Jörg Löffler
Datos Biográficos
| ID | 6017263 |
|---|---|
| NOMBRE | Jörg Löffler |
| NOMBRES | Jörg |
| APELLIDO | Löffler |
| FIRMA | LÖFFLER J |
| AFILIACIONES | University of Bonn |
| ORCID | 0000-0002-9320-6168 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 23 |
| TOTAL DE CITAS | 9 |
| TOTAL COMO AUTOR | 23 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2000 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2025 |
| ÍNDICE H | 1 |
Synthesis on growth patterns and mechanisms in Mediterranean-alpine shrubs
In the context of open questions on the adaptability of alpine ecosystems to future global warming, we studied three Mediterranean-alpine shrub species using dendrometers. Here, we synthesize our research approach and the main findings from three previously published articles. Under climate change, cold-adapted Mediterranean-alpine shrubs might become exposed to severe summer droughts and milder winters. However, neither the physiological strateg…
Annual ring widths in the arctic-alpine dwarf-shrub species Betula Nana — Dataset from long-term alpine ecosystem research in Central Norway (LTAER-NO)
Here we present a Data Paper with microscopically measured data on ring widths of the arctic-alpine dwarf shrub species Betula nana L. from Central Norway. We intend to continuously update the dataset in the future with further ring width measurements of this widespread shrub species
From the question how to act in a sustainable manner, back to the question why we act unsustainably
We appreciate the opportunity to respond to Yttredal et al.'s (2024) commentary on ''Fractal Approaches to Scaling Transformations to Sustainability'' (O'Brien et al. 2023).Their concern is that the concept of universal values overlooks how social priorities have evolved to work against sustainability principles, proposing that our social brains may be a root cause of unsustainable development.Interestingly, we interpret this research differently…
Annual ring width in the Mediterranean-alpine shrub species Cytisus galianoi - dataset from long-term alpine ecosystem research in the Sierra Nevada, Spain (LTAER-ES)
This is a datapaper including microscopically measured data of annual ring widths from the Mediterranean-alpine shrub species Cytisus galianoi (Sierra Nevada, Spain). The dataset will be updated with future measurements
Annual ring width in the arctic-alpine dwarf-shrub species Salix herbacea - Dataset from long-term alpine ecosystem research in central Norway (LTAER-NO)
Here, we present a datapaper containing microscopically measured data of annual ring widths in the arctic-alpine dwarf-shrub species Salix herbacea (central Norway). The dataset will be updated with future measurements
Dataset from long-term air quality monitoring in the World Natural Heritage Geirangerfjord, Western Norway (AQM-G)
Here, we present a datapaper containing observational air quality and meteorological data related to our long-term air quality monitoring program at the UNESCO Natural World Heritage Site Geirangerfjord, Western Norway. The dataset will be updated with future data
On growth patterns and mechanisms in arctic-alpine shrubs
Arctic-alpine ecosystems are considered hot-spots of environmental change, with rapidly warming conditions causing massive alterations in vegetational structure. These changes and their environmental controls are highly complex and variable across spatial and temporal scales. Yet, despite their numerous implications for the global climate system, the underlying physiological processes and mechanisms at the individual plant scale are still little …
Dendrometer measurements of Mediterranean-alpine dwarf shrubs and micro-environmental drivers of plant growth – Dataset from long-term alpine ecosystem research in the Sierra Nevada, Spain (LTAER-ES)
Here, we present measurement data of stem diameter variability of three common woody plants, monitored in the Mediterranean-alpine biome for six consecutive years (2015–2020). These focal species (Astragalus granatensis, Cytisus galianoi, and Genista versicolor) are abundant across the Sierra Nevada mountain chain (Southern Spain) and will potentially be affected by severe future climatic changes predicted for the region, including increased arid…
Dendrometer measurements of arctic-alpine dwarf shrubs and micro-environmental drivers of plant growth - Dataset from long-term alpine ecosystem research in central Norway
Here, we present fine-scale measurements of stem diameter variation from three common arctic-alpine dwarf-shrub species monitored in two mountain regions of Central Norway. All three species (Betula nana, Empetrum nigrum ssp. hermaphroditum, and Phyllodoce caerulea) are abundant within the studied regions and highly important contributors to potential future arctic-alpine vegetation shifts. A profound understanding of their radial growth patterns…
Aspects of Late Weichselian deglaciation in South Norway
Contrasting shrub species respond to early summer temperatures leading to correspondence of shrub growth patterns
