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Titolo:
ECOLOGICAL EFFECTS OF RIVER ICE BREAK-UP - A REVIEW AND PERSPECTIVE
Autore:
SCRIMGEOUR GJ; PROWSE TD; CULP JM; CHAMBERS PA;
Indirizzi:
UNIV ALBERTA,DEPT ZOOL EDMONTON T6G 2E9 AB CANADA NATL HYDROL RES INST SASKATOON S7N 3H5 SK CANADA
Titolo Testata:
Freshwater Biology
fascicolo: 2, volume: 32, anno: 1994,
pagine: 261 - 275
SICI:
0046-5070(1994)32:2<261:EEORIB>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOUTHERN ONTARIO STREAM; NEW-ZEALAND RIVER; BRITISH-COLUMBIA; DESERT STREAM; CARNATION CREEK; AQUATIC INSECTS; TUNDRA RIVER; DISTURBANCE; COMMUNITIES; RECOVERY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
100
Recensione:
Indirizzi per estratti:
Citazione:
G.J. Scrimgeour et al., "ECOLOGICAL EFFECTS OF RIVER ICE BREAK-UP - A REVIEW AND PERSPECTIVE", Freshwater Biology, 32(2), 1994, pp. 261-275

Abstract

1. Abiotic disturbances strongly modify spatial and temporal patternsof lotic ecosystem community structure and function. Such effects areproduced because disturbances alter organic matter, nutrient and contaminant dynamics and the distribution and abundance of bacterial, algal, macroinvertebrate and fish communities. 2. River ice break-up is a seasonal disturbance in rivers at high altitudes and latitudes world-wide and is characterized, in part, by large increases in current velocity, stage, water temperature, concentrations of suspended materials and substrate scouring. 3. These abiotic factors are likely to have important effects on primary producers, consumers, and food-web dynamics of river biota. Despite the potential importance of river ice break-upon community structure and function, detailed information describing the magnitude of their effects and underlying causal mechanisms is scarce. 4. The objective of this paper is to provide a hydrological and ecological review and perspective on the potential effects of ice break-up on lotic ecosystems. Specifically, the potential importance of break-up on water temperature, river sediments and geomorphology, riverine energy sources, contaminants, and its effects on river biota and food-web dynamics are evaluated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 21:58:11