Results 121 to 130 of about 101,760 (271)

Geomorphic Responses to Post‐Grazing Recovery and Stream Restoration in Semiarid Grassland Streams

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Semiarid grassland streams are sensitive to land use, climate, extreme discharges, and internal geomorphic thresholds that drive episodic erosion. Rooted in a process‐based philosophy and commonly applied to historically wood‐rich, beaver‐modified systems, low‐tech process‐based restoration using structures is increasingly being extended to ...
Owen Richardson, Ellen Wohl
wiley   +1 more source

Using phenology to improve invasive plant detection in fine‐scale hyperspectral drone‐based images

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Using drone‐based hyperspectral images of mixed temperate successional forests collected over a growing season, detection algorithms were produced for three invasive species of interest, which are not only invasive in Virginia but also much of the U.S.: Ailanthus altissima (tree of heaven), Elaeagnus umbellata (autumn olive), and Rhamnus davurica ...
Kelsey S. Huelsman   +3 more
wiley   +1 more source

Scale dependence in remotely sensed biodiversity: Leveraging continental‐scale imaging spectroscopy from the National Ecological Observatory Network

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Imaging spectroscopy enables large‐scale biodiversity assessment, yet spectral diversity metrics are scale dependent. Across 15 NEON ecosystems, we find that spectral richness increases sub‐linearly from 3600 m2 to 4 km2, whereas spectral divergence shows weak or inconsistent scaling with area, underscoring the importance of scale‐aware interpretation ...
Meghan T. Hayden   +8 more
wiley   +1 more source

Ground‐based robotic remote sensing for standardized biodiversity monitoring in coastal habitats

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Illustrated workflow of the proposed citizen‐to‐robot monitoring pipeline: (i) expert‐validated citizen observations are translated into AI models, (ii) deployed on a ground‐based robotic platform for proximal sensing of coastal dune habitats, (iii) enabling standardized detection of ecological targets (e.g., Pancratium maritimum & Brithys crini), and (
Giovanni Di Lorenzo   +5 more
wiley   +1 more source

Expansão da área foliar e acumulação de matéria seca durante o estabelecimento do girassol (Helianthus annuus l.) em dois tipos de solos, a diferentes temperaturas e teores de humidade [PDF]

open access: yes, 2005
O estabelecimento de uma cultura determina em larga escala a sua produtividade e é, em grande medida, controlado pela temperatura e pela humidade do solo.
Abreu, Francisco, Andrade, José
core  

Spraying drones: efficacy of integrating an avian repellent with drone hazing to elicit blackbird flock dispersal and abandonment of sunflower fields

open access: yesWildlife Biology, EarlyView.
Multiple management strategies exist to combat bird damage to agriculture. We explored combining two tools, drones as frightening devices and an avian repellent, to assess effectiveness of an integrated method to deter large flocks on complex landscapes. We evaluated the ability of a spraying drone (DJI Agras MG‐1P) deploying Avian Control (i.e. active
Jessica L. Duttenhefner   +2 more
wiley   +1 more source

Alocação da biomassa e correlações morfofisiológicas em leguminosas forrageiras com hábitos de crescimento contrastantes

open access: yesScientia Agricola, 2002
A análise da alocação da biomassa e a correlação entre variáveis morfofisiológicas permitem maior entendimento do estabelecimento, produção e persistência de espécies perenes, em trabalhos de melhoramento genético, manejo e ecologia de plantas ...
Scheffer-Basso Simone Meredith   +2 more
doaj  

Efecto del arreglo de la carga frutal sobre la participacion de materia seca, rendimiento y calidad de semillas de Cucumis melo L var. Inodorus cv. Honey dew organico y bajo invernadero. [PDF]

open access: yes, 2004
62 p.Se evaluó el efecto de la distribución de la carga frutal en el rendimiento y calidad de semillas de Cucumis melo cv. Honey dew, en condiciones de manejo orgánico, bajo invernadero, en la Estación Experimental Panguilemo, ubicada en la comuna de ...
Espinoza Vasquez, Rodrigo Omar   +1 more
core  

Facilitating macrosystem biology with organismal‐scale airborne remote sensing: Challenges and opportunities

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Emergent ecosystem properties, such as population and trait distributions, biodiversity and energy and water fluxes, occur because of the dynamic interactions of individuals in their environment.
Sarah J. Graves   +8 more
wiley   +1 more source

Índice de área foliar e relação folha/caule do estilosantes Campo Grande. [PDF]

open access: yes, 2012
O índice de área foliar está relacionado com a realização de fotossíntese e produtividade das plantas. Nas forrageiras, a área foliar e a relação folha/caule têm importância para a nutrição animal e manejo do pasto, porém, a maioria dos trabalhos é ...
ARAÚJO, E. C. E.   +6 more
core  

Home - About - Disclaimer - Privacy