EsturgeonV1, PascalFrancis, Corpus, bibRecord, 000349

A theoretical study of river fragmentation by dams and its effects on white sturgeon populations

Identifieur interne : 000349 ( PascalFrancis/Corpus ); précédent : 000348; suivant : 000350

A theoretical study of river fragmentation by dams and its effects on white sturgeon populations

Auteurs : Henriette I. Jager ; James A. Chandler ; Kenneth B. Lepla ; Webb Van Winkle

Source :

Environmental biology of fishes [ 0378-1909 ] ; 2001.

RBID : Pascal:01-0258604

Descripteurs français

Pascal (Inist)
- Migration animale, Cours eau, Barrage, Bassin retenue, Lac artificiel, Diversité génétique, Démographie, Modèle simulation, Métapopulation, Gestion population, Etats Unis, Fragmentation, Habitat, Acipenser transmontanus, Rivière Columbia, Espèce anadrome, Rivière Snake.

English descriptors

KwdEn :
- Acipenser transmontanus, Anadromous species, Animal migration, Artificial lake, Dam, Demography, Fragmentation, Genetic diversity, Habitat, Impoundment, Metapopulation, Population management, Simulation model, Snake River, Stream, United States.

Abstract

Most of the world's large rivers are fragmented by dams. Fragmentation of the river ecosystem alters migration patterns among fish populations and converts free-flowing river to reservoir habitat. In this study, we used an individual-based genetic metapopulation model to study the effects of fragmentation on the population viability and genetic diversity of a large-river fish, the white sturgeon, Acipenser transmontanus. In the first of two simulation experiments, we fragmented a 200 km river reach by building 1 to 20 virtual dams. Increased fragmentation produced an exponential decline in the likelihood of persistence, but no extinction threshold to suggest a minimum viable length of river. Compounding isolation with the loss of free-flowing habitat did not further reduce viability until free-flowing habitat was nearly eliminated, at which point extinction was certain. Genetic diversity within (among) populations decreased (increased) as we built' the first several dams. Adding more dams caused the number of persisting populations to decline and eroded genetic diversity within and among populations. Our second simulation experiment evaluated the effects of different levels of upstream and downstream migration between river segments. The results of these migration experiments highlighted the importance of balanced migration rates. We found that extinction risk was high for populations linked by high downstream, and low upstream, migration rates, as is often the case in impounded rivers. Our results support the view that migration patterns will play a significant role in determining the viability of riverine fishes, such as the white sturgeon, in river ecosystems fragmented by dams.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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C01	`01`		`ENG`	@0 Most of the world's large rivers are fragmented by dams. Fragmentation of the river ecosystem alters migration patterns among fish populations and converts free-flowing river to reservoir habitat. In this study, we used an individual-based genetic metapopulation model to study the effects of fragmentation on the population viability and genetic diversity of a large-river fish, the white sturgeon, Acipenser transmontanus. In the first of two simulation experiments, we fragmented a 200 km river reach by building 1 to 20 virtual dams. Increased fragmentation produced an exponential decline in the likelihood of persistence, but no extinction threshold to suggest a minimum viable length of river. Compounding isolation with the loss of free-flowing habitat did not further reduce viability until free-flowing habitat was nearly eliminated, at which point extinction was certain. Genetic diversity within (among) populations decreased (increased) as we built' the first several dams. Adding more dams caused the number of persisting populations to decline and eroded genetic diversity within and among populations. Our second simulation experiment evaluated the effects of different levels of upstream and downstream migration between river segments. The results of these migration experiments highlighted the importance of balanced migration rates. We found that extinction risk was high for populations linked by high downstream, and low upstream, migration rates, as is often the case in impounded rivers. Our results support the view that migration patterns will play a significant role in determining the viability of riverine fishes, such as the white sturgeon, in river ecosystems fragmented by dams.
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C03	`02`	`X`	`SPA`	`@0 Curso agua @5 02`
C03	`03`	`X`	`FRE`	`@0 Barrage @5 03`
C03	`03`	`X`	`ENG`	`@0 Dam @5 03`
C03	`03`	`X`	`SPA`	`@0 Presa @5 03`
C03	`04`	`X`	`FRE`	`@0 Bassin retenue @5 04`
C03	`04`	`X`	`ENG`	`@0 Impoundment @5 04`
C03	`04`	`X`	`SPA`	`@0 Presa retención @5 04`
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C03	`08`	`X`	`SPA`	`@0 Modelo simulación @5 08`
C03	`09`	`X`	`FRE`	`@0 Métapopulation @5 09`
C03	`09`	`X`	`ENG`	`@0 Metapopulation @5 09`
C03	`09`	`X`	`SPA`	`@0 Metapoblación @5 09`
C03	`10`	`X`	`FRE`	`@0 Gestion population @5 10`
C03	`10`	`X`	`ENG`	`@0 Population management @5 10`
C03	`10`	`X`	`SPA`	`@0 Gestión población @5 10`
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C03	`14`	`X`	`FRE`	`@0 Acipenser transmontanus @2 NS @5 55`
C03	`14`	`X`	`ENG`	`@0 Acipenser transmontanus @2 NS @5 55`
C03	`14`	`X`	`SPA`	`@0 Acipenser transmontanus @2 NS @5 55`
C03	`15`	`X`	`FRE`	`@0 Rivière Columbia @2 NG @4 INC @5 89`
C03	`16`	`X`	`FRE`	`@0 Espèce anadrome @4 CD @5 96`
C03	`16`	`X`	`ENG`	`@0 Anadromous species @4 CD @5 96`
C03	`17`	`X`	`FRE`	`@0 Rivière Snake @2 NG @4 CD @5 97`
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N21				`@1 176`

