The effects of landscape modifications on the long-term persistence of animal populations

Background: The effects of landscape modifications on the long-term persistence of wild animal populations is of crucial importance to wildlife managers and conservation biologists, but obtaining experimental evidence using real landscapes is usually impossible. To circumvent this problem we used individual-based models (IBMs) of interacting animals in experimental modifications of a real Danish landscape. The models incorporate as much as possible of the behaviour and ecology of four species with contrasting life-history characteristics: skylark (Alauda arvensis), vole (Microtus agrestis), a ground beetle (Bembidion lampros) and a linyphiid spider (Erigone atra). This allows us to quantify the population implications of experimental modifications of landscape configuration and composition. Methodology/Principal Findings: Starting with a real agricultural landscape, we progressively reduced landscape complexity by (i) homogenizing habitat patch shapes, (ii) randomizing the locations of the patches, and (iii) randomizing the size of the patches. The first two steps increased landscape fragmentation. We assessed the effects of these manipulations on the long-term persistence of animal populations by measuring equilibrium population sizes and time to recovery after disturbance. Patch rearrangement and the presence of corridors had a large effect on the population dynamics of species whose local success depends on the surrounding terrain. Landscape modifications that reduced population sizes increased recovery times in the short-dispersing species, making small populations vulnerable to increasing disturbance. The species that were most strongly affected by large disturbances fluctuated little in population sizes in years when no perturbations took place. Significance: Traditional approaches to the management and conservation of populations use either classical methods of population analysis, which fail to adequately account for the spatial configurations of landscapes, or landscape ecology, which accounts for landscape structure but has difficulty predicting the dynamics of populations living in them. Here we show how realistic and replicable individual-based models can bridge the gap between non-spatial population theory and non-dynamic landscape ecology. A major strength of the approach is its ability to identify population vulnerabilities not detected by standard population viability analyses

Integration of ecosystem services into a conceptual spatial planning framework based on a landscape ecology perspective

Context The study of ecosystem services has extended its influence into spatial planning and landscape ecology, the integration of which can offer an opportunity to enhance the saliency, credibility, and legitimacy of landscape ecology in spatial planning issues. Objectives This paper presents a conceptual framework suitable for spatial planning in human dominated environments supported by landscape ecological thinking. It seeks to facilitate the integration of ecosystem services into current practice, including landscape metrics as suitable indicators. Methods A literature review supported the revision of existing open questions pertaining to ecosystem services as well as their integration into landscape ecology and spatial planning. A posterior reflection of the current state-of-the-art was then used as a basis for developing the spatial planning conceptual framework. Results and conclusion The framework is articulated around four phases (characterisation, assessment, design, and monitoring) and three concepts (character, service, and value). It advocates integration of public participation, consideration of “landscape services”, the inclusion of ecosystem disservices, and the use of landscape metrics for qualitative assessment of services. As a result, the framework looks to enhance spatial planning practice by providing: (i) a better consideration of landscape configuration in the supply of services (ii) the integration of anthropogenic services with ecosystem services; (iii) the consideration of costs derived from ecosystems (e.g. disservices); and (iv) an aid to the understanding of ecosystem services terminology for spatial planning professionals and decision makers

From Ecosystem Ecology to Landscape Ecology: a Progression Calling for a Well-founded Research and Appropriate Disillusions

In this paper, 1) a delineation of main theoretical, methodological and applicative issues of landscape ecology, 2) a comparison between landscape and ecosystem ecology, 3) a critical overview of actual limits of landscape ecology, are depicted. We conclude that: a) from a theoretical viewpoint, ecosystem and landscape ecology differ since they deal with ecological topics having very different spatial and temporal scales, b) from a practical standpoint, they deal with dissimilar purposes emerging both from unlike research scales and different approaches, as the interest of landscape ecology is mainly focused on the whole ecological mosaic rather than on single components, in this view assuming an "horizontal" ecological perspective, c) transdisciplinarity is still a work in progress in landscape ecology, d) several research purposes in landscape ecology are far from being reached, e) a bridge lacks between the "horizontal" perspective adopted from landscape ecology and the "vertical" approach distinctive of ecosystem ecology, therefore, they actually behave as detached disciplines. However, in our vision, landscape ecology contains the seeds for becoming a self-contained scientific discipline as well as the interface among the distinct sectors of environmental research and planning

Small Islands Landscape Use Mapping and Its Patches Spatial Structure Analysis at Parang Islands, Karimunjawa National Park, Indonesia

