Abstract：
:Leaves from several desert and woodland species, including gymnosperms and angiosperms with both C3 and C4 physiology, were analyzed to detect trends in δ13Cleaf with elevation and slope aspect along two transects in southeastern Utah and south-central New Mexico, USA. The main difference between the two transects is the steeper elevational gradient for mean annual and summer precipitation in the southern transect. For any given species, we found that isotopic differences between individual plants growing at the same site commonly equal differences measured for plants along the entire altitudinal gradient. In C3 plants, δ13Cleaf values become slightly enriched at the lowest elevations, the opposite of trends identified in more humid regions. Apparently, increasing water-use efficiency with drought stress offsets the influence of other biotic and abiotic factors that operate to decrease isotopic discrimination with elevation. For some species shared by the two transects (e.g., Pinus edulis and Cercocarpus montanus), δ13Cleaf values are dramatically depleted at sites that receive more than 550 mm mean annual precipitation, roughly the boundary (pedalfer-pedocal) at which soils commonly fill to field capacity in summer and carbonates are leached. We hypothesize that, in summer-wet areas, this may represent the boundary at which drought stress overtakes other factors in determining the sign of δ13Cleaf with elevation. The opposition of isotopic trends with elevation in arid versus humid regions cautions against standard correction for elevation in comparative studies of δ13Cleaf.
journal_name
Oecologiajournal_title
Oecologiaauthors
Van de Water PK,Leavitt SW,Betancourt JLdoi
10.1007/s00442-002-0973-xsubject
Has Abstractpub_date
2002-08-01 00:00:00pages
332-343issue
3eissn
0029-8549issn
1432-1939pii
10.1007/s00442-002-0973-xjournal_volume
132pub_type
杂志文章相关文献
OECOLOGIA文献大全abstract：:Nitrogen deposition in the northeastern US changed N availability in the latter part of the twentieth century, with potential legacy effects. However, long-term N cycle measurements are scarce. N isotopes in tree rings have been used as an indicator of N availability through time, but there is little verification of w...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-019-04528-4
更新日期：2019-12-01 00:00:00
abstract：:The diurnal course of the xylem water flow in a solitary Salix fragilis L. tree in a wet grassland was measured using the tissue heat-balance method. There was considerable variation due to meteorological factors. Maximum flow rate was 0.4 kg h-1 m-2 of crown projection area, or 5.9 kg h-1 kg-1 leaf dry weight. The da...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00376862
更新日期：1984-10-01 00:00:00
abstract：:The ostracod Cyprideis torosa Jones, 1850 is a dominant species in the meiofauna of brackish water habitats. Its production in the field over a five-year period has been calculated using two production models. The first model uses the age-distribution of shells preserved in the sediment to assess the stage-specific mo...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00385231
更新日期：1983-06-01 00:00:00
abstract：:In this study we investigated the relationship between food availability, feeding ecology and territoriality in a population of Cactus Finches, Geospiza scandens, on Isla Daphne Major, Galápagos, between 1979 and 1981.We monitored the phenologies of the principal food types on the island and related them to changes in...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00384545
更新日期：1983-04-01 00:00:00
abstract：:We examined the demographic costs of Chaoborus-induced defensive spine structures in Daphnia pulex. Our aim was to assess the role of resource limitation and the interaction effects of limiting food level and antipredator structures on fitness of D. pulex and to pinpoint those life stages that are most sensitive to ch...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00323778
更新日期：1991-06-01 00:00:00
abstract：:Across latitudinal clines, the juvenile developmental rates of ectotherms often covary with the length of the growing season, due to life-history trade-offs imposed by the time-constrained environments. However, as the start of the growing season often varies substantially across years, adaptive parental effects on ju...