Format Inist (serveur)

NO :	PASCAL 01-0258604 INIST
ET :	A theoretical study of river fragmentation by dams and its effects on white sturgeon populations
AU :	JAGER (Henriette I.); CHANDLER (James A.); LEPLA (Kenneth B.); VAN WINKLE (Webb)
AF :	Environmental Sciences Division, P.O. Box 2008, Oak Ridge National Laboratory/Oak Ridge, TN 37831-6036/Etats-Unis (1 aut.); Aquatic Section, Environmental Affairs, Idaho Power Co./Boise, ID 83702/Etats-Unis (2 aut., 3 aut.)
DT :	Publication en série; Niveau analytique
SO :	Environmental biology of fishes; ISSN 0378-1909; Coden EBFID3; Pays-Bas; Da. 2001; Vol. 60; No. 4; Pp. 347-361; Bibl. 1 p.3/4
LA :	Anglais
EA :	Most of the world's large rivers are fragmented by dams. Fragmentation of the river ecosystem alters migration patterns among fish populations and converts free-flowing river to reservoir habitat. In this study, we used an individual-based genetic metapopulation model to study the effects of fragmentation on the population viability and genetic diversity of a large-river fish, the white sturgeon, Acipenser transmontanus. In the first of two simulation experiments, we fragmented a 200 km river reach by building 1 to 20 virtual dams. Increased fragmentation produced an exponential decline in the likelihood of persistence, but no extinction threshold to suggest a minimum viable length of river. Compounding isolation with the loss of free-flowing habitat did not further reduce viability until free-flowing habitat was nearly eliminated, at which point extinction was certain. Genetic diversity within (among) populations decreased (increased) as we built' the first several dams. Adding more dams caused the number of persisting populations to decline and eroded genetic diversity within and among populations. Our second simulation experiment evaluated the effects of different levels of upstream and downstream migration between river segments. The results of these migration experiments highlighted the importance of balanced migration rates. We found that extinction risk was high for populations linked by high downstream, and low upstream, migration rates, as is often the case in impounded rivers. Our results support the view that migration patterns will play a significant role in determining the viability of riverine fishes, such as the white sturgeon, in river ecosystems fragmented by dams.
CC :	002A14D02C
FD :	Migration animale; Cours eau; Barrage; Bassin retenue; Lac artificiel; Diversité génétique; Démographie; Modèle simulation; Métapopulation; Gestion population; Etats Unis; Fragmentation; Habitat; Acipenser transmontanus; Rivière Columbia; Espèce anadrome; Rivière Snake
FG :	Amérique du Nord; Amérique; Milieu eau douce; Facteur milieu; Pisces; Vertebrata; Acipenseridae
ED :	Animal migration; Stream; Dam; Impoundment; Artificial lake; Genetic diversity; Demography; Simulation model; Metapopulation; Population management; United States; Fragmentation; Habitat; Acipenser transmontanus; Anadromous species; Snake River
EG :	North America; America; Freshwater environment; Environmental factor; Pisces; Vertebrata
SD :	Migración animal; Curso agua; Presa; Presa retención; Lago artificial; Diversidad genética; Demografía; Modelo simulación; Metapoblación; Gestión población; Estados Unidos; Fragmentación; Habitat; Acipenser transmontanus
LO :	INIST-17564.354000095137800030
ID :	01-0258604

