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Title: Constrained tree growth and gas-exchange of seawater-exposed forests in the Pacific Northwest, USA

Journal Article · · Journal of Ecology

1. Rising sea levels under climate change may have significant impacts on coastal vegetation dynamics, yet the response of coastal forest growth, gas-exchange, and survival to seawater intrusion remains poorly documented. 2. We conducted a dendroecology study across six sites in western Washington, USA, to examine how tree growth, gas exchange (indexed by basal area increment, BAI, and wood d13C, respectively), and survival varies with seawater exposure through two approaches. First, tree core samples were collected at a site where seawater exposure started only four years prior to sampling, which allowed a cause-and-effect test of the impacts of seawater exposure on trees, and second, samples were collected at five additional sites where we compared downstream to upstream trees under current sea-level conditions. 3. At the seawater intrusion site, BAI and carbon isotope discrimination (?) decreased significantly (p < 0.01) in the year of intrusion (2014) and stayed unchanged thereafter. Four years later (2018), the percentage of recently standing dead trees in the forest was 73.0% basal area. Across the regional assessment, percentage of standing dead trees was significantly greater in downstream than upstream forests at five of the six sites (averaged 37.7±11.0% and 4.3±2.1% basal area for downstream and upstream, respectively). Growth was significantly lower (p < 0.01) at the downstream than upstream for five sites, and ? was lower for all needle-leaf trees (three sites) on the downstream compared to the upstream, but no difference was observed between downstream and upstream for broad-leaf trees (three sites). 4. Synthesis Combined, both the cause-and-effect manipulative study and the regional assessment demonstrate that seawater exposure drives reductions in growth, decreased ? of needle-leaf trees, increased mortality, and greater climate sensitivity, regardless of whether the seawater exposure is recent or long-term.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1577098
Report Number(s):
PNNL-SA-144278
Journal Information:
Journal of Ecology, Vol. 107, Issue 6
Country of Publication:
United States
Language:
English

References (59)

