# Landslide chronosequence: Tree, site and vegetation factors in the Andrews Experimental Forest, 1981 ## Dataset - **Database Code:** GV002 - **Title:** Landslide chronosequence: Tree, site and vegetation factors in the Andrews Experimental Forest, 1981 - **Abstract:** To examine vegetation development on landslides by sampling a chronosequence of landslides 6-28 years old; to determine species that successfully revegetate landslides, and determine whether species composition changes with landslide age. - **Keywords:** community structure; geomorphology; debris flows; landslides; community composition; succession; disturbance; disturbance - **Temporal coverage:** 1981-01-06 to 1981-01-10 - **Principal Investigator:** Frederick J. Swanson ## Data Entities 1. GV00201 2. GV00202 ## Entity 1: GV00201 ### Attribute list - **STCODE** — varchar, freetext Study code - **FORMAT** — numeric(1.000000), range 1.0000 1.0000, number Entity number - **LANDCODE** — varchar, enum Landslide inventory code - **BR** — Landslide from upper Blue River drainage, in inventory by D.H. Marion - **FS** — Landslide from H.J. Andrews, in inventory by F.J. Swanson - **TD** — Landslide from H.J. Andrews, in inventory by C.T. Dyrness - **SITENUM** — numeric(1.000000), range 6.0000 102.0000, number Landslide site number - **TREAT** — varchar, enum Treatment- landslide(1) or clearcut (2) - **2** — Clearcut - **1** — Landslide - **FAILT** — varchar, enum Failure type: management type causing landslide - **02** — Roadfill - **03** — Road cutbank - **01** — Clearcut - **04** — Forest- undisturbed - **SLOPE** — numeric(1.000000), range 40.0000 173.0000, percent Slope gradient of landslide in degrees - **ASPECT** — numeric(1.000000), range 0.0000 350.0000, degrees azimuth Average aspect of landslide - **AREA** — numeric(1.000000), range 36.0000 1287.0000, square meters Area affected by landslide including scar and nearby deposits - **DATESL** — numeric(1.000000), range 53.0000 75.0000, year (yyyy) Date of slide - year of 1st occurance of landsliding - **DATE** — numeric(1.000000), range 198106.0000 198109.0000, date as year, month, day Date data collected - **ELEVA** — numeric(1.000000), range 1500.0000 3600.0000, feet Elevation - **PLOTNO** — numeric(1.000000), range 1.0000 20.0000, number Plot number on each landslide from 1 to 20 - **SUBST** — varchar, enum Substrate source and condition class- landslide surface feature and source of it (5 classes) - **9** — Bedrock - **6** — Angle of repose: steep section of scar through which erosional material may move, but which does not experience any major net loss or gain of material - **8** — Primary deposition: areas which recieved the original landslide debris, but do not recieve secondary accumulations of erosional material - **7** — Erosional: section of scar from which a significant net loss of substrate material occurs annually - **5** — Secondary accumulation: areas in which post-landslide erosional materials are deposited - **LITCOV** — numeric(1.000000), range 0.0000 99.0000, percent Litter cover - ocular estimate of % litter cover - **LITDEP** — numeric(1.000000), range 0.0000 70.0000, millimeters Litter depth - ocular average measured depth of litter - **VEGCOV** — numeric(1.000000), range 0.0000 99.0000, percent Vegetation cover - ocular estimate of % vegetative cover - **TOHITE** — numeric(1.000000), range 11.0000 60.0000, feet Total height of douglas fir tree - **TOAGE** — numeric(1.000000), range 