Trade-offs of landscape connectivity between regional and interregional ecological security patterns in a junction area of Beijing-Tianjin-Hebei region

Applied Geography, Год журнала: 2024, Номер 167, С. 103272 - 103272

Опубликована: Апрель 25, 2024

Язык: Английский

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Circuitscape in Julia: Empowering Dynamic Approaches to Connectivity Assessment

Land, Год журнала: 2021, Номер 10(3), С. 301 - 301

Опубликована: Март 15, 2021

The conservation field is experiencing a rapid increase in the amount, variety, and quality of spatial data that can help us understand species movement landscape connectivity patterns. As interest grows more dynamic representations potential, modelers are often limited by capacity their analytic tools to handle these datasets. Technology developments software high-performance computing rapidly emerging many fields, but uptake within may lag, as our or choice language constrain ability keep pace. We recently updated Circuitscape, widely used analysis tool developed Brad McRae Viral Shah, implementing it Julia, language. In this initial re-code (Circuitscape 5.0) later updates, we improved computational efficiency parallelism, achieving major speed improvements, enabling assessments across larger extents with higher resolution data. Here, reflect on benefits strengthening collaborations computer scientists, extract examples from collection 572 Circuitscape applications illustrate how through decade repeated investment software, have been many, varied, increasingly dynamic. Beyond empowering continued innovations connectivity, expect faster run times will play an important role facilitating co-production stakeholders, increasing likelihood science be incorporated land use decisions.

Язык: Английский

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On The Biogeography of Habitat Islands: The Importance of Matrix Effects, Noncore Species, and Source-Sink Dynamics

The Quarterly Review of Biology, Год журнала: 2021, Номер 96(2), С. 73 - 104

Опубликована: Май 19, 2021

Habitat islands can be defined as distinct patches of habitat surrounded by less contrasting matrix types. In contrast to true island biogeography (traditionally the study water), there have been efforts synthesize myriad studies that published, particularly syntheses cover full range By building on previous work, I aim provide a review in order blueprint for future research islands, including both naturally and anthropogenically fragmented systems. The is organized into three main parts. First, differences between are summarized. Second, theoretical frameworks currently used analyze systems reviewed. Third, findings focused various biological patterns synthesized. Drawing this synthesis, put forward two points regarding improving our understanding biogeography: first, increasing integration properties (including variation across space time) biogeographic models and, second, testing for, implications of, potential prevalence mass effects source-sink dynamics

Язык: Английский

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Combined use of urban Atlas and Corine land cover datasets for the implementation of an ecological network using graph theory within a multi-species approach

Ecological Indicators, Год журнала: 2023, Номер 148, С. 110150 - 110150

Опубликована: Март 20, 2023

Ecological sustainability has recently risen to prominence in scientific research and management applications. Approaches measuring ecological connectivity their application optimize network (EN) design are powerful tools against landscape fragmentation biodiversity loss. We focused on building an EN by identifying the most sensitive areas for within Reggio Calabria (Italy) metropolitan area. also proposed a defragmentation scenario improve obtained EN. The CORINE Land Cover Urban Atlas 2018 were used obtain fine-scale representation of study Ten terrestrial mammal species model following multi-species approach. Dispersal distance, patch size, resistance movement identify patches corridors. Vegetational fractional coverage based three years time series Sentinel-2 red-edge normalized difference vegetation index was discriminate with higher naturalness. graph theory metrics test EN’s robustness locations restoration scenario. EN, formed separate components, composed 724 arcs 300 nodes average area 27.04 ha. After hypothesis, only one component, 771 328 26.82 It possible analyze evaluate impact intended enhance connectivity. By comparing several metrics, we highlighted potential land interventions as planning tool future conservation.

