共查询到20条相似文献，搜索用时 110 毫秒
1.
Uroy Léa Alignier Audrey Mony Cendrine Foltête Jean-Christophe Ernoult Aude 《Landscape Ecology》2021,36(9):2487-2504
Landscape Ecology - Landscape connectivity plays a key role in determining the persistence of species inhabiting fragmented habitat patches. In dynamic landscapes, most studies measure connectivity... 相似文献
2.
Peterman William E. Winiarski Kristopher J. Moore Chloe E. Carvalho Carolina da Silva Gilbert Anthony L. Spear Stephen F. 《Landscape Ecology》2019,34(9):2197-2208
Landscape Ecology - Landscape resistance surfaces are often used to address questions related to movement, dispersal, or population connectivity. However, modeling landscape resistance is... 相似文献
3.
Unnithan Kumar Siddharth Turnbull Jonathon Hartman Davies Oscar Hodgetts Timothy Cushman Samuel Alan 《Landscape Ecology》2022,37(10):2465-2480
Landscape Ecology - Landscape connectivity, the extent to which a landscape facilitates the flow of ecological processes such as organism movement, has emerged as a central focus of landscape... 相似文献
4.
Landscape Ecology - Tree canopy connectivity is important for supporting biodiversity. In urban landscapes, empirical examinations of habitat connectivity often overlook residential land, though... 相似文献
5.
Landscape Ecology - Fragmentation in agricultural landscapes is considered as a major threat to biodiversity. Thus, ecological corridors are deployed at multiple scales to increase connectivity.... 相似文献
6.
Préau Clémentine Dubos Nicolas Lenormand Maxime Denelle Pierre Le Louarn Marine Alleaume Samuel Luque Sandra 《Landscape Ecology》2022,37(3):729-743
Landscape Ecology - Prioritising is likely to differ depending on the species considered for connectivity assessments, leading to a lack of consensual decisions for territorial planning. The... 相似文献
7.
Landscape Ecology - Restoring landscape connectivity can mitigate fragmentation and improve population resilience, but functional equivalence of contrasting elements is poorly understood.... 相似文献
8.
Naaf Tobias Feigs Jannis Till Huang Siyu Brunet Jörg Cousins Sara A. O. Decocq Guillaume De Frenne Pieter Diekmann Martin Govaert Sanne Hedwall Per-Ola Lenoir Jonathan Liira Jaan Meeussen Camille Plue Jan Vangansbeke Pieter Vanneste Thomas Verheyen Kris Holzhauer Stephanie I. J. Kramp Katja 《Landscape Ecology》2022,37(5):1365-1384
Landscape Ecology - Plant populations in agricultural landscapes are mostly fragmented and their functional connectivity often depends on seed and pollen dispersal by animals. However, little is... 相似文献
9.
Canedoli Claudia Ficetola Gentile Francesco Corengia Davide Tognini Paola Ferrario Andrea Padoa-Schioppa Emilio 《Landscape Ecology》2022,37(1):347-365
Landscape Ecology - A landscape is defined as a “system of ecosystems” and this is a model in which karst areas can easily be integrated. In karst areas, much of the connectivity... 相似文献
10.
Landscape Ecology - In March of 2011 a huge tsunami devastated forest habitats along the coast of Sendai Bay in northeastern Japan. Evaluation and monitoring of the changes in habitat connectivity... 相似文献
11.
Temporal variability of connectivity in agricultural landscapes: do farming activities help? 总被引：5，自引：0，他引：5
Baudry Jacques Burel Françoise Aviron Stéphanie Martin Manuel Ouin Annie Pain Guillaume Thenail Claudine 《Landscape Ecology》2003,18(3):303-314
Landscape Ecology - In landscapes where natural habitats have been severely fragmented by intensive farming, survival of many species depends on connectivity among habitat patches. Spatio-temporal... 相似文献
12.
Landscape Ecology - Climate and land-use changes affect species ranges and movements. However, these changes are usually overlooked in connectivity studies, and this could have adverse consequences... 相似文献
13.
