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81. Non-linear response of water and sediment yields to ecological restoration in degraded drylands

Author:
Jiang, Chong; Wang, Xinchi; Zhang, Haiyan; Labzovskii, Lev; Wang, Jun; Liu, Tong
Source:
Journal of arid environments 2019
ISSN:
0140-1963
Subject:
vegetation cover,   etc   ; arid lands; case studies; climatic factors; dry environmental conditions; ecological function; ecological restoration; ecosystems; evapotranspiration; issues and policy; rain; sediment yield; soil; water conservation; water erosion; water yield; China;     Show all 17 Subjects
Abstract:
... Ecological restoration efforts to combat soil loss often fail to deliver the expected benefits despite enormous investments. Better understanding the close relationships between climate, vegetation, and non-linear ecosystem dynamics can help restoration activities meet their intended goals. The severely eroded Loess Plateau (LP) was selected for a case study to investigate the underlying drivers o ...
DOI:
10.1016/j.jaridenv.2019.05.002

82. Geodiversity effects on soil quality and geo-ecosystem functioning in drylands

Author:
Stavi, Ilan; Rachmilevitch, Shimon; Yizhaq, Hezi
Source:
Catena 2019 v.176 pp. 372-380
ISSN:
0341-8162
Subject:
vegetation cover,   etc   ; arid lands; clay; clay fraction; drought; ecosystems; landscapes; microhabitats; mortality; particulate organic carbon; shrublands; shrubs; soil electrical conductivity; soil quality; soil solution; species richness; topographic slope; total organic carbon; Israel;     Show all 19 Subjects
Abstract:
... Geodiversity is defined as the natural variability of geologic, geomorphic, and soil features. It has been acknowledged to positively affect biodiversity and species richness. A long-term drought occurring in the semi-arid northern Negev of Israel has led to the mass mortality of shrubs, with the particularly adverse impact on the predominant Noaea mucronata species. Recent observations in these s ...
DOI:
10.1016/j.catena.2019.01.037

83. Quad bike impacts on vegetation and soil physicochemical properties in an arid ecosystem

Author:
Navas Romero, Ana L.; Herrera Moratta, Mario A.; Dalmasso, Antonio D.; Barros, Agustina
Source:
Acta oecologica 2019 v.97 pp. 14-22
ISSN:
1146-609X
Subject:
vegetation cover,   etc   ; Salsola tragus; all-terrain vehicles; ecosystems; electrical conductivity; grasses; indigenous species; invasive species; landscapes; man-made trails; perennials; phytosociology; porosity; shrubs; soil compaction; soil pH; soil physical properties; soil sampling; texture; traffic;     Show all 20 Subjects
Abstract:
... The increase use of Off-Road Vehicles (ORVs) coupled with the absence of control strategies have led to extensive use of natural areas for the creation of recreational trails. We assessed the effects of quad bikes on vegetation and soils in an arid ecosystem subjected to intensive quad bike use. We selected randomly eight traffic sites (disturbed sites) and eight adjacent control sites (undisturbe ...
DOI:
10.1016/j.actao.2019.04.007

84. Assessment of flood-induced changes in soil heavy metal and nutrient status in Rajanpur, Pakistan

Author:
Hafeez, Farhan; Zafar, Noman; Nazir, Rashid; Javeed, Hafiz Muhammad Rashad; Rizwan, Muhammad; Faridullah,; Asad, Saeed Ahmad; Iqbal, Akhtar
Source:
Environmental monitoring and assessment 2019 v.191 no.4 pp. 234
ISSN:
0167-6369
Subject:
vegetation cover,   etc   ; agricultural productivity; cadmium; chromium; ecosystems; empirical research; floods; food security; heavy metals; lead; nitrates; nutrient content; nutrients; organic carbon; phosphorus; physicochemical properties; pollution; remote sensing; soil chemical properties; soil texture; Pakistan;     Show all 21 Subjects
Abstract:
... Flood events around the globe have severely impaired the soil functioning resulting in compromised food security in several parts of the world. The current study was aimed to explore the impacts of floods on soil heavy metals and nutrients status at three locations; Tibbi Solgi (TS), Vinri Khosa (VK), and Noshehra West (NW-control) in the district Rajanpur of Punjab, Pakistan. TS and VK sites were ...
DOI:
10.1007/s10661-019-7371-x

85. The Use of Low-Altitude UAV Imagery to Assess Western Juniper Density and Canopy Cover in Treated and Untreated Stands

