**Appendix 2. Description of the variables collected in the analysis matrix for further analysis**

were supported by the NSF Idaho EPSCoR Program and by the National Science Foundation under award number IIA-1301792. JPJ was supported by Texas State University's Research

**Appendix 1. Keywords used in the review based on the goal of the study, location and the level of assessment. Searcher = Web of**

**Appendix 2. Description of the variables collected in the analysis**

*Economics* Binary 1 = If it belongs to economics; 0 = If it does not belong to

*Sociocultural sciences* Binary 1 = If it belongs to *Sociocultural*; 0 = If it does not belong

Interdisciplinary group Binary 1 = If it belongs to an interdisciplinary group; 0 = If it

Social-ecological system (SES) framework Binary 1 = If it uses the SES framework; 0 = If it does use the

*Natural sciences* Binary 1 = If it belongs to *Natural sciences*; 0 = If it does not

econom*ics*

Qualitative Academia versus government versus private

belong to *Natural sciences*

does not belong to an interdisciplinary group

to *Sociocultural field*

SES framework

Goal: ecosystem services "ecosystem serv\*" or "environmental servic\*" or "ecological services"

Enhancement Program.

92 Ecosystem Services and Global Ecology

**matrix for further analysis**

**Related with the type of article**

vs. government vs. private)

First author occupation (e.g., academia

Field of expertise of the first author

**Category Keywords** Localization "US" or

> "USA" or "Unites States" or

Level of assessment "Watershed" or "basin "or "catchment"

**Variables Type Description**

Year of the publication Continuous Year of publication Journal Qualitative Name of the Journal

Field of expertise Qualitative Area(s) where the paper is classified

"United states of America"

Number of authors Ordinal Number of authors in the paper

**Science**

Ecosystem services (CICES ES-classes) ES classification used (MEA, TEEB,

IPBES, CICES)

PROVISIONING

Regulating

*Filtration, sequestration, storage,*

*Filtration, sequestration, storage, accumulation by ecosystems*

*accumulation by biota*

*Market valuation* Binary 1 = If the study uses market techniques; 0 = If the study

*Revealed preferences* Binary 1 = If the study uses revealed preference techniques,

*Stated preferences* Binary 1 = If the study uses stated preference techniques,

*Biophysical quantification* Binary 1 = If the study uses a biophysical model to quantify

Number of ES Continuous Number of ecosystem services valued by the study.

*Biomass from animals or plants* Binary 1 = If the study values food, 0 = If the study does not

*Ground Water for drinking* Binary 1 = If the study values *Ground Water*, 0 = If the study

*Surface Water for drinking* Binary 1 = If the study values *Surface Water*, 0 = If the study does

*Water for non drinking purposes* Binary 1 = If the study values *Water for non drinking purposes*,

*Raw material* Binary 1 = If the study values *Raw material*, 0 = If the study does

*Mechanical energy* Binary 1 = If the study values *Mechanical energy*, 0 = If the study

*Biomass-based energy sources* Binary 1 = If the study values *Biomass based energy sources*, 0 = If

*Natural medicines* Binary 1 = If the study values *Natural medicines*, 0 = If the study

*Genetic pool* Binary 1 = If the study values *Genetic pool*, 0 = If the study does

*Bio-remediation by biota* Binary 1 = If the study values *Bio-remediation by biota*, 0 = If the

*Bio-remediation by ecosystems* Binary 1 = If the study values *Bio-remediation by ecosystems,* 0 = If

*ecosystems*

value food

*purposes*

does not use market techniques.