Anderson Calum Travis Justin M. J. Palmer Stephen C. F. Crick Humphrey Q. P. Lancaster Lesley T. 《Landscape Ecology》2022,37(10):2503-2517
Landscape Ecology - Linear landscape elements (LLEs) such as ditches and hedgerows can increase the ecological connectivity of habitat embedded within agricultural areas by acting as corridors for... 相似文献
14.
Wright P. G. R. Bellamy C. Hamilton P. B. Schofield H. Finch D. Mathews F. 《Landscape Ecology》2021,36(12):3419-3428
Landscape Ecology - Habitat suitability models (HSM) have been used to understand the impacts of landscape-scale habitat connectivity and gene flow mostly by assuming a regular decrease in the cost... 相似文献
15.
Landscape pattern indices are common tools of landscape ecologists, affording comparisons of different study areas, or the
same study area at different times. Since the advent of popular index-calculating software, more landscapes can be analyzed
in short amounts of time, yet the behaviour of landscape pattern indices can vary for different contexts or data characteristics,
complicating interpretation. I applied a selected set of landscape pattern indices to fine-resolution (3 m) data representing
a highly fragmented landscape – Corn Belt Iowa agriculture – to investigate the performance of landscape pattern indices.
Indices measured pattern attributes that affect the viability of small mammal populations, namely habitat proportion and connectivity
and landscape grain size and heterogeneity. Results showed that the performance of indices for fine-resolution data can be
highly variable, depending upon data and contextual issues like the presence of linear elements and the amount of habitat.
For these Corn Belt landscapes good habitat proportions and patch sizes were small (commonly less than 10% and less than 1 ha,
respectively), and connectivity was variable depending on the measure. Aggregation and mean nearest neighbour indices performed
better than other connectivity indices. Fine-resolution data representing highly fragmented landscapes can raise difficulties
for indices of landscape configuration. Landscape pattern indices require improvement to perform better for increasingly available
fine-resolution data representing common landscape types. 相似文献
16.
Landscape connectivity is critical to species persistence in the face of habitat loss and fragmentation. Graph theory is a
well-defined method for quantifying connectivity that has tremendous potential for ecology, but its application has been limited
to a small number of conservation scenarios, each with a fixed proportion of habitat. Because it is important to distinguish
changes in habitat configuration from changes in habitat area in assessing the potential impacts of fragmentation, we investigated
two metrics that measure these different influences on connectivity. The first metric, graph diameter, has been advocated
as a useful measure of habitat configuration. We propose a second area-based metric that combines information on the amount
of connected habitat and the amount of habitat in the largest patch. We calculated each metric across gradients in habitat
area and configuration using multifractal neutral landscapes. The results identify critical connectivity thresholds as a function
of the level of fragmentation and a parallel is drawn between the behavior of graph theory metrics and those of percolation
theory. The combination of the two metrics provides a means for targeting sites most at risk of suffering low potential connectivity
as a result of habitat fragmentation. 相似文献
17.
Raquel Ribeiro Miguel A. Carretero Neftalí Sillero Gonzalo Alarcos Manuel Ortiz-Santaliestra Miguel Lizana Gustavo A. Llorente 《Landscape Ecology》2011,26(5):673-682
Landscape connectivity is a very recurrent theme in landscape ecology as it is considered pivotal for the long term conservation
of any organism’s populations. Nevertheless, this complex concept is still surrounded by uncertainty and confusion, largely
due to the separation between structural and functional connectivity. Amphibians are the most threatened vertebrates around
the globe, in Europe mostly due to habitat alteration, and to their particular life cycle. Pond breeding amphibians are considered
to be organised in metapopulations, enhancing the importance of landscape connectivity in this group of animals. We sampled
the amphibian species present in two pond groups in Central Western Spain. We applied the graph theory framework to these
two pond networks in order to determine the importance of each pond for the entire network connectivity. We related the pond
importance for connectivity with the species richness present in each pond. We tested if connectivity (partially) determined
the presence of the amphibian species sampled using logistic regression. The results show that the structural connectivity
of the pond network impacts on the amphibian species richness pattern and that the importance of the pond for the connectivity
of the network is an important factor for the presence of some species. Our results, hence, attest the importance of (structural)
landscape connectivity determining the pattern of amphibian (functional) colonization in discrete ponds. 相似文献
18.
