Direct and indirect effects of plant and frugivore diversity on structural and functional components of fruit removal by birds.


:Seed dispersal is an important ecosystem function, but it is contentious how structural and functional diversity of plant and bird communities are associated with seed-dispersal functions. We used structural equation models to test how structural (i.e., abundance, species richness) and functional diversity (i.e., functional dispersion and community-weighted means of functional traits) of fruiting plants and frugivorous birds directly and indirectly influence the respective components of fruit removal. We recorded plant and bird diversity in point counts and observed plant-frugivore interactions in a tropical mountain forest in Ecuador. We also recorded plant and bird morphological traits to calculate measures of functional diversity. We found that fruit abundance had a positive direct effect on bird abundance, which directly and indirectly mediated the abundance of removed fruits. Plant and bird species richness were only directly related to the richness of the removed fruits. Functional dispersion of the plant community was positively associated to that of the bird community and to that of the removed fruits. Consistently, we found positive associations between community-weighted means of plant and bird traits and between community-weighted means of plant traits and that of plants with removed fruits. In contrast, community-weighted means of the bird community were unrelated to that of the removed fruits. Overall, our results suggest that plant abundance directly and indirectly influences fruit removal, likely because of avian fruit tracking. However, we did not find strong links between the functional diversity of the frugivore community and removed fruits, suggesting that other factors in addition to plant-animal trait matching might be important for the functional diversity of removed fruits. Our findings highlight the importance of frugivore abundance for maintaining seed dispersal by animals in tropical forests.






Quitián M,Santillán V,Espinosa CI,Homeier J,Böhning-Gaese K,Schleuning M,Neuschulz EL




Has Abstract


2019-02-01 00:00:00














  • Call differences and calling site segregation in anuran species from central Amazonian floating meadows.

    abstract::The acoustic behaviour of 15 sympatric and synchronically breeding species of frogs in an area of floating meadows near Manaus (Brazil) was studied for a period of 8 months. The calling positions of each species can be identified with certain physiognomic types of vegetation.Sound analyses were used to compare the mat...


    pub_type: 杂志文章


    authors: Hödl W

    更新日期:1977-12-01 00:00:00

  • Differences in carbon and nutrient fractions among arctic growth forms.

    abstract::In a survey of 28 plant species of 6 major growth forms from Alaskan tundra, we found no consistent difference among growth forms in the chemical nature of stored reserves except for lichens and mosses (which stored C primarily as polysaccharides) and shrubs (which tended to store C more as sugars than as polysacchari...


    pub_type: 杂志文章


    authors: Chapin FS 3rd,Shaver GR

    更新日期:1988-12-01 00:00:00

  • Eco-physiological studies on desert plants : I. Autecology of Egyptian Zygophyllum species.

    abstract::The Egyptian Zygophyllum species, though limited in number, contribute in considerable measure to the desert vegetation. They represent a group of succulent plants which are drought resistant or salt tolerant living under severe dry climatic conditions. Their abundance is attributed to these characteristics in additio...


    pub_type: 杂志文章


    authors: Batanouny KH,Ezzat NH

    更新日期:1971-06-01 00:00:00

  • Ground-feeding migratory songbirds as cellular slime mold distribution vectors.

    abstract::Cosmopolitan species of cellular slime molds occur continents apart in both tropical and temperate zones of the world though the spore masses are too heavy to be wind borne, and water dispersal is limited to the watercourses. A highly mobile distribution vector was found in ground-feeding migratory song birds. Nine ub...


    pub_type: 杂志文章


    authors: Suthers HB

    更新日期:1985-03-01 00:00:00

  • Biological decomposition efficiency in different woodland soils.

    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 ...


    pub_type: 杂志文章


    authors: Herlitzius H

    更新日期:1983-03-01 00:00:00

  • Climatic influences on net ecosystem CO2 exchange during the transition from wintertime carbon source to springtime carbon sink in a high-elevation, subalpine forest.

