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You searched for: Journal name journal of ecology Remove constraint Journal name: journal of ecology Publication year rev 7996-2004 Remove constraint Publication year rev: 7996-2004 Source 2004 v.92 no.4 Remove constraint Source: 2004 v.92 no.4
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1. Community level engineering effects of Triglochin maritima (seaside arrowgrass) in a salt marsh in northern New England, USA

Author:
BENJAMIN N. FOGEL; CAITLIN M. CRAIN; MARK D. BERTNESS
Source:
journal of ecology 2004 v.92 no.4 pp. 589-597
ISSN:
0022-0477
Subject:
Triglochin maritima; salt marsh plants; salt marshes; flooded conditions; plant stress; species diversity; habitats; soil salinity; seeds; seed dispersal; plant communities; root growth; greenhouse experimentation; surface water level
Abstract:
... 1 Ecosystem engineers can influence other organisms indirectly by modifying their physical habitat and are common in all natural communities. We examined the mechanisms underlying the effects of engineering by seaside arrowgrass, Triglochin maritima (Juncaginaceae), in a northern New England forb panne. Within these waterlogged areas, T. maritima creates elevated rings that support high plant cove ...
DOI:
10.1111/j.0022-0477.2004.00903.x

2. Disturbance and regeneration dynamics of an old‐growth North Patagonian rain forest in Chiloé Island, Chile

Author:
ALVARO G. GUTIÉRREZ; JUAN J. ARMESTO; JUAN CARLOS ARAVENA
Source:
journal of ecology 2004 v.92 no.4 pp. 598-608
ISSN:
0022-0477
Subject:
forest trees; rain forests; old-growth forests; shade tolerance; plant competition; tree growth; tree and stand measurements; forest stands; natural regeneration; growth rings; overstory; stand structure; stand composition; canopy gaps; Chile
Abstract:
... 1 Few studies have addressed the mechanisms of coexistence of shade‐tolerant and intolerant tree species in the canopy of old‐growth, lowland rain forests of southern South America. We explored the hypothesis that their forest dynamics result from frequent, single tree‐fall gap episodes. 2 We analysed the disturbance regime and assessed the regeneration modes of shade‐tolerant and intolerant canop ...
DOI:
10.1111/j.0022-0477.2004.00891.x

3. Diversity and dominance in palm (Arecaceae) communities in terra firme forests in the western Amazon basin

Author:
JAANA VORMISTO; JENS‐CHRISTIAN SVENNING; PAMELA HALL; HENRIK BALSLEV
Source:
journal of ecology 2004 v.92 no.4 pp. 577-588
ISSN:
0022-0477
Subject:
Arecaceae; geographical distribution; tropical rain forests; plant communities; spatial distribution; botanical composition; regression analysis; environmental factors; trees; Ecuador; Peru; Amazonia
Abstract:
... 1 Current discussions about the structure and functioning of tropical plant communities revolve around whether tropical forests are dominated by sets of widespread and locally abundant species and the relative importance of environmental variation and geographical distance as determinants of variation in species composition. We explored these questions by examining diversity and dominance patterns ...
DOI:
10.1111/j.0022-0477.2004.00904.x

4. Diversity of gall‐inducing insects in a Mexican tropical dry forest: the importance of plant species richness, life‐forms, host plant age and plant density

Author:
PABLO CUEVAS‐REYES; MAURICIO QUESADA; PAUL HANSON; RODOLFO DIRZO; KEN OYAMA
Source:
journal of ecology 2004 v.92 no.4 pp. 707-716
ISSN:
0022-0477
Subject:
dry environmental conditions; plant density; deciduous forests; wet environmental conditions; plant pests; galls; forest trees; lianas; riparian forests; tropical forests; host plants; botanical composition; Cecidomyiidae; plant age; phytophagous insects; forest insects; shrubs; herbaceous plants; habitats; Mexico
Abstract:
... 1 We tested four hypotheses concerning the variation in species richness of gall‐inducing insects (GII) in plant communities. We sampled deciduous and riparian habitats in a tropical dry forest at Chamela‐Cuixmala Biosphere Reserve in western Mexico, that differ in phenology and moisture availability. 2 GII species richness might be expected to increase with the richness of host plant species, wit ...
DOI:
10.1111/j.0022-0477.2004.00896.x

5. Evidence for limiting similarity in a sand dune community

Author:
WENDY J. STUBBS; J. BASTOW WILSON
Source:
journal of ecology 2004 v.92 no.4 pp. 557-567
ISSN:
0022-0477
Subject:
spatial distribution; niches; plant characteristics; plant competition; intraspecific competition; New Zealand
Abstract:
... 1 We sought evidence among the plant species of a New Zealand sand dune community that limiting similarity controls the ability of species to coexist. Sampling was at four spatial scales, from a single point up to a scale of 50 m². Twenty‐three functional characters were measured on each of the species, covering the morphology of the shoot and root systems and nutrient status, and intended to repr ...
DOI:
10.1111/j.0022-0477.2004.00898.x

