Alpine Nodal Ecology and Ecosystem Evolution in the North-Central Rockies (Mount Washburn; Yellowstone National Park, Wyoming)

Aho, Ken; Weaver, T.

doi:10.1657/1938-4246-42.2.139

Cited by 4 publications

(1 citation statement)

References 58 publications

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“…However, under the dual influence of global climate change and human disturbance, a series of ecological environment problems have been triggered, affecting the ecological environment stability in Northeast China. Understanding ecosystem evolution and driving factors is significant for ecosystem protection and sustainable development [3][4][5][6][7][8][9][10]. In the face of increasingly serious ecological problems, it is urgent to scientifically evaluate the Land 2022, 11, 1306 2 of 25 ecosystem status, changing trends, and driving factors of the NFB.…”

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confidence: 99%

Ecosystem and Driving Force Evaluation of Northeast Forest Belt

Liao

Jiang

Zhou

et al. 2022

Land

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The ecosystem in the Northeast Forest Belt (NFB) can provide various ecosystem services, such as soil conservation, habitat provision, water conservation, and so on. It is essential for maintaining the ecological environment in Northeast China and the entire country. In the face of increasingly severe environmental problems, the comprehensive and accurate evaluation of ecosystem conditions and their changes is significant for scientific and reasonable recovery and protection measures. In this study, the NFB was taken as the research area. The spatio-temporal changes in ecological quality from 2005 to 2015 and the main driving factors behind them were analyzed by constructing the comprehensive ecosystem evaluation index. The results showed that: The landscape types of the NFB were mainly forest, cropland, and grassland. And the better ecological environment of the NFB was mainly distributed in the south of Changbai Mountains (CBM), the middle of Lesser Khingan Mountains (LKM), and the northwest of Greater Khingan Mountains (GKM). In contrast, the northeast of CBM, the southwest of LKM, and the edge of southern GKM were relatively poor. During 2005–2015, the ecosystem in the NFB was in a relatively good state as a whole, showing a steady-to-good development trend. However, more attention needed to be paid to some areas where degradation still existed. Land use/cover, climate (annual average rainfall, etc.), and human disturbance were potential factors affecting ecosystem evolution in the NFB. This study aims to provide an effective scientific basis and policy reference for the environmental protection and construction of the NFB.

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Section: Introductionmentioning

confidence: 99%

Ecosystem and Driving Force Evaluation of Northeast Forest Belt

Liao

Jiang

Zhou

et al. 2022

Land

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Mortality of Australian alpine grasses (Poa spp.) after drought: species differences and ecological patterns

Griffin

Hoffmann

2011

Journal of Plant Ecology

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Water and substrate control of cliff communities: patterns among species and phyla

Aho

Weaver

Eversman

2014

J Vegetation Science

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Aims Cliff communities tend to be compositionally simple but taxonomically diverse at the phylum/division level. As a result, they provide a setting for examining the responses of distinct phyla (e.g. Anthophyta, Bryophyta and lichens), species within these phyla and communities comprised of these phyla, to the same environmental gradients. Our aims were both descriptive and hypothesis‐driven. We sought to identify major community shifts across water–substrate gradients in a poorly studied system (inland North American cliffs), while considering extant hypotheses concerning the relationships of organisms to environments at different taxonomic scales. Location Sub‐alpine cliffs in northeastern Yellowstone National Park. Methods Cliff faces on two mountains were blocked at nine waterfalls. At each block, community composition was recorded from random samples obtained for three levels of water availability (xeric, mesic and hygric) on two substrates (limestone and andesite). Patterns of cover and richness were compared using Friedman's Rank F‐tests. Community patterns were discerned using permutation MANOVAs, ordinations, and cluster analyses. Results Phyletic composition varied in response to water availability. In general, lichens dominated dry sites, while vascular plants dominated wet sites. Anthophyta was the most narrowly specialized phylum, and Bryophyta was the most generalized. Beta diversity was higher at drier sites, due to the dominance of the diverse lichen group. As a result, communities on lime and andesitic substrates were indistinguishable in hygric environments, but significantly different at drier sites. This may have occurred because, while water is limiting for neither substrate in hygric environments, andesites are more likely to absorb and store atmospheric water in drier environments. Indicator species analyses identified 27 distinct species distinguishing water and substrate conditions, or their interactions. Conclusions Our experimental design uniquely accounted for extraneous variables in its examination of water and substrate effects on cliff communities. Water strongly controlled community composition both among and within phyla through both direct effects and interactions with substrate.

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Alpine Nodal Ecology and Ecosystem Evolution in the North-Central Rockies (Mount Washburn; Yellowstone National Park, Wyoming)

Cited by 4 publications

References 58 publications

Ecosystem and Driving Force Evaluation of Northeast Forest Belt

Ecosystem and Driving Force Evaluation of Northeast Forest Belt

Mortality of Australian alpine grasses (Poa spp.) after drought: species differences and ecological patterns

Water and substrate control of cliff communities: patterns among species and phyla

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