macronutrient imbalance
Imbalance between carbohydrates and protein availability that affects ant behavior and foraging strategies
magnetic fabrics
magnetic hysteresis
The relationship between applied magnetic field and induced magnetization that reveals magnetic mineralogy and domain states
magnified intersection method
Standardized technique for quantifying fungal colonization by scoring presence of fungal structures at random root intersections under magnification
magnitude
main effects hypothesis
Hypothesis that social relationships provide direct emotional and behavioral aid that encourages healthy lifestyle changes
maintenance of diversity
maladaptive host choice
Selection of host plants that reduce offspring fitness or survival
maladaptive preference
male desertion
Males leaving the brood first, leaving their mates as sole caretakers of the larvae
male emergence timing
The timing of male bee emergence relative to females, used as an indicator of social breeding strategy and brood structure.
manganese cycling
The oxidation and reduction reactions of manganese in aquatic sediments, influenced by oxygen availability and organic carbon supply
marginal value theorem
marianismo
marijuana-related hospital discharges
masculinity performance
The concept that masculinity is performed and constructed rather than innate, revealed through character staging and cultural fabrication
mass balance equations
Mathematical descriptions that provide a palette for visualizing and quantifying emergent dynamics of systems
mass conservation
The principle that mass cannot be created or destroyed, applied to nutrient cycling as consumption - growth - egestion = excretion
mass conservation
Physical principle balancing soil transport and production processes to predict soil thickness evolution
mass-specific processing
Detritus processing rate standardized by invertebrate biomass
masting
Synchronized, massive flowering event that occurs infrequently in monocarpic species
matched pair design
Research design comparing outcomes between treated subjects and demographically similar untreated controls
maternal effects
Influence of maternal identity on offspring growth through burrow location, maternal investment, and genetics
maternal stress effects
Impact of maternal stress levels on offspring survival and development, potentially with intergenerational effects
matriline
Social group consisting of one to five closely-related females (yearlings and young) in yellow-bellied marmots
matrix effects
Interference in analytical measurements caused by dissolved organic matter and salts that suppress or intensify the response signal
maturity index
Body mass at specified age divided by adult body mass
maximum differential reflectivity (sZDRmax)
maximum entropy theory
A theoretical framework that derives universal SAR formulae from information theory principles
maximum thickness
mean fire interval
mean sensitivity
A measure of high-frequency variation in tree-ring series that indicates climate responsiveness
mean slope
melodramatic mode
A mode of filmmaking that uses setting to externalize the inner states of characters, focusing on psychological realism and emotional expression
melt timing
memorability
mentorship quality
Student perceptions of the quality of relationships and support received from research mentors
metabolic complementarity
Ability of symbiotic microorganisms to metabolize compounds that are toxic or indigestible to their hosts
metabolic depression
Reduction in metabolic rate that can be active or passive
metabolic flight capacity
Peak metabolic rate and total energy expenditure during forced flight as measures of dispersal ability
metabolic rate
Rate of energy expenditure or metabolic activity in plant species
metadata
metal speciation
Identification and quantification of different chemical forms and binding environments of metals in environmental samples
metamorphosis
methyl-coenzyme M reductase
Key enzyme complex involved in methane metabolism in archaea
microbial communities
Soil microorganisms that consume nitrogen when carbon is added, affecting plant nutrient availability
microbial efficiency matrix stabilization
Framework suggesting that more labile plant material may be easier for soil microbes to assimilate and transform into microbial necromass, which can become more physically or chemically protected thro...
microclimate buffering
Protection of local environmental conditions from broader regional climate trends by fine-scale topographic features
microphone array
A multi-sensor system designed to spatially and synchronously sample the sound field
microphysical parameterization
Representation of cloud microphysical processes in atmospheric models that control precipitation initiation and rates of snowfall
