What you’ll learn in this article…
- BHL provides free access to over 64 million pages.
- MLIS graduates drive open science through digital curation and metadata work.
- BHL internships offer hands-on training in natural history collections.
Biodiversity Heritage Library: How MLIS Grads Can Drive Open Science
A practical guide to building a career in biodiversity digital libraries, open data curation, and science librarianship with your MLIS degree.
Over 64 million pages from 680+ institutions define the Biodiversity Heritage Library (BHL), now two decades into democratizing scientific knowledge, according to The Guardian.1 This open science infrastructure, spanning 12th-century manuscripts to Antarctic journals, requires MLIS professionals to steward digitization, metadata standards, and long-term preservation. As academic and museum budgets tighten, the labor of sustaining free access to scientific heritage increasingly falls on librarians who can navigate both taxonomic data and institutional collaboration. For students weighing master of library science pathways, BHL represents one of the most compelling destinations that MLIS training can open.
What Is the Biodiversity Heritage Library?
Twenty years after its founding, the Biodiversity Heritage Library stands as a landmark achievement in open-access digital librarianship, demonstrating how cross-institutional collaboration can democratize scientific knowledge. According to a recent report by Guardian coverage of the Biodiversity Heritage Library, the BHL has grown into a consortium of over 680 museums, universities, libraries, and scientific institutions, collectively digitizing more than 64 million pages of published biodiversity literature and making it freely available online.1 The collection spans journals, field diaries, illustrations, climate records, manuscripts, and other primary sources that were once locked away in physical archives.
A Consortium Built on Library Expertise
At its core, BHL's success depends on the same competencies taught in MLIS programs: metadata standards, digital preservation workflows, and cross-institutional collaboration. David Iggulden, chair of the BHL executive committee and head of data and digital, library and archives at Royal Botanic Gardens, Kew, describes the library as a dynamic resource for researchers confronting the climate and biodiversity crises. A 2025 report from Kew underscored digitization's role in environmental research, and BHL's curators work to ensure that historical records, from species distribution data to temperature logs, are properly described, linked, and preserved for long-term access. This requires expertise in controlled vocabularies, XML schemas, and archival management, all areas where MLIS alumni career paths have proven especially valuable.
Treasures That Span Centuries
The collection's depth is illustrated by items like the Circa instans, a medieval pharmacopeia dating from approximately 1190 and one of the oldest books in BHL. Digitized by the New York Botanical Garden in 2025, it offers a window into centuries of botanical and medical knowledge.1 Equally striking is Sir Joseph Hooker's illustrated Antarctic journal, featuring watercolor sketches from his 1841 expedition, and an 1892 illustrated exhibition catalogue by Henry Howell & Co., which captures the Victorian era's fusion of commerce and natural history. These artifacts show how BHL connects researchers and the public to primary sources that would otherwise be inaccessible, reinforcing the library's role as an essential open-science infrastructure.
Why BHL Matters for Open Science, and Why It Needs MLIS Professionals
The Biodiversity Heritage Library (BHL) is open science in action: a digital portal that gives anyone with an internet connection free, permanent access to original biodiversity literature, from 12th-century pharmacopeias to 19th-century Antarctic field journals. Before BHL, these materials sat in closed stacks, accessible only to those who could travel to a handful of institutions. Today, a researcher in Nairobi or a student in rural Brazil can examine the same primary sources as a senior fellow at Kew Gardens, leveling the playing field for ecological discovery and climate history research.
The Hidden Infrastructure of Open Access
Open doesn't mean maintenance-free. The 64 million pages in BHL require continuous, skilled labor to stay useful. Metadata must be created and standardized so that a search for "pollinator decline" actually surfaces relevant field notes, not just modern journal articles. Copyright reviews, licensing terms, and usage rights for each item, from out-of-print monographs to unpublished letters, need careful tracking. File formats age; TIFFs and JPEG2000s may need migration to avoid digital decay. BHL's application programming interface (API), which allows other platforms to integrate and remix its data, demands regular updates and documentation. All of these are core library and information science functions.
Free Access, Not Free Labor
Unlike commercial scholarly databases that charge subscription fees, sometimes tens of thousands of dollars per campus, BHL is entirely free to use. That admirable model, however, shifts the financial burden away from users and onto the contributing museums, libraries, and societies. There is no recurring revenue stream from access tolls. Instead, BHL relies on grants, institutional staff time, and in-kind contributions from over 680 partner organizations. This funding structure makes the work of trained MLIS professionals not a luxury but a necessity: without librarians and archivists who understand metadata schemas, digital preservation standards, and collection development policies, the library cannot sustain its growth or quality.
