Abstract:
:Ecophysiological differences related to photosynthesis were compared in holm oak Quercus ilex leaves from undisturbed holm-oak vegetation, resprouts after fire and resprouts after tree-fell. No significant differences in any parameter measured were observed between the two kinds of resprout throughout the first growing season following disturbance. Resprouting leaves showed lower carbon isotope discrimination (Δ) and intercellular CO2 concentration (p i), and higher photosynthesis, leaf conductance and transpiration rates than leaves from undisturbed stands. Nitrogen, soluble protein content and ribulose bisphosphate carboxylase (RuBPCase) activity were 88%, 96% and 45% higher respectively, in both kinds of resprout. The results indicate that photosynthetic capacity, rather than stomatal conductance, is the limiting factor in photosynthesis in resprouts, Chlorophyll content and chlorophyll a/b ratio did not differ between resprouts and undisturbed leaves, indicating that the observed differences were not a result of differences in light environment during leaf development. Leaf mass per area (LMA), was 80% higher in the resprouts, and was negatively related (r=-0.86) to Δ and positively related (r=0.87) to N content. Enhanced carbon assimilation after disturbances resulted in higher water use efficiency, as indicated by lower Δ values in the resprouts. We conclude that the cause of defoliation was not relevant in the physiology of the resprouts, suggesting the importance of underground organs.
journal_name
Oecologiajournal_title
Oecologiaauthors
Fleck I,Grau D,Sanjosé M,Vidal Ddoi
10.1007/BF00328730subject
Has Abstractpub_date
1996-02-01 00:00:00pages
286-292issue
3eissn
0029-8549issn
1432-1939pii
10.1007/BF00328730journal_volume
105pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract::Understanding how communities respond to extreme climatic events is important for predicting the impact of climate change on biodiversity. The plant vigor and stress hypotheses provide a theoretical framework for understanding how arthropods respond to stress, but are rarely tested at the community level. Following a ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1684-3
更新日期:2010-11-01 00:00:00
abstract::This is the first in a series of papers on the growth, photosynthetic rate, water and nutrient relations, root distribution and mycorrhizal frequency of two Norway spruce forests at different stages of decline. One of the stands was composed of green trees only while the other included trees ranging in appearance from...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378810
更新日期:1988-02-01 00:00:00
abstract::Increased nitrogen (N) deposition, resulting from the combustion of fossil fuels, production of synthetic fertilizers, growth of N(2)-fixing crops and high-intensity agriculture, is one of the anthropogenic factors most likely to cause global biodiversity changes over the next century. This influence may be especially...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1818-7
更新日期:2011-01-01 00:00:00
abstract::A major goal of modern ecology is to understand macroecological patterns based on their mechanistic underpinnings. The metabolic theory of ecology predicts a monotonic increase of biodiversity with temperature based on the principles of metabolism. For marine copepods, observations have shown that while biodiversity d...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2313-0
更新日期:2012-10-01 00:00:00
abstract::Facultative diapause should be favoured by natural selection in temporary variable habitats. Diapause patterns are evolutionary constrained because producing diapause is resource demanding, which might have implications for competitive dynamics and competitor coexistence through mechanisms such as the storage effect. ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-014-3172-7
更新日期:2015-01-01 00:00:00
abstract::1.) The daily ration required to maintain a population growth rate, r m, of zero (threshold ration) increased with increasing Asplanchna body mass. This relationship is described by the equation T=0.342 W0.797 where T=threshold ration (μg day-1 dry mass) and W=Asplanchna body mass (μg adult-1 dry mass). 2.) The thresh...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00379132
更新日期:1984-11-01 00:00:00
abstract::We analysed the spatial and temporal pattern of egg laying in great spotted cuckoo females using microsatellite typing to determine parentage of the eggs and nestlings found in host (magpie) nests. The results showed that there were no exclusive laying territories in the study area. Cases of multiparasitism could be d...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050660
更新日期:1998-11-01 00:00:00
