34 results match your criteria: "Institute of Geosciences and Geography[Affiliation]"

The paper describes the production and evaluation of global grassland extent mapped annually for 2000-2022 at 30 m spatial resolution. The dataset showing the spatiotemporal distribution of cultivated and natural/semi-natural grassland classes was produced by using GLAD Landsat ARD-2 image archive, accompanied by climatic, landform and proximity covariates, spatiotemporal machine learning (per-class Random Forest) and over 2.3 M reference samples (visually interpreted in Very High Resolution imagery).

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Heat emitted by buildings and other infrastructure accumulates in the subsurface. This additional heat can cause a pronounced shift in thermal boundary conditions of the important groundwater ecosystem. Shallow groundwater systems in Central Europe are often inhabited by communities of fauna adapted to cold and stable conditions as well as microorganisms, whose activity is dependent on ambient temperatures.

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Root zone soil moisture (RZSM) is crucial for agricultural water management and land surface processes. The 1 km soil water index (SWI) dataset from Copernicus Global Land services, with eight fixed characteristic time lengths (T), requires root zone depth optimization (T) and is limited in use due to its low spatial resolution. To estimate RZSM at 100-m resolution, we integrate the depth specificity of SWI and employed random forest (RF) downscaling.

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The upper mantle is critical for our understanding of terrestrial magmatism, crust formation, and element cycling between Earth's solid interior, hydrosphere, atmosphere, and biosphere. Mantle composition and evolution have been primarily inferred by surface sampling and indirect methods. We recovered a long (1268-meter) section of serpentinized abyssal mantle peridotite interleaved with thin gabbroic intrusions.

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Understanding the dynamics of urban landscapes and their impacts on ecological well-being is crucial for developing sustainable urban management strategies in times of rapid urbanisation. This study assesses the nature and drivers of the changing urban landscape and ecosystem services in cities located in the rainforest (Akure and Owerri) and guinea savannah (Makurdi and Minna) of Nigeria using a combination of remote sensing and socioeconomic techniques. Landsat 8 datasets provided spatial patterns of the normalised difference vegetation index (NDVI) and normalised difference built-up index (NDBI).

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Global indicators of the environmental impacts of invasive alien species and their information adequacy.

Philos Trans R Soc Lond B Biol Sci

May 2024

Securing Antarctica's Environmental Future, School of Biological Sciences, Monash University, Clayton 3800, Victoria, Australia.

Monitoring the extent to which invasive alien species (IAS) negatively impact the environment is crucial for understanding and mitigating biological invasions. Indeed, such information is vital for achieving Target 6 of the Kunming-Montreal Global Biodiversity Framework. However, to-date indicators for tracking the environmental impacts of IAS have been either lacking or insufficient.

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Comparative extinction risk analysis-which predicts species extinction risk from correlation with traits or geographical characteristics-has gained research attention as a promising tool to support extinction risk assessment in the IUCN Red List of Threatened Species. However, its uptake has been very limited so far, possibly because existing models only predict a species' Red List category, without indicating which Red List criteria may be triggered. This prevents such approaches to be integrated into Red List assessments.

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Thermal impact of underground car parks on urban groundwater.

Sci Total Environ

December 2023

Department of Applied Geology, Institute of Geosciences and Geography, Martin Luther University Halle-Wittenberg, Germany.

Built-up areas are known to heavily impact the thermal regime of the shallow subsurface. In many cities, the answer to densification is to increase the height and depth of buildings, which leads to a steady growth in the number of underground car parks. These underground car parks are heated by waste heat from car engines and are typically several degrees warmer than the surrounding subsurface, which makes them a heat source for ambient subsurface and groundwater.

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Groundwater-dependent vegetation (GDV) is essential for maintaining ecosystem functions and services, providing critical habitat for species, and sustaining human livelihoods. However, climate and land-use change are threatening GDV, highlighting the need for harmonised, global mapping of the distribution and extent of GDV. This need is particularly crucial in vulnerable biodiversity hotspots such as the Mediterranean biome.

