Landscape Ecology

Christensen, Andreas Aagaard; Brandt, Jesper; Svenningsen, Stig Roar

doi:10.1002/9781118786352.wbieg1168

Cited by 7 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, to generate precipitation maps for the semi-distributed HM, the Thiessen polygon method was applied [66], considering only the two rain gauge stations inside the catchment (Carmen_Met and Carmen_Plu; Figure 1) and the official weather station of INAMHI (Argelia), which is closest to the study catchment. The Thiessen polygon method draws straight lines between the stations and generates perpendicular mediatrices, which will be prolonged until they are cut with other neighboring lines.…”

Section: Preparation Of Input Datamentioning

confidence: 99%

“…The calculation of the mean values for El Carmen watershed resulted in an CN P of 70.20, an Ia of 4.90, and a T LAG of 24.18. As mentioned before, for this HM the precipitation distribution and amounts were calculated by means of the available station data, applying the Thiessen polygon method [66]. This method divides the watershed into different sectors and assigns the measured precipitation amounts of the respective station to its whole area of influence (Carmen_Plu: EVENT 1: 10 mm, EVENT 2: 29 mm, EVENT 3: 25 mm; Carmen_Met: EVENT 1:7 mm, EVENT 2: 43 mm, EVENT 3: 20 mm; Figure 6).…”

Section: Hec-hms Modelmentioning

confidence: 99%

See 1 more Smart Citation

River Discharge Simulation in the High Andes of Southern Ecuador Using High-Resolution Radar Observations and Meteorological Station Data

et al. 2019

View full text Add to dashboard Cite

The prediction of river discharge using hydrological models (HMs) is of utmost importance, especially in basins that provide drinking water or serve as recreation areas, to mitigate damage to civil structures and to prevent the loss of human lives. Therefore, different HMs must be tested to determine their accuracy and usefulness as early warning tools, especially for extreme precipitation events. This study simulated the river discharge in an Andean watershed, for which the distributed HM Runoff Prediction Model (RPM) and the semi-distributed HM Hydrologic Modelling System (HEC-HMS) were applied. As precipitation input data for the RPM model, high-resolution radar observations were used, whereas the HEC-HMS model used the available meteorological station data. The obtained simulations were compared to measured discharges at the outlet of the watershed. The results highlighted the advantages of distributed HM (RPM) in combination with high-resolution radar images, which estimated accurately the discharges in magnitude and time. The statistical analysis showed good to very good accordance between observed and simulated discharge for the RPM model (R2: 0.85–0.92; NSE: 0.77–0.82), whereas for the HEC-HMS model accuracies were lower (R2: 0.68–0.86; NSE: 0.26–0.78). This was not only due to the application of means values for the watershed (HEC-HMS), but also to limited rain gauge information. Generally, station network density in tropical mountain regions is poor, for which reason the high spatiotemporal precipitation variability cannot be detected. For hydrological simulation and forecasting flash floods, as well as for environmental investigations and water resource management, meteorological radars are the better choice. The greater availability of cost-effective systems at the present time also reduces implementation and maintenance costs of dense meteorological station networks.

show abstract

Section: Preparation Of Input Datamentioning

confidence: 99%

Section: Hec-hms Modelmentioning

confidence: 99%

River Discharge Simulation in the High Andes of Southern Ecuador Using High-Resolution Radar Observations and Meteorological Station Data

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Graph theory modeling uses habitat patches as points of connection and links as corridors. This approach could be combined with LCP modeling or circuit theory to derive corridors and habitat patches [63]. In conclusion, the circuit model more accurately approximates how individuals move through real landscapes.…”

Section: Introductionmentioning

confidence: 99%

Designing Ecological Security Patterns Based on the Framework of Ecological Quality and Ecological Sensitivity: A Case Study of Jianghan Plain, China

