Abstract:
:Genetic diversity, like species diversity, can have important consequences for communities and ecosystems. However, little is known about whether the effects of genetic diversity demonstrated in experimental assemblages are of sufficient strength to generate patterns in natural systems. We conducted a survey of eelgrass (Zostera marina) to examine the correlation between eelgrass clonal diversity and two metrics of community structure across two seasons: shoot density (reflective of habitat quality) and biomass of epiphytic algae (as a measure of food resource availability). Eelgrass clonal diversity was not related to epiphyte biomass in either winter or summer. Interestingly, there was a positive relationship between eelgrass clonal diversity and shoot density only in the winter, when eelgrass experiences stress from abiotic and biotic factors. The magnitude of this correlation was similar to that of other factors known to affect shoot density such as tidal elevation or position in the bed. In contrast, summer shoot density and diversity were uncorrelated. This natural pattern is consistent with previous experimental results in which diversity positively affected shoot density only during periods of abiotic or biotic stress, suggesting that the effects of clonal diversity are sufficiently strong to influence shoot density in the field, despite the presence of potentially confounding environmental gradients.
journal_name
Ecologyjournal_title
Ecologyauthors
Hughes AR,Stachowicz JJdoi
10.1890/07-2030.1subject
Has Abstractpub_date
2009-05-01 00:00:00pages
1412-9issue
5eissn
0012-9658issn
1939-9170journal_volume
90pub_type
杂志文章相关文献
ECOLOGY文献大全abstract::The field of movement ecology has rapidly grown during the last decade, with important advancements in tracking devices and analytical tools that have provided unprecedented insights into where, when, and why species move across a landscape. Although there has been an increasing emphasis on making animal movement data...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.2379
更新日期:2018-07-01 00:00:00
abstract::Paleorecords provide information on past environmental variability, and help define ecological reference conditions by means of changes in their characteristics (accumulation rate, geochemical composition, density, etc.). A measure of temporal dissimilarity, which has traditionally been used in dendrochronology and is...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/07-0783.1
更新日期:2008-04-01 00:00:00
abstract::Food webs of freshwater ecosystems can be subsidized by allochthonous resources. However, it is still unknown which environmental factors regulate the relative consumption of allochthonous resources in relation to autochthonous resources. Here, we evaluated the importance of allochthonous resources (litterfall) for th...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.1432
更新日期:2016-08-01 00:00:00
abstract::Predators can increase the biomass of their prey, particularly when prey life stages differ in competitive ability and predation is stage specific. Akin to predators, parasites influence host population sizes and engage in stage-structured interactions, yet whether parasites can increase host population biomass remain...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.3000
更新日期:2020-04-01 00:00:00
abstract::Although regional and global models of nitrogen (N) cycling typically focus on nitrate, dissolved organic nitrogen (DON) is the dominant form of nitrogen export from many watersheds and thus the dominant form of dissolved N in many streams. Our understanding of the processes controlling DON export from temperate fores...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/10-0899.1
更新日期:2011-03-01 00:00:00
abstract::There is now ample evidence that biodiversity stabilizes aggregated ecosystem functions, such as primary production, in changing environments. In primary producer systems, this stabilizing effect is found to be driven by higher functional resistance (i.e., reduced changes in functions by environmental changes) rather ...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.1601
更新日期:2016-12-01 00:00:00
abstract::Avian dispersal of seeds of the wild olive tree (Olea europaea var. sylvestris) was studied in Mediterranean shrubland, southern Spain. Fourteen species of small frugivorous birds in the genera Sylvia, Turdus, Sturnus, and Erithacus accounted for 97.4% of the fruits consumed by birds. The significance of each bird spe...
