diff --git a/R/data_algae.R b/R/data_algae.R
index 432caaa..46dec6f 100644
--- a/R/data_algae.R
+++ b/R/data_algae.R
@@ -31,9 +31,9 @@
 #' - `samplingProtocolVersion`: The NEON document number and version where detailed information regarding the sampling method used is available; format NEON.DOC.######vX.
 #' - `substratumSizeClass`: Size class of the substratum sampled.
 #' - `samplerType`: Type of sampler used to collect the sample.
-#' - `phytoDepth1`: First phytoplankton sample depth at sampling location
-#' - `phytoDepth2`: Second phytoplankton sample depth at sampling location
-#' - `phytoDepth3`: Third phytoplankton sample depth at sampling location
+#' - `phytoDepth1`: First phytoplankton sample depth (meter) at sampling location
+#' - `phytoDepth2`: Second phytoplankton sample depth (meter) at sampling location
+#' - `phytoDepth3`: Third phytoplankton sample depth (meter) at sampling location
 #' - `latitude`: The geographic latitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 #' - `longitude`: The geographic longitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 #' - `elevation`: Elevation (in meters) above sea level.
diff --git a/R/data_fish.R b/R/data_fish.R
index 4c1ed96..a1e84b3 100644
--- a/R/data_fish.R
+++ b/R/data_fish.R
@@ -11,6 +11,7 @@
 #' - `location_id`: Location id.
 #' - `siteID`: NEON site code.
 #' - `plotID`: Plot identifier (NEON site code_XXX).
+#' - `pointID`: Sampling point identifier.
 #' - `unique_sample_id`: Identity of unique samples, usually it has location and date information.
 #' - `observation_datetime`: Observation date and time.
 #' - `taxon_id`: Accepted species code, based on one or more sources.
diff --git a/R/data_macroinvertebrate.R b/R/data_macroinvertebrate.R
index 71a8261..46bcd96 100644
--- a/R/data_macroinvertebrate.R
+++ b/R/data_macroinvertebrate.R
@@ -25,9 +25,9 @@
 #' - `substratumSizeClass`: Size class of the substratum sampled.
 #' - `neon_sample_id`: NEON sample ID.
 #' - `remarks`: Remarks of record.
-#' - `ponarDepth`: Depth of petite ponar sample.
-#' - `snagLength`: Length of snag sampled.
-#' - `snagDiameter`: Diameter of snag sampled.
+#' - `ponarDepth`: Depth (meter) of petite ponar sample.
+#' - `snagLength`: Length (centimeter) of snag sampled.
+#' - `snagDiameter`: Diameter (centimeter) of snag sampled.
 #' - `latitude`: The geographic latitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 #' - `longitude`: The geographic longitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 #' - `elevation`: Elevation (in meters) above sea level.
diff --git a/R/data_zooplankton.R b/R/data_zooplankton.R
index 0c5e63e..87a525a 100644
--- a/R/data_zooplankton.R
+++ b/R/data_zooplankton.R
@@ -23,7 +23,7 @@
 #' - `unit`: Unit of the values in the `value` column.
 #' - `release`: Version of data release by NEON.
 #' - `samplerType`:	Type of sampler used to collect the sample.
-#' - `towsTrapsVolumn`: Sample volume collected for zooplankton.
+#' - `towsTrapsVolumn`: Sample volume (liter) collected for zooplankton.
 #' - `latitude`: The geographic latitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 #' - `longitude`: The geographic longitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 #' - `elevation`: Elevation (in meters) above sea level.
diff --git a/R/neon_sites.R b/R/neon_sites.R
index 85f4b17..1ce1096 100644
--- a/R/neon_sites.R
+++ b/R/neon_sites.R
@@ -9,10 +9,10 @@
 #' - `Domain Name`: Full domain name.
 #' - `domainID`: Unique identifier of the NEON domain.
 #' - `State`: The state name of the site locates in.
-#' - `Latitude`: Latitide of the site.
-#' - `Longitude`: Longitude of the site.
+#' - `Latitude`: Latitide of the site  (in decimal degrees, WGS84).
+#' - `Longitude`: Longitude of the site (in decimal degrees, WGS84).
