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Harvard Forest Data Archive

HF090

Source-Sink Dynamics of Garlic Mustard Invasion at Harvard Forest 2004-2006

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Data

Overview

  • Lead: Kristina Stinson, Kathleen Donohue
  • Investigators: David Foster
  • Contact: Kristina Stinson
  • Start date: 2004
  • End date: 2006
  • Status: completed
  • Location: Prospect Hill Tract (Harvard Forest)
  • Latitude: +42.53 to +42.55
  • Longitude: -72.20 to -72.17
  • Elevation: 280 to 420 meter
  • Taxa: Alliaria petiolata (garlic mustard)
  • Release date: 2009
  • Revisions:
  • EML file: knb-lter-hfr.90.19
  • DOI: digital object identifier
  • Related links:
  • Study type: long-term measurement
  • Research topic: invasive plants, pests and pathogens; regional studies
  • LTER core area: populations
  • Keywords: forest disturbance, genetics, invasive species, population dynamics
  • Abstract:

    We are investigating the role of disturbance history, source-sink metapopulation dynamics, and genetic adaptation to different canopy environments in the invasion success of Alliaria petiolata in the New England understory. In these studies, we employ a combination of population-level experiments, metapopulation studies, and landscape-level historical analyses. We have initiated a statewide survey of forested locations to determine the presence and absence of garlic mustard with respect to major pathways of invasion via past and present habitat disturbances. More explicit spatial analyses will test whether past sites of open canopy could have acted as corridors for the spread of invasive populations to present locations. This broad analysis will enable us to evaluate the generality of emerging conclusions from our population-level studies for predicting the broad-scale factors controlling the distribution, pattern and abundance of exotic species.

    At the population-level, we have begun long term demographic modeling of A. petiolata and experiments to test for habitat-specific natural selection on physiological, phenological, and allocational traits in sites with different canopy structure (edge or understory). In long term demographic analyses, we will use matrix population models to determine the relative contributions of subpopulations in different habitats to forest invasion. In ongoing reciprocal transplant studies, we will asses whether the maternal source habitat of a propagule contributes to its germination and survival in contrasting habitats.

  • Methods:

    Methods include: demographic monitoring of field populations, recording plant performance, seed collection, controlled experiments using potted plants, experimental field eradications, reciprocal transplanting between sun and shade habitat, and GIS mapping of forest invasions.

  • Use:

    This dataset is released to the public under Creative Commons license CC BY (Attribution). Please keep the designated contact person informed of any plans to use the dataset. Consultation or collaboration with the original investigators is strongly encouraged. Publications and data products that make use of the dataset must include proper acknowledgement.

  • Citation:

    Stinson K, Donohue K. 2009. Source-Sink Dynamics of Garlic Mustard Invasion at Harvard Forest 2004-2006. Harvard Forest Data Archive: HF090.

Detailed Metadata

hf090-01: plants 2004

  1. year: year
  2. location: name of site replicate, corresponds to nearby buildings or roads
    • BEN: Benson House
    • SHA: Shaler Hall
    • HWY: Highway House
  3. treat.hab: experimental growth habitat, i.e., transplant treatment habitat
    • Forest: forest interior habitat
    • Int: intermediate between edge and understory habitats
    • Sun: edge/open/sunny habitat
  4. mat.hab: habitat for seed sources
    • Forest: forest interior habitat
    • Int: intermediate between edge and understory habitats
    • Sun: edge/open/sunny habitat
  5. id: tag id for individual experimental plants
  6. germ.rate.6.14.04: number of plants out of ten planted seeds that germinated by given date (unit: number / missing value: NA)
  7. survival.rate.6.14.04: number of plants out of germinated seeds that survived by given date (unit: number / missing value: NA)
  8. num.lvs.6.11.04: number of leaves on target seedling (unit: number / missing value: NA)
  9. survival.7.9.04: survival of target seedling by given date (unit: number / missing value: NA)
  10. num.lvs.7.9.04: number of leaves on target seedling by given date (unit: number / missing value: NA)
  11. height.7.9.04: height from base of plant to tip of seedling by given date (unit: centimeter / missing value: NA)

