Inst. Ökologie

102 Items

Recent Submissions
Advanced In Situ Soil Water Sampling System for Monitoring Solute Fluxes in the Vadose Zone

Reck, Arne ; Paton, Eva ; Kluge, Björn (2019-07-25)

To estimate potential risks of groundwater contamination, national and international environmental legislation stipulates standard values referred to pollutant contents in the soil and more rarely referred to loads in the soil leachate. Although in situ soil leachate analysis yields more realistic drainage water quality estimates than soil contamination level–derived estimates, there is no exis...

The Human Influence Experiment (Part 2): Guidelines for Improved Mapping of Local Climate Zones Using a Supervised Classification

Verdonck, Marie-leen ; Demuzere, Matthias ; Bechtel, Benjamin ; Beck, Christoph ; Brousse, Oscar ; Droste, Arjan ; Fenner, Daniel ; Leconte, François ; Van Coillie, Frieke (2019-02-28)

Since 2012, Local Climate Zones (LCZ) have been used for numerous studies related to urban environment. In 2015, this use amplified because a method to map urban areas in LCZs was introduced by the World Urban Database and Access Portal Tools (WUDAPT). However in 2017, the first HUMan INfluence EXperiment showed that these maps often have poor or low quality. Since the maps are used in differen...

Tree Cover Mediates the Effect of Artificial Light on Urban Bats

Straka, Tanja M. ; Wolf, Maritta ; Gras, Pierre ; Buchholz, Sascha ; Voigt, Christian C. (2019-03-27)

With urban areas growing worldwide, so does artificial light at night (ALAN) which negatively affects many nocturnal animals, including bats. The response of bats to ALAN ranges from some opportunistic species taking advantage of insect aggregations around street lamps, particularly those emitting ultraviolet (UV) light, to others avoiding lit areas at all. Tree cover has been suggested to miti...

How to Bloom the Green Desert: Eucalyptus Plantations and Native Forests in Uruguay beyond Black and White Perspectives

Pozo, Paola ; Säumel, Ina (2018-10-06)

The ongoing debate on the boon or bane of monocultural timber plantations demonstrates the need to develop alternative approaches that achieve forest productivity while conserving biodiversity. We assessed the diversity of tree species in native forests and in Eucalyptus plantations, and evaluated the potential use of native species to enhance plantation management. For this purpose, we establi...

Quality of Crowdsourced Data on Urban Morphology—The Human Influence Experiment (HUMINEX)

Bechtel, Benjamin ; Demuzere, Matthias ; Sismanidis, Panagiotis ; Fenner, Daniel ; Brousse, Oscar ; Beck, Christoph ; Van Coillie, Frieke ; Conrad, Olaf ; Keramitsoglou, Iphigenia ; Middel, Ariane ; Mills, Gerald ; Niyogi, Dev ; Otto, Marco ; See, Linda ; Verdonck, Marie-Leen (2017-05-09)

The World Urban Database and Access Portal Tools (WUDAPT) is a community initiative to collect worldwide data on urban form (i.e., morphology, materials) and function (i.e., use and metabolism). This is achieved through crowdsourcing, which we define here as the collection of data by a bounded crowd, composed of students. In this process, training data for the classification of urban structures...

Effects of bank filtration on lake ecosystems

Gillefalk, Mikael (2019)

With ongoing population growth and increasing urbanisation the pressure on urban water bodies increases. In 2015 four billion people, more than half of the world’s population, lived in cities. The task to provide them with safe drinking water is massive. In case of severe pollution the production of drinking water using surface water can be risky and expensive. The preferred raw water source is...

Climate Change in Afghanistan Deduced from Reanalysis and Coordinated Regional Climate Downscaling Experiment (CORDEX)—South Asia Simulations

Aich, Valentin ; Akhundzadah, Noor Ahmad ; Knuerr, Alec ; Khoshbeen, Ahmad ; Hattermann, Fred ; Paeth, Heiko ; Scanlon, Andrew ; Paton, Eva Nora (2017-05-23)

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Urbanisation modulates plant-pollinator interactions in invasive vs. native plant species

Buchholz, Sascha ; Kowarik, Ingo (2019-04-23)

Pollination is a key ecological process, and invasive alien plant species have been shown to significantly affect plant-pollinator interactions. Yet, the role of the environmental context in modulating such processes is understudied. As urbanisation is a major component of global change, being associated with a range of stressors (e.g. heat, pollution, habitat isolation), we tested whether the ...

Evaluating the Impact of Wastewater Effluent on Microbial Communities in the Panke, an Urban River

Nega, Marcella ; Braun, Burga ; Künzel, Sven ; Szewzyk, Ulrich (2019-04-28)

Pharmaceuticals are consumed in high amounts and can enter as emerging organic compounds in surface waters as they are only partially retained in wastewater treatment plants (WWTPs). Receiving pharmaceuticals may burden the aquatic environment, as they are designed to be bioactive even at low concentrations. Sediment biofilm populations were analyzed in river sediments due to the exposure of an...