Yong

2021

IJERPH

View full text Add to dashboard Cite

Researchers and managers of natural resource conservation have increasingly emphasized the importance of maintaining a connected network of important ecological patches to mitigate landscape fragmentation, reduce the decline of biodiversity, and sustain ecological services. This research aimed to guide landscape management and decision-making by developing an evaluation framework to construct ecological security patterns. Taking the Jianghan Plain as the study area, we identified key ecological sources by overlaying the spatial patterns of ecological quality (biodiversity, carbon storage, and water yield) and ecological sensitivity (habitat sensitivity, soil erosion sensitivity, and water sensitivity) using the Integrated Valuation of Environmental Services and Tradeoffs (InVEST) model and the Chinese Soil Loss Equation Function. Ecological corridors were obtained by the least-cost path analysis method and circuit theory. A total of 48 ecological sources (3812.95 km2), primarily consisting of water area, forestland, and cropland, were identified. Ninety-one ecological corridors were derived, with a total length of 2036.28 km. Forty barriers and 40 pinch points with the highest improvement coefficient scores or priority scores were selected. There were 11 priority corridors with very high levels of connectivity improvement potential and conservation priority, occupying 16.15% of the total length of corridors. The overall potential for ecological connectivity is high on the Jianghan Plain. Our framework offers a valuable reference for constructing ecological security patterns and identifying sites for ecological restoration at the regional scale.

show abstract

“…Landscape ecology and food systems are two research areas in which an interdisciplinary, systems-oriented research approach is taken, with the former centred on configuration and functioning of landscapes (Christensen et al 2017) and the latter focussed on the production, processing, retailing, and consumption of food (Ingram 2011). Food system studies evidence an interest in studying the places from which foods originate (Barham and Sylvander 2011; Bowen and Mutersbaugh 2014; Berriss 2019), and some landscape ecological studies have in turn investigated the landscape ecological dynamics around food and agricultural production at large (Benoît et al 2012;Smith et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Linking food systems and landscape sustainability in the Mediterranean region

et al. 2020

View full text Add to dashboard Cite

Context Global dynamics affect the sustainability of agricultural landscapes, but these cross-scale connections are understudied. Therefore, we combine food systems and landscape ecology, focusing on food products that provide a linkage between global consumers and landscapes of production (e.g., Douro Valley wine) which we call landscape products. Objective The aim of this study is to characterise Mediterranean landscape products based on experts’ perceptions by analysing their qualities, farming practices, and value chains, and to identify their ecological, cultural, and socio-economic outcomes in the landscapes of production. Methods Experts with specific knowledge on a landscape product were surveyed by email and their answers analysed using descriptive and ordination statistics. Fifty-four landscape products were characterised. Results Based on the experts’ perceptions, landscape products are high quality products, mainly using traditional knowledge and low intensity farming. They support biocultural diversity in the landscapes of production, but their positive socio-economic outcomes remain limited, with problems of inequity and lack of empowerment among producers and a tendency towards intensification or abandonment of the farming practices. We distinguished three types of products based on their localness and how their qualities were shared with consumers. Local products performed better in the ecological and cultural outcomes and products under certification in the economic. Labelling mechanisms and better organisation of producers could enhance these products and their positive outcomes. Conclusions Combining landscape ecology and food systems research allowed us better understand the outcomes of landscape products in the landscapes of production and suggest pathways for fostering landscape sustainability.

show abstract

Landscape Ecology

Cited by 7 publications

References 11 publications

River Discharge Simulation in the High Andes of Southern Ecuador Using High-Resolution Radar Observations and Meteorological Station Data

River Discharge Simulation in the High Andes of Southern Ecuador Using High-Resolution Radar Observations and Meteorological Station Data

Designing Ecological Security Patterns Based on the Framework of Ecological Quality and Ecological Sensitivity: A Case Study of Jianghan Plain, China

Linking food systems and landscape sustainability in the Mediterranean region

Contact Info

Product

Resources

About