Translocation trials confirm specific factors affecting the establishment of three endangered plant species

Jusaitis, M.

doi:10.1111/j.1442-8903.2005.00220.x

Cited by 53 publications

(28 citation statements)

References 48 publications

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“…Despite overall broad habitat similarity, the study species thus show marked ecological originality in terms of their precise ecological niche in peripheral populations. This result illustrates very clearly the importance of making explicit descriptions of fine-scale environmental conditions where plants grow, instead of simply identifying local climatic conditions and broad habitat types, if we are to correctly identify the ecological niche of plant species (Hall et al 1997, Jusaitis 2005, Miller and Hobbs 2007. Additionally, we found no evidence of enhanced differentiation of the micro-niche among central and peripheral populations for species that occurred in different broad-habitat types in central and peripheral populations (Supplementary material Appendix 5).…”

Section: Ecological Originality Of Peripheral Populationsmentioning

confidence: 98%

“…Broad-scale characterisation of their habitat is of limited use in guiding such projects. Hence, as Jusaitis (2005) pleaded, careful attention should be paid to the 'exact placement' of such trials in natural areas.…”

Section: Conservation Value Of Peripheral Populationsmentioning

confidence: 99%

“…In fact, broad habitat units or vegetation types do not provide the correct scale on which to identify the precise ecological niche of plants (Hall et al 1997, Miller andHobbs 2007), which requires explicit descriptions of the suite of resources and environmental conditions that permit plant establishment, growth and reproduction. The sessile life form of plants reinforces this need to identify the niche where plants grow because of the potential effect of highly localised ecological variation on plant performance (Chapin et al 1987, Lönn and Prentice 2002, Jusaitis 2005. Empirical comparison of the ecological niche of plants in central and peripheral populations have revealed differences for individual species, but no clear general pattern, be it for abiotic factors (Farris and Schaal 1983, Duffy et al 2009, Leuschner et al 2009, Wagner et al 2011, competition and community composition (Carter andPrince 1985, Alexander et al 2007) or biotic interactions (Bruelheide andScheidel 1999, Castilla et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Ecological niche differentiation in peripheral populations: a comparative analysis of eleven Mediterranean plant species

et al. 2018

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The ‘central‐peripheral’ hypothesis has provided a baseline for many studies of population dynamics and genetic variability at species distribution limits. Although peripheral populations are often assumed to occur in ecologically marginal conditions, little is known about whether they effectively occur in a distinct ecological niche. A cross‐taxa analysis of 11 Mediterranean vascular plants were studied. We quantified variation in the ecological niche between populations at the northern range limits of species in Mediterranean France and those in the central part of the distribution in continental Spain or Italy in 2013–2014. We analyzed both the macro‐ecological niche where populations occur in terms of broad habitat and altitudinal range and the micro‐ecological niche where individual plants grow in terms of soil and structural biotic and abiotic characteristics. Most species occur in a single broad habitat type common to central and peripheral populations and have a narrower altitudinal range in the latter. In contrast, for the micro‐ecological niche we detected marked variation in several niche parameters among central and peripheral populations. Although many differences are species‐specific some are common to several species. We found a trend towards narrower micro‐niche breadth in peripheral populations. Our results illustrate the importance of studying the precise ecological characteristics where plants grow and the pertinence of a multi‐species approach to correctly assess niche variation. The ecological originality of peripheral populations underlines their evolutionary potential and conservation significance.

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Section: Ecological Originality Of Peripheral Populationsmentioning

confidence: 98%

Section: Conservation Value Of Peripheral Populationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ecological niche differentiation in peripheral populations: a comparative analysis of eleven Mediterranean plant species

et al. 2018

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“…Jusaitis & Polomka 2008) and the effects of threatening processes such as weeds and grazing on success (e.g. Jusaitis et al 2004;Jusaitis 2005;Scade et al 2006). Experimental releases should be based upon clear hypotheses and associated treatments or contrasts to test the hypothesis.…”

Section: Integration Of a Designed Experimental Frameworkmentioning

confidence: 99%

An assessment of scientific approaches towards species relocations in Australia

Sheean¹,

Manning²,

Lindenmayer³

2011

Austral Ecology

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Species relocation programmes are increasingly performed with the intention of establishing a selfsustaining population of threatened or declining native species. However, the use of experimental quantitative approaches in species relocation programmes is still relatively uncommon, despite a number of international studies recommending clear guidelines and standards. This paper evaluates species relocation programmes conducted within Australia to assess how programmes performed in relation to such standards. The search techniques identified 54 species relocation programmes, the majority of which were reintroductions (52%) and supplementations (30%). Only 25 (46%) of the species relocation programmes claimed success, with a lack of effective predator control recognized as contributing to the failure of 14 programmes. There was considerable variation in the quality of species relocation programmes in relation to key features such as whether the programme integrated experimental approaches with testable hypotheses, whether there were explicit statements of criteria for success, whether suitable habitat was identified for the release site and whether long-term monitoring was conducted. We propose guidelines to improve scientific rigour and success rates of species relocation programmes.

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“…The goal of restoration is to recover declining populations and to restore their evolutionary potential in a long-term, self-sustaining manner [4],[5],[6],[7]. This requires the selection of sites with ecological characteristics corresponding to the needs of the species [4],[8],[7],[9]. Restoration plans usually involve the restoration of the regional viability of a species through an increase in population size and genetic diversity [10],[11].…”

Section: Introductionmentioning

confidence: 99%

Mixing Plants from Different Origins to Restore a Declining Population: Ecological Outcomes and Local Perceptions 10 Years Later

Maurice

Abdelkrim²,

Cisel³

et al. 2013

PLoS ONE

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Populations of the Large-flowered Sandwort (Arenaria grandiflora L.) in the Fontainebleau forest (France) have declined rapidly during the last century. Despite the initiation of a protection program in 1991, less than twenty individuals remained by the late 1990s. The low fitness of these last plants, which is likely associated with genetic disorders and inbreeding depression, highlighted the need for the introduction of non-local genetic material to increase genetic diversity and thus restore Fontainebleau populations. Consequently, A. grandiflora was introduced at three distant sites in the Fontainebleau forest in 1999. Each of these populations was composed of an identical mix of individuals of both local and non-local origin that were obtained through in vitro multiplication. After establishment, the population status (number of individuals, diameter of the plants, and number of flowers) of the introduced populations was monitored. At present, two populations (one of which is much larger than the other) persist, while the third one became extinct in 2004. Analyses of the ecological parameters of the introduction sites indicated that differences in soil pH and moisture might have contributed to the differences in population dynamics. This introduction plan and its outcome attracted interest of local community, with those who supported the plan and regarded its 10-year result as a biological success (i.e., persistent populations were created), but also those who expressed reservations or disapproval of the plan and its outcome. To understand this controversy, a sociological study involving 27 semi-structured interviews was carried out. From these interviews emerged three areas of controversy: alteration of the identity of the plant, alteration of the identity of its territory, and the biological and ethical consequences of the techniques used for the experimental conservation.

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Translocation trials confirm specific factors affecting the establishment of three endangered plant species

Cited by 53 publications

References 48 publications

Ecological niche differentiation in peripheral populations: a comparative analysis of eleven Mediterranean plant species

Ecological niche differentiation in peripheral populations: a comparative analysis of eleven Mediterranean plant species

An assessment of scientific approaches towards species relocations in Australia

Mixing Plants from Different Origins to Restore a Declining Population: Ecological Outcomes and Local Perceptions 10 Years Later

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