journal_title：Oecologia
pub_type： 杂志文章,meta分析
doi：10.1007/s00442-020-04642-8
更新日期：2020-04-01 00:00:00
abstract：:Optimal diet theory often fails to predict a forager's diet choice when prey are mobile. Because they escape or defend themselves, mobile prey are likely to increase the forager's handling time, thereby decreasing its fitness gain rate. Many animals have been shown to select their prey so as to maximize either their f...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-008-1175-y
更新日期：2009-01-01 00:00:00
abstract：:This study reports a rare example where a native herbivorous insect frequently overexploits local populations of its perennial host. Local dynamics of a flightless weevil (Hadramphus spinipennis, Curculionidae) and its host plant (Aciphylla dieffenbachii, Apiaceae) were assessed for one discrete patch. In this main st...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-002-0936-2
更新日期：2002-07-01 00:00:00
abstract：:Several studies have suggested that aquatic microcrustaceans are relatively efficient dispersers in a variety of landscapes, whereas others have indicated dispersal limitation at large spatial scales or under specific circumstances. Based on a survey of a set of recently created ponds in an area of approximately 18 × ...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-015-3501-5
更新日期：2016-03-01 00:00:00
abstract：:The relationships between prey utilization and jaw biomechanics were explored in two Caribbean populations (La Parguera and Mona Island) of four trigger-fishes. The volumetric contribution of major prey types and six biomechanical features of the jaws that characterize biting strength were contrasted between populatio...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00329796
更新日期：1995-06-01 00:00:00
abstract：:A series of seventeen plant extracts rich in phenolic materials, including condensed and hydrolysable tannins, have been subjected to a series of chemical analyses in an attempt to gather ecologically significant information about their structure. Procedures investigated were (i) the Folin-Denis and Hagerman and Butle...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00385058
更新日期：1987-04-01 00:00:00
abstract：:To maximize fitness, many animals must trade off their need to forage efficiently against their need to avoid predators. We studied such a trade-off in four species of tits (Paridae) in a forest near Oxford, UK. During winter, tits form flocks which increase feeding efficiency and reduce predation risk. These flocks f...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s004420100713
更新日期：2001-10-01 00:00:00
abstract：:Invertebrate algal grazer densities were manipulated in a temperate river to discover the impact of differences in riffle-scale architectural complexity on the strength of the trophic interaction between grazers and epilithic algae. Animal densities were manipulated by manual removal in architecturally complex boulder...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00328458
更新日期：1996-08-01 00:00:00
abstract：:Using field and laboratory observations and experiments over 3 years, I investigated whether reproductive trade-offs shape individual life histories in two natural populations of the water strider, Aquarius remigis, in which univoltine and bivoltine life cycles coexist. Both later eclosion dates and food shortages, ev...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00317325
更新日期：1994-04-01 00:00:00
abstract：:Restoration of degraded landscapes through replantings of native vegetation has been proceeding in response to habitat loss and fragmentation and plummeting biodiversity. Little is known about whether the investments in ecological restoration have resulted in biodiversity benefits. We evaluated the potential of restor...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-008-1221-9
更新日期：2009-03-01 00:00:00
abstract：:Plants experience unique challenges due to simultaneous life in two spheres, above- and belowground. Interactions with other organisms on one side of the soil surface may have impacts that extend across this boundary. Although our understanding of plant-herbivore interactions is derived largely from studies of leaf he...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-010-1779-x
更新日期：2011-02-01 00:00:00
abstract：:Common ragweed (Ambrosia artemisiifolia) is an abundant weed in its native North America, despite supporting a wide range of natural enemies. Here, we tested whether these enemies have significant impacts on the performance of this plant in its native range. We excluded enemies from the three principal life-history st...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-009-1557-9
更新日期：2010-04-01 00:00:00
abstract：:Predator-prey interactions between the predatory leech, Glossiphonia complanata, and its gastropod prey were investigated in laboratory experiments, including behavioural observations with the aid of time-lapse video technique. Six gastropod species were investigated, viz. Lymnaea peregra, Planorbis planorbis, Physa f...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00377633
