Page 3641 of 3644 Results 36401 - 36410 of 36434
Id/Author/Year/TitleOrder by:  Year  Id  Author  Title
36387
Best I.N., Brown L., Elkin C., Finnegan L., McClelland C.J.R. & Johnson C.J. (2024): Cut vs. fire: a comparative study of the temporal effects of timber harvest and wildfire on ecological indicators of the boreal forest - Landscape Ecology, 39: 81 [22 p.]

Context: Large-scale natural disturbances are crucial drivers of ecosystem function and composition for many forested ecosystems. In the last century, the prevalence of anthropogenic disturbances has increased across Canada’s boreal forest. Habitat disturbance from timber harvest and wildfire is linked to declines of boreal species, including woodland caribou (Rangifer tarandus caribou). Objectives: We tested how disturbances influenced the recovery trajectory of ecological indicators of timber, … URL EndNote PDF Read more... 

36388
Andersen R., Fernandez-Garcia P., Martin-Walker A., Klein D., Marshall C., Large D.J., Hughes R. & Hancock M.H. (2024): Blanket bog vegetation response to wildfire and drainage suggests resilience to low severity, infrequent burning - Fire Ecology, 20: 26 [16 p.]

Background: In 2019, a wildfire impacted an area of blanket bog and wet heath > 60 km2 in the Flow Country peatlands of northern Scotland, a site of global significance. Unusually the footprint of the wildfire included discrete areas of degraded, restored, and near-natural blanket bogs. Following the wildfire, we surveyed vegetation in 387 quadrats in burnt and unburnt areas. The study aimed to determine whether and how proximity to human-made drains and microtopography affected fire-vegetation … URL EndNote PDF Read more... 

36389
Berner L.T., Orndahl K.M., Rose M., Tamstorf M., Arndal M.F., Alexander H.D., Humphreys E.R., Loranty M.M., Ludwig S.M., Nyman J., Juutinen S., Aurela M., Happonen K., Mikola J., Mack M.C., Vankoughnett M.R., Iversen C.M., Salmon V.G., Yang D., Kumar J., Grogan P., Danby R.K., Scott N.A., Olofsson J., Siewert M.B., Deschamps L., Lévesque E., Maire V., Morneault A., Gauthier G., Gignac C., Boudreau S., Gaspard A., Kholodov A., Bret-Harte M.S., Greaves H.E., Walker D., Gregory F.M., Michelsen A., Kumpula T., Villoslada M., Ylänne H., Luoto M., Virtanen T., Forbes B.C., Hölzel N., Epstein H., Heim R.J., Bunn A,, Holmes R.M., Hung J.K.Y., Natali S.M., Virkkala A.-M. & Goetz S.J. (2024): The Arctic Plant Aboveground Biomass Synthesis Dataset - Scientific Data, 11: 305 [13 p.]

Plant biomass is a fundamental ecosystem attribute that is sensitive to rapid climatic changes occurring in the Arctic. Nevertheless, measuring plant biomass in the Arctic is logistically challenging and resource intensive. Lack of accessible field data hinders efforts to understand the amount, composition, distribution, and changes in plant biomass in these northern ecosystems. Here, we present The Arctic plant aboveground biomass synthesis dataset, which includes field measurements of lichen, bryophyte, … URL EndNote PDF Read more... 

36390
Manninen O.H., Myrsky E., Tolvanen A. & Stark S. (2024): N-fertilization and disturbance exert long-lasting complex legacies on subarctic ecosystems - Oecologia, 204: 689–704

Subarctic ecosystems are subjected to increasing nitrogen (N) enrichment and disturbances that induce particularly strong effects on plant communities when occurring in combination. There is little experimental evidence on the longevity of these effects. We applied N-fertilization (40 kg urea-N ha−1 year−1 for 4 years) and disturbance (removal of vegetation and organic soil layer on one occasion) in two plant communities in a subarctic forest-tundra ecotone in northern Finland. Within the first … URL EndNote PDF Read more... 

36391
Buril M.L.L., de Oliveira Silva A.K., Martins M.C.B., Silva H.P.B., Aptroot A., da Silva B.F. & Pereira E.C. (2024): Species of Peltula (lichenized Ascomycota) are shown to tolerate rock substrate rich in natural γ-radiation in NE Brazil - Total Environment Advances, 10: 200099 [9 p.]

