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Project:
Comparative growth trends of five Northern hardwood and montane tree species along elevational transects in Mt. Mansfield State Forest

Objectives: We compared growth trends and response to climate and environmental variables among dominant tree species along elevational gradients at Mt. Mansfield, VT: balsam fir, red maple, red spruce, sugar maple, and yellow birch.

Principal Investigator: Alexandra Kosiba, Paul Schaberg, Gary Hawley, Shelly Rayback

Primary Contact: Alexandra Kosiba

Laboratory: Schaberg/Hawley/Rayback Dendrochronology Collaborative

Recommended Citation: Kosiba AM, Schaberg PG, Rayback SA, and Hawley GJ. 2012. Tree cores from three elevational transects along Mt. Mansfield, VT.

Project Contents: Data for 9 Plots, 268 Trees, 479 Cores

Project Period: 2012-10-05 to 2016-07-21

Species:

Acer rubrum
Acer saccharum
Abies balsamea
Betula alleghaniensis
Picea rubens

Data License: cc-zero license logo

What's this?

Description: We set up elevational transects were set up in three of the four watersheds on Mt. Mansfield (Underhill, VT): Brown’s River, Stevensville Brook, and Ranch Brook Watersheds. Along each of these transects, three plots were selected – one within each of the following elevational zones: low (450-650 m asl), mid (750-850 m) and high (900-1000 m) (n plots = 9), which align with northern hardwoods, transition, and montane spruce-fir ecotones. Plots contained 10-14 dominant or co-dominant trees of each of the target tree species with approximately equal distribution around plot center in attempts to avoid differing competition pressures between trees. We sampled red maple, sugar maple, and red spruce at low elevation; sugar maple, yellow birch, and red spruce at mid elevation; and red spruce and balsam fir at high elevation. Due to differential species densities across the landscape, plots were of variable radius.

Related Publications:

  1. Kosiba, A.M., Schaberg, P.G., Rayback, S.A. and Hawley, G.J. . 2016. Comparative growth trends of five northern hardwood and montane tree species reveal divergent trajectories and response to climate. Canadian Journal of Forest Research, 47(6), pp.743-754. doi:/10.1139/cjfr-2016-0308 View


Project Metadata

Taxonomic standard used: USDA Plants Database

How plots were selected: Elevational transects were set up in three of the four watersheds on Mt. Mansfield. Along each transect, three plots were selected, one within each of the following elevational zones: low (450–650 m a.s.l.), mid (750–850 m), and high (900–1000 m) (n plots = 9), which align with northern hardwoods, transition, and montane spruce–fir ecotones, respectively. No obvious stand mortality or substantial recent disturbance was evident in any of the plots.

How trees were selected: Plots contained 10–14 dominant or co-dominant trees of each of the target tree species equally distributed around plot center to avoid differing competition pressures among trees. We sampled red maple, sugar maple, and red spruce at low elevation; sugar maple, yellow birch, and red spruce at mid elevation; and red spruce and balsam fir at high elevation. Due to differential species densities across the landscape and different numbers of species sampled per plot, plots were of variable radius (approx. 20–35 m).

Exclusion of trees (if any): Trees with obvious bole or crown damage or those growing in anomalous conditions were not selected.

How cores were collected: We collected two 5 mm increment cores per tree at stem diameter at breast height (DBH, 1.37 m above ground level) at 180° and perpendicular to the slope.

How cores were processed: Cores were air-dried, sanded with progressively finer grit sandpaper (ranging from 100 to 1500 grit depending on species), and visually crossdated using the list method. We microscopically measured rings to 0.001 mm resolution using a Velmex sliding stage unit with MeasureJ2X software and used the computer program COFECHA to detect and correct for potential crossdating errors in ring series.

Exclusion of cores (if any): Individual cores were discarded if they were poorly correlated with the master chronology (i.e., below Pearson critical correlation level of 0.328 (99% confidence level)).

Added to the database: 01/12/2018

Last modified: 06/08/2018

Sample of Plot Data

Up to 10 rows of data are shown below.