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Pascal:01-0258604

Le document en format XML

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<front><div type="abstract" xml:lang="en">Most of the world's large rivers are fragmented by dams. Fragmentation of the river ecosystem alters migration patterns among fish populations and converts free-flowing river to reservoir habitat. In this study, we used an individual-based genetic metapopulation model to study the effects of fragmentation on the population viability and genetic diversity of a large-river fish, the white sturgeon, Acipenser transmontanus. In the first of two simulation experiments, we fragmented a 200 km river reach by building 1 to 20 virtual dams. Increased fragmentation produced an exponential decline in the likelihood of persistence, but no extinction threshold to suggest a minimum viable length of river. Compounding isolation with the loss of free-flowing habitat did not further reduce viability until free-flowing habitat was nearly eliminated, at which point extinction was certain. Genetic diversity within (among) populations decreased (increased) as we built' the first several dams. Adding more dams caused the number of persisting populations to decline and eroded genetic diversity within and among populations. Our second simulation experiment evaluated the effects of different levels of upstream and downstream migration between river segments. The results of these migration experiments highlighted the importance of balanced migration rates. We found that extinction risk was high for populations linked by high downstream, and low upstream, migration rates, as is often the case in impounded rivers. Our results support the view that migration patterns will play a significant role in determining the viability of riverine fishes, such as the white sturgeon, in river ecosystems fragmented by dams.</div>
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<fC01 i1="01" l="ENG"><s0>Most of the world's large rivers are fragmented by dams. Fragmentation of the river ecosystem alters migration patterns among fish populations and converts free-flowing river to reservoir habitat. In this study, we used an individual-based genetic metapopulation model to study the effects of fragmentation on the population viability and genetic diversity of a large-river fish, the white sturgeon, Acipenser transmontanus. In the first of two simulation experiments, we fragmented a 200 km river reach by building 1 to 20 virtual dams. Increased fragmentation produced an exponential decline in the likelihood of persistence, but no extinction threshold to suggest a minimum viable length of river. Compounding isolation with the loss of free-flowing habitat did not further reduce viability until free-flowing habitat was nearly eliminated, at which point extinction was certain. Genetic diversity within (among) populations decreased (increased) as we built' the first several dams. Adding more dams caused the number of persisting populations to decline and eroded genetic diversity within and among populations. Our second simulation experiment evaluated the effects of different levels of upstream and downstream migration between river segments. The results of these migration experiments highlighted the importance of balanced migration rates. We found that extinction risk was high for populations linked by high downstream, and low upstream, migration rates, as is often the case in impounded rivers. Our results support the view that migration patterns will play a significant role in determining the viability of riverine fishes, such as the white sturgeon, in river ecosystems fragmented by dams.</s0>
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<fC03 i1="03" i2="X" l="FRE"><s0>Barrage</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Dam</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Presa</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Bassin retenue</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Impoundment</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Presa retención</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Lac artificiel</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Artificial lake</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA"><s0>Lago artificial</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Diversité génétique</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Genetic diversity</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Diversidad genética</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Démographie</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Demography</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Demografía</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Modèle simulation</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Simulation model</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Modelo simulación</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Métapopulation</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Metapopulation</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Metapoblación</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Gestion population</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Population management</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Gestión población</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Etats Unis</s0>
<s2>NG</s2>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>United States</s0>
<s2>NG</s2>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Estados Unidos</s0>
<s2>NG</s2>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Fragmentation</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Fragmentation</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Fragmentación</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Habitat</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG"><s0>Habitat</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA"><s0>Habitat</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Acipenser transmontanus</s0>