6. Initiation and maintenance of vegetation mosaics in an Arctic salt marsh

Author:
J. R. MCLAREN; R. L. JEFFERIES
Source:
journal of ecology 2004 v.92 no.4 pp. 648-660
ISSN:
0022-0477
Subject:
Puccinellia; plant growth; Anser caerulescens; soil water content; soil nutrients; nutrient availability; soil organic matter; plant establishment; infiltration (hydrology); soil salinity; herbivores; salt marshes; foraging; soil density; Manitoba
Abstract:
... 1 Vegetation mosaics of grassland and exposed soil are often the outcome of intense herbivory and represent alternate stable states, although the vegetational and soil processes that both initiate and maintain the states in response to herbivory are poorly understood. 2 The vegetation mosaic resulting from grubbing by geese was examined on the intertidal flats at La Pérouse Bay, Manitoba. Soil pro ...
DOI:
10.1111/j.0022-0477.2004.00897.x

7. Modelling effects of litter quality and environment on peat accumulation over different time‐scales

Author:
ILKA E. BAUER
Source:
journal of ecology 2004 v.92 no.4 pp. 661-674
ISSN:
0022-0477
Subject:
peat; peatlands; plant litter; degradation; bogs; fens; water table; ecological succession; organic matter; botanical composition; plant communities; temporal variation; history; equations; simulation models; Sphagnum
Abstract:
... 1 A model was developed that simulates the production and decay of annual peat cohorts over time‐scales from years to millennia. The model was used to investigate potential effects of environment and litter‐quality related parameters on peat accumulation, and to examine how well past changes in net accumulation can be reconstructed from the peat core record. 2 Sensitivity analysis of the model ind ...
DOI:
10.1111/j.0022-0477.2004.00905.x

8. Plant and soil responses to neighbour removal and fertilization in Alaskan tussock tundra

Author:
M. SYNDONIA BRET‐HARTE; ERICA A. GARCÍA; VINCIANE M. SACRÉ; JOSHUA R. WHORLEY; JOANNA L. WAGNER; SUZANNE C. LIPPERT; F. STUART CHAPIN III
Source:
journal of ecology 2004 v.92 no.4 pp. 635-647
ISSN:
0022-0477
Subject:
plant growth; grasses; canopy; shrubs; plant communities; soil nutrients; nutrient availability; nitrogen; soil; tundra; soil treatment; Betula nana; Rhododendron tomentosum; ecological competition; mosses and liverworts; phosphorus; lichens; Alaska
Abstract:
... 1 Species interactions will probably be important in determining plant community structure as availability of soil nutrients changes due to climate warming or anthropogenic N deposition. We removed dominant species, combinations of species, and entire plant functional types, in fertilized and unfertilized plots in tussock tundra. 2 After 2 years, graminoids responded more strongly to fertilizer th ...
DOI:
10.1111/j.0022-0477.2004.00902.x

9. Plant regeneration directs changes in grassland composition after extreme drought: a 13‐year study in southern Switzerland

Author:
A. STAMPFLI; M. ZEITER
Source:
journal of ecology 2004 v.92 no.4 pp. 568-576
ISSN:
0022-0477
Subject:
botanical composition; ecological succession; weather; environmental factors; ecological invasion; grasslands; Switzerland
Abstract:
... 1 The cover of plant species was recorded annually from 1988 to 2000 in nine spatially replicated plots in a species‐rich, semi‐natural meadow at Negrentino (southern Alps). This period showed large climatic variation and included the centennial maximum and minimum frequency of days with ≥ 10 mm of rain. 2 Changes in species composition were compared between three 4‐year intervals characterized by ...
DOI:
10.1111/j.0022-0477.2004.00900.x

10. Soil‐related habitat specialization in dipterocarp rain forest tree species in Borneo

Author:
PETER A. PALMIOTTO; STUART J. DAVIES; KRISTIINA A. VOGT; MARK S. ASHTON; DANIEL J. VOGT; PETER S. ASHTON
Source:
journal of ecology 2004 v.92 no.4 pp. 609-623
ISSN:
0022-0477
Subject:
tropical rain forests; seedling growth; Shorea; shade tolerance; spatial distribution; seedlings; niches; forest soils; Humults; phosphorus; Dryobalanops; Hopea; mycorrhizae; forest trees; soil water; tree growth; soil nutrients; plant communities; edaphic factors; Udults; forest ecology; Borneo
Abstract:
... 1 We conducted a field experiment to test whether aggregated spatial distributions were related to soil variation in locally sympatric tree species in the rain forests of Sarawak, Malaysia. Dryobalanops aromatica, Shorea laxa, and Swintonia schwenkii are naturally aggregated on low‐fertility humult ultisols, Dryobalanops lanceolata and Hopea dryobalanoides on moderate‐fertility udult ultisols and ...
DOI:
10.1111/j.0022-0477.2004.00894.x

11. Why do pollination generalist and specialist plant species show similar reproductive susceptibility to habitat fragmentation?