An Undiscovered Niche for MLIS Graduates
Despite its scale and importance, BHL rarely appears in career guidance for library science students. Traditional job pipelines point toward public libraries, school media centers, or academic liaison roles. The future of librarianship holds far more variety than those defaults suggest, and the open science infrastructure behind BHL, including similar initiatives like the Digital Public Library of America or Europeana, offers a distinct, rewarding career path that blends curation, technology, and public service. No major MLIS program guide currently bridges the gap between BHL's operational demands and the skills for future librarians that graduates bring. This silence leaves an entire generation of information professionals unaware that their niche training in digital librarianship, scientific metadata, and open access advocacy can directly power the world's largest biodiversity library.
Career Paths in Biodiversity and Science Librarianship
Many MLIS graduates picture their future in public or academic libraries, but a parallel track weaves through natural history museums, botanical gardens, and global digital consortiums, where professionals fuse library science with biodiversity data. This path demands dual literacy, understanding metadata standards and taxonomic databases, for instance, and opens roles that directly support open science. Those curious about the wider range of possibilities can explore library science careers that extend well beyond traditional settings.
Job Titles at the Intersection
Concrete roles for MLIS holders include digital collections librarian, biodiversity data curator, metadata librarian, open access librarian, digital preservation specialist, and natural history collections manager. These positions appear in institutions like the Smithsonian, the Field Museum, the New York Botanical Garden, Royal Botanic Gardens Kew, and Harvard's Ernst Mayr Library, as well as within the Biodiversity Heritage Library (BHL) consortium itself.
Real Roles in Action
Recent job postings illustrate the blend of skills employers seek. In 2024, 2026, the Smithsonian Institution advertised a Librarian, Biodiversity Heritage Library based in Washington, DC, requiring an MLIS degree and experience with digital collections and metadata standards such as MARC, Dublin Core, and MODS.1 The role centered on curating biodiversity digital content. Simultaneously, the Smithsonian Libraries and Archives sought a Program Manager, Biodiversity Heritage Library, a senior position calling for an MLIS or a degree in biology or biodiversity informatics, plus program management skills and strategic planning for consortium-wide initiatives.2 On the West Coast, the Natural History Museum of Los Angeles County posted for a Collections Assistant, Databases/IT in 2026, looking for a data curator who could handle structured data, database interfaces, and digital collection workflows, a natural fit for MLIS graduates with technical coursework.3
Where Science and Librarianship Converge
These roles share a common thread: they demand not just traditional library competencies but also a working knowledge of biodiversity informatics. An MLIS graduate who can speak both cataloging and species-level data curation has a distinct edge over candidates trained in only one domain. Basic science literacy, understanding how researchers use field diaries, taxonomic revisions, or geographic distribution records, can set an applicant apart, even for positions that do not require a science degree.
Essential MLIS Skills for Open Science Libraries
What metadata schemas and technical skills does an open science librarian need to manage collections like the Biodiversity Heritage Library? Librarians working with BHL rely on a stack of interoperable standards and tools that span metadata creation, data extraction, and rights management. Mastering these frameworks allows MLIS graduates in digital libraries to curate biodiversity literature and contribute to global open science initiatives.
Core Metadata Standards
- MODS: An XML-based descriptive metadata standard developed by the Library of Congress; BHL institutions transform MARC records to MODS for digital library systems and exposure via the BHL API and Internet Archive.2
- Dublin Core: A general-purpose metadata standard that BHL uses for interoperability and OAI-PMH harvesting, reusing the DCMI type vocabulary for consistent resource typing.3
- Darwin Core: A biodiversity data sharing standard maintained by TDWG; BHL uses it to map taxonomic names and occurrences mined from full text into structured records for aggregators like GBIF.1
- Ecological Metadata Language (EML): A modular XML standard for describing ecological datasets; whenever BHL literature-derived occurrences are published as Darwin Core Archives, each includes an EML file detailing methods and constraints.1
- Audubon Core: A TDWG standard for multimedia resources; BHL applies it to describe page images, plates, or illustrations linked to taxa, including technical and rights metadata with BHL identifiers.1
Technical Infrastructure and Tools
- BHL API: A REST-style interface that returns JSON or XML for titles, items, pages, and taxonomic names. Curators use it to retrieve page images and OCR text for target taxa, then link them to Darwin Core datasets.4
- Internet Archive integration: BHL uses the Internet Archive for scanning, storage, and public access, then harvests IA metadata and files to align with catalog records and expose combined records through the BHL portal and API.4
- OCR and text mining pipelines: OCR engines such as ABBYY and Tesseract generate machine-readable text from page images; name-finding tools then extract scientific names and contextual data, which are mapped to Darwin Core occurrence records.4
Rights Management and Data Publishing
- Rights management frameworks: Creative Commons licenses, RightsStatements.org terms, and library-specific rights notes are recorded in descriptive metadata and synchronized with the Internet Archive; they inform reuse decisions and annotate Darwin Core and EML records with licensing information.3
- ABCD and BioCASe: ABCD is an XML standard for collection data exchange, and BioCASe is a network layer using it; BHL literature references can be linked to specimen databases published via BioCASe, aligning bibliographic context with collection records.5
These competencies sit squarely within skills you learn in an MLS program, and practitioners who combine them with Python for library automation can build powerful data pipelines that feed occurrence records from digitized texts into global biodiversity aggregators.
