Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2020
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Authors
L. Genesio Ryan Bright G. Alberti A. Peressotti G. Delle Vedove G. Incerti P. Toscano M. Rinaldi O. Muller F. MigliettaAbstract
Sunlight absorbed at the Earth’s surface is re-emitted as longwave radiation. Increasing atmospheric concentrations of CO2 and other greenhouse gases trap an increasing fraction of such heat, leading to global climate change. Here we show that when a chlorophyll (Chl)-deficient soybean mutant is grown in the field, the fraction of solar-irradiance which is reflected, rather than absorbed, is consistently higher than in commercial varieties. But, while the effect on radiative forcing during the crop cycle at the scale of the individual experimental plot was found to be large (−4.1± 0.6 W m−2 ), global substitution of the current varieties with this genotype would cause a small increase in global surface albedo, resulting in a global shortwave radiative forcing of −0.003 W m−2 , corresponding to 4.4 Gt CO2eq. At present, this offsetting effect would come at the expense of reductions to yields, probably associated with different dynamic of photosynthetic response in the Chl-deficient mutant. The idea of reducing surface-driven radiative forcing by means of Chl-deficient crops therefore requires that novel high-yielding and high-albedo crops are made available soon.
Authors
Ryan BrightAbstract
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Authors
N.G. Hodgetts Lars Söderström T.L. Blockeel S. Caspari M.S. Ignatov N.A. Konstantinova N. Lockhart B. Papp C. Schröck M. Sim-Sim D. Bell N.E. Bell Hans Blom M.A. Bruggeman-Nannenga M. Brugués J. Enroth Kjell Ivar Flatberg R. Garilleti L. Hedenäs D.T. Holyoak V. Hugonnot I. Kariyawasam H. Köckinger J. Kučera F. Lara R.D. PorleyAbstract
Introduction. Following on from work on the European bryophyte Red List, the taxonomically and nomenclaturally updated spreadsheets used for that project have been expanded into a new checklist for the bryophytes of Europe. Methods. A steering group of ten European bryologists was convened, and over the course of a year, the spreadsheets were compared with previous European checklists, and all changes noted. Recent literature was searched extensively. A taxonomic system was agreed, and the advice and expertise of many European bryologists sought. Key results. A new European checklist of bryophytes, comprising hornworts, liverworts and mosses, is presented. Fifteen new combinations are proposed. Conclusions. This checklist provides a snapshot of the current European bryophyte flora in 2019. It will already be out-of-date on publication, and further research, particularly molecular work, can be expected to result in many more changes over the next few years.
Authors
L.T. Ellis Olga M. Afonina I.V. Czernyadjeva L.A. Konoreva A.D. Potemkin V.M. Kotkova M. Alataş Hans Blom M. Boiko R.A. Cabral S. Jimenez D. Dagnino C. Turcato L. Minuto P. Erzberger T. Ezer Olga Galanina N. Hodgetts M.S. Ignatov Elena A. Ignatova S.G. Kazanovsky T. Kiebacher H. Köckinger E.O. Korolkova J. Larraín A.I. Maksimov D. Maity A. Martins M. Sim-Sim F. Monteiro L. Catarino R. Medina M. Nobis Arkadiusz Nowak Ryszard Ochyra I. Parnikoza V. Ivanets V. Plášek M. Philippe P. Saha Md. N. Aziz A.V. Shkurko S. Ştefănuţ G.M. Suárez A. Uygur K. Erkul M. Wierzgoń A. GraulichAbstract
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Authors
L. T. Ellis M. Kh. Alikhadzhiev R. S. Erzhapova Hans Blom H. Bednarek-Ochyra M. Burghart M. J. Cano I.V. Czernyadjeva E. Yu. Kuzmina A. D. Potemkin G. Ya. Doroshina D. Dagnino C. Turcato L. Minuto P. Drapela M. V. Dulin E. Fuertes A. Graulich Kristian Hassel Lars Hedenäs Tom Hellik Hofton Torbjørn Høitomt I. Jukonienė M. Kırmacı N. E. Koroleva Ł. Krajewski M. Kropik H. Kürschner E. V. Kushnevskaya J. Larraín M. Lebouvier A. I. Maksimov O. Yu. Pisarenko V. Plášek Z. Skoupá S. Yu. Popov V. E. Fedosov M. Puglisi A Stebel S. Ştefănut G. Vončina M. Wierzgoń S.-L. GuoAbstract
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Authors
Liz Veerman Karsten Kalbitz Per Gundersen O. Janne Kjønaas Filip Moldan Patrick Schleppi Emiel E. van Loon Jorien Schoorl Wim Wessel Albert TietemaAbstract