Plant Responses to Salt Stress: Adaptive Mechanisms journal February 2017
A multi-species synthesis of physiological mechanisms in drought-induced tree mortality journal August 2017
Mangrove forests: Resilience, protection from tsunamis, and responses to global climate change journal January 2008
Reduced growth of Alaskan white spruce in the twentieth century from temperature-induced drought stress journal June 2000
The critical amplifying role of increasing atmospheric moisture demand on tree mortality and associated regional die-off journal January 2013
Effects of Salinity on Stomatal Conductance, Photosynthetic Capacity, and Carbon Isotope Discrimination of Salt-Tolerant ( Gossypium hirsutum L.) and Salt-Sensitive ( Phaseolus vulgaris L.) C 3 Non-Halophytes journal February 1991
A dendrochronology program library in R (dplR) journal October 2008
A synthesis of radial growth patterns preceding tree mortality journal September 2016
Photosynthesis under drought and salt stress: regulation mechanisms from whole plant to cell journal July 2008
Triggers of tree mortality under drought journal June 2018
A 20th century acceleration in global sea-level rise: AN ACCELERATION IN GLOBAL SEA-LEVEL RISE journal January 2006
Physiographically sensitive mapping of climatological temperature and precipitation across the conterminous United States journal December 2008
Sea-level rise and drought interactions accelerate forest decline on the Gulf Coast of Florida, USA journal November 2007
Atmospheric CO2 and the ratio of intercellular to ambient CO2 concentrations in plants journal February 1995
Carbon Isotope Discrimination and Photosynthesis journal June 1989
Declining Radial Growth Response of Coastal Forests to Hurricanes and Nor'easters journal March 2018
Coastal Impacts Due to Sea-Level Rise journal May 2008
Tree ring evidence for limited direct CO 2 fertilization of forests over the 20th century : LIMITED CO journal September 2010
Drought induced tree mortality - a tree-ring isotope based conceptual model to assess mechanisms and predispositions journal April 2018
Stable isotopes in tree rings: towards a mechanistic understanding of isotope fractionation and mixing processes from the leaves to the wood journal June 2014
Assessing the tree health impacts of salt water flooding in coastal cities: A case study in New York City journal September 2018
Comparative organic geochemistries of soils and marine sediments journal December 1997
Responses of woody plants to flooding and salinity journal July 1997
Effects of salt water immersion caused by a tsunami on δ13C and δ18O values of Pinus thunbergii tree-ring cellulose journal February 2017
A casualty of climate change? Loss of freshwater forest islands on Florida's Gulf Coast journal July 2017
Associations between growth, wood anatomy, carbon isotope discrimination and mortality in a Quercus robur forest journal March 2011
Adaptation to salinity in mangroves: Implication on the evolution of salt-tolerance journal June 2008
Growth of aspen and white spruce on naturally saline sites in northern Alberta: Implications for development of boreal forest vegetation on reclaimed saline soils journal January 2012
Forest composition and growth in a freshwater forested wetland community across a salinity gradient in South Carolina, USA journal April 2017
Comparison of stable carbon isotope ratios in the whole wood, cellulose and lignin of oak tree-rings journal August 2003
Evaluation of the effect of the 2011 Tsunami on coastal forests by means of multiple isotopic analyses of tree-rings journal July 2018
Toward a unified theory of tidally-averaged estuarine salinity structure journal August 2004
Coastal protection from tsunamis and cyclones provided by mangrove wetlands – a review journal January 2015
Stable isotopes in tree rings journal April 2004
Mechanisms Linking Drought, Hydraulics, Carbon Metabolism, and Vegetation Mortality journal January 2011
Homeostatic Maintenance Of Ponderosa Pine Gas Exchange In Response To Stand Density Changes journal June 2006
Growth, carbon-isotope discrimination, and drought-associated mortality across a Pinus ponderosa elevational transect: CHRONIC WATER STRESS AND PONDEROSA PINE MORTALITY journal January 2010
Carbon isotope discrimination and growth response of old Pinus ponderosa trees to stand density reductions journal April 2003
Responses of Coastal Wetlands to Rising sea Level journal October 2002
Evaluating physiological responses of plants to salinity stress journal October 2016
Long-term physiological and agronomic responses of mandarin trees to irrigation with saline reclaimed water journal March 2016
Leaf Water Relations and Net Gas Exchange Responses of Salinized Carrizo Citrange Seedlings during Drought Stress and Recovery journal June 2007
Sea level rise and South Florida coastal forests journal May 2011
Recent unprecedented tree-ring growth in bristlecone pine at the highest elevations and possible causes journal November 2009
The driving forces of porewater and groundwater flow in permeable coastal sediments: A review journal February 2012
Linking stable oxygen and carbon isotopes with stomatal conductance and photosynthetic capacity: a conceptual model journal November 2000
Effects of the interaction between vapor-pressure deficit and salinity on growth and photosynthesis of Cucumis sativus seedlings under different CO2 concentrations journal June 2017
Rate of tree carbon accumulation increases continuously with tree size journal January 2014
Annual Growth Patterns of Baldcypress (Taxodium distichum) Along Salinity Gradients journal May 2015
U.S. Pacific coastal wetland resilience and vulnerability to sea-level rise journal February 2018
Increased intrinsic water-use efficiency during a period with persistent decreased tree radial growth in northwestern China: Causes and implications journal July 2012
Evergreen Coniferous Forests of the Pacific Northwest journal June 1979
Comparison of δ 18 O and δ 13 C values between tree-ring whole wood and cellulose in five species growing under two different site conditions : Comparing δ journal October 2015
Temperature as a potent driver of regional forest drought stress and tree mortality journal September 2012
Forest responses to increasing aridity and warmth in the southwestern United States journal December 2010
Sea-Level rise and Coastal Forest Retreat on the west Coast of Florida, usa journal September 1999
A simple method for cross-dating increment cores from living trees journal March 1991
Growth and physiological responses of two mangrove species (Bruguiera gymnorrhiza and Kandelia candel) to waterlogging journal June 2003
Growth stress response to sea level rise in species with contrasting functional traits: A case study in tidal freshwater forested wetlands journal November 2018

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