John Willis

Dr. John Willis

orcid

Research Focus & Metrics

Academic Career Length

23Years (2004-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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5 March 2022 in Global Change Biology
Verified
Journal Article
Open access
PDF file
AHAndrew Hacket‐Pain
Andrew Hacket‐Pain
JFJessie J. Foest
Jessie J. Foest
IPIan S. Pearse
Ian S. Pearse
JLJalene M. LaMontagne
Jalene M. LaMontagne
WKWalter D. Koenig
Walter D. Koenig
DADavide Ascoli
Davide Ascoli
Significant gaps remain in understanding the response of plant reproduction to environmental change. This is partly because measuring reproduction in long‐lived plants requires direct observation over many years and such datasets have rarely been made publicly available. Here we introduce MASTREE+, a data set that collates reproductive time‐series data from across the globe and makes these data freely available to the community. MASTREE+ includes 73,828 georeferenced observations of annual reproduction (e.g. seed and fruit counts) in perennial plant populations worldwide. These observations consist of 5971 population‐level time‐series from 974 species in 66 countries. The mean and median time‐series length is 12.4 and 10 years respectively, and the data set includes 1122 series that extend over at least two decades (≥20 years of observations). For a subset of well‐studied species, MASTREE+ includes extensive replication of time‐series across geographical and climatic gradients. Here we describe the open‐access data set, available as a.csv file, and we introduce an associated web‐based app for data exploration. MASTREE+ will provide the basis for improved understanding of the response of long‐lived plant reproduction to environmental change. Additionally, MASTREE+ will enable investigation of the ecology and evolution of reproductive strategies in perennial plants, and the role of plant reproduction as a driver of ecosystem dynamics.

1 September 2019 in Forests
Verified
Journal Article
Open access
PDF file
JWJohn Willis
John Willis
JGJason Gordon
Jason Gordon
STShaun Tanger
Shaun Tanger
Michael BlazierMichael Blazier
Michael Blazier
ASAndrew Brady Self
Andrew Brady Self
ABArnold Brodbeck
Arnold Brodbeck
Forestry in the Southeastern United States has long focused on converting natural stands into pine plantations or managing exclusively for hardwoods. Little consideration has been given to managing stands containing pine and hardwood mixtures, as these stands were considered inferior in terms of productivity and/or quality. Recent declines in small-diameter softwood markets and logging workforce have, however, begun to stress the traditional pine production model in some locations, raising interest in management alternatives. Here, we provide biological, economic, and sociocultural rationale for pine-hardwood mixtures as an alternative strategy for landowners with multiple management objectives. To support this idea, an illustration compares a mixed-species plantation to pine and hardwood monocultures under a variety of simulated scenarios to demonstrate growth potential and economic and biological resilience. Moreover, to identify scenarios where managing pine-hardwood mixtures would be most appropriate, and to help conceptualize landowner interest in mixed stands, we present a guide combining biological, economic, and sociocultural factors that we anticipate influencing the adoption of mixed-stand management. The aim of this conceptual paper is not to suggest that mixed-species stand management should become the dominant management paradigm; rather, we seek to encourage researchers and land managers to consider it as part of the broader silvicultural toolbox.

1 November 2005 in Water Environment Research
Verified
Journal Article
Closed access
PDF file
MAMichael D. Aitken
Michael D. Aitken
GWGlenn W. Walters
Glenn W. Walters
PCPhillip L. Crunk
Phillip L. Crunk
JWJohn Willis
John Willis
JFJoseph B. Farrell
Joseph B. Farrell
BTBilly G. Turner
Billy G. Turner

1 January 2021 in Applied Vegetation Science
Verified
Journal Article
Closed access
PDF file
JWJohn Willis
John Willis
DSDavid K. Schnake
David K. Schnake
CDChristopher S. DePerno
Christopher S. DePerno
MLMarcus A. Lashley
Marcus A. Lashley
BWBranson Wetzstein
Branson Wetzstein
JYJustin Yow
Justin Yow

24 March 2019 in Restoration Ecology
Verified
Journal Article
Closed access
PDF file
JWJohn Willis
John Willis
DSDavid K. Schnake
David K. Schnake
BWBranson Wetzstein
Branson Wetzstein
JYJustin Yow
Justin Yow
DGDaniel Guinto
Daniel Guinto
MLMarcus A. Lashley
Marcus A. Lashley

27 November 2023 in New Phytologist
Verified
Journal Article
Closed access
JCJeffery B. Cannon
Jeffery B. Cannon
BRBrandon T. Rutledge
Brandon T. Rutledge
JPJoshua Puhlick
Joshua Puhlick
JWJohn Willis
John Willis
DBDale G. Brockway
Dale G. Brockway