (as it is commonly known) is given. Exceptions in naming procedure are provided in the Code Information. |
text |
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|
TW=Tussock Watershed| WT=Watertrack| RE=Rain Event| I=I series lakes and inlets/outlets |
|
| Date |
Sampling Date |
datetime |
|
dd-mon-yy |
|
. |
| Time_hr_dst |
Sampling Time in Alaska Daylight Savings Time (1 hour ahead of Alaska Standard Time: if 13:00 DST than 12:00 AST) |
datetime |
|
hh:mm |
|
. |
| Depth_m |
Depth from surface of lake, stream, or soil |
number |
meter |
|
|
. |
| Chla_Phaeophytin_Corrected_ugL |
Fluorescence estimate of Chlorophyll a corrected for phaeopigment (phaeophytin). This acidification method was started in 1999, and applied to all samples in this spreadsheet (landwater) by 2000. Note that the lakes Arcitc LTER group started this method |
number |
microgramPerLiter |
|
|
. |
| Phaeopigment_ugL |
Fluorescence estimate of Phaeopigment estimated by acidification of a chlorophyll sample. |
number |
microgramPerLiter |
|
|
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| Chla_Raw_ugL |
Fluorescence estimate of Chlorophyll a without a phaeopigment correction (no acidification). This was this historical measure use by the Arctic LTER and previous studies of Toolik Lake. Chla_Raw = (((Sample Fluorescence - Blank) * Slope) - Intercept) * (Acetone_ml / Sample Volume Filtered) |
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microgramPerLiter |
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