نتایج جستجو برای: geum

تعداد نتایج: 245  

Journal: :Geoscience Letters 2022

Abstract In recent years, the damages resulting from abnormal hydrometeorological climate have substantially increased over world due to variability and change. Especially, flood damage has been severely occurred during season almost every year in Korea. For an example, we had localized heavy rainfalls for 54 days of 2020 huge property loss life. Therefore, study needs be conducted improve pred...

Journal: :Remote Sensing 2022

Understanding the concentration and distribution of cyanobacteria blooms is an important aspect managing water quality problems protecting aquatic ecosystems. Airborne hyperspectral imagery (HSI)—which has high temporal, spatial, spectral resolutions—is widely used to remotely sense bloom, it provides bloom over a wide area. In this study, we determined input bands that were relevant in effecti...

Journal: :Giscience & Remote Sensing 2023

Inland water frequently occurs during harmful algal blooms (HABs), rendering it challenging to comprehend the spatiotemporal features of dynamics. Recently, remote sensing has been applied effectively detect behaviors in expensive bodies. However, image sensor resolution limitation can render understanding relatively small bodies challenging. In addition, few studies have improved images invest...

در پژوهش حاضر، صفات تشریحی و ریزریخت‌شناسی برگ و دمبرگ 5 گونه از جنسGeum L. متعلق به دو زیر‌جنس Orthostulus و Geum با میکروسکوپ نوری (LM) و الکترونی (SEM) بررسی شد. برای مطالعة تشریحی، نخست برش‌های عرضی برگ و دمبرگ تهیه شد؛ سپس بهترین برش‌ها برای رنگ‌آمیزی انتخاب شد و از آن‌ها عکس‌برداری به عمل آمد. برای مطالعة ریزریخت‌شناسی، قطعات برگ و دمبرگ شستشو داده شدند و پس از خشک‌شدن، برای تصویر‌برداری ...

Journal: :Ecosphere 2023

Climate change is increasing temperature, decreasing precipitation, and atmospheric CO2 concentrations in many ecosystems. As carbon rises, plants may increase carbon-based defenses, such as phenolics, thereby potentially affecting food quality, foraging habits, habitat suitability for mammalian herbivores. In alpine habitats, the American pika (Ochotona princeps) a model species studying effec...

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