 #' - `Site Type`: The type of the site (e.g. Core Terrestrial).
-#' - `Site Subtype`: Second level site type.
-#' - `Site Host`: Host of the site.
+#' - `Site Subtype`: Second level site type, for aquatic sites only (e.g. Lake, Wadeable Stream, Non-wadeable Rive).
+#' - `Site Host`: Host organization of the site.
 #'
 "neon_sites"
diff --git a/docs/pkgdown.yml b/docs/pkgdown.yml
index 45c2ca9..6b18243 100644
--- a/docs/pkgdown.yml
+++ b/docs/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 2.11.4
 pkgdown: 1.6.1
 pkgdown_sha: ~
 articles: {}
-last_built: 2021-03-29T19:05Z
+last_built: 2021-03-30T03:47Z
 
diff --git a/docs/reference/data_algae.html b/docs/reference/data_algae.html
index 3bf769e..3ecde72 100644
--- a/docs/reference/data_algae.html
+++ b/docs/reference/data_algae.html
@@ -138,9 +138,9 @@ <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h
 <li><p><code>samplingProtocolVersion</code>: The NEON document number and version where detailed information regarding the sampling method used is available; format NEON.DOC.######vX.</p></li>
 <li><p><code>substratumSizeClass</code>: Size class of the substratum sampled.</p></li>
 <li><p><code>samplerType</code>: Type of sampler used to collect the sample.</p></li>
-<li><p><code>phytoDepth1</code>: First phytoplankton sample depth at sampling location</p></li>
-<li><p><code>phytoDepth2</code>: Second phytoplankton sample depth at sampling location</p></li>
-<li><p><code>phytoDepth3</code>: Third phytoplankton sample depth at sampling location</p></li>
+<li><p><code>phytoDepth1</code>: First phytoplankton sample depth (meter) at sampling location</p></li>
+<li><p><code>phytoDepth2</code>: Second phytoplankton sample depth (meter) at sampling location</p></li>
+<li><p><code>phytoDepth3</code>: Third phytoplankton sample depth (meter) at sampling location</p></li>
 <li><p><code>latitude</code>: The geographic latitude (in decimal degrees, WGS84) of the geographic center of the reference area.</p></li>
 <li><p><code>longitude</code>: The geographic longitude (in decimal degrees, WGS84) of the geographic center of the reference area.</p></li>
 <li><p><code>elevation</code>: Elevation (in meters) above sea level.</p></li>
diff --git a/docs/reference/data_fish.html b/docs/reference/data_fish.html
index 89f58e2..eddab02 100644
--- a/docs/reference/data_fish.html
+++ b/docs/reference/data_fish.html
@@ -125,6 +125,7 @@ <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h
 <li><p><code>location_id</code>: Location id.</p></li>
 <li><p><code>siteID</code>: NEON site code.</p></li>
 <li><p><code>plotID</code>: Plot identifier (NEON site code_XXX).</p></li>
+<li><p><code>pointID</code>: Sampling point identifier.</p></li>
 <li><p><code>unique_sample_id</code>: Identity of unique samples, usually it has location and date information.</p></li>
 <li><p><code>observation_datetime</code>: Observation date and time.</p></li>
 <li><p><code>taxon_id</code>: Accepted species code, based on one or more sources.</p></li>
diff --git a/docs/reference/data_macroinvertebrate.html b/docs/reference/data_macroinvertebrate.html
index 82adcf1..cb109ec 100644
--- a/docs/reference/data_macroinvertebrate.html
+++ b/docs/reference/data_macroinvertebrate.html
@@ -138,9 +138,9 @@ <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h
 <li><p><code>substratumSizeClass</code>: Size class of the substratum sampled.</p></li>
 <li><p><code>neon_sample_id</code>: NEON sample ID.</p></li>
 <li><p><code>remarks</code>: Remarks of record.</p></li>
-<li><p><code>ponarDepth</code>: Depth of petite ponar sample.</p></li>
