National Academies Press: OpenBook

Improving Fish Stock Assessments (1998)

Chapter: Appendix G

« Previous: Appendix F
Suggested Citation:"Appendix G." National Research Council. 1998. Improving Fish Stock Assessments. Washington, DC: The National Academies Press. doi: 10.17226/5951.
×

G— Retrospective Values

Suggested Citation:"Appendix G." National Research Council. 1998. Improving Fish Stock Assessments. Washington, DC: The National Academies Press. doi: 10.17226/5951.
×

TABLE G.1 Retrospective Summaries of Terminal Year Exploitable Biomass

    Stock Assessment Models

Data Set

End Year

SS-P3 (F)

SS-P3 (B)

SS-P3 (S)

SS-P7 (F)

ADMB4 (F)

ADMB4 (B)

NRC ADAPT (F)

NRC ADAPT (B)

NRC ADAPT (S)

True Value

Absolute Change in True Value

1

15

2764

1454

1113

2793

938

742

1680

1073

820

1154

 

1

16

2549

1292

1165

2493

1297

787

1896

972

918

689

-465

1

17

2170

849

777

2055

1201

663

1666

810

962

591

-98

1

18

2090

835

775

2076

986

663

1387

754

709

414

-177

1

19

2027

871

784

1514

985

724

1421

677

623

519

105

1

20

886

876

459

1624

492

415

1068

514

470

730

211

1

21

329

549

418

534

315

307

1126

623

538

677

-53

1

22

333

490

408

384

326

274

1174

572

498

853

176

1

23

310

441

296

326

353

292

1425

728

654

764

-89

1

24

386

373

274

363

413

202

1223

545

478

548

-216

1

25

649

406

375

544

446

227

986

494

436

240

-308

1

26

661

307

285

261

542

195

1367

438

371

289

49

1

27

654

236

222

180

567

146

1433

382

326

261

-28

1

28

339

211

190

182

491

150

1142

484

380

402

141

1

29

276

224

215

177

192

133

1213

440

323

249

-153

1

30

418

252

241

182

172

120

1476

378

298

276

27

2

15

2061

1001

938

1820

1714

1061

1443

1155

1141

1466

 

2

16

2417

901

955

2731

2350

973

14,537

1302

1285

978

-488

2

17

670

751

731

737

1742

818

1929

1158

1109

1029

51

2

18

869

802

802

1035

1603

781

1323

1073

1051

791

-238

2

19

652

745

791

647

1109

638

1150

741

735

824

33

2

20

616

866

670

831

1202

632

1104

512

492

1055

231

2

21

864

855

703

1214

1328

579

1929

868

827

1082

27

2

22

857

972

677

1324

1914

807

6691

1098

1096

1332

250

2

23

618

628

371

663

995

467

2957

1015

978

1124

-208

2

24

452

305

248

456

660

333

1900

822

731

766

-358

2

25

1011

408

438

1047

511

282

1757

573

468

400

-366

2

26

720

263

301

628

672

228

1267

481

388

287

-113

2

27

689

165

201

111

492

122

1048

293

239

208

-79

2

28

279

162

229

100

411

159

861

403

366

440

232

2

29

614

256

292

200

495

205

881

436

381

239

-201

2

30

463

222

259

170

373

177

1008

434

330

346

107

2

15

7622

7139

5898

7622

5533

4564

4715

4218

3935

5033

 

3

16

6365

6151

6024

6346

4027

4064

3972

4093

4032

4603

-430

3

17

5669

5480

5360

5680

4398

4536

4074

3697

3684

4388

-215

3

18

4817

4636

4525

4823

5286

5005

4700

4216

4205

3145

-1243

3

19

4178

4090

3943

4300

4730

4862

4547

4549

4458

2813

-332

3

20

1327

4816

3548

4848

1864

4752

4121

4653

4637

3379

566

3

21

1192

4664

1602

5112

1821

2938

4955

5079

5098

3794

415

3

22

1961

5097

2933

5017

2892

3761

6261

7590

7660

3946

152

3

23

1618

5047

2505

4509

2648

3621

5593

5658

5820

3426

-520

3

24

2451

4510

1882

1878

2901

2626

4589

5276

5262

3430

4

3

25

4818

4426

3701

4385

3298

2806

3990

4375

4484

2444

-986

3

26

4805

3904

3079

4186

3720

2300

3778

3594

3566

2170

-274

3

27

3930

3345

3039

3212

3895

2191

3449

3118

3093

1492

-678

3

28

1925

1201

1127

558

4097

1962

3627

3144

3077

1744

252

3

29

3522

1960

1746

2743

3962

1405

3371

2431

2272

1032

-712

3

30

2871

1808

1835

2089

4014

1393

3289

2286

2032

903

-129

4

15

1957

1087

1099

1584

2483

1180

3402

1593

1444

1693

 

4

16

1218

803

832

1376

1844

904

2992

1244

1121

1049

-644

4

17

1445

774

772

1139

1869

874

 

