Organize standards

_data/navigation.yml

@@ -1,6 +1,10 @@
 # Main navigation
 - text: "Standards"
-  href: /standards/
+  menu:
+  - text: "Maintained by TDWG"
+    href: /standards/
+  - text: "Externally maintained"
+    href: /standards/external/
 - text: "Journal"
   href: /journal/
 - text: "Community"

standards/abcd/index.md

@@ -1,7 +1,7 @@
 ---
 title: Access to Biological Collection Data (ABCD) Schema
 description: >
-  The Access to Biological Collections Data (ABCD) Schema is an evolving comprehensive standard for the access to and exchange of data about specimens and observations (a.k.a. primary biodiversity data).
+  The Access to Biological Collection Data (ABCD) Schema is an evolving comprehensive standard for the access to and exchange of data about specimens and observations (a.k.a. primary biodiversity data).
 background:
   img: https://c1.staticflickr.com/1/839/41611348922_d4030a5197_b.jpg
   by: "Natural History Museum: Coleoptera Section"

standards/external/index.md

@@ -0,0 +1,32 @@
+---
+title: Externally-maintained standards
+description: >
+  Some early TDWG standards are now maintained by other organizations. This page provides links to those standards.
+background:
+  img: https://images.unsplash.com/photo-1518709766631-a6a7f45921c3
+  by: sutirta budiman
+  href: https://unsplash.com/photos/PdiOj8kRy28
+toc: true
+---
+
+The standards listed on this page were ratified as TDWG standards prior to the adoption of the [current standards development process](/about/process/) in 2006. Although TDWG no longer has any role in maintaining them, TDWG still recommends their use, even though they may not qualify as Current Standards under the present-day documentation and maintenance criteria.
+
+## Authors of Plant Names
+
+[Authors of Plant Names](/standards/plant-names-authors/) is maintained as part of of the [International Plant Names Index (IPNI)](https://www.ipni.org/).
+
+## BPH and BPH/Supplementum
+
+[Botanico-Periodicum-Huntianum](/standards/bph/) and [Botanico-Periodicum-Huntianum/Supplementum](/standards/bph-supplementum/) are maintained by the [Hunt Institute for Botanical Documentation](https://www.huntbotanical.org/databases/show.php).
+
+## DELTA
+
+[DEscription Language for TAxonomy (DELTA)](/standards/delta/) is maintained by [its authors](https://www.delta-intkey.com/).
+
+## Index Herbariorum
+
+[Index Herbariorum. Part I: The Herbaria of the World](/standards/ih/) is maintained as an online version by the [New York Botanical Gardens](https://sweetgum.nybg.org/science/ih/).
+
+## TL-2
+
+[Taxonomic Literature, Edition 2 and its Supplements (TL-2)](/standards/tl-2/) is maintained as an online version by the [Smithsonian Institution](https://www.sil.si.edu/DigitalCollections/tl-2/index.cfm).

standards/index.md

@@ -1,38 +1,88 @@
 ---
-layout: list
-list: standards
 title: Standards
 description: >
   From [Darwin Core](/standards/dwc/) to [WGSRPD](/standards/wgsrpd/) TDWG standards aid the exchange of biodiversity information.
 background:
   img: https://images.unsplash.com/photo-1515474594679-6a13c25afb99
   by: Milos Prelevic
   href: https://unsplash.com/photos/shoal-of-fish-65busv7PmzM
-toc: false
-list:
-- href: /standards/abcd/
-- href: /standards/ac/
-- href: /standards/plant-names-authors/
-- href: /standards/bph/
-- href: /standards/bph-supplementum/
-- href: /standards/dwc/
-- href: /standards/delta/
-- href: /standards/economic-botany/
-- href: /standards/floristic-regions/
-- href: /standards/guid-as/
-- href: /standards/hispid3/
-- href: /standards/ih/
-- href: /standards/itf2/
-- href: /standards/plant-names/
-- href: /standards/poss/
-- href: /standards/sdd/
-- href: /standards/tcs/
-- href: /standards/tl-2/
-- href: /standards/tapir/
-- href: /standards/sds/
-- href: /standards/vms/
-- href: /standards/wgsrpd/
-- href: /standards/xdf/
+toc: true
 ---
 
 TDWG standards have a [status and category](/standards/status-and-categories/). Current standards and those under consideration as Draft standards are governed by the [TDWG Process](/about/process/), which includes the appointment of a [Review Manager](/about/review-managers/) to oversee expert and public review of TDWG standards. Our standards are also available as a collection on [FAIRsharing](https://fairsharing.org/collection/TDWGBiodiversity), which places them in context with databases that implement them and data policies that endorse their use.
+
+## Actively maintained
+
+### ABCD
+
+[Access to Biological Collection Data (ABCD) Schema](/standards/abcd/)
+
+### Audiovisual Core
+
+[Audiovisual Core Multimedia Resources Metadata Schema](/standards/ac/)
+
+### Darwin Core
+
+[Darwin Core](/standards/dwc/)
+
+### GUID Applicability Statements
+
+[GUID and Life Sciences Identifiers Applicability Statements](/standards/guid-as/)
+
+### SDS
+
+[TDWG Standards Documentation Standard (SDS)](/standards/sds/)
+
+### TAPIR
+
+[TDWG Access Protocol for Information Retrieval (TAPIR)](/standards/tapir/)
+
+### TCS
+
+[Taxon Concept Schema (TCS)](/standards/tcs/)
+
+### VMS
+
+[Vocabulary Maintenance Standard (VMS)](/standards/vms/)
+
+### WGSRPD
+
+[World Geographical Scheme for Recording Plant Distributions (WGSRPD)](/standards/wgsrpd/)
+
+## Not under active maintenance
+
+### Economic Botany
+
+[Economic Botany Data Collection Standard](/standards/economic-botany/)
+
+### Floristic Regions
+
+[Floristic Regions of the World](/standards/floristic-regions/)
+
+### HISPID3
+
+[Herbarium Information Standards and Protocols for Interchange of Data (HISPID3)](/standards/hispid3/)
+
+### ITF2
+
+[International Transfer Format for Botanic Garden Plant Records (ITF2)](/standards/itf2/)
+
+### Plant Names
+
+[Plant Names in Botanical Databases](/standards/plant-names/)
+
+### POSS
+
+[Plant Occurrence and Status Scheme (POSS)](/standards/poss/)
+
+### SDD
+
+[Structured Descriptive Data (SDD)](/standards/sdd/)
+
+### XDF
+
+[XDF - A Language for the Definition and Exchange of Biological Data Sets](/standards/xdf/)
+
+## Externally maintained
+
+[See this page](/standards/external/)