Increased anthropogenic nitrogen (N) inputs can alter the N cycle and affect forest ecosystem functions. The impact of increased N deposition depends among others on the ultimate fate of N in plant and soil N pools. Short-term studies (3-18 months) have shown that the organic soil layer was the dominant sink for N. However, longer time scales are needed to investigate the long-term fate of N. Therefore, the soils of four experimental forest sites across Europe were re-sampled similar to 2 decades after labelling with(15)N. The sites covered a wide range of ambient N deposition varying from 13 to 58 kg N ha(-1)year(-1). To investigate the effects of different N loads on(15)N recovery, ambient N levels were experimentally increased or decreased. We hypothesized that: (1) the mineral soil would become the dominant(15)N sink after 2 decades, (2) long-term increased N deposition would lead to lower(15)N recovery levels in the soil and (3) variables related to C dynamics would have the largest impact on(15)N recovery in the soil. The results show that large amounts of the added(15)N remain in the soil after 2 decades and at 2 out of 4 sites the(15)N recovery levels are higher in the mineral soil than in the organic soil. The results show no clear responses of the isotopic signature to the changes in N deposition. Several environmental drivers are identified as controlling factors for long-term(15)N recovery. Most drivers that significantly contribute to(15)N recovery are strongly related to the soil organic matter (SOM) content. These findings are consistent with the idea that much of the added(15)N is immobilized in the SOM. In the organic soil layer, we identify C stock, thickness of the organic layer, N-status and mean annual temperature of the forest sites as most important controlling factors. In the mineral soil we identify C stock, C content, pH, moisture content, bulk density, temperature, precipitation and forest stand age as most important controlling factors. Overall, our results show that these temperate forests are capable of retaining long-term increased N inputs preferably when SOM availability is high and SOM turnover and N availability are low.
Abstract
Protected Areas (PAs) in Tanzania had been established originally for the goal of habitat, landscape and biodiversity conservation. However, human activities such as agricultural expansion and wood harvesting pose challenges to the conservation objectives. We monitored a decade of deforestation within 708 PAs and their unprotected buffer areas, analyzed deforestation by PA management regimes, and assessed connectivity among PAs. Data came from a Landsat based wall-to-wall forest to non-forest change map for the period 2002–2013, developed for the definition of Tanzania’s National Forest Reference Emissions Level (FREL). Deforestation data were extracted in a series of concentric bands that allow pairwise comparison and correlation analysis between the inside of PAs and the external buffer areas. Half of the PAs exhibit either no deforestation or significantly less deforestation than the unprotected buffer areas. A small proportion (10%; n = 71) are responsible for more than 90% of the total deforestation; but these few PAs represent more than 75% of the total area under protection. While about half of the PAs are connected to one or more other PAs, the remaining half, most of which are Forest Reserves, are isolated. Furthermore, deforestation inside isolated PAs is significantly correlated with deforestation in the unprotected buffer areas, suggesting pressure from land use outside PAs. Management regimes varied in reducing deforestation inside PA territories, but differences in protection status within a management regime are also large. Deforestation as percentages of land area and forested areas of PAs was largest for Forest Reserves and Game Controlled areas, while most National Parks, Nature Reserves and Forest Plantations generally retained large proportions of their forest cover. Areas of immediate management concern include the few PAs with a disproportionately large contribution to the total deforestation, and the sizeable number of PAs being isolated. Future protection should account for landscapes outside protected areas, engage local communities and establish new PAs or corridors such as village-managed forest areas.