Applying landscape ecology to conservation biology: Spatially explicit analysis reveals dispersal limits on threatened wetland gastropods

Niggebrugge, Karla; Durance, Isabelle; Watson, Alisa M.; Leuven, R.S.E.W.; Ormerod, Stephen James

doi:10.1016/j.biocon.2007.07.003

Cited by 21 publications

(16 citation statements)

References 31 publications

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“…To restore the degraded Zoige Marsh, we think that the first priority is to recover hydrology, and then vegetation, and finally fauna that have recently been considered indicators of successful ecological restoration (Kentula, 2000). In addition, since a major goal of protecting the crane, Grus nigricollis, could be carried out only when diverse habitats of the crane were meet, we also think that the marsh restoration should be conducted at the landscape level, as strongly suggested by several recent studies (Simenstad et al, 2006;Niggebrugge et al, 2007;Simmons et al, 2007). We propose that ecological engineering measures should be conducted first to restore the marsh hydrology and vegetation, and we also propose to control livestock population size to facilitate progressive successions of the ecosystem.…”

Section: Future Prospect For Ecological Restorationmentioning

confidence: 78%

Current status and future prospects of Zoige Marsh in Eastern Qinghai-Tibet Plateau

Xiang

Guo

et al. 2009

Ecological Engineering

155

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Section: Future Prospect For Ecological Restorationmentioning

confidence: 78%

Current status and future prospects of Zoige Marsh in Eastern Qinghai-Tibet Plateau

Xiang

Guo

et al. 2009

Ecological Engineering

155

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“…For the gene flow estimates, we only compared populations relatively similar to one another, and thus, we can also only interpret the number of migrants per generation as a relative rather than an absolute number of snails (Bossart & Prowell, 1998). Only when no water connections were present in our system, other dispersal vectors were likely to be of significance for the dispersal of snails (see also Niggebrugge et al, 2007). However, since many birds also fly between sites within the rice fields, this mode of dispersal may also contribute to the panmictic population in the rice fields, in addition to hydrochory.…”

Section: Passive Drifting In Flowing Water As Means Of Dispersal For mentioning

confidence: 99%

How did this snail get here? Several dispersal vectors inferred for an aquatic invasive species

et al. 2012

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SUMMARY1. How species reach and persist in isolated habitats remains an open question in many cases, especially for rapidly spreading invasive species. This is particularly true for temporary freshwater ponds, which can be remote and may dry out annually, but may still harbour high biodiversity. Persistence in such habitats depends on recurrent colonisation or species survival capacity, and ponds therefore provide an ideal system to investigate dispersal and connectivity. 2. Here, we test the hypothesis that the wide distributions and invasive potential of aquatic snails is due to their ability to exploit several dispersal vectors in different landscapes. We explored the population structure of Physa acuta (recent synonyms: Haitia acuta, Physella acuta, Pulmonata: Gastropoda), an invasive aquatic snail originating from North America, but established in temporary ponds in Doñ ana National Park, southern Spain. In this area, snails face land barriers when attempting to colonise other suitable habitat. 3. Genetic analyses using six microsatellite loci from 271 snails in 21 sites indicated that (i) geographically and hydrologically isolated snail populations in the park were genetically similar to a large snail population in rice fields more than 15 km away; (ii) these isolated ponds showed an isolation-by-distance pattern. This pattern broke down, however, for those ponds visited frequently by large mammals such as cattle, deer and wild boar; (iii) snail populations were panmictic in flooded and hydrologically connected rice fields. 4. These results support the notion that aquatic snails disperse readily by direct water connections in the flooded rice fields, can be carried by waterbirds flying between the rice fields and the park and may disperse between ponds within the park by attaching to large mammals. 5. The potential for aquatic snails such as Physa acuta to exploit several dispersal vectors may contribute to their wide distribution on various continents and their success as invasive species. We suggest that the interaction between different dispersal vectors, their relation to specific habitats and consequences at different geographic scales should be considered both when attempting to control invasive freshwater species and when protecting endangered species.

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“…in small ponds overgrown by rich vegetation, lakes and drainage ditches (Glöer & Meier-Brook 1998;Brauns et al 2008), as well as in highly eutrophic or polluted reservoirs (Beran 2002). Although it can be found in all types of wetlands (Niggebrugge et al 2007), the species is particularly associated with ponds. It avoids flowing waters, with the exception of lentic parts of rivers with water plants, where the water flow is slow.…”

Section: Introductionmentioning

confidence: 99%

Occurrence and morphological variability of Gyraulus crista (Gastropoda: Pulmonata: Planorbidae) on different types of substratum in woodland ponds

Spyra

Strzelec

2013

Biologia

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Gyraulus crista is often a dominant component of lentic freshwater snail communities because it may occur in densities of hundreds of individuals/m 2 across continents and in lentic water types. A study on the occurrence and conchological variability of the shell of G. crista was carried out on five different types of substrates in the anthropogenic woodland ponds at thirteen study sites. In order to answer the question of whether the existence of this species in different forms is affected by the quality of the inhabited substrates, various physico-chemical properties of the water, different bottom sediments and water level fluctuations, we examined the variation of forms across 5990 specimens of G. crista in woodland ponds. This research, which was supported by Redundancy Analysis (RDA), showed a highly significant association of G. c. spinulosus with leaf deposits and G. c. cristatus for T. latifolia remains. G. crista nautileus was mainly associated with T. latifolia and also with G. aquatica remains. They also showed no statistically significant relationship between the occurrence of particular conchological G. crista forms and different physico-chemical properties of water.

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Applying landscape ecology to conservation biology: Spatially explicit analysis reveals dispersal limits on threatened wetland gastropods

Cited by 21 publications

References 31 publications

Current status and future prospects of Zoige Marsh in Eastern Qinghai-Tibet Plateau

Current status and future prospects of Zoige Marsh in Eastern Qinghai-Tibet Plateau

How did this snail get here? Several dispersal vectors inferred for an aquatic invasive species

Occurrence and morphological variability of Gyraulus crista (Gastropoda: Pulmonata: Planorbidae) on different types of substratum in woodland ponds

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