abstract::Amphibian life history traits are affected by temperature and precipitation. Yet, connecting these relationships to population growth, especially for multiple populations within a species, is lacking and precludes our understanding of amphibian population dynamics and distributions. Therefore, we constructed integral ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-020-04731-8
更新日期:2020-08-01 00:00:00
abstract::Fourteen temperate, submerged macrophytes were cultivated in the laboratory at high DIC levels (3.3-3.8 mM), 10.4-14.4 mol photons (PAR) m-2 d-1 and 15°C. Photosynthesis at photosaturation ranged between 0.59 and 17.98 mg O2 g-1 DW h-1 at ambient pH (8.3) and were markedly higher between 1.76 and 47.11 mg O2 g-1 DW h-...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00377085
更新日期:1989-11-01 00:00:00
abstract::Animal-pollinated plants can be susceptible to changes in pollinator availability. Honeydew-producing treehoppers frequently occur on inflorescences, potentially enhancing ant-mediated negative effects on pollination services. However, the effect of ant-attended, honeydew-producing insects on plant reproduction remain...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-017-4045-7
更新日期:2018-03-01 00:00:00
abstract::Current theory predicts that in low-density, seed-limited plant populations, seed predation will be more important than competition in determining the number of individuals that reach maturity. However, when plant density is high, competition for microsites suitable for establishment and growth is expected to have a r...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-003-1350-0
更新日期:2003-11-01 00:00:00
abstract::The transition between wintertime net carbon loss and springtime net carbon assimilation has an important role in controlling the annual rate of carbon uptake in coniferous forest ecosystems. We studied the contributions of springtime carbon assimilation to the total annual rate of carbon uptake and the processes invo...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-005-0169-2
更新日期:2005-11-01 00:00:00
abstract::Selective feeding by herbivores on establishing seedlings has been suggested to affect genotype frequencies in several plant populations. The existence of genotypes susceptible to herbivores calls for an explanation in such populations. In the present study we assessed the choice of multiple herbivores, field voles (M...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-001-0816-1
更新日期:2002-02-01 00:00:00
abstract::Among birds of the Bismarck Archipelago, only certain combinations of the species in a guild coexist on islands, and some species that are very similar ecologically have mutually exclusive distributions. Diamond (1975) interpreted these patterns as biologically significant, involving effects such as competition. Conno...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00349013
更新日期:1982-01-01 00:00:00
abstract::Atriplex sagittata is a heterocarpic species producing three types of fruits which differ in morphology and ecological properties. This study focused on variation in biomass allocation into particular fruit types under different density and fertilization levels. The reduction in total weight under stressful conditions...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420050761
更新日期:1999-04-01 00:00:00
abstract::Enhanced ultraviolet-B (UV-B) radiation may have multiple effects on both plants and animals and affect plant-herbivore interactions directly and indirectly by inducing changes in host plant quality. In this study, we examined combined effects of UV-B and herbivory on the defence of the mountain birch (Betula pubescen...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-010-1658-5
更新日期:2010-09-01 00:00:00
abstract::Gynoparae (autumn migrants) of the bird cherry-oat aphid,Rhopalosiphum padi (L.), were not found to land randomly on their primary host,Prunus padus L. Some trees, although within a few metres of heavily infested trees, were not colonized at all. This phenomenon occurs regularly from year to year.The reasons for this ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF01036740
更新日期:1986-09-01 00:00:00
abstract::In the Central Negev, the arido-active Hammada scoparia (Chenopodiaceae) is mainly distributed in runnels and loessial plains of the wadis and exists with fewer and smaller individuals on slopes and tops of the neighboring hills. At the end of the dry season, water relations and chloride content of plants from these h...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00345961
更新日期:1976-12-01 00:00:00
abstract::Mark-release-recapture techniques were adapted for studying the territorial black swallowtail butterfly, Papitio polyxenes. Population sizes were similar from year to year and somewhat higher in second broods. The overall sex ratio was a male-biased 4.0:1. Of 340 marked males, 45.3% were recaptured an average of 5.7 t...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378854