The Arctic-alpine biome is warming rapidly, resulting in a gradual replacement of low statured species by taller woody species in many tundra ecosystems. In northwest North America, the remotely sensed normalized difference vegetation index (NDVI), suggests an increase in productivity of the Arctic and alpine tundra and a decrease in productivity of boreal forests. However, the responses of contrasting shrub species growing at the same sites to c…
A warmer and greener cold world
The Arctic and alpine biome is rapidly warming, which might be causing an encroachment of relatively tall woody shrub vegetation into tundra ecosystems, which will probably result in an overall positive feedback to climate warming. This encroachment is, however, believed to remain limited to the relatively warm parts of the biome, where taller shrubs may displace shorter species. Still, climate sensitivity of shrub growth strongly differs between…
Schmidt-hammer exposure-age dating (SHD) performed on periglacial and related landforms in Opplendskedalen, Geirangerfjellet, Norway
Schmidt-hammer exposure-age dating (SHD) was applied to a variety of boulder-dominated periglacial landforms in an attempt to establish a local mid-/late-Holocene chronology for the Geirangerfjellet in South Norway. Landform ages were obtained by application of a local calibration curve for Schmidt hammer R-values based on young and old control points comprising fresh road cuts and a bedrock surface in proximity to the study area, respectively. T…
Broad-scale assumptions on available pasture resources and reindeer’s habitat preferences shown to be decoupled from ecological reality of arctic-alpine landscapes
Deepened winter snow increases stem growth and alters stem δ 13 C and δ 15 N in evergreen dwarf shrub Cassiope tetragona in high-arctic Svalbard tundra
nDeeper winter snow is hypothesized to favor shrub growth and may partly explain the shrub expansion\nobserved in many parts of the arctic during the last decades, potentially triggering biophysical\nfeedbacks including regional warming and permafrost thawing.Weexperimentally tested the effects\nof winter snow depth on shrub growth and ecophysiology by measuring stem length and stem\nhydrogen (δ2H), carbon (δ13C), nitrogen (δ15N) and oxygen (δ18O…
Snow cover determines the ecology and biogeography of spiders (Araneae) in alpine tundra ecosystems
This study addresses the spatial distribution of spiders (Araneae) in relation to their environment along multiple ecological and biogeographical gradients. Two study regions representing considerable variation in the alpine climate were sampled for epigeal spiders using pitfall traps: one in the oceanic region and one in the continental region of Norway. We aimed to identify the driving forces for spider species annidation in an alpine tundra ec…
Climate Change, Land Use Conflicts, Predation and Ecological Degradation as Challenges for Reindeer Husbandry in Northern Europe
Historicism, New
Mountain ecosystem response to global change
Mountain ecosystems are commonly regarded as being highly sensitive to global change. Due to the system complexity and multifaceted interacting drivers, however, understanding current responses and predicting future changes in these ecosystems is extremely difficult. We aim to discuss potential effects of global change on mountain ecosystems and give examples of the underlying response mechanisms as they are understood at present. Based on the de…
Dynamics and driving forces of treeline fluctuation and regeneration in Central Norway during the past decades
The climatologic significance of topography, altitude and region in high mountains – A survey of oceanic-continental differentiations of the Scandes
Within the discussion of climate change (HOUGHTON et al. 1990; OSTENDORF et al. 1999; WALTHER et al. 2002) the sensitive high mountain ecosystems could act as indicators for ecosystem response to global warming (BENISTON a. INNES 1998; ELIASSEN a. GRAMMELTVEDT 1990). This may induce a change of species distribution and biodiversity in high mountain landscapes (CALLAGHAN et al. 1993; CHAPIN et al. 2000) and finally lead to a replacement of alpine …
Micro-climatic determination of vegetation patterns along topographical, altitudinal, and oceanic-continental gradients in the high mountains of Norway
High Mountain Ecosystems and Landscape Degradation in Northern Norway
The influence of reindeer pasturing on high mountain ecosystems in northern Norway was investigated using a landscape-ecological analysis. The most visible impacts of overgrazing are on the vegetation. In addition, soils and humus have been changed due to morphodynamic processes induced to a large extent by reindeer pasturing. Degradation of the high mountain landscapes within the last 30 years is described on 3 spatial levels: large-scale effect…
Climate Change, Land Use Conflicts, Predation and Ecological Degradation as Challenges for Reindeer Husbandry in Northern Europe
From the question how to act in a sustainable manner, back to the question why we act unsustainably
We appreciate the opportunity to respond to Yttredal et al.'s (2024) commentary on ''Fractal Approaches to Scaling Transformations to Sustainability'' (O'Brien et al. 2023).Their concern is that the concept of universal values overlooks how social priorities have evolved to work against sustainability principles, proposing that our social brains may be a root cause of unsustainable development.Interestingly, we interpret this research differently…