5.0000 19.0000, number of years Total age at breast height in years - **GRAGE** — numeric(1.000000), range 5.0000 18.0000, number of years Growth age - age of tree for which height growth measurement was taken - **HITEGR** — numeric(1.000000), range 6.0000 561.0000, centimeters Height growth - taken for the 5 years of growth previous to the growth age - **DINC1** — numeric(1.000000), range 0.0000 40.0000, millimeters Diameter growth increment - 1st measurement on each stem - **DINC2** — numeric(1.000000), range 0.0000 38.0000, millimeters Diameter growth increment - 2nd measurement in opposite direction of 1st measurement- if assymetry present - **DBHIN** — numeric(1.000000), range 0.0000 19.0000, centimeters Diameter at breast height at the end of the diameter gouwth increment - **TRDEN** — numeric(1.000000), range 0.0000 70.0000, number Tree density - number of trees per plot - **STOBL** — varchar, enum Stockability: capability of plot to become stocked (artificially or naturally) - **2** — Marginally stockable: plot unstocked, w/ potential for natural or artificial establishement, but seedling would have poor chance for survival under standard management practices - **1** — Unstockable plot: unstocked, with natural or artificial seedling establishment & survival unlikely under standard management practices - **3** — Stocked: plot contained at least 1 established individual seedling of a potentially commercial conifer species - **4** — Stockable: plot unstocked, but a commercial conifer species seedling could become established naturally, or be established artificially. ## Entity 2: GV00202 ### Attribute list - **STCODE** — varchar, freetext Study code - **FORMAT** — numeric(1.000000), range 2.0000 2.0000, number Entity number - **LANDCODE** — varchar, enum Landslide inventory code - **BR** — Landslide from upper Blue River drainage, in inventory by D.H. Marion - **FS** — Landslide from H.J. Andrews, in inventory by F.J. Swanson - **TD** — Landslide from H.J. Andrews, in inventory by C.T. Dyrness - **SITENUM** — numeric(1.000000), range 6.0000 102.0000, number Landslide site number - **PLOTNO** — numeric(1.000000), range 1.0000 20.0000, number Plot number on each landslide from 1 to 20 - **SPECIES** — varchar, enum Species code according to Garrison et al., 1972 - **ABIES** — Abies - **ACCI** — Acer circinatum - **ACGL** — Acer glabrum - **ACMA** — Acer macrophyllum - **ACTR** — Achlys triphylla - **ACRU** — Actaea rubra - **ADBI** — Adenocaulon bicolor - **ADAL** — Adiantum aleuticum - **AGRE** — Agropyron repens - **AGROS** — Agrostis - **ALNUS** — Alnus - **ALRU** — Alnus rubra - **AMAL** — Amelanchier alnifolia - **ANMA** — Anaphalis margaritacea - **ANDE** — Anemone deltoidea - **ANOR** — Anemone oregana - **APAN** — Apocynum androsaemifolium - **ARCA3** — Aralia californica - **ARME** — Arbutus menziesii - **ARUI** — Arenaria uintahensis - **ASCA3** — Asarum caudatum - **ATFI** — Athyrium filix-femina - **BENE** — Berberis nervosa - **BLSP** — Blechnum spicant - **BOEL** — Boykinia elata - **BRMO** — Bromus mollis - **BRTE** — Bromus tectorum - **BRVU** — Bromus vulgaris - **CABU2** — Calypso bulbosa - **CASC2** — Campanula scouleri - **CAREX** — Carex - **CEIN** — Ceanothus integerrimus - **CEVE** — Ceanothus velutinus - **CEVI** — Cerastium viscosum - **CHUM** — Chimaphila umbellata - **CIRSI** — Cirsium - **CLUN** — Clintonia uniflora - **COHE** — Collomia heterophylla - **COLA** — Coptis laciniata - **COCA** — Cornus