1. Site tenacity and nomadism in Tengmalm's owl (Aegolius funereus (L.)) in relation to cyclic food production

   • O. Löfgren
   • B. Hörnfeldt
   • B. -G. Carlsson

   Original Papers Pages: 321 - 326

2. Adaptive differentiation of body size in speciating mole rats

   • Eviatar Nevo
   • Avigdor Beiles
   • Shimon Simson

   Original Papers Pages: 327 - 333

3. The role of taste in food selection by freshwater zooplankton

   • William R. DeMott

   Original Papers Pages: 334 - 340

4. Group living and the effects of spatial position in aggregations of Mytilus edulis

   • B. Okamura

   Original Papers Pages: 341 - 347

5. Population structure and thinning in natural stands of Atlantic White Cedar (Chamaecyparis thyoides (L.) BSP)

   • David J. Gibson
   • Ralph E. Good

   Original Papers Pages: 348 - 353

6. Effects of an early-season folivorous moth on the success of a later-season species, mediated by a change in the quality of the shared host, Lupinus arboreus Sims

   • Susan Harrison
   • Richard Karban

   Original Papers Pages: 354 - 359

7. The effect of acquired microbial enzymes on assimilation efficiency in the common woodlouse, Tracheoniscus rathkei

   • Jerome J. Kukor
   • Michael M. Martin

   Original Papers Pages: 360 - 366

8. Trophic eggs and parental foraging for young by the catfish Bagrus meridionalis of Lake Malawi, Africa

   • Kenneth R. McKaye

   Original Papers Pages: 367 - 369

9. Interaction of bodymass, fat, foraging and stopover period in trans-Sahara migrating passerine birds

   • H. Biebach
   • W. Friedrich
   • G. Heine

   Original Papers Pages: 370 - 379

10. Vegetative reproduction as a stabilizing feature of the population dynamics of Yucca glauca

    • R. W. Kingsolver

    Original Papers Pages: 380 - 387

11. Developmental characteristics of two closely related species of Allonemobius and their hybrids

    • Seiji Tanaka

    Original Papers Pages: 388 - 394

12. The isotopic ecology of East African mammals

    • Stanley H. Ambrose
    • Michael J. DeNiro

    Original Papers Pages: 395 - 406

13. Geographic patterns in the flight ability of a monophagous beetle

    • Mark A. Davis

    Original Papers Pages: 407 - 412

14. Intra-and intercolony patterns of nest dispersion in the ant Lasius neoniger: correlations with territoriality and foraging ecology

    • James F. A. Traniello
    • Sally C. Levings

    Original Papers Pages: 413 - 419

15. Adding teeth to wave action: the destructive effects of wave-borne rocks on intertidal organisms

    • Alan L. Shanks
    • William G. Wright

    Original Papers Pages: 420 - 428

16. Resource partitioning and competition for shells in a subtidal hermit crab species assemblage

    • Peter Abrams
    • Carl Nyblade
    • Sallie Sheldon

    Original Papers Pages: 429 - 445

17. Overdispersion of ant colonies: a test of hypotheses

    • Randall T. Ryti
    • Ted J. Case

    Original Papers Pages: 446 - 453

18. The response of plants to elevated CO₂

    • William E. Williams
    • K. Garbutt
    • P. M. Vitousek

    Original Papers Pages: 454 - 459

19. The predation of predispersed Juncus squarrosus seeds by Coleophora alticolella (Lepidoptera) larvae over a range of altitudes in northern England

    • Martin G. M. Randall

    Original Papers Pages: 460 - 465

20. Formation of false stems in Cymopterus longiopes: an uplifting example of growth form change

    • Kenneth S. Werk
    • James Ehleringer
    • P. C. Harley

    Original Papers Pages: 466 - 470

21. Factors regulating fruit and seed production in the desert annual Lesquerella gordonii

    • Lynda F. Delph

    Original Papers Pages: 471 - 476

22. Diurnal variations of light-saturated CO₂ assimilation and intercellular carbon dioxide concentration are not related to leaf water potential

    • M. Küppers
    • R. Matyssek
    • E. -D. Schulze

    Short Communication Pages: 477 - 480