Positive-feedback Switches in Plant Communities

Advances in ecological research/Advances in Ecological Research, Journal Year: 1992, Volume and Issue: unknown, P. 263 - 336

Published: Jan. 1, 1992

Language: Английский

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Defining pyromes and global syndromes of fire regimes

Proceedings of the National Academy of Sciences, Journal Year: 2013, Volume and Issue: 110(16), P. 6442 - 6447

Published: April 4, 2013

Fire is a ubiquitous component of the Earth system that poorly understood. To date, global-scale understanding fire largely limited to annual extent burning as detected by satellites. This problematic because multidimensional, and focus on single metric belies its complexity importance within system. address this, we identified five key characteristics regimes—size, frequency, intensity, season, extent—and combined new existing global datasets represent each. We assessed how these regime are related patterns climate, vegetation (biomes), human activity. Cross-correlations demonstrate only certain combinations possible, reflecting fundamental constraints in types regimes can exist. A Bayesian clustering algorithm syndromes regimes, or pyromes. Four pyromes distinctions between crown, litter, grass-fueled fires, relationship biomes climate not deterministic. Pyromes were partially discriminated basis available moisture rainfall seasonality. Human impacts also affected globally apparent driver fifth unique pyrome represents human-engineered modifications characteristics. Differing climates may be represented same pyrome, implying pathways change future response changes activity difficult predict.

Language: Английский

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Reciprocal interactions and adjustments between fluvial landforms and vegetation dynamics in river corridors: A review of complementary approaches

Earth-Science Reviews, Journal Year: 2007, Volume and Issue: 84(1-2), P. 56 - 86

Published: June 7, 2007

Language: Английский

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Contrasting microclimates among clearcut, edge, and interior of old-growth Douglas-fir forest

Agricultural and Forest Meteorology, Journal Year: 1993, Volume and Issue: 63(3-4), P. 219 - 237

Published: March 1, 1993

Language: Английский

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Impacts of Disturbance on Detritus Food Webs in Agro-Ecosystems of Contrasting Tillage and Weed Management Practices

Advances in ecological research/Advances in Ecological Research, Journal Year: 1995, Volume and Issue: unknown, P. 105 - 185

Published: Jan. 1, 1995

Language: Английский

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Functional diversity revealed by removal experiments

Trends in Ecology & Evolution, Journal Year: 2003, Volume and Issue: 18(3), P. 140 - 146

Published: March 1, 2003

Language: Английский

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Drought disturbance from climate change: response of United States forests

The Science of The Total Environment, Journal Year: 2000, Volume and Issue: 262(3), P. 205 - 220

Published: Nov. 1, 2000

Language: Английский

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Selecting areas for species persistence using occurrence data

Biological Conservation, Journal Year: 2000, Volume and Issue: 96(3), P. 331 - 345

Published: Dec. 1, 2000

Language: Английский

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Mechanistic Approaches to Community Ecology: A New Reductionism

American Zoologist, Journal Year: 1986, Volume and Issue: 26(1), P. 81 - 106

Published: Feb. 1, 1986

Mechanistic approaches to community ecology are those which employ individual— ecological concepts—those of behavioral ecology, physiological and ecomorphology— as theoretical bases for understanding patterns. Such approaches, began explicitly about a decade ago, just now coming into prominence. They stand in contrast more traditional such MacArthur Levins (1967),which interpret almost strictly terms "megaparameters.".

Language: Английский

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A comprehensive framework for the evaluation of metacommunity structure

Oikos, Journal Year: 2010, Volume and Issue: 119(6), P. 908 - 917

Published: April 16, 2010

The metacommunity framework is a powerful platform for evaluating patterns of species distribution in geographic or environmental space. Idealized (checkerboard, Clementsian, evenly spaced, Gleasonian and nested distributions) give the shape. Each pattern represents an area multidimensional continuum structures; however, current approach to analysis spatial structure metacommunities incomplete. To address this, we describe additional non-random structures illustrate how they may be discerned via objective criteria. First, distinguish three distinct forms loss structures, which should improve identification structuring mechanisms patterns. Second, define six quasi-structures that are consistent with conceptual underpinnings Gleasonian, spaced distributions. Finally, demonstrate combinations at smaller extents aggregate form Clementsian larger extents. These refinements facilitate best-fit patterns, associated mechanisms, informative scales interpretation. This analytical applied network properties within communities (i.e. interspecific interactions) has broad application ecology biogeography.

Language: Английский

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