uid=KBS,o=lter,dc=ecoinformatics,dc=orgalluid=sbohm,o=lter,dc=ecoinformatics,dc=orgallpublicreadhttps://lter.kbs.msu.edu/datasets/33.emlNicholasHaddadMichigan State University

3700 E Gull Lake DriveHickory Corners49060US

haddad@kbs.msu.edu0000-0002-1591-9322SieglindeSnappMichigan State University

3700 East Gull Lake DriveHickory CornersMichigan49060US

snapp@msu.edu0000-0002-9738-0649JosephSimmonsMichigan State University

3700 East Gull Lake DriveHickory CornersMI49060

(269) 671-2528(269)671-2104simmonsj@kbs.msu.eduprincipal contactStaceyVanderWulpMichigan State University

3700 East Gull Lake DriveHickory CornersMI49060US

(269) 671-2339(269) 671-2333vanderws@msu.eduprincipal contactG.RobertsonMichigan State University

3700 East Gull Lake DriveHickory CornersMI49060US

(269) 760-8364(269)671-2351robert30@msu.edu0000-0001-9771-9895original investigator2026-09-07

original data source http://lter.kbs.msu.edu/datasets/33

LTERKBSKellogg Biological StationHickory CornersMichiganGreat LakescropbiomasscountanppPrimary ProductionPopulationsDisturbanceLTER Core Research Areacount corn soybean wheatfarmingbiotahttps://apps.usgs.gov/thesaurus/thesaurus-full.php?thcode=15Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director. These restrictions are intended mainly to preserve the primary investigators' rights to first publication and to ensure that data users are aware of the limitations that may be associated with any specific data set. These restrictions apply to both the baseline data set and to the data sets associated with specific LTER-supported subprojects.All publications of KBS data and images must acknowledge KBS LTER support.The areas around the Kellogg Biological Station in southwest Michigan-85.404699-85.36685742.42026542.3910192003-09-302006-10-10Kellogg Biological StationData Managerlter.data.manager@kbs.msu.eduhttp://lter.kbs.msu.edu02vkce854KBS LTERAboveground net primary production (ANPP) is a measure of plant carbon (and energy) capture as estimated by annual biomass accumulation. For herbaceous plants, whether annual or perennial, aboveground plant material is hand-clipped at peak biomass, oven dried, and weighed. For woody plants, both wood and leaf production must be measured. Wood production is estimated using allometric equations that predict annual changes in mass based on annual changes in stem diameter. Leaf production is estimated by collecting litterfall in traps placed on the ground. ANPP is expressed as plant dry mass accumulated per unit area per year (g/m2/y). Sampling frequency: Depends on MCSE treatment; a minimum of once per growing season, at peak biomass prior to harvest or as described below, or throughout the growing season for crops with multiple harvests. Data Managerhttp://lter.kbs.msu.edu/protocols/191Stand counts can be used to evaluate seedling emergence, density, and distribution. We use the Vogel-Masters stand count method (Vogel and Masters, 2001) in herbaceous perennial treatments to measure frequency of occurrence or stand percentages of a single target species (i.e., switchgrass, miscanthus) or of a given growth form (i.e., native grasses). Dividing the frequency of occurrence by the total area examined provides a conservative estimate of plant density (plants/m2). This protocol should be completed annually during the establishment phase.Data Managerhttp://lter.kbs.msu.edu/protocols/175programNational Science Foundationhttp://dx.doi.org/10.13039/100000001DEB 2224712https%3A%2F%2Fnsf.gov%2Fawardsearch%2FshowAward%3FAWD_ID%3D2224712%26HistoricalAwards%3Dfalsehttps://lter.kbs.msu.edu/datatables/172Kellogg Biological Station LTER: Annual Crop (T1-T4) Stand Counts (KBS019-016)The number of annual crop plants (stand counts) in ANPP biomass samples taken before harvest of MCSE Treatments 1-4, reported in number