Author:
Durfee, Nicole; Ochoa, Carlos G.; Mata-Gonzalez, Ricardo
Source:
Forests 2019 v.10 no.4
ISSN:
1999-4907
Subject:
vegetation cover,   etc   ; Juniperus occidentalis; altitude; canopy; ecosystems; monitoring; multispectral imagery; population density; reflectance; remote sensing; summer; support vector machines; unmanned aerial vehicles; vegetation index; visual perception; watersheds; wavelengths; woodlands; Oregon;     Show all 19 Subjects
Abstract:
... Monitoring vegetation characteristics and ground cover is crucial to determine appropriate management techniques in western juniper (Juniperus occidentalis Hook.) ecosystems. Remote-sensing techniques have been used to study vegetation cover; yet, few studies have applied these techniques using unmanned aerial vehicles (UAV), specifically in areas of juniper woodlands. We used ground-based data in ...
DOI:
10.3390/f10040296

86. Differences in crab burrowing and halophyte growth by habitat types in a Korean salt marsh

Author:
Bang, Jeong Hwan; Lee, Eun Ju
Source:
Ecological indicators 2019 v.98 pp. 599-607
ISSN:
1470-160X
Subject:
vegetation cover,   etc   ; biogeochemical cycles; burrowing; cluster analysis; crabs; ecosystems; environmental indicators; habitats; halophytes; physicochemical properties; phytomass; population distribution; principal component analysis; salt marsh soils; salt marshes; seed dispersal; soil chemical properties; soil composition; soil nutrients; soil physical properties; vegetation structure;     Show all 21 Subjects
Abstract:
... Crabs and halophytes are important indicators of soil composition and fertility in salt marsh ecosystems. Many previous studies have examined the effects of crab excavation on soil properties, but little is known about the combined effects of crabs and halophytes on salt marsh soils. The purpose of this study was to identify the distribution of halophytes and crabs in a macrotidal salt marsh, and ...
DOI:
10.1016/j.ecolind.2018.11.029

87. When and where does dispersal limitation matter in primary succession?

Author:
Makoto, Kobayashi; Wilson, Scott D.
Source:
Thejournal of ecology 2019 v.107 no.2 pp. 559-565
ISSN:
0022-0477
Subject:
vegetation cover,   etc   ; anthropogenic activities; case studies; chronosequences; climate change; ecological function; ecosystems; floodplains; forests; glaciers; new species; primary succession; risk; seed dispersal; soil carbon; temperate zones; volcanic activity; Arctic region;     Show all 18 Subjects
Abstract:
... Primary succession encompasses the earliest and most fundamental stages of community assembly. The relative contributions of plant dispersal and ecosystem development, the main drivers that control the rate of primary succession, remain largely unknown, in spite of their central roles in community organization in general. Understanding the contribution of dispersal is especially critical because i ...
DOI:
10.1111/1365-2745.12988

88. Effects of nitrogen and phosphorus on the production of carbon dioxide and nitrous oxide in salt-affected soils under different vegetation communities

Author:
Zhang, Lihua; Shao, Hongbo; Wang, Bingchen; Zhang, Liwen; Qin, Xiaochun
Source:
Atmospheric environment 2019
ISSN:
1352-2310
Subject:
vegetation cover,   etc   ; Phragmites australis; Suaeda; Tamarix chinensis; atmospheric chemistry; carbon dioxide; carbon dioxide production; ecosystems; greenhouse gas emissions; greenhouse gases; nitrogen; nitrous oxide; nutrient availability; phosphorus; plant communities; river deltas; saline soils; China; Yellow River;     Show all 19 Subjects
Abstract:
... Nutrient availability greatly regulates ecosystem processes in salt-affected soils. However, few studies have explored the impacts of nitrogen (N), phosphorus (P) and N×P interactions on CO2 and N2O emissions from salt-affected soils in the Yellow River Delta (YRD), which is one of the three biggest deltas in China. An incubation study was conducted to test the effects of N or P addition alone, as ...
DOI:
10.1016/j.atmosenv.2019.02.024

89. Overstory–Understory Vegetation Cover and Soil Water Content Observations in Western Juniper Woodlands: A Paired Watershed Study in Central Oregon, USA