967

861

947

-102

4

18

1432

752

771

1474

1758

774

2491

630

720

699

-248

4

19

1419

891

893

1573

1816

907

2593

1063

910

594

-105

4

20

560

724

528

1182

755

536

1815

829

778

669

75

4

21

432

563

479

730

575

415

1474

650

568

463

-206

4

22

250

508

444

220

501

387

1467

727

666

408

-55

4

23

386

414

397

426

678

382

1809

739

584

660

252

4

24

342

436

357

310

462

316

1370

800

665

469

-191

4

25

399

482

497

348

397

340

1537

776

576

218

-251

4

26

511

522

539

420

383

363

2058

869

702

339

121

4

27

469

522

533

420

394

358

1943

787

737

290

-49

4

28

315

393

357

322

351

296

2216

840

670

355

65

4

29

127

142

142

134

138

118

1372

466

246

97

-258

4

30

106

121

119

109

138

107

1019

362

225

115

18

5

15

3415

4334

3792

3458

1305

1660

2565

3124

3193

6055

 

5

16

4632

4866

4120

4738

2200

1995

2729

3519

3560

4851

-1204

5

17

5273

6412

5938

5390

2564

2616

3212

3906

3969

6251

1400

5

18

6428

7318

6819

7234

3642

3760

3488

3650

3697

7004

753

5

19

6626

7204

6711

6777

3269

3811

3936

4350

4412

6344

-660

5

20

7038

8570

7357

7739

3131

3719

3769

4366

4441

7239

895

5

21

5880

7343

6567

7142

3164

3401

3430

3724

3498

7195

-44

5

22

5478

6870

6412

6489

3056

3224

3269

3984

4056

7164

-31

5

23

5829

6690

6408

6140

3195

3214

3158

4012

4042

7708

544

5

24

4502

6450

5908

4533

2106

2943

2369

4051

4077

8175

467

5

25

5379

6282

6464

6016

2988

2913

2996

3575

3615

6524

-1651

5

26

7018

6353

6688

7154

3182

2979

3384

3774

3805

7390

866

5

27

7258

6593

6671

7224

3482

3067

3030

3463

3511

5634

-1756

5

28

6494

5652

5583

6776

3650

2708

3085

3292

3307

6864

1230

5

29

6506

5276

5077

6592

3728

2792

2754

3077

3085

5001

-1863

5

30

5397

4477

4107

6333

3613

2427

2756

3005

2973

5158

157

NOTE: ADMB = Autodifferentiation Model Builder: SS = Stock Synthesis; ADAPT = adaptive approach.

Suggested Citation:"Appendix G." National Research Council. 1998. Improving Fish Stock Assessments. Washington, DC: The National Academies Press. doi: 10.17226/5951.
×

Complete table on previous page.

Suggested Citation:"Appendix G." National Research Council. 1998. Improving Fish Stock Assessments. Washington, DC: The National Academies Press. doi: 10.17226/5951.
×
This page in the original is blank.
Suggested Citation:"Appendix G." National Research Council. 1998. Improving Fish Stock Assessments. Washington, DC: The National Academies Press. doi: 10.17226/5951.
×
Page 149
Suggested Citation:"Appendix G." National Research Council. 1998. Improving Fish Stock Assessments. Washington, DC: The National Academies Press. doi: 10.17226/5951.
×
Page 150
Suggested Citation:"Appendix G." National Research Council. 1998. Improving Fish Stock Assessments. Washington, DC: The National Academies Press. doi: 10.17226/5951.
×
Page 151
Suggested Citation:"Appendix G." National Research Council. 1998. Improving Fish Stock Assessments. Washington, DC: The National Academies Press. doi: 10.17226/5951.
×
Page 152
Next: Appendix H »
Improving Fish Stock Assessments Get This Book
×
Buy Paperback | $72.00 Buy Ebook | $59.99
MyNAP members save 10% online.
Login or Register to save!
Download Free PDF

Ocean harvests have plateaued worldwide and many important commercial stocks have been depleted. This has caused great concern among scientists, fishery managers, the fishing community, and the public. This book evaluates the major models used for estimating the size and structure of marine fish populations (stock assessments) and changes in populations over time. It demonstrates how problems that may occur in fisheries data—for example underreporting or changes in the likelihood that fish can be caught with a given type of gear—can seriously degrade the quality of stock assessments. The volume makes recommendations for means to improve stock assessments and their use in fishery management.

  1. ×

    Welcome to OpenBook!

    You're looking at OpenBook, NAP.edu's online reading room since 1999. Based on feedback from you, our users, we've made some improvements that make it easier than ever to read thousands of publications on our website.

    Do you want to take a quick tour of the OpenBook's features?

    No Thanks Take a Tour »
  2. ×

    Show this book's table of contents, where you can jump to any chapter by name.

    « Back Next »
  3. ×

    ...or use these buttons to go back to the previous chapter or skip to the next one.

    « Back Next »
  4. ×

    Jump up to the previous page or down to the next one. Also, you can type in a page number and press Enter to go directly to that page in the book.

    « Back Next »
  5. ×

    Switch between the Original Pages, where you can read the report as it appeared in print, and Text Pages for the web version, where you can highlight and search the text.

    « Back Next »
  6. ×

    To search the entire text of this book, type in your search term here and press Enter.

    « Back Next »
  7. ×

    Share a link to this book page on your preferred social network or via email.

    « Back Next »
  8. ×

    View our suggested citation for this chapter.

    « Back Next »
  9. ×

    Ready to take your reading offline? Click here to buy this book in print or download it as a free PDF, if available.

    « Back Next »
Stay Connected!