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... Dinitrogen (N₂)-fixing woody plants, mainly alder (Alnus) species, have widely expanded to boreal peatlands. However, little is known about the effect of N₂-fixing plant expansion on soil phosphorus (P) dynamics and its potential mechanisms in these ecosystems. To clarify the response of soil P status to N₂-fixing plant expansion, we compared the differences in aboveground plant biomass, soil tota ...
... Pollen productivity estimate (PPE) is one of the parameters necessary for pollen-based quantitative reconstruction of vegetation in the past. This paper summarizes and reviews the absolute PPEs (aPPEs) that were obtained with the area-based flower counting approach since the 1970s. The data for 23 species of trees are available from Japan and for 22 species of Poaceae from Japan, Spain, and Morocc ...
... The retention of trees bearing tree‐related microhabitats (TreMs) has become an important means of conserving biodiversity in production forests. However, we lack estimates of TreM formation rates and evidence on factors driving TreM formation. Based on the observation of 80,099 living trees from 19 species groups in Europe and Iran, we estimated the probability of TreM occurrence on trees and the ...
Alnus; Castanea sativa; Ophiostoma novo-ulmi; Phytophthora cinnamomi; Ulmus minor; carbon nitrogen ratio; forests; health status; invasive species; limnology; microbial colonization; nitrogen content; nutritive value; phosphorus; plant litter; species richness; streams; tree health; trees
Abstract:
... Invasive tree pathogens threaten forests worldwide, but their effects on streams are poorly understood. Nevertheless, tree infections that lead to changes in the characteristics of litter inputs to streams may affect stream communities and ecosystem processes. We studied cross‐ecosystem effects derived from Phytophthora cinnamomi, Phytophthora ×alni, and Ophiostoma novo‐ulmi infection on Castanea ...
... Lago Trasimeno (central Italy), 10 km wide and < 6m deep, fills a basin of tectonic origin, and is one of Europe's few endorheic lakes. We report on a multidisciplinary stratigraphic study based on seismic reflection profiles and two sediment cores, aimed at providing information on the vegetational, lithological, and climate history of this area. Trace elements, palynology, macrofossils, organic ...
... New host plants and other observations are presented for North American weevils (Coleoptera: Curculionidae) with larvae that feed on leaves. Circaea lutetiana L. (Onagraceae) is confirmed as a larval host of Dietzella zimmermanni (Gyllenhal) and the oviposition habits of this species are described for the first time. Lysimachia borealis (Raf.) U.Manns and Anderb. (Primulaceae) is newly reported as ...
... The late Miocene flora from La Bisbal d'Empordà (Catalonia, Spain) provides significant data for characterising the coastal vegetation from the north-eastern Iberian Peninsula during a key period in Neogene climatic evolution. To this end, a historical leaf collection from La Bisbal d'Empordà was re-examined, analysed from a palaeoenvironmental viewpoint and compared with data provided by the asso ...
... Our knowledge about the Holocene vegetation changes in southern China has been based on the inference from pollen percentages. However, the relationship between pollen percentages and vegetation is non-linear. This may lead to significant bias in real vegetation cover and limit our understanding of land cover changes and its relation to climate and human activities. Here we quantitatively reconstr ...
... Lithological and paleovegetation data from sites in the Elikchan region of the Upper Kolyma basin provide insights into the permafrost history of the mountain valleys of interior Western Beringia. The Elikchan records show a period of peat accumulation between ∼12,000 and 9500 cal BP, which parallels trends in the northern coastal lowlands. This interval corresponds to a time when summers were war ...
Nadine Steckling-Muschack; Hanna Mertes; Isabella Mittermeier; Paul Schutzmeier; Jana Becker; Karl-Christian Bergmann; Stephan Böse-O′Reilly; Jeroen Buters; Athanasios Damialis; Joachim Heinrich; Michael Kabesch; Dennis Nowak; Sandra Walser-Reichenbach; Alisa Weinberger; Mihai Zamfir; Caroline Herr; Susanne Kutzora; Stefanie Heinze
... Pollen threshold values used in public warning systems are intended to inform people of the risk of developing allergy symptoms. However, there is no consensus about which pollen concentrations provoke allergy symptoms. The aim of this systematic review was the evaluation of studies investigating the relationship between pollen concentrations (alder, ash, birch, hazel, mugwort and ragweed) and the ...
... Airborne allergenic pollen affects a significant part of the population and the information on pollen load is a valuable tool for public health prevention. The messages should be provided in a form easily understandable for the population. The study provides new insight for the categorisation of pollen load by defining thresholds solely from aerobiological data. Using the long-term airborne pollen ...