Ecosystem Services across US Watersheds: A Meta-Analysis of Studies 2000–2014

model to quantify the delivery

Qualitative Name of the classification used in the paper

does not value *Ground Water*

not value *Surface Water*

not value *Raw material*

not value *Genetic pool*

does not value *Mechanical energy*

does not value *Natural medicines*

0 = any study uses revealed preference techniques.

http://dx.doi.org/10.5772/intechopen.76650

95

0 = any study using stated preference techniques.

the delivery, 0 = If the study does not use a biophysical

0 = If the study does not value *Water for non drinking*

the study does not value *Biomass based energy sources*

study does not value *Bio-remediation by biota*

*accumulation by biota*, 0 = If the study does not value *Filtration, sequestration, storage, accumulation by biota*

the study does not value *Bio-remediation by ecosystems*

*accumulation by ecosystems*, 0 = If the study does not value *Filtration, sequestration, storage, accumulation by*

Binary 1 = If the study values *Filtration, sequestration, storage,*

Binary 1 = If the study values *Filtration, sequestration, storage,*

Level of protection

94 Ecosystem Services and Global Ecology

**Related with valuation methods**

Dimension of assessment

*economic)*

Methods used

*Mapping values (both biophysical, social, or*

Flooded grassland Binary 1 = If the study focuses on flooded grassland, 0 = If the

*Mediterranean Shrubs* Binary 1 = If the study focuses on Mediterranean Shrubs, 0 = If

*Temperate Broadleaf forest* Binary 1 = If the study focuses on *Temperate Broadleaf forest*, 0 = If

*Temperate coniferous forest* Binary 1 = If the study focuses on Temperate coniferous forest,

Temperate grassland Binary 1 = If the study focuses on Temperate grassland, 0 = If

Tropical Coniferous forest Binary 1 = If the study focuses on Tropical Coniferous forest,

Protected Binary 1 = If the study area is protected, 0 = If the study is not

Federal level of protection Binary 1 = If there is a federal protection, 0 = If there is not a

Sate level of protection Binary 1 = If there is a state protection, 0 = If there is not a state

Local level of protection Binary 1 = If there is a local protection, 0 = If there is not a local

Valuation arguments Qualitative Arguments of the authors to perform the assessment.

*Biophysical technique* Binary 1 = If the study uses a biophysical technique, 0 = If the

*Biophysical indicator* Binary 1 = If the study uses a biophysical indicator, 0 = If the

*Sociocultural technique* Binary 1 = If the study uses a sociocultural technique, 0 = If the

*Sociocultural indicator* Binary 1 = If the study uses a sociocultural indicator, 0 = If the

Monetary or economic technique Binary 1 = If the study uses a economic technique, 0 = If the

Monetary or economic indicator Binary 1 = If the study uses a economic indicator, 0 = If the

forest

forest

protected

protection

protection

federal protection

Binary 1 = If it maps values; 0 = If it does not map values

study does not use a biophysical technique

study does not make a biophysical indicator

study does not uses a sociocultural technique

study does not uses a sociocultural indicator

study does not uses a economic technique

study does not uses a economic indicator

study does not focus on flooded grassland

the study does not focus on Mediterranean Shrubs

the study does not focus on Temperate Broadleaf forest

0 = If the study does not focus on Temperate coniferous

the study does not focus on Temperate grassland

0 = If the study does not focus on Tropical Coniferous

**Type of biophysical quantification**

**Types of value** Use value

Non-use value

**Types of stakeholder group**

Several categories of services Binary 1 = uses several categories of ecosystem services, 0 = use

Mapping delivery Binary 1 = If the study map the delivery, 0 = If the study does

Use of proxy to quantify ES Binary 1 = If the study uses a proxy, 0 = If the study does not

Trade-0ffs analysis Binary 1 = If the study estimates Trade-offs analysis, 0 = If the

Multiple ecosystem services Binary 1 = If the study estimates multiples services, 0 = If the

*Direct* Binary 1 = If the study assesses direct use value 0 = If the study

*Indirect* Binary 1 = If the study assesses indirect use value 0 = If the

*Option value* Binary 1 = If the study assesses *Option value* 0 = If the study

*Existence value* Binary 1 = If the study assesses *Existence value* 0 = If the study

