scholarly journals Rainfall variability and fine-scale life history tradeoffs help drive niche partitioning in a desert annual plant community

2017 ◽  
Vol 20 (10) ◽  
pp. 1231-1241 ◽  
Author(s):  
Robert K. Shriver
Keyword(s):  
Life History ◽  
Plant Community ◽  
Rainfall Variability ◽  
Niche Partitioning ◽  
Fine Scale ◽  
Annual Plant ◽  
Life History Tradeoffs ◽  
Desert Annual

scholarly journals Life history scaling and the division of energy in forests

2020 ◽  
Author(s):  
John M. Grady ◽  
Quentin D. Read ◽  
Sydne Record ◽  
Nadja Rüger ◽  
Phoebe L. Zarnetske ◽  
...  
Keyword(s):  
Life History ◽  
Power Law ◽  
Life Histories ◽  
Niche Partitioning ◽  
Field Tests ◽  
Forest Diversity ◽  
Growth And Survival ◽  
Size Classes ◽  
Old Growth Forest ◽  
Life History Tradeoffs

AbstractThe competition for light has long been regarded as a key axis of niche partitioning that promotes forest diversity, but available evidence is contradictory. Despite strong tradeoffs between growth and survival with light, field tests suggest neutral forces govern tree composition across forest gaps and resource use across size classes. Here we integrate scaling and niche theory, and use data from >114,000 woody plants in a tropical, old growth forest to test and predict patterns of niche partitioning with size and light. Consistent with predictions, the relative abundance, production, light capture, and richness of species in life histories with fast growth follow a power law relationship, increasing 1–2 orders of magnitude along a solar and size gradient. Competitive neutrality between size classes emerges above the sapling layer, where increasing access to light is counterbalanced by stronger self-shading. Convergent power law patterns of resource partitioning across taxa and spatial scale suggest general life history tradeoffs drive the organization of diverse communities.

scholarly journals DENSITY DEPENDENCE IN AN ANNUAL PLANT COMMUNITY: VARIATION AMONG LIFE HISTORY STAGES

2001 ◽  
Vol 71 (3) ◽  
pp. 423-446 ◽  
Author(s):  
Deborah E. Goldberg ◽  
Roy Turkington ◽  
Linda Olsvig-Whittaker ◽  
Andrew R. Dyer
Keyword(s):  
Life History ◽  
Density Dependence ◽  
Plant Community ◽  
Annual Plant ◽  
Life History Stages ◽  
Community Variation

The facilitative effects by seeds and seedlings on emergence from the seed bank of a desert annual plant community

Ecoscience ◽  
2002 ◽  
Vol 9 (1) ◽  
pp. 106-111 ◽  
Author(s):  
Christopher J. Lortie ◽  
Roy Turkington
Keyword(s):  
Plant Community ◽  
Seed Bank ◽  
Annual Plant ◽  
Desert Annual

scholarly journals The effect of initial seed density on the structure of a desert annual plant community

2002 ◽  
Vol 90 (3) ◽  
pp. 435-445 ◽  
Author(s):  
Christopher J. Lortie ◽  
Roy Turkington
Keyword(s):  
Plant Community ◽  
Seed Density ◽  
Annual Plant ◽  
Desert Annual ◽  
Initial Seed

Life history tradeoffs in humans increased life expectancy with sperm count reduction

10.2741/4745 ◽  
2019 ◽  
Vol 24 (4) ◽  
pp. 712-722
Author(s):  
Rui-An Wang
Keyword(s):  
Life History ◽  
Life Expectancy ◽  
Sperm Count ◽  
Life History Tradeoffs

scholarly journals Fitness costs of parasites explain multiple life history tradeoffs in a wild mammal

2020 ◽  
Author(s):  
Gregory F Albery ◽  
Alison Morris ◽  
Sean Morris ◽  
Fiona Kenyon ◽  
Daniel H Nussey ◽  
...  
Keyword(s):  
Life History ◽  
Fitness Costs ◽  
Wild Mammal ◽  
Life History Tradeoffs

Disentangling fine-scale effects of soil properties as key driver of plant community diversity on Roraima table mountain, Guayana Highlands

2021 ◽  
pp. 1-18
Author(s):  
Prímula Viana Campos ◽  
Carlos E.G.R. Schaefer ◽  
Eduardo Osório Senra ◽  
Pedro Lage Viana ◽  
Hugo Galvão Candido ◽  
...  
Keyword(s):  
Soil Properties ◽  
Plant Community ◽  
Scale Effects ◽  
Community Diversity ◽  
Fine Scale ◽  
Table Mountain ◽  
Key Driver ◽  
Guayana Highlands

Life-history tradeoffs revealed by seasonal declines in reproductive traits of Arctic-breeding shorebirds

2018 ◽  
Vol 49 (2) ◽  
pp. jav-01531 ◽  
Author(s):  
Emily L. Weiser ◽  
Stephen C. Brown ◽  
Richard B. Lanctot ◽  
H. River Gates ◽  
Kenneth F. Abraham ◽  
...  
Keyword(s):  
Life History ◽  
Reproductive Traits ◽  
Life History Tradeoffs

scholarly journals Are we missing the forest for the trees? Conspecific negative density dependence in a temperate deciduous forest

2021 ◽  
Author(s):  
Kathryn E. Barry ◽  
Stefan A. Schnitzer
Keyword(s):  
Life History ◽  
Density Dependence ◽  
Plant Community ◽  
Plant Diversity ◽  
Temperate Forest ◽  
Woody Plant ◽  
Community Level ◽  
Life History Strategies ◽  
Canopy Trees ◽  
Negative Density Dependence

AbstractOne of the central goals of ecology is to determine the mechanisms that enable coexistence among species. Evidence is accruing that conspecific negative density dependence (CNDD), the process by which plant seedlings are unable to survive in the area surrounding adults of their same species, is a major contributor to tree species coexistence. However, for CNDD to maintain diversity, three conditions must be met. First, CNDD must maintain diversity for the majority of the woody plant community (rather than merely specific groups). Second, the pattern of repelled recruitment must increase in with plant size. Third, CNDD must occurs across life history strategies and not be restricted to a single life history strategy. These three conditions are rarely tested simultaneously. In this study, we simultaneously test all three conditions in a woody plant community in a North American temperate forest. We examined whether the different woody plant growth forms (shrubs, understory trees, mid-story trees, canopy trees, and lianas) at different ontogenetic stages (seedling, sapling, and adult) were overdispersed – a spatial pattern indicative of CNDD – using spatial point pattern analysis across life history stages and strategies. We found that there was a strong signal of overdispersal at the community level. However, this pattern was driven by adult canopy trees. By contrast, understory plants, which can constitute up to 80% of temperate forest plant diversity, were not overdispersed as adults. The lack of overdispersal suggests that CNDD is unlikely to be a major mechanism maintaining understory plant diversity. The focus on trees for the vast majority of CNDD studies may have biased the perception of the prevalence of CNDD as a dominant mechanism that maintains community-level diversity when, according to our data, CNDD may be restricted largely to trees.

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