Making the most of mathematical models for effective environmental management

Yokomizo, Hiroyuki; Takimoto, Gaku

doi:10.1007/s10144-013-0420-3

Population Ecology

2013

DOI: 10.1007/s10144-013-0420-3

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Making the most of mathematical models for effective environmental management

Hiroyuki Yokomizo

Gaku Takimoto

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Cited by 2 publications

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“…The four articles in this special feature are based on the presentations of the symposium in the annual meeting of the Society of Population Ecology in 2012, but each of them extends its content. We think that the importance of its viewpoint should be recognized to make the mathematical models effective for environmental management as argued in the preface by Yokomizo and Takimoto (2014), and hope it will become popular for better management in practice.…”

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Satō

2013

Population Ecology

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Satō

2013

Population Ecology

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Moss cover and browsing scores as sustainability indicators of mountain ungulate populations in Mediterranean environments

et al. 2022

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Here, we aimed to define ecological indicators of environmental change for monitoring the effect of a reintroduced species, the Iberian ibex (Capra pyrenaica), over the vegetation of a natural protected area with contrasting habitats. This species was reintroduced 30 years ago in the Sierra de Guadarrama National Park, Spain, and its population has since grown exponentially, reaching high densities in some areas. We tested the suitability of two complementary indicators: browsing damage on woody species and the percentage of moss cover loss on rocky outcrops. For this purpose, we used a mathematical approach to zone the natural protected area according to the historical presence of the species and established five different Iberian ibex pressure classes (Classes I–V). Our results showed a direct link between Iberian ibex pressure and vegetation status. Model predictions suggested 10% moss loss in the areas with low pressure (Class I) but 64% loss in the areas with high pressure (Class III), mostly due to ungulate trampling on rocks. Similarly, browsing damage increased with increasing pressure classes for different woody species. Low palatable plant species such as Pinus spp. showed little change in browsing damage for increasing ungulate pressure whereas more palatable plants (e.g., Erica arborea) showed significantly greater browsing damage variation across pressure classes (i.e., high sensitive to herbivory pressure). Both, moss cover on rocks and widely distributed palatable woody plants proved useful ecological indicators for monitoring ungulate populations in mountainous areas with a diverse array of habitats (e.g., rocky vs. woody). This methodology may help select the most suitable indicators for each type of ecosystem or dominant habitat in ungulate-dominated ecosystems.

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Making the most of mathematical models for effective environmental management

Cited by 2 publications

References 29 publications

Highlights for coming volumes

Highlights for coming volumes

Moss cover and browsing scores as sustainability indicators of mountain ungulate populations in Mediterranean environments

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