Inferring population and metapopulation dynamics of Liparis loeselii from single-census and inventory data

Oostermeijer, J.G.B.; Hartman, Yorike

doi:10.1016/j.actao.2014.08.002

Cited by 15 publications

(36 citation statements)

References 33 publications

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“…However, as yet, few demographic studies have been published in relation to changes in environmental conditions (e.g. Jones et al 1995, Jones 1998, Wheeler et al 1998, McMaster 2001, Oostermeijer & Hartman 2014. In Central Europe it is now considered as an endangered species (Schnittler & Günther 1999) and has been listed in Annex II and Annex IV of the Council Directive 92/ 43/EEC on the Conservation of natural habitats, thus making it a priority species for conservation in most European countries.…”

Section: Introductionmentioning

confidence: 99%

“…is a small orchid which in coastal wetlands (interdunal slacks) thrives on mineral soils (Jones & Etherington 1992, Lammerts & Grootjans 1998, Petersen 2000, Oostermeijer & Hartman 2014. It is also encountered in low-productive, calcareous peatlands (fens) (Wheeler et al 1998, McMaster 2001, Pawlikowski 2008, Naczk & Minasiewicz 2010, Milanović 2012, Oostermeijer & Hartman 2014, and in purely man-made habitats, such as gravel-pits (Bzdon & Ciosek 2006) or excavated peatlands (Wheeler et al 1998). Liparis loeselii has a wide distribution, ranging from the northeast of the United States and Canada, to northern and Central European countries, Russia and even several localities in Siberia.…”

Section: Introductionmentioning

confidence: 99%

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Window of opportunity of Liparis loeselii populations during vegetation succession on the Wadden Sea islands

et al. 2016

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The present study aims at assessing the life span of populations of the orchid L. loeselii during successional in dune slacks on the Wadden Sea islands. An inventory of Liparis loeselii populations was carried out on 6 islands, while the population structure was assessed in more detail on the island of Texel. The occurrence of the orchid was related to soil factors and hydrological conditions. Groundwater levels were measured in a dune area with natural dune slack formation. The groundwater composition was analyses and the freshwater lenses were modelled. Various scenarios were investigated, including sea level rise and sand nourishment. The window of opportunity for L. loeselii to colonize a new slack is relatively narrow. Under favorable management, the population can survive c. 20 years. Soil pH was positively correlated with the occurrence of L. loeselii populations, while a high organic matter content was negatively correlated. Sites with large populations of L. loeselii, were situated in young dune slacks, that functioned as flow-through lakes and has top soilsinfluenced by anoxic calcareous groundwater. Modelling showed that the freshwater lens would decrease due to sea level rise, while artificial sand nourishment could counteract this effect. The populations of the Hors area on Texel, the Netherlands, can survive for several decades due to continuous formation of new slacks. Discharge of calcareous groundwater is essential to keep the pH on a high level. The hydrological systems that supply dune slack with groundwater are relatively small and are vulnerable for changes in sea level rise.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Window of opportunity of Liparis loeselii populations during vegetation succession on the Wadden Sea islands

et al. 2016

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“…In M. monophyllos populations, in every region and type of habitat, year-to-year changes are exceptionally large, both in abundance (up to 300% differences in abundance), as well as in spatial structure (K D = 0.414-1.150). Oostermeijer and Hartman [73], for example, observed large population dynamics for another orchid connected with swampy habitats, Liparis loeselii, and concluded that it depends mainly on the colonization of new, suitable habitats. Such an explanation, consistent with the metapopulation model, might be highly probable in the case of M. monophyllos, especially when it occurs in areas (i.e., river valleys, along mountain streams) where suitable habitats are patchy in character.…”

Section: Discussionmentioning

confidence: 99%

Demographic responses of boreal-montane orchid Malaxis monophyllos (L.) Sw. populations to contrasting environmental conditions