Author:
Ray, Grace; Ochoa, Carlos G.; Deboodt, Tim; Mata-Gonzalez, Ricardo
Source:
Forests 2019 v.10 no.2
ISSN:
1999-4907
Subject:
vegetation cover,   etc   ; Juniperus occidentalis; annuals; canopy; ecosystems; grasses; landscapes; long term effects; perennials; seasonal variation; shrubs; soil texture; spring; streams; subsurface flow; topsoil; topsoil water content; trees; understory; water content; watersheds; wet season; woodlands; Oregon;     Show all 24 Subjects
Abstract:
... The effects of western juniper (Juniperus occidentalis) control on understory vegetation and soil water content were studied at the watershed-scale. Seasonal differences in topsoil (12 cm) water content, as affected by vegetation structure and soil texture, were evaluated in a 96-ha untreated watershed and in a 116-ha watershed where 90% juniper was removed in 2005. A watershed-scale characterizat ...
DOI:
10.3390/f10020151

90. Altitudinal pattern of grazing exclusion effects on vegetation characteristics and soil properties in alpine grasslands on the central Tibetan Plateau

Author:
Zhao, Jingxue; Sun, Feida; Tian, Lihua
Source:
Journal of soils and sediments 2019 v.19 no.2 pp. 750-761
ISSN:
1439-0108
Subject:
vegetation cover,   etc   ; Cyperaceae; aboveground biomass; alpine grasslands; alpine meadows; altitude; belowground biomass; ecosystems; grasses; grazing; herbs; legumes; microbial carbon; microbial nitrogen; plant height; population characteristics; soil microorganisms; soil organic carbon; soil properties; stocking rate; total nitrogen; China;     Show all 22 Subjects
Abstract:
... PURPOSE: Grazing exclusion by fencing has been widely used for restoring degraded alpine grasslands, but rarely studies have considered the altitudinal difference of grazing exclusion effects on vegetation characteristics and soil properties. In this study, we focused our attention mainly on how alpine grasslands at different altitudes will response to long-term grazing exclusion. MATERIALS AND ME ...
DOI:
10.1007/s11368-018-2056-6

91. Geobotany in a fault in the world’s largest continuous wetland in central South America

Author:
de Almeida, Teodoro Isnard Ribeiro; do Amaral, Cibele Hummel; Botelho, Moreno; Ribeiro, Eduardo Francisco; Penatti, Natasha Costa
Source:
Wetlands ecology and management 2019 v.27 no.1 pp. 171-185
ISSN:
0923-4861
Subject:
vegetation cover,   etc   ; basins; cerrado; computer software; data collection; ecosystems; evergreen forests; floods; moderate resolution imaging spectroradiometer; phenology; phytogeography; plant communities; plant taxonomy; rain; seasonal variation; sediments; species identification; surveys; time series analysis; wetlands; Pantanal; South America;     Show all 22 Subjects
Abstract:
... The Pantanal is located in the center of South America in a tectonically active sedimentary basin of Quaternary age. Even though the relief is flat and the diversity of the sediments is low, its vegetation cover has high variability resulting from seasonal fluctuations in water levels and the presence of four surrounding biomes. Changes in elevation of less than 1 m influence the length and intens ...
DOI:
10.1007/s11273-018-9650-7

92. Mapping foliar functional traits and their uncertainties across three years in a grassland experiment

Author:
Wang, Zhihui; Townsend, Philip A.; Schweiger, Anna K.; Couture, John J.; Singh, Aditya; Hobbie, Sarah E.; Cavender-Bares, Jeannine
Source:
Remote sensing of environment 2019 v.221 pp. 405-416
ISSN:
0034-4257
Subject:
vegetation cover,   etc   ; algorithms; cellulose; ecosystems; functional diversity; grasslands; hemicellulose; image analysis; irrigation; leaf mass; least squares; lignin; model validation; models; nitrogen; normal distribution; photosynthesis; pigments; prediction; remote sensing; species richness; spectroscopy; uncertainty; Minnesota;     Show all 24 Subjects
Abstract:
... Foliar functional traits refer to a range of biochemical and physiognomic characteristics of vegetation that control photosynthesis, nutrient and water cycling, and can be used to describe the functional diversity of ecosystems. In this study, we utilize NASA AVIRIS - Next Generation imaging spectroscopy data to map 15 foliar functional traits in a grassland experiment at the Cedar Creek Ecosystem ...
DOI:
10.1016/j.rse.2018.11.016

93. Response of vegetation cover to climate variability in protected and grazed arid rangelands of South Australia

Author:
Long, Xunjian; Guan, Huade; Sinclair, Russell; Batelaan, Okke; Facelli, José M.; Andrew, Robert L.; Bestland, Erick
Source:
Journal of arid environments 2019 v.161 pp. 64-71
ISSN:
0140-1963
Subject:
vegetation cover,   etc   ; atmospheric precipitation; carbon dioxide; climate; drought; dry environmental conditions; ecosystems; global carbon budget; grazing intensity; grazing management; landscapes; normalized difference vegetation index; rangelands; temporal variation; water storage; South Australia;     Show all 16 Subjects
Abstract:
... Large-scale drought and wet phases, via ecosystem responses, can significantly influence the global atmospheric carbon budget. Australian landscapes, dominated by arid and semi-arid rangelands, play an important role in this regard. In this study, temporal variation of monthly Normalised Difference Vegetation Index (NDVI) of two rangelands with different grazing intensity were analysed against mon ...
DOI:
10.1016/j.jaridenv.2018.10.001