Evaluation of landscape connectivity at community level using satellite-derived NDVI 总被引：1，自引：1，他引：0
Audrey Muratet Romain Lorrillière Philippe Clergeau Colin Fontaine 《Landscape Ecology》2013,28(1):95-105
Landscape connectivity, defined as the degree to which the landscape facilitates or impedes movement among resource patches, has been considered to be a key issue for biodiversity conservation. However, the use of landscape connectivity measurements has been strongly criticised due to uncertainties in the methods used and the lack of validation. Moreover, measurements are typically restricted to the population level, whereas management is generally carried out at the community level. Here, we used satellite imagery and network metrics to predict the landscape connectivity at community level for semi-natural herbaceous patches in an urban area near Paris (France). We tested different measurement methods, both taking into account and ignoring the spatial heterogeneity of matrix resistance estimated by the normalised difference vegetation index (NDVI), and quantifying the link strength between patches with the shortest path and flow metrics. We assessed the fit of these connectivity predictions with empirical data on plant communities embedded in an urban matrix. Our results indicate that the best fit with the empirical data is obtained when the connectivity is estimated with the flow metric and takes into account the matrix heterogeneity. Overall, our study helps to estimate the landscape connectivity of urban areas and makes recommendations for ways in which we might optimise landscape planning with respect to conservation of urban biodiversity. 相似文献
19.
Julian Helfenstein Lea Bauer Aline Clalüna Janine Bolliger Felix Kienast 《Landscape Ecology》2014,29(7):1109-1113
Landscape ecology is a broad field in a patchwork of related disciplines. Giving landscape ecology a definition and delimiting it from related research areas is both a challenge and a necessity. Past endeavors have focused on expert opinions, analyses of published papers, and conference proceedings. We used a mix of all three, including a unique keyword analysis in two leading landscape-related journals, to highlight latest developments in landscape ecology between 2010 and 2013. Our analysis confirms the key topics of Wu (Landscape Ecol 28(1):1–11, 2013), and suggests that of those connectivity is dominating in terms of research output. However, we also found evidence that the borders of the journal Landscape Ecology are fuzzier than sketched in recent publications. There is a large overlap with the journal Landscape and Urban Planning, and in general a growing weight of conservation, landscape management, and planning related issues in the landscape ecology community. We conclude by encouraging the continued inclusion and strengthening of socio-ecological hot topics such as urban studies and landscape-human interactions in landscape ecological studies and subsequently in the journal landscape ecology. 相似文献
20.
How should we measure landscape connectivity? 总被引：9，自引：0，他引：9
The methods for measuring landscape connectivity have never been compared or tested for their responses to habitat fragmentation. We simulated movement, mortality and boundary reactions across a wide range of landscape structures to analyze the response of landscape connectivity measures to habitat fragmentation. Landscape connectivity was measured as either dispersal success or search time, based on immigration into all habitat patches in the landscape. Both measures indicated higher connectivity in more fragmented landscapes, a potential for problematic conclusions for conservation plans. We introduce cell immigration as a new measure for landscape connectivity. Cell immigration is the rate of immigration into equal-sized habitat cells in the landscape. It includes both within- and between-patch movement, and shows a negative response to habitat fragmentation. This complies with intuition and existing theoretical work. This method for measuring connectivity is highly robust to reductions in sample size (i.e., number of habitat cells included in the estimate), and we hypothesize that it therefore should be amenable to use in empirical studies. The connectivity measures were weakly correlated to each other and are therefore generally not comparable. We also tested immigration into a single patch as an index of connectivity by comparing it to cell immigration over the landscape. This is essentially a comparison between patch-scale and landscape-scale measurement, and revealed some potential for patch immigration to predict connectivity at the landscape scale. However, this relationship depends on the size of the single patch, the dispersal characteristics of the species, and the amount of habitat in the landscape. We conclude that the response of connectivity measures to habitat fragmentation should be understood before deriving conclusions for conservation management. 相似文献