journal_title:Ecology
pub_type: 杂志文章
doi:10.2307/1939863
更新日期:1987-12-01 00:00:00
abstract::Kelps often live in a harsh hydrodynamic environment where wave-driven dislodgement of individuals can alter the biodiversity and functioning of reef systems, and increase production in coastal ecosystems adjacent to reefs. The current paradigm is that winter storms tear kelps from reefs once hydrodynamic forces excee...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/13-2365.1
更新日期:2015-03-01 00:00:00
abstract::Despite the recent advances in seed science research, information on seed dormancy and germination traits is still missing for many lineages of the seed plants. We translated and digitized a huge data set on seed dormancy and germination from the Reference Book On Dormant Seed Germination by M. Nikolaeva, M. Razumova,...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.3049
更新日期:2020-07-01 00:00:00
abstract::The importance of density dependence in natural communities continues to spark much debate because it is fundamental to population regulation. We used temporal manipulations of density to explore potentially stabilizing density dependence in early survivorship among six local populations of a tropical damselfish (Dasc...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/06-0970
更新日期:2007-05-01 00:00:00
abstract::Many young birds on the Arctic tundra are confronted by a challenging task: they must molt their feathers and accumulate fat stores for the autumn migration before climatic conditions deteriorate. Our understanding of the costs and constraints associated with these stages is extremely limited. We investigated post-juv...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/07-0696.1
更新日期:2007-11-01 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::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::Mutualisms are well known to influence individual fitness and the population dynamics of partner species, but little is known about whether they influence species distributions and the location of geographic range limits. Here, we examine the contribution of plant-pollinator interactions to the geographic range limit ...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/11-1462.1
更新日期:2012-05-01 00:00:00
abstract::Removal of predators can have strong indirect effects on primary producers through trophic cascades. Crustose coralline algae (CCA) are major primary producers worldwide that may be influenced by predator removal through changes in grazer composition and biomass. CCA have been most widely studied in Caribbean and temp...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/09-2059.1
更新日期:2010-12-01 00:00:00
abstract::Understanding species differences in demographic strategies is a fundamental goal of ecology. In scleractinian corals, colony morphology is tightly linked with many demographic traits, such as size-specific growth and morality. Here we test how well morphology predicts the colony size-fecundity relationship in eight s...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.1588
更新日期:2016-12-01 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
abstract::An individual's competitive ability is often dependent on its size, but the methods commonly used to analyze plant competition experiments generally assume that the outcome of interactions are size independent. A method for the analysis of experiments with paired competition treatments based on nonlinear regression wi...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/0012-9658(2006)87[1452:anratt]2.0.co;2
更新日期:2006-06-01 00:00:00
abstract::Sex ratios are commonly skewed and variable in wild populations, but few studies track temporal trends in this demographic parameter. We examined variation in the operational sex ratio at two protected and declining breeding colonies of Magellanic Penguins (Spheniscus magellanicus) in Chubut, Argentina. Penguins from ...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.2939
更新日期:2020-03-01 00:00:00
abstract::Character displacement may facilitate species coexistence through niche partitioning. However, the degree to which character displacement influences broader patterns of community assembly is unclear. Here, we capitalize on a natural experiment of community assembly on the oceanic island of Bermuda. Over the past centu...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.2727
更新日期:2019-08-01 00:00:00
abstract::Litter burning and biological decomposition are oxidative processes co-occurring in many terrestrial ecosystems, producing organic matter with different chemical properties and differently affecting plant growth and soil microbial activity. We tested the chemical convergence hypothesis, i.e., materials with different ...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1002/ecy.2053
更新日期:2018-01-01 00:00:00
abstract::After much debate, there is an emerging consensus that the composition of many ecological communities is determined both by species traits, as proposed by niche theory, as well as by chance events. A critical question for ecology is, therefore, which attributes of species predict the dominance of deterministic or stoc...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/11-1144.1
更新日期:2012-07-01 00:00:00
abstract::Patches, gradients, and hierarchies are three common organizational frameworks for assessing the effects of spatial heterogeneity on species distributions. Since these frameworks are often chosen a priori, without knowledge of study systems, they may not correspond to the empirical heterogeneity present and may result...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/06-0555
更新日期:2007-06-01 00:00:00
abstract::Epidemiological models concerned with the control of malaria using interventions such as bed nets and vaccines increasingly incorporate realistic aspects of malaria biology. The increasing complexity of these models limits their ability to abstract ecological processes and to address questions on the regulation of pop...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/08-1022.1
更新日期:2009-09-01 00:00:00
abstract::Models of two-patch predator-prey metacommunities are used to explore how the global predator population changes in response to additional mortality in one of the patches. This could describe the dynamics of a predator in an environment that includes a refuge area where that predator is protected and a spatially disti...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/11-0011.1
更新日期:2012-02-01 00:00:00
abstract::Rare species play limited ecological roles, but particular behavioral traits may predispose species to become functionally extinct before becoming rare. Flying foxes (Pteropodid fruit bats) are important dispersers of large seeds, but their effectiveness is hypothesized to depend on high population density that induce...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/05-0386
更新日期:2006-02-01 00:00:00
abstract::Understanding the interplay between environmental factors contributing to treeline formation and how these factors influence different life stages remains a major research challenge. We used an afforestation experiment including 92 000 trees to investigate the spatial and temporal dynamics of tree mortality and growth...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/11-0384.1
更新日期:2012-02-01 00:00:00
abstract::Seed predation is an important biotic filter that can influence abundance and spatial distributions of native species through differential effects on recruitment. This filter may also influence the relative abundance of nonnative plants within habitats and the communities' susceptibility to invasion via differences in...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/13-1774.1
更新日期:2014-07-01 00:00:00
abstract::Ecological research is increasingly concentrated at particular locations or sites. This trend reflects a variety of advantages of intensive, site-based research, but also raises important questions about the nature of such spatially delimited research: how well does site based research represent broader areas, and doe...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/14-1043.1
更新日期:2015-04-01 00:00:00
abstract::Abiotic soil properties, plant community composition, and herbivory all have been reported as important factors influencing the composition of soil communities. However, most studies thus far have considered these factors in isolation, whereas they strongly interact in the field. Here, we study how grazing by vertebra...
journal_title:Ecology
pub_type: 杂志文章
doi:10.1890/09-0134.1
更新日期:2010-03-01 00:00:00