A System-wide Perspective on SCELC Library Collections

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The world’s libraries. Connected. A System-wide Perspective on SCELC Library Collections SCELC Colloquium, 6 March 2013 Constance Malpas Program Officer OCLC Research Follow me @ConstanceM With thanks to Brian Lavoi

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Part of a panel with Karen Schneider, John McDonald and Bob Kieft presented at SCELC Colloquium, March 2013.

Transcript of A System-wide Perspective on SCELC Library Collections

Page 1: A System-wide Perspective on SCELC Library Collections

The world’s libraries. Connected.

A System-wide Perspective on SCELC Library Collections

SCELC Colloquium, 6 March 2013

Constance Malpas

Program OfficerOCLC Research

Follow me @ConstanceM

With thanks to Brian Lavoie

Page 2: A System-wide Perspective on SCELC Library Collections

The world’s libraries. Connected.

Aggregate resource comprising millions of titles, tense of millions of WorldCat holdings, including

~1M titles unique in WorldCat ‘system’

Diverse range of institution and library types with robust resource sharing network … an ecosystem

Membership spans 3 mega-regions: NorCal, SoCal and Dal-Austin

Page 3: A System-wide Perspective on SCELC Library Collections

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• SCELC eco-system: resources & infrastructure

• Mega-regional context: NorCal & SoCal

• Right-scaling stewardship solutions

Overview

Page 4: A System-wide Perspective on SCELC Library Collections

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SCELC EcosystemGroup Scale

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The world’s libraries. Connected.

0 500,000 1,000,000 1,500,000 2,000,000 2,500,000 3,000,000

-20%

0%

20%

40%

60%

80%

100%

Growth in SCELC Library Holdings in WorldCatJan 2012 – Jan 2013

SCELC Member Holdings in WorldCat

Per

cen

t G

row

th

Median holdings in January 2013: 110K titlesMedian growth Jan 2012 – Jan 2013: +2%

Considerable volatility at institutional scaleA few libraries exhibit negative growthCollectively, a pattern of moderate, sustained growth

OCLC Research, 2013

Based on analysis of 104 SCELC holding symbols; some outliers have been excluded from this graph to improve legibility.

Page 6: A System-wide Perspective on SCELC Library Collections

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Institutional Infrastructure

Library Type Percent of SCELC Library Population

Percent of SCELC Aggregate Holdings

Non-ARL Academic 82% 77%

Special 13% 10%

ARL 2% 13%

Other 3% <1%

Non-ARL academic libraries constitute majority of SCELC membership and hold more than 75% of aggregate inventory

** Institutions with stewardship mandate and preservation capacity

*( )

OCLC Research, 2013

Based on analysis of 104 SCELC holding library symbols

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1 2 to 9 10 to 24 25-99 >990%

10%

20%

30%

40%

50%

60%

70%

Average Distribution of WorldCat Holdings for Titles in SCELC Member Libraries

Holding Libraries (WorldCat)

10% held by <10 libraries 6% held by 10-24 libraries 19% held by 25-99 libraries 65% held by >99 libraries

Based on average WorldCat holdings distribution for 104 SCELC libraries

OCLC Research, 2013

Page 8: A System-wide Perspective on SCELC Library Collections

The world’s libraries. Connected.

NorCal and SoCalMega-regional perspective

Page 9: A System-wide Perspective on SCELC Library Collections

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http://www.maps.com/map.aspx?pid=17252

Where to draw the line?

What does the distribution of library resources tell us?

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• Mega-regions differ from informal NorCal, SoCal boundaries because they reflect the actual organization of regional economic activity

• A useful framework for examining distribution of library resources and infrastructure, a ‘natural unit’ of measure

• Helps situate print management within broader networks of economic exchange; builds on existing organizational infrastructure and institutional interests

Why focus on ‘mega-regions’?

Page 11: A System-wide Perspective on SCELC Library Collections

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Print Books in California Mega-Regions

NorCal SoCal

Regional print book collection• 12,481,999 discrete titles

• 40,154,364 holdings in 775 libraries

• 3.22 holdings per title on average

• Median age: 23 (i.e. published 1988)

Regional print book collection• 9,771,974 discrete titles

• 39,969,816 holdings in 774 libraries

• 4.09 holdings per title on average

• Median age: 30 (i.e. published 1981)

OCLC Research, 2013

21% of print book titles in North America> 900K titles unique to SoCal

27% of titles in North America>1.5M titles unique to NorCal

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Print Book Holdings by Library Type

NorCal SoCalN = 40M holdings N = 40M holdings

OCLC Research, 2013

Majority of regional print book inventory is held by academic libraries

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Print Book Holdings by Academic Library Type

