Harnessing Conserved Land for Science and Adaptive Management
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Transcript of Harnessing Conserved Land for Science and Adaptive Management
Harnessing Conserved Land for Science and Adaptive Management
David A. Orwig
(monitoring component)
Importance of science monitoring effort
Emerging network of groups in NE
Protocol for long-term forest change
Case studies of 2 groups
Additional resources to assist with effort
Overview of Stewardship Science:
New England has ~ 33 million acres of forest
Varied management approaches- how will they change over time?!
W and W framework of actively managed woodlands and wildland reservesprovides major scientific and educational opportunitiespromotes sound stewardship
Documenting current forest structure & long-term dynamics of diverse forestsEvaluating the consequences of diverse management compared to reserves
C storage/annual uptakeinvasive species controltimber production
We initiated a wide-ranging forest monitoring program to be used by and attract participation from a diverse array of landowners, organizations, and researchers so that they can provide the rigorous long-term data needed
Emerging W & W Stewardship Science network
8 pilot sites, diverse partners: collaborations between private citizens, towns, land trusts, conservation organizations, foundations, universities, and state governments.
The sites represent a wide range of sizes and forest types located in remote wildlands to rural and suburban woodland locations. Varied objectives
All used W & W science protocol
Over 450 plots established!
Tracking forest change- how to get started
Develop well-defined objectives, clearly articulated goals(e.g., contrast the dynamics of harvested and unharvested areas; serve as reference site to track changes over time)
Consider appropriate sampling strategy (intensity, plot location)usually proportional to size of study area(e.g., 1 plot per 50 – 100 acres)based on time, availability of personnel; objectives
We propose a stratified-random sample, plots are randomly located based on one or more key factors: forest type, forest age, management type etc.)Should be representative of forest of interest
Advantage: system tailored to individual organizations
Stewardship Science Sampling Protocol
Based on a series of permanent plots (20 x 20 m in size); designed to be:
Consistent: among sites and across time
Applicable: across range of forest types
Inexpensive: low cost, allows repeat sampling 5-10 yrs
Useful: measurements of key forest characteristics
Expandable: allows for more in-depth analyses with interest and expertise
Protocol methodsFor each plot, record site information (elevation, slope, aspect)photograph plot and take notes on plot features (gps location)
Sampling attributes (within 20 x 20 m plots)
measure all standing trees >2.5 cm diameter at breast height (dbh 1.37 m)by species and dbh; record as live or dead, crown position
Tally all saplings (> 1.37 m tall and < 2.5 cm dbh) by species;
Tally all seedlings within a 5 x 5 m subplot
List all vascular plants within entire plot; rough estimate of cover
Recommend : inventory of coarse woody debris (details on web site)
re-sampling every 5 years
submit data to interactive web site
Case study #1: South Petersham Conservation Partnership Worcester Co, MA
Harvard University, The Trustees of Reservations, and MassachusettsAudubon Society
Harvard Forest (est. 1907) has a 3500 acre field laboratory and classroomused for a variety of scientific and educational studies, conservation,and recreation across ownerships in Petersham and central MA.
Established monitoring system that incorporates reserves and managed lands
Major objectives: 1) Document long-term re-wilding of the landscape2)Create a network of sites to examine mechanisms, driving factors, and
ecosystem characteristics (e.g., nutrient cycling )3)Measure forest dynamics associated with major environmental changes
and ecological processes4)Evaluate long-term changes in vegetation associated with forest management
(selective harvesting and conversions of tree plantations to native species)
Quabbin Reservoir
DCRW
DFG
South Petersham Conservation Partnership- ~ 4000 acres embedded in landscape of protected land with various owners
Approach
Plots located in a stratified designto sample variation in vegetation,Land-use history, soils, and future management.
Three groups interested in forming a reserve, with minimal management, allowing natural processesto dominate
Data can be compared with adjacent managed land
South Petersham Conservation Partnership (con’t)
Case study #2: Highstead Fairfield County, CT
Small, private conservation organization With commuting distance of NYC
135 acres of protected woodlands, extensive meadows and pond
In landscape with other conservation orgs(The Redding Land Trust, Town of Redding, The Nature Conservancy, State of CT, private Individuals; 30% town land protected)
Highstead (con’t.)
Highstead staff initiated long-term sampling effort to: Establish baseline sampling
Evaluate modern vegetation variation in relation to env. conditions, soils
Measure the intensity and impact of deer browse, invasive exotic plants
Approach: Selected a systematic grid for plots to cover all forest areas100 plots established and permanently marked 110 plots established on 12 adjacent ownerships with goal of resampling every 10 years.
Highstead regional role of promoting Stewardship Science
Recently held a W & W Stewardship Science workshop
Highstead ecologist, Ed Faison, regional representative
Discussed protocol, aided participants in plot establishment and sampling
Citizen Science can be a benefit to Conservation efforts
W & W Stewardship Science Web site:http://harvardforest.fas.harvard.edu/wwscience/
Serve as valuable reference for Initiating plots- step by step methodsand manual; example data sheets
Data submitted from groups across New England; emerging open-access database
Highlight the growing network of usersIn NE advancing scientific, educationaland management objectives
W & W Stewardship Science paper Forthcoming!
Conclusions
W and W vision creates valuable scientific and educational opportunities
Using a simple, inexpensive protocol, diverse organizations are making important forest measurements characterizing their lands, initiating long-term monitoring
Through interactive website, plot-based data entered, analyzed, and archived
Will form robust, regional data set that will yield invaluable insights into how Landscapes continue to “rewild” and are shaped by a changing environment
Interested groups can get started with their own plots, contact a regional rep([email protected])
Acknowledgements
Co-authors of Science document and manual: David Foster, Brian Hall, Ed Faison, Emily Silver Jonathan ThompsonClarisse Hart, Glenn Motzkin, Emery Boose, Julie Pallant, Matt Kelty, Rick Van de Poll
NSF LTER program
Harvard Forest REU program
Brandeis University
Highstead
Partners: Blue Hills Foundation, Northeast Wilderness Trust, Forest Society of Maine, Maine Bureau of Parks and Lands, Massachusetts Audubon Society, The Trustees of Reservations, Polly Hill Arboretum, MA and CT Chapters of The Nature Conservancy, Town of Weston, MA and Town of Redding, CT