Data to Articel: Dissolved organic matter characteristics of deciduous and coniferous forests with variable management: different at the source, aligned in the soil

Thieme, Lisa ; Graeber, Daniel ; Hofmann, Diana ; Bischoff, Sebastian ; Schwarz, Martin T. ; Steffen, Bernhard ; Meyer, Ulf-Niklas ; Kaupenjohann, Martin ; Wilke, Wolfgang ; Michalzik, Beate ; Siemens, Jan (2019-03-21)

This dataset contains the data to the article: "Dissolved organic matter characteristics of deciduous and coniferous forests with variable management: different at the source, aligned in the soil" published in Biogeosciences

Perspectives and ambitions of interdisciplinary connectivity researchers

Paton, Eva Nora ; Smetanová, Anna ; Krueger, Tobias ; Parsons, Anthony (2019-01-29)

The article reviews research perspectives and ambitions of connectivity scientists in order to facilitate and improve joint connectivity research efforts across disciplinary boundaries. The assessment of four very different viewpoints (pragmatic, conceptual, epistemological and ontological) on connectivity signifies the diversity of thought and practice in the connectivity community and calls f...

Estimating Pore Water Electrical Conductivity of Sandy Soil from Time Domain Reflectometry Records Using a Time-Varying Dynamic Linear Model

Aljoumani, Basem ; Sanchez-Espigares, Jose A. ; Wessolek, Gerd (2018-12-13)

Despite the importance of computing soil pore water electrical conductivity (σp) from soil bulk electrical conductivity (σb) in ecological and hydrological applications, a good method of doing so remains elusive. The Hilhorst concept offers a theoretical model describing a linear relationship between σb, and relative dielectric permittivity (εb) in moist soil. The reciprocal of pore water elect...

Initial Effects of Differently Treated Biogas Residues from Municipal and Industrial Wastes on Spring Barley Yield Formation

Prays, Nadia ; Kaupenjohann, Martin (2016)

Soil application of biogas residues (BGRs) is important for closing nutrient cycles. This study examined the efficiency and impact on yields and yield formation of solid-liquid separated residues from biodegradable municipal and industrial wastes (bio-waste) in comparison to complete BGRs, nitrification inhibitor, agricultural BGRs, mineral fertilizer and unfertilized plots as control. The expe...

[Book Review:] Fritz Reiheis, Die Kreativität der Langsamkeit. Neuer Wohlstand durch Entschleunigung, Darmstadt: Wissenschaftliche Buchgesellschaft, 1996

Hofmeister, Sabine (1998)

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[Book Review:] M. Held and K. Geissler (Eds.): Ökologie der Zeit – Vom Finden der rechten Zeitmasse, Stuttgart, 1993

Hofmeister, Sabine (1994)

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Cultural and environmental drivers of plant diversity in Bengaluru city, India

Gopal, Divya (2018)

Social and cultural processes play key roles in shaping urban green spaces, enabling urban residents from diverse backgrounds to interact with and experience nature. A better understanding of biocultural diversity and cultural ecosystem services (ES) is, therefore, important to maintain the urban green infrastructure in rapidly growing megacities, particularly in developing countries where econ...

New Products of Defense Secretion in South East Asian Whip Scorpions (Arachnida: Uropygi: Thelyphonida)

Haupt, Joachim ; Müller, Frank (2004)

Secretion products from the opisthosomal defense gland of south east Asian whip scorpions were identified for the first time by gas-chromatography and mass-spectrometry. Specimens of the genera Hypoctonus, Typopeltis and Ginosigma were tested. While some ingredients are present in large concentrations, others are possibly only side products and may be synthesized more incidentally. For this rea...

Purpose-designed technogenic materials for sustainable urban greening

Flores Ramírez, Eleonora (2018)

Background: Urban green areas provide a number of desirable ecosystem services for the environment and city dwellers. However, the substrate preparation for the greenery installation mostly implies the mining and erosion of valuable natural soils. Therefore, the objective of this work is to design a Technosol based on a mixture of mainly recycled materials, to sustain vegetation and to lower t...

Physical influence of microbial communities on the structure and occlusion of particulate organic matter in a sandy agricultural soil

Büks, Frederick (2018)

Soil aggregate stability is an integral marker of soil fertility. Well aggregated soil contributes to high rootability, a proper water and aeration regime, resistance against compaction and erosion as well as storage capability of organic carbon. The aggregation of soil primary particles and microaggregates is promoted not only by a large variety of physico-chemical but also biological interact...

Quality control for crowdsourced data from CWS

Grassmann, Tom ; Napoly, Adrien ; Meier, Fred ; Fenner, Daniel (2018)

This package performs a quality control (QC) and filters suspicious data from citizen weather stations (CWS). It was designed for hourly air temperature data from Netatmo stations but should work with any normally-distributed data.