    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...


    pub_type: 杂志文章


    authors: Monson RK,Sparks JP,Rosenstiel TN,Scott-Denton LE,Huxman TE,Harley PC,Turnipseed AA,Burns SP,Backlund B,Hu J

    更新日期:2005-11-01 00:00:00

  • Quantifying disturbance resistance in an ecologically dominant species: a robust design analysis.

    abstract::Disturbance is now recognized as a key ecosystem process but few studies have examined its indirect effects on individuals in a population or its relationship to ecological dominance in a community. Using an ecologically dominant small mammal population in experimentally burned habitat as a model, I empirically tested...


    pub_type: 杂志文章


    authors: Plavsic MJ

    更新日期:2011-08-01 00:00:00

  • The effect of soil nutrient status on prey utilization in four carnivorous plants.

    abstract::The hypothesis that carnivorous plants are less responsive to prey at high soil nutrient levels than at lower levels (Givnish et al. 1984) is tested on four plant species (Drosera rotundifolia, Pinguicula alpina, P. villosa and P. vulgaris) from a subarctic environment. The response, measured in terms of seven charact...


    pub_type: 杂志文章


    authors: Karlsson PS,Nordell KO,Carlsson BÅ,Svensson BM

    更新日期:1991-03-01 00:00:00

  • Spatial dynamics of benthic competition on coral reefs.

    abstract::The community structure of sedentary organisms is largely controlled by the outcome of direct competition for space. Understanding factors defining competitive outcomes among neighbors is thus critical for predicting large-scale changes, such as transitions to alternate states within coral reefs. Using a spatially exp...


    pub_type: 杂志文章


    authors: Sandin SA,McNamara DE

    更新日期:2012-04-01 00:00:00

  • Size-dependent drift responses of mayflies to experimental hydrologic variation: active predator avoidance or passive hydrodynamic displacement?

    abstract::Larger nymphs within aquatic insect taxa have been frequently observed to be transported down-stream in the stream drift only at night. Others have hypothesized this pattern results primarily from large nymphs' behavioural avoidance of entering drift during daylight, when size-selective, visually-feeding fish predator...


    pub_type: 杂志文章


    authors: Poff NL,DeCino RD,Ward JV

    更新日期:1991-12-01 00:00:00

  • The periodicity of daily activity and its seasonal changes in free-ranging and captive kangaroo rats.

    abstract::Populations ofDipodomys microps andD. merriami in eastern California (37°11'N. Lat.) are active on the surface throughout the night and during the whole year. These two species, and the males and females within each species, show no significant differences in times of beginning or end of activity. Beginning and end of...


    pub_type: 杂志文章


    authors: Kenagy GJ

    更新日期:1976-06-01 00:00:00

  • Effects of indiscriminate foraging by tropical hummingbirds on pollination and plant reproductive success: experiments with two tropical treelets (Rubiaceae).

    abstract::In cloud forest at Monteverde, Costa Rica, two common treelets (Palicourea lasiorrachis and Cephaelis elata, both Rubiaceae) depend simultaneously on one hummingbird population (Lampornis calolaema) for pollination. Both species are distylous and self-incompatible. In laboratory experiments, we examined possible effec...


    pub_type: 杂志文章


    authors: Feinsinger P,Busby WH,Tiebout HM 3rd

    更新日期:1988-08-01 00:00:00

  • Constraints on an induced defense: the role of leaf area.

    abstract::Folivory results in both leaf damage and the loss of photosynthetic capacity. Leaf damage activates the production of induced defenses, but diminished photosynthetic capacity resulting from lost leaf area may impair a plant's ability to respond defensively. Because damage-induced nicotine production in Nicotiana sylve...


    pub_type: 杂志文章


    authors: Baldwin IT,Schmelz EA

    更新日期:1994-04-01 00:00:00

  • Nectar replenishment and pollen receipt interact in their effects on seed production of Penstemon roseus.

    abstract::Resource supply and pollen delivery are often thought to equally limit seed production in animal-pollinated plants. At equilibrium, plants should show no response to experimental pollen supplementation because resources limit seed set above the current level of pollen attraction, while experimental reduction in pollen...


    pub_type: 杂志文章


    authors: Ornelas JF,Lara C

    更新日期:2009-07-01 00:00:00

  • Microhabitat heterogeneity and population ecology of an herbivorous rodent, Microtus californicus.

    abstract::Existing models of microtine population regulation and life history evolution rely on data derived from empirical studies which assume spatial homogeneity of the sampling unit, and infer that population dynamics can be described adequately by aggregation of individuals differing in sex, age and social status. These as...


    pub_type: 杂志文章


    authors: Cockburn A,Lidicker WZ Jr

    更新日期:1983-09-01 00:00:00

  • Interactions of root and leaf herbivores on purple loosestrife (Lythrum salicaria).

    abstract::Interspecific interactions of herbivores sharing a host plant may be important in structuring herbivore communities. We investigated host plant-mediated interactions of root (Hylobius transversovittatus) and leaf herbivores (Galerucella calmariensis), released to control purple loosestrife (Lythrum salicaria) in North...


    pub_type: 杂志文章


    authors: Hunt-Joshi TR,Blossey B

    更新日期:2005-02-01 00:00:00

  • A climate room for precise regulation of temperature and humidity in connection with a temperature-regulated nest site for wood ants.