canadensis - **CONU** — Cornus nuttallii - **COCO2** — Corylus cornuta - **CREPI** — Crepis - **DAGL** — Dactylis glomerata - **DEEL** — Deschampsia elongata - **DIFO** — Dicentra formosa - **DIHO** — Disporum hookeri - **ELYMU** — Elymus - **EPMI** — Epilobium minutum - **EQUIS** — Equisetum - **FEMI** — Festuca microstachys - **FEOC** — Festuca occidentalis - **FESU2** — Festuca subuliflora - **FRAGA** — Fragaria - **GAAP** — Galium aparine - **GAOR** — Galium oreganum - **GAOV** — Gaultheria ovatifolia - **GASH** — Gaultheria shallon - **GICA** — Gilia capitata - **GLYCE** — Glyceria - **GNAPH** — Gnaphalium - **GOOB** — Goodyera oblongifolia - **HIAL** — Hieracium albiflorum - **HOLA** — Holcus lanatus - **HODI** — Holodiscus discolor - **HYPE** — Hypericum perforatum - **IRIS** — Iris - **JUNCU** — Juncus - **LAMU** — Lactuca muralis - **LAPO** — Lathyrus polyphyllus - **LIBO2** — Linnaea borealis - **LOPE2** — Lolium perenne - **LOTUS** — Lotus - **LOCR** — Lotus crassifolius - **LOMI** — Lotus micranthus - **LURI** — Lupinus rivularis - **LYCOP** — Lycopodium - **MADIA** — Madia - **MELIC** — Melica - **MIMUL** — Mimulus - **MOSI** — Montia sibirica - **MYOSO** — Myosotis - **OPHO** — Oplopanax horridus - **OXALI** — Oxalis - **OXOR** — Oxalis oregana - **PAMY** — Pachystima myrsinites - **PENST** — Penstemon - **PEFR2** — Petasites frigidus - **PHACE** — Phacelia - **PHPR** — Phleum pratense - **PILA** — Pinus lambertiana - **POMU** — Polystichum munitum - **POTR2** — Populus trichocarpa - **PRVI** — Prunus virginiana - **PSME** — Pseudotsuga menziesii - **PTAQ** — Pteridium aquilinum - **PYAS** — Pyrola asarifolia - **RANUN** — Ranunculus - **RHPU** — Rhamnus purshiana - **RHMA** — Rhododendron macrophyllum - **RIBES** — Ribes - **RIBR** — Ribes bracteosum - **ROSA** — Rosa - **RULE** — Rubus leucodermis - **RUPA** — Rubus parviflorus - **RUSP** — Rubus spectabilis - **RUUR** — Rubus ursinus - **RUAC** — Rumex acetosella - **SALIX** — Salix - **SEDUM** — Sedum - **SEBO** — Senecio bolanderi - **SESY** — Senecio sylvaticus - **SONCH** — Sonchus - **STRI** — Stachys rigida - **SYAL** — Symphoricarpos albus - **SYRE** — Synthyris reniformis - **TABR** — Taxus brevifolia - **TEGR** — Tellima grandiflora - **THPL** — Thuja plicata - **TITR** — Tiarella trifoliata - **TRLA2** — Trientalis latifolia - **TRRE** — Trifolium repens - **TROV** — Trillium ovatum - **TRISE** — Trisetum - **TSHE** — Tsuga heterophylla - **VAME** — Vaccinium membranaceum - **VAPA** — Vaccinium parvifolium - **VAHE** — Vancouveria hexandra - **VIAM** — Vicia americana - **VISE** — Viola sempervirens - **WHMO** — Whipplea modesta - **XETE** — Xerophyllum tenax - **ASRA** — Aster radulinus - **CACH** — Castanopsis chrysophylla - **SIHY** — Sitanion hystrix - **SMST** — Smilacina stellata - **EPAN** — Epilobium angustifolium - **LUCA2** — Luzula campestris - **SMRA** — Smilacina racemosa - **FESC** — Festuca scabrella - **CADE** — Carex deweyana - **COVER** — numeric(1.000000), range 0.0000 99.0000, percent Ocular estimate of percent cover ## Attribute Definitions **AREA** Area affected by landslide including scar and nearby deposits **ASPECT** Average aspect of landslide **COVER** Ocular estimate of percent cover **DATE** Date data collected **DATESL** Date of slide - year of 1st occurance of landsliding **DBHIN** Diameter at breast height at the end of the diameter gouwth increment **DINC1** Diameter growth increment - 1st measurement