Schmidt-hammer exposure-age dating (SHD) performed on periglacial and related landforms in Opplendskedalen, Geirangerfjellet, Norway
Schmidt-hammer exposure-age dating (SHD) was applied to a variety of boulder-dominated periglacial landforms in an attempt to establish a local mid-/late-Holocene chronology for the Geirangerfjellet in South Norway. Landform ages were obtained by application of a local calibration curve for Schmidt hammer R-values based on young and old control points comprising fresh road cuts and a bedrock surface in proximity to the study area, respectively. T…
High Mountain Ecosystems and Landscape Degradation in Northern Norway
The influence of reindeer pasturing on high mountain ecosystems in northern Norway was investigated using a landscape-ecological analysis. The most visible impacts of overgrazing are on the vegetation. In addition, soils and humus have been changed due to morphodynamic processes induced to a large extent by reindeer pasturing. Degradation of the high mountain landscapes within the last 30 years is described on 3 spatial levels: large-scale effect…
Micro-climatic determination of vegetation patterns along topographical, altitudinal, and oceanic-continental gradients in the high mountains of Norway
The climatologic significance of topography, altitude and region in high mountains – A survey of oceanic-continental differentiations of the Scandes
Within the discussion of climate change (HOUGHTON et al. 1990; OSTENDORF et al. 1999; WALTHER et al. 2002) the sensitive high mountain ecosystems could act as indicators for ecosystem response to global warming (BENISTON a. INNES 1998; ELIASSEN a. GRAMMELTVEDT 1990). This may induce a change of species distribution and biodiversity in high mountain landscapes (CALLAGHAN et al. 1993; CHAPIN et al. 2000) and finally lead to a replacement of alpine …
Dynamics and driving forces of treeline fluctuation and regeneration in Central Norway during the past decades
Historicism, New
Mountain ecosystem response to global change
Mountain ecosystems are commonly regarded as being highly sensitive to global change. Due to the system complexity and multifaceted interacting drivers, however, understanding current responses and predicting future changes in these ecosystems is extremely difficult. We aim to discuss potential effects of global change on mountain ecosystems and give examples of the underlying response mechanisms as they are understood at present. Based on the de…
Climate Change, Land Use Conflicts, Predation and Ecological Degradation as Challenges for Reindeer Husbandry in Northern Europe
Snow cover determines the ecology and biogeography of spiders (Araneae) in alpine tundra ecosystems
This study addresses the spatial distribution of spiders (Araneae) in relation to their environment along multiple ecological and biogeographical gradients. Two study regions representing considerable variation in the alpine climate were sampled for epigeal spiders using pitfall traps: one in the oceanic region and one in the continental region of Norway. We aimed to identify the driving forces for spider species annidation in an alpine tundra ec…
Deepened winter snow increases stem growth and alters stem δ 13 C and δ 15 N in evergreen dwarf shrub Cassiope tetragona in high-arctic Svalbard tundra
nDeeper winter snow is hypothesized to favor shrub growth and may partly explain the shrub expansion\nobserved in many parts of the arctic during the last decades, potentially triggering biophysical\nfeedbacks including regional warming and permafrost thawing.Weexperimentally tested the effects\nof winter snow depth on shrub growth and ecophysiology by measuring stem length and stem\nhydrogen (δ2H), carbon (δ13C), nitrogen (δ15N) and oxygen (δ18O…
Broad-scale assumptions on available pasture resources and reindeer’s habitat preferences shown to be decoupled from ecological reality of arctic-alpine landscapes
Contrasting shrub species respond to early summer temperatures leading to correspondence of shrub growth patterns
The Arctic-alpine biome is warming rapidly, resulting in a gradual replacement of low statured species by taller woody species in many tundra ecosystems. In northwest North America, the remotely sensed normalized difference vegetation index (NDVI), suggests an increase in productivity of the Arctic and alpine tundra and a decrease in productivity of boreal forests. However, the responses of contrasting shrub species growing at the same sites to c…
A warmer and greener cold world
The Arctic and alpine biome is rapidly warming, which might be causing an encroachment of relatively tall woody shrub vegetation into tundra ecosystems, which will probably result in an overall positive feedback to climate warming. This encroachment is, however, believed to remain limited to the relatively warm parts of the biome, where taller shrubs may displace shorter species. Still, climate sensitivity of shrub growth strongly differs between…
Schmidt-hammer exposure-age dating (SHD) performed on periglacial and related landforms in Opplendskedalen, Geirangerfjellet, Norway
