Distribution models for mountain plant species: The value of elevation

Oke, Oluwatobi A.; Thompson, Ken

doi:10.1016/j.ecolmodel.2015.01.019

Cited by 91 publications

(55 citation statements)

References 54 publications

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“…Auto features were used and other values were retained at default settings provided by Warren et al (2008). Shifts between climatic niches in native and invasive ranges on a global scale were also examined based on the niche overlap (Schoener's D (D)) and a measure derived from the Hellinger distance (I); this was evaluated using ENMTools 1.4.4 (Warren et al, 2008(Warren et al, , 2010Oke and Thompson, 2015). Furthermore, the niche overlaps between all models and native models or invasive models were quantified via D and I.…”

Section: Climatic Niche Shift Analysismentioning

confidence: 99%

Climatic niche shift of aquatic plant invaders between native and invasive ranges: a test using 10 species across different biomes on a global scale

Wang

Wan

QingBiao

et al. 2017

Knowl. Manag. Aquat. Ecosyst.

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-Environmental niche conservatism defines a concept, stating that species could live in the same environmental condition in both native and invasive ranges. Niche modeling often used this as basis for the prediction of the range of invasive plants. However, it is debatable whether environmental niches of invasive plant species are conserved or shift between native and invasive ranges. Only few studies have investigated such a shift in aquatic plant invaders (APIs) on a meaningful global scale. Environmental niche modeling was used to project climatic niche distributions of 10 APIs based both on the native range and the invasive range of species. We found that niche shifts of APIs between native and invasive ranges may occur throughout the world. Moreover, we found niche shifts of APIs between native and invasive ranges across different biomes. The largest climatic niche shift was detected for Najas minor and the smallest for Alternanthera philoxeroides. For all 10 APIs, overlap between both ranges was maximal for large river deltas, while overlap was minimal for temperate floodplain rivers and wetlands. For APIs, the suitability of the climatic habitat was highest in temperate coastal rivers for invasive models in invasive ranges. More importantly, based on invasive models, climatic suitability was significantly higher for temperate coastal rivers and temperate floodplain rivers and wetlands in invasive ranges and compared to native models. We suggest to integrate climatic niches of both native and invasive ranges into projections of the global climatic niche distribution of APIs.Keywords: climatic niche shift / aquatic plant species / biomes / niche overlap / plant invasion Résumé -Changement de niche climatique de plantes aquatiques invasives des habitats natifs aux habitats envahis : un test utilisant 10 espèces de différents biomes à une échelle globale. Le conservatisme de niche environnementale définit un concept, affirmant que les espèces pourraient vivre dans les mêmes conditions environnementales dans les habitats indigènes et invasifs. La modélisation de niche a souvent servi de base à la prédiction de l'extension des plantes envahissantes. Cependant, cela est discutable si les niches environnementales des espèces de plantes envahissantes sont conservées ou se modifient entre les aires indigènes et invasives. Seules quelques études ont étudié un tel changement chez les plantes aquatiques invasives (API) à une échelle mondiale significative. La modélisation de niche environnementale a été utilisée pour projeter des distributions de niches climatiques de 10 API basées à la fois sur la répartition native et invasive d'espèces. Nous avons constaté que des changements de niche des API entre les aires indigènes et invasives peuvent se produire dans le monde entier. En outre, nous avons trouvé des changements de niche des API entre les aires indigènes et invasives entre différents biomes. Le plus grand changement de niche climatique a été détecté chez Najas minor et le plus petit pour Alternanthera p...

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Section: Climatic Niche Shift Analysismentioning

confidence: 99%

Climatic niche shift of aquatic plant invaders between native and invasive ranges: a test using 10 species across different biomes on a global scale

Wang

Wan

QingBiao

et al. 2017

Knowl. Manag. Aquat. Ecosyst.

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“…There is a need to monitor the patterns of responses of habitat suitability to environmental variation for these six PSESP. However, it is also important for protection efforts to consider non-climatic factors, such as soil, vegetation types, slope, aspect and elevation etc., so that protection areas can be chosen appropriately (Parmesan et al 2005, Schwartz et al 2006, Austin and Van Niel 2011, Oke and Thompson 2015. Altitude and soil variables, including bulk density, cation exchange capacity and fraction of sand as a component of soil texture, have a large contribution to distributions of PSESP (Table 2).…”

Section: Discussionmentioning

confidence: 99%

“…The variable jackknife was used to evaluate the percentage contribution (PC) of environmental variables to distribution modelling for each species (Merow et al 2013). The threshold PC of habitat suitability was set at 15%; environmental variables exceeding this level of PC were considered important for each species (Oke and Thompson 2015).…”