Jermakowicz

Brzosko

2016

Acta Soc Bot Pol

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In an age of changes in species' geographical ranges, compounded by climatic and anthropogenic impacts, it become important to know which processes and factors influence plant populations and their persistence in the long term.Here we investigated dynamic and fitness components in twelve populations of Malaxis monophyllos (L.) Sw., situated in different geographical (regions) and ecological (type of habitat) units. Although M. monophyllos is a rare species, characterized by highly fragmented, boreal-montane distribution range, in last few decades it successfully colonized secondary habitats in Polish uplands. Our results indicate that M. monophyllos is represented mainly by small populations, which annual spatial and temporal changes might be very high, what affects the ephemeral character of these populations, regardless of the region and type of habitat. This dynamic structure, in turn, is caused by intensive exchange of individuals in populations, as well as by their short above-ground life span. Despite the large range of variation in size and reproductive traits, we can distinguish some regional patterns, which indicate boreal region as the most optimal for M. monophyllos growth and persistence in the long term, and with montane and upland/anthropogenic populations, due to lower reproductive parameters, as the most threatened. Although it should be considered that anthropogenic populations, despite their lower reproductive parameters and instability in the long term, present an intermediate, geographical and ecological character, therefore they may be valuable in shaping, both M. monophyllos' future range, as well as its potential for response on ongoing and future changes. In general, reproduction is the main factor differentiating of M. monophyllos populations in regions, and we can suspect that it may become the cause of the future differentiation and isolation of these populations, occurring with progressive range fragmentation.

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“…Management should then be aimed at safeguarding the various successional stages, and hence biodiversity, on a larger scale than one island tail, taking into account dispersal strategies, average times of population persistence and windows of opportunity (e.g. Oostermeijer and Hartman 2014). As island heads may contain similar elements and communities as island tails (dunes, green beaches and salt marshes), they should be included in such nature-management Fig.…”

Section: Discussion Generalmentioning

confidence: 99%

Tales of island tails: biogeomorphic development and management of barrier islands

Groot¹,

Oost

Veeneklaas³

et al. 2016

J Coast Conserv

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The Frisian islands (Southern North Sea) have extensive island tails, i.e. the entire downdrift side of an island consisting of salt marshes, dunes, beaches and beach plains, and green beaches. Currently, large parts of these tails are ageing and losing dynamics, partly due to human influence. This may mean a loss of young stages on the long term, and current management is not enough to counteract this. To aid the development of new interventions aiming at (re)introducing natural dynamics, a conceptual model of island-tail development under natural and disturbed conditions was developed, based on existing data, field visits and literature. The development of an island tail follows the general pattern of biogeomorphic succession. The first phase consists of a bare beach plain. In the second phase, embryonic dunes form. In the third phase, green beaches, dunes and salt marshes form, including drainage by creeks and washovers. In the fourth phase, vegetation succession continues and the morphology stabilises. Human interference (such as sand dikes and embankments) reduces natural dynamics and increases succession speed, leading to a reduction in the diversity in landforms and vegetation types. Both for natural and human-influenced island tails, succession is the dominant process and large-scale rejuvenation only occurs spontaneously when large-scale processes cause erosion or sedimentation. Island tails cannot be kept permanently in a young successional stage by reintroducing natural dynamics through management interventions, as biogeomorphic succession is dominant. However, such interventions may result in local and temporal rejuvenation when tailored to the specific situation.

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Inferring population and metapopulation dynamics of Liparis loeselii from single-census and inventory data

Cited by 15 publications

References 33 publications

Window of opportunity of Liparis loeselii populations during vegetation succession on the Wadden Sea islands

Window of opportunity of Liparis loeselii populations during vegetation succession on the Wadden Sea islands

Demographic responses of boreal-montane orchid Malaxis monophyllos (L.) Sw. populations to contrasting environmental conditions

Tales of island tails: biogeomorphic development and management of barrier islands

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