Oecologia
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Changes in gas exchange characteristics and water use efficiency of mangroves in response to salinity and vapour pressure deficit
Oecologia - Tập 79 - Trang 38-44 - 1989
Measurements were made of the photosynthetic gas exchange properties and water
use efficiency of 19 species of mangrove in 9 estuaries with different salinity
and climatic regimes in north eastern Australia and Papua New Guinea. Stomatal
conductance and CO2 assimilation rates differed significantly between species at
the same locality, with the salt-secreting species, Avicennia marina,
consistentl...
Ecological determinants of American crow mortality due to West Nile virus during its North American sweep
Oecologia - Tập 163 - Trang 903-909 - 2010
We examined the ecological factors influencing population declines in American
crows (Corvus brachyrhynchos) as they were initially exposed to West Nile virus
(WNV), a pathogen first detected in the US in 1999 that has since become one of
North America’s most prevalent vector-borne pathogens. The strongest effects
were initial crow population density (denser populations were more likely to
suffer ...
Biomass production and nitrogen content of C3- and C4- grasses in pure and mixed culture with different nitrogen supply
Oecologia - - 1987
The evolution of crassulacean acid metabolism inAeonium inferred from carbon isotope composition and enzyme activities
Oecologia - Tập 91 - Trang 548-553 - 1992
Variation in crassulacean acid metabolism (CAM) was investigated in
thirtyAeonium species under controlled, well-watered conditions. Carbon isotope
ratios and the specific activities of the CAM enzymes phosphoenolpyruvate
carboxylase (PEPC) and malic enzyme ME_ are highly correlated and indicate a
large variation in CAM. The δ13C values range from -13.6 to -27.1‰; PEPC and ME
activities vary seven...
Is there a feedback between N availability in siliceous and calcareous soils and Cistus albidus leaf chemical composition?
Oecologia - Tập 136 Số 2 - Trang 183-192 - 2003
N2 fixation estimates in real-time by cavity ring-down laser absorption spectroscopy
Oecologia - Tập 168 Số 2 - Trang 335-342 - 2012
Generalist birds govern the seed dispersal of a parasitic plant with strong recruitment constraints
Oecologia - Tập 176 - Trang 139-147 - 2014
Mistletoes constitute instructive study cases with which to address the role of
generalist consumers in the study of plant–animal interactions. Their ranges of
safe sites for recruitment are among the most restricted of any plant;
therefore, frugivores specializing in mistletoe have been considered almost
indispensable for the seed dispersal of these parasitic plants. However, the
absence of such ...
Ecophysiological studies on the shrub Vaccinium myrtillus L. taken from a wide altitudinal range
Oecologia - Tập 70 - Trang 580-586 - 1986
Observations have been made on the gas exchange and morphology of Vaccinium
myrtillus taken from altitudes of 200 m, 610 m and 1,100 m along an altitudinal
gradient in central Scotland. Under saturating irradiance, optimum temperatures
and a range of vapour pressure deficits, photosynthetic rate and stomatal
conductance increased with the altitude of origin of the populations. Correlated
with thes...
Individual and interactive effects of chronic anthropogenic disturbance and rainfall on taxonomic, functional and phylogenetic composition and diversity of extrafloral nectary-bearing plants in Brazilian Caatinga
Oecologia - Tập 198 - Trang 267-277 - 2021
Chronic anthropogenic disturbance (CAD) and climate change represent two of the
major threats to biodiversity globally, but their combined effects are not well
understood. Here we investigate the individual and interactive effects of
increasing CAD and decreasing rainfall on the composition and taxonomic (TD),
functional (FD) and phylogenetic diversity (PD) of plants possessing extrafloral
nectari...
Flowering phenology in the central highland of Iceland and implications for climatic warming in the Arctic
Oecologia - Tập 114 - Trang 43-49 - 1998
The cool and short growing season that characterizes Arctic climates puts severe
constraints on life cycles and reproduction in the Arctic flora. The timing of
flowering is particularly critical and may affect both breeding system and
reproductive success through the heavy penalties associated with later
flowering. An 11-year study of 75 species in the central highland of Iceland
showed that the o...
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