hf090-02: plants 2005

  1. year: year
  2. id: tag id for individual experimental plants
  3. site: name of site replicate, corresponds to nearby buildings or roads
    • Benson: Benson House
    • Highway: Highway House
    • Shaler: Shaler Hall
  4. block: replicate sampling block ID number
  5. maternal: habitat for seed sources
    • Forest: forest interior habitat
    • Int: intermediate between edge and understory habitats
    • Sun: edge/open/sunny habitat
  6. matall: maternal habitat for seed sources including dead plants/empty pots
    • Forest: forest interior habitat
    • Int: intermediate between edge and understory habitats
    • Sun: edge/open/sunny habitat
    • NOSEEDS: no seeds
  7. treat.hab: experimental growth habitat, i.e., transplant treatment habitat
    • Forest: forest interior habitat
    • Int: intermediate between edge and understory habitats
    • Sun: edge/open/sunny habitat
  8. basallvs: no. of basal leaves (unit: number / missing value: NA)
  9. laterallvs: no. of lateral leaves (lvs on branches) (unit: number / missing value: NA)
  10. totallvs: basallvs + lateralllvs (unit: number / missing value: NA)
  11. lfbiomass: mass of leaves collected at end of season (unit: gram / missing value: NA)
  12. lateralbr: no. of lateral branches; usually 1 (unit: number / missing value: NA)
  13. julharv: julian date of senescence/harvest (unit: nominalDay / missing value: NA)
  14. date.harv: date of senescence/harvest
  15. julfrt: julian date of first observed fruit (unit: nominalDay / missing value: NA)
  16. date.frt: date of first observed fruit
  17. roots: root mass (unit: gram / missing value: NA)
  18. shoots: total shoot mass (unit: gram / missing value: NA)
  19. siliques: total silique (fruit) mass (unit: gram / missing value: NA)
  20. drywtseed: dry wt of 10 randomly selected seeds (unit: gram / missing value: NA)
  21. wetwtseed: wet wt of 10 randomly selected seeds (unit: gram / missing value: NA)
  22. numseeds: number of seeds (unit: number / missing value: NA)
  23. avgseedwt: no. of seeds used in drwtseed sample (unit: number / missing value: NA)
  24. dryheight: height from base to tip of dried plant (unit: centimeter / missing value: NA)
  25. liveheight: height from base to tip of standing live plant in field (unit: centimeter / missing value: NA)
  26. rtshtratio: roots/shoots (unit: dimensionless / missing value: NA)
  27. lfct04: number of leaves on 1st year plants (2004) (unit: number / missing value: NA)
  28. germ04: germination rate (2004) (unit: dimensionless / missing value: NA)
  29. survcalc: survival calculation (unit: number )
  30. surv05: survival of 1st to second year plants (2004-2005)
    • 1: yes
    • 0: no

hf090-03: temperature

  1. datetime: date and time
  2. date: date
  3. month: month
  4. year: year
  5. time: time
  6. site: name of study site replicate, corresponds to nearby buildings or roads
  7. habitat: habitat
    • For: forest interior habitat
    • Int: intermediate between edge and understory habitats
    • Sun: edge/open/sunny habitat
  8. block: replicate sampling block ID number
  9. temp: temperature (unit: celsius / missing value: NA)

hf090-04: moisture

  1. datetime: date and time
  2. date: date
  3. year: year
  4. time: time
  5. site: name of study site replicate, corresponds to nearby buildings or roads
  6. habitat: habitat
    • For: forest interior habitat
    • Int: intermediate between edge and understory habitats
    • Sun: edge/open/sunny habitat
  7. block: replicate sampling block ID number
  8. volt: voltage reading used to calculate soil moisture (unit: volt / missing value: NA)
  9. mineral: percentage soil moisture (unit: dimensionless / missing value: NA)

hf090-05: individuals

  1. year: year
  2. site: name of site replicate, corresponds to nearby buildings or roads
  3. habitat: habitat
    • For: forest interior habitat
    • Int: intermediate between edge and understory habitats
    • Sun: edge/open/sunny habitat
  4. transect: A-E , tags for location of target plant within population
  5. plant: plant ID tag
  6. ht.leaf: height from base to top leaf (unit: centimeter / missing value: NA)
  7. ht.tip: height from base to tip of plant (unit: centimeter / missing value: NA)
  8. leaf.node: number of leaf nodes on the main branch (unit: number / missing value: NA)
  9. imm.bran: number of lateral branches (unit: number / missing value: NA)
  10. bran: total number of branches (unit: number / missing value: NA)
  11. leaf.sil: number of siliques emerging from a leaf node (unit: number / missing value: NA)
  12. prim.sil: number of siliques on the primary stem (unit: number / missing value: NA)
  13. sec.sil: number of siliques on the secondary stems (unit: number / missing value: NA)
  14. basal.bran: number of basal branches (unit: number / missing value: NA)
  15. basal.sil: number of siliques on basal branches (unit: number / missing value: NA)
  16. total.siliques: total number of siliques (unit: number / missing value: NA)
  17. rosette: rosette presence/absence
    • 0: rosette leaves absent
    • 1: rosette leaves present
  18. flower: flower presence/absence
    • 0: no flowers present
    • 1: flowers present
  19. mass.shoot: shoot mass (unit: gram / missing value: NA)
  20. mass.root: root mass (unit: gram / missing value: NA)
  21. root.shoot: derived from mass.shoot and mass.root (unit: gram / missing value: NA)
  22. total.repro.mass: biomass of all siliques, flowers, buds at time of collection (unit: gram / missing value: NA)
  23. total.biomass: total biomass, derived from above (unit: gram / missing value: NA)
  24. new.repro.branch: number of reproductive branches appearing late in July (2006 only) (unit: number / missing value: NA)
  25. new.siliques: number of new siliques appearing in July (2006 only) (unit: number / missing value: NA)
  26. new.flowers: number of new flowers appearing in July (2006 only) (unit: number / missing value: NA)