The results of small islands landscape ecology analyses within remote sensing science are not widely discovered on the inferential capabilities of such research. This issue presents a series of papers on the use of landscape ecology techniques to explore the landscape use and its patches spatial structure patterns. The aim of this research are to map the landscape use patches based on GeoeEye-1 high resolution satellite image and to assess its patches spatial structure. This prototype research was conducted at Parang Islands, Karimunjawa National Park that was inhabitant and used for complex anthropogenic activities long time before the national park status establish. Significant accuracy for landscape use map has done using overall accuracy, producer and user accuracy, and Kappa index methods. The analyses focus on the variation and composition of landscape use and the value of its patch spatial structure to dealing with national park policy and management. Keywords: Landscape, spatial structure, remote sensing, GIS, and Karimunjaw

A Holistic Landscape Description Reveals That Landscape Configuration Changes More over Time than Composition: Implications for Landscape Ecology Studies

International audienceBackground: Space-for-time substitution—that is, the assumption that spatial variations of a system can explain and predict the effect of temporal variations—is widely used in ecology. However, it is questionable whether it can validly be used to explain changes in biodiversity over time in response to land-cover changes.Hypothesis: ere, we hypothesize that different temporal vs spatial trajectories of landscape composition and configuration may limit space-for-time substitution in landscape ecology. Land-cover conversion changes not just the surface areas given over to particular types of land cover, but also affects isolation, patch size and heterogeneity. This means that a small change in land cover over time may have only minor repercussions on landscape composition but potentially major consequences for landscape configuration.Methods: sing land-cover maps of the Paris region for 1982 and 2003, we made a holistic description of the landscape disentangling landscape composition from configuration. After controlling for spatial variations, we analyzed and compared the amplitudes of changes in landscape composition and configuration over time.Results: For comparable spatial variations, landscape configuration varied more than twice as much as composition over time. Temporal changes in composition and configuration were not always spatially matched.Significance: The fact that landscape composition and configuration do not vary equally in space and time calls into question the use of space-for-time substitution in landscape ecology studies. The instability of landscapes over time appears to be attributable to configurational changes in the main. This may go some way to explaining why the landscape variables that account for changes over time in biodiversity are not the same ones that account for the spatial distribution of biodiversity

Teaching and learning Landscape Ecology to Landscape Architects in Italy : toward protective, adaptative, redundant landscape design

Some words are more and more used by different disciplines to focus on contemporary challenges, for exampe \u201csustainability\u201d and \u201cresilience\u201d, becoming trendy slogans, but the real understanding of these concepts in Landscape Ecology is necessary to avoid their loss of significance, and to add effectiveness to ecological based projects and actions. The collaborative partnership between Landscape Ecology and Landscape Architecture is a fundamental opportunity. Landscape Ecology is a necessary topic for landscape architects' education and its application becomes a tool for landscape projects. A good landscape architect can play a significative role in the promotion of people's appreciation of landscape in terms of resources (cfr. Almo Farina " theory of resources"). Starting from the experience, of more than 30 years, by the Genoese Landscape Architecture School, from the theoric teaching by Almo Farina and Vittorio Ingegnoli (see Ecofield theory, spatial configuration of functional elements , shifting mosaic, BTC measurement, Landscape Bionomics), to the applicative courses and experimental design of landscapes at different dimensions, the discipline of Landscape Ecology is a clear guide to the understanding of landscape configuration, and of its critical actual aspects. In the actual main Italian Schools of Landscape Architecture (Genoa/Turin/Milan, Florence, Rome, Milan) a fundamental role is given to Landscape Ecology education. Particularly in the Genoa/Turin/Milan Master Degree in Landscape Architecture, the experimental applicative approach to design by Landscape Ecology (in the brilliant courses of Applied Landscape Ecology by Gioia Gibelli and Luigino Pirola, with the help of Applied Botany), gives necessary tools to face the challenges of contemporary society, with particular reference to resources and needs, such as water, food production, ecosystemic services, socio-ecological relations, safetiness of everyday landscapes

Modelling and simulating change in reforesting mountain landscapes using a social-ecological framework

