Results 1 to 10 of about 453,479 (202)

Reliably mapping low-intensity forest disturbance using satellite radar data

open access: yesFrontiers in Forests and Global Change, 2022
In the last decades tropical forests have experienced increased fragmentation due to a global growing demand for agricultural and forest commodities.
Chiara Aquino   +14 more
doaj   +4 more sources

Diversity–disturbance relationships: frequency and intensity interact [PDF]

open access: yesBiology Letters, 2012
An influential ecological theory, the intermediate disturbance hypothesis (IDH), predicts that intermediate levels of disturbance will maximize species diversity. Empirical studies, however, have described a wide variety of diversity–disturbance relationships (DDRs).
Alex R, Hall   +5 more
openaire   +5 more sources

Effects of Plateau Pika Disturbance on the Spatial Heterogeneity of Vegetation in Alpine Meadows

open access: yesFrontiers in Plant Science, 2021
Herbivory is one of the important factors that influence spatial heterogeneity of vegetation in grasslands. In this study, we focused on plateau pika (Ochotona curzoniae) to investigate the effects of the presence of small semi-fossorial herbivores and ...
Jie Li   +3 more
doaj   +1 more source

Spatiotemporal Coupling Relationship Between Plateau Pika Disturbance and Alpine Meadow Degradation

open access: yesShuitu baochi tongbao, 2023
[Objective] Plateau pika (Ochotona curzoniae) is a key species in the alpine meadow ecosystem of the Qinghai-Xizang Plateau. The coupling relationship between pika activity and meadow degradation was analyzed in order to further improve the observation ...
Zhao Jianyun   +5 more
doaj   +1 more source

Effect of Plateau Pika Disturbance on Plant Aboveground Biomass of Alpine Meadows at Two Different Scales

open access: yesPlants, 2022
Disturbance by small burrowing herbivores often has an impact on plant aboveground biomass of grassland because it makes grasslands into a mosaic of discrete vegetated surfaces and bare soil patches.
Xiaoxing Wei, Zhenggang Guo
doaj   +1 more source

Spatial Quantitative Model of Human Activity Disturbance Intensity and Land Use Intensity Based on GF-6 Image, Empirical Study in Southwest Mountainous County, China

open access: yesRemote Sensing, 2022
Vigorous human activities have strengthened the development and utilization of land, causing huge damage to the earth’s surface, while mining the disturbance pattern of human activities can capture the influence process and spatial interaction between ...
Xuedong Zhang   +4 more
doaj   +1 more source

Low- to Moderate-Level Forest Disturbance Effects on Plant Functional Traits and Associated Soil Microbial Diversity in Western Himalaya

open access: yesFrontiers in Forests and Global Change, 2021
This study quantifies the effect of low- to moderate-intensity anthropogenic activities and natural activities affecting less than 40% of the canopy cover on major plant functional traits and associated soil microbial diversity in western Himalayan ...
Shipra Singh
doaj   +1 more source

Disturbance intensity, disturbance extent and ocean climate modulate kelp forest understory communities [PDF]

open access: yesMarine Ecology Progress Series, 2020
Disturbances often control community structure by removing large dominant species, allowing new species to colonize. Disturbances vary in intensity and extent, and their effects on resident communities can depend on local environmental conditions. We tested the effects of disturbance intensity and extent on different functional groups of understory ...
Wernberg, Thomas   +3 more
openaire   +2 more sources

Multi-cyclone analysis and machine learning model implications of cyclone effects on forests

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2021
Past studies of cyclones (hurricanes, typhoons, tropical cyclones) disturbance showed that meteorological, topographical, and biological factors affect the patterns of forest disturbance intensity but left open the extent to which these findings were ...
Yanlei Feng   +2 more
doaj   +1 more source

Characteristics of the electrojet during intense magnetic disturbances [PDF]

open access: yesAnnales Geophysicae, 2018
Abstract. Hall current variations in different time sectors during six magnetic storms from the summer seasons in 2003 and 2005 (Ritter, 2018) are examined, namely three storms in the day–night meridional sector and three storms in the dawn–dusk sector. The sequence of the phenomena, their structure and positions, and the strength of the polar (PE) and
L. I. Gromova   +4 more
openaire   +8 more sources

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