相关实验视频

Updated: Jun 29, 2026

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation
09:49

Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

Published on: November 18, 2015

两个蒙大拿河的hyporheic社区

J A Stanford, A R Gaufin

    Science (New York, N.Y.)
    |August 23, 1974
    PubMed
    概括

    溪流生物在地下息地壮成长,揭示了洪水平原石中的基于碎片的社区. 几种石物种在这些地下水生环境中完成了的发育.

    更多相关视频

    Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds12:50

    Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

    Published on: September 26, 2017

    Continuous Hydrologic and Water Quality Monitoring of Vernal Ponds06:37

    Continuous Hydrologic and Water Quality Monitoring of Vernal Ponds

    Published on: November 13, 2017

    相关概念视频

    Habitat Fragmentation02:31

    Habitat Fragmentation

    Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
    Hybrid Zones02:29

    Hybrid Zones

    Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.Gene flow and natural selection are evolutionary mechanisms that shape the outcome of a hybrid zone. Gene flow...
    Capillary Beds01:20

    Capillary Beds

    Capillary beds are networks of tiny blood vessels that play a crucial role in the circulatory system. These beds are where the exchange of gases, nutrients, and waste products occurs between the blood and surrounding tissues. Each capillary bed consists of numerous capillaries, which are the smallest blood vessels in the body, typically only one cell-thick. This thinness allows for the efficient diffusion of substances.
    Capillaries connect arterioles, small branches of arteries, to venules,...
    Microbial Mats01:25

    Microbial Mats

    Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...
    Acid Mine Drainage01:19

    Acid Mine Drainage

    Mining activities that disturb sulfide-rich rocks, particularly those containing pyrite (FeS₂), initiate a cascade of geochemical and microbiological processes with serious environmental implications. When exposed to air and water, pyrite undergoes oxidation, releasing sulfate, ultimately forming sulfuric acid and mobilizing heavy metals into surrounding water systems. This phenomenon, known as acid mine drainage (AMD), results in low pH waters laden with toxic elements that threaten aquatic...
    Hyperosmolar Hyperglycemic State01:21

    Hyperosmolar Hyperglycemic State

    Hyperosmolar Hyperglycemic State, or HHS, is a serious and life-threatening complication of type 2 diabetes mellitus. It is characterized by three main features: severe hyperglycemia, profound dehydration, and elevated serum osmolality, all occurring without significant ketoacidosis.HHS typically develops in older adults or individuals with limited access to fluids. This may result from illness, cognitive impairment, or medications such as diuretics or corticosteroids. These factors reduce...