<s2>NS</s2>
<s5>55</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Acipenser transmontanus</s0>
<s2>NS</s2>
<s5>55</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA"><s0>Acipenser transmontanus</s0>
<s2>NS</s2>
<s5>55</s5>
</fC03>
<fC03 i1="15" i2="X" l="FRE"><s0>Rivière Columbia</s0>
<s2>NG</s2>
<s4>INC</s4>
<s5>89</s5>
</fC03>
<fC03 i1="16" i2="X" l="FRE"><s0>Espèce anadrome</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="16" i2="X" l="ENG"><s0>Anadromous species</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="17" i2="X" l="FRE"><s0>Rivière Snake</s0>
<s2>NG</s2>
<s4>CD</s4>
<s5>97</s5>
</fC03>
<fC03 i1="17" i2="X" l="ENG"><s0>Snake River</s0>
<s2>NG</s2>
<s4>CD</s4>
<s5>97</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE"><s0>Amérique du Nord</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="X" l="ENG"><s0>North America</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="01" i2="X" l="SPA"><s0>America del norte</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="X" l="FRE"><s0>Amérique</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="X" l="ENG"><s0>America</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="02" i2="X" l="SPA"><s0>America</s0>
<s2>NG</s2>
</fC07>
<fC07 i1="03" i2="X" l="FRE"><s0>Milieu eau douce</s0>
<s5>17</s5>
</fC07>
<fC07 i1="03" i2="X" l="ENG"><s0>Freshwater environment</s0>
<s5>17</s5>
</fC07>
<fC07 i1="03" i2="X" l="SPA"><s0>Medio agua dulce</s0>
<s5>17</s5>
</fC07>
<fC07 i1="04" i2="X" l="FRE"><s0>Facteur milieu</s0>
<s5>18</s5>
</fC07>
<fC07 i1="04" i2="X" l="ENG"><s0>Environmental factor</s0>
<s5>18</s5>
</fC07>
<fC07 i1="04" i2="X" l="SPA"><s0>Factor medio</s0>
<s5>18</s5>
</fC07>
<fC07 i1="05" i2="X" l="FRE"><s0>Pisces</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="05" i2="X" l="ENG"><s0>Pisces</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="05" i2="X" l="SPA"><s0>Pisces</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="06" i2="X" l="FRE"><s0>Vertebrata</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="06" i2="X" l="ENG"><s0>Vertebrata</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="06" i2="X" l="SPA"><s0>Vertebrata</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="07" i2="X" l="FRE"><s0>Acipenseridae</s0>
<s2>NS</s2>
<s4>INC</s4>
<s5>70</s5>
</fC07>
<fN21><s1>176</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 01-0258604 INIST</NO>
<ET>A theoretical study of river fragmentation by dams and its effects on white sturgeon populations</ET>
<AU>JAGER (Henriette I.); CHANDLER (James A.); LEPLA (Kenneth B.); VAN WINKLE (Webb)</AU>
<AF>Environmental Sciences Division, P.O. Box 2008, Oak Ridge National Laboratory/Oak Ridge, TN 37831-6036/Etats-Unis (1 aut.); Aquatic Section, Environmental Affairs, Idaho Power Co./Boise, ID 83702/Etats-Unis (2 aut., 3 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Environmental biology of fishes; ISSN 0378-1909; Coden EBFID3; Pays-Bas; Da. 2001; Vol. 60; No. 4; Pp. 347-361; Bibl. 1 p.3/4</SO>
<LA>Anglais</LA>
<EA>Most of the world's large rivers are fragmented by dams. Fragmentation of the river ecosystem alters migration patterns among fish populations and converts free-flowing river to reservoir habitat. In this study, we used an individual-based genetic metapopulation model to study the effects of fragmentation on the population viability and genetic diversity of a large-river fish, the white sturgeon, Acipenser transmontanus. In the first of two simulation experiments, we fragmented a 200 km river reach by building 1 to 20 virtual dams. Increased fragmentation produced an exponential decline in the likelihood of persistence, but no extinction threshold to suggest a minimum viable length of river. Compounding isolation with the loss of free-flowing habitat did not further reduce viability until free-flowing habitat was nearly eliminated, at which point extinction was certain. Genetic diversity within (among) populations decreased (increased) as we built' the first several dams. Adding more dams caused the number of persisting populations to decline and eroded genetic diversity within and among populations. Our second simulation experiment evaluated the effects of different levels of upstream and downstream migration between river segments. The results of these migration experiments highlighted the importance of balanced migration rates. We found that extinction risk was high for populations linked by high downstream, and low upstream, migration rates, as is often the case in impounded rivers. Our results support the view that migration patterns will play a significant role in determining the viability of riverine fishes, such as the white sturgeon, in river ecosystems fragmented by dams.</EA>
<CC>002A14D02C</CC>
<FD>Migration animale; Cours eau; Barrage; Bassin retenue; Lac artificiel; Diversité génétique; Démographie; Modèle simulation; Métapopulation; Gestion population; Etats Unis; Fragmentation; Habitat; Acipenser transmontanus; Rivière Columbia; Espèce anadrome; Rivière Snake</FD>
<FG>Amérique du Nord; Amérique; Milieu eau douce; Facteur milieu; Pisces; Vertebrata; Acipenseridae</FG>
<ED>Animal migration; Stream; Dam; Impoundment; Artificial lake; Genetic diversity; Demography; Simulation model; Metapopulation; Population management; United States; Fragmentation; Habitat; Acipenser transmontanus; Anadromous species; Snake River</ED>
<EG>North America; America; Freshwater environment; Environmental factor; Pisces; Vertebrata</EG>
<SD>Migración animal; Curso agua; Presa; Presa retención; Lago artificial; Diversidad genética; Demografía; Modelo simulación; Metapoblación; Gestión población; Estados Unidos; Fragmentación; Habitat; Acipenser transmontanus</SD>
<LO>INIST-17564.354000095137800030</LO>
<ID>01-0258604</ID>
</server>
</inist>
</record>

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A theoretical study of river fragmentation by dams and its effects on white sturgeon populations

A theoretical study of river fragmentation by dams and its effects on white sturgeon populations

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