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Table 2 Common metrics for (A) ecological coral outcomes and (B) physical outcomes associated with built structures

From: Evidence on the ecological and physical effects of built structures in shallow, tropical coral reefs: a systematic map

Category

Subcategory

Metric

A) Ecological

Coral mortality

Percent mortality (or survival)

  

Larval mortality (or survival)

  

Transplant mortality (or survival)

  

Percent detached

  

Cause of death

  

Mortality count (or survival)

 

Coral growth

Growth rate (height, width, diameter)

  

Coral size (height, width, length, diameter, volume, weight)

  

Fragment size (height, width, length, diameter)

  

Colony size (heigh, width, length, diameter)

  

linear extension

 

Coral cover

Coral cover

  

Percent cover

 

Coral recruitment

Number of settlers or recruits

  

Settlement behavior

  

Recruitment density

  

Recruitment percent

 

Coral diversity

Species diversity

  

Species evenness

  

Species richness

  

Community composition

 

Coral condition

Bleaching proportion

  

Bleaching frequency

  

Bleaching severity

  

Coral condition

  

Percent corals per health category

  

Tissue stress proportion

 

Reef structure

Structural complexity

  

Reef height

  

Reef size

 

Coral distribution

Spatial distribution

 

Coral species or population

Abundance

  

Density

  

Number of functional groups

 

Coral biological interactions

Interactions with reef fish

  

Interactions with macroalgae

  

Interactions with macroinvertebrates

 

Coral reproduction

Number of gonads

  

Number of settlers or recruits

  

Size threshold of fecund corals

 

Coral genetic

Genetic diversity

  

Genetic abundance

  

Genetic richness

  

Gene expression

B) Physical

Waves

Wave attenuation

  

Wave energy

  

Wave height

 

Sediment and morphology

Shoreline morphology

  

Elevation change

  

Sedimentation rate

 

Currents

Current speed

  

Current magnitude