Schmidt-hammer exposure-age dating (SHD) was applied to a variety of boulder-dominated periglacial landforms in an attempt to establish a local mid-/late-Holocene chronology for the Geirangerfjellet in South Norway. Landform ages were obtained by application of a local calibration curve for Schmidt hammer R-values based on young and old control points comprising fresh road cuts and a bedrock surface in proximity to the study area, respectively. T…
Aspects of Late Weichselian deglaciation in South Norway
Dendrometer measurements of arctic-alpine dwarf shrubs and micro-environmental drivers of plant growth - Dataset from long-term alpine ecosystem research in central Norway
Here, we present fine-scale measurements of stem diameter variation from three common arctic-alpine dwarf-shrub species monitored in two mountain regions of Central Norway. All three species (Betula nana, Empetrum nigrum ssp. hermaphroditum, and Phyllodoce caerulea) are abundant within the studied regions and highly important contributors to potential future arctic-alpine vegetation shifts. A profound understanding of their radial growth patterns…
On growth patterns and mechanisms in arctic-alpine shrubs
Arctic-alpine ecosystems are considered hot-spots of environmental change, with rapidly warming conditions causing massive alterations in vegetational structure. These changes and their environmental controls are highly complex and variable across spatial and temporal scales. Yet, despite their numerous implications for the global climate system, the underlying physiological processes and mechanisms at the individual plant scale are still little …
Dendrometer measurements of Mediterranean-alpine dwarf shrubs and micro-environmental drivers of plant growth – Dataset from long-term alpine ecosystem research in the Sierra Nevada, Spain (LTAER-ES)
Here, we present measurement data of stem diameter variability of three common woody plants, monitored in the Mediterranean-alpine biome for six consecutive years (2015–2020). These focal species (Astragalus granatensis, Cytisus galianoi, and Genista versicolor) are abundant across the Sierra Nevada mountain chain (Southern Spain) and will potentially be affected by severe future climatic changes predicted for the region, including increased arid…
Annual ring width in the Mediterranean-alpine shrub species Cytisus galianoi - dataset from long-term alpine ecosystem research in the Sierra Nevada, Spain (LTAER-ES)
This is a datapaper including microscopically measured data of annual ring widths from the Mediterranean-alpine shrub species Cytisus galianoi (Sierra Nevada, Spain). The dataset will be updated with future measurements
Annual ring width in the arctic-alpine dwarf-shrub species Salix herbacea - Dataset from long-term alpine ecosystem research in central Norway (LTAER-NO)
Here, we present a datapaper containing microscopically measured data of annual ring widths in the arctic-alpine dwarf-shrub species Salix herbacea (central Norway). The dataset will be updated with future measurements
Dataset from long-term air quality monitoring in the World Natural Heritage Geirangerfjord, Western Norway (AQM-G)
Here, we present a datapaper containing observational air quality and meteorological data related to our long-term air quality monitoring program at the UNESCO Natural World Heritage Site Geirangerfjord, Western Norway. The dataset will be updated with future data
Annual ring widths in the arctic-alpine dwarf-shrub species Betula Nana — Dataset from long-term alpine ecosystem research in Central Norway (LTAER-NO)
Here we present a Data Paper with microscopically measured data on ring widths of the arctic-alpine dwarf shrub species Betula nana L. from Central Norway. We intend to continuously update the dataset in the future with further ring width measurements of this widespread shrub species
From the question how to act in a sustainable manner, back to the question why we act unsustainably
We appreciate the opportunity to respond to Yttredal et al.'s (2024) commentary on ''Fractal Approaches to Scaling Transformations to Sustainability'' (O'Brien et al. 2023).Their concern is that the concept of universal values overlooks how social priorities have evolved to work against sustainability principles, proposing that our social brains may be a root cause of unsustainable development.Interestingly, we interpret this research differently…
Synthesis on growth patterns and mechanisms in Mediterranean-alpine shrubs
In the context of open questions on the adaptability of alpine ecosystems to future global warming, we studied three Mediterranean-alpine shrub species using dendrometers. Here, we synthesize our research approach and the main findings from three previously published articles. Under climate change, cold-adapted Mediterranean-alpine shrubs might become exposed to severe summer droughts and milder winters. However, neither the physiological strateg…
Geography (20 obras) · Environmental Science (16 obras) · Biology (14 obras) · Ecology (14 obras) · Physical geography (12 obras) · Ecology (11 obras) · Tree-ring climate responses (11 obras) · Climate change and permafrost (10 obras) · Ecosystem (10 obras) · Geology (9 obras)