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Article Synopsis
  • The IUCN Red List faces challenges due to 14% of species being classified as data-deficient (DD), limiting effective conservation policy implementation.
  • Researchers developed a reproducible method to help prioritize reassessment of DD species by analyzing factors like available knowledge and habitat loss.
  • Their study identified 1,907 DD species likely to be reclassified and highlighted 77 species that could be considered near threatened or threatened, enhancing the overall utility of the IUCN Red List.
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Butterfly species respond differently to climate warming and land use change in the northern Alps.

Sci Total Environ

September 2023

Senckenberg German Entomological Institute, D-15374 Müncheberg, Germany; Entomology and Biogeography, Institute of Biochemistry and Biology, Faculty of Science, University Potsdam, D-14476 Potsdam, Germany.

Climate change has a worldwide impact on biodiversity and ecosystem functions, in particular by causing shifts in species distributions and changes in species communities. Here, we analyse altitudinal range shifts of 30,604 lowland butterfly and burnet moth records from 119 species over the past seven decades across the federal state of Salzburg (northern Austria) spanning an altitudinal gradient of >2500 m. For each species, we compiled species-specific traits on their ecology, behaviour, and life-cycle.

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Exploring relationship of soil PTE geochemical and "VIS-NIR spectroscopy" patterns near Cu-Mo mine (Armenia).

Environ Pollut

April 2023

Martin Luther University Halle-Wittenberg, Institute of Geosciences and Geography, Department of Geoecology, Von-Seckendorff-Platz 4, 06120, Halle (Saale), Germany.

PTE contamination of soils remains one of the global environmental concerns. The ways of detecting and monitoring PTE concentrations in soils varies including traditional field sampling accompanied by sample preparation and chemical analysis and state of the art visible and near-infrared (Vis-NIR) spectroscopic approaches. Among the different Machine Learning (ML) to extract soil information from spectra and to explore the relationship between spectral reflectance data and soil PTE content PLSR method is a well-established one to construct a soil PTE estimation model.

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Article Synopsis
  • Anomalies in river flood frequencies, either too many or too few floods, skew flood risk estimates and hinder effective climate adaptation efforts.
  • Observations from 1960-2010 indicate that changes in flood generation processes, rather than just extreme rainfall, significantly contribute to these anomalies across Europe.
  • A small shift in how rainfall interacts with soil (from dry to wet) has increased flood-rich periods in the Atlantic and resulted in flood-poor periods in the Mediterranean, indicating that these trends may worsen with climate change, affecting flood management strategies.
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Many tropical forestlands are experiencing changes in land-tenure regimes, but how these changes may affect deforestation rates remains ambiguous. Here, we use Brazil's land-tenure and deforestation data and quasi-experimental methods to analyze how six land-tenure regimes (undesignated/untitled, private, strictly-protected and sustainable-use protected areas, indigenous, and quilombola lands) affect deforestation across 49 spatiotemporal scales. We find that undesignated/untitled public regimes with poorly defined tenure rights increase deforestation relative to any alternative regime in most contexts.

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Groundwater fauna downtown - Drivers, impacts and implications for subsurface ecosystems in urban areas.

J Contam Hydrol

June 2022

Martin Luther University Halle-Wittenberg, Institute of Geosciences and Geography, Department of Applied Geology, Von-Seckendorff-Platz 3, 06120 Halle, Germany.

Groundwater fauna (stygofauna) comprises organisms that have adapted to the dark subterranean environment over a course of thousands and millions of years, typically having slow metabolisms and long life cycles. They are crucial players in the groundwater of oxygenic aquifers, and contribute to various ecosystem services. Today's knowledge of their sensitivity to anthropogenic impacts is incomplete and a critical analysis of the general relevance of local findings is lacking.

