Global Change Biology
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Atmospheric nitrogen deposition has caused nitrogen enrichment and eutrophication of lakes in the northern hemisphere
Global Change Biology - Tập 12 Số 4 - Trang 635-643 - 2006
AbstractWe compiled chemical data and phytoplankton biomass (PB) data
(chlorophyll a) from unproductive lakes in 42 different regions in Europe and
North America, and compared these data to inorganic nitrogen (N) deposition over
these regions. We demonstrate that increased deposition of inorganic N over
large areas of Europe and North America has caused elevated concentrations of
inorganic N in la...
Multimodel ensembles improve predictions of crop–environment–management interactions
Global Change Biology - Tập 24 Số 11 - Trang 5072-5083 - 2018
AbstractA recent innovation in assessment of climate change impact on
agricultural production has been to use crop multimodel ensembles (MMEs). These
studies usually find large variability between individual models but that the
ensemble mean (e‐mean) and median (e‐median) often seem to predict quite well.
However, few studies have specifically been concerned with the predictive
quality of those en...
Multimodel ensembles of wheat growth: many models are better than one
Global Change Biology - Tập 21 Số 2 - Trang 911-925 - 2015
AbstractCrop models of crop growth are increasingly used to quantify the impact
of global changes due to climate or crop management. Therefore, accuracy of
simulation results is a major concern. Studies with ensembles of crop models can
give valuable information about model accuracy and uncertainty, but such studies
are difficult to organize and have only recently begun. We report on the largest
e...
Climate change scenarios experiments predict a future reduction in small pelagic fish recruitment in the Humboldt Current system
Global Change Biology - Tập 19 Số 6 - Trang 1841-1853 - 2013
AbstractThe Humboldt Current System (HCS) sustains the world′s largest small
pelagic fishery. While a cooling of this system has been observed during recent
decades, there is debate about the potential impacts of rising atmospheric CO2
concentrations on upwelling dynamics and productivity. Recent studies suggest
that under increased atmospheric CO2 scenarios the oceanic stratification may
strongly...
Scaling up the diversity–resilience relationship with trait databases and remote sensing data: the recovery of productivity after wildfire
Global Change Biology - Tập 22 Số 4 - Trang 1421-1432 - 2016
AbstractUnderstanding the mechanisms underlying ecosystem resilience – why some
systems have an irreversible response to disturbances while others recover – is
critical for conserving biodiversity and ecosystem function in the face of
global change. Despite the widespread acceptance of a positive relationship
between biodiversity and resilience, empirical evidence for this relationship
remains fai...
Scaling environmental change through the community‐level: a trait‐based response‐and‐effect framework for plants
Global Change Biology - Tập 14 Số 5 - Trang 1125-1140 - 2008
AbstractPredicting ecosystem responses to global change is a major challenge in
ecology. A critical step in that challenge is to understand how changing
environmental conditions influence processes across levels of ecological
organization. While direct scaling from individual to ecosystem dynamics can
lead to robust and mechanistic predictions, new approaches are needed to
appropriately translate ...
Bivalve aquaculture‐environment interactions in the context of climate change
Global Change Biology - Tập 22 Số 12 - Trang 3901-3913 - 2016
AbstractCoastal embayments are at risk of impacts by climate change drivers such
as ocean warming, sea level rise and alteration in precipitation regimes. The
response of the ecosystem to these drivers is highly dependent on their
magnitude of change, but also on physical characteristics such as bay morphology
and river discharge, which play key roles in water residence time and hence
estuarine fu...
Seasonal and interannual variation in carbon dioxide exchange and carbon balance in a northern temperate grassland
Global Change Biology - Tập 8 Số 7 - Trang 599-615 - 2002
AbstractNet ecosystem carbon dioxide (CO2) exchange (NEE) was measured in a
northern temperate grassland near Lethbridge, Alberta, Canada for three growing
seasons using the eddy covariance technique. The study objectives were to
document how NEE and its major component processes—gross photosynthesis (GPP)
and total ecosystem respiration (TER)—vary seasonally and interannually, and to
examine how ...
Severe drought effects on ecosystem CO2 and H2O fluxes at three Mediterranean evergreen sites: revision of current hypotheses?
Global Change Biology - Tập 8 Số 10 - Trang 999-1017 - 2002
AbstractEddy covariance and sapflow data from three Mediterranean ecosystems
were analysed via top‐down approaches in conjunction with a mechanistic
ecosystem gas‐exchange model to test current assumptions about drought effects
on ecosystem respiration and canopy CO2/H2O exchange. The three sites include
two nearly monospecific Quercus ilex L. forests – one on karstic limestone
(Puéchabon), the ot...
Temperature controls ecosystem CO2 exchange of an alpine meadow on the northeastern Tibetan Plateau
Global Change Biology - Tập 15 Số 1 - Trang 221-228 - 2009
AbstractAlpine ecosystems are extremely vulnerable to climate change. To address
the potential variability of the responses of alpine ecosystems to climate
change, we examined daily CO2 exchange in relation to major environmental
variables. A dataset was obtained from an alpine meadow on the Qinghai‐Tibetan
Plateau from eddy covariance measurements taken over 3 years (2002–2004). Path
analysis sho...
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