Abstract：
:The scaling of metabolic rates to body size is widely considered to be of great biological and ecological importance, and much attention has been devoted to determining its theoretical and empirical value. Most debate centers on whether the underlying power law describing metabolic rates is 2/3 (as predicted by scaling of surface area/volume relationships) or 3/4 ("Kleiber's law"). Although recent evidence suggests that empirically derived exponents vary among clades with radically different metabolic strategies, such as ectotherms and endotherms, models, such as the metabolic theory of ecology, depend on the assumption that there is at least a predominant, if not universal, metabolic scaling exponent. Most analyses claimed to support the predictions of general models, however, failed to control for phylogeny. We used phylogenetic generalized least-squares models to estimate allometric slopes for both basal metabolic rate (BMR) and field metabolic rate (FMR) in mammals. Metabolic rate scaling conformed to no single theoretical prediction, but varied significantly among phylogenetic lineages. In some lineages we found a 3/4 exponent, in others a 2/3 exponent, and in yet others exponents differed significantly from both theoretical values. Analysis of the phylogenetic signal in the data indicated that the assumptions of neither species-level analysis nor independent contrasts were met. Analyses that assumed no phylogenetic signal in the data (species-level analysis) or a strong phylogenetic signal (independent contrasts), therefore, returned estimates of allometric slopes that were erroneous in 30% and 50% of cases, respectively. Hence, quantitative estimation of the phylogenetic signal is essential for determining scaling exponents. The lack of evidence for a predominant scaling exponent in these analyses suggests that general models of metabolic scaling, and macro-ecological theories that depend on them, have little explanatory power.
journal_name
Ecologyjournal_title
Ecologyauthors
Capellini I,Venditti C,Barton RAdoi
10.1890/09-0817.1subject
Has Abstractpub_date
2010-09-01 00:00:00pages
2783-93issue
9eissn
0012-9658issn
1939-9170journal_volume
91pub_type
杂志文章相关文献
ECOLOGY文献大全abstract：:Multiple factors complicate the analysis of animal telemetry location data. Recent advancements address issues such as temporal autocorrelation and telemetry measurement error, but additional challenges remain. Difficulties introduced by complicated error structures or barriers to animal movement can weaken inference....
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/15-0472.1
更新日期：2015-10-01 00:00:00
abstract：:The pervasive impact of invasive species has motivated considerable research to understand how characteristics of invaded communities, such as native species diversity, affect the establishment of invasive species. Efforts to identify general mechanisms that limit invasion success, however, have been frustrated by dis...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/09-1301.1
更新日期：2010-05-01 00:00:00
abstract：:Coupled trophic-engineer interactions are potentially important for maintaining habitat function and ecosystem services. As ephemeral submerged aquatic vegetation (SAV), Ruppia maritima has a short well-defined growth-senescence cycle and should benefit from any ecological interaction that enhances its physical condit...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/06-0375
更新日期：2007-03-01 00:00:00
abstract：:Comparing the structure of presence/absence (i.e., binary) matrices with those of randomized counterparts is a common practice in ecology. However, differences in the randomization procedures (null models) can affect the results of the comparisons, leading matrix structural patterns to appear either "random" or not. S...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.2043
更新日期：2018-01-01 00:00:00
abstract：:Bioclimatic envelope models use associations between aspects of climate and species' occurrences to estimate the conditions that are suitable to maintain viable populations. Once bioclimatic envelopes are characterized, they can be applied to a variety of questions in ecology, evolution, and conservation. However, som...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/11-1930.1
更新日期：2012-07-01 00:00:00
abstract：:It is widely recognized that protected areas can strongly influence ecological systems and that hybridization is an important conservation issue. However, previous studies have not explicitly considered the influence of protected areas on hybridization dynamics. Eastern wolves are a species of special concern and thei...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/13-0698.1
更新日期：2014-02-01 00:00:00