Related Articles
Salaries for Librarians, Curators, and Archivists in Biodiversity Institutions
While the U.S. Bureau of Labor Statistics does not publish salary breakdowns specifically for biodiversity or natural history institutions, the following national estimates for related occupations offer a useful reference point. Roles in these categories are commonly found in museums, botanical gardens, research libraries, and other settings that contribute to open science initiatives like the Biodiversity Heritage Library.
| Occupation | Employment | Mean Annual Wage | 25th Percentile | Median Annual Wage | 75th Percentile |
|---|---|---|---|---|---|
| Librarians, Curators, and Archivists | 238,010 | $60,220 | $40,410 | $57,100 | $74,800 |
| Librarians and Media Collections Specialists | 131,830 | $69,180 | $50,920 | $64,320 | $80,640 |
| Library Science Teachers, Postsecondary | 4,100 | $84,320 | $62,130 | $78,630 | $97,020 |
Internships, Fellowships, and Entry Points for MLIS Students
Internships and fellowships are structured, temporary positions that allow MLIS students to build real-world skills inside natural history libraries, archives, and museums. These roles often come with a stipend or academic credit and can serve as a direct pipeline to full-time employment in biodiversity librarianship.
Where to Look for Opportunities
The most direct route is to visit the career or opportunities pages of institutions that form the Biodiversity Heritage Library consortium. Major members such as the Smithsonian Libraries, New York Botanical Garden, Missouri Botanical Garden, Natural History Museum London, Royal Botanic Gardens Kew, and Harvard University maintain specialized library and archive teams.1 Each site may offer internships, fellowships, or volunteer positions at different times of the year. Search their websites for terms like "internships," "fellowships," or "volunteer" to uncover current listings. These can range from digitization projects and metadata creation to collection processing and public outreach. While not a BHL member, the Baltimore Museum of Industry's internship program accepts graduate students in library science year-round, with application cycles for Fall 2025 and Spring 2026, showing the kind of structured entry point available at similar institutions.2
Using Your MLIS Program Resources
Your MLIS program's career services office is an often overlooked asset. Many schools keep curated lists of opportunities at partner institutions, including museums, botanical gardens, and research libraries. Alumni networks can also provide insider knowledge about upcoming openings before they are widely posted. Reach out to faculty members who specialize in digital libraries or science librarianship; they may know of funded projects seeking graduate assistants. MLIS graduate student tips from peers who have navigated similar searches can also point you toward resources your program already has in place.
Timing Your Search with Labor Market Data
Federal labor market data from the Bureau of Labor Statistics (BLS) can help you forecast when institutions are likely to post positions. Many academic and museum libraries plan internships 3 to 6 months before the start date, so a Spring 2026 placement may be advertised in Fall 2025.3 Set up job alerts on platforms like Archives Gig, Idealist, and LinkedIn using keywords such as "biodiversity library," "natural history archives," or "science librarian intern." Library associations for MLIS students such as the Special Libraries Association (SLA) and American Library Association (ALA) also aggregate listings in specialized fields through their job boards. Planning at least 6 to 12 months ahead gives you the best chance of securing a role that aligns with your career goals.3
MLIS Specializations and Courses That Prepare You for Biodiversity Librarianship
Today's MLIS programs are rapidly adapting to the needs of open science and digital cultural heritage, making it easier than ever to tailor a degree toward biodiversity librarianship.
Programs with Aligned Concentrations
Several ALA-accredited programs offer tracks that map directly to digital collections and data curation. The University of Illinois Urbana-Champaign, for example, has a Digital Curation and Data Stewardship concentration1 with courses such as IS 505: Information Organization and Access.2 Faculty research areas at the iSchool span data curation, digital libraries, and bioinformatics for biological sciences1, making it a particularly strong fit for biodiversity-focused students. The University of Washington's iSchool includes a Digital Libraries specialization, while Simmons University's Archives Management concentration provides strong preservation foundations. At the University of Michigan, the Digital Curation pathway blends data management and archival theory. San Jose State University's online MLIS also allows extensive customization through electives in digital services and emerging technologies.
Coursework That Builds BHL-Relevant Skills
Whether selecting a named track or a generalist degree, key courses prepare you for work like the Biodiversity Heritage Library. MLIS programs in digital libraries teach collection management at scale, while archives classes emphasize provenance and preservation of unique materials. Data science skills for academic librarians are increasingly relevant, with text mining techniques proving useful for processing taxonomic literature. Open access policy courses cover rights management and licensing, critical for digitizing legacy scientific works. Even without a formal concentration, adding electives in geographic information systems (GIS) or data visualization can distinguish a candidate when applying for natural history library positions.