-<li><p><code>snagLength</code>: Length of snag sampled.</p></li>
-<li><p><code>snagDiameter</code>: Diameter of snag sampled.</p></li>
+<li><p><code>ponarDepth</code>: Depth (meter) of petite ponar sample.</p></li>
+<li><p><code>snagLength</code>: Length (centimeter) of snag sampled.</p></li>
+<li><p><code>snagDiameter</code>: Diameter (centimeter) of snag sampled.</p></li>
 <li><p><code>latitude</code>: The geographic latitude (in decimal degrees, WGS84) of the geographic center of the reference area.</p></li>
 <li><p><code>longitude</code>: The geographic longitude (in decimal degrees, WGS84) of the geographic center of the reference area.</p></li>
 <li><p><code>elevation</code>: Elevation (in meters) above sea level.</p></li>
diff --git a/docs/reference/data_zooplankton.html b/docs/reference/data_zooplankton.html
index e4dccc0..f7b8270 100644
--- a/docs/reference/data_zooplankton.html
+++ b/docs/reference/data_zooplankton.html
@@ -131,7 +131,7 @@ <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h
 <li><p><code>unit</code>: Unit of the values in the <code>value</code> column.</p></li>
 <li><p><code>release</code>: Version of data release by NEON.</p></li>
 <li><p><code>samplerType</code>:	Type of sampler used to collect the sample.</p></li>
-<li><p><code>towsTrapsVolumn</code>: Sample volume collected for zooplankton.</p></li>
+<li><p><code>towsTrapsVolumn</code>: Sample volume (liter) collected for zooplankton.</p></li>
 <li><p><code>latitude</code>: The geographic latitude (in decimal degrees, WGS84) of the geographic center of the reference area.</p></li>
 <li><p><code>longitude</code>: The geographic longitude (in decimal degrees, WGS84) of the geographic center of the reference area.</p></li>
 <li><p><code>elevation</code>: Elevation (in meters) above sea level.</p></li>
diff --git a/docs/reference/neon_sites.html b/docs/reference/neon_sites.html
index 282b0cd..adc8dc6 100644
--- a/docs/reference/neon_sites.html
+++ b/docs/reference/neon_sites.html
@@ -123,11 +123,11 @@ <h2 class="hasAnchor" id="format"><a class="anchor" href="#format"></a>Format</h
 <li><p><code>Domain Name</code>: Full domain name.</p></li>
 <li><p><code>domainID</code>: Unique identifier of the NEON domain.</p></li>
 <li><p><code>State</code>: The state name of the site locates in.</p></li>
-<li><p><code>Latitude</code>: Latitide of the site.</p></li>
-<li><p><code>Longitude</code>: Longitude of the site.</p></li>
+<li><p><code>Latitude</code>: Latitide of the site  (in decimal degrees, WGS84).</p></li>
+<li><p><code>Longitude</code>: Longitude of the site (in decimal degrees, WGS84).</p></li>
 <li><p><code>Site Type</code>: The type of the site (e.g. Core Terrestrial).</p></li>
-<li><p><code>Site Subtype</code>: Second level site type.</p></li>
-<li><p><code>Site Host</code>: Host of the site.</p></li>
+<li><p><code>Site Subtype</code>: Second level site type, for aquatic sites only (e.g. Lake, Wadeable Stream, Non-wadeable Rive).</p></li>
+<li><p><code>Site Host</code>: Host organization of the site.</p></li>
 </ul>
 
 
diff --git a/man/data_algae.Rd b/man/data_algae.Rd
index f79d055..8d58476 100644
--- a/man/data_algae.Rd
+++ b/man/data_algae.Rd
@@ -27,9 +27,9 @@ of the lowest level taxonomic rank that can be determined.
 \item \code{samplingProtocolVersion}: The NEON document number and version where detailed information regarding the sampling method used is available; format NEON.DOC.######vX.
 \item \code{substratumSizeClass}: Size class of the substratum sampled.
 \item \code{samplerType}: Type of sampler used to collect the sample.