on each stem **DINC2** Diameter growth increment - 2nd measurement in opposite direction of 1st measurement- if assymetry present **ELEVA** Elevation **FAILT** Failure type: management type causing landslide **FORMAT** Entity number **GRAGE** Growth age - age of tree for which height growth measurement was taken **HITEGR** Height growth - taken for the 5 years of growth previous to the growth age **LANDCODE** Landslide inventory code **LITCOV** Litter cover - ocular estimate of % litter cover **LITDEP** Litter depth - ocular average measured depth of litter **PLOTNO** Plot number on each landslide from 1 to 20 **SITENUM** Landslide site number **SLOPE** Slope gradient of landslide in degrees **SPECIES** Species code according to Garrison et al., 1972 **STCODE** Study code **STOBL** Stockability: capability of plot to become stocked (artificially or naturally) **SUBST** Substrate source and condition class- landslide surface feature and source of it (5 classes) **TOAGE** Total age at breast height in years **TOHITE** Total height of douglas fir tree **TRDEN** Tree density - number of trees per plot **TREAT** Treatment- landslide(1) or clearcut (2) **VEGCOV** Vegetation cover - ocular estimate of % vegetative cover ## Enumerated Domains ### LANDCODE - **BR** — Landslide from upper Blue River drainage, in inventory by D.H. Marion - **FS** — Landslide from H.J. Andrews, in inventory by F.J. Swanson - **TD** — Landslide from H.J. Andrews, in inventory by C.T. Dyrness ### TREAT - **2** — Clearcut - **1** — Landslide ### FAILT - **02** — Roadfill - **03** — Road cutbank - **01** — Clearcut - **04** — Forest- undisturbed ### SUBST - **9** — Bedrock - **6** — Angle of repose: steep section of scar through which erosional material may move, but which does not experience any major net loss or gain of material - **8** — Primary deposition: areas which recieved the original landslide debris, but do not recieve secondary accumulations of erosional material - **7** — Erosional: section of scar from which a significant net loss of substrate material occurs annually - **5** — Secondary accumulation: areas in which post-landslide erosional materials are deposited ### STOBL - **2** — Marginally stockable: plot unstocked, w/ potential for natural or artificial establishement, but seedling would have poor chance for survival under standard management practices - **1** — Unstockable plot: unstocked, with natural or artificial seedling establishment & survival unlikely under standard management practices - **3** — Stocked: plot contained at least 1 established individual seedling of a potentially commercial conifer species - **4** — Stockable: plot unstocked, but a commercial conifer species seedling could become established naturally, or be established artificially. ### SPECIES - **ABIES** — Abies - **ACCI** — Acer circinatum - **ACGL** — Acer glabrum - **ACMA** — Acer macrophyllum - **ACTR** — Achlys triphylla - **ACRU** — Actaea rubra - **ADBI** — Adenocaulon bicolor - **ADAL** — Adiantum aleuticum - **AGRE** — Agropyron repens - **AGROS** — Agrostis - **ALNUS** — Alnus - **ALRU** — Alnus rubra - **AMAL** — Amelanchier alnifolia - **ANMA** — Anaphalis margaritacea - **ANDE** — Anemone deltoidea - **ANOR** — Anemone oregana - **APAN** — Apocynum androsaemifolium - **ARCA3** — Aralia californica - **ARME** — Arbutus menziesii - **ARUI** — Arenaria uintahensis - **ASCA3** — Asarum caudatum - **ATFI** — Athyrium filix-femina - **BENE** — Berberis