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Artificial nesting habitats as a conservation strategy for turtle populations experiencing global change

Integrative Zoology 2013年第2期8卷 209-221页

作者： John P.WNEK Walter F.BIEN Harold W.AVERY Department of Biology Drexel UniversityPhiladelphiaPennsylvaniaUSA

Diamondback terrapins(Malaclemys terrapin)inhabit estuaries in eastern USA and may tolerate salinity of seawater for short *** North American estuaries are adversely affected by anthropogenic impacts,such as pollution,dredging and invasion by non-native *** nesting areas have been altered or destroyed,causing terrapins to nest on roadsides and artificial islands made of dredged substrate from bottom *** by non-native plants may suppress development and reduce survival of *** Barnegat Bay,New Jersey,USA,there is a mosaic of natural and degraded terrapin nesting *** investigated the effects of dredge soil and shade on the hatching success of diamondback terrapins to determine whether nesting habitat could be increased by using dredged bottom *** year 1,unshaded nests in natural loamy-sand had the highest hatching success(55.2%),while nests in dredge soil produced no *** year 2,nests in unshaded loamy-sand had a hatching success of 85.3%,whereas those in dredge soil,aged 1 year,had a hatching success of 59.4%.Dredge soil improved as an incubation substrate after aging 1 year by the washout of *** temperatures were generally cool and produced mostly male *** dredge soil may provide suitable nesting substrates for diamondback terrapins if used after one year,and may be particularly beneficial if used for constructing islands that provide new nesting sites with reduced access of mammalian predators.

关键词： dredge estuarine turtles hatching success Malaclemys terrapin nesting ecology nest temperature nest substrate shade

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