-\item \code{phytoDepth1}: First phytoplankton sample depth at sampling location
-\item \code{phytoDepth2}: Second phytoplankton sample depth at sampling location
-\item \code{phytoDepth3}: Third phytoplankton sample depth at sampling location
+\item \code{phytoDepth1}: First phytoplankton sample depth (meter) at sampling location
+\item \code{phytoDepth2}: Second phytoplankton sample depth (meter) at sampling location
+\item \code{phytoDepth3}: Third phytoplankton sample depth (meter) at sampling location
 \item \code{latitude}: The geographic latitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 \item \code{longitude}: The geographic longitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 \item \code{elevation}: Elevation (in meters) above sea level.
diff --git a/man/data_fish.Rd b/man/data_fish.Rd
index 291e176..1b62af1 100644
--- a/man/data_fish.Rd
+++ b/man/data_fish.Rd
@@ -10,6 +10,7 @@ A data frame (also a tibble) with the following columns:
 \item \code{location_id}: Location id.
 \item \code{siteID}: NEON site code.
 \item \code{plotID}: Plot identifier (NEON site code_XXX).
+\item \code{pointID}: Sampling point identifier.
 \item \code{unique_sample_id}: Identity of unique samples, usually it has location and date information.
 \item \code{observation_datetime}: Observation date and time.
 \item \code{taxon_id}: Accepted species code, based on one or more sources.
diff --git a/man/data_macroinvertebrate.Rd b/man/data_macroinvertebrate.Rd
index 946f2d0..f0e9d1a 100644
--- a/man/data_macroinvertebrate.Rd
+++ b/man/data_macroinvertebrate.Rd
@@ -27,9 +27,9 @@ of the lowest level taxonomic rank that can be determined.
 \item \code{substratumSizeClass}: Size class of the substratum sampled.
 \item \code{neon_sample_id}: NEON sample ID.
 \item \code{remarks}: Remarks of record.
-\item \code{ponarDepth}: Depth of petite ponar sample.
-\item \code{snagLength}: Length of snag sampled.
-\item \code{snagDiameter}: Diameter of snag sampled.
+\item \code{ponarDepth}: Depth (meter) of petite ponar sample.
+\item \code{snagLength}: Length (centimeter) of snag sampled.
+\item \code{snagDiameter}: Diameter (centimeter) of snag sampled.
 \item \code{latitude}: The geographic latitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 \item \code{longitude}: The geographic longitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 \item \code{elevation}: Elevation (in meters) above sea level.
diff --git a/man/data_zooplankton.Rd b/man/data_zooplankton.Rd
index cd4fa7a..c2d3237 100644
--- a/man/data_zooplankton.Rd
+++ b/man/data_zooplankton.Rd
@@ -20,7 +20,7 @@ of the lowest level taxonomic rank that can be determined.
 \item \code{unit}: Unit of the values in the \code{value} column.
 \item \code{release}: Version of data release by NEON.
 \item \code{samplerType}:	Type of sampler used to collect the sample.
-\item \code{towsTrapsVolumn}: Sample volume collected for zooplankton.
+\item \code{towsTrapsVolumn}: Sample volume (liter) collected for zooplankton.
 \item \code{latitude}: The geographic latitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 \item \code{longitude}: The geographic longitude (in decimal degrees, WGS84) of the geographic center of the reference area.
 \item \code{elevation}: Elevation (in meters) above sea level.
diff --git a/man/neon_sites.Rd b/man/neon_sites.Rd
index 8d7ded6..2384664 100644
--- a/man/neon_sites.Rd
+++ b/man/neon_sites.Rd
@@ -12,11 +12,11 @@ A data frame with the following columns:
 \item \verb{Domain Name}: Full domain name.
 \item \code{domainID}: Unique identifier of the NEON domain.
 \item \code{State}: The state name of the site locates in.
-\item \code{Latitude}: Latitide of the site.
-\item \code{Longitude}: Longitude of the site.
+\item \code{Latitude}: Latitide of the site  (in decimal degrees, WGS84).
+\item \code{Longitude}: Longitude of the site (in decimal degrees, WGS84).
 \item \verb{Site Type}: The type of the site (e.g. Core Terrestrial).
-\item \verb{Site Subtype}: Second level site type.
-\item \verb{Site Host}: Host of the site.
+\item \verb{Site Subtype}: Second level site type, for aquatic sites only (e.g. Lake, Wadeable Stream, Non-wadeable Rive).
+\item \verb{Site Host}: Host organization of the site.
 }
 }
 \usage{