Plot ID Latitude Longitude Site Description Crew
BLTHigh44.516050-72.820450Near Butler Lodge Trail; high elevation plot; dense, short spruce-fir; rocky outcrops; minimal understory due to dense spruce/fir. Alexandra Kosiba, Paul Schaberg, Kindle Loomis, Benjamin Engel, Shelly Rayback
BLTLow44.510010-72.826280Near Butler Lodge Trail; low elevation plot; flat; mixed hardwoods (maple, birch) with codominant red spruce; herbaceous and woody shrub understory. Alexandra Kosiba, Paul Schaberg, Kindle Loomis, Benjamin Engel, Shelly Rayback
BLTMid44.505620-72.842740Near Butler Lodge Trail; mid elevation plot; beautful, widely spaced forest with large, emergent red spruce, and mixed hardwoods (birch, maple); rich understory; gradually sloped west.Alexandra Kosiba, Paul Schaberg, Kindle Loomis, Benjamin Engel, Shelly Rayback
SNCHigh44.520320-72.811920Near Stowe Nordic Center; high elevation plot; spruce-fir forest with minimal understory, slightly sloped east; proximal to a stream. Alexandra Kosiba, Benjamin Engel, Dan Hale
SNCLow44.514000-72.809000Near Stowe Nordic Center; low elevation plot; mixed hardwoods with large, healthy red spruce; gradually sloped east.Alexandra Kosiba, Benjamin Engel, Dan Hale
SNCMid44.506960-72.798190Near Stowe Nordic Center; mid elevation plot; mixed, widely-spaced hardwoods (birch, maple), with large red spruce; fairly flat.Alexandra Kosiba, Benjamin Engel, Dan Hale
USPHigh44.531850-72.822910Near Underhill State Park; high elevation plot; dense spruce-fir forest with birch, mountain-ash, minimal understory, steeply sloped west.Alexandra Kosiba, Benjamin Engel, Kindle Loomis
USPLow44.532400-72.828350Near Underhill State Park; low elevation plot; beautiful sugar maple dominated stand, with red maple and red spruce evenly disturbaed; fairly flat; herbaceous understory.Alexandra Kosiba, Benjamin Engel, Kindle Loomis
USPMid44.528410-72.836560Near Underhill State Park; mid elevation plot; mixed hardwoods with large red spruce component; fairly flat; ephemeral stream bisects the plot; dense fern and hobblebush understory. Alexandra Kosiba, Benjamin Engel, Kindle Loomis

Sample of Tree Data

Up to 10 rows of data are shown below.

Plot ID Tree ID Species Status Diameter Diameter Units Crown Position Vigor Dieback
BLTHigh488ABBA117.6centimeterCodominant465
BLTHigh490ABBA120.5centimeterDominant225
BLTHigh491ABBA117.4centimeterCodominant450
BLTHigh492ABBA121.9centimeterDominant470
BLTHigh493ABBA118centimeterCodominant330
BLTHigh495ABBA119.5centimeterCodominant460
BLTHigh496ABBA119.6centimeterCodominant335
BLTHigh497ABBA122.9centimeterCodominant340
BLTHigh498ABBA123.6centimeterCodominant340
BLTHigh499ABBA122.5centimeterCodominant475
BLTHigh500ABBA124centimeterDominant485

Sample of raw core data

Up to 10 rows of data are shown below.