94. The ecology of littoral zone Chironomidae in four artificial, urban, tropical Malaysian lakes

Author:
Lee, Jin-Min; Gan, Jing-Ye; Yule, Catherine Mary
Source:
Urban ecosystems 2019 v.22 no.1 pp. 149-159
ISSN:
1083-8155
Subject:
vegetation cover,   etc   ; Cyanobacteria; Polypedilum; Procladius; canopy; dams (hydrology); developing countries; diet; ecosystems; forest reserves; lakes; larvae; littoral zone; macrophytes; microhabitats; periphyton; plant litter; pollution; predators; rivers; species richness; temperature; tin; urban areas; urban forests; urban parks; urbanization; Malaysia;     Show all 28 Subjects
Abstract:
... Urbanization is increasingly compromising lakes in the rapidly developing countries of tropical Southeast Asia. Greater understanding of the ecology of tropical lakes is essential in order to determine the best ways to protect and manage them. A comparison was made of the species richness, abundance and diets of Chironomidae in two forest lakes (both created by damming rivers - one in an urban for ...
DOI:
10.1007/s11252-018-0802-6

95. Regulating Ecosystem Services and Green Infrastructure: assessment of Urban Heat Island effect mitigation in the municipality of Rome, Italy

Author:
Marando, Federica; Salvatori, Elisabetta; Sebastiani, Alessandro; Fusaro, Lina; Manes, Fausto
Source:
Ecological modelling 2019 v.392 pp. 92-102
ISSN:
0304-3800
Subject:
vegetation cover,   etc   ; European Union; Landsat; Mediterranean climate; cities; decision making; ecosystem services; ecosystems; environmental impact; environmental quality; green infrastructure; heat island; human health; normalized difference vegetation index; street trees; summer; surface temperature; urban forests; urbanization; Italy;     Show all 20 Subjects
Abstract:
... The Urban Heat Island (UHI) effect is one of the main environmental impacts of urbanization, affecting directly human health and well-being of the city dwellers, and also contributing to worsen environmental quality. As a key strategy to address sustainable urban development, the EU has advocated the development of Nature-Based solutions, such as the implementation of Green Infrastructure (GI), wh ...
DOI:
10.1016/j.ecolmodel.2018.11.011

96. The Kobresia pygmaea ecosystem of the Tibetan highlands – Origin, functioning and degradation of the world's largest pastoral alpine ecosystem

Author:
Miehe, Georg; Schleuss, Per-Marten; Seeber, Elke; Babel, Wolfgang; Biermann, Tobias; Braendle, Martin; Chen, Fahu; Coners, Heinz; Foken, Thomas; Gerken, Tobias; Graf, Hans-F.; Guggenberger, Georg; Hafner, Silke; Holzapfel, Maika; Ingrisch, Johannes; Kuzyakov, Yakov; Lai, Zhongping; Lehnert, Lukas; Leuschner, Christoph; Li, Xiaogang; Liu, Jianquan; Liu, Shibin; Ma, Yaoming; Miehe, Sabine; Mosbrugger, Volker; Noltie, Henry J.; Schmidt, Joachim; Spielvogel, Sandra; Unteregelsbacher, Sebastian; Wang, Yun; Willinghöfer, Sandra; Xu, Xingliang; Yang, Yongping; Zhang, Shuren; Opgenoorth, Lars; Wesche, Karsten
Source:
The Science of the total environment 2019 v.648 pp. 754-771
ISSN:
0048-9697
Subject:
vegetation cover,   etc   ; Carex; Kobresia; altitude; carbon sinks; climate change; cracking; ecosystems; genetic variation; growing season; highlands; lawns and turf; pastoralism; pastures; predators; rain; range management; small mammals; soil erosion; surface temperature;     Show all 20 Subjects
Abstract:
... With 450,000 km2Kobresia (syn. Carex) pygmaea dominated pastures in the eastern Tibetan highlands are the world's largest pastoral alpine ecosystem forming a durable turf cover at 3000–6000 m a.s.l. Kobresia's resilience and competitiveness is based on dwarf habit, predominantly below-ground allocation of photo assimilates, mixture of seed production and clonal growth, and high genetic diversity. ...
DOI:
10.1016/j.scitotenv.2018.08.164

