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John Boone Kauffman

John Boone Kauffman
Oregon State University and Illhaee Sciences International

PhD Forest Ecology

About

181
Publications
93,697
Reads
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18,856
Citations
Citations since 2016
46 Research Items
9957 Citations
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201620172018201920202021202205001,0001,500
Additional affiliations
January 2012 - present
Center for International Forestry Research
Position
  • Senior Associate
July 2011 - present
Oregon State University
Position
  • Professor (Full)
Description
  • Global Change Biology Ecological Restoration Wetlands and Riparian Ecology Continuing education courses throughout the world
September 2003 - December 2011
US Forest Service
Position
  • Managing Director
Education
June 1983 - November 1986
University of California, Berkeley
Field of study
  • Forest Ecology

Publications

Publications (181)
Article
Full-text available
Both freshwater floodplain (va ́rzeas and igapo ́s) forests and brackish-saline mangroves are abundant and well-described ecosystems in Brazil.1 However, an interesting and unique wetland forest exists in the Amazon Delta where extensive mangroves occur in essentially freshwater tidal environments. Unlike the floodplain forests found upriver, the h...
Article
Full-text available
Public lands of the USA can play an important role in addressing the climate crisis. About 85% of public lands in the western USA are grazed by domestic livestock, and they influence climate change in three profound ways: (1) they are significant sources of greenhouse gases through enteric fermentation and manure deposition; (2) they defoliate nati...
Article
Full-text available
Mangrove forests are important carbon sinks, and this is especially true for Indonesiawhere about 24% of the world's mangroves exist. Unfortunately, vast expanses ofthese mangroves have been deforested, degraded or converted to other uses result-ing in significant greenhouse gas emissions. The objective of this study was to quan-tify the climate ch...
Article
Full-text available
Riparian ecosystem restoration has been accomplished through exclusion of livestock using corridor fencing along hundreds of kilometers of streams in the western United States, for the benefit of riparian-obligate wildlife and endangered fishes. Yet, there are limited scientific studies that have evaluated more than short-term shifts in vegetation...
Article
Full-text available
Deforested and converted tropical peat swamp forests are susceptible to fires and are a major source of greenhouse gas (GHG) emissions. However, information on the influence of land-use change (LUC) on the carbon dynamics in these disturbed peat forests is limited. This study aimed to quantify soil respiration (heterotrophic and autotrophic), net p...
Article
Drought events may induce mangrove mortality and dieback events worldwide as a result of climate extremes. As mangroves sequester large quantities of carbon, quantifying the losses of these stocks following climate disturbances may guide wetland governance strategies globally. In Southeast Brazil, we determined the total ecosystem carbon stocks (TE...
Preprint
Full-text available
Riparian ecosystem restoration has been accomplished through exclusion of livestock using corridor fencing along hundreds of kilometers of streams in the western USA, for the benefit of riparian-obligate wildlife and endangered fishes. Yet few studies have evaluated shifts in the vegetation composition and diversity following the cessation of lives...
Article
Full-text available
Mangroves have among the highest carbon densities of any tropical forest. These “blue carbon” ecosystems can store large amounts of carbon for long periods, and their protection reduces greenhouse gas emissions and supports climate change mitigation. Incorporating mangroves into Nationally Determined Contributions to the Paris Agreement and their v...
Chapter
Full-text available
Conserving high carbon density tropical peat forests is one of the most cost-efficient strategies for climate change mitigation at national and global levels. Over past decades, large areas of tropical peat forests have been converted to oil palm plantation in Indonesia resulting in significant carbon emissions into the atmosphere. Here, we quantif...
Article
Full-text available
Conserving high carbon density tropical peat forests is one of the most 2 cost-efficient strategies for climate change mitigation at national and global levels. 3 Over past decades, large areas of tropical peat forests have been converted to oil palm 4 plantation in Indonesia resulting in significant carbon emissions into the atmosphere. 5 Here, we...
Preprint
Full-text available
Mangroves have among the highest carbon densities of any tropical forest. These blue carbon ecosystems can store large amounts of carbon for long periods, and their protection reduces greenhouse gas emissions and supports climate change mitigation. The incorporation of mangroves into Nationally Determined Contributions to the Paris Agreement and th...
Article
The coastal ecosystems of temperate North America provide a variety of ecosystem services including high rates of carbon sequestration. Yet, little data exist for the carbon stocks of major tidal wetland types in the Pacific Northwest, United States. We quantified the total ecosystem carbon stocks (TECS) in seagrass, emergent marshes, and forested...
Article
Full-text available
The potential of Blue Carbon as an integral part of global climate change adaptation and mitigation strategies requires quantification of drivers and rates of organic carbon (OC) burial and storage. However, there is limited recognition of how land use impacts benthic assemblages, their bioturbation potential, and OC burial in mangrove forests and...
