1997
DOI: 10.1002/(sici)1099-1646(199703)13:2<129::aid-rrr431>3.0.co;2-s
|View full text |Cite
|
Sign up to set email alerts
|

Colorado river benthic ecology in Grand Canyon, Arizona, USA: dam, tributary and geomorphological influences

Abstract: The serial discontinuity concept (SDC; Ward and Stanford, in Ecology of River Systems, 1983) predicts that recovery of large regulated rivers over distance downstream from a dam is limited by relative tributary size; however, channel geomorphology may also influence the recovery process. We examined the spatial variation in water quality, benthic composition and ash‐free dry standing biomass (AFDM) among the bedrock‐defined geomorphological reaches in three turbidity segments of the Colorado River between Glen… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1

Citation Types

0
65
0

Year Published

1997
1997
2024
2024

Publication Types

Select...
6
1

Relationship

1
6

Authors

Journals

citations
Cited by 142 publications
(72 citation statements)
references
References 56 publications
0
65
0
Order By: Relevance
“…Collier and Lill (2008) observed an increase in diversity at main channel sites with distance down river in a large New Zealand watercourse, most likely as a consequence of interplay between habitat patchiness and successional and hydrogeomorphic processes influencing macroinvertebrate community. In the middle Chubut river basin where turbidity and flood disturbance were high, benthic density was low as found below a tributary of the Colorado River in arid Arizona (Shaver et al 1997, Stevens et al 1997. In contrast, the upper main river channel and its tributaries had a more abundant benthic fauna and twice the number of species found in the middle basin.…”
Section: Discussionmentioning
confidence: 94%
See 1 more Smart Citation
“…Collier and Lill (2008) observed an increase in diversity at main channel sites with distance down river in a large New Zealand watercourse, most likely as a consequence of interplay between habitat patchiness and successional and hydrogeomorphic processes influencing macroinvertebrate community. In the middle Chubut river basin where turbidity and flood disturbance were high, benthic density was low as found below a tributary of the Colorado River in arid Arizona (Shaver et al 1997, Stevens et al 1997. In contrast, the upper main river channel and its tributaries had a more abundant benthic fauna and twice the number of species found in the middle basin.…”
Section: Discussionmentioning
confidence: 94%
“…The interactive effects of basin features and land use changes on macroinvertebrates have been studied in headwater streams of the cordillera (Miserendino and Pizzolón 2004), and the impact of land desertification on invertebrate assemblages of rivers has been documented (Miserendino 2004(Miserendino , 2006. Although a large number of scientific papers consider the ecology of whole river systems in moderate-rainfall, temperate regions, river ecology in arid/semiarid areas remain largely unexplored (Wais 1990;Stevens et al 1997).…”
Section: Introductionmentioning
confidence: 99%
“…The first objective of our study was to assess seasonal and spatial variability in benthic community structure along a large river in the Central West Andes Mountains of Argentina. The study of relationships between invertebrate assemblages and environmental features is also an important community ecology theme and enhances knowledge about the functioning of rivers in arid zones, taking into account that the ecology of arid and semiarid streams remains relatively unexplored (Stevens et al, 1997). For this reason, the second main objective of our research was to find out whether physical and chemical variables affect distribution of benthic communities and whether they characterise the ecological distribution range of each species.…”
Section: Introductionmentioning
confidence: 99%
“…Hunting was permitted on the uppermost 24 km of the river in Glen Canyon National Recreation Area (except near Glen Canyon Dam and at Lees Ferry) during this study, but not in Grand Canyon. Additional climate and geographical information, and the history of flow regulation are discussed in Sellers and Hill (1974), Howard and Dolan (1981), Schmidt and Graf (1990), Marzolf (1991), and Stevens et al (1995Stevens et al ( , 1997.…”
Section: Study Site and Backgroundmentioning
confidence: 99%
“…Total AARE was only 114 and 113-fold greater in wide versus narrow reaches within the VT and UT turbidity segments, respectively (p INTRODUCTION Flow regulation is an ubiquitous modification of fluvial ecosystems (Ward and Stanford, 1979;Lillehammer and Saltveit, 1984;Gore and Petts, 1989) that can influence the distribution of riverine waterbirds (aquatic and semiaquatic avifauna) through modification of habitats and food resources. The natural channel geometry of large, complex rivers also affects waterbird food and habitat availability (Hupp 1988;Stevens et al, 1995Stevens et al, , 1997, but the influences of flow regulation versus natural channel geomorphology on river waterbird distribution have not been differentiated. Such information is important for evaluating the extent to which flow regulation alters the trophic structure of river ecosystems.…”
mentioning
confidence: 99%