Results 61 to 70 of about 1,315 (167)

Energy Channel Coupling by Mid‐Trophic Level Fish Challenges the Landscape Theory for Food Web Architecture in a Large Tropical Lake Ecosystem

open access: yesEcology and Evolution, Volume 16, Issue 8, August 2026.
Lake Turkana, a large tropical East African Great Lake, is an ideal model for examining how consumer fish species may mediate the coupling of fast and slow energy channels within food webs. We explored the ecological niche dynamics of five important Lake Turkana fish species across ontogeny and used a Bayesian isotope mixing model approach to identify ...
Madison F. Muehl   +4 more
wiley   +1 more source

Barnyardgrass control using tank-mixed herbicides with saflufenacil and its influence in photosynthesis and chlorophyll fluorescence

open access: yesCiência Rural
: The objectives of this research were to evaluate the interaction between herbicides mixed with saflufenacil for the control of barnyardgrass and to determine the effect on photosynthetic and chlorophyll fluorescence parameters.
Cassiano Salin Pigatto   +6 more
doaj   +1 more source

Uses of graminaceous plants as food by man in West Africa

open access: yesBothalia: African Biodiversity & Conservation, 1983
The family Gramineae, with over 7 000 species is the fifth largest family in the plant kingdom, and has over the years played a very important role in providing food for man in the form of cereals among which the most important and well-known examples ...
M. S. Chuah
doaj   +1 more source

Comparing autumn duck use of intensely managed wetlands in Michigan using a novel approach

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 5, July 2026.
Camera traps, a relatively novel method for assessing waterfowl use of wetlands, show ducks in southeastern Michigan are influenced by hunting disturbance, vegetation type, season progression, and diel period. Abstract Socioeconomic value derived from duck hunting has contributed to autumn habitat use becoming a particular focus for the natural ...
Trey McClinton   +2 more
wiley   +1 more source

Harvested Forages for Horses From a Feeding Perspective—A Systematic Literature Review

open access: yesGrass and Forage Science, Volume 81, Issue 3, July-September 2026.
ABSTRACT Due to the important role of forages in equine diets, the aim of this project was to perform a systematic literature review of the area with relevance for Northern Europe. The objectives were to identify the currently available published peer‐reviewed literature on forages for horses from an equine feeding perspective and to summarize it to ...
Sara Ringmark   +3 more
wiley   +1 more source

Characterization of Microsatellite and ISSR polymorphisms among Echinochloa (L.) Beauv. spp. in Japan

open access: yesBreeding Research, 2004
日本産ヒエ属5種を用い,ヒエ属で同定されているマイクロサテライトおよびInter simple sequence repeat(ISSR)領域の多型を調査した.日本産ヒエ属で多型を示す3つのマイクロサテライトマーカ(EC1,EC3およびEC5)を選抜し,検出された合計16アレルの塩基配列を決定した.これらのアレルの組み合わせによって供試170系統を14のタイプに分類した.ヒエにみられたタイプはイヌビエにみられた11タイプのうちの2タイプに限定され,4倍性であるタイヌビエは6倍性の他の種と明確に区別することができた.またISSR領域の多型の解析でもヒエ属5種143系統を14のタイプに分類できた.ここでもヒエでみられたタイプがイヌビエ9タイプの中の1タイプに限定された ...
Nozawa, Shigeki   +2 more
openaire   +2 more sources

Optimizing Herbicide Application Parameters in Rice Using UAVs: Performance and Comparison With Conventional Technologies

open access: yesWeed Research, Volume 66, Issue 4, July/August 2026.
ABSTRACT Unmanned aerial vehicles (UAVs) are increasingly considered a promising alternative to conventional ground‐based herbicide application in rice production systems; however, their effectiveness depends strongly on optimizing operational parameters that influence spray deposition, biological efficacy, and crop response.
Husrev Mennan   +2 more
wiley   +1 more source

Níveis de dano econômico para decisão de controle de capim-arroz (Echinochloa spp.) em arroz irrigado (Oryza sativa) Economic threshold level for barnyardgrass (Echinochloa spp.) control decision in flooded rice (Oryza sativa)

open access: yesPlanta Daninha, 2007
O nível de dano econômico (NDE) para monitoramento das infestações de capim-arroz em lavouras de arroz irrigado permite adotar medidas de manejo na cultura e usar herbicidas de maneira racional. Objetivou-se com o trabalho determinar NDE para capim-arroz,
L. Galon   +6 more
doaj   +1 more source

Blast disease associated with grass weeds in rice production systems of Paraguay

open access: yesTropical and Subtropical Agroecosystems
Background: Several fungal species within the genus Pyricularia are associated with blast diseases affecting Poaceae crops, including wheat, rice, oat, barley, triticale, and various grass weeds.
Karina Morinigo-Gimenez   +7 more
doaj   +1 more source

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