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    pub_type: 杂志文章


    authors: Bruin MK,Brandt DC,Körner FJ

    更新日期:1976-12-01 00:00:00

  • A new look at energy conversion in ectothermic and endothermic animals.

    abstract::In this review I offer a solution to the problem why endotherm populations appear to be so inefficient in converting food energy into body substance despite the fact that individual endotherms are just as 'efficient' in this respect as individual ectotherms. Calculated for individuals of half the adult mass both ectot...


    pub_type: 杂志文章


    authors: Wieser W

    更新日期:1985-07-01 00:00:00

  • Energy flow in four different field populations of Ancylus fluviatilis (Gastropoda-Basommatophora).

    abstract::Four brook-dwelling populations of Ancylus fluviatilis were studied. Data on life-cycle, specimen number, biomass and egg capsule biomass are reported. By means of experimental data on ingestion, assimilation, growth and egg-production, energy balances are calculated for whole populations.Mean annual biomass turned ou...


    pub_type: 杂志文章


    authors: Streit B

    更新日期:1976-09-01 00:00:00

  • The contribution of fungal enzymes to the digestion of leaves by Gammarus fossarum Koch (Amphipoda).

    abstract::Gut extracts of Gammarus fossarum liberated reducing substances (at pH values ≤7) and amino acids (pH≥7) from freshly shed oak leaves only after removal of soluble leaf phenols. When carboxymethylcellulose was used at a concentration equal to that of leaf cellulose, release of reducing substances was considerably high...


    pub_type: 杂志文章


    authors: Bärlocher F

    更新日期:1982-01-01 00:00:00

  • Survivorship of a declining population of southern elephant seals, Mirounga leonina, in relation to age, sex and cohort.

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    pub_type: 杂志文章


    authors: Pistorius PA,Bester MN,Kirkman SP

    更新日期:1999-11-01 00:00:00

  • Habitat selection by capercaillie in summer and autumn: Is bilberry important?

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    pub_type: 杂志文章


    authors: Storch I

    更新日期:1993-08-01 00:00:00

  • Cheek pouch capacities and loading rates of heteromyid rodents.

    abstract::Rodents of the family Heteromyidae are proficient gatherers and hoarders of seeds. A major component of their adaptive specialization for harvesting and transporting seeds is their spacious, fur-lined cheek pouches. Precise measurements of cheek pouch capacities are essential if ecologists are to understand the foragi...


    pub_type: 杂志文章


    authors: Vander Wall SB,Longland WS,Pyare S,Veech JA

    更新日期:1997-12-01 00:00:00

  • Friend or foe? A behavioral and stable isotopic investigation of an ant-plant symbiosis.

    abstract::In ant-plant symbioses, the behavior of ant inhabitants affects the nature of the interaction, ranging from mutualism to parasitism. Mutualistic species confer a benefit to the plant, while parasites reap the benefits of the interaction without reciprocating, potentially resulting in a negative impact on the host plan...


    pub_type: 杂志文章


    authors: Tillberg CV

    更新日期:2004-08-01 00:00:00

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    pub_type: 杂志文章


    authors: Hart DD

    更新日期:1992-08-01 00:00:00

  • A naturally heterogeneous landscape can effectively slow down the dispersal of aquatic microcrustaceans.

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    pub_type: 杂志文章


    authors: Juračka PJ,Declerck SA,Vondrák D,Beran L,Černý M,Petrusek A

    更新日期:2016-03-01 00:00:00

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    pub_type: 杂志文章


    authors: Cole CT,Stevens MT,Anderson JE,Lindroth RL

    更新日期:2016-06-01 00:00:00

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    pub_type: 杂志文章


    authors: Allen JA,Krauss KW,Hauff RD

    更新日期:2003-03-01 00:00:00

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    pub_type: 杂志文章


    authors: Turnbull TL,Buckley TN,Barlow AM,Adams MA

    更新日期:2014-10-01 00:00:00

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    pub_type: 杂志文章


    authors: Turner DP,Franz EH

    更新日期:1985-12-01 00:00:00