Section: Modelling the Distributions Of Psespmentioning

confidence: 99%

“…Maxent predicted habitat suitability across maps wherein pixel values of 1 indicated the highest scores of habitat suitability and values of 0 indicated the lowest habitat suitability (Phillips et al 2006). For modelling the distributions of PSESP, the Maxent sets were as follows: 1) the regularisation multiplier (beta) was set to two to produce a smooth and general response that could be modelled in a biologically realistic manner (Radosavljevic and Anderson 2014); 2) a 10-fold cross-validation approach was used to remove bias from recorded occurrence points (Oke and Thompson 2015); 3) the maximum number of background points was set to 10,000 (Phillips et al 2006); 4) the jackknife method was used to determine the response curves of environmental variables to habitat suitability (Merow et al 2013); 5) The cloglog was used as the output of modelling, giving it a stronger theoretical justification than the logistic transformation (which it replaces by default) (Phillips et al 2017); and 6) other settings were identical to those described in Phillips et al (2006). The variable jackknife was used to evaluate the percentage contribution (PC) of environmental variables to distribution modelling for each species (Merow et al 2013).…”

Section: Modelling the Distributions Of Psespmentioning

confidence: 99%

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Planning priority conservation areas under climate change for six plant species with extremely small populations in China

QingBiao¹,

Wang²,

Zhang³

2018

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The concept of Plant Species with Extremely Small Populations (PSESP) has been employed to guide conservation of threatened plant species in China. Climate change has a high potential to threaten PSESP. As a result, it is necessary to integrate climate change effects on PSESP into conservation planning in China. Here, ecological niche modelling is used to project current and future habitat distributions of six PSESP in China under climate change scenarios and conservation planning software is applied to identify priority conservation areas (PCAs) for these PSESP based on habitat distributions. These results were used to provide proposals for in-situ and ex-situ conservation measures directed at PSESP. It was found that annual precipitation was important for habitat distributions for all six PSESP (with the percentage contribution to habitat distributions ranging from 18.1 % to 74.9 %) and non-climatic variables including soil and altitude have a large effect on habitat suitability of PSESP. Large quantities of PCAs occurred within some provincial regions for these six PSESP (e.g. Sichuan and Jilin for the PSESP Cathaya argyrophylla, Taxus cuspidata, Annamocarya sinensis and Madhuca pasquieri), indicating that these are likely to be appropriate areas for in-situ and ex-situ conservation measures directed at these PSESP. Those nature reserves with large quantities of PCAs were identified as promising sites for in-situ conservation measures of PSESP; such reserves include Yangzie and Dongdongtinghu for C. argyrophylla, Songhuajiangsanhu and Changbaishan for T. cuspidata and Shiwandashanshuiyuanlian for Tsoongiodendron odorum. These results suggest RESEARCH ARTICLE Launched to accelerate biodiversity conservation A peer-reviewed open-access journalHong Qu et al. / Nature Conservation 25: 89-106 (2018) 1 that existing seed banks and botanical gardens occurring within identified PCAs should allocate more resources and space to ex-situ conservation of PSESP. In addition, there should be additional botanical gardens established for ex-situ conservation of PSESP in PCAs outside existing nature reserves. To address the risk of negative effects of climate change on PSESP, it is necessary to integrate in-situ and ex-situ conservation as well as climate change monitoring in PSESP conservation planning.

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“…Elevation is suggested to be the main driver of species persistence in mountains (Randin et al 2009). It is therefore recommended to be included together with climatic variables as predictors in SDM for mountain-plant species (Oke and Thompson 2015). Elevation is associated with environmental changes in atmospheric pressure, temperature, solar radiation and UV-B radiation, which might influence plant performance (Körner 2007).…”

Section: Discussionmentioning

confidence: 99%

The distribution of the endemic plantPrimula scandinavica, at local and national scales, in changing mountainous environments

Wehn

Johansen

2015

Biodiversity

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Primula scandinavica is endemic to Norway and Sweden and populations are in decline due to changes in land use. Future climate change might have an additive effect on its distribution. To predict the future distribution of P. scandinavica, its potential suitable habitats with regard to land use and climate need to be investigated. We have generated species distribution models (SDMs) both for local (Eastern Jotunheimen) and national (Norway) scales and projected future distribution based on predicted climate and land use change. The best SDM at a national scale includes climate (temperature, precipitation, number of snow days) and elevation. The future potential distribution is projected to expand in the mountainous areas in the south and move north. At a local scale, the best SDM includes historic and present land use and livestock grazing pressure. Future distribution in the studied mountainous area is projected to decrease with continued abandonment of grazing.

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Distribution models for mountain plant species: The value of elevation

Cited by 91 publications

References 54 publications

Climatic niche shift of aquatic plant invaders between native and invasive ranges: a test using 10 species across different biomes on a global scale

Climatic niche shift of aquatic plant invaders between native and invasive ranges: a test using 10 species across different biomes on a global scale

Planning priority conservation areas under climate change for six plant species with extremely small populations in China

The distribution of the endemic plantPrimula scandinavica, at local and national scales, in changing mountainous environments

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