Abstract:
:Consumers can alter decomposition rates through both feces and selective feeding in many ecosystems, but these combined effects have seldom been examined in tropical ecosystems. Members of the detrital food web (litter-feeders or microbivores) should presumably have greater effects on decomposition than herbivores, members of the green food web. Using litterbag experiments within a field enclosure experiment, we determined the relative effects of common litter snails (Megalomastoma croceum) and herbivorous walking sticks (Lamponius portoricensis) on litter composition, decomposition rates, and microbes in a Puerto Rican rainforest, and whether consumer effects were altered by canopy cover presence. Although canopy presence did not alter consumers' effects, focal organisms had unexpected influences on decomposition. Decomposition was not altered by litter snails, but herbivorous walking sticks reduced leaf decomposition by about 50% through reductions in high quality litter abundance and, consequently, lower bacterial richness and abundance. This relatively unexplored but potentially important link between tropical herbivores, detritus, and litter microbes in this forest demonstrates the need to consider autotrophic influences when examining rainforest ecosystem processes.
journal_name
Ecologyjournal_title
Ecologyauthors
Prather CM,Belovsky GE,Cantrell SA,González Gdoi
10.1002/ecy.2169subject
Has Abstractpub_date
2018-04-01 00:00:00pages
782-791issue
4eissn
0012-9658issn
1939-9170journal_volume
99pub_type
杂志文章相关文献
ECOLOGY文献大全abstract::Determining the relative contributions of intrinsic and extrinsic processes to the regulation of biological populations has been a recurrent ecological issue. Recent discussions concerning ecosystem "regime shifts" again raise the question of whether population fluctuations are mainly controlled by external forcing. R...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/0012-9658(2006)87[1932:brteft]2.0.co;2
更新日期:2006-08-01 00:00:00
abstract::Recent advances in metabolic scaling theory have highlighted the importance of exchange surfaces and vascular network geometry in understanding the integration and scaling of whole-plant form and function. Additional work on leaf form and function has also highlighted general scaling relationships for many leaf traits...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/06-1158
更新日期:2007-05-01 00:00:00
abstract::Theory of invasion ecology indicates that the number of invading individuals (propagule size) and the timing of invasion are important for invasion success. Propagule size affects establishment success due to an Allee effect and the effect of demographic stochasticity, whereas the timing of invasion does so via niche ...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/13-1527.1
更新日期:2014-08-01 00:00:00
abstract::Long-distance dispersal (LDD) may contribute disproportionately to range expansions, the creation of new evolutionary lineages, and species persistence in human-dominated landscapes. However, because data on the individual consequences of dispersal distance are extremely limited, we have little insight on how LDD is m...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/09-1458.1
更新日期:2010-10-01 00:00:00
abstract::The greater abundance of some exotic plants in their nonnative ranges might be explained in part by biogeographic differences in the strength of competition, but these competitive effects have not been experimentally examined in the field. We compared the effects of neighbors on the growth and reproduction of spotted ...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/11-0518.1
更新日期:2011-12-01 00:00:00
abstract::Theory has recognized a combination of niche and neutral processes each contributing, with varying importance, to species coexistence. However, long-term persistence of rare species has been difficult to produce in trait-based models of coexistence that incorporate stochastic dynamics, raising questions about how rare...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/11-1087.1
更新日期:2012-03-01 00:00:00
abstract::Biological invasions can change ecosystem function, have tremendous economic costs, and impact human health; understanding the forces that cause and maintain biological invasions is thus of immediate importance. A mechanism by which exotic plants might displace native plants is by increasing the pressure of native con...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/07-0223.1
更新日期:2008-04-01 00:00:00
abstract::Sea turtle nesting presents a potential pathway to subsidize nutrient-poor dune ecosystems, which provide the nesting habitat for sea turtles. To assess whether this positive feedback between dune plants and turtle nests exists, we measured N concentration and delta15N values in dune soils, leaves from a common dune p...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/06-0629
更新日期:2007-04-01 00:00:00
abstract::Disease dynamics during pathogen invasion and establishment determine the impacts of disease on host populations and determine the mechanisms of host persistence. Temporal progression of prevalence and infection intensity illustrate whether tolerance, resistance, reduced transmission, or demographic compensation allow...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.1706
更新日期:2017-03-01 00:00:00
abstract::Previous work suggests that animal water balance can influence trophic interactions, with predators increasing their consumption of water-laden prey to meet water demands. But it is unclear how the need for water interacts with the need for energy to drive trophic interactions under shifting conditions. Using manipula...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.2635
更新日期:2019-04-01 00:00:00
abstract::Epidemiological theory suggests that pathogens will not cause host extinctions because agents of disease should fade out when the host population is driven below a threshold density. Nevertheless, infectious diseases have threatened species with extinction on local scales by maintaining high incidence and the ability ...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/11-2257.1
更新日期:2013-01-01 00:00:00
abstract::Recent advances in ecological niche modeling (ENM) algorithms, in conjunction with increasing availability of geographic information system (GIS) data, allow species' niches to be predicted over broad geographic areas using environmental characteristics associated with point localities for a given species. Consequentl...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/0012-9658(2006)87[29:paoteo]2.0.co;2
