Search

In deze uitgave: De inrichting van de tuin biedt genoeg mogelijkheden om er later volop van te kunnen genieten; enkele tips. Een groene tuin is niet alleen aantrekkelijker, maar de aanleg is goedkoper dan bij een tuin met veel tegels; we geven enkele rekenvoorbeelden. Een groene tuin, dus met planten, struiken en bomen, is belangrijk voor onze gezondheid. Uit wetenschappelijk onderzoek is vast komen te staan dat voor vrij veel aandoeningen een tuin gunstig blijkt te zijn.

Advies, kennis, inspirerende voorbeelden - In het eerste deel van Aan de slag met … Biodiversiteit vertelt Eddy Schabbink, biodiversiteitsexpert bij IPC Groene Ruimte, over de noodzaak voor gemeentelijke overheden – die nu vooral sectoraal werken – om samen te werken; niet alleen intern tussen afdelingen, maar ook met waterschappen, woningcorporaties en provincies. Gemeenten moeten daarnaast volgens Schabbink zorgen dat biodiversiteit in de omgevingsplannen en verordeningen verankerd wordt. In het tweede deel komt vooral de dagelijkse praktijk aan bod en worden de diverse mogelijkheden voor gemeenten beschreven om biodiversiteit te bevorderen. Zoals het stimuleren van bodemleven, het aanpakken van de waterhuishouding, ecologische verbindingszones en groene daken. Ook worden planten genoemd die kunnen bijdragen aan biodiversiteit en welke locaties in de stad geschikt zijn voor groene initiatieven. De inbreng van burgers bij vergroening van hun leefomgeving krijgt eveneens aandacht. Het laatste deel van het boek beschrijft zes praktijkvoorbeelden van gemeenten (onder meer Den Haag, Assen en Middelburg) die herkenbare voorbeelden, oplossingen en tips geven om biodiversiteit te verhogen. Door het boek heen staan citaten van onder anderen Louise Vet (voorzitter Stichting Deltaplan Biodiversiteitsherstel), Maarten Loeffen (directeur Stadswerk) en Wout Veldstra (voorzitter Stichting Steenbreek).

[EN] An integrated study including magnetostratigraphy, larger benthic foraminifera and calcareous nannofossil biostratigraphy is presented herein. This work was performed in shallow marine siliciclastics rich in larger foraminifera, around the Ypresian/Lutetian boundary in the Ésera valley (South-Central Pyrenees). Although the calcareous nannofossil content in the studied interval is low, not allowing a precise Y/L boundary to be recognised, the taxa found are enough to support the chronostratigraphic attribution. Data obtained in the Ésera valley section has improved the knowledge of larger benthic foraminifera (Nummulites and Assilina) distribution through chron C21. SBZ 11 to SBZ 12 transition took place at the lowermost C21r, as shown in previous works. SBZ 12 assemblages extend into C21n, where the SBZ 12 to SBZ 13 boundary occurs. These data, obtained in shallow marine siliciclastic facies, with in situ fauna, results in a shift of the SBZ 12/SBZ 13 boundary to the Lower Lutetian, younger than previously believed. Accordingly, the Ypresian/Lutetian boundary occurs in SBZ 12.

[EN] Despite the large number of magnetostratigraphic studies in the South Pyrenean Basin aiming to calibrate the basin chronostratigraphy and the biostratigraphic scales, the South Eastern Jaca Basin remains unexplored from this perspective, and its relation with the Ainsa Basin is not fully understood. In this work we contribute with new magnetostratigraphic data from the 950m thick Las Bellostas section, located in the northern hinge of the Balzes anticline. Well-proven primary signal (positive fold test and two pseudo-antiparallel polarities) supported by numerous primary data in the surroundings allow us building a reliable local polarity sequence of eight magnetozones (from R1 to N4). Additionally, seven new biostratigraphic samples (Nummulites and Assilina) in the lower part of the section (marine environment) allows tightening the section to the Geomagnetic Polarity Time Scale (GPTS) and proposing a refined age model for the southeastern Jaca Basin. The section starts in the Boltaña Fm., of Cuisian age (Shallow Benthic Zone, SBZ11), is followed by a sedimentary gap from C22n to C20n as witnessed by biostratigraphic data (SBZ11 underneath the hiatus and SBZ16 just atop). The deltaic Sobrarbe Fm can be tracked until the C19n (Late Lutetian). From this point (200m) until the top of the section (950m), at least, the entire C18n chron can be recognized within the molassic Campodarbe Fm (C18n.2n-C18n.1r and C18n.1n) (Bartonian) equivalent to the West to the prodeltaic Arguis marls Fm. The Middle Cusian (SBZ11) to Middle Lutetian (SBZ15) stratigraphic hiatus is, in part, enhanced by the structural position at the hinge of the Balzes anticline. These new chronostratigraphic constraints help refining the W-E and N-S stratigraphic relationships in the eastern Jaca Basin and in the Ainsa Basin. This section also allows us to accurately refine the kinematics of the rotational activity in the eastern External Sierras. The important difference in magnetic declination alon