Article
Full-text available
The structure and composition of sagebrush‐dominated ecosystems have been altered by changes in fire regimes, land use, invasive species, and climate change. This often decreases resilience to disturbance and degrades critical habitat for species of conservation concern. Basin big sagebrush (Artemisia tridentata ssp. tridentata) ecosystems, in part...
Article
Full-text available
American bison (Bison bison) numbers in northern Yellowstone National Park increased during the last two decades, while those of elk (Cervus canadensis) decreased. We undertook this study to assess the potential effects of bison on woody vegetation and channel morphology in the park's northern ungulate winter range. Based on differences in the numb...
Article
Full-text available
Mangroves sequester large quantities of carbon (C) that become significant sources of greenhouse gases when disturbed through land- use change. Thus, they are of great value to incorporate into climate change adaptation and mitigation strategies. In response, a global network of mangrove plots was established to provide policy-relevant ecological d...
Article
Full-text available
Understanding the movement of water through peat is essential for effective conservation and management strategies for peatlands. Saturated hydraulic conductivity, Ks, describes water movement through the peat profile. However, the spatial variability of Ks in tropical peatlands and the effects of land conversion on peat characteristics are poorly...
Article
Full-text available
Tropical peat swamp forests are carbon-rich ecosystems that have been threatened by high rates of land use change (LUC). Despite the ecosystem’s shifts from sequestering carbon (C) to emitting carbon, few studies have quantified the changes in ecosystem productivity associated with LUC in tropical peatlands. This study quantified net primary produc...
Article
Full-text available
Fire historically occurred across the sagebrush steppe, but little is known about how patterns of post-fire fuel accumulation influence future fire in Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) communities. To quantify change in fuel composition and structure in intact sagebrush ecosystems, we sampled 17 years following prescrib...
Article
Mangroves provide a number of important ecosystem services to humanity but their persistence is threatened from deforestation, conversion, and climate change. The Mahakam Delta was once among the largest mangrove forests in Southeast Asia comprising 2% of Indonesia’s total mangroves. Currently, about 62% of this extensive mangrove in the Mahakam De...
Article
Full-text available
In addition to the largest existing expanse of tropical forests, the Brazilian Amazon has among the largest area of mangroves in the world. While recognized as important global carbon sinks that, when disturbed, are significant sources of greenhouse gases, no studies have quantified the carbon stocks of these vast mangrove forests. In this paper, w...
Article
Full-text available
Mangroves of the semiarid Caatinga region of northeastern Brazil are being rapidly converted to shrimp pond aquaculture. To determine ecosystem carbon stocks and potential greenhouse gas emissions from this widespread land use, we measured carbon stocks of eight mangrove forests and three shrimp ponds in the Acaraú and Jaguaribe watersheds in Ceará...
Article
Full-text available
Mangrove deforestation threatens to release large stores of carbon from soils that are vulnerable to oxidation. Carbon stored in deep soils is not measured in national carbon inventories. Thus, policies on emission reductions have likely underestimated the contribution of mangrove deforestation to national emissions. Here, we estimate that emission...
Article
Full-text available
Knowledge of carbon footprints of eco- systems is important for both consumers and policy makers. In spite of differences in experimental methods, mangrove composition/structure, and land-use approaches, our study and those referenced in Henriksson et al. conclude that the carbon footprint of shrimp arising from mangrove conver- sion is about the l...
Article
Full-text available
Globally, it is recognized that blue carbon ecosystems, especially mangroves, often sequester large quantities of carbon and are of interest for inclusion in climate change mitigation strategies. While 19% of the world's mangroves are in Africa, they are among the least investigated of all blue carbon ecosystems. We quantified total ecosystem carbo...
Data
Ecosystem carbon stocks in Liberia, Senegal and Gabon (north and south). Numbers are mean stocks ± one standard error. (PDF)
Data
Characteristics of sampling locations in Liberia, Senegal, Gabon North and Gabon South. (PDF)
Article
Full-text available
Background: A large proportion of the world's tropical peatlands occur in Indonesia where rapid conversion and associated losses of carbon, biodiversity and ecosystem services have brought peatland management to the forefront of Indonesia's climate mitigation efforts. We evaluated peat volume from two commonly referenced maps of peat distribution...
Article
Artemisia tridentata ssp. vaseyana ecosystems evolved with periodic fire, but invasive grasses, conifer encroachment, fire suppression, and climate change have resulted in altered fire regimes and plant communities. Post-fire increases in invasive annual grasses such as Bromus tectorum and reductions in native vegetation are common across the sageb...
Article
Full-text available