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The International Union for Conservation of Nature (IUCN) Red List of Threatened Species is central in biodiversity conservation, but insufficient resources hamper its long-term growth, updating, and consistency. Models or automated calculations can alleviate those challenges by providing standardised estimates required for assessments, or prioritising species for (re-)assessments. However, while numerous scientific papers have proposed such methods, few have been integrated into assessment practice, highlighting a critical research-implementation gap.

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Irrigated agriculture is a foremost consumer of water resources to fulfill the demand for food and fiber with an increasing population under climate changes; cotton is no exception. Depleting groundwater recharge and water productivity is critical for the sustainable cotton crop yield peculiarly in the semiarid region. This study investigated the water productivity and cotton yield under six different treatments: three sowing methods, i.

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Global and national trends, gaps, and opportunities in documenting and monitoring species distributions.

PLoS Biol

August 2021

Department of Ecology and Evolutionary Biology, Yale University, New Haven, Connecticut, United States of America.

Conserving and managing biodiversity in the face of ongoing global change requires sufficient evidence to assess status and trends of species distributions. Here, we propose novel indicators of biodiversity data coverage and sampling effectiveness and analyze national trajectories in closing spatiotemporal knowledge gaps for terrestrial vertebrates (1950 to 2019). Despite a rapid rise in data coverage, particularly in the last 2 decades, strong geographic and taxonomic biases persist.

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Species community structures respond strongly to habitat changes. These are either driven by nature or human activities. The biota of East African drylands responds highly sensitively to natural and anthropogenic impacts.

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Pesticide inputs into surface waters may cause harmful effects on aquatic life communities and substantially contribute to environmental pollution. The present study aimed at evaluating the input pathways in the Querne/Weida catchment (central Germany) to efficiently target mitigation measures of pesticide losses. Relevant pesticide substances were measured in surface waters in agricultural and urban surroundings and in soil samples within the catchment area.

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Seasonal heat storage is considered as one of the key elements on the path to a low-emission economy. Embedded in local district heating networks, they raise the share of renewable energies and balance out highly fluctuating supplies of e.g.

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Response to the commentary by Pisoni E. and Van Dingenen R. on 'Assessing nitrogen dioxide (NO) levels as a contributing factor to coronavirus (COVID-19) fatality'.

Sci Total Environ

October 2020

The Department of Remote Sensing and Cartography, Institute of Geosciences and Geography, Von-Seckendorff-Platz 4, Room: H4 2.23, Martin-Luther University Halle-Wittenberg, Halle (Saale) 06120, Germany. Electronic address:

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Response to the commentary by Alexandra A. Chudnovsky on ' '.

Sci Total Environ

October 2020

The Department of Remote Sensing and Cartography, Institute of Geosciences and Geography, Von-Seckendorff-Platz 4, Room H4 2.23, Martin-Luther University Halle-Wittenberg, Halle (Saale) 06120, Germany. Electronic address:

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Objectives: To examine three walkability measures (points of interest (POI), transit stations and impedance (restrictions to walking) within 640 m of participant's addresses) in different regions in Germany and assess the relationships between walkability, walking/cycling and body mass index (BMI) using generalised additive models.

Setting: Five different regions and cities of Germany using data from five cohort studies.

Participants: For analysing walking/cycling behaviour, there were 6269 participants of a pooled sample from three cohorts with a mean age of 59.

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Assessing nitrogen dioxide (NO) levels as a contributing factor to coronavirus (COVID-19) fatality.

Sci Total Environ

July 2020

The Department of Remote Sensing and Cartography, Institute of Geosciences and Geography, Von-Seckendorff-Platz 4, Room: H4 2.23, Martin-Luther University Halle-Wittenberg, Halle (Saale) 06120, Germany. Electronic address:

Nitrogen dioxide (NO) is an ambient trace-gas result of both natural and anthropogenic processes. Long-term exposure to NO may cause a wide spectrum of severe health problems such as hypertension, diabetes, heart and cardiovascular diseases and even death. The objective of this study is to examine the relationship between long-term exposure to NO and coronavirus fatality.

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