Professional Development Beyond the Classroom
Complementing coursework, targeted workshops and events deepen specialized knowledge. The Research Data Access and Preservation (RDAP) Summit offers sessions on data stewardship for cultural heritage. The how to choose a concentration for library science program guidance can help you identify which combination of electives best aligns with biodiversity informatics roles. Training from iDigBio provides hands-on experience with biodiversity informatics tools. Participation in these communities not only builds skills but also expands professional networks that can lead to internships and jobs in biodiversity libraries.
From MLIS to BHL: A Career Pathway
For MLIS graduates interested in biodiversity and open science, the path from graduate school to the Biodiversity Heritage Library (BHL) involves building specialized skills in digital curation, metadata, and collaboration. The following career pathway shows typical progression from entry-level roles to senior leadership in digital library environments.
Job Market Outlook for Science and Digital Librarians
The Bureau of Labor Statistics projects about 13,500 openings over the decade for librarians and media collections specialists between 2024 and 2034, roughly 1,350 per year, with a modest growth rate of 1 to 2 percent.1 That figure captures the broader occupational category, including school and public libraries, and does not fully account for the accelerating demand within specialized digital and data curation roles.
Traditional Projections vs. Digital Demand
While BLS numbers suggest steady rather than explosive growth, they mask a significant divergence: traditional library positions face budget constraints and consolidation, yet institutions are aggressively hiring for digital preservation, research data management, and scholarly communications expertise. Biodiversity libraries and open science platforms like the Biodiversity Heritage Library (BHL) exemplify this shift. As global digitization mandates expand, the need for MLIS-trained professionals who can manage complex metadata schemas, ensure long-term digital preservation, and curate research datasets is rising faster than the overall librarian growth rate.
Funding and Policy Tailwinds
Federal funding streams and open science policies are fueling demand that BLS projections do not capture. Grants from the Institute of Museum and Library Services (IMLS) and the National Science Foundation (NSF) routinely support biodiversity informatics and digitization projects. International mandates, such as UNESCO's open science recommendation and funder requirements for shared data, push universities and museums to invest in library-led data curation. The BHL consortium itself has grown to include over 680 institutions, each requiring skilled digital asset management librarians to contribute and manage content.
The Portable Skill Set Advantage
Job postings titled "biodiversity librarian" remain rare. However, the core competencies developed in an MLIS program, including metadata standards, digital asset management, information architecture, and user-centered design, map directly onto roles in science librarianship programs and careers at natural history museums and research data centers. A graduate who has honed these skills through internships or coursework focused on biodiversity data is equally prepared for positions in health sciences, geospatial data, or university digital repositories. This portability reduces career risk and opens a wider range of opportunities.
Frequently Asked Questions About Biodiversity Librarianship
Below are answers to common questions about biodiversity librarianship, from the skills you need to the career paths available.
- What is the Biodiversity Heritage Library and what does it contain?
- The Biodiversity Heritage Library (BHL) is a consortium of over 680 museums, universities, and scientific institutions that has made more than 64 million pages freely available online since 2006. It houses published biodiversity literature, field diaries, illustrations, climate records, and manuscripts, including a 12th-century pharmacopeia and Sir Joseph Hooker's 1841 Antarctic journal.
- Do I need a science degree to become a biodiversity librarian?
- No, a science degree is not required. An MLIS with coursework in digital libraries, metadata, or data curation is typically the foundation. Familiarity with scientific terminology, taxonomy, or natural history can be beneficial and is often gained on the job or through continuing education.
- Are there internships at the Biodiversity Heritage Library for MLIS students?
- Yes, BHL and its partner institutions frequently offer internships and fellowships. Opportunities range from digitization and metadata projects to data curation and outreach. Check the BHL website and member organizations like the Smithsonian Libraries or Royal Botanic Gardens, Kew, for current listings.
- What is the salary for librarians working in natural history museums and botanical gardens?
- Salaries vary by institution, role, and location. According to our related salary table, librarians in these settings typically earn between $50,000 and $80,000 annually. Senior or specialized roles, such as digital curation or data management, may command higher pay.
- What MLIS specializations best prepare me for open science librarianship?
- Specializations in digital libraries, data curation, metadata and cataloging, and scholarly communication are ideal. Courses on open access, research data management, and information retrieval also build the skills needed to support open science initiatives like BHL.
- How is biodiversity librarianship different from general academic librarianship?
- Biodiversity librarianship focuses on natural history collections and often involves working with unique formats such as field notes, specimen records, and historical illustrations. It requires understanding of taxonomic databases and collaboration with researchers in biology and environmental science, beyond the broader scope of academic library services.