abstract：:Although water availability is primarily seen as a factor affecting food availability (a bottom-up process), we examined its effect on predator-prey interactions through an influence on prey behavior (a top-down process). We documented a link between water availability, predation risk, and reproductive success in a go...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/08-0215.1
更新日期：2009-02-01 00:00:00
abstract：:Theory predicts that reproduction will change as individuals near the end of their lives by either increasing reproductive allocation (terminal allocation hypothesis) or decreasing allocation (senescence hypothesis) toward the end of life. Although senescence has received more support, few studies examine how both age...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.1851
更新日期：2017-09-01 00:00:00
abstract：:Sex-biased survival linked to anthropogenic threats places populations at risk. We show the utility of long-term multidecadal photo-identification (photo-id) combined with long-term high-resolution (Fastloc-GPS) satellite telemetry to investigate the links between mortality rates and patterns of movement for a wide-ra...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.3027
更新日期：2020-07-01 00:00:00
abstract：:Plant tolerance of herbivory, i.e., the ability to recover after damage, is an important component of how plants cope with herbivores. Tolerance has long been hypothesized to be constrained evolutionarily by plant resistance to herbivores, traits that allow plants to cope with stressful growing conditions, and traits ...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.1995
更新日期：2017-11-01 00:00:00
abstract：:For animals living in natural or semi-natural settings, empirical data on how sociality changes in response to increasing population density are few, especially with respect to true conspecific density and not group size. However, insight into this line of research may be far-reaching--from understanding density depen...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/11-0020.1
更新日期：2012-01-01 00:00:00
abstract：:Recent biodiversity-ecosystem functioning experiments in temperate grasslands have shown that productivity positively correlates with plant species richness. Resource partitioning (in particular, nitrogen [N] partitioning) has been proposed as one possible mechanism to explain this pattern. There is evidence for inter...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/11-1439.1
更新日期：2012-11-01 00:00:00
abstract：:Terrestrial ecosystems in the Northern Hemisphere are a globally important sink for anthropogenic CO2 in the Earth's atmosphere, slowing its accumulation as well as the pace of climate warming. With the use of a long-term field experiment (ca. 20 yr), we show that the expression of fungal class II peroxidase genes, wh...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.2804
更新日期：2019-10-01 00:00:00
abstract：:A mechanistic understanding of the carbon (C) cycle-climate change feedback is essential for projecting future states of climate and ecosystems. Here we report a novel field mechanism and evidence supporting the hypothesis that nocturnal warming in a temperate steppe ecosystem in northern China can result in a minor C...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/08-2026.1
更新日期：2009-10-01 00:00:00
abstract：:The role of tree diversity in restored forests and its impact on key ecological processes like growth and resistance to herbivory has become increasingly important. We analyzed height growth and white-tailed deer Odocoileus virginianus browsing damage to saplings of 16 broadleaved tree species in a large-scale (13 ha)...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.3063
更新日期：2020-08-01 00:00:00
abstract：:Dreissenid mussels, including the zebra (Dreissena polymorpha) and quagga (Dreissena rostiformus bugensis) mussel, are invasive species known for their capacity to act as ecosystem engineers. They have caused significant changes in the many freshwater systems they have invaded by increasing water clarity, reducing pri...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.1836
更新日期：2017-06-01 00:00:00
abstract：:All communities vary through time. This variability originates from both intrinsic and extrinsic sources. Intrinsic sources are due to actions of organisms in a community, i.e., population dynamics and species interactions, while extrinsic variability is variability created by elements of habitat or environmental chan...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/09-0350.1
更新日期：2010-06-01 00:00:00
abstract：:Although negative relationships between diversity (frequently measured as species richness) and invasibility at neighborhood or community scales have often been reported, realistic natural diversity gradients have rarely been studied at this scale. We recreated a naturally occurring gradient in species richness to tes...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/12-0732.1
更新日期：2013-03-01 00:00:00