Pedra Municipality in Pernambuco State (Northeastern Brazil) is known for encompassing areas with high natural radiation from 238U sources, contaminating soil, atmosphere, water, vegetation, and animals, including rural activities. A lichen survey was performed in the area, and species belonging to 19 genera were identified. The diversity is considered very low when compared to nearby municipalities and other similar regions, which might indicate the effect of radiation on the environment. The lichen … URL EndNote Read more... 

36392
Allain A., Alexis M.A., Bridoux M.C., Shirokova L.S., Payandi-Rolland D., Pokrovsky O.S. & Rouelle M. (2024): The specific molecular signature of dissolved organic matter extracted from different arctic plant species persists after biodegradation - Soil Biology and Biochemistry, 193: 109393 [12 p.]

Dissolved organic matter (DOM) is a small but very reactive pool of organic matter (OM) in the environment. Its role is related to its composition, which depends on its source. In soils, vegetation is the main source of DOM, and biodegradation is the main regulating mechanism. This study aims to characterise DOM produced by contrasted arctic vegetation species and their biodegradation products. The water-extractable organic matter (WEOM) was produced from C. stellaris (lichen), E. vaginatum (sedge), … URL EndNote PDF Read more... 

36393
He L., Chen W., Fraser R.H., Schmelzer I., Arsenault A., Leblanc S.G., Lovitt J., White H.P., Plante S. & Brodeur A. (2024): Satellite-detected decreases in caribou lichen cover, Cladonia (Cladina) spp., over Eastern Canada during the last three decades - Forest Ecology and Management, 556: 121753 [11 p.]

Caribou lichens, Cladonia (Cladina) spp., are a slow-growing, vital winter forage for caribou that are likely to be influenced by global warming. However, the large-scale response of caribou lichens to changing global climate remains unclear. Here, we derived caribou lichen cover maps for two time periods ∼30 years apart (i.e., the late 1980 s, and 2020 s) using Landsat satellite imagery for a region (0.59 million km2) in Eastern Canada that includes all or portions of several boreal caribou population … URL EndNote Read more... 

36394
Liang X., Chen W., Jiang B. & Xiao C.-J. (2024): Dibenzofurans from nature: Biosynthesis, structural diversity, sources, and bioactivities - Bioorganic Chemistry, 144: 107107 [17 p.]

Dibenzofurans are a small class of natural products with versatile biological activities that used to be thought to come mainly from lichens and ascomycetes. In fact, they are also distributed widely in higher plants, especially in the families Rosaceae and Myrtaceae. Dibenzofurans and derivatives from lichens and ascomycetes have been well reviewed, but dibenzofurans from all biological sources in nature have not been reviewed. In this review, dibenzofurans from all natural sources have been comprehensively … URL EndNote PDF Read more... 

36395
Kidron G.J., Starinsky A. & Xiao B. (2024): The enigmatic enrichment of potassium and magnesium in runoff and floodwater in the Negev: Do biocrusts hold the key? - Science of The Total Environment, 911: 168753 [12 p.]

Hypothesizing that rock-dwelling (lithobionts) or soil (loess)-dwelling biocrusts may shed light on the phenomena, we conducted sprinkling experiments in the Negev Highlands. Sprinkling was conducted on 4 types of lithobionts: cyanobacteria which inhabit the south-facing bedrock (ENC), epilithic lichens, inhabiting the inclined (EPIi) and the flat (EPIf) north-facing bedrocks, and endolithic lichens (ENL) inhabiting south-facing boulders. Additional sprinkling took place on two types of soil biocrusts, … URL EndNote PDF Read more... 

36397
Wilk K. & Lücking R. (2024): Quantitative integrative taxonomy informs species delimitation in Teloschistaceae (lichenized Ascomycota): the genus Wetmoreana as a case study - IMA Fungus, 15: 9 [42 p.]

The genus Wetmoreana was studied using quantitative integrative taxonomy methods to resolve the genus delimitation and explore its taxonomy diversity at the species level. As a result, the genus Fulgogasparrea is synonymized with Wetmoreana, and the latter includes 15 formally described species, one subspecies, and three further, thus far undescribed species: W. appressa, W. awasthii comb. nov., W. bahiensis sp. nov., W. brachyloba comb. nov., W. brouardii, W. chapadensis comb. nov., W. circumlobata … URL EndNote PDF Read more... 

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