microplasticity
Plasticity observed at fine spatial scales within environments
microplastics
Plastic particles smaller than 5 mm that result from fragmentation of larger plastic pieces
microtopography
Topographic variation on the order of submeters to several meters which can be characterized mainly through airborne light detection and ranging data
microvertebrate assemblage
Collection of small vertebrate fossils recovered from sedimentary deposits
microvirus diversity
The variety and distribution of small circular single-stranded DNA viruses that infect bacteria
midday depression
midden
Large piles of cones at the base of trees where squirrels stockpile cones, which are defended as territories and serve as cache for winter survival
migration initiation date
military landscapes
Specialized landscapes of military training and mountain battle-zones that exist as both material concept and memories for navigation of physical and social landscapes
mine disturbance
mine tailings
Pulverized waste rock not containing useful ore, typically deposited as slurry or fine dust, often containing toxic metals and chemicals
mineral zoning
The spatial distribution of different mineral assemblages around a hydrothermal center
mineral-organic associations
Associations between organic compounds and reactive minerals that can effectively protect organic compounds from microbial access and represent an important C storage mechanism in upland soil systems
minimally guided instructional strategies
mining
misdirected parental care hypothesis
Individuals kill unrelated young to avoid wasting energy on parental care that does not benefit their own offspring
mixed-modern water
mixing height
mixing model prediction bias
mixing sub-space
model complexity trade-offs
The balance between including biological detail to improve accuracy versus introducing parameter uncertainty that can reduce forecast skill
model equifinality
model evaluation/performance
model resolution
model validation
Process of comparing model predictions with observed data to assess model performance
modern residence times
modularity
molecular weight
molybdenum
molybdenum mineralization
monomethylmercury
moraine exposure age
moral burden
The ethical responsibilities that supervisors carry when sending workers into the field, including duties of promoting safety, ensuring equitable access, and continuing to learn and improve
morphological complexity
Complex flower morphologies with hooded flowers and long nectar spurs that may influence microbial signal transmission and pollinator behavior
morphological constraint
Physical limitations imposed by body structure that affect foraging efficiency and resource use
morphological differentiation
Differences in physical characteristics, particularly head capsule size, between coexisting species
morphological integration
morphological intermediate
Individuals bearing characteristics from both parent species indicating potential hybrid status
mosaic genome evolution
Different evolutionary rates and histories in different parts of the genome
moss prevalence
Ratio of moss cover to vascular plant cover, used to assess relative moss dominance
mother-knows-best hypothesis
The hypothesis that parent-offspring conflicts can arise when host plants that maximize larval performance differ from plants that increase adult longevity and egg production
mother-knows-best hypothesis
mound construction
Building of elevated nest structures from organic materials, excavated soil, and debris by social insects
mountain pass formation
Creation of low elevation corridors through mountain ridges by water erosion
mountain passes are higher in the tropics
multi-layer cloud systems
multilevel selection
Theoretical framework positing natural selection simultaneously occurs at multiple levels of biological organization, and at levels other than only the gene
multiple hierarchy stratification theory
A theoretical view operating on the premise that each person has a specific status or position within society, with different levels of socioeconomic status having different challenges with leisure co...
multiscale spatial representation
Hierarchical spatial relationships to represent data across scales from molecular to regional
natal habitat effects
The influence of early life environment on later life history decisions
