Comments on the Use of Time-Specific and Cohort Life Tables
In a recent exchange between Messier (1990) and Zammuto (1990), Messier (1990) questioned Zammuto's (1987) assumption that his populations of Columbian ground squirrels (Spermophilus columbianus) possessed stationary age distributions and also questioned the use of Zammuto and Sherman (1986) as...
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| Veröffentlicht in: | Ecology (Durham) 1993-10, Vol.74 (7), p.2164-2168 |
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| container_title | Ecology (Durham) |
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| creator | Menkens, George E. Boyce, Mark S. |
| description | In a recent exchange between Messier (1990) and Zammuto (1990), Messier (1990) questioned Zammuto's (1987) assumption that his populations of Columbian ground squirrels (Spermophilus columbianus) possessed stationary age distributions and also questioned the use of Zammuto and Sherman (1986) as lending indirect support of this assumption. Messier's (1990) comments focused on the potentially low power of the tests used by Zammuto and Sherman (1986) to conclude that, for a population of Belding's ground squirrels (S. beldingi), time- and cohort-specific life tables did not differ significantly. Messier (1990) did not, however, provide quantitative support for this criticism. We have reanalyzed some of the relevant data presented by Zammuto and Sherman (1986) and present the results here to clarify the issue. |
| doi_str_mv | 10.2307/1940861 |
| format | Article |
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Messier's (1990) comments focused on the potentially low power of the tests used by Zammuto and Sherman (1986) to conclude that, for a population of Belding's ground squirrels (S. beldingi), time- and cohort-specific life tables did not differ significantly. Messier (1990) did not, however, provide quantitative support for this criticism. We have reanalyzed some of the relevant data presented by Zammuto and Sherman (1986) and present the results here to clarify the issue.</description><identifier>ISSN: 0012-9658</identifier><identifier>EISSN: 1939-9170</identifier><identifier>DOI: 10.2307/1940861</identifier><identifier>CODEN: ECGYAQ</identifier><language>eng</language><publisher>Washington, DC: The Ecological Society of America</publisher><subject>Age ; Age structure ; Animal, plant and microbial ecology ; Biological and medical sciences ; Breeding ; Ecological life histories ; Fundamental and applied biological sciences. Psychology ; General aspects. 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Messier's (1990) comments focused on the potentially low power of the tests used by Zammuto and Sherman (1986) to conclude that, for a population of Belding's ground squirrels (S. beldingi), time- and cohort-specific life tables did not differ significantly. Messier (1990) did not, however, provide quantitative support for this criticism. We have reanalyzed some of the relevant data presented by Zammuto and Sherman (1986) and present the results here to clarify the issue.</description><subject>Age</subject><subject>Age structure</subject><subject>Animal, plant and microbial ecology</subject><subject>Biological and medical sciences</subject><subject>Breeding</subject><subject>Ecological life histories</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General aspects. 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Psychology</topic><topic>General aspects. Techniques</topic><topic>Ground squirrels</topic><topic>Life tables</topic><topic>Litter size</topic><topic>Methods and techniques (sampling, tagging, trapping, modelling...)</topic><topic>Notes and Comments</topic><topic>Null hypothesis</topic><topic>Sample size</topic><topic>Spermophilus beldingi</topic><topic>Young animals</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Menkens, George E.</creatorcontrib><creatorcontrib>Boyce, Mark S.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Periodicals Index Online Segment 03</collection><collection>Periodicals Index Online Segment 04</collection><collection>Periodicals Index Online Segment 29</collection><collection>Periodicals Index Online</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - West</collection><collection>Primary Sources Access (Plan D) - International</collection><collection>Primary Sources Access & Build (Plan A) - MEA</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Midwest</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Northeast</collection><collection>Primary Sources Access (Plan D) - Southeast</collection><collection>Primary Sources Access (Plan D) - North Central</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Southeast</collection><collection>Primary Sources Access (Plan D) - South Central</collection><collection>Primary Sources Access & Build (Plan A) - UK / I</collection><collection>Primary Sources Access (Plan D) - Canada</collection><collection>Primary Sources Access (Plan D) - EMEALA</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - North Central</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - South Central</collection><collection>Primary Sources Access & Build (Plan A) - International</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - International</collection><collection>Primary Sources Access (Plan D) - West</collection><collection>Periodicals Index Online Segments 1-50</collection><collection>Primary Sources Access (Plan D) - APAC</collection><collection>Primary Sources Access (Plan D) - Midwest</collection><collection>Primary Sources Access (Plan D) - MEA</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - Canada</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - UK / I</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - EMEALA</collection><collection>Primary Sources Access & Build (Plan A) - APAC</collection><collection>Primary Sources Access & Build (Plan A) - Canada</collection><collection>Primary Sources Access & Build (Plan A) - West</collection><collection>Primary Sources Access & Build (Plan A) - EMEALA</collection><collection>Primary Sources Access (Plan D) - Northeast</collection><collection>Primary Sources Access & Build (Plan A) - Midwest</collection><collection>Primary Sources Access & Build (Plan A) - North Central</collection><collection>Primary Sources Access & Build (Plan A) - Northeast</collection><collection>Primary Sources Access & Build (Plan A) - South Central</collection><collection>Primary Sources Access & Build (Plan A) - Southeast</collection><collection>Primary Sources Access (Plan D) - UK / I</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - APAC</collection><collection>Primary Sources Access—Foundation Edition (Plan E) - MEA</collection><collection>Ecology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Ecology (Durham)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Menkens, George E.</au><au>Boyce, Mark S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Comments on the Use of Time-Specific and Cohort Life Tables</atitle><jtitle>Ecology (Durham)</jtitle><date>1993-10</date><risdate>1993</risdate><volume>74</volume><issue>7</issue><spage>2164</spage><epage>2168</epage><pages>2164-2168</pages><issn>0012-9658</issn><eissn>1939-9170</eissn><coden>ECGYAQ</coden><abstract>In a recent exchange between Messier (1990) and Zammuto (1990), Messier (1990) questioned Zammuto's (1987) assumption that his populations of Columbian ground squirrels (Spermophilus columbianus) possessed stationary age distributions and also questioned the use of Zammuto and Sherman (1986) as lending indirect support of this assumption. Messier's (1990) comments focused on the potentially low power of the tests used by Zammuto and Sherman (1986) to conclude that, for a population of Belding's ground squirrels (S. beldingi), time- and cohort-specific life tables did not differ significantly. Messier (1990) did not, however, provide quantitative support for this criticism. We have reanalyzed some of the relevant data presented by Zammuto and Sherman (1986) and present the results here to clarify the issue.</abstract><cop>Washington, DC</cop><pub>The Ecological Society of America</pub><doi>10.2307/1940861</doi><tpages>5</tpages></addata></record> |
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| source | Periodicals Index Online; Jstor Complete Legacy |
| subjects | Age Age structure Animal, plant and microbial ecology Biological and medical sciences Breeding Ecological life histories Fundamental and applied biological sciences. Psychology General aspects. Techniques Ground squirrels Life tables Litter size Methods and techniques (sampling, tagging, trapping, modelling...) Notes and Comments Null hypothesis Sample size Spermophilus beldingi Young animals |
| title | Comments on the Use of Time-Specific and Cohort Life Tables |
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