Natural reforestation of European mountain landscapes raises major environmental and societal issues. With local stakeholders in the Pyrenees National Park area (France), we studied agricultural landscape colonisation by ash (Fraxinus excelsior) to enlighten its impacts on biodiversity and other landscape functions of importance for the valley socio-economics. The study comprised an integrated assessment of land-use and land-cover change (LUCC) since the 1950s, and a scenario analysis of alternative future policy. We combined knowledge and methods from landscape ecology, land change and agricultural sciences, and a set of coordinated field studies to capture interactions and feedback in the local landscape/land-use system. Our results elicited the hierarchically-nested relationships between social and ecological processes. Agricultural change played a preeminent role in the spatial and temporal patterns of LUCC. Landscape colonisation by ash at the parcel level of organisation was merely controlled by grassland management, and in fact depended on the farmer's land management at the whole-farm level. LUCC patterns at the landscape level depended to a great extent on interactions between farm household behaviours and the spatial arrangement of landholdings within the landscape mosaic. Our results stressed the need to represent the local SES function at a fine scale to adequately capture scenarios of change in landscape functions. These findings orientated our modelling choices in the building an agent-based model for LUCC simulation (SMASH - Spatialized Multi-Agent System of landscape colonization by ASH). We discuss our method and results with reference to topical issues in interdisciplinary research into the sustainability of multifunctional landscapes

Kajian Ekologi Bentanglahan terhadap Wilayah Usaha Pertambangan Karst di Kabupaten Gunungkidul, Daerah Istimewa Yogyakarta dalam Perspektif Kebencanaan dan Tata Ruang

Landscape ecology is an essential combination of geographical spatial approaches and ecological functional approach. Landscape ecology emphasizes ecological aspect as a study of reciprocal occurrence between organisms and environment, and landscape as spatial configuration of ecological processes. Limestone mining in Gunungkidul District, Special Region of Yogyakarta is activity of natural resource utilization which can create disturbances to protected karst landform. This research aims to : (1) analyze the impact rate of mining to landscape in WUP karst (Mining Business Region) by SLIA (Spatial Landscape Impact Assessment) method; (2) estimates potential volumes of limestone using remote sensing and geographic information system; (3) analyze the impact of karst mining to physical environment in disaster and spatial planning perspectives . The SLIA method is performed by spatial analysis of four assessment factors: landscape fragmentation, surface area, wilderness area reduction, and conservation conflicts. Road network and landuse data are derived from Pleiades imagery which has been validated in field survey by 95 % overall accuracy. The estimation of potential volumes of limestone is involving the Cut and Fill algorithm to TERRASAR-X imagery as BeforeRaster and contour data synthesis with the average depth of mining obtained from field observations as AfterRaster. Disaster and spatial planning perspectives are descriptively analyzed from spatial data of hazards and occurrence of disaster as well as proposed pattern and structure of spatial planning which is overlayed to WUP karst. The SLIA analysis shows that maximum mining activities in WUP can make high impact for natural landscape with 0.8 of 1 SLIA rating. The potential limestone volumes on WUP karst estimated as 597,539,061,6389 m3. Although it has potential provide of economic benefit more than 110 trillion rupiahs, mining activities in the study area may increase the risk of water shortages,landslide, and rock fall also potential agrarian conflicts in spatial planning

Using a landscape ecological perspective to analyze regime shifts in social–ecological systems: a case study on grassland degradation of the Tibetan Plateau

Context Landscape ecology thinking and social–ecological system (SES) thinking investigate human–environment relationships from the perspective of ‘space’ and ‘system’, respectively. To date, empirical landscape ecology studies attempting to understand SES complexities are rare. Objectives Using the Tibetan pastoral landscape as an empirical example, we conceptualize the black-soil formation as SES regime shifts. We seek to illustrate the spatial patterns of black-soil formation in the Tibetan SES, and to reveal their underlying ecological processes. Methods We conducted interdisciplinary research in a Tibetan pastoral village. We obtained quantitative data on historical land-use intensity (LUI) and the associated management narratives. Landsat-based NDVI time series were used to derive a grassland productivity proxy and to reconstruct the process leading to the up-scaling of the regime shift of degradation. Results Important SES features, such as LUI, productivity and degradation risk are heterogeneously distributed in space. Land-use intensification at farm-scales in the 1990s increased landscape-scale degradation risks. Eventually the regime shift of degradation scaled up from the plot level to the landscape level in the 2010s. The time lag was related to the gradual invasion of a native burrowing animal, the plateau pika, which inhabits low-vegetation height pastures. Conclusions Our study shows that landscape ecology thinking provides an important spatial perspective to understanding SES complexities. The finding that unfavorable SES regime shifts are strongly linked across spatial scales implies that an ‘entry point’ into an adaptive management circle should be initiated when local-scale regime shifts are perceived and interpreted as early warning signals