更新日期:1983-09-01 00:00:00
abstract::Competition for water surface prey between fish (Priapichtus annectens: Poeciliidae) and water striders (Potamobates unidentatus: Gerridae) was studied in the laboratory and in pools in a small tropical stream. Laboratory experiments showed that fish depressed activity and foraging success of water striders. Large fis...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317841
更新日期:1992-12-01 00:00:00
abstract::The hypothesis that cooperative breeding entails a cost in terms of transmission of ectoparasites was tested by a comparative analysis among sympatric Australian passerines. The general trend found using the allometry method and outgroup analysis indicates that contagious ectoparasites are not more common on cooperati...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00317470
更新日期:1992-12-01 00:00:00
abstract::Hypotheses about the influence of intraspecific density and available cover on home range size (=mean activity radius) of a plethodontid salamander (Desmognathus monticola) were tested by field experimentation from June 1980 to October 1981. A second order mountain stream in southwestern North Carolina was marked into...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00378306
更新日期:1985-06-01 00:00:00
abstract::While morphological differences such as tongue length are often featured as drivers of pollinator floral preferences, differences in chemical detection and tolerance to secondary compounds may also play a role. We sought to better understand the role of secondary compounds in floral preference by examining visitation ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-020-04701-0
更新日期:2020-07-01 00:00:00
abstract::Plasticity in water-use efficiency (WUE) was examined in populations of Picea glauca (Moench) Voss and P. sitchensis (Bong.) Carr. and their natural hybrids from an ecocline along the Skeena Valley, British Columbia, which runs from the dry continental interior (P. glauca) to the wet maritime Pacific coast (P. sitchen...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s004420100659
更新日期:2001-08-01 00:00:00
abstract::The duration times of the eggs, nauplii and copepodites of Cyclops vicinus and Eudiaptomus gracilis were obtained, by experiment, at 5, 10, 15 and 20°C. In contrast with previously published work on copepod development, the ovigerous females, used in the cultures at these temperatures, were removed from a water storag...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00344742
更新日期:1974-12-01 00:00:00
abstract::This study links summer foraging and scatter-hoarding to winter larder-hoarding and winter survival in yellow pine chipmunks (Tamias amoenus) by comparing patterns of time allocation and winter larder contents in 2 years with very different levels of resource availability. In 2003, seed production and the number of tr...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-008-1072-4
更新日期:2008-08-01 00:00:00
abstract::The logistic equation has been used as the basis of two distinct models of population dynamics, a resource limited model and an equilibrium model. It is argued that although the two models are very different, the distinction between them has been obscured by the use of the same terminology for the parameters of both. ...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00347602
更新日期:1981-07-01 00:00:00
abstract::Eriophorum vaginatum is a characteristic species of northern peatlands and a keystone plant for cutover bog restoration. Understanding the factors affecting E. vaginatum seedling establishment (i.e. growth dynamics and allocation) under global change has practical implications for the management of abandoned mined bog...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-012-2415-8
更新日期:2013-02-01 00:00:00
abstract::We used field and mesocosm experiments to measure effects of southern redbelly dace (Phoxinus erythrogaster), a grazing minnow, on stream ecosystem structure and function. Ecosystem structure was quantified as algal filament length, algal biomass, size distribution of particulate organic matter (POM), algal assemblage...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/s00442-006-0569-y
更新日期:2007-02-01 00:00:00
abstract::CO2 exchange characteristics and the activity of the carboxylating enzymes phosphoenolpyruvate carboxylase (PEP-C, E.C. 4.1.1.31) and ribulose 1,5-bisphosphate carboxylase (RuBP-C, E.C. 4.1.1.39) during one year in the greenhouse and at two levels of light and temperature in growth chambers were determined in the C3-C...
journal_title:Oecologia
pub_type: 杂志文章
doi:10.1007/BF00388473
更新日期:1989-05-01 00:00:00