Jeroen J M Geurts

• Doctor
• Senior Researcher at KWR Water Research Institute

Vernatting vormt de basis voor ‘nature-based solutions’ in het veenweidegebied. In dit artikel worden koppelkansen en dilemma’s besproken tussen gewasproductie op natte veenbodems en andere ecosysteemdiensten, zoals klimaatmitigatie, klimaatadaptatie, biodiversiteit en zuivering van water en bodem.

Topsoil removal (TSR) is a management option performed before rewetting drained agricultural peatlands to reduce greenhouse gas (GHG) emissions and remove nutrients. Currently, its common practice to remove 30 to 60 cm of topsoil, which is labor-intensive, costly, and highly disruptive. However, optimal TSR depth for mitigating carbon emissions fro...

Growing productive wetland species on rewetted peatland (paludiculture) is a promising solution to offset carbon loss from drained peatlands. The inlet of nitrogen (N) rich surface water, a proposed method to improve productivity of vegetation, may affect methane (CH4) emissions. This study aims to compare initial CH4 emissions from newly rewetted...

The aim of this document is to outline the preliminary requirements and steps needed to fully establish frameworks for certification systems across Europe, specifically to support and incentivize the restoration of peatlands and to provide a framework for reducing GHG emissions from degraded and mismanaged peatlands on a large scale. This will ensu...

Purpose Paludiculture (crop cultivation in wet peatlands) can prevent carbon and nutrient losses while enabling biomass production. As vegetation in rewetted peatlands is often nitrogen (N) limited, input of N-rich water may promote biomass production and nutrient removal. However, it is unclear how N loading and soil characteristics affect biomass...

Purpose Paludiculture (crop cultivation in wet peatlands) can prevent carbon and nutrient losses while enabling biomass production. As vegetation in rewetted peatlands is often nitrogen (N) limited, input of N rich water may promote biomass production and nutrient removal. However, it is unclear how N loading and soil characteristics affect biomass...

Fertiliser use in agriculture increases the non-point pollution of waters with nitrogen (N) and phosphorus (P). Wetland buffer zones (WBZs) are wetland ecosystems between agricultural lands and water bodies that protect surface waters from non-point source pollution. We assessed how vegetation harvesting within WBZs impacts their N and P removal ef...

Paludiculture, sustainable and climate-smart land use of formerly drained, rewetted organic soils, can produce significant biomass in peatlands whilst potentially restoring several additional wetland services. However, the site conditions that allow maximum biomass production and nutrient removal by paludiculture crops have rarely been studied. We...

https://www.b-ware.eu/sites/default/files/publicaties/LBF-69-01-2_PP_Geurts_et_al_121220.pdf

The future of our peat meadow landscape. About rewetting, ‘optoppen’ (‘layering up’) and peat moss cultivation (Sphagnum farming) The cultivated peat meadow landscape is a characteristic Dutch landscape, but it also provokes serious problems. As a result of severe drainage, the peat soil becomes aerated and decomposes fast, resulting in the emissi...

The use of drained peatlands as dairy grasslands leads to long-term organic matter losses, CO2 emissions and soil subsidence. It also yields grass with increased N and P contents compared to grass grown on mineral soils due to peat mineralisation, which often leads to greater farm surpluses of these elements. Growing Typha latifolia as a forage cro...

Paludiculture, the cultivation of crops on wet or rewetted agricultural peatlands, sustainably integrates productive land use with the provision of multiple ecosystem services. Paludiculture crops thrive under waterlogged conditions that stimulate nitrogen (N) and phosphorus (P) removal from soil and water and convert serious drainage-induced carbo...

As a result of altered land use, water shortage and eutrophication, aquatic and semi-aquatic biodiversity in minerotrophic peatlands has severely declined in The Netherlands. After the improvement of surface water quality following hydrological and other measures, biodiversity is now increasing again in many reserves including former peat extractio...

In this report, an overview of existing and future paludiculture pilots is given, with the main focus on Dutch pilots with Typha and Phragmites. The most important experiences and results from these pilots are presented and information is given about the experimental setting, species and plant parts used, planting density and method, soil type, soi...

Deterioration and restoration of minerotrophic waters in the Dutch peat landscape As a result of altered land use, water shortage and eu- trophication, aquatic and semi-aquatic biodiversi- ty in minerotrophic peatlands has severely declined in The Netherlands. After the improvement of surface water quality following hydrological and other meas- ur...

As a result of altered land use, water shortage and eutrophication, aquatic and semi-aquatic biodiversity in minerotrophic peatlands has severely declined in The Netherlands. After the improvement of surface water quality following hydrological and other measures, biodiversity is now increasing again in many reserves including former peat extractio...

Door natte teelten (paludicultuur) in veenweidepolders kan een productief landschap gekoppeld worden aan groenblauwe diensten. Paludicultuur met lisdodde of riet kan op verschillende manieren bijdragen aan de verbetering van de kwaliteit van het oppervlaktewater, vooral door snelle opname van nutriënten en de daaropvolgende afvoer van biomassa. Doo...