Plot ID Tree ID DBH Vigor Sample ID Species First Year Last Year Estimated Age 20122011201020092008200720062005200420032002200120001999199819971996199519941993199219911990198919881987198619851984198319821981198019791978197719761975197419731972197119701969196819671966196519641963196219611960195919581957195619551954195319521951195019491948194719461945194419431942194119401939193819371936193519341933193219311930192919281927192619251924192319221921192019191918191719161915191419131912191119101909190819071906190519041903190219011900189918981897189618951894189318921891
BLTHigh48817.64AABBA192920121220.310.2990.4170.3640.3590.2930.2960.2250.1790.2040.2430.2850.2150.2250.3210.3060.3850.4810.6210.6180.7370.6390.7240.6350.8130.85811.0510.8330.9860.6240.8271.0970.9210.8250.7191.1441.0220.8971.060.9830.9860.9770.7670.6980.5740.4610.4060.470.3020.3950.5360.3610.5310.5580.4580.2990.7040.590.5770.6560.7780.8850.9590.7720.9721.031.2071.3321.6111.2841.7131.7692.3282.6271.5581.7651.5281.7361.891.8421.7391.5790.947
BLTHigh49020.52AABBA194720121591.1491.1561.1411.5461.5121.4791.3631.3911.3871.0931.1431.3371.0791.0740.8450.8960.6060.7590.7640.7550.8220.8640.9270.6480.7771.0020.7660.7030.6440.9770.8620.661.0330.7580.8830.6860.810.5380.6560.781.2090.9790.9951.2510.8421.2681.2881.7361.6611.1551.0441.7781.2011.661.861.5541.1471.9751.9431.7732.0062.0321.8092.0931.462.061
BLTHigh49020.52BABBA19432012830.7790.90.8160.9171.0071.2661.0221.0181.1261.0411.1691.2581.081.0490.991.1480.720.7830.6020.810.7110.6050.5810.3850.4750.6610.6860.4520.6680.7820.5610.6450.8130.7160.6960.4970.680.4980.460.8440.9011.3340.9820.8510.6840.6060.8110.9290.9950.670.7411.2240.9141.0011.3571.3970.8181.6571.51.1611.841.9681.7642.0861.7412.0542.4772.1051.7851.727
BLTHigh49117.44AABBA193720121180.5250.5920.6310.690.7890.8910.7790.7310.6780.5670.6670.5580.5570.5210.4310.4530.3670.4380.4790.5720.580.8520.9570.5790.7680.9980.940.9650.7141.1670.9981.171.2671.060.9650.7931.0020.8440.8441.1331.061.1810.9680.7080.5860.3940.5170.5440.5940.4510.4240.5590.3950.550.7390.6390.4820.8770.7770.6360.8830.9561.151.6261.2011.2631.7981.7291.3291.3351.5391.7821.7442.3341.9941.958
BLTHigh49117.44BABBA19342012640.5030.4920.5880.7260.7271.0350.7050.6630.6110.5710.7050.8880.7770.7680.8750.9180.7090.7240.9790.9621.0070.8220.8390.5490.7010.8960.90.9920.9971.1680.8930.8431.0780.7490.8510.6270.8040.6620.7410.9770.8750.9020.8880.9450.7590.7230.7240.8630.840.970.9861.0190.780.7851.1160.9920.7151.1791.1550.8231.3541.5171.3022.1171.351.3791.6891.4921.7411.791.6491.6591.3922.0992.1511.9281.9661.9582.295
BLTHigh49221.94AABBA192920121760.3770.3990.5670.7680.7060.6390.6010.6380.560.5510.740.9840.8740.8090.4670.6830.5790.6910.7420.7990.8160.8010.8160.5960.7690.6850.7230.6270.4470.4840.1660.3520.6530.5950.6740.5510.820.6860.741.0241.0220.7950.7720.6670.7290.5890.65811.4420.7860.6760.7320.4390.5580.7550.6980.4980.8471.1120.8751.3491.4691.5241.8031.3731.482.0611.9961.7832.3432.1352.1341.6842.4262.3741.811.8251.8121.7712.3973.4414.5633.0322.607
BLTHigh49221.94BABBA192820122340.3380.3070.3790.4150.3920.4560.4250.4610.4730.4670.6980.8410.6240.6130.4290.5590.650.5980.7050.7610.7810.8420.8240.7470.8531.1491.0621.1580.9650.9950.4560.6091.3031.0081.1040.861.1021.0251.0621.4321.4871.4121.620.9670.8280.6330.6190.6440.4880.6290.8560.8810.4670.5510.7890.8830.4941.091.1610.9621.331.3261.1241.5891.5281.3042.0341.6191.8542.0832.0712.3631.932.8782.5712.1462.1672.7382.1662.5422.8352.0662.5142.0391.872
BLTHigh493183AABBA197020122021.5951.7761.982.7072.1362.4562.0192.0362.3822.032.2572.873.2862.6552.6112.8762.7162.6922.7883.5953.4853.2283.6773.8913.1093.7933.4123.6212.7252.8942.5412.0842.7742.2752.7782.8922.9012.3472.8422.9442.3862.3121.92
BLTHigh49519.54AABBA194720121090.690.5731.0031.0180.9221.0020.9460.9731.0321.0671.0151.1591.2651.0641.0231.1950.9911.0721.0731.3281.3051.3451.2191.0691.2741.2351.191.2891.0621.2341.0871.151.7441.1851.2931.2881.5681.5651.4441.4621.431.5561.0330.6760.8640.7411.0010.9431.0710.9870.9331.4131.0291.0421.0641.3390.9911.2761.551.6741.6311.4551.2011.8441.1361.309
BLTHigh49519.54BABBA194720121090.4190.460.6180.631.1021.2751.0841.1791.1790.9110.8230.991.0940.9590.9670.9480.8521.2451.1951.3491.2911.1071.6341.4461.6281.6661.6111.8581.6691.6911.31.1051.5111.0810.7250.9361.3631.2351.1071.1821.5391.4121.0880.9761.0790.9371.0841.2441.3321.0711.4411.5351.1081.0490.9741.0060.6160.8341.4751.4281.3821.6221.9441.921.4271.347
BLTHigh49619.63AABBA194120121200.4070.4470.6910.710.6490.7020.7180.7731.0680.8520.71.1280.7920.5840.7560.5990.6440.6040.8770.930.9520.7250.7880.6780.9610.8440.9280.8670.5970.710.5820.3920.780.4390.1610.2480.3290.3210.3710.5630.6421.1362.0261.6740.7360.6781.0150.9441.3220.8810.961.070.7041.0911.3351.4820.961.2511.7261.7272.0791.9041.5762.0152.0061.7972.0752.6372.6981.9031.9541.539