*Bequest value* Binary 1 = If the study assesses *Bequest value* 0 = If the study

Beneficiaries involved Binary 1 = If the study involves beneficiaries; 0 = If the study

*Locals* Binary 1 = If the study involves locals; 0 = If the study does not

*Professionals or experts* Binary 1 = If the study involves professionals; 0 = If the study

*Tourists* Binary 1 = If the study involves tourist; 0 = If the study does not

*Mixed* Binary 1 = If the study involves mixed stakeholders; 0 = If the

Impact on beneficiaries Binary 1 = If the study involves impact on beneficiaries; 0 = If

Type of beneficiaries Qualitative Description the types of beneficiaries

Biophysical units used Qualitative Description of the unit used

Biophysical model used Qualitative Name of the model

not map the delivery

use a proxy

a single category of services ecosystem services

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97

Ecosystem Services across US Watersheds: A Meta-Analysis of Studies 2000–2014

study does not estimate Trade-offs analysis

study does not estimate multiples services

does not direct use value.

does not value *Option value*

does not *Existence value*

does not *Bequest value*

involve locals

involve tourists

study does not indirect use value.

does not involve the beneficiaries.

does not involve professionals

study does not involve mixed stakeholders

the study involves no impact on beneficiaries.

*Hydrological cycle and water flow*

96 Ecosystem Services and Global Ecology

*Atmospheric composition and climate*

*Physical and experiential use of plants,*

*regulation*

Cultural

*animals, or landscapes*

*maintenance*

*Control of erosion* Binary 1 = If the study values *Control of erosion*, 0 = If the study

*Buffering and attenuation of mass flow* Binary 1 = If the study values *Buffering and attenuation of mass*

*Storm protection* Binary 1 = If the study values *Storm protection*, 0 = If the study

*Pollination and seed dispersal* Binary 1 = If the study values *Pollination*, 0 = If the study does

*Maintaining populations and habitats* Binary 1 = If the study values *Habitat for species*, 0 = If the study

*Pest control* Binary 1 = If the study values *Pest control*, 0 = If the study does

*Disease control* Binary 1 = If the study values *Disease control*, 0 = If the study

*Decomposition and fixing soil processes* Binary 1 = If the study values *soil processes*, 0 = If the study does

*Chemical condition of freshwaters* Binary 1 = If the study values *Chemical condition of freshwaters*,

*Educational* 1 = If the study values *Educational*, 0 = If the study does

*Heritage, cultural* 1 = If the study values *Heritage, cultural*, 0 = If the study

*Entertainment or recreation* 1 = If the study values *Recreation*, 0 = If the study does

*Esthetic* 1 = If the study values *Esthetic*, 0 = If the study does not

*Scientific* Binary 1 = If the study values *Scientific*, 0 = If the study does not

*Bequest value* Binary 1 = If the study values *Bequest value*, 0 = If the study does

*Existence value* Binary 1 = If the study values *Existence value*, 0 = If the study

*Flood protection* Binary 1 = If the study values *Flood protection*

*mass flow*

does not value *Control of erosion*

does not value *Storm protection*

does not value *Habitat for species*

does not value *Disease control*

not value *Pollination*

not value *Pest control*

not value *soil processes*

not value *Educational*

not value *Recreation*

value *Esthetic*

value *Scientific*

*freshwaters*

Binary 1 = If the study values *Hydrological cycle*, 0 = If the study does not value *Hydrological cycle*

, 0 = If the study does not value *Flood protection*

0 = If the study does not value *Chemical condition of*

Binary 1 = If the study values *climate regulation*, 0 = If the study does not value *climate regulation*

Binary 1 = If the study values *experiential use*, 0 = If the study does not value *experiential use*

does not value *Heritage, cultural*

does not value *Existence value*

not value *Bequest value*

*flow,* 0 = If the study does not *Buffering and attenuation of*