HABITAT-QUALITY EFFECTS ON METAPOPULATION DYNAMICS IN GREATER WHITE-TOOTHED SHREWS,<i>CROCIDURA RUSSULA</i>

Jaquiéry, Julie; Guélat, Jérôme; Broquet, Thomas; Berset-Brändli, Laura; Pellegrini, Ester; Moresi, Ruben; Hirzel, Alexandre H.; Perrin, Nicolas

doi:10.1890/07-1833.1

Cited by 58 publications

(39 citation statements)

References 49 publications

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“…Patch size is often used as a surrogate for habitat quality (Franzén and Nilsson 2010) and this finding suggests that colonisation of vacant patches is influenced not only by propagule pressure and isolation but also by habitat quality of the vacant patch. Hence, these results are in agreement with results from other metapopulation studies linking colonisation with habitat quality (Franken and Hik 2004;Jaquiéry et al 2008;Franzén and Nilsson 2010). If habitat quality does indeed influence colonisation of ripped warrens, then it is perhaps surprising that there was no discernible relationship between warren recolonisation and the three soil radiometric variables used here.…”

Section: Discussionsupporting

confidence: 91%

Recolonisation of rabbit warrens following coordinated ripping programs in Victoria, south-eastern Australia

Ramsey

McPhee²,

Forsyth

et al. 2014

Wildl. Res.

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Context. Warren ripping has been demonstrated to be an effective tool for controlling rabbit populations. However, few studies have examined factors influencing the rate at which ripped warrens are likely to be recolonised (i.e. be re-opened).Aims. To examine factors influencing the recolonisation of ripped warrens by rabbits by using data collected on 555 warrens for up to 15 years following coordinated ripping programs at 12 sites in Victoria, south-eastern Australia.Methods. Warren-monitoring data (number of active and inactive warren entrances) were analysed using discrete-time survival analysis to determine the effects of warren-level and site-level covariates on the recolonisation of ripped warrens.Key results. Warren recolonisation was related to the distance between the ripped warren and the nearest active warren, the number of active entrances in the nearest warren, the initial number of active entrances in the ripped warren and the rabbit spotlight abundance index at the site. The probability of warren recolonisation was highest for ripped warrens within 1 km of an active warren and negligible beyond 3 km. The probability of warren recolonisation also increased by 22% for every increase in the rabbit spotlight count at the site by 10 rabbits km -1 .Conclusions. The recolonisation of ripped warrens was highly influenced by both the distance to, and size of, neighbouring active warrens. Larger warrens also appear to be preferentially recolonised compared with smaller warrens, suggesting that recolonisation of ripped areas may be related to habitat quality. The present results are consistent with ideas from classical metapopulation theory predicting that the rates of colonisation of vacant patches are dependent on both the proximity and size of the source population as well as the quality of habitat patches.Implications. Although coordinated warren ripping programs are effective at achieving long-term control of rabbits, their efficiency at maintaining low rabbit populations can be increased by adopting an adaptive monitoring program that incorporates warren size and the spatial relationships among warrens, and using this information to better target maintenance-control activities.

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Section: Discussionsupporting

confidence: 91%

Recolonisation of rabbit warrens following coordinated ripping programs in Victoria, south-eastern Australia

Ramsey

McPhee²,

Forsyth

et al. 2014

Wildl. Res.

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“…Hence, our results highlight the importance of habitat connectivity on species' distribution (see also e.g. Jaquiery et al, 2008;Driscoll et al, 2010).…”

Section: Determinants Of Patch Occupancy In Sympatrysupporting

confidence: 62%

Annoying neighbors: Multi-scale distribution determinants of two sympatric sibling species of birds

Guillaumet

Léotard

2015

Current Zoology

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We tested the role of interspecific competition in driving species distribution at multiple spatial scales using two sibling species of Galerida larks (G. cristata and G. theklae) in Morocco (sympatry), Balearic islands (G. theklae only) and Israel (G. cristata only). We first investigated regional-scale determinants by contrasting allopatric versus sympatric patterns in five distinct habitat types. We next focused on a single habitat used by both species, the coastal sand dunes. Dune quadrats were established along the Moroccan coast and completed by a quadrat in the nearest distinct landscape habitat. Poisson regressions were used to model Galerida counts together with ecological predictors as concerns the climate, topography, vegetation structure and soil granulometry. At the local scale, both species preferred grey dunes over white sand dunes, and both were negatively affected by the abundance of the congeneric species in the dune. However, we found that G. theklae tended to replace G. cristata in more arid sand dunes, even if the transition was not strictly clinal. Instead, the transition occurred when the surrounding landscape changed from coastal wetlands to bathas (grasslands with shrubs), highlighting the importance of habitat composition at the landscape scale. The fact that G. cristata used bathas in allopatry, but not in sympatry, suggested that the competitive environment contributed to determine sand dune occupancy. We suggest that landscape-level effects may be pivotal in explaining species distribution not only at the local scale, by affecting the pool of potential immigrants, but also at the regional scale, by contributing to species' range limit [Current Zoology 61 (1): [10][11][12][13][14][15][16][17][18][19][20][21][22] 2015].

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“…The whole body of research focusing on species distribution modeling is essentially concerned with spatially varying habitat quality-although often at a broader scale than those examined in fragmentation studies (but see Jaquiéry et al 2008 andDrielsma andFerrier 2009) and, therefore, the ''quality'' is often measured with broad surrogates (such as presence-absence data; but see Falcucci et al 2009 for incorporation of a demographic parameter such as mortality). If species distribution modeling is carried out at a scale where the configuration of habitat is likely to play an important role, more effort should be undertaken to measure (and model) the quality of habitat appropriately.…”

Section: Patch Use Studiesmentioning

confidence: 99%

The role of habitat quality in fragmented landscapes: a conceptual overview and prospectus for future research

2010

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There is increasing empirical evidence that the quality of habitat patches (determined by either habitat degradation or natural heterogeneity in the quality of habitat) plays an important role in determining species distribution patterns and in regulating spatial dynamics in fragmented landscapes. However, to date, most of the debate has focused on whether or not to include habitat variables in fragmentation studies, and we still lack general conclusions as well as standard and robust research approaches. In this paper we show how a weak conceptualization of "patch quality" and the inappropriate choice of target surrogate variables (e.g., density is often used as an indicator of patch quality) have mainly produced case-specific results, rather than general conclusions. We then identify weaknesses in the inclusion of habitat quality measurements within fragmentation studies. In particular, we focus on: (1) the lack of appropriate experimental design, outlining how few studies have actually included a gradient of habitat quality in their sample; (2) the lack of fundamental information provided (e.g., lack of standard outputs), which in turn hampers the possibility of carrying out meta-analyses. We finally synthesize available knowledge from empirical studies and highlight the different conceptual frameworks needed for patch occupancy versus patch use studies.

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HABITAT-QUALITY EFFECTS ON METAPOPULATION DYNAMICS IN GREATER WHITE-TOOTHED SHREWS,CROCIDURA RUSSULA

Cited by 58 publications

References 49 publications

Recolonisation of rabbit warrens following coordinated ripping programs in Victoria, south-eastern Australia

Recolonisation of rabbit warrens following coordinated ripping programs in Victoria, south-eastern Australia

Annoying neighbors: Multi-scale distribution determinants of two sympatric sibling species of birds

The role of habitat quality in fragmented landscapes: a conceptual overview and prospectus for future research

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