Results 61 to 70 of about 274,835 (294)

Site Factors Influence on Herbaceous Understory Diversity in East Texas Pinus palustris savannas [PDF]

open access: yes, 2018
Longleaf pine (Pinus palustris) savannas were once dominant across the southeastern U.S., including East Texas and parts of western and central Louisiana.
Farrish, Kenneth, PhD   +4 more
core   +1 more source

Spatial metrics in fire ecology: seeking consistency amidst complexity

open access: yesBiological Reviews, EarlyView.
ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey   +5 more
wiley   +1 more source

Impact of different forest types on soil microbial biomass and microbial entropy in the karst region of southwestern China

open access: yesFrontiers in Plant Science
Soil microbial biomass and microbial entropy are used as important indicators of soil quality. However, the effects of forest-stand types remain poorly understood. This study focused on three stands of Cryptomeria japonica var. sinensis (CJ), Liquidambar
Yan Wu   +8 more
doaj   +1 more source

Extent, characteristics and policy applications of Key Biodiversity Areas

open access: yesBiological Reviews, EarlyView.
ABSTRACT A global standard for the identification of Key Biodiversity Areas (KBAs) was published 10 years ago to provide a unified set of criteria for identifying ‘sites of significance for the global persistence of biodiversity’. We review the initiative's origins, the KBA identification process, characteristics of the current network, threats, policy
Stuart H. M. Butchart   +57 more
wiley   +1 more source

Fires in nature: a review of the challenges for wild animals

open access: yesEuropean Journal of Ecology, 2021
Animals living in the wild are exposed to numerous challenges, such as fires, that can lead to suffering. The impacts of fire have been studied in different branches of ecology, but studies of its effects on the welfare of individual animals remain ...
JARA GUTIÉRREZ, Javier de Miguel
doaj  

Simulating the effects of different spatio-temporal fire regimes on plant metapopulation persistence in a Mediterranean-type region [PDF]

open access: yes, 2008
1. Spatio-temporal fire regimes are likely to shift with changes in land use and climate. Such a shift in the disturbance regime has been proposed from recent reconstructions of the regional fire history in the Mediterranean-type woodlands and shrublands
Abbott   +46 more
core   +2 more sources

A neuro‐behavioural model of neophobia

open access: yesBiological Reviews, EarlyView.
ABSTRACT Fear can be defined as the internal neurological state that releases a repertoire of behaviours an animal performs to reduce the effect of an aversive factor. Neophobia, the fear of novelty, is a fundamental behavioural trait observed across a wide range of species from arthropods to humans.
Arik Dorfman, Aziz Subach, Inon Scharf
wiley   +1 more source

Seed production, infestation, and viability in Acacia tortilis (synonym: Vachellia tortilis) and Acacia robusta (synonym: Vachellia robusta) across the Serengeti rainfall gradient [PDF]

open access: yes, 2017
Tree recruitment in savannas proceeds in multiple stages characterized by successive filters occurring at the seed and seedling stages. The “demographic bottleneck” hypothesis suggests that such filters ultimately restrict tree density and prevent trees ...
Anderson, T. Michael   +3 more
core   +1 more source

Ecology and evolution of pyrazines in insects

open access: yesBiological Reviews, EarlyView.
ABSTRACT Chemical communication is the oldest and most widespread form of signalling among and within organisms. Among the many compounds involved in such communication, pyrazines – nitrogen‐containing heterocyclic molecules – are especially intriguing due to their widespread occurrence across the tree of life, from bacteria and fungi to insects and ...
Zowi Oudendijk   +2 more
wiley   +1 more source

Effects of fuel treatments on California mixed-conifer forests

open access: yesCalifornia Agriculture, 2015
Land managers implement forest fuel reduction treatments, including prescribed fire, mastication, and hand- and mechanical thinning, to modify wildfire behavior.
E Winford, J Stevens, H Safford
doaj   +2 more sources

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