... Metal(loid) pollution of soils has important negative effects on the environment and human health. For the rehabilitation of these soils, some eco-innovative strategies, such as phytoremediation, could be chosen. This practice could establish a plant cover to reduce the toxicity of the pollutants and stabilize the soil, preventing soil erosion and water leaching; this technique is called phytoreme ...
Michiel Stas; Raf Aerts; Marijke Hendrickx; Nicolas Bruffaerts; Nicolas Dendoncker; Lucie Hoebeke; Catherine Linard; Tim Nawrot; An Van Nieuwenhuyse; Jean-Marie Aerts; Jos Van Orshoven; Ben Somers
... Airborne pollen are important aeroallergens affecting human health. Local airborne pollen compositions can pose health-risks for the sensitized population, but at present little is known about fine-scale pollen composition patterns.The overall objective of this study is to determine local variations in tree pollen composition with passive samplers and to identify the surrounding landscape characte ...
... The diversity of cultivable bacteria associated with plants from phytomanaged soils with mixed trace metal (TM) and polycyclic aromatic hydrocarbon (PAH) contamination in Pierrelaye (France) was evaluated. The emphasis was on the cultivable bacterial community since the overall objective is to obtain inoculants to improve the remediation of this type of contaminated site. Root endophytic and rhizo ...
... A new phenol compound, (9S)-9-hydroxy-9-[(2-hydroxyphenyl)methoxy]-nonanoic acid methyl ester (1) was isolated from the stem bark of Alnus mandshurica (Callier) Hand.-Mazz., along with eight known compounds (2–9). The structure of compound 1 was determined by spectral analyses, including HR-ESI-MS, 1D and 2D NMR (COSY, HMQC and HMBC) experiments. All the isolated compounds were reported for first ...
Jesús Rojo; Antonio Picornell; Jose Oteros; Matthias Werchan; Barbora Werchan; Karl-Christian Bergmann; Matt Smith; Ingrid Weichenmeier; Carsten B. Schmidt-Weber; Jeroen Buters
Alnus; Betula; Cupressaceae; Poaceae; Taxaceae; Urticaceae; altitude; climate change; continental climates; grasses; herbaceous plants; pollen; pollen loads; pollen productivity; pollen season; prevalence; public health; respiratory tract diseases; sea level; spring; temperature; time series analysis; water; winter; Alps region; Central European region; Germany
Abstract:
... Climate change affects the reproductive life cycles of plants, including pollen production, which has consequences for allergic respiratory diseases. We examined climatic trends at eight locations in Bavaria, Southern Germany, with pollen time series of at least 10 years (up to 30 years in Munich). Climate change in Bavaria was characterized by a rise in temperature, but not during the winter. The ...
... The information available on the diversity of ant species and their distribution and interaction with forest health in Nepal remains limited. As part of a nationwide project on forest health, we conducted inventories to assess the diversity and distribution of forest ants and their role in forest management in Nepal. Ants were collected from 187 plots of 10 m × 10 m size along the north–south belt ...
Alnus; Technosols; arsenic; biochar; ecosystems; groundwater; hardwood; human health; land restoration; phytoremediation; soil pH; soil pollution; soil remediation; sulfates; toxicity
Abstract:
... The contamination of soil by potentially toxic elements (PTEs) is a problem resulting from various anthropic activities including the exploitation of mines, which determines an accumulation of metal(loid)s in the surrounding area. It is therefore necessary to use remediation techniques to prevent the potential damage to human health and the ecosystem. One of these techniques is phytoremediation, w ...
Michiel Stas; Raf Aerts; Marijke Hendrickx; Andy Delcloo; Nicolas Dendoncker; Sebastien Dujardin; Catherine Linard; Tim Nawrot; An Van Nieuwenhuyse; Jean-Marie Aerts; Jos Van Orshoven; Ben Somers
... The prevalence of pollen allergy has increased due to urbanization, climate change and air pollution. The effects of green space and air pollution on respiratory health of pollen allergy patients are complex and best studied in spatio-temporal detail.We tracked 144 adults sensitized to Betulaceae pollen during the tree pollen season (January–May) of 2017 and 2018 and assessed their spatio-temporal ...
Javed Khan; Abdul Majid; Nausheen Nazir; Mohammad Nisar; Atif Ali Khan Khalil; Muhammad Zahoor; Mohammad Ihsan; Riaz Ullah; Ahmed Bari; Abdul Bari Shah
... Antioxidants isolated from plants have attracted the interest of clinicians and common people to be used for systemic uses rather than synthetic antioxidants because of their active role in maintaining human health with minimal side effects. Alnus nitida (Spach) Endl. is an important medicinal plant native to western Himalaya and is widely distributed throughout Pakistan. The present study evaluat ...