更新日期：1986-05-01 00:00:00
abstract：:Early models of hostplant exploitation by phytophagous insects suffer from unwarranted assumptions and may not be generally applicable. Wordmodels of the co-evolutionary approach may assume unwarranted evolutionary stability in 'strategic' explanations, whilst mathematical models derived from earlier optimal-diet stud...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00541116
更新日期：1982-01-01 00:00:00
abstract：:Heterotrophic gains of carbon from various host species by the root hemiparasitic shrub Olax phyllanthi (Labill) R.Br. were assessed using techniques based on carbon isotope discrimination (δ13C) on C3 and C4 hosts and C:N ratios of xylem sap and dry matter of host and parasite. Heterotrophic benefits (H) to Olax base...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00328740
更新日期：1996-02-01 00:00:00
abstract：:Previous studies have shown that green sunfish, Lepomis cyanellus, have strong effects on the activity, habitat use, social interactions and mating dynamics of a stream-dwelling water strider, Aquarius remigis (family Gerridae, hence, gerrids). In nature, however, stream pools often contain not just sunfish and water ...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00328544
更新日期：1996-01-01 00:00:00
abstract：:We investigated the effects of elevated CO2 (600 μl l-1 vs 350 μl l-1) and phosphorus supply (1 g P m-2 year-1 vs unfertilized) on intact monoliths from species-rich calcareous grassland in a greenhouse. Aboveground community dry mass remained almost unaffected by elevated CO2 in the first year (+6%, n.s.), but was si...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s004420050562
更新日期：1998-08-01 00:00:00
abstract：:To examine the importance of Na+ and Cl- to osmotic adjustment in a salt-tolerant ecotype of the C4 nonhalophyte Andropogon glomeratus, plants were watered with sorbitol, a neutral osmoticum, and synthetic seawater, for five days. Gas exchange measurements were made during the course of the watering treatment and duri...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00378043
更新日期：1988-11-01 00:00:00
abstract：:Anthropogenic disturbance can have important indirect effects on ecosystems by disrupting species interactions. Here we examine the effects of anthropogenic disturbance on distance dispersal by ants for the diaspores of myrmecochorous Euphorbiaceae in Brazilian Caatinga. Rates of diaspore removal and distances removed...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-013-2740-6
更新日期：2014-01-01 00:00:00
abstract：:Invasive generalist ectoparasites provide a tool to study factors affecting expansion rates. An increase in the number of host species may facilitate geographic range expansion by increasing the number of suitable habitats and by affecting local extinction and colonization rates. A geographic perspective on parasite h...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-011-1951-y
更新日期：2011-08-01 00:00:00
abstract：:Plants of Dudleya blochmanae were studied over a growing season (December-June) in their native habitat on the central California coast. During the season soil water potential fluctuatdd widely, becoming unmeasurably negative (<-5.0 MPa) by early May. In contrast, leaf water potential did not fluctuate greatly with th...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00377545
更新日期：1984-09-01 00:00:00
abstract：:Severe droughts may alter the reproductive phenology of tropical tree species, but our understanding of these effects has been hampered by confounded variation in drought, light and other factors during natural drought events. We used a large-scale experimental reduction of throughfall in an eastern-central Amazon for...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s00442-006-0507-z
更新日期：2006-11-01 00:00:00
abstract：:The tenets of optimal foraging theory are used to contrast the behavior of the predatory snail Acantina spirata when feeding on the barnacles Balanus glandula and Chthamalus fissus under conditions of satiation and starvation. As predicted in optimal diet models, A. spirata is less selective (ratio of attack frequency...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00377564
更新日期：1987-06-01 00:00:00
abstract：:The decomposition (meaning disappearance) of different leaf types and artificial leaves made from cellulose hydrate foil was studied in three forests - an alluvial forest (Ulmetum), a beech forest on limestone soil (Melico-Fagetum), and a spruce forest in soil overlying limestone bedrock.Fine, medium, and coarse mesh ...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/BF00379565
更新日期：1983-03-01 00:00:00
abstract：:We examined the response of the birch tube-maker Acrobasis betulella Hulst (Lepidoptera: Pyralidae) to habitat patch isolation and edges. Density of A.␣betulella larva was higher on distant islands than on islands close to the shore. Following experimental removal of all larvae from the islands, adults were able to re...
journal_title：Oecologia
pub_type： 杂志文章
doi：10.1007/s004420050134
更新日期：1997-03-01 00:00:00