Flexible bioenergy – as defined in IEA Bioenergy Task 44 - is a bioenergy system that can provide multiple services and benefits to the energy system under varying operating conditions and/or loads. This report compares eleven OECD members in their status and expectation on flexible bioenergy. This includes Australia, Austria, Denmark, Finland, Germany, Ireland, Italy, Netherlands, Sweden, Switzerland and the United States of America. The actual role of bioenergy in the different countries strongly varies between sectors and countries, from only some percent up to more than 30% of the final energy demand. The heating and cooling sector is of major relevance today, and the expectation of varying renewable energies in the electricity sector lead to additional demand for flexibility. However, the power sector has a major impact in the perception of energy transition. While most of the countries are still in the decision making for climate neutral energy provision systems towards 2050 at the latest, the consideration of flexible bioenergy is still in an early stage. Dedicated chances for flexible bioenergy are seen in the substitution of fossil fuels, in support of the energy transition providing flexible electricity, and also in different energy system services such as biofuels provision, renewable heat implementation as well as carbon capture and utilisation options and the reduction of grid operation costs. Even though all surveyed countries are OECD members, the status, policy frame and examples are heterogeneous and give different priorities to short term flexible bioenergy and multiproduct systems and longer-term flexibility services as well. Thus, even under the consideration of the phase of system transformation towards fluctuating renewables, as proposed by IEA (https://www.iea.org/topics/system-integration-of-renewables), we still see different expectations between the countries. To introduce flexible bioenergy there is no blue print at the table. However, mos

The global energy system transition is driven by steep reductions in the generation costs of wind and solar energy as well as political efforts to reduce greenhouse gas emissions. Growing shares of variable renewable energy (VRE) in the energy supply system poses concerns about guaranteeing an uninterrupted supply of electricity, balancing seasonal imbalances in supply and demand, and providing renewable fuels in all sectors. Bioenergy can play multiple roles, both during the transition phase and in the long-term. Flexible bioenergy concepts have potential to provide low-carbon dispatchable resources in terms of long-term storage, peak demand/back-up and demand response. However, the flexibility of bioenergy as well as attractive business cases motivating for flexibility provision need to be developed. IEA Bioenergy Task 44 aims at creating a clearer picture on the role of bioenergy as a flexible resource. In addition to understanding the technical maturity, market status and R&D needs of different concepts, it is also important to identify the frame conditions affecting the priorisation of the different solutions. The webinar presents the findings on technical options for providing flexibility from bioenergy and framework conditions and expectations in different countries., The global energy system transition is driven by steep reductions in the generation costs of wind and solar energy as well as political efforts to reduce greenhouse gas emissions. Growing shares of variable renewable energy (VRE) in the energy supply system poses concerns about guaranteeing an uninterrupted supply of electricity, balancing seasonal imbalances in supply and demand, and providing renewable fuels in all sectors. Bioenergy can play multiple roles, both during the transition phase and in the long-term. Flexible bioenergy concepts have potential to provide low-carbon dispatchable resources in terms of long-term storage, peak demand/back-up and demand response. However, the flexibility of bioenergy as well as attractive business cases motivating for flexibility provision need to be developed. IEA Bioenergy Task 44 aims at creating a clearer picture on the role of bioenergy as a flexible resource. In addition to understanding the technical maturity, market status and R&D needs of different concepts, it is also important to identify the frame conditions affecting the priorisation of the different solutions. The webinar presents the findings on technical options for providing flexibility from bioenergy and framework conditions and expectations in different countries.