NorCal SoCalN = 22M academic holdings N = 26M academic holdings

20%

35% 37%

27%

OCLC Research, 2013

…mostly in non-ARL academic libraries

Page 14: A System-wide Perspective on SCELC Library Collections

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Regional collections are complementary

NorCal

SoCal

duplicates 63% of SoCal collection

duplicates 49% of NorCal collection

>6M titles not duplicated in SoCal

Each enriches scope of collective resource

Each contributes preservation value

>3MK titles not duplicated in NorCal

OCLC Research, 2013

Page 15: A System-wide Perspective on SCELC Library Collections

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Summing up

• More titles, more holdings

• Less duplication at intra-regional and inter-regional scale

• Lesser part of inventory held by ARLs

• Fewer options for redistribution of stewardship

• Fewer titles, fewer holdings

• More duplication at intra-regional and inter-regional scale

• Greater part of inventory held by ARLs

• More options for redistribution of stewardship

NorCal SoCal

OCLC Research, 2013

Regional context for shared print management differs

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SCELC in System-wide Context

Scaling up

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• On average, print book titles account for ~75% of individual SCELC library holdings in WorldCat

• As of January 2013, an aggregate resource of nearly 5.3M discrete titles, 13.7M holdings

Print Books in SCELC Libraries

January 2011 January 20134,700,000

4,800,000

4,900,000

5,000,000

5,100,000

5,200,000

5,300,000

4,948,924

5,271,295

Print Book Titles in SCELC Libraries

• Average 2.6 SCELC holdings per title

• Scope of collection is growing +7%

OCLC Research, 2013

Page 18: A System-wide Perspective on SCELC Library Collections

The world’s libraries. Connected.

Scale Matters: Assessing Print Preservation Risks

N = 5,271,295 titles

~86% of print books in SCELC collective collection are held by fewer than 5 libraries in group

OCLC Research, 2013

Page 19: A System-wide Perspective on SCELC Library Collections

The world’s libraries. Connected.

Scale Matters: Assessing Print Preservation Risks

N = 5,271,295 titles

~86% of print books in SCELC collective collection are held by fewer than 5 libraries in group

~16% of print books in ASERL/WRLC collective collection are held by fewer than 5 libraries in WorldCat

OCLC Research, 2013

Page 20: A System-wide Perspective on SCELC Library Collections

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What do SCELC libraries have to offer as a regional preservation asset?

Probably not.

28% of the NorCal regional collection

47% of the SoCal regional collection

does SCELC want to assume sole responsibility for managing these books as a regional resource?

Collectively, SCELC libraries hold 5.3M print book titles, representing

(NorCal duplicates 70% of SCELC)

(SoCal duplicates 93% of SCELC)

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Could SCELC libraries strike bargains with regional print management hubs?

Very Large Repository X

Very Large Repository Y

Might provide preservation / access services for average 15% of SCELC holdings in NorCal

Might provide preservation / access services for average 16% of SCELC holdings in SoCal

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A cooperative preservation and access strategy

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CUHPPI

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CAPCAM AI#

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CPTCIT

CURCDU

LMR

RSM

0%

5%

10%

15%

20%

25%

30%

35%

40%

45%

50%

SCELC Library Overlap with Regional Repositories

NorCal repository SoCal repository

might recover >8K linear feet of shelf space

might recover >15K linear feet of shelf space

OCLC Research, 2013

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The world’s libraries. Connected.

0 500,000 1,000,000 1,500,000 2,000,000 2,500,000 3,000,0000%

10%

20%

30%

40%

50%

60%

70%

Duplication between SCELC Library Collections and HathiTrust Digital Library

Holdings in WorldCat

Per

cen

t o

f H

old

ing

s D

up

licat

ed in

Hat

hiT

rust

What can SCELC libraries worry less about preserving?

About 30% of your collection, on average

3%

26% in copyright

public domain

As of January 2012.

OCLC Research, 2013

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Where should SCELC libraries be focusing more preservation effort?

1 to 4 libraries 5 to 9 libraries 10-24 libraries 25 to 99 libraries >99 libraries0

200,000

400,000

600,000

800,000

1,000,000

1,200,000

1,400,000

1,600,000

1,800,000

WorldCat Holdings for Print Book Titles in SCELC Libraries

Preserve as institutional

assets

Look to other partners

Strike agreements

within SCELC

N = 5,271,295 titles

OCLC Research, 2013

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The world’s libraries. Connected.

• SCELC libraries manage a significant collective resource for which traditional, institution-scale stewardship models may not be sustainable.

• Assessing preservation risks at group scale may lead to misjudgments about locus and level of investment.

• Scaling up to regional and network level infrastructure reveals more opportunities to redistribute and ‘right-scale’ stewardship solutions.

Parting Thoughts

Page 26: A System-wide Perspective on SCELC Library Collections

The world’s libraries. Connected.

Thanks for your attention.

[email protected]