Results 81 to 90 of about 1,615 (262)

Estimating Grazing Land Acres Across the Contiguous United States Using Machine Learning Methods

Remote Sensing
Quantifying the extent of rangeland and pastureland (collectively termed grazing lands herein) in the US is a critical first step in many grazing lands assessments. This research presents a model-assisted framework to estimate grazing land acreage within
Mingyue Hu, Cindy Yu, Zhengyuan Zhu, Sarah McCord, Loretta J. Metz   +4 more
doaj   +1 more source

Functional traits can explain coordinated seedling responses to drought and freezing stress

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Limited plant establishment creates demographic bottlenecks that can alter vegetation trajectories in changing environments, yet it is unclear how common eco‐evolutionary indicators of plant strategy shape early response to key stressors.
Julie E. Larson, Bradley J. Butterfield, Seth M. Munson, Dylan F. Neuhaus, Stella M. Copeland   +4 more
wiley   +1 more source

UAV-based remote sensing for rangeland monitoring, a generalized and transparent workflow with an Australian lead

Ecological Informatics
Vegetation is a central indicator of rangeland condition, yet monitoring it across vast and heterogeneous dryland landscapes remains a major challenge. Although the advantages of remote sensing and unmanned aerial vehicles (UAVs) have been recognized for
Toufique A. Soomro, Allister Clarke, Jonathan Medway, Bin Liang, Stephen Summerhayes, Juan Pablo Guerschman, Robert de Ligt, Hugh Armitage, Clinton Ayers   +8 more
doaj   +1 more source

Relating Fire Occurrence to Weather Conditions on the Great Basin Rangelands [PDF]

Journal of Range Management, 1980
Results are presented to demonstrate the association between weather conditions and fire danger on the rangelands of the Great Basin. It was found that precipitation frequency and duration are physically related to fire occurrence in a complex manner. A climatic relationship also exists between monthly temperature and the corresponding total number of ...
openaire   +1 more source

Abiotic variables drive different aspects of fish community trait variation and species richness across the continental United States

Journal of Animal Ecology, EarlyView.
Trait distributions provide insight into how niches overlap within a broader trait space. By integrating individual‐level trait observations from different communities, we can explore how facets of trait dimensionality vary across environmental conditions.
Alicia McGrew, Crysta Gantz, Brigid Wills, Benjamin Baiser, Sydne Record, Phoebe L. Zarnetske, Angela L. Strecker   +6 more
wiley   +1 more source

Resource Availability and Habitat Quality Drive Time‐Lag Effects in High‐Altitude Ungulate Distribution

Integrative Zoology, EarlyView.
Our analysis revealed that while climate strongly influenced species distributions, habitat change drove most observed delays in distribution responses. In terms of community ecology, dispersed communities exhibited shorter time lags than concentrated groups. Analyses of lag duration revealed a 5–6‐year distribution lag effect in high‐altitude ungulate
Lu Wang, Xiuming Li, Ben Huang, Xiaoxue Li, Jizhen Chen, Ziyan Liao, Kun Jin   +6 more
wiley   +1 more source

Rangeland Degradation, Vegetation Dynamics, and Household Income in a Mongolian Pastoral System: Panel Evidence from Öndörshireet Soum

Land
Degraded rangelands in semi-arid pastoral systems are widely associated with declining vegetation, soil carbon loss, and worsening household livelihoods.
Enkhbayar Davaatseren, Tsolmon Sodnomdavaa, Erkhetbayar Enkhbayar, Sainbuyan Bayarsaikhan, Urtnasan Mandakh   +4 more
doaj   +1 more source

Strategic priorities for rehabilitation of desertified areas [PDF]

BIO Web of Conferences
Desertification is a global socio-ecologial - economic problem. Desertification has affected the South of Russia, including the territory of Kalmykia. The problem of desertification poses a threat to all sectors of the Republic’s economy, especially the ...
Bakinova Tatyana, Naminova Kermen, Sanan Orosov, Vladimir Batyrov, Galina Konieva   +4 more
doaj   +1 more source

Decades of Enclosure Protection Exert Composite Effects on Grassland Grasshopper Communities

Integrative Zoology, EarlyView.
Decades of enclosure protection have altered grasshopper community structure, with species‐specific effects on population dynamics. For the low‐mobility grasshopper Chorthippus fallax, abundance did not differ strongly between exclosure‐protected and overgrazed areas, but its egg development duration was longer in exclosures. The two C.
Dan‐dan Feng, Hui‐feng Zhao, Ya‐hui Men, Jing Li, Mei‐ling Yang, Cai‐qing Yang, Bing Chen, Ai‐bing Zhang   +7 more
wiley   +1 more source

Numerical Assessments of Leaf Area Index in Tropical Savanna Rangelands, South Africa Using Landsat 8 OLI Derived Metrics and In-Situ Measurements

Remote Sensing, 2019
Knowledge on rangeland condition, productivity patterns and possible thresholds of potential concern, as well as the escalation of risks in the face of climate change and variability over savanna grasslands is essential for wildlife/livestock management ...
Timothy Dube, Santa Pandit, Cletah Shoko, Abel Ramoelo, Dominic Mazvimavi, Tatenda Dalu   +5 more
doaj   +1 more source