51813_Sturgeon biodioversity an.PDF

Table 1.Specificalternatives identified as potentiallybeneficial to theconservation.productivity. o rdiversity of sturgeon or paddlefish
populations in asurvey ofsturgeon andpaddlefishbiologiststhroughoutNorthAmerica. Eachbiologistdeveloped alist ofalternatives
and rankedthemaccording to potential benefit.

Ca t egory Numberresponses Numberimplemented Mean rank
Specificresponse

Habitats
General(e.g.protect or restorecriticalhabitat) 59 18 1.9
Flow(e.g.restorehydrograph) 30 6 1.8
Spawninghabitat(e.g.protect)^1510 2.9
Dredging orchannelization 9 4 2.4
Controlpredators 3 0 5.7
Rearing habiiat 2 1 3.0
Constructspawninghabitat 1 I 5.0
Partial sizespecific(e.g.protect broodstock) 37 31 2.2
General(e.g.control harvest) 32 25 2.6
Completeclosure 17 11 1.8
Enforcement(e.g.poaching and caviarsales) 14 7 3.0

Bycatchcontrol 2 0 3.5

Aquaculture 18 5 2.4

Life history 15 6 2.4

Habitatrequirement 24 5 2.6

Reproduction 9 4 2.2

Monitoring 3 2 2.3

Pollution 3 0 2.3

Passage 1 0 3.0

General 29 16 2.5

To historicranges 17 7 2.3

Fingerlings 5 5 2.2

Establish cryogenic stockreservoirs 4 3 2.5

Young of the year 1 1 2.0

Use as reservoir forgenetic stock 1 1 2.0

Improvepassage atdams 16 4 3.0

R u n of the river-operations 6 6 1.8

Dams 3 0 3.0

Harvest

Commercial closure 10 5 1.8

Research

Stockassessment 20 6 2.9

Genetics 17 6 3.1

General 9 4 3.6

Culture stocking

Passage

Eliminate dams 12 1 1.7

General 2 I 2.5

General 19 5 3.1

Con taminan ts 8 1 4.1

Sediments 5 2 2.8

Pollution

Nutrient(e.g.feedlotrunoff) 2 2 3.5

General(e.g.coordinate interstateefforts) 13 8 2.1

Listing/legalprotection 9 7 2.0

Recoveryplan 4 4 3.0

Managementplan 4 1 3.7

Planning

Information and education

Publicoutreach 15 5 3.I

General 7 2 4.0