Язык: Английский

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Protecting and constructing ecological corridors for biodiversity conservation: A framework that integrates landscape similarity assessment

Applied Geography, Год журнала: 2023, Номер 160, С. 103098 - 103098

Опубликована: Сен. 30, 2023

Язык: Английский

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Mechanistic home range capture–recapture models for the estimation of population density and landscape connectivity

Ecology, Год журнала: 2025, Номер 106(2)

Опубликована: Фев. 1, 2025

Spatial capture-recapture models (SCRs) provide an integrative statistical tool for analyzing animal movement and population patterns. Although incorporating home range formation with a theoretical basis of into SCRs can improve the prediction space use in heterogeneous landscape, this approach is challenging owing to sparseness recapture events. In study, we developed advection-diffusion model (ADCR), which extension formalism, providing new framework estimate density landscape permeability. tested unbiasedness estimator using simulated data generated by step selection function. We also compared accuracy estimates shapes those from SCR least-cost path basic SCR. addition, ADCR was applied real dataset Asiatic black bear (Ursus thibetanus) Japan demonstrate capacity detect geographical barriers that constrain movements. Population permeability were substantially unbiased datasets. could environmental signals on connectivity more sensitively density, shapes, size variations better than existing models. For application dataset, effect water bodies as barrier movement, consistent previous studies, whereas difficult interpret. provides unique opportunities elucidate both individual- population-level ecological processes data. By offering formal link functions it suitable simultaneously modeling This study studies interplay between

Язык: Английский

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Identification of urban flight corridors for migratory birds in the coastal regions of Shenzhen city based on three-dimensional landscapes

Landscape Ecology, Год журнала: 2020, Номер 36(7), С. 2043 - 2057

Опубликована: Май 23, 2020

Язык: Английский

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Dispersal movement through fragmented landscapes: the role of stepping stones and perceptual range

Landscape Ecology, Год журнала: 2021, Номер 36(11), С. 3249 - 3267

Опубликована: Авг. 6, 2021

Язык: Английский

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A three-step approach for assessing landscape connectivity via simulated dispersal: African wild dog case study

Landscape Ecology, Год журнала: 2023, Номер 38(4), С. 981 - 998

Опубликована: Фев. 17, 2023

Dispersal of individuals contributes to long-term population persistence, yet requires a sufficient degree landscape connectivity. To date, connectivity has mainly been investigated using least-cost analysis and circuit theory, two methods that make assumptions are hardly applicable dispersal. While these can be relaxed by explicitly simulating dispersal trajectories across the landscape, unified approach for such simulations is lacking.Here, we propose apply simple three-step simulate assess empirical GPS movement data set habitat covariates.In step one proposed approach, use integrated step-selection functions fit mechanistic model describing preferences dispersing individuals. In two, parameterized study area. three, derive three complementary maps; heatmap highlighting frequently traversed areas, betweenness map pinpointing corridors, inter-patch indicating presence intensity functional links between patches. We demonstrate applicability in case which collected on African wild dogs (Lycaon pictus) inhabiting northern Botswana.Using successfully parametrized detailed described individuals' preferences, as well potential interactions among two. The substantially outperformed omitted enabled us 80,000 area.By trajectories, our not only fewer unrealistic about dispersal, but also permits calculation multiple metrics together provide comprehensive view study, derived maps revealed several dog hotspots corridors extent Each highlighted different aspect connectivity, thus emphasizing their nature. Overall, demonstrates simulation-based offers powerful alternative traditional modeling techniques. It therefore useful variety applications ecological, evolutionary, conservation research.The online version contains supplementary material available at 10.1007/s10980-023-01602-4.

Язык: Английский

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Four steps to strengthen connectivity modeling

Ecography, Год журнала: 2023, Номер 2023(11)

Опубликована: Июль 18, 2023

Maintaining and restoring ecological connectivity is considered a global imperative to help reverse the decline of biodiversity. To be successful, practitioners need guided by modeling research that rigorous reliable for task at hand. However, methods workflows within this rapidly growing field are diverse few have been carefully scrutinized. We propose four steps should consistently undertaken in studies order improve rigour utility: 1) describe type being modeled, 2) assess uncertainty sensitivity model parameters, 3) validate outputs, ideally with independent data 4) make non‐sensitive raw code openly available enhance computational reproducibility. reviewed literature determine extent which included these steps. focused on generated novel landscape outputs using circuit theory restricted our assessment concerning terrestrial mammals. Among 181 meeting search criteria, 39% communicated 18% conducted some form or analysis (or both), attempted their only 7% used fully do so. Lastly, 13% made all available, 2% provided required two both. Our findings highlight clear opportunity reliability, reproducibility utility research. provide checklist researchers can consult include outputs. This will more informed decisions ensure limited resources conservation restoration allocated appropriately.

Язык: Английский

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