abstract：:Climate variability, which is expected to increase in the future, can promote coexistence through a mechanism called the storage effect. Currently, we have little understanding of how the importance of the storage effect varies among ecosystems. We tested for the three conditions of the storage effect in a sagebrush s...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/08-2241.1
更新日期：2009-12-01 00:00:00
abstract：:Recent studies indicate that highly aged material is a major component of organic matter transported by most rivers. However, few studies have used natural 14C to trace the potential entry of this aged material into modern river food webs. Here we use natural abundance 14C, 13C, and deuterium (2H) to trace the contrib...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/09-0330.1
更新日期：2010-08-01 00:00:00
abstract：:The relationship between species richness and environmental variables may change depending on habitat structure, dispersal ability, species mixing, and community adaptation to the environment. It is crucial to know how these factors regulate the environment-diversity relationship. The land molluscan fauna of the Ogasa...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/06-1735.1
更新日期：2007-07-01 00:00:00
abstract：:Ecological surprises, substantial and unanticipated changes in the abundance of one or more species that result from previously unsuspected processes, are a common outcome of both experiments and observations in community and population ecology. Here, we give examples of such surprises along with the results of a surv...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/07-0965.1
更新日期：2008-04-01 00:00:00
abstract：:Interference competition may lead to a tragedy of the commons in which individuals driven by self-interest reduce the fitness of the entire group. We investigated this hypothesis in Allenby's gerbils, Gerbillus andersoni allenbyi, by comparing foraging behaviors of single vs. pairs of gerbils. We recorded strong inter...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/14-0130.1
更新日期：2015-01-01 00:00:00
abstract：:The data set provided here includes 8,320 frugivory interactions (records of pairwise interactions between plant and frugivore species) reported for the Atlantic Forest. The data set includes interactions between 331 vertebrate species (232 birds, 90 mammals, 5 fishes, 1 amphibian, and 3 reptiles) and 788 plant specie...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.1818
更新日期：2017-06-01 00:00:00
abstract：:Local species diversity is maintained over ecological time by a balance between dispersal and species interactions. Local-regional species richness relationships are often used to investigate the relative importance of these two processes and the scales at which they operate. For communities undergoing succession, the...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/11-1797.1
更新日期：2012-04-01 00:00:00
abstract：:Essential fatty acids (EFAs) are primarily generated by phytoplankton in aquatic ecosystems, and can limit the growth, development, and reproduction of higher consumers. Among the most critical of the EFAs are highly unsaturated fatty acids (HUFAs), which are only produced by certain groups of phytoplankton. Changing ...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/15-0794.1
更新日期：2016-05-01 00:00:00
abstract：:We addressed the potential for climate change to facilitate invasions and precipitate shifts in community composition by testing effects of ocean warming on species in a marine fouling community in Bodega Harbor, Bodega Bay, California, USA. First, we determined that introduced species tolerated significantly higher t...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1890/10-0238.1
更新日期：2010-08-01 00:00:00
abstract：:Surf zones, classified from reflective to dissipative, separate the ocean from shore and subsidies from the coastal ocean must pass through surf zones to reach the shore. We have observed that variations in phytoplankton concentrations in the water over the intertidal zone varied with surf-zone hydrodynamics and we hy...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.2415
更新日期：2018-08-01 00:00:00
abstract：:Providing a complete data set with species and trait information for a given area is essential for assessing plant conservation, management, and ecological restoration, for both local and global applications. Also, these data sets provide additional information for surveys or data collections, establishing the startin...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.3091
更新日期：2020-09-01 00:00:00
abstract：:Foundation species structure forest communities and ecosystems but are difficult to identify without long-term observations or experiments. We used statistical criteria--outliers from size-frequency distributions and scale-dependent negative effects on alpha diversity and positive effects on beta diversity--to identif...
journal_title：Ecology
pub_type： 杂志文章
doi：10.1002/ecy.3234
更新日期：2020-10-26 00:00:00