97. Controlling the invader Urochloa decumbens: Subsidies for ecological restoration in subtropical Campos grassland

Author:
Thomas, Pedro Augusto; Schüler, Jéssica; Boavista, Lidiane da Rosa; Torchelsen, Fábio Piccin; Overbeck, Gerhard Ernst; Müller, Sandra Cristina
Source:
Applied vegetation science 2019 v.22 no.1 pp. 96-104
ISSN:
1402-2001
Subject:
vegetation cover,   etc   ; Urochloa decumbens; ecological restoration; ecosystems; grasslands; hay; herbicides; indigenous species; introduced species; invasive species; pesticide application; plant communities; plants (botany); sowing; species reintroduction; species richness; subsidies; subtropics; topsoil; tropics; Brazil;     Show all 21 Subjects
Abstract:
... QUESTIONS: Restoration of grassy biomes is currently of large importance, and controlling invasive grasses is often key to restoring these ecosystems in the tropics and subtropics. We combined different ecological restoration techniques to evaluate potential to control the invasive grass Urochloa decumbens and restore plant species composition. Specific questions were: (a) are herbicide applicatio ...
DOI:
10.1111/avsc.12407

98. The ratio of Gram-positive to Gram-negative bacterial PLFA markers as an indicator of carbon availability in organic soils

Author:
Fanin, Nicolas; Kardol, Paul; Farrell, Mark; Nilsson, Marie-Charlotte; Gundale, Michael J.; Wardle, David A.
Source:
Soil biology & biochemistry 2019 v.128 pp. 111-114
ISSN:
0038-0717
Subject:
vegetation cover,   etc   ; Gram-negative bacteria; carbon; chronosequences; community structure; ecosystems; energy; microbial communities; nuclear magnetic resonance spectroscopy; organic soils; phospholipid fatty acids; roots; shrubs; soil bacteria; soil organic matter; trees;     Show all 16 Subjects
Abstract:
... Despite recent progress in understanding soil microbial responses to carbon (C) limitation, the functional shifts in microbial community structure associated with decreasing soil C availability and changes in organic matter chemistry remain poorly known. It has been proposed that Gram-negative (GN) bacteria use more plant-derived C sources that are relatively labile, while Gram-positive (GP) bacte ...
DOI:
10.1016/j.soilbio.2018.10.010

99. Ecological stoichiometry and environmental influencing factors of soil nutrients in the karst rocky desertification ecosystem, southwest China

Author:
Wang, Linjiao; Wang, Pan; Sheng, Maoyin; Tian, Jing
Source:
Global ecology and conservation 2018 v.16 pp. e00449
ISSN:
2351-9894
Subject:
vegetation cover,   etc   ; desertification; ecosystems; karsts; land cover; nitrogen; nutrient content; phosphorus; potassium; soil; soil ecology; soil nutrients; stoichiometry; temperature; China;     Show all 15 Subjects
Abstract:
... The stoichiometry characteristics and environmental influencing factors of soil nutrients of the three typical karst rocky desertification sites in Southwest China were studied. The results showed that the average contents of soil C, N, P and K in the three typical rocky desertification sites were 45.61, 2.54, 0.79 and 3.33 g/kg, respectively. The average values of C:N, C:P, C:K, N:P, N:K and P:K ...
DOI:
10.1016/j.gecco.2018.e00449

100. Fractional vegetation cover estimation by using multi-angle vegetation index

Author:
Mu, Xihan; Song, Wanjuan; Gao, Zhan; McVicar, Tim R.; Donohue, Randall J.; Yan, Guangjian
Source:
Remote sensing of environment 2018 v.216 pp. 44-56
ISSN:
0034-4257
Subject:
fractional vegetation cover,   etc   ; byproducts; ecosystems; models; moderate resolution imaging spectroradiometer; photosynthetically active radiation; reflectance; remote sensing; soil; uncertainty; vegetation index;     Show all 11 Subjects
Abstract:
... The vegetation index-based (VI-based) mixture model is widely used to derive green fractional vegetation cover (FVC) from remotely sensed data. Two critical parameters of the model are the vegetation index values of fully-vegetated and bare soil pixels (denoted Vx and Vn hereafter). These are commonly empirically set according to spatial and/or temporal statistics. The uncertainty and difficulty o ...
DOI:
10.1016/j.rse.2018.06.022