per square meter.Anual+Crop+(T1-T4)+Stand+Counts.csvNone251\ncolumn,no"\https://lter.kbs.msu.edu/datatables/172.csvdatesample dateYYYY-MM-DD11987-4-18treatmenttreatment that the sample came fromtreatment that the sample came fromreplicatereplicate plot the sample was taken fromreplicate plot the sample was taken fromstationthe station where the plants were collectedthe station where the plants were collectedspeciescrop species growncrop species grownplants_per_square_meternumber of plants per square meter quadrantnumberPerMeterSquaredrealhttps://lter.kbs.msu.edu/datatables/684Kellogg Biological Station LTER: Switchgrass (T6) Stand Counts (KBS019-027)Stand counts of switchgrass in MCSE Treatment 6 at the LTER Main Site conducted after emergence in late spring/early summer to monitor stand development and recruitment.Switchgras+(T6)+Stand+Counts.csvNone281\ncolumn,no"\https://lter.kbs.msu.edu/datatables/684.csvyearsample yearsample yearsample_datesample dateYYYY-MM-DD11987-4-18siteexperimental siteexperimental sitetreatmenttreatment nametreatment namereplicatereplicatereplicatestationstation idstation idspeciesSpecies sampledSpecies sampledstand_count_m2Stand Count estimated by the Vogel and Masters 2001numberPerMeterSquaredrealcommentscomments about the observationcomments about the observationhttps://lter.kbs.msu.edu/datatables/74Kellogg Biological Station LTER: Soybean Stand Counts (KBS030-001)Stand counts from MCSE annual crop treatments (T1-T4) when planted to soybean in the rotation. All plots were planted with the same density, but due to events and competition during the season the final stand counts can be differentSoybean+Stand+Counts.csvNone251\ncolumn,no"\https://lter.kbs.msu.edu/datatables/74.csvDatesample dateYYYY-MM-DD11987-4-18Trtexperimental treatment see experiment layoutexperimental treatment see experiment layoutRepexperimental replicateexperimental replicateCropcropcropPlants_acrenumber of plants per acrenumberPerAcreintegerYearsample yearYYYY11987-4-18https://lter.kbs.msu.edu/datatables/453Kellogg Biological Station LTER: Poplar (T5) Stand Counts (KBS094-001)Number of poplar trees (T5) present, by planted row, to document the survival rate of planted trees. All trees counted; damage recorded when extensivePoplar+(T5)+Stand+Counts.csvNone281\ncolumn,no"\https://lter.kbs.msu.edu/datatables/453.csvsitethe sample sitethe sample sitesample_datethe date the poplar trees were countedYYYY-MM-DD11987-4-18treatmentthe treatment sampledthe treatment sampledreplicatethe replicate sampledthe replicate sampledrowthe poplar row. counting from (east to westthe poplar row. counting from (east to westalivethe number of trees in the row that were alivenumberintegerdeadthe number of trees in the row that were deadnumberintegerabsentthe number of trees in the row that were missingnumberintegercommentcommentcommenthttps://lter.kbs.msu.edu/datatables/615Kellogg Biological Station LTER: Poplar (T5) Stand Assessment (KBS094-002)Number of trees along a given planted row (transect) either missing (died or did not grow) or with visible caterpillar or deer damage.Poplar+(T5)+Stand+Asesment.csvNone271\ncolumn,no"\https://lter.kbs.msu.edu/datatables/615.csvsiteSite sampledSite sampledsample_datesample dateYYYY-MM-DD11987-4-18plotthe plot sampledthe plot sampledtransectthe transect sampled.the transect sampled.number_of_trees_with_caterpillar_damagethe number of trees in the transect that had visible caterpillar damagenumberintegernumber_of_missing_treesthe number of trees in the transect that were missing (died or did not grow)numberintegernumber_of_trees_with_deer_damagethe number of trees in the transect with visible deer damagenumberintegernumber_of_trees_with_rust_spots_on_leavesthe number of trees in the transect that had visible rust spots on the leavesnumberinteger