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Plot Data

Tree Data

Increment Core Data

Supporting statistical/analytical files

Download supporting files such as Cofecha outputs or R code that document the analysis and resulting cross-dating statistics.

Download all Cofecha files

+ View individual files

BLTHigh_ABBA_Final.docx
Species
ABBA
Plots
BLTHigh
BLTHigh_PIRU_Final.docx
Species
PIRU
Plots
BLTHigh
BLTLow_PIRU_Final.docx
Species
PIRU
Plots
BLTLow
BLTLow_ACRU_Final.docx
Species
ACRU
Plots
BLTLow
BLTLow_ACSA_Final.docx
Species
ACSA3
Plots
BLTLow
BLTMid_PIRU_Final.docx
Species
PIRU
Plots
BLTMid
BLTMid_ACSA_Final.docx
Species
ACSA3
Plots
BLTMid
BLTMid_BEAL_Final.docx
Species
BEAL2
Plots
BLTMid
SNCHigh_ABBA_Final.docx
Species
ABBA
Plots
SNCHigh
SNCHigh_PIRU_Final.docx
Species
PIRU
Plots
SNCHigh
SNCLow_PIRU_Final.docx
Species
PIRU
Plots
SNCLow
SNCLow_ACRU_Final.docx
Species
ACRU
Plots
SNCLow
SNCLow_ACSA_Final.docx
Species
ACSA3
Plots
SNCLow
SNCMid_PIRU_Final.docx
Species
PIRU
Plots
SNCMid
SNCMid_ACSA_Final.docx
Species
ACSA3
Plots
SNCMid
SNCMid_BEAL_Final.docx
Species
BEAL2
Plots
SNCMid
USPHigh_ABBA_Final.docx
Species
ABBA
Plots
USPHigh
USPHigh_PIRU_Final.docx
Species
PIRU
Plots
USPHigh
USPLow_PIRU_Final.docx
Species
PIRU
Plots
USPLow
USPLow_ACRU_Final.docx
Species
ACRU
Plots
USPLow
USPLow_ACSA_Final.docx
Species
ACSA3
Plots
USPLow
USPMid_PIRU_Final.docx
Species
PIRU
Plots
USPMid
USPMid_ACSA_Final.docx
Species
ACSA3
Plots
USPMid
USPMid_BEAL_Final.docx
Species
BEAL2
Plots
USPMid

Crew:

Latitude:

Longitude:

Site Description:

Tree ID:

Species:

Status:

DBH:

Crown Position:

Vigor:

Dieback:

Species:

Series Intercorrelation:

Average Mean Sensitivity:

Standard Deviation:

Autocorrelation:

Number of dated series:

Segment Length Tested:

Number of Problem Segments:

Percent Problem Segments:

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