nervosa - **BLSP** — Blechnum spicant - **BOEL** — Boykinia elata - **BRMO** — Bromus mollis - **BRTE** — Bromus tectorum - **BRVU** — Bromus vulgaris - **CABU2** — Calypso bulbosa - **CASC2** — Campanula scouleri - **CAREX** — Carex - **CEIN** — Ceanothus integerrimus - **CEVE** — Ceanothus velutinus - **CEVI** — Cerastium viscosum - **CHUM** — Chimaphila umbellata - **CIRSI** — Cirsium - **CLUN** — Clintonia uniflora - **COHE** — Collomia heterophylla - **COLA** — Coptis laciniata - **COCA** — Cornus canadensis - **CONU** — Cornus nuttallii - **COCO2** — Corylus cornuta - **CREPI** — Crepis - **DAGL** — Dactylis glomerata - **DEEL** — Deschampsia elongata - **DIFO** — Dicentra formosa - **DIHO** — Disporum hookeri - **ELYMU** — Elymus - **EPMI** — Epilobium minutum - **EQUIS** — Equisetum - **FEMI** — Festuca microstachys - **FEOC** — Festuca occidentalis - **FESU2** — Festuca subuliflora - **FRAGA** — Fragaria - **GAAP** — Galium aparine - **GAOR** — Galium oreganum - **GAOV** — Gaultheria ovatifolia - **GASH** — Gaultheria shallon - **GICA** — Gilia capitata - **GLYCE** — Glyceria - **GNAPH** — Gnaphalium - **GOOB** — Goodyera oblongifolia - **HIAL** — Hieracium albiflorum - **HOLA** — Holcus lanatus - **HODI** — Holodiscus discolor - **HYPE** — Hypericum perforatum - **IRIS** — Iris - **JUNCU** — Juncus - **LAMU** — Lactuca muralis - **LAPO** — Lathyrus polyphyllus - **LIBO2** — Linnaea borealis - **LOPE2** — Lolium perenne - **LOTUS** — Lotus - **LOCR** — Lotus crassifolius - **LOMI** — Lotus micranthus - **LURI** — Lupinus rivularis - **LYCOP** — Lycopodium - **MADIA** — Madia - **MELIC** — Melica - **MIMUL** — Mimulus - **MOSI** — Montia sibirica - **MYOSO** — Myosotis - **OPHO** — Oplopanax horridus - **OXALI** — Oxalis - **OXOR** — Oxalis oregana - **PAMY** — Pachystima myrsinites - **PENST** — Penstemon - **PEFR2** — Petasites frigidus - **PHACE** — Phacelia - **PHPR** — Phleum pratense - **PILA** — Pinus lambertiana - **POMU** — Polystichum munitum - **POTR2** — Populus trichocarpa - **PRVI** — Prunus virginiana - **PSME** — Pseudotsuga menziesii - **PTAQ** — Pteridium aquilinum - **PYAS** — Pyrola asarifolia - **RANUN** — Ranunculus - **RHPU** — Rhamnus purshiana - **RHMA** — Rhododendron macrophyllum - **RIBES** — Ribes - **RIBR** — Ribes bracteosum - **ROSA** — Rosa - **RULE** — Rubus leucodermis - **RUPA** — Rubus parviflorus - **RUSP** — Rubus spectabilis - **RUUR** — Rubus ursinus - **RUAC** — Rumex acetosella - **SALIX** — Salix - **SEDUM** — Sedum - **SEBO** — Senecio bolanderi - **SESY** — Senecio sylvaticus - **SONCH** — Sonchus - **STRI** — Stachys rigida - **SYAL** — Symphoricarpos albus - **SYRE** — Synthyris reniformis - **TABR** — Taxus brevifolia - **TEGR** — Tellima grandiflora - **THPL** — Thuja plicata - **TITR** — Tiarella trifoliata - **TRLA2** — Trientalis latifolia - **TRRE** — Trifolium repens - **TROV** — Trillium ovatum - **TRISE** — Trisetum - **TSHE** — Tsuga heterophylla - **VAME** — Vaccinium membranaceum - **VAPA** — Vaccinium parvifolium - **VAHE** — Vancouveria hexandra - **VIAM** — Vicia americana - **VISE** — Viola sempervirens - **WHMO** — Whipplea modesta - **XETE** — Xerophyllum tenax - **ASRA** — Aster radulinus - **CACH** — Castanopsis chrysophylla - **SIHY** — Sitanion hystrix - **SMST** — Smilacina stellata - **EPAN** — Epilobium angustifolium - **LUCA2** — Luzula campestris - **SMRA** — Smilacina racemosa - **FESC** — Festuca scabrella - **CADE** — Carex deweyana