Author:
LORENA ASHWORTH; RAMIRO AGUILAR; LEONARDO GALETTO; MARCELO ADRIÁN AIZEN
Source:
journal of ecology 2004 v.92 no.4 pp. 717-719
ISSN:
0022-0477
Subject:
plant-insect relations; habitat fragmentation; mutualism; pollination; pollinating insects
Abstract:
... 1 Although reproductive success of pollination specialist plants has been predicted to be more sensitive to habitat fragmentation than that of generalist plants, recent results indicate that effects do not differ between plants with different degrees of specialization. 2 We provide an explanation for such unexpected results by linking evidence that specialization of plant–pollinator interactions i ...
DOI:
10.1111/j.0022-0477.2004.00910.x

12. Demographic analysis of dormancy and survival in the terrestrial orchid Cypripedium reginae

Author:
MARC KÉRY; KATHARINE B. GREGG
Source:
journal of ecology 2004 v.92 no.4 pp. 686-695
ISSN:
0022-0477
Subject:
temporal variation; Cypripedium; plant growth; geographical distribution; mathematical models; Odocoileus virginianus; equations; grazing; herbivores; clones; dormancy; climatic factors; population dynamics; West Virginia
Abstract:
... 1 We use capture‐recapture models to estimate the fraction of dormant ramets, survival and state transition rates, and to identify factors affecting these rates, for the terrestrial orchid Cypripedium reginae. We studied two populations in West Virginia, USA, for 11 years and investigated relationships between grazing and demography. Abe Run's population was small, with moderate herbivory by deer ...
DOI:
10.1111/j.0022-0477.2004.00885.x

13. Demography of American chestnut populations: effects of a pathogen and a hyperparasite

Author:
ANITA L. DAVELOS; ANDREW M. JAROSZ
Source:
journal of ecology 2004 v.92 no.4 pp. 675-685
ISSN:
0022-0477
Subject:
tree growth; mathematical models; Castanea dentata; Hypovirus; forest trees; host-pathogen relationships; tree age; biological control agents; virulence; Cryphonectria parasitica; population growth; population structure; tree mortality; biological control; Michigan
Abstract:
... 1 Matrix models were used to evaluate the effect of chestnut blight infection on transition probabilities and population growth rates for American chestnuts. Disease‐free, epidemic and recovering (i.e. pathogen infected with a double‐stranded (ds) RNA hypovirus) populations were compared. 2 Population growth rates (λ) did not differ significantly over time or with disease status. However, predicte ...
DOI:
10.1111/j.0022-0477.2004.00907.x

14. Effects of tephra deposition on mire vegetation: a field experiment in Hokkaido, Japan

Author:
S. HOTES; P. POSCHLOD; H. TAKAHASHI; A. P. GROOTJANS; E. ADEMA
Source:
journal of ecology 2004 v.92 no.4 pp. 624-634
ISSN:
0022-0477
Subject:
wetland plants; wetlands; tephra; botanical composition; hydrochemistry; field experimentation; ecological succession; Japan
Abstract:
... 1 The influence of tephra (aerially transported volcanic ejecta) on mire vegetation was investigated in a field experiment at Sarobetsu Mire, northern Hokkaido, Japan, which simulated relatively thin, widespread tephras. It was carried out in the centre of a raised part of the mire in a Carex middendorffii–Sphagnum papillosum community. 2 We tested the effects of varying tephra layer thickness, gr ...
DOI:
10.1111/j.0022-0477.2004.00901.x

15. Local adaptation of the clonal plant Ranunculus reptans to flooding along a small‐scale gradient

Author:
JOHN P. M. LENSSEN; MARK VAN KLEUNEN; MARKUS FISCHER; HANS DE KROON
Source:
journal of ecology 2004 v.92 no.4 pp. 696-706
ISSN:
0022-0477
Subject:
inflorescences; Ranunculus; carbohydrates; floods; microhabitats; internodes; plant adaptation; duration; genotype; length; genetic variation; plant morphology; flooding tolerance; roots
Abstract:
... 1 Plant species are known to segregate along small‐scale flooding gradients. We tested whether differences in flooding duration can also result in genetic differentiation in the clonal species Ranunculus reptans, which naturally grows in both a lakeside microhabitat and a landside microhabitat with shorter periods of flooding. 2 We compared traits related to fitness, and clonal life‐history traits ...
DOI:
10.1111/j.0022-0477.2004.00895.x