Bodemdaling in veenweidegebieden en aangrenzende moerige gron- den stelt ons voor een grote geofysische en milieutechnische uitda- ging. Op Europese schaal wordt bodemdaling in veengebieden voor- komen door peilverhoging, waar maatschappelijke kosten door CO2-emissies, verlies aan waterveiligheid en stikstofverliezen de baten niet meer kunnen compe...

Lisdodde is een veelbelovend gewas voor natte teelten in Nederland, met verschillende interessante toepassingen. De kosten en kans van slagen van de aanleg van een lisdoddeperceel op een melkveebedrijf zijn dan van essentieel belang. Daarom is in het kader van het project Veen, Voer en Verder op KTC Zegveld een proefveld aangelegd voor het uitteste...

De laagveenplas Terra Nova kampt al jaren met blauwalgenbloei en lage bedekkingen met waterplanten, ondanks jaarlijkse biomanipula%emaatregelen. Een belangrijke oorzaak hiervan is de fosfaatrijke waterbodem met een laag ijzergehalte, die zorgt voor een hoge fosfaatnalevering naar de waterlaag. Om het ijzergehalte van de bodem te verhogen, werd gele...

Eutrophication of shallow lakes in North-West Europe has resulted in cyanobacterial blooms, turbid water, and a decline in submerged macrophytes. Even though external inputs of phosphorus (P) are declining, internal loading of P from the sediment may delay the recovery of these aquatic ecosystems. Iron can be a useful chemical binding agent to comb...

Submerged macrophytes enhance water transparency and aquatic biodiversity in shallow water ecosystems. Therefore, the return of submerged macrophytes is the target of many lake restoration projects. However, at present, north-western European aquatic ecosystems are increasingly invaded by omnivorous exotic crayfish. We hypothesize that invasive cra...

In wetland soils and underwater sediments of marine, brackish and freshwater systems, the strong phytotoxin sulfide may accumulate as a result of microbial reduction of sulfate during anaerobiosis, its level depending on prevailing edaphic conditions. In this review, we compare an extensive body of literature on phytotoxic effects of this reduced s...

Eutrophication has caused a decline of charophyte species in many shallow lakes in Europe. Even though external inputs of phosphorus are declining, internal loading of P from the sediment seems to delay the recovery of these systems. Iron is a useful chemical binding agent to combat internal phosphorus loading. However, the effects of iron addition...

Eutrophication has caused a decline of charophyte species in many shallow lakes in Europe. Even though external inputs of phosphorus are declining, internal loading of P from the sediment seems to delay the recovery of these systems. Iron is a useful chemical binding agent to combat internal phosphorus loading. However, the effects of iron addition...

Eutrophication has caused a decline of charophyte species in many shallow lakes in Europe. Even though external inputs of phosphorus are declining, internal loading of P from the sediment seems to delay the recovery of these systems. Iron is a useful chemical binding agent to combat internal phosphorus loading. However, the effects of iron addition...

Biogeochemical processes affecting surface water quality in ditches and ponds of Dutch peat meadows are described and applied under two scenarios: low and high water table. Dutch peat meadows are generally sulphur-rich due to marine influences in the past. In addition the peat top-layer (0-50 cm) is overloaded with phosphorus due to agricultural ac...

Question: Dutch fen areas have become embedded in intensively used landscapes, resulting in biodiversity loss. Hence, plant species that colonize open water inducing the formation of species-rich floating peat mats have disappeared. Despite many restoration efforts, they have not returned. Is natural succession towards floating mats impeded by site...

Riparian ecosystems can harbor great diversity and provide important ecological functions such as improving water quality. The impact of eutrophication on riparian ecosystems, however, is unclear. We conducted a mesocosm experiment to study the effects of nutrient loading on riparian ecosystems. We specifically asked whether the source of nutrients...

Worldwide, fens and peat lakes that used to be peat-forming systems have become a significant source of C, N and P due to increased peat decomposition. To test the hypothesis that net nutrient mineralization rates may be uncoupled from decomposition rates, we investigated decomposition and net mineralization rates of nutrients in relation to sedime...

Worldwide, fens and peat lakes are being threatened by multiple environmental problems, such as desiccation, eutrophication, pollution and global warming. This has led to increased peat decomposition and sludge production, disappearance of macrophyte species, biodiversity losses and hampered terrestrialization. This thesis emphasizes the essential...

Both eutrophication and SO4 pollution can lead to higher availability of nutrients and potentially toxic compounds in wetlands. To unravel the interaction between the level of eutrophication and toxicity at species and community level, effects of SO4 were tested in nutrient-poor and nutrient-rich fen mesocosms. Biomass production of aquatic and sem...

1. Globally, freshwater wetlands, including fen waters, are suffering from biodiversity loss due to eutrophication, water shortage and toxic substances, and to mitigate these pressures numerous restoration projects have been launched. Water quality data are generally used to evaluate the chances of reestablishment of aquatic vegetation in fen water...

Dit rapport presenteert de resultaten en conclusies van het onderzoek aan laagveenwateren binnen het kader van het Overlevingsplan Bos en Natuur in de eerste fase (obn, 2003-2006). In Hoofdstuk 3 wordt een overzicht gegeven van de onderzoekslocaties. Vervolgens worden in Hoofdstuk 4 de belangrijkste bevindingen van het correlatieve onderzoek naar d...