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Titolo:
PATTERNS AND MECHANISMS OF PLANT DIVERSITY IN FORESTED ECOSYSTEMS - IMPLICATIONS FOR FOREST MANAGEMENT
Autore:
ROBERTS MR; GILLIAM FS;
Indirizzi:
UNIV NEW BRUNSWICK,FAC FORESTRY & ENVIRONM MANAGEMENT,POB 44555 FREDERICTON NB E3B 6C2 CANADA MARSHALL UNIV,DEPT BIOL SCI HUNTINGTON WV 25755
Titolo Testata:
Ecological applications
fascicolo: 4, volume: 5, anno: 1995,
pagine: 969 - 977
SICI:
1051-0761(1995)5:4<969:PAMOPD>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPECIES-DIVERSITY; SUCCESSION; BIODIVERSITY; DISTURBANCE; PLANTATIONS; VEGETATION;
Keywords:
DISTURBANCE; DIVERSITY THEORY; EQUILIBRIUM MODELS; INTERMEDIATE DISTURBANCE HYPOTHESIS; LIFE HISTORIES; NONEQUILIBRIUM MODELS; PLANTS; RESEARCH NEEDS; SITE QUALITY; SPATIAL SCALES; SPECIES DIVERSITY; SUCCESSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
66
Recensione:
Indirizzi per estratti:
Citazione:
M.R. Roberts e F.S. Gilliam, "PATTERNS AND MECHANISMS OF PLANT DIVERSITY IN FORESTED ECOSYSTEMS - IMPLICATIONS FOR FOREST MANAGEMENT", Ecological applications, 5(4), 1995, pp. 969-977

Abstract

The objectives of this paper are to (1) review existing diversity models, (2) identify principles that explain patterns of plant species diversity, (3) discuss implications for forest management, and (4) identify research needs. Many current theories cast disturbance as the key player in maintaining species diversity by preventing competitive dominance of one or a few species. Equilibrium and nonequilibrium theoriesalike agree that maximum diversity should occur at intermediate size,frequency, and intensity of disturbance. These models do not adequately predict patterns at all spatial scales or across community types. Amechanistic theory is needed to explain diversity patterns at the patch, stand, and landscape scales, as well as across site quality and successional gradients. Such a theory should be based upon the interaction between species' life-history characteristics and the nature of disturbance. New research is needed in the following areas: identifying disturbance-life-history interactions, particularly with respect to theshort-term and longterm effects of disturbance; quantifying patch diversity and determining its relationship with species diversity; determining relationships between species diversity and structural and functional diversity; and identifying appropriate standards of comparison for managed stands. Comparative studies in different ecosystem types, such as boreal and tropical forests, should be encouraged to help clarify the relative importance of processes that influence diversity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 16:26:02