1993
DOI: 10.1007/bf00007543
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Inter-relationships among demographic traits comprising amphipod production and turnover

Abstract: Hyalella azteca (Amphipoda) were sampled in eight Canadian Shield lakes, and the inter-relationships among life history traits were used to determine the sensitivity of production and turnover rates to demographic variation. Production was positively related to density and negatively related to both mortality and somatic growth. Turnover rates did not vary significantly with respect to any demographic traits. Studies should advance from simply documenting production to instead describing 'production ecology' i… Show more

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Cited by 4 publications
(3 citation statements)
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“…These reductions in abundance are notable because H. azteca can account for as much as 65% of fish diet (Jansen & Mackay, ; Vander Zanden & Vadeboncoeur, ). Hyalella azteca is also one of the most ubiquitous benthic invertebrates in freshwater systems (Lindeman & Momot, ; France, ), making any reduction in their abundances likely to influence entire food webs.…”
Section: Discussionmentioning
confidence: 99%
“…These reductions in abundance are notable because H. azteca can account for as much as 65% of fish diet (Jansen & Mackay, ; Vander Zanden & Vadeboncoeur, ). Hyalella azteca is also one of the most ubiquitous benthic invertebrates in freshwater systems (Lindeman & Momot, ; France, ), making any reduction in their abundances likely to influence entire food webs.…”
Section: Discussionmentioning
confidence: 99%
“…Hyalcila production in these lakes is highly correlated (r = 0.93; n = 8) with population density (France, 1993) and so is affected by sampling variability (cf. Waters, 1979).…”
Section: Methodsmentioning
confidence: 99%
“…Strong ( 24 ) also observed periodic mass mortalities in Hyalella populations, and noted that the source of the mass mortalities was not density dependent. Hyalella survival rates increased with increasing density in Ontario lakes, ( 41 ) which is counter to density compensation and suggests that protection from mortality is provided at high densities by predator saturation. Second, it might not have been appropriate to generalize the relation between abundance and brood size noted in data from Ontario lakes.…”
Section: Risks Of the Fifth Percentile Ssd‐based Criterion To A Momentioning
confidence: 99%