Scientists have the difficult task of clearly conveying the ecological consequences of forest and wetland loss to the public. To address this challenge, we scaled the atmospheric carbon emissions arising from mangrove deforestation down to the level of an individual consumer. This type of quantification represents the " land-use carbon footprint "...
Article
Full-text available
Recent policy has focused on prevention of wildfire in the sagebrush steppe in an effort to protect habitat for the greater sage grouse (Centrocercus urophasianus). Historically, fire return intervals in Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) ecosystems were 50–100 yr or more, but invasive species, climate change, and a lega...
Article
Full-text available
Coastal ecosystems produce and sequester significant amounts of carbon ('blue carbon'), which has been well documented in humid and semi-humid regions of temperate and tropical climates but less so in arid regions where mangroves, marshes, and seagrasses exist near the limit of their tolerance for extreme temperature and salinity. To better underst...
Conference Paper
Full-text available
High rates of land cover change and deforestation in tropical peat swamp forests over the past few decades had been judged to increased peat decomposition rates and carbon (C) emissions from peatlands, yet this had been supported by little information. Our main objective was to estimate the C emission resulting from peat swamp forests (PSF) degrada...
Article
Tropical wetland ecosystems, especially mangroves and peatlands, are carbon (C) rich ecosystems. Globally, tropical mangroves store about 20 PgC, however, deforestation has contributed 10 % of the total global emissions from tropical deforestation, even though mangroves account for only about 0.7 % of the world?s tropical forest area (Donato et al....
Article
Full-text available
Among the many ecosystem services provided by mangrove ecosystems, their role in carbon (C) sequestration and storage is quite high compared to other tropical forests. Mangrove forests occupy less than 1 % of tropical forested areas but account for approximately 3 % of global carbon sequestration by tropical forests. Yet there remain many areas whe...
Article
Full-text available
Mangroves provide numerous ecosystem services, including biodiversity values such as nesting sites for piscivorous waterbirds. High concentrations of waterbirds at nest sites are hypothesized to affect ecosystem dynamics, yet few studies have examined their effects as a nutrient source in mangroves. We examined the effects of nutrient enrichment by...
Article
Full-text available
The global significance of carbon storage in Indonesia’s coastal wetlands was assessed based on published and unpublished measurements of the organic carbon content of living seagrass and mangrove biomass and soil pools. For seagrasses, median above- and below-ground biomass was 0.29 and 1.13 Mg C ha−1 respectively; the median soil pool was 118.1 M...
Article
Full-text available
Mangroves provide a wide range of ecosystem services, including nutrient cycling, soil formation, wood production, fish spawning grounds, ecotourism and carbon (C) storage1. High rates of tree and plant growth, coupled with anaerobic, water-logged soils that slow decomposition, result in large long-term C storage. Given their global significance as...
Chapter
Full-text available
26 2 measurIng CarBon stoCKs Vs. CarBon Pools A carbon stock is the amount of organic carbon (C org) stored in a blue carbon ecosystem, typically reported as megagrams of organic carbon per hectare (Mg C org /ha) over a specified soil depth. these stocks are determined by adding all relevant carbon pools within the investigated area. relatedly, car...
Chapter
Full-text available
40 3 general ConsIderatIons Once the details of the project and sampling requirements have been determined, field sampling of the ecosystem carbon pools can begin. Field techniques for measuring the aboveground and belowground living biomass in different ecosystems vary between mangroves, tidal salt marshes, and seagrass meadows and are described i...
Conference Paper
Background/Question/Methods The sagebrush desert is among the most endangered ecosystems in North America, due to land use changes such overgrazing by domestic livestock, invasive species, development, altered fire regimes and changing climate, which often interact to affect ecosystem structure and function. The long-term effects of domestic live...
Conference Paper
Background/Question/Methods Across much of the western United States (US), quaking aspen (Populus tremuloides) woodlands have been experiencing long-term decline. We evaluated the riparian aspen age structure (i.e., number of aspen/ha vs. year of establishment) in the high desert of southeastern Oregon (i.e., Hart Mountain National Antelope Refug...
Article
Full-text available
We determined the age structure of quaking aspen (Populus tremuloides) over the period 1850–2009 in Hart Mountain National Antelope Refuge riparian areas to evaluate potential influences of (a) livestock herbivory and (b) climate on aspen demography. We found a significant decline in aspen recruitment (p < 0.05) in the late 1800s, coincident with t...
Article
Tropical peatlands cover an estimated 440,000 km2 (~10% of global peatland area) and are significant in the global carbon cycle by storing about 40 – 90 Gt C in peat. Over the past several decades, tropical peatlands have experienced high rates of deforestation and conversion, which is often associated with lowering the water table and peat burning...
Article
Mangroves are recognized to possess a variety of ecosystem services including high rates of carbon sequestration and storage. Deforestation and conversion of these ecosystems continue to be high and have been predicted to result in significant carbon emissions to the atmosphere. Yet few studies have quantified the carbon stocks or losses associated...