更新日期:2006-07-01 00:00:00
abstract::Ants are a widespread group of ecologically important insects. Therefore, ants that are important predators of other ants are likely to play key roles by changing the abundance and impacts of their prey. Familiar arthropod predators, like army ants, are known for their overwhelming raids on invertebrate prey but are l...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.3084
更新日期:2020-08-01 00:00:00
abstract::River ecosystems are increasingly viewed as dynamic riverscapes; their extent, composition, and configuration vary in response to the pulsing of discharge. Although compositional and configurational shifts in riverscapes are thought to control ecosystem processes and biodiversity, attempts to quantify riverscape dynam...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/04-0889
更新日期:2006-03-01 00:00:00
abstract::Plants commonly employ indirect resistance to reduce herbivory by provisioning predatory arthropod populations with additional resources. Numerous predatory arthropods consume pollen that is entrapped on dense, wooly trichomes of plants. Over two seasons, we supplemented pollen on the wooly leaves of turkey mullein, C...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.2867
更新日期:2019-11-01 00:00:00
abstract::The neutral theory of biodiversity has been criticized for its neglect of species differences. Yet it is much less heeded that S. P. Hubbell's definition of neutrality allows species to differ in their birth and death rates as long as they have an equal per capita fitness. Using the lottery model of competition we fin...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/07-2079.1
更新日期:2009-01-01 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::In many organisms, specific predator species induce defensive phenotypes that are qualitatively different from the phenotypes induced by other predator species. This differential induction implies that there is no optimal phenotype that works best against all predators. However, few studies have actually tested the hy...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/05-0381
更新日期:2006-02-01 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::Empirical tests of the resource dispersion hypothesis (RDH), a theory to explain group living based on resource heterogeneity, have been complicated by the fact that resource patch dispersion and richness have proved difficult to define and measure in natural systems. Here, we studied the ecology of African lions Pant...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/12-0018.1
更新日期:2012-11-01 00:00:00
abstract::Belowground herbivory is commonly overlooked as a mechanism of top-down control in vegetated habitats, particularly in aquatic ecosystems. Recent research has revealed that increased densities of the herbivorous crab Sesarma reticulatum have led to runaway herbivory and widespread salt marsh die-off on Cape Cod, Massa...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/12-0010.1
更新日期:2012-09-01 00:00:00
abstract::Ecosystems can undergo abrupt transitions between alternative stable states when the driver crosses a critical threshold. Dynamical systems theory shows that when ecosystems approach the point of loss of stability associated with these transitions, they take a long time to recover from perturbations, a phenomenon know...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.2722
更新日期:2019-07-01 00:00:00
abstract::Latitudinal patterns of nonnative species richness suggest fewer successful invasions in the tropics, relative to temperate regions. One main hypothesis for this pattern is that biotic resistance to invasion is stronger in the tropics than at higher latitudes. Biotic resistance can limit the distribution and abundance...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/12-1382.1
更新日期:2013-06-01 00:00:00
abstract::Ecological communities are dynamic entities subjected to extinction/colonization events. Because species are connected through complex interaction networks, the arrival of a new species is likely to affect various species across the community, as observed in plant biological invasions. However, plant invasions usually...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.3046
更新日期:2020-07-01 00:00:00
abstract::Effects of predation may cascade down the food web. By alleviating interspecific competition among prey, predators may promote biodiversity, but the precise mechanisms of how predators alter competition have remained elusive. Here we report on a predator-exclosure experiment carried out in a tropical intertidal ecosys...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/11-1282.1
更新日期:2012-05-01 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::The contribution of interspecific competition to structuring population and community dynamics remains controversial and poorly tested. Interspecific competition has long been thought to influence the structure of migrant-resident bird communities in winter, yet experimental evidence remains elusive. The arrival of bi...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.3208
更新日期:2020-09-27 00:00:00
abstract::We provide algebraic simplifications for the redundancy analysis (RDA) eigenvalue and the canonical correspondence analysis (CCA) eigenvalue in the special case of permanent plots sampled twice. The indices for RDA and CCA are interrelated and are intuitively interpretable. These simplifications also apply to simple s...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/07-0842.1
更新日期:2008-06-01 00:00:00
abstract::The literature suggests that small genomes promote invasion in plants, but little is known about the interaction of genome size with other traits or about the role of genome size during different phases of the invasion process. By intercontinental comparison of native and invasive populations of the common reed Phragm...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.2068
更新日期:2018-01-01 00:00:00
abstract::The need to model and test hypotheses about complex ecological systems has led to a steady increase in use of path analytical techniques, which allow the modeling of multiple multivariate dependencies reflecting hypothesized causation and mechanisms. The aim is to achieve the estimation of direct, indirect, and total ...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/11-1899.1
更新日期:2012-08-01 00:00:00